GB 7958-2014 English PDFUS$329.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 7958-2014: Capacitor discharge type exploders for coal mines Status: Valid GB 7958: Historical versions
Basic dataStandard ID: GB 7958-2014 (GB7958-2014)Description (Translated English): Capacitor discharge type exploders for coal mines Sector / Industry: National Standard Classification of Chinese Standard: K35 Classification of International Standard: 29.260.20 Word Count Estimation: 14,154 Date of Issue: 12/12/2014 Date of Implementation: 11/1/2015 Older Standard (superseded by this standard): GB 7958-2000 Quoted Standard: GB/T 191; GB/T 2423.1-2008; GB/T 2423.2-2008; GB/T 2423.4-2008; GB/T 2423.8-1995; GB/T 2423.10-2008; GB 3836.1-2010; GB 3836.2-2010; GB 3836.4-2010; GB 4208; GB/T 6388; GB/T 10111; AQ 1043 Regulation (derived from): National Standards Bulletin 2014 No. 30 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This Standard specifies mine detonator hair capacitive terms and definitions, model name and preparation methods, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage and so on. Mine capacitive Exploder appli GB 7958-2014: Capacitor discharge type exploders for coal mines---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.Capacitor discharge type exploders for coal mines ICS 29.260.20 K35 National Standards of People's Republic of China Replacing GB 7958-2000 Mine capacitive Exploder Issued on. 2014-12-22 2015-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released Table of ContentsIntroduction Ⅲ Introduction Ⅳ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 model name and Preparation Method 2 5 2 Technical Requirements 6 Test Method 4 7 7 inspection rules 8 signs, packaging, transportation and storage 8ForewordAll the technical contents of this standard is mandatory. This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB 7958-2000 "coal mine capacitive Exploder." This standard compared with GB 7958-2000, the main technical content differences are as follows. --- Detonated action "such as the use of electronic switches should be connected to the output instruction detonation impulse reliably detonate energy output, non-occurrence Unexpected power phenomenon. "To" such as the use of electronic switches shall ensure continuous and reliable charging process, unexpected power failure now prohibited Like; it should be connected to the output instruction detonation impulse reliably detonate energy output, power accident occurred phenomenon is strictly prohibited. "(See 5.5, 2000 edition 5.5); Number of trials --- life test made changes and increases in Table 3 (see 516, 2000 edition 6.12.); --- Increasing the minimum ignition impulse and specifies the maximum ignition impulse test methods (see 65, 2000 version 6.5.); --- Ignited impulse, the minimum allowed resistance by GB 8031-2005 have been revised, and synchronizes revised Table 1 (see 5.9 and Table 1, 2000 In version 5.10 and Table 1); --- Remove the "FCC-3" Exploder parameter tester model (see Table 3 of the 2000 edition); --- Load resistance "rated load" to "maximum permissible load" (see 58, 59, 2000 edition of 5.9,5.10.); --- To increase and refine the proof requirements (see 5.7). Please note that some of the content of this document may involve patents. Release mechanism of the present document does not assume responsibility for the identification of these patents. This standard is proposed and managed by the China Coal Industry Association. This standard by the Institute of Shenyang Coal Group Co., Ltd., Heilongjiang coal Vocational and Technical College, Beijing Science and Technology Development Co., Lung Tak Division Dashiqiao explosion Factory, Shandong Longtai Mining Equipment Co., Shuangyashan Kinder Industry Co., Ltd., Weinan coal mine equipment Plant responsible for drafting. The main drafters of this standard. Fu Shuling, Zhang Xu, Li's, Li Xiaojie, Wang Tao, Wu Peking, Maoyun De, Kang Liying, Liying Yun, Li Zhen West, Zhang Yan, too LEE, Pan Yanan, Li Warburg like. This standard replaces the standards previously issued as follows. --- GB 7958-1987.IntroductionMine capacitive Exploder is one of the mining, tunneling and other engineering electric detonators detonated work necessary tools. Since 2000 Revised Order GB 7958 coal mine capacitive Exploder standard has been implemented ten years, to ensure the quality and safety of the product blasting It played an important role. GB main technical requirements in 7958-2000 and about the explosion safety requirements are fully justified and necessary Of this revision work in 7958-2000 on the basis of GB , increase the safety provisions of the content explosion, and explosion-proof security provisions were revised Order, classification and refinement. High-voltage terminals capacitive Exploder exposed, clearances and creepage distances are impossible to comply with GB 3836.1-2010 and GB 3836.3-2010, and it should belong to the "special type", taking into account the many years followed the habit of this amendment remains in GB 7958-2000 About capacitive Exploder made of flameproof requirements formulation. Mine capacitive Exploder1 ScopeThis standard specifies the terms and definitions for use in mines capacitive Exploder, model name and preparation methods, technical requirements, test methods, inspection Rules, marking, packaging, transportation, storage and so on. Mine capacitive Exploder applicable to the coal mine methane and coal dust explosive gas mixtures. This standard applies to coal with capacitive Exploder (hereinafter referred to as the detonator).2 Normative referencesThe following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 191 Packaging - Pictorial signs GB/T 2423.1-2008 Environmental testing for electric and electronic products Part 2. Test methods Test A. Cold GB/T 2423.2-2008 Environmental testing for electric and electronic products Part 2. Test methods Test B. Dry heat GB/T 2423.4-2008 Environmental testing for electric and electronic products Part 2. Test methods - Test Db alternating hot and humid (12h 12h cycle) GB/T 2423.8-1995 Environmental testing for electric and electronic products Part 2. Test methods Test Ed. Free fall GB/T 2423.10-2008 Environmental testing for electric and electronic products Part 2. Test methods Test Fc. Vibration (sinusoidal) GB 3836.1-2010 explosive atmospheres - Part 1. General requirements for equipment GB 3836.2-2010 explosive atmospheres - Part 2. the flameproof enclosure "d" protection equipment GB 3836.4-2010 Explosive atmospheres - Part 4. the intrinsically safe "i" protection equipment GB 4208 housing protection (IP Code) GB/T 6388 standard transport package shipping GB/T 10111 random number generation and its application in product quality sampling in AQ1043 mining product safety signs logo3 Terms and DefinitionsThe following terms and definitions apply to this document. 3.1 Safe power supply time safelysupplyelectricitytime To prevent the electric detonators, electric blasting network pulled off or re-lap spark caused the explosion of methane and air mixture allowed Exploder maximum operating time and minimum power supply time. 3.2 Ignition impulse expenditureenergyofelectricdetonatorignite When energized electric detonators detonated, nickel-chromium wire bridge resistance unit of energy obtained. Multiply its value is equal to the square and passing a current through the power-on time Product, units of A2 · ms.4 Type designation and preparation method4.1 Type designation and preparation method as follows. Product Type. detonator First feature. Capacitive Main parameters. Rated detonated retransmission number Supplementary features code. indicates additional functions Design Number. A, B, C Rated 4.2 retransmission number parameter to detonate the main nickel-chromium wire bridge industrial electric detonator, is preferably 10,25,50,100,150 and 200 series. 4.3 Supplementary features of the code used to indicate additional features.5 Technical requirements5.1 detonator shall comply with the provisions of this standard, in accordance with prescribed procedures approved manufacturing drawings and technical documents. Normal working conditions 5.2 detonator is. a) Temperature. 0 ℃ ~ 40 ℃; b) the ambient air relative humidity less than 95% (at 25 ℃); c) Atmospheric pressure. 80kPa ~ 106kPa. 5.3 Storage ambient temperature. -40 ℃ ~ 60 ℃. Load resistor and the charge time to comply with Table 1 rated 5.4 detonator detonated when the number of hair. Table 1 Typical retransmission number detonator allows the load resistance and charging time Performance model FD10 FD25 FD50 FD100 FD150 FD200 Rated detonated retransmission number 102,550,100,150,200 Allowable load resistance 13≤R≤70 70 \u003cR≤160 160\u003cR≤320 320\u003cR≤620 620\u003cR≤920 920\u003cR≤1220 Charging time ≤10 ≤20 Note. When the number of hair is not rated preferred series, decided to calculate the maximum allowable load resistance should be inserted into the law. 5.5 When should detonator to detonate electrical explosion network output impulse operated by dedicated tools. Such as the use of mechanical switches shall be constructed to protect Card switch handle can not be removed in the "charge" position, and should be flexible rotation; reliable contact on and off, non-accidental power phenomenon occurs; the operation Shall be available for hand jack dust cap. Such as the use of electronic switches shall ensure continuous and reliable charging process is prohibited unexpected power phenomenon; Should be connected to the output instruction detonation impulse reliably detonate energy output, power accident occurred phenomenon is strictly prohibited. 5.6 detonator should have the charging voltage to achieve the required voltage lights or other indication means having the same effect, the display should be clear. 5.7 detonator shall meet the following properties intrinsically safe and explosion-proof performance requirements. a) The safety performance meet the following requirements. 1) Explosion-proof structure intrinsically safe circuits should comply with GB 3836.1-2010, the provisions of GB 3836.4-2010; 2) clearances intrinsically safe and non-intrinsically safe bare conductors shall comply with the provisions of GB 3836.4-2010 in Table 5; 3) between terminals for intrinsically safe and non-high-voltage terminal distance of not less than 50mm, next to the terminals for setting "ib" tag; 4) intrinsically safe circuit shell to withstand 500V, intrinsically safe against non-intrinsically safe voltage terminal should be able to withstand 2000V power frequency withstand voltage, which lasted 1min, may not appear breakdown and flashover, leakage current should not exceed 5mA; 5) detonator during normal operation and fault conditions, the maximum surface temperature of its intrinsically safe circuits, components and housing does not exceed 150 ℃; 6) intrinsically safe circuit shall be capable of 10.1 GB 3836.4-2010 prescribed spark ignition test; 7) the strength of the housing should be able to free fall from a height of 1m drop test explosion on the horizontal flat concrete surface, Test 4 times, should not affect the deformation and damage of the explosion-proof performance; 8) when the housing is made of non-metallic materials, the surface insulation resistance should be less than 1GΩ; 9) The battery pack should meet the requirements in GB 3836.4-2010 7.4. b) proof performance should meet the following requirements. 1) surface explosion parameters. surface explosion parameters should be consistent with the provisions of GB 3836.2-2010 in Table 1. Flameproof joint roughness It should be less than 6.3μm; Distance 2) clearances and creepage. detonator exposed between the output terminal and the output terminal of the housing and between the exposed conductive parts Clearances, creepage distances shall not be less than specified in Table 2; Table 2 clearances and creepage distances Operating voltage U CLEARANCE mm Creepage distance mm U≤1000 10 20 1000 \u003cU≤2000 16 26 2000 \u003cU≤3000 22 32 3) In addition to the high voltage terminal detonator exposed and clearances, creepage distances shall comply with this standard, the explosion-proof performance and structural parameters Shall comply with GB 3836.1-2010, GB 3836.2-2010 and GB 3836.4-2010 the relevant requirements; 4) Exploder protection class test according to the requirements of GB 4208; 5) Transparency should comply with 26.4.2 in GB 3836.1-2010 and impact test requirements of GB 3836.1-2010 26.5.2 Thermal upheaval requirements; 6) detonator housing should be adopted in GB 3836.2-2010 15.1.3.1 hydrostatic tests (pressure test), by 1MPa, which lasted 1min after the hydrostatic test, it should be no leak proof performance and impact of any deformation and damage; 7) the housing shall GB 3836.1-2010 requirements in 26.4.2 Impact test, after the test shall not affect the explosion-proof Can be deformed or damaged; 8) housing should by GB 3836.2-2010 casing pressure test in 15.1 and 15.2 for non-transmission of an internal ignition detonation test. 5.8 To the maximum permissible load range, detonators secure power supply time should be less than 4ms; or reaches 4ms, the output voltage across the terminals Pressure should be reduced to a predetermined value or less intrinsically safe circuit. 5.9 rated detonated detonator made the maximum allowable number of load resistance case, when the voltage indicating device is working properly, detonator ignited punch The amount should not be less than 7.9A2 · ms and not more than 12.0A2 · ms. 5.10 detonator may be provided with an additional circuit measures the electrical explosion of network status. When the measurement should be showing, and the measurement loop current should not Greater than 30mA. 5.11 When disconnecting the cable output terminal and internal circuit between the detonator output terminal, an output terminal and the housing between the bare conductors Insulation resistance at room temperature should be greater than 50MΩ, the calculated value after heat test shall not be less than the formula (1). R ≥ Up (1) Where. R --- insulation resistance, unit megohms (MΩ); Up --- detonator peak output voltage in volts (V). 5.12 detonator after damp heat test, the internal parts should be no significant corrosion, its performance should meet the requirements 5.6,5.8,5.9 and 5.10. 5.13 detonator after temperature storage test, performance should meet the requirements 5.6,5.8,5.9 and 5.10. 5.14 detonator After the vibration test, not loose fasteners, explosion-proof structure should meet the requirements of 5.7, the performance should be consistent with 5.6,5.8, Requirements 5.9 and 5.10. 5.15 detonator after the free drop test, the fastener should not loose and does not affect the deformation and damage of the explosion-proof performance, performance should meet Meets the requirement 5.6,5.8,5.9 and 5.10. Number and frequency of 5.16 detonator life test are shown in Table 3. Detonator after life test, explosion-proof structure should meet the requirements of 5.7, workers It should meet the requirements for performance and 5.6,5.8,5.9 5.10. Table 3 Life Test Performance project The maximum permissible load and a half load OPEN SHORT Number 100010005050 Frequency 1/min 1/min 2 times/min 2 times/min6 Test methods6.1 Test Instruments The main instruments used in the test shown in Table 4. Table 4 Test instruments No. Name instrument measurement range and accuracy requirements 1 time measuring instrument displays the value of not less than 1% ± 0.1ms 2 ignition impulse output meter displays the value of not less than 5% ± 0.1A2 · ms 3 meter 50mA, 2.5 Ji 4 Megohmmeter 1000V or 2500V 5 stopwatch division value of not more than 0.2s 6 precision resistance box 0 ~ 1.5kΩ, 0.1 Ji 7 pressure tester 5000V Note 1. The safe power supply time, igniting impulse and peak output voltage can also be used Exploder parameter tester measurement; Note 2. As with the power supply instead of the battery, the battery should be connected to the equivalent resistance; power short-circuit current of 3A. 6.2 Performance and operating voltage indication means inspection 5.5 and 5.6 according to the requirements of the inspection and the actual operation of the senses. 6.3 Explosion-proof performance 6.3.1 proof structure parameters (including flameproof joint parameters, clearances and creepage distance by measuring inspection). Proof performance Press GB 3836.1-2010, GB 3836.2-2010 GB 3836.4-2010 and related methods. 6.3.2 Spark ignition test method according to GB 3836.4-2010 be specified in 10.1. 6.3.3 The maximum surface temperature of 10.2 according to the method specified in GB 3836.4-2010 performed. 6.3.4 Dielectric strength test according to the method specified in GB 3836.4-2010 10.3 carried. 6.3.5 Explosion drop test method according to GB 3836.1-2010 be specified in 26.4.3. 6.3.6 battery pack according to the method specified in 10.5 of GB 3836.4-2010. 6.3.7 surface insulation resistance test method according to GB 3836.1-2010 be specified in 26.13. 6.3.8 Test enclosure protection class IP54 according to the method specified in GB 4208 carried out. 6.3.9 Transparency and thermal shock test according to GB drastic changes in the impact test requirements 26.4.2 3836.1-2010 and GB 3836.1-2010 The method will be specified 26.5.2. 6.3.10 static pressure test (pressure test) according to the method specified in GB 3836.2-2010 carried out in 15.1.3.1. 6.3.11 shell impact test according to GB 3836.1-2010 be specified in 26.4.2. 6.3.12 flameproof enclosure internal pressure and ignited respectively 15.1 and 15.2 GB 3836.2-2010 prescribed method of non-transmission test get on. 6.4 Determination of charging time From the detonator charge command is issued (which uses mechanical switch detonator handle dedicated to "charge" position, or the use of electronic Start with a stopwatch, stop it when the voltage indication device display switches detonator charge issued instructions). Determination of total 7 times and the average Max. As a result cause the battery charging time exceeds requirements, allows the replacement of the battery re-determination. 6.5 security of electricity supply and ignition impulse measurement time The resistor Exploder parameter tester is set to the maximum allowable load resistance defined by product specifications (including blasting bus resistance) after Connected with the output terminals detonator, detonators issue ignited impulse output instruction (ie, using the first rotating mechanical switch detonator private hands To the "charge" position until the voltage indicating device displaying the rotatable handle to "discharge" position; the first issue of charging instructions using electronic switches, And then send the voltage indicator means to be displayed when the discharge command), read on the Exploder parameter tester secure supply schedules and Chong ignited Scale The security of electricity supply and the ignition time rushing rated values detonated when the number issued. A total of 7 times. When the dispute for arbitration test, with the maximum permissible load resistance arranged according to predetermined specifications (including blasting bus resistance) Precision resistance box and detonator output terminals connected, issue an export detonators ignited impulse command (which uses the rotation when the first mechanical switch detonator Dedicated to handle the "charge" position until the voltage indicating device displaying the rotatable handle to "discharge" position; when the issue first electronic switch Charge command, and then issue a command discharge voltage indication means to be displayed), the curve obtained from the read light oscilloscope rated detonated hair count Security of electricity supply and ignition time when the magnitude of the impulse. A total of 7 times. To take the maximum safe power supply time for the ignition impulse taking the maximum and minimum values. 6.6 Additional circuit current measurement work and working conditions Check electrical explosion network conditions and other additional circuitry working conditions. Ammeter measuremen......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 7958-2014_English be delivered?Answer: Upon your order, we will start to translate GB 7958-2014_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB 7958-2014_English with my colleagues?Answer: Yes. The purchased PDF of GB 7958-2014_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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