MT 197-1989 English PDF

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MT 197-1989: Multistage segmental centrifugal mud pump
Status: Obsolete

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
MT 197-1989	199	Add to Cart	2 days	Multistage segmental centrifugal mud pump	Obsolete

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Basic data

Standard ID: MT 197-1989 (MT197-1989)
Description (Translated English): Multistage segmental centrifugal mud pump
Sector / Industry: Coal Industry Standard
Classification of Chinese Standard: J71
Word Count Estimation: 5,581
Date of Issue: 3/31/1989
Date of Implementation: 4/1/1989
Summary: This standard specifies the types, basic parameters and technical conditions multistage centrifugal slurry pumps segment. This standard applies to transport liquid containing solid particles of diameter less than 6mm (00 coal, ash, ore, tailings, cement, clay sand, etc.) multistage centrifugal slurry pumps segment. Volume concentration of the solid-liquid mixture is conveyed not more than 30%; the temperature does not exceed 80 ��.

MT19:

---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.
Multistage segmental centrifugal mud pump MT/T 197-89

Contents

1 Topic content and scope of application 1 2 Normative references 1 3 Types and basic parameters 1 4 Technical requirements 2 5 Test methods and acceptance rules 4 6 Marking, packaging, transportation and storage 4 Ministry of Energy Standards Multistage segment centrifugal mud pump 1989-03-31 approved by the Ministry of Energy of the People's Republic of China

1 Topic content and scope

This standard specifies the type, basic parameters and technical conditions of multi-stage centrifugal mud pumps. This standard applies to solid particles (e.g., slime, ash, concentrate, tailings, cement, soil, Sand, etc.) multi-stage centrifugal slurry pump. The volume concentration of the solid-liquid mixture being transported is not more than 30%; the temperature is not more than 80 ° C.

2 Reference standards

Matching of GB 275 rolling bearings with shafts and housings GB 699 steel grade and general technical requirements of high-quality carbon structural steel Technical requirements for GB 700 ordinary carbon structure GB 976 Classification and technical requirements of gray cast iron GB 977 Test method for mechanical properties of gray cast iron GB 979 carbon steel casting classification and technical conditions Classification and technical conditions of GB 1299 alloy tool steel GB 3214 water pump flow measurement method GB 3216 Test methods for centrifugal pumps, mixed flow pumps, axial flow pumps and vortex pumps GB 7021 centrifugal pump terminology YB13 Steel for wear-resistant parts of agricultural tools JB/T Q380 pump vibration measurement and evaluation method JB2121 Copper alloy casting technical requirements JB2759 General technical requirements for packaging of mechanical and electrical products

3 types and basic parameters

3.1 Type Multistage radial split segment centrifugal mud pump. 3.2 Model meaning example. 3.3 Basic parameters The basic performance parameters of the pump when pumping clean water are specified in Table 1.

4 Technical requirements

4.1 Basic requirements. 4.1.1 Multi-stage centrifugal mud pumps shall comply with the requirements of this standard and be manufactured in accordance with drawings and technical documents approved by prescribed procedures. 4.1.2 Any general technical requirements not specified in this standard shall meet the requirements of relevant standards of the machinery industry in national standards. 4.2 When determining the power of the prime mover, the rated shaft power should be calculated according to the gravity of the solid-liquid mixture input.The power of the optional prime mover should be greater than the calculation. 110% of rated shaft power. 4.3 Reference operating conditions and service life. 4.3.1 Under the conditions that the coal slurry volume concentration is less than 10%, the coal hardness hardness Platts coefficient f is not greater than 1, and the radon content in the coal does not exceed 10%, Line 2500h without overhaul. 4.3.2 In the condition that the coal slurry volume concentration is 10% ~ 20%; the coal hardness hardness Platts coefficient is 1 ~ 1.5; the radon content in coal does not exceed 10% In the next 1800 hours, no overhaul. 4.3.3 When the coal slurry volume concentration is greater than 20% ~ 30%; the coal hardness hardness Platts coefficient f is greater than 1.5 ~ 2; the radon content in coal does not exceed 10% Under the conditions, 1200h operation without overhaul. 4.4 The operating temperature rise of the bearing shall not exceed 35 ° C, and the limit temperature shall not exceed 75 ° C. 4.5 Material selection for important parts. a. The material of the suction section (front section), middle section, discharge section (rear section), and balance chamber cover (tail cover) is ZG35 or high-quality carbon steel superior to ZG35. b. The material of impeller, housing sealing ring (sealing ring), intermediate bushing (guide vane sleeve) and baffle is high chromium series alloy white iron, such as Cr15Mo3 or other wear-resistant materials. c. The material of the guide vanes and partitions is 65SiMnCu or other abrasion-resistant materials. d. The material of balance drum (balance piston), balance bush (balance sleeve) and balance disc body is high-quality medium carbon steel or medium carbon alloy steel. e. The friction end face of the wear ring (balance piston) of the balance plate is spray-welded with a nickel-based wear-resistant coating. f. The material of the balance plate is aluminum iron bronze or the substrate is high-quality medium carbon steel, and the friction end surface is spray-welded with an iron-based wear-resistant coating. g. The material of shaft and penetrating bar is 45 high quality carbon steel, and it is quenched and tempered. 4.6 Material composition, quality, technical requirements and test methods shall meet the following standards GB 979, GB 976, GB 977, GB 1299, GB 699, GB 700, YB13, JB2121. 4.7 The parts that cooperate with rolling bearings shall meet the requirements of GB 275. 4.8 The surface roughness of the main mating parts of the part is not greater than the following requirements. 4.8.1 Match with impeller, baffle, balance disc, balance drum (balance piston), stuffing shaft sleeve (front shaft sleeve, rear shaft sleeve), bearing inner sleeve and coupling Combined pump shaft surface. Ra1.6μm. 4.8.2 Impellers, baffles, balance disks, balance drums (balance pistons), stuffing shaft sleeves (front shaft sleeve, rear shaft sleeve), bearing inner sleeves, couplings and pump shaft Combined inner hole surface. Ra3.2μm. 4.8.3 Part transition mating surface. Ra3.2μm. 4.8.4 Sealing surface of suction section (front section), middle section, and discharge section (rear section). Ra3.2μm. 4.9 Center holes shall be retained at both ends of the shaft. 4.10 The impeller should be subjected to static balance test, and its unbalanced weight should meet the requirements of G6.3 level balance accuracy in Appendix B of JB/T Q380. When removing the unbalanced weight, the cover between the blades can be cut smoothly from the outer circle; or the outer surface of the rear cover can be smoothly cut to produce partial weight Metal, but the thickness of the cut must not exceed one quarter of the nominal thickness of the rear cover. 4.11 Parts subjected to hydraulic pressure shall be tested for tightness and hydraulic strength in accordance with the following provisions.The duration of the hydraulic pressure test shall not be less than 5min, there must be no leakage of parts. a. Water pressure test at room temperature; b. The test pressure of the suction section (front section) is 0.98MPa; c. The test pressure of the middle section and the discharge section (rear section) is 1.5 times the maximum working pressure. 4.12 Before the pump is assembled, the parts where the parts flow should be coated with anti-rust paint. 4.13 All parts of the pump must be inspected and qualified before assembly. 4.14 The rotor components shall be pre-assembled. Based on the outer surface of the bearing, the impeller seal ring, the outer circle of the shaft sleeve and the retaining sleeve and the balance disk, flat The allowable run-out of the balance drum (balance piston) end face shall not exceed the requirements in Table 2. 4.15 When the pump is assembled, with the balance disc or balance drum (balance piston) and the balance plate close, the width of the impeller outlet should be the width of the inlet Degrees. 4.16 After the pump is assembled, when the packing is not installed, the rotor rotation should be flexible and uniform. 4.17 The matching parts of parts and components shall ensure that the parts and components are interchangeable. The installation dimensions of the pump should be consistent with the drawings. 4.18 After the pump has passed the performance test, the accumulated water in the pump shall be removed, the rust prevention treatment shall be performed again and the new packing shall be replaced. The external surface should be smooth and polished, Carefully remove rust and oil, and apply primer and topcoat. Putty when needed. The paint should be uniform and free of cracks, peeling, bubbles and silting And other defects. Exposed processed surfaces should be coated with hardened rust preventive oil. 4.19 The scope of supply of the complete set of pumps includes. a. Completely assembled pump; b. motor; c. pump seat; d. coupling; e. Gate valve, check valve, limiter clearer; f. Vulnerable spare parts; g. Special tools necessary for assembling and disassembling the pump. Users can order all or part of the complete supply range according to their needs, and indicate in the order form. 4.20 Under the condition that the product selected by the user is appropriate and the transportation, storage, installation, and usage rules of the pump are complied with, the product is shipped for 12 months from the date of shipment from the manufacturer In the event that the product is damaged due to poor manufacturing quality or does not work properly, the manufacturer shall be responsible for replacing, repairing the product or Pieces. But does not include all vulnerable parts, normal damage to components.

5 Test methods and acceptance rules

5.1 Each pump must pass the inspection of the manufacturer's technical inspection department and be accompanied by a product quality certificate before shipment. 5.2 Test according to the following regulations. a. Type testing of all new product trials. b. When some characteristics change due to design or process changes, all type tests are performed. c. Type-tested products shall be type-tested in accordance with the quantity specified in Table 3. Factory test, but products with stable quality can be tested at the rate specified in Table 3. If the test fails, it is determined according to the nature of the problem. Be sure to double the test or all tests. 5.3 The test method shall meet the requirements of GB 3216 and GB 3214. Performance test accuracy and acceptance are generally in accordance with Class C of GB 3216. 5.4 During the performance test, the bearing temperature, seal leakage, vibration and noise should be checked at the same time. 5.5 When the manufacturer cannot perform the test due to the limitation of equipment conditions, the user may test it. Specific test methods are jointly made by the manufacturer and the user Agreed. 6 Marking, packaging, transportation and storage 6.1 Signs 6.1.1 Each pump shall be securely nailed with the product label in an appropriate and prominent position. The sign should include the following. a. the name of the manufacturer; b. the name and model of the pump; c. Technical specifications of the pump. flow rate (m3/h), head (m), maximum allowable particle size (mm), efficiency (%), speed (r/min), belt Power (kW), necessary cavitation allowance (m) and pump weight (kg); d. Pump manufacturing number and date of manufacture. 6.1.2 The direction of rotation of the pump shall be indicated by a red arrow sign at a suitably prominent position. 6.2 Packaging and shipping 6.2.1 Product packaging shall comply with the provisions of JB2759. It shall be able to prevent corrosion, damage or loss of accessories, spare parts and documents during transportation. Case, etc. 6.2.2 After anti-rust treatment and surface painting. The inlet and outlet of the pump should be covered by covers, and other holes communicating with the pump should also be blocked. 6.2.3 When each pump leaves the factory, it shall be accompanied by a certificate of delivery, packing list, random technical documents and drawings (including. instructions for installation and use) Book, installation dimension drawing, general assembly drawing, wearing parts drawing), and sealed in waterproof and moisture-proof document bag. 6.2.4 The outside of the packing box shall be marked with the following. a. pump model name; b. pump factory number and packing date; c. Pump net weight, package weight and overall dimensions (length × width × height); d. Arrival and receiving units; e. Station and shipping unit. 6.3 The pump should be protected from rust and damage during storage. Additional information. This standard is proposed by the Technology Development Department of China Unified Coal Mine Corporation. This standard was drafted by the Tangshan Branch of the Coal Science Research Institute and the Machinery and Power Plant of the Beijing Mining Bureau. This standard is entrusted to the Tangshan Branch of the Coal Science Research Institute and the Machine and Power Plant of the Beijing Mining Bureau for interpretation. The main drafters of this standard are Li Zhongzheng, Gu Tianyuan, Huang Jiaqian, and Zhao Jiajun. ......

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