subject: Coal Injection Pump Technical Conditions - Coal Injection Pumps, Technical Conditions, Norms - Pump [print this page] 3.12 at rated operating conditions, the motor input current value should be less than its rated current value of 95%.
3.13 Product 500h continuous operation at rated operating conditions during the performance should meet the standards 3.6,3.7,3.10,3.11 all the provisions of Article.
Note: The continuous operation tests, to allow replacement of a water seal and a valve spring.
3.14 Product overload test should not be zero, the phenomenon of component damage.
3.15 to comply with water injection pump in the user manual under the conditions, the date of shipment from the factory within 18 months, the product does not work due to poor manufacture or use of parts and components damaged, factory should be free for users product repair or replacement of parts (not including the product description listed in the wearing parts).
4 test methods 4.1 General provisions: 4.1.1 test was used for 0 ~ 500 medium of water.
4.1.2 Schematic experimental device should conform to GB 7784 in Appendix A.
4.1.3 Instrument measured parameter values indicative of the scope of permitted fluctuations, the total error should be consistent with GB7784 Table 2, Table 3, Table 4 requirements.
4.1.4 parameter measurement and measuring instruments
4.1.4.1 flow, pressure, temperature, pump speed, power and other parameters of the precision of measurement and measuring instruments should meet GB7784 of 3.1 to 3.5 of the Ordinance.
4.1.4.2 trial, all instrument readings should also be read or recorded. The number of measured parameters for each measurement shall be not less than 3 times (only for leakage measurement 1), whichever is the arithmetic mean as the measured value.
4.1.5 Data processing should conform to GB 7784 of the provisions of Chapter 4.
4.2 Appearance quality: By visual assessment in accordance with the provisions of Article 3.4 of the standard test.
4.3 test run: Commissioning should be GB 7784 of the provisions of Article 2.3.1.
4.4 Test oil temperature: Test should be GB 7784 of the provisions of Article 3.3.3.
4.5 points with the minimum degree of value not less than 10mL, the rated capacity of not less than 250mL graduated cylinder seal leakage determination of water, measuring time should be less than 10min. Noise shall be measured
4.7 safety valve test: 4.7.1 injection pump valve should be in operation in the conduct of trial.
4.7.2 test, gradually close the discharge pipe valve, increase discharge pressure, check valve, the opening pressure should be rated discharge pressure of 1.0 ~ 1.3 times.
4.8 Rated operating conditions test points:
4.8.1 of 3.1,3.4 according to GB7784 article Determination of flow injection pumps and pumping speed, and calculate the capacity factor.
4.8.2 for the injection pump with a nominal value assigned by the motor rated current value of 1.5 to 2.0 times the minimum division value of not less than 1A, the precision of the current meter of not less than 1.5 measured motor input current value.
4.9 continuous operation test: 4.9.1 commissioning, safety valve testing, rated operating point of injection pump test can pass this test.
4.9.2 test should conform to GB 7784 of the provisions of Article 2.3.2.
4.10 overload test: 4.10.1 commissioning, safety valve testing, rated operating point of injection pump test can pass this test.
4.10.2 overload test of 1.25 times the rated discharge pressure of the pressure, duration of 15min.
4.10.3 3.14 according to the standard provisions of overloading test and inspection products.
5 Inspection Rules 5.1 injection pump should be tested and type of factory inspection.
5.2 Factory Inspection: 5.2.1 Each injection pump shall be subject to factory quality inspection department to issue certificate of passing inspection, and only after the factory.
5.2.2 pumps each Note shall be the standard provisions of Article 3.4,3.9,3.10,3.12 factory inspection.
Note: Each injection pump test by the factory, it should be divisible by oil pump and valve body shell over the water, rust treatment accordingly, seal exposed openings.
5.3 Type tests: 5.3.1 Type inspection should be the standard 3.4 to 3.14 of the regulations.
5.3.2 injection pump should be carried out in the following types of test cases:
A. New products or old products, trial production at another factory pattern evaluation;
B. After normal production, such as structure, materials, technology has major changes that may affect product performance time;
C. The normal production, every 2 years should be a time (not to the provisions of this standard 3.13 trial);
D. Discontinued more than 1 year and then resume production (not to the provisions of the standard 3.13 trial);
E. Factory test results and the last type of test results greater discrepancy;
F. Of Quality Supervision, Inspection bodies to type a request.
5.3.3 Sampling method and determine the rules:
From the factory inspected and the crystal in accordance with the provisions of GB10111 extract 1 to 2 units for type testing (sampling base should be not less than 10 units). In the type test in which a failure when the time (the provisions of this standard except 3.4), should redouble their re-examination; when there is still a failure (for the requirements of this standard except 3.4), is that the product failed.
6 logo, packaging, storage 6.1 logo Each injection pump should be the obvious place to set the pump shell plate. Nameplate shall be fixed firmly, her clear, durable. Nameplate shall include the following elements:
A. Name of manufacturer; B. Product name, model and trademark;
C. Date and factory manufactured batch;
D. The main parameters of the product.
6.2 Packaging 6.2.1 injection pumps can be used in product packaging slip at the bottom of wood on a fixed. Items inside the box should be able to prevent damage, loss, sun and rain.
6.2.2 Each injection pump should be accompanied by the following documents and sealed in waterproof pocket:
A. Product certificate; B. Product manual; C. Packing list. 6.2.3 Random consumable products, disassembly tools and documents to be loaded into a small box bags, and fixed in the box.
6.2.4 box on the text, icons and symbols should be neat, clear, durable, rain resistant.
