Some standard content:
TCS23.160
Machinery Industry Standard of the People's Republic of China
JB/T8944-1999
Single-stagerotaryvaneYacuumpump1999-07-12Published
State Machinery Industry Bureau
2000-01-01Implementation
JB/T89441999
This standard is adopted and approved by the National Vacuum Standardization Technical Committee. The drafting units of this standard are: Shenyang Yihuan Vacuum Technology Research Institute, Zibo Vacuum Equipment Factory, Yangyang Vacuum Technology Research Institute. The main promoters of this standard are: Bian Changzai, Xuan Hongshun, Lan Guiping, Li Chunying. ■Scope
Machinery Industry Standard of the People's Republic of China
Single-stage rotary vane vacuum pump
Single-stage rotary vane vacuum pump JB/T 8944-1999
This standard defines the basic parameters, technical requirements, sampling and judgment methods, test methods, inspection rules, marking, packaging, transportation and other requirements of single-stage rotary vane vacuum pumps (hereinafter referred to as the standard) 2 Cited standards
The following standards contain texts which become non-standard clauses through citation in this standard. When the standard is published, the versions shown are valid. All standards are revised from time to time. Parties using this standard should consider the possibility of using the latest versions of the following standards: G1990
31631993
GB:T13306—1991
GBT 13384:1992
JB/T 65331997
JR:T7266—1994
JD/T:7673—1995
JB.T BI061999
SH0528—1992
3 Standards
Packaging transportation resistance mark
Electrical technical terms
General technical requirements for packaging of electromechanical products
Vacuum image
Volume product performance measurement method
Model preparation method of vacuum equipment
Volume point vacuum throat sound measurement method
Mineral oil vacuum pump oil||tt ||The following definitions are adopted in the standard:
3. Gas flow rate
When the meter is equipped with standard test equipment and operated under specified conditions, the gas flow through the test unit and the average pressure measured at the specified position in this test are called pumping speed, the unit is liter-second [7s, (BT3163--1994.5.1) 3.2 Geometric pumping speed S%
The product of the suction volume of the impeller per revolution and the rated speed, expressed in L, the time between revolutions is s) 3.3 Limiting speed!
The pump is equipped with a standard test hood. It works according to the specification. Under normal working conditions without introducing gas, it pursues the maximum allowable pressure of the structure. The unit is Pa. GR/T316199 4 583.4 Water vapor allowable pressure
Under standard environmental conditions, when the gas ballast pump is reversed for T years: the highest water vapor pressure in the pumped gas. The unit is Pa. GB3[63--1993 H 4.5.18?
Approved by the National Machinery Industry Week on July 12, 1999
Implementation on January 1, 2000
3.5 Small gas filling allowable plate C.
JB/T 8944—1999bzxz.net
When the air pump is continuously operated under standard environmental conditions (20°C and 101325Pa) and the gas ballast valve is opened, the maximum water vapor mass per unit hour is gram per hour (/h [4.5.17 in GB/T316J—1993] 3.6 Low starting temperature
After stopping the pump for at least ", the lowest ambient temperature change for starting in the atmosphere () 4 Models and reference parameters
4. Type
The structural type of the system is that the rotor is eccentrically located in the system and is tangent to (or parallel to) the fixed surface of the pump. There are two or two (even) blades in the rotor. When the rotor rotates, the blades slide back and forth along its diameter (or time) and connect with the pump to divide the pump cavity into several variable spaces.
4.2 Basic parameters
The basic parameters of the pump are determined in accordance with Table 1.
The basic instability parameters of the pump are determined in accordance with Table 1. Once the
1 version of the limited pressure system is used, the sound type air flow test rate is 1. The measured suction limit pressure is now located. The micro-rate is %1.5kPa for this rate: Hydrogen gas is allowed to be used in large-scale steam reforming. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. The maximum allowable residual pressure is 2. 5. The gas velocity index is opposite to:
6. The maximum amount of water vapor in the factory is allowed to be forced to move the water vapor to avoid fraud. The index is temporarily adjusted, and no slowness is considered. Standard: 4. Manufacturing number
4.3.1 The indication party
shall comply with the provisions of JBT76,
4.3.2 Example
JB/T #944—1999
The protection rate is 301.s with a belt-driven single-stage oil-sealed integral vacuum pump, model: X30. The air is 4［.s. The single-stage direct-sensing machine is good at communicating with the model: x745. Technical requirements
5. The items of the inspection shall comply with the requirements of the table "and be manufactured by the approved group after the current order: 5.2 There should be no leakage phenomenon, and the water grid pump should be small. 5.3 The paint on the outer surface of the pump should be smooth.
5.4 The specification book should give the pumping speed of several times, the pumping speed should be 1-1.2 times of the customer's pumping speed: or the product point in the specification book to give detailed provisions for auxiliary equipment, accessories and spare parts 5.5 The humidity of the frying environment is 5~40℃
3.6 After the pump is stopped, it shall not be restarted due to oil return 5. The continuous operation time under the inlet pressure of 100kPa (normal atmosphere) to 6kPa shall not exceed min. When the atmosphere is open, there is no wide impact in the pump. 5.8 When the pump is running under the limit pressure, its noise value shall not exceed the standard in Table 1. 5.9 The mean time between failures (MTBF) of the system shall be given in the manual. 5.10 The maximum operating temperature of the system shall be stated in the manual. 5.11 It is recommended to use SH052B, a high-quality oil with a viscosity grade of 46, 68, and [00 in 1992. 5.12 The minimum starting temperature of the system shall not be higher than 126 °C. 1.1 Composition of inspection batches
Single units are simply inspected. Inspection batches may be the same as production batches, sales batches, and transport batches or different batches. They are basically composed of single units with the same specification number or different specifications, the same grade, production conditions, and production time. The batch size of each inspection batch shall not exceed 250 units. The composition or size of each inspection batch and the method of identifying the batch shall be determined through negotiation. 6. 1. 2 Sample dismantling plan
Use a single sampling plan, the number of samples in each batch is 2, and the qualified number is 6.1.3 Sample selection
The sample should be randomly selected from the control batch, which can be carried out after the batch is formed or during the batch formation process. 6.1.4 Sample inspection
The sample taken shall be inspected according to the method specified in Chapter 7. 6.2 Determination method
The mother pump must meet the technical requirements of the test items of this standard. If it fails to meet any of the test indicators specified in this standard, it shall be judged as a non-conforming product. If both samples are qualified, the batch is judged to be a qualified batch. Otherwise, the batch is judged to be unqualified. 3
7. Test method
JB/T 8944-1999
7.1 The determination of the pumping rate, the ultimate pressure, the maximum power consumption and the lower operating temperature shall be in accordance with JB/T 7266. 7.1 Operation and determination according to JB/T 8106 7.3 Determination of oil non-spraying Add oil according to the instruction manual and the oil level added for the determination of the limit force. Turn the pump to a stable position under extreme pressure. Place a clean white paper at the position of the scavenging port 200 degrees perpendicular to the exhaust air flow. Then, record the air intake air and observe and measure the time when oil spots begin to appear on the convex paper. This is the oil non-spraying time of the pump. If the above conditions are not met, stop pumping air after 1 minute and observe whether there are obvious spots on the concave paper. If there are more than 3 oil spots with a diameter of more than 1mm, it is judged as unqualified. Before the test, wipe the parts outside the test box clean. 7.4 Determination of the minimum starting temperature
7.4.1 Test conditions
The minimum starting temperature should be set. When starting the micro-start test, if the temperature is too low to start, a vacuum pump with a certain viscosity can be used. The viscosity of the vacuum pump used in the micro-start test must be the same as the vacuum pump at the minimum starting temperature specified by the manufacturer.
7.4.2 Test method
After the test oil is injected into the pump, it should be allowed to run for about 10 hours and then checked whether it can start. 7.5 Determination of oil
Before the test, the pump should be cleaned immediately.
After running for at least 1 hour, it should be measured and touched. There should be no obvious signs of lubrication. The test should be carried out within 1 hour. 7. The maximum allowable water-gas filling capacity and water-heat-gas filling quantity shall be determined according to 5.10 of IB/T6333-1997. Inspection rules 8.1 All pumps must be inspected and qualified before leaving the factory, and the product quality certificate shall be attached. B.2 The acid test of the pump is divided into type test and exit test. 8.3 The frequency of the type test is specified in 5.15.2, 5.3, 5.5, 5.6, 5.7, 5.8, and 5.12. B.4 Type test can be carried out in one of the following situations: a) Trial type identification of new products or old products transferred to the factory for production; 5 When there are major changes in the design, process or materials used of the products in normal production; 6) For the products in normal production, a test should be carried out once a year or a certain period of time, and the samples should be disassembled and inspected according to the provisions of Chapter 6; 7) When the product that has been suspended for more than two years resumes production, and the factory test results are significantly different from the last type test; 8. 5. The test items are:
a) Limited
b) No oil spray:
No oil leakage,
Special orders, acceptance according to the ordered technical plan. 9. Marking, packaging, transportation and storage
JB/T$9441999
9.1 Each case should be equipped with a product label in an appropriate position. The label number and size should comply with the provisions of GB 11306. The label should indicate:
! The name of the manufacturing factory, the name of the country for overseas products: b) Product type 9.2 Each pump shall be marked with the "turn direction" symbol at the corresponding position, and the water-cooled pump shall also be marked with the words "water inlet", "water outlet", "add oil", "drain oil", etc. 9.3 The pumps shall be stored in pairs to avoid rust and damage. 9.4 Each pump shall be accompanied by the following documents: a) Product certificate: b) Packing list: ) Product manual. If there is no indication on the terminal box of the machine, there shall also be a motor control line diagram. 9.5 For unpacking, the pump inlet and outlet must be sealed, and all products and accompanying documents should be packed in plastic bags and properly placed in the packing box. 9.6 The packaging should comply with the requirements of GB191 and GB/T13384.
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