CN213812773U - Be applied to dry gas seal's for pump pressure testing verifying attachment - Google Patents
Be applied to dry gas seal's for pump pressure testing verifying attachment Download PDFInfo
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- CN213812773U CN213812773U CN202023061240.2U CN202023061240U CN213812773U CN 213812773 U CN213812773 U CN 213812773U CN 202023061240 U CN202023061240 U CN 202023061240U CN 213812773 U CN213812773 U CN 213812773U
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Abstract
The utility model discloses a pressure test inspection device applied to dry gas seal for pumps, which comprises a breathing filter, an air compressor, an air storage tank, a refrigeration unit, a pressure reducing valve, a pressure gauge, a flowmeter and a seal inspection structure, the air inlet end of the air compressor is communicated with the breathing filter, the air outlet end of the air compressor is connected with the air inlet end of the air storage tank, the air outlet end of the air storage tank is connected with the air inlet end of the cold drying unit, a pressure reducing valve is arranged between the air outlet end of the cold drying unit and the air inlet end of the flowmeter, a pressure gauge is connected between the pressure reducing valve and the air inlet end of the flowmeter, the sealing inspection structure is an integrated dry gas seal, a simulation pump and a sealing structure, the simulation pump is provided with a simulation medium outlet and a simulation medium inlet, the dry gas is provided with an air inlet in a sealing mode, and the air outlet end of the flowmeter is connected with the air inlet. The utility model discloses a be applied to dry gas seal's pressure testing verifying attachment for pump has the effectual advantage of inspection.
Description
Technical Field
The utility model relates to a sealed inspection field especially relates to a be applied to dry gas seal's for pump pressure testing verifying attachment.
Background
The dry gas seal is a novel shaft end seal for gas seal, is suitable for high-speed high-pressure equipment, has long service life and can realize zero leakage of sealing medium. The leakage amount of the dry gas seal has strict requirements, according to JB/T11289 and 2012, the dry gas seal needs to be subjected to a product test to detect the leakage amount of the sealing gas, the product test of the dry gas seal for the pump comprises a dynamic test, a static test and visual inspection, and a device for performing the dynamic test and the static test on the dry gas seal product for the pump is absent at present.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a be applied to dry gas seal's pressure testing verifying attachment for pump has the effectual advantage of inspection.
The technical scheme of the utility model is that:
the utility model provides a be applied to dry gas seal's for pump pressure testing verifying attachment, is including breathing filter, air compressor, gas holder, cold dry unit, relief pressure valve, manometer, flowmeter and sealed inspection structure, be equipped with on air compressor's the inlet end breathe the filter, air compressor's the end of giving vent to anger is connected the inlet end of gas holder, the end of giving vent to anger of gas holder is connected the inlet end of cold dry unit, be equipped with the relief pressure valve between the inlet end of the end of giving vent to anger of cold dry unit and flowmeter, be connected the manometer between the inlet end of relief pressure valve and flowmeter, sealed inspection structure includes dry gas seal, analog pump and the seal structure of integral type, the analog pump is equipped with analog medium export and analog medium entry, the dry gas seal is equipped with the air inlet, the flowmeter give vent to anger the end with the air inlet is connected.
The working principle of the technical scheme is as follows:
and (3) operating an air compressor, compressing the sealing gas filtered by the breathing filter into a gas storage tank, drying the compressed sealing gas by a freeze drying unit, and conveying the dried gas into a dry gas seal, wherein the numerical value shown by a flowmeter at the dry gas seal gas inlet is the dry gas seal leakage amount. The testing process comprises static testing and dynamic testing, wherein during the static testing, the simulation pump is closed, a pressure gauge at the air inlet is observed, the pressure of the sealing gas is controlled by operating the pressure reducing valve to reach the testing required pressure, the pressure of the simulation medium is adjusted, and the dry gas sealing leakage rate is detected by using the flowmeter; during dynamic inspection, operating the pressure reducing valve to control the sealing gas pressure to reach the required pressure for test, adjusting the pressure of the simulation medium, starting the simulation pump after the sealing gas and the simulation medium are well adjusted, controlling the rotating speed of the pump, observing the pressure gauge at the air inlet, detecting the leakage rate of the dry gas seal by using the flowmeter, adjusting the rotating speed of the pump to the required pressure for test after two times of continuous parking and starting, and detecting the leakage rate of the dry gas seal by using the flowmeter.
The leakage amount of the sealing gas of the dry gas seal is dynamically detected and statically detected, the leakage amount of the sealing gas under different pressures and different rotating speeds can be detected, and the detection result is accurate and specific.
In a further technical scheme, a filter is connected between the air outlet end of the cooling and drying unit and the pressure reducing valve, so that the air dried by the cooling and drying unit can be further purified.
In a further technical scheme, the gas storage tank is a medium-pressure gas storage tank, and the pressure meets the inspection pressure.
In a further technical scheme, the gas storage tank is made of alloy steel, and the cost of the gas storage tank made of alloy steel is low.
The utility model has the advantages that:
1. the sealed gas is generated, stored, dried and filtered, so that clean gas can be obtained, the influence on inspection is reduced, and the subsequent instruments are protected;
2. the leakage rate of the sealing gas of the dry gas seal is dynamically detected and statically detected, so that the leakage rate of the sealing gas under different pressures and different rotating speeds can be detected, and the detection result is accurate and specific;
3. a filter is connected between the air outlet end of the cooling and drying unit and the pressure reducing valve, so that the air dried by the cooling and drying unit can be further purified;
4. the gas holder is alloy steel material, and alloy steel material's gas holder cost is lower.
Drawings
Fig. 1 is the embodiment of the utility model provides a be applied to dry gas seal's pressure testing verifying attachment for pump's overall structure schematic diagram.
Description of reference numerals:
1. a sealing structure; 2. sealing with dry gas; 3. simulating a pump; 4. an air compressor; 5. a respiratory filter; 6. a valve; 7. a gas storage tank; 8. a cold drying unit; 9. a filter; 10. a pressure reducing valve; 11. a pressure gauge; 12. a flow meter; 13. an electric motor.
Detailed Description
The embodiments of the present invention will be further explained with reference to the drawings.
Example (b):
as shown in fig. 1, a pressure test device applied to dry gas seal for pumps comprises a breathing filter 5, an air compressor 4, an air storage tank 7, a refrigeration unit 8, a pressure reducing valve 10, a pressure gauge 11, a flow meter 12 and a seal inspection structure, wherein the air compressor 4 is provided with a motor 13, an air inlet end of the air compressor 4 is communicated with the breathing filter 5, an air outlet end of the air compressor 4 is connected with an air inlet end of the air storage tank 7, an air outlet end of the air storage tank 7 is connected with an air inlet end of the refrigeration unit 8, the pressure reducing valve 10 is arranged between the air outlet end of the refrigeration unit 8 and the air inlet end of the flow meter 12, the pressure gauge 11 is connected between the pressure reducing valve 10 and the air inlet end of the flow meter 12, the seal inspection structure is a seal structure 1, a simulation pump 3 and a dry gas seal 2 which are integrated, the simulation pump 3 is connected with the motor 13, the outlet end of the flow meter 12 is connected to the inlet port.
The working principle of the technical scheme is as follows:
the motor 13 drives the air compressor to operate, the sealing gas filtered by the breathing filter 5 is compressed into the gas storage tank 7, the compressed sealing gas is dried by the cold drying unit 8 and then is conveyed into the dry gas seal, and the numerical value shown by the flowmeter 12 at the dry gas seal gas inlet is the dry gas seal leakage amount. The testing process comprises static testing and dynamic testing, wherein during the static testing, a motor 13 of the simulation pump 3 is closed, a pressure gauge 11 at an air inlet is observed, a pressure reducing valve 10 is operated to control the pressure of the sealing gas to reach the testing required pressure, the pressure of the simulation medium is adjusted, and a flowmeter 12 is used for detecting the leakage rate of the dry gas seal; during dynamic inspection, a motor 13 of the simulation pump 3 is started, a pressure gauge 11 at the air inlet is observed, the pressure reducing valve 10 is operated to control the pressure of the sealing gas to reach the required pressure for testing, the pressure of the simulation medium is adjusted, the motor 13 is operated to control the rotating speed, the flowmeter 12 is used for detecting the leakage rate of the dry gas seal, after two times of continuous parking and starting are completed, the rotating speed of the pump is adjusted to the required testing requirement, and the flowmeter 12 is used for detecting the leakage rate of the dry gas seal.
A series of equipment including the air compressor 4, the breathing filter 5, the air storage tank 7 and the refrigeration drying unit 8 are used for manufacturing compressed air meeting the inspection requirements, dynamic detection and static detection are carried out on the leakage amount of the sealing gas of the dry gas seal, the leakage amount of the sealing gas under different pressures and different rotating speeds can be detected, and the inspection result is accurate and specific.
In another embodiment, as shown in fig. 1, the gas inlet end and the gas outlet end of the gas storage pipe are respectively provided with a valve 6, so that the compressed gas can be conveniently stored in the gas storage tank 7 for a long time, and impurities in the gas can be precipitated.
In another embodiment, as shown in fig. 1, a filter 9 is connected between the air outlet of the refrigeration unit 8 and the pressure reducing valve 10, so as to further purify the air dried by the refrigeration unit 8.
In another embodiment, the gas tank 7 is a medium pressure gas tank, and the gas pressure of the gas tank 7 at the time of inspection is 3MPa, which is medium pressure.
In another embodiment, the gas storage tank 7 is made of alloy steel, and the cost of the gas storage tank 7 made of alloy steel is low.
In another embodiment, the air compressor 4 and the breathing filter 5 are provided in two sets, so that the efficiency of gas compression is improved and the inspection time is shortened without increasing much cost.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (4)
1. The utility model provides a be applied to dry gas seal's for pump pressure testing verifying attachment, a serial communication port, including breathing filter, air compressor, gas holder, cold dry unit, relief pressure valve, manometer, flowmeter and sealed inspection structure, be equipped with on air compressor's the inlet end breathe the filter, air compressor's the end of giving vent to anger is connected the inlet end of gas holder, the end of giving vent to anger of gas holder is connected the inlet end of cold dry unit, be equipped with the relief pressure valve between the inlet end of the end of giving vent to anger of cold dry unit and flowmeter, be connected the manometer between the inlet end of relief pressure valve and flowmeter, sealed inspection structure includes dry gas seal, analog pump and seal structure of integral type, dry gas seal is equipped with the air inlet, the end of giving vent to anger of flowmeter with the air inlet is connected.
2. The device for testing the pressure test of the dry gas seal for the pump according to claim 1, wherein a filter is connected between the gas outlet end of the refrigeration dryer unit and the pressure reducing valve.
3. The device for testing the pressure test of the dry gas seal for the pump according to claim 1, wherein the gas storage tank is a medium-pressure gas storage tank.
4. The device for testing the pressure test of the dry gas seal for the pump according to claim 3, wherein the gas storage tank is made of alloy steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023061240.2U CN213812773U (en) | 2020-12-17 | 2020-12-17 | Be applied to dry gas seal's for pump pressure testing verifying attachment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023061240.2U CN213812773U (en) | 2020-12-17 | 2020-12-17 | Be applied to dry gas seal's for pump pressure testing verifying attachment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213812773U true CN213812773U (en) | 2021-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023061240.2U Active CN213812773U (en) | 2020-12-17 | 2020-12-17 | Be applied to dry gas seal's for pump pressure testing verifying attachment |
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| Country | Link |
|---|---|
| CN (1) | CN213812773U (en) |
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2020
- 2020-12-17 CN CN202023061240.2U patent/CN213812773U/en active Active
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