CN216695425U - Gas supply system - Google Patents
Gas supply system Download PDFInfo
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- CN216695425U CN216695425U CN202220312677.9U CN202220312677U CN216695425U CN 216695425 U CN216695425 U CN 216695425U CN 202220312677 U CN202220312677 U CN 202220312677U CN 216695425 U CN216695425 U CN 216695425U
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- gas
- valve
- supply system
- gas supply
- detection device
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Abstract
The utility model discloses a gas supply system for a detection device, comprising: a gas source for supplying a gas; a first gas tank for storing the gas supplied by the gas source and passing the stored gas to a detection device for gas tightness detection; a first valve disposed between the gas source and the first gas reservoir, wherein the first valve closes when gas stored in the first gas reservoir is passed to the detection device for the gas tightness detection.
Description
Technical Field
The utility model relates to the field of airtightness tests, in particular to a gas supply system.
Background
In modern industries, for equipment involving fluid, the airtightness of the equipment for the fluid often directly affects the reliability and stability of the product, and a slight leakage may cause the product to fail, so that the airtightness of the equipment needs to be tested.
One way of testing the air tightness is to input air into the device under test from the testing device and monitor whether the device under test has an air leakage phenomenon. In order to make the test result more accurate, the gas supply system of the testing apparatus should have the capability of continuously providing stable pressure, however, the gas supply system of the existing testing apparatus generally has some problems, for example, if a booster pump and a solenoid valve are used in the testing apparatus, the solenoid valve may fail due to the inconsistent pressure difference between the gas inlet and the gas outlet during the boosting process, the pressure of the gas source may also fluctuate in a parabolic manner along with the operation of the booster pump, and these eventually affect the test pressure, and thus the test result; in addition, because the electromagnetic coil of the electromagnetic valve can generate heat when in use, the air temperature in the test loop is inconsistent, the test result of the differential pressure sensor is influenced, and the misjudged tested equipment can be reworked, which causes serious waste of manpower and material resources.
Therefore, there is a need in the art for a gas supply system that solves the above-mentioned problems in the prior art.
SUMMERY OF THE UTILITY MODEL
To solve the above technical problem, embodiments of the present invention are directed to providing a gas supply system.
The technical scheme of the utility model is realized as follows: a gas supply system for a detection apparatus, the gas supply system comprising: a gas source for supplying a gas; a first gas tank for storing the gas supplied by the gas source and passing the stored gas to a detection device for gas tightness detection; a first valve disposed between the gas source and the first gas reservoir, wherein the first valve closes when gas stored in the first gas reservoir is passed to the detection device for the gas tightness detection.
According to the embodiment of the utility model, the gas supply system is used for supplying gas to the detection equipment, and comprises the gas source, the first gas storage tank and the first valve, wherein the gas source charges the first gas storage tank before the gas supply system supplies gas to the detection equipment, and when the gas supply system supplies gas to the detection equipment, the first valve is closed so that the gas source stops charging the first gas storage tank and supplies gas to the detection equipment through the first gas storage tank.
Drawings
Fig. 1 is a schematic view of a conventional gas supply system.
Fig. 2 is a schematic diagram of a gas supply system according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a gas supply system according to another embodiment of the present invention.
Fig. 4 is a schematic diagram of a gas supply system according to another embodiment of the present invention.
Fig. 5 is a schematic diagram of a gas supply system according to another embodiment of the present invention.
Fig. 6 is a schematic diagram of a gas supply system according to another embodiment of the present invention.
Fig. 7 is a schematic diagram of a gas supply system according to another embodiment of the present invention.
Fig. 8 is a schematic diagram of a gas supply system according to another embodiment of the present invention.
Fig. 9 is a schematic diagram of a gas supply system according to another embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, which shows a schematic diagram of a gas supply system T of a conventional airtightness testing apparatus, the gas supply system T including a test line TL including a pressure source 1, a booster pump 2, a pressure regulating valve 3, an on-off solenoid valve 4, and a check valve 5 connected in series, wherein the booster pump 2 is connected to the pressure source 1, the pressure regulating valve 3 is connected between the booster pump 2 and the on-off solenoid valve 4, and the check valve 5 is disposed between the on-off solenoid valve 4 and a test inlet TI of the airtightness testing apparatus, when the gas supply system T starts to supply, the pressure source 1 supplies gas having a pressure of 5bar to 6bar to the booster pump 2, the booster pump 2 increases the pressure of the gas to 10bar, and then the pressure regulating pump 3 located downstream of the booster pump 2 in an intake direction as indicated by an arrow in fig. 1 adjusts the pressure of the gas to 9bar to be supplied to the test inlet TI of the airtightness testing apparatus, in addition, the gas supply system T further includes a control line CL having one end connected to the gas pressure source 1 and the other end connected to the pneumatic element inlet CI of the airtightness testing apparatus.
However, the above gas supply system has the following problems: in the boosting process of the booster pump 2, the on-off electromagnetic valve 4 fails due to inconsistency of the inlet pressure and the outlet pressure, and the pressure of the air pressure source 1 also fluctuates in a parabolic manner along with the work of the booster pump 2, so that the pressure of a test environment is unstable when test operation is executed, and the test result is directly influenced; because the test line TL and the control line CL are connected to the same main pipeline, the pressure of the main pipeline is rapidly reduced in the air inlet process of the booster pump 2, so that pneumatic components in the air supply system cannot be normally used, and the test result is influenced; when the tested equipment continuously leaks air, the air pressure source 1 can directly leak air from the tested equipment, so that the air pressure of the air pressure source 1 is reduced, and the situation that the pressure of the air pressure source 1 is insufficient can occur after the test of the current round is finished and when the next round of test is continuously carried out; the electromagnetic coil of the on-off electromagnetic valve 4 in the test line TL can generate heat when in use, so that the air passing through the on-off electromagnetic valve 4 is heated, the air at one end of the differential pressure sensor in the test device T expands in volume due to high temperature, the air cooling speed of the tested equipment is higher, and the differential pressure sensor is misjudged when comparing the final result; if the single test time is long and the pressure of the air pressure source 1 is unstable and suddenly low during inflation, the device to be tested needs to wait for 30 seconds for example when being inflated to enter the pressure holding stage after the internal air pressure of the device to be tested is stable.
In order to solve the above-described problems of the conventional gas supply system, referring to fig. 2, an embodiment of the present invention provides a gas supply system SS for a detection device TD, the gas supply system SS including: a gas source 10, said gas source 10 for supplying a gas; a first gas tank 21 for storing the gas supplied by the gas source 10 and passing the stored gas to a detection device TD for gas tightness detection; a first valve 31 disposed between the gas source 10 and the first gas tank 21, wherein the first valve 31 is closed when the gas stored in the first gas tank 21 is passed to the detection device TD for the airtightness detection.
According to the gas supply system SS provided by the embodiment of the utility model for supplying gas to the detection device TD, the gas supply system SS comprises the gas source 10, the first gas tank 21 and the first valve 31, the first gas tank 21 is inflated by the gas source 10 before the gas supply system SS supplies gas to the detection device TD, and when the gas supply system SS supplies gas to the detection device TD, the first valve 31 is closed to make the gas source 10 stop inflating to the first gas tank 21 and supply gas to the detection device TD from the first gas tank 21.
In order to further improve the working efficiency of the gas supply system, preferably, referring to fig. 3, said gas supply system SS further comprises: a second valve 32 disposed between the first air tank 21 and the detection device TD, the second valve 32 being closed when the first air tank 21 is charged with air; a second gas tank 22 connected in parallel with the first gas tank 21, the second gas tank 22 being adapted to store the gas supplied by the gas source 10 and to pass the stored gas to the detection device TD for the detection of gas tightness; a third valve 33 disposed between the gas source 10 and the second gas tank 22, wherein the second valve 32 and the third valve 33 are closed when the gas stored in the second gas tank 22 is passed to the detection device TD for the airtightness detection; a fourth valve 34 disposed between the second reservoir 22 and the detection device TD, wherein the fourth valve 34 is closed when the second reservoir 22 is charged.
In the gas supply system SS shown in fig. 3, two gas supply branches connected in parallel are provided, wherein the first gas supply branch L1 includes a first valve 31, a first gas tank 21 and a second valve 32, and the second gas supply branch L2 includes a third valve 33, a second gas tank 22 and a fourth valve 34, which can supply gas to the test device TD independently of each other, and the first gas tank 21 and the second gas tank 22 can be charged independently of each other, so that even when the gas tank in one of the gas supply branches needs to be charged, gas can be supplied to the test device TD through the other gas supply branch, for example, while the second gas tank 22 is charged, the first valve 31 and the fourth valve 34 can be closed and the second valve 32 and the third valve 33 can be opened, gas can be supplied to the test device TD through the first gas supply branch L1, therefore, the gas supply to the detection device TD can be prevented from being stopped due to the inflation of the gas storage tank, and the working efficiency of the gas supply system is improved. In addition, when the gas supply to the detection device TD is ended and the detection device TD starts to perform the detection operation, the second valve 32 and the fourth valve 34 may be closed, in which case the gas pressure in the gas supply system SS is not affected even if there is a gas leakage in the product detected by the detection device TD, and the gas supply system SS can still supply gas having a desired pressure at the time of the next gas supply operation.
According to a preferred embodiment of the utility model, referring to fig. 4, said gas supply system SS further comprises: a booster pump 40 disposed between said gas source 10 and said first valve 31 and said third valve 33, said booster pump 40 for boosting the pressure of the gas output from said gas source 10.
In the gas supply system SS shown in fig. 4, the booster pump 40 is provided on the main line, whereby, when the booster pump 40 is being charged, the booster pump 40 can be disconnected from the first gas supply branch L1 and the second gas supply branch L2 by closing the first valve 31 and the third valve 33, and thus the fluctuation of the gas caused by the booster pump 40 does not affect the pressures in both gas supply branches, nor the pressure of the gas supplied to the detection device TD.
In order to make the pressure supplied to the detection device TD more precise, preferably, with reference to fig. 5, the gas supply system SS further comprises: a first pressure regulating valve 50 provided between the booster pump 40 and the first and third valves 31 and 33, the first pressure regulating valve 50 regulating a pressure of gas output from the booster pump 40.
The high-pressure pump is used for supplying air at high pressure and the air is properly regulated through the pressure regulating valve, so that large pressure fluctuation can be avoided, and the pressure requirement of air supply can be met.
According to a preferred embodiment of the utility model, with reference to fig. 6, said gas supply system SS further comprises: a first check valve 61 provided between the first valve 31 and the first gas container 21 and a second check valve 62 provided between the third valve 33 and the second gas container 22 to prevent the gas stored in the first and second gas containers 21 and 22 from flowing in a direction opposite to the gas supply direction.
By providing check valves at positions upstream of the first and second gas tanks 21 and 22 in the gas supply direction, respectively, gas is prevented from flowing back toward the gas source 10, enabling the first and second gas tanks 21 and 22 to provide more stable gas pressure, and also improving the efficiency of charging the first and second gas tanks 21 and 22.
In order to more precisely control the pressure of the gas supplied to the detection device TD, preferably, referring to fig. 7, the gas supply system SS further includes a pressure gauge 70 disposed between the second and fourth valves 32 and 34 and the detection device TD, the pressure gauge 70 being used to monitor the pressure of the gas output from the gas supply system.
By monitoring the pressure of the gas outputted from the gas supply system by the pressure gauge 70, it is possible to know the internal pressure of the gas supply system SS, and in case of insufficient pressure, it is possible to switch the supply line and perform the charging operation for the gas container with insufficient pressure, and the measurement result of the pressure gauge can be used for analyzing the performance of the product tested by the test equipment.
According to a preferred embodiment of the present invention, with reference to fig. 8, said gas supply system SS further comprises: a first exhaust valve 35 and a fifth valve 36 arranged between said second valve 32 and said detection device TD; a second exhaust valve 37 and a sixth valve 38 arranged between said fourth valve 34 and said detection device TD; wherein the first exhaust valve 35 and the second exhaust valve 37 are used for exhausting gas in at least a part of the gas supply system SS.
After the gas supply system SS supplies gas to the detection device TD to perform the airtightness detection, it is preferable that the gas supply system SS should be disconnected from the detection device TD in order not to affect the detection result of the detection device TD, however, gas remaining in the pipe line of the gas supply system SS continues to be supplied to the detection device TD to affect the detection result of the detection device TD, and therefore, by providing exhaust valves between the two gas tanks and the detection device TD, it is possible to evacuate gas remaining in a part of the pipe line of the gas supply system SS to avoid the influence of the gas supply system SS on the detection result of the detection device TD.
According to a preferred embodiment of the present invention, the first valve 31, the second valve 32, the third valve 33, the fourth valve 34, the fifth valve 36 and the sixth valve 38 are solenoid valves.
According to a preferred embodiment of the utility model, with reference to fig. 9, said gas supply system SS further comprises: a filter 80 disposed between the first air tank 21 and the detection device for filtering the gas supplied to the detection device TD.
According to another preferred embodiment of the present invention, referring to fig. 9, the filter 80 includes: an oil mist filter 81 and an air filter 82, wherein the oil mist filter 81 is arranged between the air filter 82 and the detection device TD.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A gas supply system for a detection apparatus, characterized by comprising:
a gas source for supplying a gas;
a first gas tank for storing the gas supplied by the gas source and passing the stored gas to a detection device for gas tightness detection;
a first valve disposed between the gas source and the first gas reservoir, wherein the first valve closes when gas stored in the first gas reservoir is passed to the detection device for the gas tightness detection.
2. The gas supply system according to claim 1, further comprising:
a second valve disposed between the first air reservoir and the detection device, the second valve being closed when the first air reservoir is charged;
a second gas tank connected in parallel with the first gas tank for storing the gas supplied by the gas source and passing the stored gas to the detection device for the gas tightness detection;
a third valve disposed between the gas source and the second gas tank, wherein the second valve and the third valve are closed when the gas stored in the second gas tank is passed to the detection apparatus for the gas tightness detection;
a fourth valve disposed between the second air reservoir and the detection device, wherein the fourth valve is closed when the second air reservoir is charged.
3. The gas supply system according to claim 2, further comprising: a booster pump disposed between the gas source and the first and third valves, the booster pump for boosting the pressure of the gas output from the gas source.
4. The gas supply system of claim 3, further comprising: a first pressure regulating valve disposed between the booster pump and the first and third valves, the first pressure regulating valve for regulating a pressure of gas output from the booster pump.
5. The gas supply system according to claim 2, further comprising: a first check valve disposed between the first valve and the first gas tank and a second check valve disposed between the third valve and the second gas tank to prevent the gas stored in the first gas tank and the second gas tank from flowing in a direction opposite to a gas supply direction.
6. The gas supply system of claim 2, further comprising pressure gauges disposed between the second and fourth valves and the detection device, the pressure gauges being configured to monitor a pressure of the gas output from the gas supply system.
7. The gas supply system according to claim 2, further comprising:
a first exhaust valve and a fifth valve disposed between the second valve and the detection device;
a second exhaust valve and a sixth valve disposed between the fourth valve and the detection device;
wherein the first and second exhaust valves are to exhaust gas in at least a portion of the gas supply system.
8. The gas supply system according to claim 7, wherein the first valve, the second valve, the third valve, the fourth valve, the fifth valve, and the sixth valve are solenoid valves.
9. The gas supply system according to claim 1, further comprising: a filter disposed between the first air reservoir and the detection device.
10. The gas supply system of claim 9, wherein the filter comprises: an oil mist filter and an air filter, wherein the oil mist filter is arranged between the air filter and the detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220312677.9U CN216695425U (en) | 2022-02-16 | 2022-02-16 | Gas supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220312677.9U CN216695425U (en) | 2022-02-16 | 2022-02-16 | Gas supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216695425U true CN216695425U (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220312677.9U Active CN216695425U (en) | 2022-02-16 | 2022-02-16 | Gas supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216695425U (en) |
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2022
- 2022-02-16 CN CN202220312677.9U patent/CN216695425U/en active Active
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