CN218885325U - Airtightness detection device and airtightness detection system - Google Patents
Airtightness detection device and airtightness detection system Download PDFInfo
- Publication number
- CN218885325U CN218885325U CN202223445466.1U CN202223445466U CN218885325U CN 218885325 U CN218885325 U CN 218885325U CN 202223445466 U CN202223445466 U CN 202223445466U CN 218885325 U CN218885325 U CN 218885325U
- Authority
- CN
- China
- Prior art keywords
- valve
- air
- gas
- pressure gauge
- detection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The utility model discloses an air tightness detection device and an air tightness detection system, in particular to the technical field of air tightness detection of fuel cells, comprising an air source valve and a first valve, wherein the air outlet end of the first valve is connected with one end of an object to be detected; the air inlet end of the second valve is connected with the other end of the object to be detected; the pressure gauge, the one end of pressure gauge with the end of giving vent to anger of air supply valve is connected, the other end of pressure gauge with the inlet end of second valve is connected, and gas tightness detecting system includes airtight detection device and determinand district, the utility model discloses simple structure is applicable to the battery module test of various patterns and leaks outward and leak the function in and, and the cost of manufacture is low, and is small.
Description
Technical Field
The utility model relates to a fuel cell detection device technical field, more specifically says, the utility model relates to an airtight detection device and gas tightness detecting system.
Background
The fuel cell stack is formed by stacking a plurality of fuel cells in series, wherein each fuel cell is formed by a plurality of components. The cell stack is housed inside the outer case of the cell stack, the opening of the outer case is sealed, and the cell stack housed inside is sealed accordingly. If a gas leak is detected after the assembly of the stack is completed, it is difficult to detect which component caused the leak, and therefore, it is necessary to perform a gas tightness test of the stack when the stack is manufactured.
The existing air tightness detecting device 10 is shown in fig. 1, and the leak detecting module 11 and the pressure module 12 are on one machine, so the design has the disadvantage that the air tightness detecting device 10 can only be used for fuel cells basically, and needs a plurality of repeated elements such as an electromagnetic valve, a pressure gauge and a flowmeter, and in addition, a pressure cylinder module is not a necessary requirement for leak detection on each fuel cell. However, the general air tightness detecting device on the market cannot measure the inner leakage function and can only measure the outer leakage of the fuel cell because the air tightness detecting device is not designed for the test of the fuel cell.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the embodiment of the utility model provides an airtight detection device separates the board with the pressure cylinder module to simplify multiunit repeated component and only need be a set of, such design is applicable in the outer test of leaking and interior test of leaking of various battery module, simplifies airtight required step that detects during the use, simple structure and then reduce the cost of manufacture, and is small simultaneously, and occupation space is few.
In order to achieve the above purpose, the utility model provides a following technical scheme: an air-tightness detecting device comprising:
the air inlet of the air source valve is connected with an external air source and used for controlling air entering the air tightness detection device;
the air outlet end of the first valve is connected with one end of the object to be detected;
the air inlet end of the second valve is connected with the other end of the object to be detected;
and one end of the pressure gauge is connected with the air outlet end of the air source valve, and the other end of the pressure gauge is connected with the air inlet end of the second valve.
Optionally, the apparatus further includes a flow meter, one end of the flow meter is connected to the gas outlet end of the first valve, and the other end of the flow meter is connected to the object to be measured.
Optionally, the detection device further comprises an electro-pneumatic proportional valve, and one end of the electro-pneumatic proportional valve is connected with the air source valve, the first valve and the pressure gauge.
Optionally, the detection device further comprises a check valve connected to the air supply valve and the first valve.
Optionally, the external gas source is an inert gas or nitrogen.
Optionally, the detection device further comprises a controller electrically connected to the air source valve, the first valve, the second valve and the pressure gauge, for controlling the working states of the air source valve, the first valve, the second valve and the pressure gauge.
Alternatively, the object region includes pressure cylinders, and the object is placed between the pressure cylinders.
Optionally, the test object is a cell stack.
Optionally, a casing and a display screen are arranged on the outer side of the device, the display screen is located on one side of the casing, the display screen is electrically connected with the controller, and a first plate penetrating joint, a second plate penetrating joint, a third plate penetrating joint, a fourth plate penetrating joint, a fifth plate penetrating joint and a sixth plate penetrating joint are arranged on the outer side of the casing.
The air tightness detection system comprises an air tightness detection device, wherein the air tightness detection device is connected with an object area to be detected and used for accommodating an object to be detected.
Optionally, the system further comprises a module cartridge disposed between the detection device and the test object region.
Compared with the prior art, the utility model discloses a technological effect and advantage:
the utility model has the advantages of simple structure, and applicable outer hourglass test and interior hourglass test in various battery module, simplify airtight required step that detects during the use, the cost of manufacture, it is small simultaneously, occupation space is few.
Drawings
Fig. 1 is a schematic view of a conventional airtightness detection apparatus.
Fig. 2 is a schematic view of the air tightness detecting device of the present invention.
Fig. 3 is a schematic view of the air-tightness detecting system according to the first embodiment.
Fig. 4 is a schematic view of the air-tightness detecting system according to the second embodiment.
The reference signs are: 10. the device comprises an existing airtight detection device, 11 an existing leakage detection module, 12 an existing module, 100 an airtight detection device, 110 an air source valve, 120 an electro-pneumatic proportional valve, 130 a first valve, 140 a second valve, 150 a pressure gauge, 160 a flow meter, 170 a check valve, 180 a controller, 191 a first plate penetrating joint, 192 a second plate penetrating joint, 193 a third plate penetrating joint, 194 a fourth plate penetrating joint, 195 a fifth plate penetrating joint, 196 a sixth plate penetrating joint, 200 a gas supply source, 1000 (2000) airtight detection system, 300 an object area to be detected, 310 an object to be detected, 320 a pressure cylinder and 400 a module box.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The first embodiment is as follows:
the air-tightness detecting device as shown in fig. 2-3 comprises:
the air source valve 110, the electric air proportional valve 120, the first valve 130, the second valve 140, the pressure gauge 150, the flow meter 160, the check valve 170, the controller 180, the first plate penetrating joint 191, the second plate penetrating joint 192, the third plate penetrating joint 193, the fourth plate penetrating joint 194, the fifth plate penetrating joint 195 and the sixth plate penetrating joint 196.
The air source valve 110 has two ends, one end electrically connected to the first plate penetrating connector 191, and the other end electrically connected to the electric pneumatic proportional valve 120; the electro-pneumatic proportional valve 120 has three ends, a first end electrically connected to the air source valve 110, a second end electrically connected to the third through plate joint 193, and a third end electrically connected to the check valve 170, the first valve 130 and the pressure gauge 150 through the cross; the other end is electrically connected with the flowmeter 160; the flow meter 160 has two ends, one of which is electrically connected to the first valve 130, and the other of which is electrically connected to the fifth through-plate connector 195; the pressure gauge 150 has two ends, one of which is electrically connected to the check valve 170, the first valve 130 and the electro-pneumatic proportional valve 120 through a cross joint, and the other of which is electrically connected to the second valve 140 and the sixth penetration plate connector 196 through a reducing tee; the second valve has two ends, one of which is electrically connected to the pressure gauge 150 and the sixth plate-through connector 196 through the reducer tee, and the other of which is electrically connected to the second plate-through connector 192; the controller 180 is electrically connected to the air source valve 110, the electro-pneumatic proportional valve 120, the first valve 130, the second valve 140, the pressure gauge 150, the flow meter 160, and the check valve 170.
The gas source valve 110 is a switch for controlling gas entering the gas tightness detecting device 100; the first valve 130 is a switch for controlling the gas entering the object 310; the second valve 140 is a switch for controlling discharge of gas flowing out from the analyte 310; the air supply valve 110, the first valve 130, and the second valve 140 may be solenoid valves.
The electro-pneumatic proportional valve 120 is used to regulate the pressure of the gas, and the outlet pressure of the electro-pneumatic proportional valve 120 can be adjusted to a desired value preset by the user. The flow meter 160 is used to detect and display the leakage flow if the object has a leakage, and the flow meter 160 is a Mass Flow Meter (MFM) or any detector capable of measuring the flow of the fluid. The pressure gauge 150 is used to detect the pressure difference between the anode (high pressure side) and the cathode (low pressure side) of the object, and the pressure is a differential pressure transmitter or any detector capable of measuring the pressure difference. The controller 180 is used to control the air source valve 110, the electro-pneumatic proportional valve 120, the first valve 130, the second valve 140, the pressure gauge 150, the flow meter 160 and the check valve 170.
The air tightness detecting device 100 includes a housing (not shown) and a display screen (not shown), wherein the air source valve 110, the electro-pneumatic proportional valve 120, the first valve 130, the second valve 140, the pressure gauge 150, the flow meter 160, the check valve 170 and the controller 180 are located in the housing (not shown), the display screen (not shown) is located on one side of the housing (not shown), the display screen (not shown) is electrically connected to the controller 180, the display screen (not shown) can be a touch screen, a user can set and operate the air tightness detecting device 100 through the display screen (not shown), and the first plate penetrating connector 191, the second plate penetrating connector 192, the third plate penetrating connector 193, the fourth plate penetrating connector 194, the fifth plate penetrating connector 195 and the sixth plate penetrating connector 196 are also located on one or more sides of the housing (not shown).
The first plate passing joint 191, the second plate passing joint 192, the third plate passing joint 193, the fourth plate passing joint 194, the fifth plate passing joint 195 and the sixth plate passing joint 196 are used for connecting external devices, wherein the first plate passing joint 191 is an air inlet, the second plate passing joint 192, the third plate passing joint 193 and the fourth plate passing joint 194 are air outlets, the fifth plate passing joint 195 is a test air inlet, and the sixth plate passing joint 196 is a test air outlet. The first plate passing joint 191, the second plate passing joint 192, the third plate passing joint 193, the fourth plate passing joint 194, the fifth plate passing joint 195 and the sixth plate passing joint 196 are metal components.
The air tightness detecting device 100 may further include one or more USB ports (not shown), ethernet ports (not shown) and a power port (not shown), wherein the USB ports (not shown), the ethernet ports (not shown) and the power port (not shown) are disposed on one or more sides of the housing (not shown).
The first embodiment is as follows:
FIG. 3 is a schematic view of a gas tightness detection system 1000 of the gas tightness detection apparatus 100 according to the first embodiment, illustrating the operation of the gas tightness detection apparatus 100 and the gas circuit flowing through the gas tightness detection system 1000:
1. a gas source valve 110 that controls the gas entering the gas tightness detecting device 100 is opened.
2. After the leakage detection gas enters the air tightness detection device 100 through the first plate penetrating connector 191, the pressure of the leakage detection gas is adjusted through the electric air proportional valve 120, and at the moment, the outlet pressure of the electric air proportional valve 120 can be adjusted to a value expected by a user.
3. The leakage detection gas is divided into two paths, one path passes through the first valve 130 → the flow meter 160 → the object to be detected 310; the other path is to the high pressure side of the pressure gauge 150.
4. The leakage detection gas flowing towards the object 310 will flow out of the object 310 and then will flow into two paths, one path will flow towards the low pressure end of the pressure gauge 150; the other path is advanced toward the second valve 140.
In this embodiment, the air tightness detecting device 1000 provides at least two leakage detecting methods, including a pressure-maintaining test and a flow rate test.
When the airtightness detection apparatus 100 of the present embodiment is used for the pressure holding test, the following operations are performed:
1. the gas source valve 110 and the first valve 130 are opened to allow the leak-detecting gas to flow into the gas tightness detecting device 100 and the object 310.
2. When the circuit is full of gas, the first valve 130 and the second valve 140 are closed.
3. The first valve 130 maintains the inlet pressure while the gas between the first valve 130 and the second valve 140 is maintained and becomes the loop area to be tested.
4. If there is a leakage in the object 310, the difference between the pressures at the high pressure side (before the first valve 130) and the low pressure side (before the second valve 140) of the pressure gauge 150 will be larger. If the pressure difference value is higher than the standard value, judging that air leakage exists; otherwise, it is determined that there is no air leakage.
When the airtightness detection apparatus 100 of the present embodiment is used for a flow rate test, the following operations are performed:
1. the gas source valve 110 and the first valve 130 are opened to allow the leak-detecting gas to flow into the gas tightness detecting device 100 and the object 310.
2. When the circuit is full of gas, the second valve 140 is closed.
3. If the analyte 310 has a leak, the flow meter 160 will display the leak flow. If the flow is higher than the standard value, judging that air leakage exists; otherwise, judging that no air leakage exists.
Example two:
fig. 4 is a schematic view of an air-tightness detecting system of the air-tightness detecting device 100 according to the second embodiment. The hermetic sealing detection system 2000 includes a module case 400 and a test object area 300. The object area 300 includes an object 310 and a cylinder 320, the object 310 is disposed between the cylinders 320, and the cylinder 320 applies a pressure to the object 310; the test object 310 has an anode input terminal, a cathode input terminal, a cooling (coolant) input terminal, an anode output terminal, a cathode output terminal, and a cooling output terminal. One end of the module box 400 is electrically connected to the air tightness detecting device 100, and the other end is electrically connected to the object area 300, and the module box is used for detecting whether the object 310 has inner leakage; the module case 400 has six terminals at both ends thereof, which are an anode input terminal, a cathode input terminal, a cooling (coolant) input terminal, an anode output terminal, a cathode output terminal, and a cooling output terminal, respectively, wherein the anode input terminal, the cathode input terminal, and the cooling input terminal connected to one side of the air tightness detecting device 100 are connected to the output terminal of the flow meter 160 through a pair of three connectors, and the anode output terminal, the cathode output terminal, and the cooling output terminal are connected to the input terminal of the second valve 140 through a pair of three connectors; the anode output terminal, the cathode output terminal, and the cooling output terminal of the module case 400 connected to one side of the test object area 300 are connected to the anode input terminal, the cathode input terminal, and the cooling input terminal of the test object 310, and the anode input terminal, the cathode input terminal, and the cooling input terminal of the module case 400 located at one side of the test object 310 are connected to the anode output terminal, the cathode output terminal, and the cooling output terminal of the test object 310.
The air-tight detection system 2000 of the present embodiment provides at least three ways of detecting leakage, including a pressure holding test, a flow rate test, and an internal leakage test.
The airtight testing system 2000 of the present embodiment performs a pressure-maintaining test.
1. The gas source valve 110 and the first valve 130 are opened to allow the leak-detecting gas to flow into the gas tightness detecting device 100 and the object 310.
2. When the circuit is full of gas, the first valve 130 and the second valve 140 are closed.
3. The first valve 130 maintains the inlet pressure, and the gas between the first valve 130 and the second valve 140 is maintained and becomes the loop area to be tested.
4. If there is a leakage in the object 310, the difference between the pressures at the high pressure side (before the first valve 130) and the low pressure side (before the second valve 140) of the pressure gauge 150 will be larger. If the pressure difference value is higher than the standard value, judging that air leakage exists; otherwise, it is determined that there is no air leakage.
The air-tight test system 2000 performs a flow test, and operates as follows:
1. the gas source valve 110 and the first valve 130 are opened to allow the leak-detecting gas to flow into the gas tightness detecting device 100 and the object 310.
2. When the circuit is full of gas, the second valve 140 is closed.
3. If the analyte 310 has a leak, the flow meter 160 will display the leak flow. If the flow is higher than the standard value, judging that air leakage exists; otherwise, it is determined that there is no air leakage.
The air-tight detection system 2000 performs an internal leak test, and operates as follows:
1. the anode of the object 310 is connected to the airtight inspection apparatus 100 through the module case 400, and the cathode of the object 310 is connected to the airtight inspection apparatus 100 through the module case 400.
2. The gas source valve 110 and the first valve 130 are opened to allow the leak-detecting gas to flow into the gas tightness detecting device 100 and the object 310.
3. When the circuit is full of gas, the first valve 130 and the second valve 140 are closed.
4. The first valve 130 maintains the inlet pressure, and the gas between the first valve 130 and the second valve 140 is maintained and becomes the loop area to be tested.
4. If the anode and the cathode of the object 310 leak, the pressure difference between the high pressure side (before the first valve 130) and the low pressure side (before the second valve 140) of the pressure gauge 150 will be larger. If the pressure difference value is higher than the standard value, judging that mutual leakage exists; otherwise, judging that no mutual leakage exists.
Finally, it is noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (11)
1. Airtight detection device, its characterized in that includes:
the air inlet of the air source valve is connected with an external air source and used for controlling air entering the air tightness detection device;
the air outlet end of the first valve is connected with one end of the object to be detected;
the air inlet end of the second valve is connected with the other end of the object to be detected;
and one end of the pressure gauge is connected with the air outlet end of the air source valve, and the other end of the pressure gauge is connected with the air inlet end of the second valve.
2. The airtightness detection apparatus according to claim 1, further comprising a flow meter, one end of the flow meter being connected to the gas outlet end of the first valve, and the other end of the flow meter being connected to the object to be measured.
3. The airtightness detection apparatus according to claim 1, further comprising an electro-pneumatic proportional valve, one end of which is connected to the gas source valve, the first valve and the pressure gauge.
4. The air tightness detection device of claim 1 further comprising a check valve connected to said air supply valve and said first valve.
5. The gas tightness detection device according to claim 1, wherein the external gas source is an inert gas or nitrogen.
6. The airtightness detection apparatus according to claim 1, further comprising a controller electrically connected to the gas source valve, the first valve, the second valve and the pressure gauge, for controlling the operating states of the gas source valve, the first valve, the second valve and the pressure gauge.
7. The airtightness detection apparatus according to claim 1, wherein the test object region includes pressure cylinders, and the test object is placed between the pressure cylinders.
8. The airtightness detection apparatus according to claim 1, wherein the object to be measured is a cell stack.
9. The airtightness detection apparatus according to claim 6, wherein a housing and a display screen are disposed on an outer side of the apparatus, the display screen is located on one side of the housing, the display screen is electrically connected to the controller, and a first through-plate connector, a second through-plate connector, a third through-plate connector, a fourth through-plate connector, a fifth through-plate connector and a sixth through-plate connector are disposed on an outer side of the housing.
10. An air-tightness detecting system, comprising the air-tightness detecting device according to any one of claims 1 to 8, wherein the air-tightness detecting device is connected with a region to be detected for accommodating the object to be detected.
11. The hermeticity detection system of claim 10, further comprising a module cartridge disposed between the detection device and the area under test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223445466.1U CN218885325U (en) | 2022-12-22 | 2022-12-22 | Airtightness detection device and airtightness detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223445466.1U CN218885325U (en) | 2022-12-22 | 2022-12-22 | Airtightness detection device and airtightness detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218885325U true CN218885325U (en) | 2023-04-18 |
Family
ID=85947071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223445466.1U Active CN218885325U (en) | 2022-12-22 | 2022-12-22 | Airtightness detection device and airtightness detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218885325U (en) |
-
2022
- 2022-12-22 CN CN202223445466.1U patent/CN218885325U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104215290B (en) | Differential pressure type volume measurement method | |
| CN115326305A (en) | Battery package gas tightness detection device | |
| CN110987324A (en) | Fuel cell air tightness testing device and testing method | |
| CN107907273B (en) | A kind of partially sealed outer surface air-tightness detection method of product | |
| CN111693229A (en) | Electric pile testing device and system with air tightness online detection function | |
| CN218885325U (en) | Airtightness detection device and airtightness detection system | |
| CN210426918U (en) | External air tightness testing device | |
| CN210036906U (en) | Negative pressure source device and gas meter verification gas circuit system | |
| CN218444350U (en) | Fuel cell stack gas tightness detecting system | |
| CN108534963A (en) | A kind of water proofing property detection method and system | |
| CN215811476U (en) | Flow type air tightness testing device | |
| CN212432449U (en) | Automatic leakage detection device for fuel cell stack | |
| CN216410654U (en) | Valve housing strength detection device | |
| CN215178450U (en) | Detection apparatus for graphite bipolar plate runner crackle | |
| CN212567830U (en) | Electric pile testing device and system with air tightness online detection function | |
| CN114076661A (en) | Automatic leakage detection device and method for fuel cell stack | |
| CN210400757U (en) | Full-automatic sealing test and nitrogen filling integrated machine | |
| CN220322645U (en) | Tightness test system | |
| CN216621652U (en) | Direct-pressure and differential-pressure integrated air tightness detector | |
| CN210603776U (en) | Detection apparatus for fuel cell gas tightness | |
| CN218330467U (en) | Airtight detector | |
| CN219694466U (en) | Assembled battery leak detection structure and system | |
| CN115655591B (en) | Self-checking device and self-checking method of helium mass spectrometer leak detector | |
| CN215639983U (en) | Leakage detection device for bipolar plate | |
| CN211527733U (en) | Differential pressure leak detection mechanism and differential pressure leak detector thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |