CN219624982U - Battery helium detection device - Google Patents
Battery helium detection device Download PDFInfo
- Publication number
- CN219624982U CN219624982U CN202320506004.1U CN202320506004U CN219624982U CN 219624982 U CN219624982 U CN 219624982U CN 202320506004 U CN202320506004 U CN 202320506004U CN 219624982 U CN219624982 U CN 219624982U
- Authority
- CN
- China
- Prior art keywords
- helium
- pipeline
- battery
- injection
- reinspection
- 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
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 155
- 239000001307 helium Substances 0.000 title claims abstract description 154
- 229910052734 helium Inorganic materials 0.000 title claims abstract description 154
- 238000001514 detection method Methods 0.000 title claims abstract description 63
- 239000007789 gas Substances 0.000 claims abstract description 71
- 238000002347 injection Methods 0.000 claims abstract description 52
- 239000007924 injection Substances 0.000 claims abstract description 52
- 238000012360 testing method Methods 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 10
- 238000012552 review Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 10
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 7
- 238000007689 inspection Methods 0.000 description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000009194 climbing Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000013102 re-test Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- Y02E60/10—Energy storage using batteries
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model relates to a battery helium testing device, which comprises: a frame; the battery conveying unit comprises a jig, and a sealing cavity for placing a battery is formed between the jig and the rack when the jig is abutted against the rack; the gas supply unit comprises a helium detection pipeline assembly and a reinspection pipeline assembly, the helium detection pipeline assembly comprises a helium injection pipeline, the helium injection pipeline is communicated with a plurality of batteries, the reinspection pipeline assembly comprises a plurality of helium injection reinspection pipelines, and the plurality of helium injection reinspection pipelines are respectively communicated with the plurality of batteries correspondingly; valves are arranged on the helium injection pipeline and the helium injection reinspection pipeline; and the helium detection unit comprises a helium detection instrument, and the helium detection instrument is communicated with the sealed cavity. The utility model can directly carry out in-situ recheck on a plurality of batteries with unqualified air tightness detection, simplifies the recheck process and steps, greatly improves the recheck efficiency, reduces the transfer times of the batteries, and effectively reduces the risk of scratch damage of the batteries.
Description
Technical Field
The utility model relates to the technical field of manufacturing of new energy lithium batteries, in particular to a battery helium detection device.
Background
The helium detection process is a process which is necessary to be carried out after the welding of the lithium battery shell is completed, and utilizes the characteristic of helium atoms to detect the sealing performance of the shell and timely reject the battery with the sealing performance which does not reach the standard.
In the related art, in the helium test process of a lithium battery, two batteries are generally placed in a fixture for fixation and placed in a sealable cavity, the sealable cavity is communicated with a helium tester, the cavity is firstly vacuumized when helium test is started, helium is introduced into the two batteries and stands for a plurality of hours, after standing is finished, the sealable cavity is subjected to vacuum breaking treatment, gas is introduced into the helium tester for helium test operation, and if the helium tester detects that the helium is not present in the gas, the tightness of the two batteries is proved to be up to the standard; if helium is detected in the gas by the helium detector, the tightness of at least one of the two batteries of the group is proved to be not up to the standard, and the recheck is needed.
However, the above helium test apparatus cannot be applied continuously when performing the re-test, and it is necessary to take out both batteries of the group and to re-perform the helium test individually by using other helium test apparatuses to determine which battery has a problem, that is, it is necessary to take out one group of batteries and perform the helium test individually after performing the re-test. This results in a lengthy and complex flow of the entire helium test, which is inefficient; and the battery is frequently taken and put, and quality flaws are easy to occur.
Disclosure of Invention
The embodiment of the utility model provides a battery helium detection device, which aims to solve the problems that the whole helium detection process is long and complex and the efficiency is low in the related technology; and the battery is frequently taken and put, also easily appears the problem of quality flaw.
The utility model provides a battery helium detection device, which comprises:
a frame;
the battery conveying unit comprises a jig, and a sealing cavity for placing a battery is formed between the jig and the rack when the jig is abutted against the rack;
the gas supply unit comprises a helium detection pipeline assembly and a reinspection pipeline assembly, the helium detection pipeline assembly comprises a helium injection pipeline, the helium injection pipeline is communicated with a plurality of batteries, the reinspection pipeline assembly comprises a plurality of helium injection reinspection pipelines, and the plurality of helium injection reinspection pipelines are respectively communicated with the plurality of batteries correspondingly; valves are arranged on the helium injection pipeline and the helium injection reinspection pipeline;
and the helium detection unit comprises a helium detection instrument, and the helium detection instrument is communicated with the sealed cavity.
Preferably, the helium detection pipeline assembly further comprises a vacuumizing pipeline and a gas injection pipeline, wherein the vacuumizing pipeline is communicated with the sealed cavity, and the gas injection pipeline is communicated with the sealed cavity.
Preferably, valves are also arranged on the vacuumizing pipeline and the gas injection pipeline.
Preferably, the vacuumizing pipeline, the helium injection pipeline and the gas injection pipeline share the same section of gas supply pipeline, and the vacuumizing valve, the helium injection valve and the gas injection valve are sequentially arranged on the gas supply pipeline.
Preferably, the air inlet pipeline is further provided with an air inlet device connected to one end of the air inlet pipeline, and the other end of the air inlet pipeline is communicated with the air supply unit.
Preferably, the helium detector further comprises a converging pipeline, wherein one end of the converging pipeline is communicated with the helium detector, and the other end of the converging pipeline is communicated with the helium detector pipeline assembly and the reinspection pipeline assembly.
Preferably, the battery conveying unit further comprises a jacking mechanism, wherein the jacking mechanism is in transmission connection with the jig, and jacks the jig to be in contact with the rack.
Preferably, the lifting mechanism is a cylinder.
Preferably, the frame comprises a workbench, a sealing cover is arranged at the bottom of the workbench, the sealing cover is opposite to the jig, and the helium detection pipeline assembly and the reinspection pipeline assembly are communicated with the inside of the sealing cover.
Preferably, the battery helium detection device comprises three groups of battery helium detection stations, the three groups of battery helium detection stations respectively comprise the battery conveying unit and the air supply unit, and the helium detection units are respectively communicated with the three groups of battery helium detection stations.
The technical scheme provided by the utility model has the beneficial effects that:
(1) According to the battery helium detection device, two batteries are not arranged in the detection cavity, and the two batteries in the cavity can be independently and respectively subjected to helium detection, so that the batteries are not required to be taken out of the battery helium detection device, an independent re-detection cavity is not required to be added, and the batteries are directly subjected to re-detection on an original station, so that the re-detection efficiency is greatly improved;
(2) The application provides a device is examined to battery helium, and the device is provided with a plurality of stations, can detect the gas tightness of a plurality of batteries simultaneously, has improved detection efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a helium detector for a battery according to an embodiment of the present utility model.
In the figure: 101. a jig; 1011. sealing the cavity; 102, a step of; a driving member; 2. a helium gas detection unit; 301. an air intake duct; 302. a vacuum pumping pipeline; 303. helium filling pipeline; 304. an air injection pipeline; 305. a first reinspection pipeline; 306. a second reinspection pipeline; 4. and a battery.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The embodiment of the utility model provides a battery helium detection device which can solve the problems that the whole helium detection process in the related technology is long and complex and the efficiency is low; and the battery is frequently taken and put, also easily appears the problem of quality flaw.
A battery helium detection device comprises a battery conveying unit, a gas supply unit, a helium detection unit and a frame. The battery conveying unit, the air supply unit and the helium detection unit are respectively fixed on the frame.
The battery conveying unit includes a jig 101 and a jacking mechanism 102. Wherein, two batteries 4 have been placed on the tool 101, climbing mechanism 102 and tool 101 transmission are connected, and climbing mechanism 102 can be with tool 101 jacking and frame conflict, and tool 101 and frame are supported tightly this moment, are formed with the sealed cavity 1011 of placing battery 4 between tool 101 and the frame, and sealed cavity 1011 is inside to be in sealed state.
In some embodiments, the lifting mechanism 102 may be a driving mechanism such as a cylinder, a linear motor, or a screw mechanism, and in this embodiment, the lifting mechanism 102 is a cylinder.
The helium detecting unit 2 is a helium detector, and is communicated with the sealed cavity 1011, and can detect whether the gas in the sealed cavity 1011 contains helium, so as to obtain whether the air tightness of the battery 4 is perfect.
The gas supply unit includes a helium test line assembly including a gas inlet line 301, a vacuum line 302, a helium injection line 303, and a gas injection line 304.
Wherein the gas inlet pipe 301 communicates with an external gas supply device to supply a plurality of gases to the battery helium test equipment.
One end of the vacuumizing pipeline 302 is communicated with the air inlet pipeline 301, the other end of the vacuumizing pipeline 302 is communicated with the sealed cavity 1011 in the jig 101, and a vacuumizing valve is arranged on the vacuumizing pipeline 302, so that the vacuumizing pipeline 302 can be controlled to be opened and closed.
One end of the helium injection pipeline 303 is communicated with the air inlet pipeline 301, the other end of the helium injection pipeline 303 is communicated with the two batteries 4, and a helium injection valve is arranged on the helium pumping pipeline 303, so that the helium injection pipeline 303 can be controlled to be opened and closed.
One end of the gas injection pipeline 304 is communicated with the gas inlet pipeline 301, the other end of the gas injection pipeline 304 is communicated with the sealed cavity 1011 inside the jig 101, and a gas injection valve is arranged on the gas injection pipeline 304, so that the gas injection pipeline 304 can be controlled to be opened and closed.
When helium detection is carried out, firstly, an air inlet valve, a helium injection valve and a gas injection valve are closed, a vacuumizing valve is opened, a sealed cavity 1011 is vacuumized through a vacuumizing pipeline 302, and then the vacuumizing valve is closed, so that the sealed cavity 1011 is in a vacuum state to prevent interference of other gases; then the vacuumizing valve and the gas injection valve are closed, the gas inlet pipeline 301 is connected with a helium gas bottle, the gas inlet valve and the helium injection valve are opened, helium is respectively injected into the two batteries 4, then the gas inlet valve and the helium injection valve are closed, and the helium-injected batteries 4 are kept stand for a plurality of hours; after the back vacuumizing valve and the helium filling valve are closed, the air inlet pipeline 301 is connected with a nitrogen gas cylinder, the air inlet valve and the air filling valve are opened, nitrogen is filled into the sealed cavity 1011, meanwhile, the sealed cavity 1011 is communicated with the helium gas detection unit 2, and gas enters the helium gas detection unit 2 for detection. If helium is not detected in the gas, the gas tightness of the two batteries 4 in the jig 101 reaches the standard; if helium is detected in the gas, it is indicated that the tightness of the two batteries 4 is not standard, and at this time, the tightness of at least one of the two batteries 4 in the group is not standard, and a reinspection is required.
In this embodiment, the vacuumizing pipe 302, the helium injecting pipe 303 and the gas injecting pipe 304 may share the same pipe, and the vacuumizing valve, the helium injecting valve and the gas injecting valve may be sequentially arranged.
In some embodiments, the gas supply comprises a helium gas cylinder and a nitrogen gas cylinder.
The gas supply unit further comprises a re-inspection mechanism comprising a plurality of helium-filled re-inspection pipelines which are respectively communicated with the plurality of batteries 4, in the embodiment, the batteries 4 comprise two, so the re-inspection mechanism comprises a first re-inspection pipeline 305 and a second re-inspection pipeline 306, wherein one end of the first re-inspection pipeline 305 is communicated with the gas inlet pipeline 301, and the other end of the first re-inspection pipeline is communicated with one of the batteries 4; the second review duct 306 has one end in communication with the intake duct 301 and the other end in communication with the other battery 4.
When the recheck is carried out, the battery 4 is not required to be taken out of the jig 101, the vacuumizing valve, the helium injection valve and the gas injection valve are closed, meanwhile, the valve of the second recheck pipeline 306 is also closed, the gas inlet pipeline 301 is connected with the helium gas cylinder, the valve of the gas inlet pipeline 301 and the valve of the first recheck pipeline 305 are opened, helium is injected into the first battery 4, after the battery 4 filled with helium is kept stand for a plurality of hours, the vacuumizing valve, the helium injection valve, the valve of the first recheck pipeline 305 and the valve of the second recheck pipeline 306 are closed, the gas inlet pipeline 301 is connected with the nitrogen gas cylinder, the gas inlet valve and the gas injection valve are opened, nitrogen is injected into the sealed cavity 1011, meanwhile, the sealed cavity 1011 is communicated with the helium gas detection unit 2, and gas enters the helium gas detection unit 2 for detection, so that the tightness of the first battery 4 is detected; then, only the vacuumizing valve, the helium filling valve and the gas filling valve are closed, the valve of the first reinspection pipeline 305 is closed, the gas inlet pipeline 301 is connected with a helium gas cylinder, the valve of the gas inlet valve and the valve of the second reinspection pipeline 306 are opened, and the operation is repeated to detect the air tightness of the other battery 4.
In some embodiments, the gas supply unit further comprises a confluence conduit having one end in communication with the helium detector and another end in communication with the helium detector conduit assembly and the review conduit assembly.
When the battery 4 helium detection device discovers that the two batteries 4 in the jig 101 have unqualified air tightness detection, the battery 4 does not need to be taken out from the battery 4 helium detection device to carry out secondary re-detection, but the battery 4 is directly and independently detected in situ in the jig 101 again, so that the step of detecting the battery 4 helium is simplified, and the detection efficiency is improved. Meanwhile, the problem of scratch of the battery 4 in the process of taking out is avoided.
In some embodiments, the helium filling pipe 303 of the gas supply unit includes two pipes respectively connected to the two batteries 4, each time the two pipes are separately provided with valves, the two valves can be checked for first helium when being opened simultaneously, and when the gas tightness does not meet the standard, the two valves are opened and closed sequentially, so as to complete the rechecking of the helium of the batteries 4. At this time, the air supply unit cancels the setting of the first review pipeline 305 and the second review pipeline 306.
In some embodiments, the air supply unit may be directly connected to the battery 4 or the sealed cavity 1011 via a valve, without the need for a pipe.
In some embodiments, the frame includes a workbench, a sealing cover is arranged at the bottom of the workbench, the sealing cover is opposite to the jig 101, and the helium detection pipeline assembly and the rechecking pipeline assembly are communicated with the inside of the sealing cover.
In this embodiment, the battery helium detection device includes three sets of battery helium detection stations, and each set of battery helium detection station includes battery conveying unit and air supply unit, and the helium detection unit respectively with three sets of battery helium detection stations intercommunication. At this time, the battery helium test apparatus can simultaneously test the airtightness of the six batteries 4.
In some embodiments, the battery helium test apparatus may include one or more sets of battery helium test stations according to the requirements of the line.
In the description of the present utility model, it is to be understood that the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be noted that in the present utility model, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A battery helium testing device, comprising:
a frame;
the battery conveying unit comprises a jig, and a sealing cavity for placing a battery is formed between the jig and the rack when the jig is abutted against the rack;
the gas supply unit comprises a helium detection pipeline assembly and a reinspection pipeline assembly, the helium detection pipeline assembly comprises a helium injection pipeline, the helium injection pipeline is communicated with a plurality of batteries, the reinspection pipeline assembly comprises a plurality of helium injection reinspection pipelines, and the plurality of helium injection reinspection pipelines are respectively communicated with the plurality of batteries correspondingly; valves are arranged on the helium injection pipeline and the helium injection reinspection pipeline;
and the helium detection unit comprises a helium detection instrument, and the helium detection instrument is communicated with the sealed cavity.
2. The battery helium testing apparatus of claim 1, wherein the helium testing tubing assembly further comprises a vacuum line in communication with the sealed cavity and a gas injection line in communication with the sealed cavity.
3. The battery helium testing device according to claim 2, wherein valves are also arranged on the vacuumizing pipeline and the gas injection pipeline.
4. The battery helium detection apparatus according to claim 2, wherein the vacuumizing pipeline, the helium injection pipeline and the gas injection pipeline share the same section of gas supply pipeline, and the vacuumizing valve, the helium injection valve and the gas injection valve are sequentially arranged on the gas supply pipeline.
5. The battery helium testing device according to claim 1, further comprising an air intake pipe, one end of which is connected to an air supply device, and the other end of which is in communication with the air supply unit.
6. The battery helium testing device of claim 1, further comprising a confluence conduit having one end in communication with the helium testing instrument and another end in communication with the helium testing conduit assembly and the review conduit assembly.
7. The battery helium testing device of claim 1, wherein the battery conveying unit further comprises a jacking mechanism, wherein the jacking mechanism is in transmission connection with the jig and jacks the jig to abut against the rack.
8. The battery helium testing apparatus of claim 7, wherein said lifting mechanism is a cylinder.
9. The battery helium testing device according to claim 7, wherein the frame comprises a workbench, a sealing cover is arranged at the bottom of the workbench, the sealing cover is opposite to the jig, and the helium testing pipeline assembly and the rechecking pipeline assembly are communicated with the inside of the sealing cover.
10. The battery helium testing device according to claim 1, wherein the battery helium testing device comprises three groups of battery helium testing stations, the three groups of battery helium testing stations respectively comprise the battery conveying unit and the air supply unit, and the helium testing unit is respectively communicated with the three groups of battery helium testing stations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320506004.1U CN219624982U (en) | 2023-03-06 | 2023-03-06 | Battery helium detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320506004.1U CN219624982U (en) | 2023-03-06 | 2023-03-06 | Battery helium detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219624982U true CN219624982U (en) | 2023-09-01 |
Family
ID=87795218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320506004.1U Active CN219624982U (en) | 2023-03-06 | 2023-03-06 | Battery helium detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219624982U (en) |
-
2023
- 2023-03-06 CN CN202320506004.1U patent/CN219624982U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110082201B (en) | Material delayed fracture test method under high-pressure hydrogen-doped natural gas environment | |
| CN110160714B (en) | Soft package battery airtightness inspection system and method | |
| CN208333779U (en) | A kind of leakage detection apparatus of non-cavity body structure part | |
| CN111811809B (en) | Quality control method for valve seat assembly | |
| WO2024007732A1 (en) | Double-vacuum four-cavity air tightness testing method and tester for square shell battery | |
| CN110927039A (en) | Device for detecting leakage performance of material in high-low temperature cycle mode and detection method thereof | |
| CN106353462B (en) | Battery cell gas production detection device and detection method | |
| CN110849552A (en) | Membrane electrode assembly air tightness detection method and air tightness detection device | |
| CN115445955A (en) | Automatic helium detection equipment | |
| CN219624982U (en) | Battery helium detection device | |
| CN219244910U (en) | Vacuum cabin assembly | |
| CN112763152A (en) | Air leakage detection method of inflatable product | |
| CN206019949U (en) | Fast accurate tubing leakage point detector | |
| CN210664881U (en) | Air tightness testing device | |
| CN110000113B (en) | Heat exchanger helium detection equipment | |
| CN111610012A (en) | Irradiation monitoring tube test device and use method | |
| CN210269081U (en) | Air tightness detection device | |
| CN216309358U (en) | Lead accumulator gas tightness check out test set | |
| CN208674307U (en) | A kind of full automatic car power battery leakage detection equipment | |
| CN115389126A (en) | Modularized contrast type automatic detection method and equipment for gas meter sealing performance | |
| CN109148984A (en) | A kind of full automatic car power battery leakage detection equipment | |
| CN111912583A (en) | Leakage detection device for membrane electrode of galvanic pile | |
| CN206847871U (en) | A kind of device for the leak detection of high-pressure oil pipe high pressure | |
| CN114112222A (en) | Air tightness detection equipment and process thereof | |
| CN112229581A (en) | Filter assembly test bench |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |