CN203894000U - Vacuum box for helium leak testing - Google Patents
Vacuum box for helium leak testing Download PDFInfo
- Publication number
- CN203894000U CN203894000U CN201420253389.6U CN201420253389U CN203894000U CN 203894000 U CN203894000 U CN 203894000U CN 201420253389 U CN201420253389 U CN 201420253389U CN 203894000 U CN203894000 U CN 203894000U
- Authority
- CN
- China
- Prior art keywords
- vacuum box
- helium
- vacuum chamber
- box body
- pull bar
- 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.)
- Expired - Lifetime
Links
- 239000001307 helium Substances 0.000 title claims abstract description 40
- 229910052734 helium Inorganic materials 0.000 title claims abstract description 40
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000007689 inspection Methods 0.000 claims description 14
- 150000002371 helium Chemical class 0.000 claims description 3
- 238000005491 wire drawing Methods 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model relates to helium leak detection equipment, especially a vacuum box for helium leak testing. The vacuum box comprises a vacuum box body with a helium air inlet, and hold-down mechanisms, a sensor automatic plugging mechanism and a pipe joint automatic plugging mechanism which are connected with the vacuum box body. The characteristics of the vacuum box are that: an oil injector seat cylinder arranged outside the vacuum box body is connected with an end of a pull bar, and the other end of the pull bar extends into the vacuum box body and is provided with a tensioning screw and a block; and the portion of the pull bar between the tensioning screw and the block is provided with an O-shaped column plug. The vacuum box resolves technical problems that: unreliable seal and wiredrawing in the oil injector seat are easy to generate because a conventional sharing box body for helium leak testing seals the oil injector seat through compressing an O type ring, which affects product performance. The vacuum box has high sealing property, resolves an internal wiredrawing problem, omits operation of screwing a plug by a person, and saves time.
Description
Technical field
The utility model relates to helium detection of leaks equipment, particularly a kind of helium inspection vacuum tank.
Background technology
Along with the development of China's economic, the improving constantly of the China Automobile Industry parts localization rate of parts and components, production capacity rises day by day, so production quality and security requirement are also being improved constantly.Fuel dispensing tube is a part for Engine Parts, and air tightness test is to guarantee safe important step.From the situation analysis of current actual motion, the seal form of helium inspection vacuum tank plug, the abrasion condition of plug and helium detect reliability and the production capacity of the product of the automaticity impact in examination, and therefore, research and development Novel vacuum box and selection reliability material are problems being imminent.
The basic leak-hunting principle of helium leak test as following the trail of gas, is filled with workpiece by helium with helium in vacuum tank, then by Helium leak detector energy high precision, the rapid leak case that judges accurately workpiece.Operator can directly be placed on workpiece in vacuum tank, workpiece interface is aimed at the shutoff plug in vacuum tank, after vacuum chamber door is closed, system control cylinder compresses and carries out shutoff, can full automaticly complete find time, casing background detects, fill helium, leak detection, the whole process of recovery.
Current helium is examined and is shared casing, and the pressured tight O type circle of sealing oil injector seat is realized, and easily produces and seals the unreliable and inner wire drawing of oil injector seat, affects properties of product.Come sealed fitting and sensor connector with manually twisting plug, affect beat.In addition, old-fashioned helium inspection shares vacuum chamber, changes the mode of inner clamping tool and carrys out sealed pipe fittings.Different because of pipe fitting form, this method can only seal up oil injector seat, and easily causes pipe fitting inner wall wire drawing.
In addition, the helium of the current shared casing of helium inspection can enter fuel dispensing tube by oil injector seat, pipe adapter or sensor connector.But, during through pipe adapter or sensor connector air inlet, because being filled with helium pressure high (being up to 26Mpa), can there is the compacted contraction of plug air admission hole, helium can not enter fuel dispensing tube.In this case, equipment under report eligible state, causes detecting the leakage situation of fuel dispensing tube always, can allow leaker flow to client, produces tremendous influence.
Summary of the invention
The purpose of this utility model is to provide a kind of helium inspection vacuum tank, it mainly solves existing helium inspection and shares casing, the pressured tight O type circle of sealing oil injector seat is realized, easily produce and seal the unreliable and inner wire drawing of oil injector seat, affect the technical matterss such as properties of product, it is high that it has sealing property, solved inner wire drawing problem, save the artificial plug operation of twisting, the advantage such as save time.
For solving the problems of the technologies described above, the utility model is achieved in that
A kind of helium inspection vacuum tank, it comprises the vacuum chamber with helium air intake opening, and is connected to hold-down mechanism, sensor automatic plugging mechanism, pipe adapter automatic plugging mechanism on vacuum chamber; It is characterized in that: be arranged on one end of the oil injector seat cylinder cylinder lever connecting rod outside vacuum chamber, this pull bar other end extends in vacuum chamber and has stretching screw and fixture block, and the pull bar between this stretching screw and fixture block is provided with O type post plug.
Described helium inspection vacuum tank, is characterized in that: on this vacuum chamber, be also provided with qualified marking mechanism.
Described helium inspection vacuum tank, is characterized in that: this helium air intake opening is arranged on the position of vacuum chamber upper connecting rod and stretching screw.
The utility model is compared with existing conventional art, and tool has the following advantages:
1, oil injector seat of the present utility model adopts cylinder to drive pull bar to make O type post plug expand to seal, and sealing property is high, has solved inner wire drawing problem simultaneously.
2, the utility model arranges the function of automatic plugging pipe adapter and sensor connector on vacuum chamber simultaneously, saves the artificial plug operation of twisting, and saves time.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of rod-pulling type oil injector seat sealing mechanism in the utility model.
Embodiment
Refer to Fig. 1,2, the utility model discloses a kind of helium inspection vacuum tank.As shown in the figure: it comprises the vacuum chamber 1 with helium air intake opening 5, and be connected to hold-down mechanism 2, sensor automatic plugging mechanism 3, the pipe adapter automatic plugging mechanism 4 on vacuum chamber 1; Be arranged on one end of oil injector seat cylinder 6 cylinder lever connecting rods 8 outside vacuum chamber 1, these pull bar 8 other ends extend in vacuum chamber 1 and have stretching screw 11 and fixture block 9, and the pull bar 8 between this stretching screw 11 and fixture block 9 is provided with O type post plug 10.
When the utility model uses, concrete operations flow process is as follows:
First drive hold-down mechanism 2 workpiece pressings by cylinder, then sensor automatic plugging mechanism 3, pipe adapter automatic plugging mechanism 4 shutoff sensor and pipe adapter under cylinder drives, final fuel injection device seat cylinder 6 drives pull bar 8 to strain backward, and the stretching screw 11 and the fixture block 9 that make to be connected with pull bar 8 push O type post plug 10 and seal oil injector seat inside.After shutoff completes, vacuum chamber 1 top door-plate cuts out, and vacuumizes, and makes vacuum chamber 1 inside in vacuum state.Be filled with again the helium of required amount from helium air intake opening 5, simultaneously leak locator work.If pipe fitting leaks, report to the police and quit work; On the contrary, within a certain period of time, leak locator numerical value is less than alarm set point, and it is qualified to show, stops being filled with helium, and reclaims helium in pipe fitting, opens the door to and prepares to detect next time.
As a kind of preferred structure, on this vacuum chamber 1, be also provided with qualified marking mechanism 7, to stamp mark of conformity showing after qualified.
As a kind of preferred structure, this helium air intake opening 5 is arranged on the position of vacuum chamber 1 upper connecting rod 8 and stretching screw 11, and namely from from oil injector seat air inlet, the risk of having avoided leaker can not test, has optimized the performance of vacuum tank.
Be only preferred embodiment of the present utility model in sum, be not used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modify, all should be technology category of the present utility model.
Claims (3)
1. a helium inspection vacuum tank, it comprises the vacuum chamber (1) with helium air intake opening (5), and is connected to hold-down mechanism (2), sensor automatic plugging mechanism (3), pipe adapter automatic plugging mechanism (4) on vacuum chamber (1); It is characterized in that: the one end that is arranged on outer oil injector seat cylinder (6) cylinder lever connecting rod (8) of vacuum chamber (1), this pull bar (8) other end extends in vacuum chamber (1) and has stretching screw (11) and fixture block (9), and the pull bar (8) between this stretching screw (11) and fixture block (9) is provided with O type post plug (10).
2. helium inspection vacuum tank according to claim 1, is characterized in that: on this vacuum chamber (1), be also provided with qualified marking mechanism (7).
3. helium inspection vacuum tank according to claim 1 and 2, is characterized in that: this helium air intake opening (5) is arranged on the position of vacuum chamber (1) upper connecting rod (8) and stretching screw (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420253389.6U CN203894000U (en) | 2014-05-19 | 2014-05-19 | Vacuum box for helium leak testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420253389.6U CN203894000U (en) | 2014-05-19 | 2014-05-19 | Vacuum box for helium leak testing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203894000U true CN203894000U (en) | 2014-10-22 |
Family
ID=51720391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420253389.6U Expired - Lifetime CN203894000U (en) | 2014-05-19 | 2014-05-19 | Vacuum box for helium leak testing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203894000U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207902A (en) * | 2019-06-29 | 2019-09-06 | 安徽皖仪科技股份有限公司 | A kind of oil heater cooling fin helium inspection tooling |
| CN114858359A (en) * | 2022-07-06 | 2022-08-05 | 南京宇众自动化装备有限公司 | Vacuum helium testing method and helium testing machine thereof |
-
2014
- 2014-05-19 CN CN201420253389.6U patent/CN203894000U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207902A (en) * | 2019-06-29 | 2019-09-06 | 安徽皖仪科技股份有限公司 | A kind of oil heater cooling fin helium inspection tooling |
| CN114858359A (en) * | 2022-07-06 | 2022-08-05 | 南京宇众自动化装备有限公司 | Vacuum helium testing method and helium testing machine thereof |
| CN114858359B (en) * | 2022-07-06 | 2022-11-08 | 南京宇众自动化装备有限公司 | Vacuum helium testing method and helium testing machine thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 201112 No. 96, Jiangchao Road, Minhang District, Shanghai Patentee after: Saiwo Zhizao (Shanghai) Technology Co.,Ltd. Address before: No.20196 minchao Road, Pujiang Town, Shanghai Patentee before: SHANGHAI WINKELMANN LONGCHUAN (SWL) MOTORCOMPONENTS Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141022 |