CN205209708U - Valve block gas tightness detection device - Google Patents
Valve block gas tightness detection device Download PDFInfo
- Publication number
- CN205209708U CN205209708U CN201520956786.4U CN201520956786U CN205209708U CN 205209708 U CN205209708 U CN 205209708U CN 201520956786 U CN201520956786 U CN 201520956786U CN 205209708 U CN205209708 U CN 205209708U
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- China
- Prior art keywords
- valve block
- tightness detection
- air
- gas tightness
- frock
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- 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.)
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Abstract
The utility model discloses a valve block gas tightness detection device, including mounting panel, clamp plate, holding screw, gas tightness detection frock, sealing strip and locating pin, the mounting panel on tightly have the valve block surely through clamp plate and holding screw, the locating pin that detects in the frock of gas tightness aim at the locating hole on the valve block, the gas tightness detect and to be equipped with the inlet port in the frock, the gas tightness detect the frock and seal through the press, the inlet port connect gaseous mass flow meter or float flowmeter. The utility model provides a complicated unable sealed problem of O type circle of using of valve block sealing line makes the spillage easily test. Sealed face be the boss form, exceeds one section distance than the periphery, and it is long -pending that this design can reduce the finish machining every detail, make sealed less, therefore also corresponding reducing of the power that need compress tightly. Use screw, clamp plate to compress tightly the valve block, simple structure plays the guard action to the valve block.
Description
Technical field
The utility model relates to rolling stock and automatically overhauls field, particularly a kind of valve block air-tightness detection device.
Background technology
The impermeability of rail vehicle air feed system compressor valve plate can affect the volumetric efficiency of compressor, if leakage rate affects the volumetric efficiency of compressor compared with conference.Being assembled on the compressor after current purchase valve block, the volumetric efficiency of test compression machine, if defective, may be cause by the impermeability of valve block is bad, so need to test its impermeability.And valve block belongs to flat seal device, interface is different from common tubing or planar sealed valve class, and potted line out-of-shape, causes difficulty to air tightness test.
Summary of the invention
For problems of the prior art, the problem that valve block potted line complexity cannot use O type circle to seal when the utility model provides the assembling of a kind of rail vehicle air feed system compressor valve plate, can be solved, make leakage rate be easy to the valve block air-tightness detection device tested.
The purpose of this utility model is achieved through the following technical solutions.
A kind of valve block air-tightness detection device, comprise installing plate, pressing plate, holding screw, air-tightness detection tool, sealing strip and register pin, described installing plate there is valve block by pressing plate and holding screw tightening, the pilot hole on valve block aimed at by register pin on described air-tightness detection tool, described air-tightness detection tool is provided with air admission hole, described air-tightness detection tool is sealed by press, and described air admission hole connects mass-flow gas meter or suspended body flowmeter.
Described air-tightness detection tool is provided with seal groove, is provided with O type circle in described seal groove, and the diameter of described O type circle is d, described depth of sealing groove H, described sealing groove width W=d, described O type circle decrement h=d-H, 15%d≤h≤20%d.
Compared to prior art, the utility model has the advantage of: the utility model solves the problem that valve block potted line complexity cannot use O type circle to seal, make leakage rate be easy to test.Sealing surface is plateau form, and comparatively periphery exceeds a segment distance, and this design can reduce polished surface area, makes sealing surface less, thus needs the power also corresponding reduction compressed.Use screw, pressing plate to compress valve block, structure is simple, plays a protective role to valve block.
The utility model adopts register pin location, then seals by press compression, and be compared to use bolt and nut and tighten more quick simple, snap-in force is controlled, reliably more convenient.
Accompanying drawing explanation
Fig. 1 is air-tightness detection tool structural representation of the present utility model.
Fig. 2 is installing plate structural scheme of mechanism of the present utility model.
Fig. 3 is the utility model sealed structural representation.
In figure: 1, air-tightness detection tool 2, sealing strip 3, register pin 4, air admission hole 5, installing plate 6, valve block 7, pressing plate 8, holding screw.
Embodiment
Below in conjunction with Figure of description and specific embodiment, the utility model is described in detail.
As Fig. 1, shown in 2, a kind of valve block air-tightness detection device, comprise installing plate 5, pressing plate 7, holding screw 8, air-tightness detection tool 1, sealing strip 2 and register pin 3, described installing plate 5 there is valve block 6 by pressing plate 7 and holding screw 8 tightening, the pilot hole on valve block 6 aimed at by register pin on described air-tightness detection tool 1, described air-tightness detection tool 1 is provided with air admission hole 4, use press to compress air-tightness detection tool 1 back side to seal, air admission hole 4 connects mass-flow gas meter or suspended body flowmeter, pressurized air is led to from air admission hole 4, the leakage rate of valve block 6 can be measured.
This measuring equipment measures for the impermeability of valve block on piston type air compressor 6, and measurement result is its leakage rate.
As shown in Figure 3, described air-tightness detection tool 1 is provided with seal groove, is provided with O type circle in described seal groove, the diameter of described O type circle is d, described depth of sealing groove H, described sealing groove width W=d, described O type circle decrement h=d-H, 15%d≤h≤20%d.
The utility model adopts sealing strip 2 to carry out flat seal.The sealing strip 2 selecting suitable diameter, material is needed according to sealing, consider the radius of turn of sealing strip 2, according to valve block 6 shape, sealing strip 2 character appropriate design potted line, ratio of compression is calculated according to test pressure and sealing strip 2 mechanical property, thus groove depth reasonable in design and shape, enable potted line have good location with valve block 6 by register pin 3 again, solve the sealing problem of air tightness test.
Claims (2)
1. a valve block air-tightness detection device, comprise installing plate, pressing plate, holding screw, air-tightness detection tool, sealing strip and register pin, it is characterized in that described installing plate has valve block by pressing plate and holding screw tightening, the pilot hole on valve block aimed at by register pin on described air-tightness detection tool, described air-tightness detection tool is provided with air admission hole, described air-tightness detection tool is sealed by press, and described air admission hole connects mass-flow gas meter or suspended body flowmeter.
2. a kind of valve block air-tightness detection device according to claim 1, it is characterized in that described air-tightness detection tool is provided with seal groove, O type circle is provided with in described seal groove, the diameter of described O type circle is d, described depth of sealing groove H, described sealing groove width W=d, described O type circle decrement h=d-H, 15%d≤h≤20%d.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520956786.4U CN205209708U (en) | 2015-11-26 | 2015-11-26 | Valve block gas tightness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520956786.4U CN205209708U (en) | 2015-11-26 | 2015-11-26 | Valve block gas tightness detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205209708U true CN205209708U (en) | 2016-05-04 |
Family
ID=55847417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520956786.4U Active CN205209708U (en) | 2015-11-26 | 2015-11-26 | Valve block gas tightness detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205209708U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261048A (en) * | 2019-03-20 | 2019-09-20 | 上海明氏自动化技术有限公司 | A kind of valve body detection machine |
-
2015
- 2015-11-26 CN CN201520956786.4U patent/CN205209708U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261048A (en) * | 2019-03-20 | 2019-09-20 | 上海明氏自动化技术有限公司 | A kind of valve body detection machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 211800 Nanjing City, Pukou Province Economic Development Zone, Jiangsu Road, No. 10 Patentee after: Nanjing Zhongche town Haitai Brake Equipment Co Ltd Address before: 211800 Nanjing City, Pukou Province Economic Development Zone, Jiangsu Road, No. 10 Patentee before: Nanjing Puzhen Haitai Brake Equipment Co., Ltd. |