CN201651665U - Protective device for high-pressure resistant corrugated pipe - Google Patents
Protective device for high-pressure resistant corrugated pipe Download PDFInfo
- Publication number
- CN201651665U CN201651665U CN2010201123538U CN201020112353U CN201651665U CN 201651665 U CN201651665 U CN 201651665U CN 2010201123538 U CN2010201123538 U CN 2010201123538U CN 201020112353 U CN201020112353 U CN 201020112353U CN 201651665 U CN201651665 U CN 201651665U
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- Prior art keywords
- corrugated pipe
- bellows
- pipe
- diameter
- pilot hole
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Abstract
The utility model discloses a protective device for a high-pressure resistant corrugated pipe, comprising a corrugated pipe, a top plate and a soleplate connected with the corrugated pipe, wherein the corrugated pipe is internally provided with a guide pipe, which is arranged in a guide hole of the soleplate; the upper end of a rigid taper valve needle is connected with the top plate and the lower end is connected with the guide pipe; the medium in the corrugated pipe is inserted in the guide hole of the guide pipe and communicated with a subsequent system. The diameter of the end of the taper valve needle is less than that of the guide hole and the diameter of the root of the taper valve needle is greater than that of the guide hole. The utility model has the following advantages: by adopting the principle of the taper sealing valve, the taper sealing valve is designed inside the corrugated and integrated with the corrugated pipe; when no sealing is needed by the corrugated pipe in the normal work range, the corrugated pipe is not influence. When the leakage occurs and the corrugated pipe needs to be sealed, the corrugated pipe is compressed to the allowed compression height, the taper valve needle is bound with the guide hole to form a stop valve, which prevents the corrugated pipe from being flattened and damaged.
Description
Technical field
The utility model belongs to the pressure measurement sensor technical field, is specifically related to a kind of protective gear of high pressure resistant bellows.
Background technique
The bellows that is used for propagation of pressure and media isolated, be actually a pressure transducer, be full of pressure transmission medium between bellows interior and connected its follow-up instrument, the mode of transmitting pressure is the next stage instrument that transfers the pressure to it by the medium of bellows interior.Normal working state is that bellows works in the environment of high pressure (20MPa), but the operating range of bellows is very little by (0～300kPa), bellows is exactly under high hydrostatic pressure condition, transmit a little differential pressure, be that bellows integral body is to bear a high pressure, and be a little differential pressure between the inside and outside wall of bellows, consider the precision of propagation of pressure, the rigidity of requirement bellows is little, and (＜10N/mm=, diaphragm will approach (about 0.3mm).But because the inner chamber of bellows is connected with follow-up instrument system by pipeline (being generally capillary tube), in connecting passage, all be full of medium, but in case any old place breaks (even a micropore), all will cause the leakage of medium, and under the effect of high pressure, dielectric leakage is more and more serious, and its consequence is to cause this connecting passage " decompression ", and bellows will be flattened by working pressure.Therefore, after leak at certain position in this loop, not only influence the transmission of pressure, and can cause the damage of bellows.In order to make when system's generation is leaked, do not cause the damage of bellows, must take protective measure in the inside of bellows.
The model utility content
The purpose of this utility model is: a kind of protective gear of high pressure resistant bellows is provided, and when making bellows take place to leak in system, the unlikely damage that causes bellows.
For achieving the above object; the technological scheme of taking is: a kind of protective gear of high pressure resistant bellows; comprise bellows; and the top board and the base plate that are connected with described bellows; it is characterized in that: described bellows is built-in with guide pipe; described guide pipe places the pilot hole on the described base plate, and rigidity tapered needle valve upper end is connected with described top board, the lower end is connected with described guide pipe, and the medium in the bellows communicates with follow-up system by the pilot hole that inserts guide pipe.
Described tapered needle valve end diameter is less than the pilot hole diameter, and described tapered needle valve root diameter (RD) is greater than the pilot hole diameter.
Good effect of the present utility model is: the principle that adopts the cone seal valve, with the inside of cone seal valve design at bellows, become as a whole with bellows, the rigidity tapered needle valve separates with valve body (pilot hole), in the time in the bellows normal range of operation, need not sealing, valve body and needle are separate irrelevant, adhere to respectively on the top board and base plate with bellows, and bellows is not produced any influence.When take place to leak needing sealing, bellows can be compressed, and is compressed to when allowing compression height, and tapered needle valve is just fitted with pilot hole, forms a stop valve, protects bellows not damage because of being crushed.
Description of drawings
Fig. 1 is the utility model structural representation.
Among the figure, the 1-pilot hole; The 2-guide pipe; The 3-tapered needle valve; The 4-top board; The 5-bellows; The 6-base plate.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The utility model structure as shown in Figure 1; a kind of protective gear of high pressure resistant bellows; comprise bellows 5; and the top board 4 and the base plate 6 that are connected with described bellows 5; it is characterized in that: described bellows 5 is built-in with guide pipe 2; described guide pipe 2 places the pilot hole 1 on the described base plate 6, and rigidity tapered needle valve 3 upper ends are connected with described top board 4, the lower end is connected with described guide pipe 2, and the medium in the described bellows 5 communicates with follow-up system by the pilot hole 1 of built-in guiding pipe 2.
Described tapered needle valve 3 end diameter are less than pilot hole 1 diameter, and described tapered needle valve 3 root diameter (RD)s are greater than pilot hole 1 diameter.
During proper functioning, the variation that bellows is under pressure causes the compression or the stretching of bellows 5, and its inner medium flowed to system by pilot hole 1 when bellows 5 was compressed.On the bellows top board, connect the part of guide pipe, the cone of 1 rigidity of additional design is called tapered needle valve 3, and establishing the pilot hole diameter is φ 1, the diameter＜φ 1 of this tapered needle valve end, the diameter＞φ 1 of root.The position height of tapered needle valve depends on the compressed height of permission bellows, the so-called compression height that allows, exactly when bellows is compressed to this height, bellows interior still keeps enough media, in order to bear the work static pressure, so the position height of tapered needle valve is as long as calculate when this cone and enter pilot hole, and be φ 1 place when contacting with pilot hole at diameter of section, the height of bellows gets final product in the altitude range of permission.
When follow-up system leaks, bellows 5 can be compressed, when bellows 5 is compressed to the permission compression height, tapered needle valve 3 is just fitted with pilot hole 1, form sealing, promptly tapered needle valve 3 is fitted naturally with pilot hole 1 end face and is formed a stop valve, and the medium of bellows 5 inside will no longer flow out this moment, and bellows 5 just only is in the effect of static pressure, does not also cause damage with regard to not being crushed.
Claims (2)
1. the protective gear of a high pressure resistant bellows; comprise bellows (5); and top board (4) that is connected with described bellows (5) and base plate (6); it is characterized in that: described bellows (5) is built-in with guide pipe (2); described guide pipe (2) places the pilot hole (1) on the described base plate (6); rigidity tapered needle valve (3) upper end is connected with described top board (4), the lower end is connected with described guide pipe (2), and the medium in the bellows (5) communicates with follow-up system by the pilot hole (1) of built-in guiding pipe (2).
2. according to the protective gear of the described a kind of high pressure resistant bellows of claim 1, it is characterized in that: described tapered needle valve (3) end diameter is less than pilot hole (1) diameter, and described tapered needle valve (3) root diameter (RD) is greater than pilot hole (1) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201123538U CN201651665U (en) | 2010-02-10 | 2010-02-10 | Protective device for high-pressure resistant corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201123538U CN201651665U (en) | 2010-02-10 | 2010-02-10 | Protective device for high-pressure resistant corrugated pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201651665U true CN201651665U (en) | 2010-11-24 |
Family
ID=43116905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201123538U Expired - Fee Related CN201651665U (en) | 2010-02-10 | 2010-02-10 | Protective device for high-pressure resistant corrugated pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201651665U (en) |
-
2010
- 2010-02-10 CN CN2010201123538U patent/CN201651665U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI AUTOMATION INSTRUMENTATION CO., LTD. Free format text: FORMER OWNER: SHANGHAI AUTOMATIC INDUSTRUMENT AND METER CO LTD Effective date: 20150611 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150611 Address after: Zhabei District Shanghai City 200072 West Guangzhong Road No. 191 Building No. 7 Patentee after: Shanghai instrument and meter for automation company limited Address before: 200233, No. 41 Rainbow Road, Shanghai, Xuhui District Patentee before: Shanghai Automatic Industrument and Meter Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20190210 |