CN203671012U - Self-sealing valve preventing sealing part from losing elasticity - Google Patents
Self-sealing valve preventing sealing part from losing elasticity Download PDFInfo
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- CN203671012U CN203671012U CN201320787254.3U CN201320787254U CN203671012U CN 203671012 U CN203671012 U CN 203671012U CN 201320787254 U CN201320787254 U CN 201320787254U CN 203671012 U CN203671012 U CN 203671012U
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- Prior art keywords
- self
- sealing
- styled
- valve
- spool
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- 238000007789 sealing Methods 0.000 title claims abstract description 184
- 238000005987 sulfurization reaction Methods 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 229910018503 SF6 Inorganic materials 0.000 abstract description 10
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 abstract description 10
- 229960000909 sulfur hexafluoride Drugs 0.000 abstract description 10
- 230000032683 aging Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 230000001681 protective effect Effects 0.000 abstract 5
- 239000007789 gas Substances 0.000 description 9
- 230000002431 foraging effect Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a self-sealing valve preventing a sealing part from losing elasticity. The self-sealing valve preventing the sealing part from losing elasticity comprises a self-sealing valve seat, a valve element fixing part, a self-sealing valve element which is located inside an inner cavity of the self-sealing valve seat and can move axially, a self-sealing spring located between the valve element fixing part and the self-sealing valve element and a sealing protective part connected with the rear end of the self-sealing valve seat, wherein the self-sealing valve can automatically enable sealing gas of the self-sealing valve element to leak when not externally connected with the sealing protective part, and it is ensured that the self-sealing valve is reliably sealed. In the operation process, after the self-sealing valve is connected with the sealing protective part and installed in place, the sealing protective part enables the self-sealing valve element to move forwards, a self-sealing sealing part of the self-sealing valve element does not make contact with a sealing surface of the self-sealing valve seat, it is ensured that the self-sealing sealing part is in a free state and is not subjected to the pressure of the self-sealing spring, good elasticity of the self-sealing sealing part is guaranteed, and the self-sealing sealing part is not prone to aging. Meanwhile, in the operation process, the sealing protective part guarantees that the self-sealing valve is sealed and sulfur hexafluoride electric equipment is sealed, and the self-sealing valve preventing the sealing part from losing elasticity has the function of preventing the sealing part from losing elasticity and the function of preventing aging.
Description
Technical field
The utility model relates to the element that sulfur hexafluoride electrical equipment is inflated, and more specifically refers to a kind of Self-sealing valve.
Background technique
On sulfur hexafluoride electrical equipment, there is an inflation or test the Self-sealing valve that micro-water is used.As shown in Figure 1, the self-styled Sealing 220 on the self-styled spool 22 of this Self-sealing valve is long-term under the pressure of self-styled spring 23, and self-styled Sealing 220 contacts with the sealing surface A of self-styled valve seat 2 for a long time, is subject to for a long time the pressure of self-styled spring 23.Because ensure the sealability of self-styled Sealing, need to give compressibility of self-styled Sealing (rubber seal), just need the spring of certain elastic force.The spring of excessive elastic force, will produce excessive compressibility, further, on the one hand, may cause self-styled Sealing 220 that compression set occurs in the time of operation; On the other hand, because have under the pressure of spring, just must make self-styled Sealing (rubber seal) produce equivalent Von Mises stress, time one is long, thereby cause the inefficacy of self-styled Sealing (rubber seal) material, greatly lower its working life, and cause gas leakage.So the current Self-sealing valve time one is long, the self-styled Sealing 220 on it is under the pressure of self-styled spring 23, and self-styled Sealing 220 is very easy to follow the string, and easily distortion, easily aging.
Summary of the invention
The purpose of this utility model is to solve the above-mentioned defect of prior art, a kind of Self-sealing valve that prevents that Sealing from following the string is provided, ensure in the time of operation, Self-sealing valve is in the time connecting shutoff guard member, self-styled Sealing is in free state, be not subject to the pressure of self-styled spring, ensure that self-styled Sealing has good elasticity, is also difficult for aging; Ensure Self-sealing valve reliable sealing in the time of operation, ensure can not leak gas.
To achieve these goals, a kind of Self-sealing valve that prevents that Sealing from following the string of the utility model, comprise self-styled valve seat, spool fixed block, the inner chamber of described self-styled valve seat and can axially movable self-styled spool, self-styled Sealing, self-styled spring between spool fixed block and self-styled spool, it also comprises the shutoff guard member of the rearward end that is connected to self-styled valve seat; This shutoff guard member comprises that one is positioned at valve seat and is contained in one of spool rear end plug, and is enclosed within the capping on valve seat, and spool end when described plug effective length is greater than Self-sealing valve working state is to the distance of valve seat ear end face.
Described prevent the Self-sealing valve that Sealing follows the string, the rear portion of described self-styled spool is provided with self-styled Sealing, and this self-styled Sealing is rubber ring, rubber pad or the rubber parts of sulfuration on self-styled spool.
Described prevent the Self-sealing valve that Sealing follows the string, between described shutoff guard member and described self-styled valve seat, be provided with one group of shutoff Sealing, this group shutoff Sealing is rubber ring, rubber pad or O shape circle.
Described a kind of Self-sealing valve that prevents that Sealing from following the string, described spool fixed block is that Self-sealing valve seat is positioned at inner chamber relevant position and the integrated spacer ring of self-styled valve seat.
Described a kind of Self-sealing valve that prevents that Sealing from following the string, self-styled spool is provided with the position-limit mechanism of the decrement of controlling self-styled Sealing, and this position-limit mechanism is the limited ring groove that is positioned at self-styled Sealing periphery.
The Self-sealing valve that prevents that Sealing from following the string of the present utility model has following innovative point:
Self-sealing valve of the present utility model, the shutoff guard member that contains particular design, shutoff guard member one is to ensure Self-sealing valve reliable sealing in the time of operation, ensures can not leak gas; The 2nd, ensure that Self-sealing valve is in the time of operation; shutoff guard member makes self-styled spool move forward a displacement; can make the self-styled Sealing of self-styled spool and the sealing surface of self-styled valve seat not contact; guarantee that self-styled Sealing is in free state; be not subject to the pressure of self-styled spring; ensure that self-styled Sealing has good elasticity, is also difficult for aging.There is the function that prevents that Sealing from following the string, have and prevent aging function.And Self-sealing valve is the product that consumption is very large, if its life-span can be doubled, that is by making very large contribution for society, for innovation has highly significant been done in social saving.
In sum, the novelty of Self-sealing valve of the present utility model is obvious, thereby the key component-Self-sealing valve that can ensure sulfur hexafluoride electrical equipment has better sealability, longer working life, ensure that sulfur hexafluoride electrical equipment can not leak gas because Self-sealing valve loses efficacy.
Brief description of the drawings
Fig. 1 is the structural representation of the Self-sealing valve used of a kind of sulfur hexafluoride electrical equipment of prior art in the time of normal working;
Fig. 2 is the embodiment's 1 of the present utility model Self-sealing valve structural representation in the time of normal working;
Fig. 3 is the embodiment's 1 of the present utility model Self-sealing valve structural representation when until inflation (or micro-water test);
Fig. 4 is the embodiment's 2 of the present utility model Self-sealing valve structural representation in the time of normal working;
Fig. 5 is the embodiment's 3 of the present utility model Self-sealing valve structural representation in the time of normal working.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
As shown in Figures 2 and 3, a kind of Self-sealing valve 2 that prevents that Sealing from following the string of the present utility model, comprise self-styled valve seat 21, be located in the inner chamber of self-styled valve seat 21 and external rear face be provided with flange self-styled spool 22, be threaded in the inner chamber front portion of self-styled valve seat 21 spool fixed block 24, be sleeved on the self-styled spring 23 on the outer surface of self-styled spool 22 and between spool fixed block 24 and flange and be connected to the shutoff guard member 3 of the rearward end of self-styled valve seat;
The flange ear end face of self-styled spool 22 is provided with self-styled Sealing 220, and this self-styled Sealing 220 is rubber ring, rubber pad or the rubber parts of sulfuration on self-styled spool 22;
Shutoff guard member 3 is arranged on the rearward end of self-styled valve seat 21; Shutoff guard member 3 comprises block head 32 and capping 33, is provided with some shutoff Sealings 31 between block head 32 and self-styled valve seat 21, and these shutoff Sealings 31 are rubber ring, rubber pad or 0 shape circle.
Described plug effective length B, is shown in Fig. 2, and the spool end while being greater than Self-sealing valve working state, to the distance C of valve seat ear end face, is shown in Fig. 3.In the time of operation; Self-sealing valve is in the time connecting shutoff guard member 3; after being in place; shutoff guard member 3 makes self-styled spool 22 move forward a displacement L1; can make the self-styled Sealing 220 of self-styled spool 22 and the sealing surface A of self-styled valve seat 21 not contact; guarantee that self-styled Sealing 220 is in free state; be not subject to the pressure of self-styled spring 23; ensure that self-styled Sealing 220 has good elasticity; also be difficult for aging; while operation, shutoff guard member 3 is guaranteed the sealing of Self-sealing valve simultaneously, and can guarantee sulfur hexafluoride electrical equipment sealing.There is the function that prevents that Sealing from following the string, have and prevent aging function.
And Self-sealing valve is in the time unloading the process of shutoff guard member 3, this Self-sealing valve can first make self-styled spool 22 shutoff gases leak from Self-sealing valve automatically, ensures that Self-sealing valve is reliable sealing, and whole process can not be leaked gas.
In the second embodiment (as shown in Figure 4), the present embodiment is to have simplified the first Self-sealing valve of the present utility model, cancelled the spool fixed block 24 of the inner chamber front portion that is threaded in self-styled valve seat 21, but at the inner chamber one-body molded of the Self-sealing valve connecting base spacer ring 17 suitable with the structure of spool fixed block 24.The form of the spool fixed block 24 of Self-sealing valve can be various, as space is limited not explanation one by one.
In the third embodiment (as shown in Figure 5), a kind of Self-sealing valve 2 that prevents that Sealing from following the string of the present utility model, comprise self-styled valve seat 21, be located in the inner chamber of self-styled valve seat 21 and external rear face be provided with flange self-styled spool 22, be threaded in the inner chamber front portion of self-styled valve seat 21 spool fixed block 24, be sleeved on the self-styled spring 23 on the outer surface of self-styled spool 22 and between spool fixed block 24 and flange and be connected to the shutoff guard member 3 of the rearward end of self-styled valve seat;
The flange ear end face of self-styled spool 22 is provided with self-styled Sealing 220, and this self-styled Sealing 220 is rubber ring, rubber pad or the rubber parts of sulfuration on self-styled spool 22;
Self-styled spool 22 is provided with position-limit mechanism 221, position-limit mechanism 221 is a limited ring groove, position-limit mechanism 221 can be controlled the decrement of self-styled Sealing 220, make the decrement of self-styled Sealing 220 reach predetermined target, ensure that self-styled Sealing 220, in its elastic range, still has good elasticity, be also difficult for aging, extend greatly the working life of self-styled Sealing 220, improve sealability.
Shutoff guard member 3 is arranged on the rearward end of self-styled valve seat 21; Shutoff guard member 3 comprises block head 32 and capping 33, is provided with some shutoff Sealings 31 between block head 32 and self-styled valve seat 21, and these shutoff Sealings 31 are rubber ring, rubber pad or 0 shape circle.
The Self-sealing valve that prevents that Sealing from following the string of the present utility model, in the time of operation (as shown in Figure 2), Self-sealing valve is in the time connecting shutoff guard member 3, after being in place, shutoff guard member 3 makes self-styled spool move forward a displacement L1, can make the self-styled Sealing 22 of self-styled spool and the sealing surface A of self-styled valve seat 1 not contact, guarantee that self-styled Sealing is in free state, be not subject to the pressure of self-styled spring, ensure that self-styled Sealing has good elasticity, also be difficult for aging, while operation simultaneously, shutoff guard member is guaranteed the sealing of Self-sealing valve, and can guarantee sulfur hexafluoride electrical equipment sealing.There is the function that prevents that Sealing from following the string, have and prevent aging function.
If will or test micro-water to sulfur hexafluoride electrical equipment tonifying Qi time; as long as shutoff guard member 3 is pulled down to (as shown in Figure 3); this Self-sealing valve can first make self-styled spool 22 shutoff gases leak from Self-sealing valve automatically; ensure that Self-sealing valve is reliable sealing; whole process can not be leaked gas, and meets actual techniques and requires and needs.
In a word, Self-sealing valve of the present utility model is not in the time there is no external shutoff guard member, and this Self-sealing valve can make self-styled spool shutoff gas leak from Self-sealing valve automatically, ensures that Self-sealing valve is reliable sealing; And in the time of operation; Self-sealing valve is in the time connecting shutoff guard member, and after being in place, shutoff guard member makes self-styled spool move forward a displacement; can make the self-styled Sealing of self-styled spool and the sealing surface of self-styled valve seat not contact; guarantee that self-styled Sealing, in free state, is not subject to the pressure of self-styled spring, ensure that self-styled Sealing has good elasticity; also be difficult for aging; while operation, shutoff guard member is guaranteed the sealing of Self-sealing valve simultaneously, and can guarantee sulfur hexafluoride electrical equipment sealing.There is the function that prevents that Sealing from following the string, have and prevent aging function.
Can see from above-mentioned many embodiments, the utility model can change and more mode of execution, therefore, those of ordinary skill in the art will be appreciated that, above embodiment is only for claim of the present utility model is described, and be not used as restriction of the present utility model, as long as within the scope of connotation of the present utility model, variation, modification to the above embodiment all will drop within the scope of claims of the present utility model.As Self-sealing valve can have other form, shutoff guard member also can have other form.
Claims (5)
1. a Self-sealing valve that prevents that Sealing from following the string, comprise self-styled valve seat, spool fixed block, the inner chamber of described self-styled valve seat and can axially movable self-styled spool, self-styled Sealing, self-styled spring between spool fixed block and self-styled spool, it is characterized in that, it also comprises the shutoff guard member of the rearward end that is connected to self-styled valve seat; This shutoff guard member comprises that one is positioned at valve seat and is contained in one of spool rear end plug, and is enclosed within the capping on valve seat, and spool end when described plug effective length is greater than Self-sealing valve working state is to the distance of valve seat ear end face.
2. the Self-sealing valve that prevents that Sealing from following the string according to claim 1, is characterized in that, the rear portion of described self-styled spool is provided with self-styled Sealing, and this self-styled Sealing is rubber ring, rubber pad or the rubber parts of sulfuration on self-styled spool.
3. the Self-sealing valve that prevents that Sealing from following the string according to claim 1, is characterized in that, between described shutoff guard member and described self-styled valve seat, is provided with one group of shutoff Sealing, and this group shutoff Sealing is rubber ring, rubber pad or O shape circle.
4. a kind of Self-sealing valve that prevents that Sealing from following the string according to claim 1, is characterized in that, described spool fixed block is that Self-sealing valve seat is positioned at inner chamber relevant position and the integrated spacer ring of self-styled valve seat.
5. a kind of Self-sealing valve that prevents that Sealing from following the string according to claim 1, is characterized in that, self-styled spool is provided with the position-limit mechanism of the decrement of controlling self-styled Sealing, and this position-limit mechanism is the limited ring groove that is positioned at self-styled Sealing periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320787254.3U CN203671012U (en) | 2013-12-04 | 2013-12-04 | Self-sealing valve preventing sealing part from losing elasticity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320787254.3U CN203671012U (en) | 2013-12-04 | 2013-12-04 | Self-sealing valve preventing sealing part from losing elasticity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203671012U true CN203671012U (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320787254.3U Expired - Fee Related CN203671012U (en) | 2013-12-04 | 2013-12-04 | Self-sealing valve preventing sealing part from losing elasticity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203671012U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972252A (en) * | 2016-06-24 | 2016-09-28 | 广州白云电器设备股份有限公司 | Inflation valve seat capable of being used for online correcting meter |
-
2013
- 2013-12-04 CN CN201320787254.3U patent/CN203671012U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972252A (en) * | 2016-06-24 | 2016-09-28 | 广州白云电器设备股份有限公司 | Inflation valve seat capable of being used for online correcting meter |
| CN105972252B (en) * | 2016-06-24 | 2019-02-01 | 广州白云电器设备股份有限公司 | A kind of inflation valve seat can be used for online calibration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20211204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |