CN2534430Y - Plunger type automatic compensating pressure valve - Google Patents
Plunger type automatic compensating pressure valve Download PDFInfo
- Publication number
- CN2534430Y CN2534430Y CN 01280016 CN01280016U CN2534430Y CN 2534430 Y CN2534430 Y CN 2534430Y CN 01280016 CN01280016 CN 01280016 CN 01280016 U CN01280016 U CN 01280016U CN 2534430 Y CN2534430 Y CN 2534430Y
- Authority
- CN
- China
- Prior art keywords
- piston
- valve
- sealing cap
- sealing
- cushion rubber
- 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 - Fee Related
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Abstract
A plunger type automatic compensation pressure valve with the automatic compensation pressure function, which is characterized in that an automatic compensation pressure device is arranged on the valve body, see as the diagram 3. The utility model is divided into an upper piston (10) and a lower piston (16). A spring (13) is arranged between two pistons. When the upper and lower pistons are closed, the spring is compressed, a gap of 2mm is left, then is locked by a rivet (22). A guiding bead (12) which is connected to the guiding groove of the upper valve mouth is arranged at the top end of the upper piston. A poly fluorine sealing ring (17) and a special rubber ring (18) are arranged at the bottom of the lower piston, which are fixed with a washer (19) and a screw (20). The upper end of the piston rod is connected to the hand wheel. The lower end is connected to the upper piston. When the hand wheel is turned and the compensation pressure device reaches pressure storage of 50 mpa, the double sealing ring is pushed down to press the lower valve mouth. The pressure compensation is freely reached in case looseness occurs. A sealing cap is arranged on the upper valve mouth. A rubber ring is arranged on the lower end of the sealing cap and the valve mouth. A rubber ring is arranged on the upper end of the sealing cap. A reverse rubber ring is arranged on the jointing area between the limitation stage of the piston rod and the upper end of the sealing cup. Second high pressure sealing protection is formed in the sealing cap. The external connection way which is suitable for flange, inner thread and outer thread etc are provided by the consumer.
Description
Affiliated technical field
The utility model relates to a kind of valving of guaranteeing that sulphur hexafloride circuit breaker gas does not leak, and especially it can have the realization self-compensating pressure when spool and valve port are loosening, makes the valve function of locking in time.Adopt piston valve core individual event check piston rod and sealed bonnet structure, replaced the domestic and international traditional structure of expansion tube type, realize anti-high pressure, anti-low pressure, high temperature resistant, low temperature resistant double effects.It is a kind of new-type plunger type self-compensating pressure valve that has the self-compensating pressure function specifically.
Background technique
Domestic and international at present sulphur hexafloride circuit breaker gas valve structure of producing, substantially be to combine by handwheel, nut, expansion tube, valve body, spool, poly-tetrafluoro mounting, its sealing principle is: the upper end sealing to valve mainly is by expansion tube, sealing to the lower end valve port is by poly-tetrafluoro list diaphragm seal, the structure weakness of this valve: 1, the welding process requirement height of expansion tube, solder joint is easy to crack.2, anti-high pressure is poor, and gas has cracking phenomena under the 3.0mpa situation.3, lower temperature resistance is poor, and operation is easy to crack under subzero 30 ℃ of low temperature.Yielding when 4, the valve rod pressurized is big, make the mounting bias voltage of valve occur leaking.5, poly-tetrafluoro mounting meeting hardening under low temperature condition, the tetrafluoro mounting is shunk with the valve port front cover gap occurs, make gas leakage, above-mentioned problem has lets out soon and lets out slowly, table was difficult for finding in the short time if lose heart slowly, brought unsafe hidden danger for the normal operation of switch.
Summary of the invention
In order to overcome the easy to crack, easily loosening of existing expansion tube and screw type valve, the unsettled deficiency of sealability, it is a kind of not with the plunger type self-compensating pressure valve of expansion tube type that the utility model provides, this plunger type self-compensating pressure valve can be realized self-compensating pressure when the blocking of valve is loosening, make the function of valve auto lock.Its two, adopt the piston seal spool, individual event check rod seal bonnet replaces the traditional type expansion tube, reaches high pressure resistant full-enclosed type structure.Its three, lower valve port is adopted double seal ring, promptly poly-tetrafluoro and the special seal ring of rubber, structure have guaranteed that valve is reliable at high temperature, high pressure, low temperature, low-pressure state lower seal, reach the not purpose of gas leakage.Its four, adopted the self-compensating pressure device, the 500kg stage clip is installed in piston, it is loosening that piston rod and double seal ring are issued to throughout the year at reaction force, can guarantee the switch safe operation.
The problem that solves
The technical scheme in the invention for solving the technical problem is:
One, the plunger type piston valve core is adopted in the sealing of valve body upper end; and at piston and the middle two road O-ring seals that are equipped with of valve body; last valve port has cushion rubber with sealing cap screw socket joint; sealing cap and piston rod joint are equipped with two road cushion rubbers; make to form secondary high-pressure seal protection chamber in the sealing cap, can reach under the 20mpa air pressure and not ftracture, do not leak.
Two, lower valve port is adopted double-sealing, promptly be equipped with together poly-tetrafluoro seal ring in the lower piston bottom, special cushion rubber makes valve port obtain secondary seal and protection simultaneously together.
Three, self-compensating pressure device, be piston cylinder formula the inside in the valve body piston assembling is installed, it divides upward lower piston, is equipped with spring in two-piston, when handwheel drive piston rod promotion piston moves down, two-piston pressing spring, compression simultaneously reach deposit pressure can guarantee that piston is not loosening under normal pressure at 50mpa, even occurrence temperature changes, when external impact caused piston work relax, the self-compensating pressure device can discharge enough pressure, in time reached the compensatory pressure purpose.
Beneficial effect
1, when valve seal takes place to become flexible,, need not guard by the ftercompction in time of self-compensating pressure device.
2,, adopt the plunger type piston structure not leak, not ftracture by anti-20mpa barometric pressure to the valve body top seal.
3, to valve body top sealing valve port, adopt sealing cap formula and individual event check stem structure, realize the secondary seal protection, can anti-high pressure, low temperature resistant, increase the service life.
4, to the lower valve port sealing, adopt rubber and poly-tetrafluoro to make double seal ring, reach the effect of high temperature resistant, low temperature resistant and anti-pressurized gas, owing under the normal pressure of compensatory pressure device, make piston not loosening, reach the reliability of sealing.
Description of drawings
Embodiment further specifies the utility model below in conjunction with accompanying drawing.
The sectional structure chart of the enforcement system example of accompanying drawing 1 plunger type self-compensating pressure valve.
Accompanying drawing 2 is a kind of mounting flange structural drawing of accompanying drawing 1 valve body.
Accompanying drawing 3 is the self-compensating pressure apparatus structure sectional views in accompanying drawing 1 valve body.
Among the figure 1, handwheel 2, fastening screw trip bolt 3, packing ring 4, piston rod 5, skidding 6, cushion rubber 7, nylon packing 8, cushion rubber 9, sealing cap 10, upper piston 11, cushion rubber 12, guiding pearl 13, spring 14, cushion rubber 15, cushion rubber 16, lower piston 17, poly-tetrafluoro seal ring 18, special cushion rubber 19, packing ring 20, fastening screw trip bolt 21, valve body 22, rivet 23, self-compensating pressure control valve unit
In Fig. 1, be valve body (21), self-compensating pressure device (23) is installed in valve body, it divides upward lower piston (10) and lower piston (16), spring (13) is installed in the middle of the lower piston, join with rivet (22) riveting, the upper piston middle part is equipped with guiding pearl (12) and is connected with valve port place guiding groove, the lower piston bottom is equipped with poly-tetrafluoro seal ring (17) and special cushion rubber (18), fix with packing ring (19) and screw (20), two-piston and valve body middle part are equipped with two road cushion rubber (14) and (15), and piston rod (4) is connected with skidding (5) handwheel (1), and there is a limit dais piston rod upper end, prevent that piston rod is radially movable, be equipped with cushion rubber (8) and nylon packing (7) on the platform and be slidingly matched with sealing cap (9), at sealing cap and valve body screw socket joint cushion rubber (11) is installed, the interior upper end of sealing cap is equipped with cushion rubber (6) and is slidingly matched with piston rod.
Claims (3)
1, plunger type self-compensating pressure valve, it comprises valve body, its feature is equipped with the self-compensating pressure device in valve body, it divides upper piston and lower piston, spring is installed in two-piston, middle part slip place of valve body and two-piston is equipped with the twice cushion rubber, and the lower piston bottom is equipped with poly-tetrafluoro seal ring and special cushion rubber, and the guiding groove that valve port on guiding pearl and the valve body is housed at the upper piston middle part is connected.
2, plunger type self-compensating pressure valve according to claim 1, it is characterized in that, in buckle the sealing cap lower end with on valve port screw thread place be equipped with cushion rubber, the upper end is equipped with one cushion rubber and piston rod is slidingly matched in the sealing cap, the piston rod middle part has a limit dais, top to be equipped with cushion rubber and the sealing cap upper outlet is sealed and matched, and piston rod passes through sealing cap, skidding and handwheel link together, by packing ring and screw.
3, plunger type self-compensating pressure valve according to claim 1, feature be, is the piston cylinder formula in the valve body, and it and the piston middle part that is slidingly matched is provided with the two seals cushion rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01280016 CN2534430Y (en) | 2001-12-30 | 2001-12-30 | Plunger type automatic compensating pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01280016 CN2534430Y (en) | 2001-12-30 | 2001-12-30 | Plunger type automatic compensating pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2534430Y true CN2534430Y (en) | 2003-02-05 |
Family
ID=33683125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01280016 Expired - Fee Related CN2534430Y (en) | 2001-12-30 | 2001-12-30 | Plunger type automatic compensating pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2534430Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110741190A (en) * | 2017-06-13 | 2020-01-31 | 罗伯特·博世有限公司 | Valve device |
-
2001
- 2001-12-30 CN CN 01280016 patent/CN2534430Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110741190A (en) * | 2017-06-13 | 2020-01-31 | 罗伯特·博世有限公司 | Valve device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |