CN2111409U - High-pressure stop valve - Google Patents
High-pressure stop valve Download PDFInfo
- Publication number
- CN2111409U CN2111409U CN 91230126 CN91230126U CN2111409U CN 2111409 U CN2111409 U CN 2111409U CN 91230126 CN91230126 CN 91230126 CN 91230126 U CN91230126 U CN 91230126U CN 2111409 U CN2111409 U CN 2111409U
- Authority
- CN
- China
- Prior art keywords
- pressure
- valve
- screw thread
- valve rod
- valve body
- 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.)
- Granted
Links
- 238000012856 packing Methods 0.000 claims abstract description 27
- 210000004907 gland Anatomy 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 22
- 238000007789 sealing Methods 0.000 abstract description 29
- 238000009530 blood pressure measurement Methods 0.000 abstract description 12
- 239000012530 fluid Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 abstract description 2
- -1 polytetrafluoroethylene Polymers 0.000 abstract 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 1
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000010425 asbestos Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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- Details Of Valves (AREA)
Abstract
The utility model provides a high pressure stop valve of modified high pressure fluid pressure measurement or pressure regulating, throttle. The valve adopts polytetrafluoroethylene plastic as a valve rod sealing packing, so that the sealing effect is enhanced, and the service life of the sealing packing is prolonged; the square step is newly designed on the hand wheel connected with the valve rod, so that the valve needle of the valve rod can be conveniently opened and closed without disassembling the hand wheel in a high-pressure state; the gland connected with the valve body screw thread can eliminate the danger that the valve rod is washed away under the condition that the valve rod screw thread is sheared. The utility model has the characteristics of sealing performance is good, use safe and reliable, can leak residual pressure etc. in the valve body automatically, its practicality has been verified in the real way.
Description
The utility model relates to a kind of improved high-pressure stop valve that is used for high-pressure liquid pressure measurement or pressure regulation, throttling.
Existing high-pressure stop valve is made up of valve body, valve rod, valve stem seal packing, handwheel, pad, spring washer and screw.Its workflow is when the pressure measurement of carrying out high-pressure liquid or pressure regulation, throttling operation, the screw thread of high-pressure stop valve valve body left end fluid entry port is connected with high pressure fluidline by crossover sub, the screw thread of high-pressure stop valve valve body upper end fluid outlet is connected or is connected by crossover sub with the pipeline of need pressure regulation, throttling with the pressure instrumentation joint of need pressure measurement.In order to prevent that high-pressure liquid is from entry port, delivery outlet connecting filament buckle seepage, in fluid entry port, delivery outlet screw thread tool withdrawal groove, lay a plane sealing packing ring, crossover sub or pressure instrumentation joint are with entry port, when the delivery outlet screw thread screws and is connected, the upper-end surface of plane sealing packing ring is pressed in crossover sub or pressure instrumentation joint screw thread lower end surface, makes and forms a sealing surface between crossover sub or pressure instrumentation joint screw thread lower end surface and the plane sealing packing ring upper-end surface.Like this, when opening high-pressure liquid and lead to the gate of high-pressure stop valve, high-pressure liquid can be in fluid entry port, delivery outlet connecting filament buckle seepage outward.Hydrodynamic pressure, the flow of the output of high-pressure stop valve delivery outlet are regulated by the needle conical surface of valve rod and the gap between the valve body fluid entry port sealing seat conical surface.When the needle of handwheel drive valve rod was in opening state, the valve stem seal packing sealed the gap between valve rod and valve body, and high-pressure liquid is not leaked.After finishing the pressure measurement operation, the gate that high-pressure liquid is led to high-pressure stop valve closes dead, if pressure regulation, after the throttling operation is finished, when the dead high-pressure liquid in pass leads to the high-pressure stop valve gate, also to close dead high-pressure stop valve delivery outlet and lead to pressure regulation, the gate of choke flow line, at this moment, because still remaining in the valve body have a small amount of high-pressure liquid, therefore before unloading crossover sub or pressure instrumentation joint, must lay down the release screw that communicates with valve body inner high voltage fluid passage earlier, residual pressure in the valve body is unloaded crossover sub or pressure instrumentation joint again after release screw mouth releases.Because existing high-pressure stop valve structure is reasonable inadequately, thereby remains in the some shortcomings part: its valve stem seal packing is made by asbestos knitting wool, because asbestos wool linear sealing poor-performing, working life is also short, therefore, changes more frequent; Its handwheel can only be opened with hand, but when hydrodynamic pressure is very high, only depends on the moment of turn handwheel can't open and close needle.The handwheel of so often having to lay down is bitten the tetragonal body that valve rod cooperates with handwheel with spanner needle is opened and closed, trouble not only, and influence working life of valve rod; Have only a place to be threaded between its valve rod and the valve body, high pressure fluid acts on the connecting thread, when hydrodynamic pressure is very high, might cause screw thread to shear, and valve rod takes place dash the danger of taking off; Existing high-pressure stop valve is after pressure measurement or pressure regulation, throttling operation are finished, residual pressure realizes by dismantling the release screw in the drain body cavity, because the sealing between release screw and the valve body will be born high pressure, so the quality of fit requirement is high, thereby has increased the difficulty of processing technology.
The purpose of this utility model just provides a kind of improved high-pressure stop valve, makes it to avoid effectively the deficiencies in the prior art.
The utility model is achieved in that in order to strengthen the sealing effect between valve rod and the valve body, improve the working life of sealed packing, improved high-pressure stop valve adopts polytetrafluoroethylplastic plastic as the valve stem seal packing, and before and after it, respectively add a metal inner lining pad, to regulate the seal degree of sealed packing to valve rod; For the ease of under high pressure conditions, opening and closing the needle of valve rod, designed the Sifangtai stage structure on the handwheel of improved high-pressure stop valve, when opening and closing needle when needing big moment, need not lay down the cubic step that handwheel directly bites spanner on the handwheel can open and close; Take off in order to prevent that high-pressure liquid shearing valve rod screw thread from dashing valve rod, improved high-pressure stop valve has increased a gland newly, the screw thread box of gland screws on valve body right-hand member screw thread pin thread, the gland interior edge face presses the right side of right inner liner, because gland has limited the activity of inner liner and valve stem seal packing, and inner liner and valve stem seal packing have limited the activity of valve rod, even the valve rod screw thread is sheared under the high-pressure liquid effect, because of the restriction of gland is arranged, many insurances together, valve rod also can not be dashed to be taken off; In order to reduce the difficulty of processing technology, improved high-pressure stop valve is drilled with a diameter on high-pressure liquid delivery outlet screw thread tool withdrawal groove top, valve body upper end be that the release through hole of 2mm is to replace the release screw.When carrying out pressure measurement or pressure regulation, throttling operation, the plane sealing packing ring is placed in entry port and the delivery outlet screw thread tool withdrawal groove, bore under the release through hole on tool withdrawal groove top the upper-end surface that is placed on the plane sealing packing ring in the delivery outlet screw thread tool withdrawal groove, when pressure instrumentation joint or crossover sub and delivery outlet screw thread screw, the screw thread lower end surface of pressure instrumentation joint or crossover sub tightly is pressed on the upper-end surface of plane sealing packing ring, formed a sealing surface, high-pressure liquid can not leaked from the release through hole.After pressure measurement or pressure regulation, throttling operation are finished, bleed off residual pressure in the valve body, can directly dismantle pressure instrumentation joint or crossover sub, leave the upper-end surface of plane sealing packing ring when pressure instrumentation joint or crossover sub screw thread lower end surface one, because the sealing surface between pressure instrumentation joint or crossover sub and the plane sealing packing ring has not existed, remaining high-pressure liquid just releases from the release through hole rapidly in the valve body.Like this, in the time of just can avoiding dismantling pressure instrumentation joint or crossover sub, residual pressure is dashed the accident generation of taking off pressure instrumentation or crossover sub in the valve body.
It is convenient, safe and reliable and can release characteristics such as the interior residual pressure of valve body automatically to the utlity model has good seal performance, bear the pressure height, open and close needle.
Below in conjunction with the embodiment of accompanying drawing detailed description according to the improved high-pressure stop valve that the utility model proposes.
Accompanying drawing is the schematic representation of improved high-pressure stop valve.
As shown in the figure, the screw thread pin thread of valve rod (2) screws with valve body (1) screw thread box and is connected, and the needle conical surface of valve rod (2) and valve body (1) the left end entry port sealing seat conical surface are in sealing state.Two inner liner in valve stem seal packing (4) and its front and back (3) all are sleeved on the valve rod (2), and two inner liner (3) regulating valve stem sealed packings (4) are to the seal degree of valve rod (2).The screw thread box of gland (5) screws with valve body (1) right-hand member screw thread pin thread and is connected, and the interior edge face of gland (5) presses the right side of right inner liner (3).Handwheel (6) is installed on the cubic cylinder of valve rod (2), and screw (9), spring washer (8), pad (7) are fixed together handwheel (6) and valve rod (2).When carrying out pressure measurement or pressure regulation, throttling operation, valve body (1) left end fluid entry port screw thread is connected with high pressure fluidline by crossover sub, the plane sealing packing ring of entry port screw thread tool withdrawal groove bottom is pressed in crossover sub screw thread lower end surface.Valve body (1) upper end fluid outlet screw thread is connected with the pressure instrumentation joint that needs pressure measurement or is connected with the pipeline that needs pressure regulation, throttling by crossover sub, the plane sealing packing ring of delivery outlet screw thread tool withdrawal groove bottom is pressed in pressure instrumentation joint or crossover sub screw thread lower end surface, and bore under the release through hole on delivery outlet screw thread tool withdrawal groove top the upper-end surface of plane sealing packing ring.After high-pressure stop valve installed, open the gate that high-pressure liquid leads to high-pressure stop valve, allow high-pressure liquid enter the fluid entry port passage of valve body (1), at this moment, open handwheel (6), handwheel (6) drives valve rod (2), the needle conical surface and valve body (1) the fluid entry port sealing cone of valve rod (2) are broken away from, high-pressure liquid just leads to the delivery outlet passage from the entry port passage, pressure measurement if desired is by screwing the pressure that the pressure instrumentation that is connected just can be measured high-pressure liquid with the delivery outlet screw thread.The valve that the high-pressure stop valve delivery outlet leads to pressure regulation, choke flow line is opened in pressure regulation or throttling if desired, by the needle conical surface of adjustment valve rod (2) and the gap of valve body (1) fluid entry port sealing cone, just can realize the purpose of pressure regulation or throttling.The gate that only needs after the pressure measurement operation is finished high-pressure liquid to be led to high-pressure stop valve closes extremely, just detachable pressure instrumentation and crossover sub.After pressure regulation, throttling operation are finished, only need to close dead high-pressure liquid and lead to the gate of high-pressure stop valve and the gate that the high-pressure stop valve delivery outlet leads to pressure regulation, choke flow line, just detachable crossover sub.When plane sealing packing ring upper-end surface is left in pressure instrumentation joint or crossover sub screw thread lower end surface one, sealing surface between pressure instrumentation joint or crossover sub screw thread lower end surface and the plane sealing packing ring upper-end surface has not just existed, at this moment, the release through hole that remaining high-pressure liquid will be bored from delivery outlet screw thread tool withdrawal groove top rapidly in the valve body releases, when remaining pressure has been let out, promptly recyclable pressure instrumentation or crossover sub.
Claims (3)
1, a kind of by valve body (1), valve rod (2), valve stem seal packing (4), handwheel (6), pad (7), spring washer (8), the high-pressure stop valve that screw (9) is formed, it is characterized in that improved high-pressure stop valve also comprises inner liner (3), gland (5), valve rod (2) screw thread pin thread screws with valve body (1) screw thread box and is connected, two inner liner in valve stem seal packing (4) and its front and back (3) all are sleeved on the valve rod (2), the screw thread box of gland (5) screws with valve body (1) right-hand member screw thread pin thread and is connected, the interior edge face of gland (5) presses the right side of right inner liner (3), handwheel (6) is installed on the cubic cylinder of valve rod (2), screw (9), spring washer (8), pad (7) is fixed together handwheel (6) and valve rod (2).
2, improved high-pressure stop valve according to claim 1, the through hole that it is 2mm that the tool withdrawal groove top that it is characterized in that valve body (1) upper end high-pressure liquid delivery outlet screw thread is drilled with a diameter.
3, improved high-pressure stop valve according to claim 1 is characterized in that the last design of handwheel (4) has cubic step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91230126 CN2111409U (en) | 1991-10-28 | 1991-10-28 | High-pressure stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91230126 CN2111409U (en) | 1991-10-28 | 1991-10-28 | High-pressure stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2111409U true CN2111409U (en) | 1992-07-29 |
Family
ID=4935491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91230126 Granted CN2111409U (en) | 1991-10-28 | 1991-10-28 | High-pressure stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2111409U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527819A (en) * | 2013-11-01 | 2014-01-22 | 丽水学院 | Water mixing valve capable of discharging constant temperature water |
| CN103836206A (en) * | 2014-02-20 | 2014-06-04 | 武汉汽轮发电机有限公司 | Novel flow regulating valve for steam-turbine generator bearing |
| CN108505965A (en) * | 2018-03-23 | 2018-09-07 | 中煤科工集团西安研究院有限公司 | One kind suppressing desealed hydraulic expansion packer and solution encapsulation method |
| CN110925174A (en) * | 2019-11-28 | 2020-03-27 | 陕西航天动力高科技股份有限公司 | Diaphragm pump plunger chamber drain |
| CN116697054A (en) * | 2023-05-12 | 2023-09-05 | 浙江山力得新材料科技有限公司 | Ultrahigh-pressure slurry stop valve and control method |
-
1991
- 1991-10-28 CN CN 91230126 patent/CN2111409U/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527819A (en) * | 2013-11-01 | 2014-01-22 | 丽水学院 | Water mixing valve capable of discharging constant temperature water |
| CN103836206A (en) * | 2014-02-20 | 2014-06-04 | 武汉汽轮发电机有限公司 | Novel flow regulating valve for steam-turbine generator bearing |
| CN108505965A (en) * | 2018-03-23 | 2018-09-07 | 中煤科工集团西安研究院有限公司 | One kind suppressing desealed hydraulic expansion packer and solution encapsulation method |
| CN110925174A (en) * | 2019-11-28 | 2020-03-27 | 陕西航天动力高科技股份有限公司 | Diaphragm pump plunger chamber drain |
| CN116697054A (en) * | 2023-05-12 | 2023-09-05 | 浙江山力得新材料科技有限公司 | Ultrahigh-pressure slurry stop valve and control method |
| CN116697054B (en) * | 2023-05-12 | 2024-04-05 | 浙江山力得新材料科技有限公司 | Ultrahigh-pressure slurry stop valve and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |