CN109780284B - Double-hydraulic cylinder type self-operated pressure reducing valve - Google Patents
Double-hydraulic cylinder type self-operated pressure reducing valve Download PDFInfo
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- CN109780284B CN109780284B CN201910168583.1A CN201910168583A CN109780284B CN 109780284 B CN109780284 B CN 109780284B CN 201910168583 A CN201910168583 A CN 201910168583A CN 109780284 B CN109780284 B CN 109780284B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000004044 response Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 11
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
According to the self-operated pressure reducing valve with the double hydraulic cylinders, the sleeve brake is sleeved on the periphery of the throttling sleeve and is connected with telescopic rods of the first hydraulic cylinder and the second hydraulic cylinder, a pipeline connected with the valve body is connected with a rod cavity of the first hydraulic cylinder through a first hydraulic pipe, a first pilot valve and the first throttling valve are sequentially arranged on the first hydraulic pipe, a second hydraulic pipe is connected between the rod cavity of the second hydraulic cylinder and the rod cavity of the first hydraulic cylinder, a pipeline behind the first pilot valve is connected with a third hydraulic pipe, a second throttling valve and a second pilot valve are sequentially arranged on the third hydraulic pipe, a fourth hydraulic pipe is connected between the third hydraulic pipe between the second throttling valve and a rodless cavity of the second hydraulic cylinder, a fifth hydraulic pipe is connected between the second hydraulic cylinder and the rodless cavity of the first hydraulic cylinder, and a pressure reducing valve pilot pipe is connected between the second hydraulic pipe and the pipeline connected with the throttling sleeve. Has the advantages of quick response, accurate and convenient regulation and control.
Description
Technical Field
The invention mainly relates to a water supply and diversion engineering decompression technology, in particular to a double-hydraulic cylinder type self-operated decompression valve.
Background
The pressure reducing valve has wide application in urban water supply, water diversion engineering, power station, etc. For the occasion without power supply, a self-operated pressure reducing valve is often adopted. The traditional self-operated pressure reducing valve adopts a pilot pressure reducing valve to control a differential pressure cylinder, and is suitable for small-size pressure reducing valves. However, when the pressure reducing valve is in a large-caliber high-pressure-difference environment, the traditional self-operated pressure reducing valve cannot realize accurate regulation and control, and the response speed is low.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing the double-hydraulic cylinder type self-operated pressure reducing valve which is quick in response, accurate and convenient to regulate and control.
In order to solve the technical problems, the invention adopts the following technical scheme:
The utility model provides a two pneumatic cylinder type self-operated relief pressure valves, includes throttle sleeve, valve body, sleeve floodgate, first pneumatic cylinder and second pneumatic cylinder, the throttle sleeve sets up to one end opening, the other end is closed, the throttle sleeve suit is on the valve body, the open connection pipeline of valve body, the throttle sleeve is close to the global water inlet that is provided with of closed end, and first pneumatic cylinder and second pneumatic cylinder are all installed at the closed end of valve body, sleeve floodgate suit is at the throttle sleeve periphery and is connected with the telescopic link of first pneumatic cylinder and second pneumatic cylinder, the pipeline that the valve body is connected has the pole chamber of first pneumatic cylinder through first pneumatic tube connection, first pneumatic tube has set gradually first pilot valve and first throttle on the first pneumatic tube, be connected with the second pneumatic tube between the pole chamber of second pneumatic tube to first pneumatic tube and first pneumatic tube, the pipeline connection behind the first pilot valve has the third pneumatic tube, set gradually second throttle valve and second pilot valve on the third pneumatic tube, the second pneumatic tube has the second pneumatic tube to have the second pneumatic tube to be connected with the fifth pneumatic tube between the first pneumatic tube and the second pneumatic tube.
As a further improvement of the above technical scheme:
And a third pilot valve is arranged on a pipeline connected with the rod cavity of the hydraulic cylinder.
The hydraulic control system comprises a first hydraulic pipe, a second hydraulic pipe, a third hydraulic pipe, a fourth hydraulic pipe, a fifth hydraulic pipe, a sixth hydraulic pipe, a first normally-closed stop valve, a seventh hydraulic pipe, a second liquid discharge pipe and a second normally-closed stop valve, wherein the first normally-open stop valve is arranged on the first hydraulic pipe, the second normally-open stop valve is arranged on the third hydraulic pipe, the sixth hydraulic pipe is connected with the second hydraulic pipe, the first liquid discharge pipe is connected with the sixth hydraulic pipe, the first normally-closed stop valve is arranged on the sixth hydraulic pipe and the first liquid discharge pipe, the seventh hydraulic pipe is connected with the first hydraulic pipe, the second liquid discharge pipe is connected with the fifth hydraulic pipe, and the second normally-closed stop valve is arranged on the seventh hydraulic pipe and the second liquid discharge pipe.
The first hydraulic pipe is also provided with a standby hydraulic pipe, and the standby hydraulic pipe is provided with a third normally closed stop valve.
Compared with the prior art, the invention has the advantages that:
1. The double-hydraulic-cylinder type self-operated pressure reducing valve realizes self-operated adjustment by utilizing the two pilot valves and the two hydraulic cylinders, has comparability and visibility of adjustment quantity, is convenient to adjust, and is convenient to realize quick and accurate pressure adjustment effect.
2. The double-hydraulic cylinder type self-operated pressure reducing valve is provided with the pressure reducing valve pilot pipe and the third pilot valve, so that the pressure of the system is ultrahigh, the system can respond quickly, and the dynamic performance of the system is improved.
3. The double-hydraulic cylinder type self-operated pressure reducing valve has the functions of manual locking and manual forced operation.
Drawings
Fig. 1 is a schematic view of the present invention.
Fig. 2 is a schematic structural view of the self-operated pressure reducing valve in the present invention.
The reference numerals in the drawings denote:
1. A throttle sleeve; 2. a valve body; 3. a sleeve gate; 5. a first hydraulic cylinder; 6. a second hydraulic cylinder; 7. a first hydraulic pipe; 71. a standby hydraulic pipe; 8. a first pilot valve; 9. a first throttle valve; 10. a second hydraulic pipe; 11. a third hydraulic pipe; 12. a second throttle valve; 13. a second pilot valve; 14. a fourth hydraulic pipe; 15. a fifth hydraulic pipe; 16. the pressure release valve is a conduit; 17. a third pilot valve; 18. a first normally open shut-off valve; 19. a second normally open shut-off valve; 20. a sixth hydraulic pipe; 21. a first liquid discharge pipe; 22. a first normally closed shut-off valve; 23. a seventh hydraulic pipe; 24. a second liquid discharge pipe; 25. a second normally closed shut-off valve; 26. and a third normally closed shut-off valve.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific examples.
As shown in fig. 1 and 2, an embodiment of the dual-hydraulic cylinder type self-operated pressure reducing valve comprises a throttling sleeve 1, a valve body 2, a sleeve gate 3, a first hydraulic cylinder 5 and a second hydraulic cylinder 6, wherein the throttling sleeve 1 is provided with an opening at one end and a closing at the other end, the throttling sleeve 1 is sleeved on the valve body 2, the opening of the valve body 2 is connected with a pipeline, the periphery of the throttling sleeve 1, which is close to the closing end, is provided with a water inlet, the first hydraulic cylinder 5 and the second hydraulic cylinder 6 are both arranged at the closing end of the valve body 2, the sleeve gate 3 is sleeved on the periphery of the throttling sleeve 1 and is connected with a telescopic rod of the first hydraulic cylinder 5 and the telescopic rod of the second hydraulic cylinder 6, the pipeline connected with the valve body 2 is connected with a rod cavity of the first hydraulic cylinder 5 through a first hydraulic pipe 7, a first pilot valve 8 and a first throttle valve 9 are sequentially arranged on the first hydraulic pipe 7, a second hydraulic pipe 10 is connected between the rod cavity of the second hydraulic cylinder 6 and the rod cavity of the first hydraulic cylinder 5, a third hydraulic pipe 11 is connected with the pipeline behind the first pilot valve 8, a third hydraulic pipe 11 is connected with a second hydraulic pipe 13 and a second hydraulic pipe 13 is sequentially arranged between the second pipe 11 and the second hydraulic cylinder 6 and the second hydraulic pipe is connected with the second hydraulic cylinder 6, and the first hydraulic pipe 13 is connected with the second hydraulic pipe 13 and the second hydraulic pipe 13 is connected with the second hydraulic pipe 13. The first pilot valve 8 is higher than the set pressure of the second pilot valve 13, a rod cavity is formed behind the first pilot valve 8, a rod-free cavity is formed behind the second pilot valve 13, the small-area cavity of the first hydraulic cylinder 5 is matched with high pressure, the large-area cavity of the second hydraulic cylinder 6 is matched with low pressure, and therefore force balance is achieved, and the sleeve brake 3 is stabilized at a certain opening degree. When the pressure of the opening end (pipeline behind the valve) of the throttling sleeve 1 is higher than a set value, the second pilot valve 13 is closed, the water flows of the fourth hydraulic pipe 14 and the fifth hydraulic pipe 15 flow into the rodless cavity of the second hydraulic cylinder 6 and the first hydraulic cylinder 5 to push the sleeve brake 3 to move towards the closing direction to adjust the opening degree until the pressure reaches the set value; when the pressure at the open end (valve back pipe) of the throttle sleeve 1 is lower than the set value, the opening degree of the second pilot valve 13 is increased, and the water flows of the first hydraulic pipe 7 and the second hydraulic pipe 10 flow into the rod cavities of the first hydraulic cylinder 5 and the second hydraulic cylinder 6 to push the sleeve gate 3 to move to the open direction to adjust the opening degree until the pressure reaches the set value. The pressure reducing valve realizes self-operated adjustment by utilizing the two pilot valves and the two hydraulic cylinders, has comparability and visibility of adjustment quantity, is convenient to adjust, and is convenient to realize quick and accurate pressure adjusting effect.
In this embodiment, a third pilot valve 17 is mounted on the pipe to which the rod chamber of the hydraulic cylinder is connected. In the structure, when the pressure behind the valve is ultrahigh, the third pilot valve 17 is opened, the pressure of the rod cavity is emptied, the pressure of the rodless cylinder is approximately equal to the pressure in front of the valve, the valve is quickly closed until the pressure reaches a set value, and when the pressure of the system is ultrahigh, the system can quickly respond, so that the dynamic performance of the system is improved.
In this embodiment, the first normally open stop valve 18 is provided on the first hydraulic pipe 7, the second normally open stop valve 19 is provided on the third hydraulic pipe 11, the sixth hydraulic pipe 20 is connected between the first hydraulic pipe 7 and the second hydraulic pipe 10, the first drain pipe 21 is connected on the sixth hydraulic pipe 20, the first normally closed stop valve 22 is provided on the sixth hydraulic pipe 20 and the first drain pipe 21, the seventh hydraulic pipe 23 is connected between the fifth hydraulic pipe 15 and the first hydraulic pipe 7, the second drain pipe 24 is connected on the fifth hydraulic pipe 15, and the second normally closed stop valve 25 is provided on the seventh hydraulic pipe 23 and the second drain pipe 24. The structure is provided with manual locking and manual forced operation functions, when the manual forced opening is carried out, a first normally closed stop valve 22 on a sixth hydraulic pipe 20 and a second normally closed stop valve 25 on a second liquid discharge pipe 24 are opened, a first normally closed stop valve 22 on a first liquid discharge pipe 21, a first normally open stop valve 18 (back) on a first hydraulic pipe 7, a second normally closed stop valve 25 on a seventh hydraulic pipe 23 and a second normally open stop valve 19 (front) on a third hydraulic pipe 11 are closed, and the sleeve brake 3 moves towards the opening; when the hydraulic valve is forcibly closed manually, the first normally-closed stop valve 22 on the first liquid discharge pipe 21 and the second normally-closed stop valve 25 on the seventh hydraulic pipe 23 are opened, the first normally-closed stop valve 22 on the sixth hydraulic pipe 20, the first normally-open stop valve 18 (rear) on the first hydraulic pipe 7, the second normally-open stop valve 19 (front) on the third hydraulic pipe 11 and the second normally-closed stop valve 25 on the second liquid discharge pipe 24 are closed, and the sleeve gate 3 moves in the closing direction; when the lock is forcibly locked manually, the second normally closed shut-off valve 25 on the seventh hydraulic pipe 23, the second normally open shut-off valve 19 (both front and rear) on the third hydraulic pipe 11, and the first normally open shut-off valve 18 (rear) on the first hydraulic pipe 7 are closed, and the sleeve gate 3 does not move.
In this embodiment, the first hydraulic pipe 7 is further provided with a backup hydraulic pipe 71, and the backup hydraulic pipe 71 is provided with a third normally closed shut-off valve 26. The arrangement of the backup hydraulic pipe 71 and the third normally closed shut-off valve 26 forms a backup shunt, which improves the application range.
While the invention has been described in terms of preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.
Claims (3)
1. A double-hydraulic cylinder type self-operated pressure reducing valve is characterized in that: including throttle sleeve (1), valve body (2), sleeve floodgate (3), first pneumatic cylinder (5) and second pneumatic cylinder (6), throttle sleeve (1) sets up to one end opening, the other end is closed, throttle sleeve (1) suit is on valve body (2), the open connection pipeline of valve body (2), the global water inlet that is close to the closed end of throttle sleeve (1) is provided with, the closed end at valve body (2) is all installed to first pneumatic cylinder (5) and second pneumatic cylinder (6), sleeve floodgate (3) suit is in throttle sleeve (1) periphery and is connected with the telescopic link of first pneumatic cylinder (5) and second pneumatic cylinder (6), the pipeline that valve body (2) are connected is through the first hydraulic pipe (7) connection first pneumatic cylinder (5) have the pole chamber, first pilot valve (8) and first pilot valve (9) have been set gradually on first hydraulic pipe (7), the pole chamber of second pneumatic cylinder (6) is connected with first hydraulic pipe (11) to first pilot valve (9) and second pneumatic pipe (5) have between first hydraulic pipe (11) and second pneumatic pipe (11) in proper order, a fourth hydraulic pipe (14) is connected between a third hydraulic pipe (11) between the second throttle valve (12) and the second pilot valve (13) and a rodless cavity of the second hydraulic cylinder (6), a fifth hydraulic pipe (15) is connected between the rodless cavities of the second hydraulic cylinder (6) and the first hydraulic cylinder (5), a pressure release valve pilot pipe (16) is connected between a pipeline connected with the second hydraulic pipe (10) and the throttle sleeve (1), a first normally open stop valve (18) is arranged on the first hydraulic pipe (7), a second normally open stop valve (19) is arranged on the third hydraulic pipe (11), a sixth hydraulic pipe (20) is connected between the first hydraulic pipe (7) and the second hydraulic pipe (10), a first normally closed stop valve (22) is arranged on the sixth hydraulic pipe (20) and the first hydraulic pipe (21), a seventh hydraulic pipe (23) is connected with the fifth hydraulic pipe (24), and a seventh hydraulic pipe (23) is connected with the fifth hydraulic pipe (24).
2. The double cylinder type self-operated pressure reducing valve according to claim 1, wherein: and a third pilot valve (17) is arranged on a pipeline connected with the rod cavity of the first hydraulic cylinder (5) and the second hydraulic cylinder (6).
3. The double cylinder type self-operated pressure reducing valve according to claim 2, wherein: the first hydraulic pipe (7) is also provided with a standby hydraulic pipe (71), and the standby hydraulic pipe (71) is provided with a third normally closed stop valve (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910168583.1A CN109780284B (en) | 2019-03-06 | 2019-03-06 | Double-hydraulic cylinder type self-operated pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910168583.1A CN109780284B (en) | 2019-03-06 | 2019-03-06 | Double-hydraulic cylinder type self-operated pressure reducing valve |
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| Publication Number | Publication Date |
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| CN109780284A CN109780284A (en) | 2019-05-21 |
| CN109780284B true CN109780284B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910168583.1A Active CN109780284B (en) | 2019-03-06 | 2019-03-06 | Double-hydraulic cylinder type self-operated pressure reducing valve |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4490836A (en) * | 1980-12-19 | 1984-12-25 | Sulzer Brothers Limited | Shut-off valve |
| US6241212B1 (en) * | 1998-04-21 | 2001-06-05 | Hitachi Construction Machinery Co., Ltd. | Hose rupture control valve unit |
| CN202082201U (en) * | 2011-05-20 | 2011-12-21 | 上海梅山钢铁股份有限公司 | Device for regulating double-acting hydraulic cylinder working medium temperatures |
| CN103807236A (en) * | 2014-01-22 | 2014-05-21 | 浙江大学 | Multi-cylinder flow distribution hydraulic system with independently-controlled valve control unit load ports |
| CN204140508U (en) * | 2014-09-12 | 2015-02-04 | 鞍钢集团工程技术有限公司 | A kind of reel harmomegathus footpath hydraulic control system |
| CN209587249U (en) * | 2019-03-06 | 2019-11-05 | 湖南农业大学 | Double hydraulic cylinder type Self-operated pressure reducing valve |
-
2019
- 2019-03-06 CN CN201910168583.1A patent/CN109780284B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4490836A (en) * | 1980-12-19 | 1984-12-25 | Sulzer Brothers Limited | Shut-off valve |
| US6241212B1 (en) * | 1998-04-21 | 2001-06-05 | Hitachi Construction Machinery Co., Ltd. | Hose rupture control valve unit |
| CN202082201U (en) * | 2011-05-20 | 2011-12-21 | 上海梅山钢铁股份有限公司 | Device for regulating double-acting hydraulic cylinder working medium temperatures |
| CN103807236A (en) * | 2014-01-22 | 2014-05-21 | 浙江大学 | Multi-cylinder flow distribution hydraulic system with independently-controlled valve control unit load ports |
| CN204140508U (en) * | 2014-09-12 | 2015-02-04 | 鞍钢集团工程技术有限公司 | A kind of reel harmomegathus footpath hydraulic control system |
| CN209587249U (en) * | 2019-03-06 | 2019-11-05 | 湖南农业大学 | Double hydraulic cylinder type Self-operated pressure reducing valve |
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| CN109780284A (en) | 2019-05-21 |
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