CN204062108U - Hydroturbine water intake main valve protective gear - Google Patents
Hydroturbine water intake main valve protective gear Download PDFInfo
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- CN204062108U CN204062108U CN201420350847.8U CN201420350847U CN204062108U CN 204062108 U CN204062108 U CN 204062108U CN 201420350847 U CN201420350847 U CN 201420350847U CN 204062108 U CN204062108 U CN 204062108U
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Abstract
The utility model discloses a kind of hydroturbine water intake main valve protective gear, relate to a kind of hydroturbine water intake main valve auxiliary device, comprise in it oil hydraulic cylinder being provided with piston and push rod thereof, and the main body to be connected and fixed with described oil hydraulic cylinder, cavity is provided with in described main body, this cavity is by being located at pressure relief vent in main body and pressure release entrance and ft connection, described pressure release entrance is provided with the pressure release sealing plate of this entrance of energy movable sealing, cylinder chamber body is separated into hydraulic pressure cavity and spring element chamber by described piston, described hydraulic pressure cavity is in communication with the outside by the two-position four way change valve be located on oil hydraulic cylinder, the spring element hindering described piston towards the movement of spring element chamber is provided with in described spring element chamber, described push rod to extend out to through described spring element chamber in the cavity in described main body and is connected and fixed with described pressure release sealing plate.The utility model avoids " water hammer effect " produces destruction to valve and pressure piping, and ensure that the safe operation in water power plant, is a kind of water inlet main valve protective gear on the upstream short tube of inlet valve.
Description
Technical field
The utility model relates to a kind of hydroturbine water intake main valve auxiliary device, particularly relates to the protective gear on the upstream short tube of inlet valve.
Background technique
Hydroturbine water intake main valve is one of the key equipment in water power plant, is installed between penstock and water turbine inducer.When unit and speed control system break down, need to close rapidly water inlet main valve and block current, prevent unit from flying the ease time and exceed permitted value, avoid fault spread.Inner at penstock, inner tube wall is smooth, water flow freely, when the valve opened is closed suddenly, current to valve and tube wall mainly valve can produce a pressure.Because tube wall is smooth, follow-up current, under the effect of inertia, reach rapidly maximum, and produce destruction, " water hammer effect " in the middle of Here it is hydro science.Water hammer effect has great destructiveness: due to the generation of water hammer, several times even tens times that pressure in pipeline are sharply increased to exceed normal pressure, can cause pipeline break and inlet valve damages, thus connect the safety endangering whole water power plant.
Each water power plant is the harm avoiding water hammer effect to cause when designing, all the safety coefficient of the parts such as penstock, water inlet main valve is strengthened (that is: improve design parameter, thicken the thickness of pressure piping and piping element), which improves construction of hydropower stations cost and water inlet main valve manufacture cost.
Model utility content
The purpose of this utility model is: for avoiding " water hammer effect " to produce destruction to valve and pressure piping, ensureing the safe operation in water power plant, proposing a kind of water inlet main valve protective gear on the upstream short tube of inlet valve.
The purpose of this utility model is realized by following technical proposals:
A kind of hydroturbine water intake main valve protective gear, comprise in it oil hydraulic cylinder being provided with piston and push rod thereof, and the main body to be connected and fixed with described oil hydraulic cylinder, cavity is provided with in described main body, this cavity is by being located at pressure relief vent in main body and pressure release entrance and ft connection, described pressure release entrance is provided with the pressure release sealing plate of this entrance of energy movable sealing, cylinder chamber body is separated into hydraulic pressure cavity and spring element chamber by described piston, described hydraulic pressure cavity is in communication with the outside by the two-position four way change valve be located on oil hydraulic cylinder, the spring element hindering described piston towards the movement of spring element chamber is provided with in described spring element chamber, described push rod to extend out to through described spring element chamber in the cavity in described main body and is connected and fixed with described pressure release sealing plate.
As selection, described spring element is spring, and described spring shackle is located between described piston and main body around described push rod.
As selection, described pressure release sealing plate is fixed on described push rod termination through sealing plate gland.
As further selection, described pressure release sealing plate and be also provided with between sealing plate gland and push rod and split annulus.
As selection, between described push rod and main body, between oil hydraulic cylinder and main body, and be equipped with seal ring between piston and oil hydraulic cylinder.
The main scheme of aforementioned the utility model and each further selection scheme thereof can independent assortment to form multiple scheme; be the utility model can adopt and claimed scheme: as the utility model; each selection can select combination in any with other; those skilled in the art can understand there is multiple combination according to prior art and common practise after understanding the present invention program; be the claimed technological scheme of the utility model, do not do exhaustive at this.
Workflow of the present utility model:
When needs emergency cut-off inlet valve, the commutation of valve control system instruction two-position four-way solenoid directional control valve, promote piston and push rod with the water of high pressure by the hydraulic pressure cavity that two-position four-way solenoid directional control valve enters into rapidly oil hydraulic cylinder in pressure piping to move to spring element chamber, push rod promotes pressure release sealing plate further and moves downward, pressure release sealing plate the pressure release inlet seal face of sealing surface and main body disengage, medium in pressure piping enters in body cavity by the intermittent flow between pressure release sealing plate and main body pressure release entrance, then discharge through pressure relief vent, thus reduction causes because of " water hammer effect " pressure sharply risen in pressure piping.
After hydroturbine water intake valve cuts out, two-position four-way solenoid directional control valve commutates again, no longer enter in oil hydraulic cylinder with the water of high pressure in pressure piping, now, pressure medium in pressure piping in pressure release sealing plate the back side produce one oppositely to the thrust of oil hydraulic cylinder, spring spring force with under the acting in conjunction of pressure release sealing plate thrust, promote piston move to hydraulic pressure cavity direction, the water of hydraulic pressure cavity in oil hydraulic cylinder is discharged, the reset of pressure release sealing plate.The spring force of reset rear spring and pressure release sealing plate thrust by pressure release sealing plate sealing surface compact on the sealing surface of main body pressure release entrance, thus the medium in sealing load pipeline, makes the water in pressure piping not discharge through pressure relief opening.
The beneficial effects of the utility model: installed inlet valve protective gear additional on the short tube of hydroturbine water intake valve upstream after; effectively eliminate and cause pressure in pressure piping sharply to increase when accident emergency cut-off water inlet main valve because of " water hammer effect "; thus effectively protect the Security of inlet valve, pressure piping and piping element; the effective safe operation ensureing water power plant, also saves construction of hydropower stations cost and water inlet main valve manufacture cost simultaneously.
Accompanying drawing explanation
Fig. 1 is the use assembling schematic diagram of the utility model embodiment;
In figure, 1. pressure release sealing plate, 2. splits annulus, 3. sealing plate gland, 4. main body, 5. push rod, 6. seal ring A, 7. spring, 8. seal ring B, 9. screw, 10. oil hydraulic cylinder, 11. pistons, 12. seal ring C, 13. piston unts, 14. hydraulic pressure cavity, 15. spring element chambeies, 17. pressure release entrances, 18. pressure relief vent, 19. inlet valve upstream short tubes, 20. two-position four way change valves, 21. cavitys.
Embodiment
Below in conjunction with specific embodiments and the drawings, the utility model is further described.
As shown in Figure 1, a kind of hydroturbine water intake main valve protective gear, comprise in it oil hydraulic cylinder 10 being provided with piston 11 and push rod 5 thereof, and the main body 4 to be connected and fixed with oil hydraulic cylinder 10, cavity 21 is provided with in main body 4, this cavity 21 is by being located at pressure relief vent 18 in main body 4 and pressure release entrance 17 and ft connection, and be communicated with inlet valve upstream short tube 19 through pressure release entrance 17, pressure release entrance 17 is provided with the pressure release sealing plate 1 of this entrance of energy movable sealing, oil hydraulic cylinder 10 inner chamber body is separated into hydraulic pressure cavity 14 and spring element chamber 15 by piston 11, hydraulic pressure cavity 14 is in communication with the outside by the two-position four way change valve 20 be located on oil hydraulic cylinder 10, the water pipe and two-position four way change valve 20 runs in flatly, the spring element hindering piston 11 towards spring element chamber 15 movement is provided with in spring element chamber 15, push rod 5 to extend out to through spring element chamber 15 in the cavity 21 in main body 4 and is connected and fixed with pressure release sealing plate 1.As selection, as shown in this embodiment, spring element is spring 7, and spring 7 is located between piston 11 and main body 4 around push rod 5.Pressure release sealing plate 1 is fixed on push rod 5 termination through sealing plate gland 3, pressure release sealing plate 1 and be also provided with between sealing plate gland 3 and push rod 5 and split annulus 2.Be provided with seal ring A6 between push rod 5 and main body 4, between oil hydraulic cylinder 10 and main body 4, be provided with seal ring B8, between piston 11 and oil hydraulic cylinder 10, be provided with seal ring C12.
Workflow of the present utility model:
When needs emergency cut-off inlet valve, the commutation of valve control system instruction two-position four-way solenoid directional control valve, enter into rapidly oil hydraulic cylinder 10 with the water of high pressure by two-position four-way solenoid directional control valve in pressure piping and promote piston 11 and push rod 5 moves downward, push rod 5 promotes pressure release sealing plate 1 and moves downward, the sealing surface of pressure release sealing plate 1 and the sealing surface of main body 4 disengage, medium in pressure piping enters in main body 4 by the intermittent flow between pressure release sealing plate 1 and main body 4, then discharge through pressure relief opening, thus reduction causes because of " water hammer effect " pressure sharply risen in pressure piping.
After hydroturbine water intake valve cuts out, two-position four-way solenoid directional control valve is to valve, no longer enter in oil hydraulic cylinder 10 in pressure piping, now, pressure medium in pressure piping produces a thrust upwards in the back side of pressure release sealing plate 1, spring 7 spring force with under the acting in conjunction of pressure release sealing plate 1 thrust, promote piston 11 move upward, discharged by the water in oil hydraulic cylinder 10, pressure release sealing plate 1 resets.The spring force of reset rear spring 7 and pressure release sealing plate 1 thrust are by the sealing surface compact of pressure release sealing plate 1 on the sealing surface of main body 4, thus the medium in sealing load pipeline, makes the water in pressure piping not discharge through pressure relief opening.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a hydroturbine water intake main valve protective gear, it is characterized in that: comprise in it oil hydraulic cylinder being provided with piston and push rod thereof, and the main body to be connected and fixed with described oil hydraulic cylinder, cavity is provided with in described main body, this cavity is by being located at pressure relief vent in main body and pressure release entrance and ft connection, described pressure release entrance is provided with the pressure release sealing plate of this entrance of energy movable sealing, cylinder chamber body is separated into hydraulic pressure cavity and spring element chamber by described piston, described hydraulic pressure cavity is in communication with the outside by the two-position four way change valve be located on oil hydraulic cylinder, the spring element hindering described piston towards the movement of spring element chamber is provided with in described spring element chamber, described push rod to extend out to through described spring element chamber in the cavity in described main body and is connected and fixed with described pressure release sealing plate.
2. hydroturbine water intake main valve protective gear as claimed in claim 1, is characterized in that: described spring element is spring, and described spring shackle is located between described piston and main body around described push rod.
3. hydroturbine water intake main valve protective gear as claimed in claim 1, is characterized in that: described pressure release sealing plate is fixed on described push rod termination through sealing plate gland.
4. hydroturbine water intake main valve protective gear as claimed in claim 3, is characterized in that: described pressure release sealing plate and be also provided with between sealing plate gland and push rod and split annulus.
5. hydroturbine water intake main valve protective gear as claimed in claim 1, is characterized in that: between described push rod and main body, between oil hydraulic cylinder and main body, and be equipped with seal ring between piston and oil hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420350847.8U CN204062108U (en) | 2014-06-27 | 2014-06-27 | Hydroturbine water intake main valve protective gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420350847.8U CN204062108U (en) | 2014-06-27 | 2014-06-27 | Hydroturbine water intake main valve protective gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204062108U true CN204062108U (en) | 2014-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420350847.8U Expired - Fee Related CN204062108U (en) | 2014-06-27 | 2014-06-27 | Hydroturbine water intake main valve protective gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204062108U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019385A (en) * | 2018-01-17 | 2018-05-11 | 北京宇豪胜水利科技咨询有限公司 | A kind of split type large-scale hydraulic ram and startup method |
| CN110863535A (en) * | 2019-11-25 | 2020-03-06 | 吴文鑫 | A water flow pressure relief pipeline protector |
| CN112303293A (en) * | 2020-11-17 | 2021-02-02 | 自贡自高阀门有限公司 | Three-way fluid control valve |
| CN112998848A (en) * | 2021-01-26 | 2021-06-22 | 武汉时代阳光科技发展有限公司 | Circulating liquid cooling high-power red and blue spectrum therapeutic apparatus |
-
2014
- 2014-06-27 CN CN201420350847.8U patent/CN204062108U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019385A (en) * | 2018-01-17 | 2018-05-11 | 北京宇豪胜水利科技咨询有限公司 | A kind of split type large-scale hydraulic ram and startup method |
| CN110863535A (en) * | 2019-11-25 | 2020-03-06 | 吴文鑫 | A water flow pressure relief pipeline protector |
| CN112303293A (en) * | 2020-11-17 | 2021-02-02 | 自贡自高阀门有限公司 | Three-way fluid control valve |
| CN112303293B (en) * | 2020-11-17 | 2022-01-07 | 自贡自高阀门有限公司 | Three-way fluid control valve |
| CN112998848A (en) * | 2021-01-26 | 2021-06-22 | 武汉时代阳光科技发展有限公司 | Circulating liquid cooling high-power red and blue spectrum therapeutic apparatus |
| CN112998848B (en) * | 2021-01-26 | 2022-06-07 | 武汉时代阳光科技发展有限公司 | Circulating liquid cooling high-power red and blue spectrum therapeutic apparatus |
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| 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: 20141231 Termination date: 20150627 |
|
| EXPY | Termination of patent right or utility model |