CN2760347Y - Hydraulic dual seal ball valve for water turbine intake - Google Patents
Hydraulic dual seal ball valve for water turbine intake Download PDFInfo
- Publication number
- CN2760347Y CN2760347Y CN 200420076986 CN200420076986U CN2760347Y CN 2760347 Y CN2760347 Y CN 2760347Y CN 200420076986 CN200420076986 CN 200420076986 CN 200420076986 U CN200420076986 U CN 200420076986U CN 2760347 Y CN2760347 Y CN 2760347Y
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- China
- Prior art keywords
- water
- valve
- ball
- valve body
- sealing pair
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- Expired - Fee Related
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Abstract
The utility model relates to a double sealed ball valve for a hydroturbine water intake, which is composed of a valve body, a ball body, an operation sealing pair, an overhauling sealing pair, and an operating mechanism, wherein the operating mechanism is arranged outside the valve body, and is connected with the ball body through a valve shaft; the operation sealing pair is arranged at the water outtake end, and the overhauling sealing pair is arranged at the water intake end; a ball body metal sealing ring is connected with the ball body, and a metal water-stopping ball is movably connected with the valve body. A pressure water source is guided to both ends of each of a metal water-stopping ring by a high-pressure water guide pipe on the valve body of the utility model, the metal water-stopping rings of the operation sealing pair and the overhauling sealing pair move straightly in the valve body and contact or disengage with the ball body sealing ring through controlling the water intake and the water outtake directions of the pressure water source at both ends of the metal water-stopping rings, and the purpose that medium is cut off or switched on when the operating mechanism drives the valve shaft and the ball body to rotate and to be at an opening or a closing position in range of 90 DEG is obtained.
Description
One, technical field
The utility model relates to ball valve, specially refers to hydroturbine water intake ball valve.
Two, background technique
The hydroturbine water intake double-seal ball valve is installed on the penstock before the water wheels unit spiral case inlet transition section of maximum static head 200-1000 rice (even higher), and it mainly acts on and is:
1. close double-seal ball valve, block the water inlet of water wheels unit, be convenient to the maintenance of water turbine, be particularly suitable for supplying water to several units, when wherein a unit need overhaul,, do not influence the normal operation of other unit in order to block current as a water delivery house steward;
2. work as water wheels unit speed control system and break down, under the operating mode that generating unit speed flies to escape, moving water emergency cut-off guarantees unit safety;
3. when the working seal of water intake ball valve or shaft end seal etc. go wrong, the normal operation that does not need the emptying aqueduct and stop other unit can be overhauled the problem that occurs, conserve water resource and the standby time when reducing start.
The one-sided seal style of the many employings of existing hydroturbine water intake ball valve, poor sealing performance, sealing face are by erosion or damage, and the water wheels unit must be shut down maintenance; Other has part to adopt with deciding the hydroturbine water intake ball valve of seal style, and the sealing pair material is metal one engineering plastics, and valve opening moment is big; Under the operating mode that contains the silt medium, sealing pair very easily sassafras is hindered, and sealing pair is short working life.
Three, summary of the invention
The purpose of this utility model is to provide a kind of hydroturbine water intake double-seal ball valve of having taked dual metal hard-sealing structural type, it is that a kind of upstream at valve (feed-water end) is provided with metal maintenance sealing pair, (waterexit end) is provided with the working metal sealing pair in the downstream, easy processing, the ball valve of good seal performance.
The technical solution of the utility model realizes in the following way:
The utility model is made up of valve body (2), spheroid (3), working seal pair (4), maintenance sealing pair (5), operating device (7) etc., working seal pair (4) is arranged on A-A place, waterexit end, maintenance sealing pair (5) is arranged on feed-water end B-B place, operating device (7) is arranged on the outside of valve body (2), link to each other with spheroid (3) by valve shaft (1), it is characterized in that: spheroid metal o-ring (10) is connected on the spheroid (3), and metallic water stop ball (9) is actively socketed on the valve body (2).
Advantage of the present utility model is as follows:
1. because seal ring of the present utility model and spheroid are two parts that separate, and seal ring is connected on the spheroid, its easy processing, precision height, good seal performance simultaneously.
2. because another Sealing of the present utility model is actively socketed on the valve body, and left and right mobile back contact with seal ring on the spheroid or separate, makes the working seal of valve and check to seal input and withdraw from, and form strong sealing when being adjacent to seal ring.
Four, description of drawings
Fig. 1 is a plan view of the present utility model;
Fig. 2 is a side view of the present utility model;
Structural representation when Fig. 3 is a working seal subtask of the present utility model;
Structural representation when Fig. 4 removes for the utility model maintenance sealing pair.
Five, embodiment
Among Fig. 1-2, valve shaft (1), valve body (2), spheroid (3), locking device (8), working seal pair (4), maintenance sealing pair (5), sand discharge apparatus (6), operating device (7).
Operating device (7) is arranged on the outside of valve body (2), link to each other with spheroid (3) by valve shaft (1), operating device (7) drives valve shaft (1) and spheroid (3) rotates in 90 ° of scopes, reaches the purpose of blocking or connecting medium, in the ball valve closed position, can seal fully after the sealing of devoting oneself to work.
Among Fig. 3-4: valve body (2), spheroid (3), intake-outlet (C, D), metallic water stop ring (9), spheroid metal o-ring (10).
Working seal pair (4) and maintenance sealing pair (5) mainly are made up of two-part: be fixed on the spheroid (3) metal ball body sealed picture (10) and in valve body the metallic water stop ring (9) of moving linearly, on valve body, have intake-outlet (C and D).High pressure aqueduct on the valve body causes pressure water source at the two ends of metallic water stop ring 9, the water inlet direction of the pressure water source by control metallic water stop ring (9) two ends, make metallic water stop ring (9) moving linearly in valve body of working seal pair (4) and maintenance sealing pair (5), when the C mouth is intake, pressure water source promotion metallic water stop ring (9) moves with ball seal figure (10) to the valve center and contacts, be adjacent to and form seal pressure and reach sealing effect, at this moment, (D) mouth releases the water that is discharged from, working seal pair (4) and maintenance sealing pair (5) are devoted oneself to work, when the water inlet of (D) mouth, pressure water source promotion metallic water stop ring (9) moves with ball seal circle (10) to the valve two ends throws off, guarantee that operating device (7) drives valve shaft (1) and spheroid (3) is done to rotate in 90 ° of scopes in valve body, at this moment, (C) release the water that is discharged from, working seal pair (4) and the releasing work of maintenance sealing pair (5).
During proper functioning, only working seal pair (4) comes into operation, and when working seal or shaft end seal need overhaul, for the water in the not emptying penstock, does not influence the proper functioning of other unit simultaneously, and maintenance sealing pair (5) is devoted oneself to work.
Claims (1)
- The hydroturbine water intake double-seal ball valve that surges, form by valve body (2), spheroid (3), working seal pair (4), maintenance sealing pair (5), operating device (7) etc., working seal pair (4) is arranged on A-A place, waterexit end, maintenance sealing pair (5) is arranged on feed-water end B-B place, operating device (7) is arranged on the outside of valve body (2), link to each other with spheroid (3) by valve shaft (1), it is characterized in that: spheroid metal o-ring (10) is connected on the spheroid (3), and metallic water stop ball (9) is actively socketed on the valve body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420076986 CN2760347Y (en) | 2004-10-15 | 2004-10-15 | Hydraulic dual seal ball valve for water turbine intake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420076986 CN2760347Y (en) | 2004-10-15 | 2004-10-15 | Hydraulic dual seal ball valve for water turbine intake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2760347Y true CN2760347Y (en) | 2006-02-22 |
Family
ID=36082549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420076986 Expired - Fee Related CN2760347Y (en) | 2004-10-15 | 2004-10-15 | Hydraulic dual seal ball valve for water turbine intake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2760347Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859755A (en) * | 2017-11-08 | 2018-03-30 | 东方电气集团东方电机有限公司 | A kind of globe valve overhauls sealing control method |
| CN108343757A (en) * | 2018-04-03 | 2018-07-31 | 浙江精嘉阀门有限公司 | Hydraulic control band bypasses linkage ball valve |
-
2004
- 2004-10-15 CN CN 200420076986 patent/CN2760347Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859755A (en) * | 2017-11-08 | 2018-03-30 | 东方电气集团东方电机有限公司 | A kind of globe valve overhauls sealing control method |
| CN108343757A (en) * | 2018-04-03 | 2018-07-31 | 浙江精嘉阀门有限公司 | Hydraulic control band bypasses linkage ball valve |
| CN108343757B (en) * | 2018-04-03 | 2023-09-12 | 浙江精嘉阀门有限公司 | Hydraulic control by-pass linkage ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060222 Termination date: 20131015 |