CN105587888A - Valve seat structure of fixed ball valve - Google Patents
Valve seat structure of fixed ball valve Download PDFInfo
- Publication number
- CN105587888A CN105587888A CN201610149190.2A CN201610149190A CN105587888A CN 105587888 A CN105587888 A CN 105587888A CN 201610149190 A CN201610149190 A CN 201610149190A CN 105587888 A CN105587888 A CN 105587888A
- Authority
- CN
- China
- Prior art keywords
- valve seat
- valve
- bolt
- fixed ball
- cone
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0689—Packings between housing and plug
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
- F16K5/202—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug with conical surfaces
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a valve seat structure of a fixed ball valve. The valve seat structure comprises a valve seat assembled in a valve body. The end face, close to a ball body, of the valve seat is attached to the ball body in a sealing mode, the valve seat and the valve body are in sliding and sealing connection, and the end, far away from the ball body, of the valve seat is of a cone structure. Bolts which are in threaded connection with the valve body are arranged on the valve body, the bottoms of the bolts are of a cone structure, and the bottom cone structures of the bolts are pressed onto the cone structure of the valve seat in a matched mode. According to the valve seat structure of the fixed ball valve, the pressing bolts are arranged at the end, far away from the ball body, of the valve seat, and the ball body and the valve seat are made to form a cone pressing push structure, so that the attaching compact degree of the valve seat and the ball body is adjustable, and the problems of not compact attaching of the valve seat and the ball body and insufficient sealing specific pressure are solved. Meanwhile, the valve seat structure of the fixed ball valve further has the advantages of being simple in structure, convenient to assemble, good in sealing performance and long in service life.
Description
Technical field
The invention belongs to valve field, especially relate to the valve seat of fixed ball valve structure that a kind of reliability is high.
Background technology
The design of valve normally arranges spring in the behind of valve seat, presses by pretightning force and the ducted medium of springPower is adjacent to valve seat and spheroid, thereby reaches the object of sealing. Can by valve seat and the necessary seal pressure of spheroid in designCalculate the pretightning force size of spring, can make in theory valve seat fit tightly spheroid and obtain enough seal pressures. But realIn border, due to the reasons such as the quality of manufacture, rigging error and the spring of valve seat may cause valve seat and spheroid laminating not tightAnd the problem such as seal pressure deficiency, thereby cause valve to have in actual applications leakage.
Summary of the invention
The present invention provides a kind of valve seat of fixed ball valve structure, this structure energy for solving the technical problem existing in known technologyEnough make spheroid and valve seat fit tightly, can make the actual seal pressure of fixing ball valve reasonable, and simple in structure, assemblingConveniently, sealing is reliable.
The technical scheme that the present invention takes for the technical problem existing in solution known technology is: a kind of valve seat of fixed ball valveStructure, comprises the valve seat being assemblied in valve body, and described valve seat is near end face and the ball seal laminating of spheroid, described valve seatBe connected with described valve body slipper seal, described valve seat adopts cone structure away from the end of spheroid; On described valve body, be provided withThe bolt being threaded with it, the bottom of described bolt adopts cone structure, and bolt bottom cone structure is pressed in consistent mannerOn valve seat cone structure.
The cone angle of described bolt bottom cone structure is 12 °～24 °.
Described bolt is stitched and is connected by full weld with the outer surface of described valve body.
Described bolt has symmetrically arranged two, and two described bolts are along the same diametric(al) setting of described valve seat.
Between described valve seat and described valve body, be provided with sealing ring.
Described sealing ring is arranged in seal groove, and described seal groove is arranged on described valve seat, in the both sides of described sealing ringRespectively be provided with a back-up ring, described back-up ring is arranged in described seal groove.
Advantage and good effect that the present invention has are: away from the end of spheroid, hold-down bolt is set at valve seat by adopting,And make the two form the structure that conical surface compression advances, and make the laminating tightness degree of valve seat and spheroid adjustable, can solve valve seatThe problem not tight with spheroid laminating and seal pressure is not enough, the present invention simultaneously also has simple in structure, easy to assembly, closeThe advantage that sealing property is good, the life-span is long.
Brief description of the drawings
Fig. 1 is the structural representation that the present invention applies;
Fig. 2 is the enlarged drawing on Fig. 1 top;
Fig. 3 is bolt arrangement schematic diagram of the present invention.
In figure: 1, valve body; 2, bolt; 3, Sealing shield ring; 4, sealing ring; 5, valve seat; 6, spheroid; 7, full weldSeam.
Detailed description of the invention
For further understanding summary of the invention of the present invention, Characteristic, hereby exemplify following examples, and coordinate accompanying drawingBe described in detail as follows:
Refer to Fig. 1～Fig. 3, a kind of valve seat of fixed ball valve structure, comprises the valve seat 5 being assemblied in valve body 1, described valveSeat 5 end faces near spheroid and spheroid 6 sealing laminatings, described valve seat 5 is connected with described valve body 6 slipper seals, described inValve seat 5 adopts cone structure away from the end of spheroid; On described valve body 1, be provided with the bolt 2 being threaded with it, described inThe bottom of bolt 2 adopts cone structure, and bolt bottom cone structure is pressed on valve seat cone structure in consistent manner. When tighteningWhen bolt, bolt bottom cone structure compresses valve seat cone structure, makes valve seat obtain the power to spheroid direction, valve seat laminatingAnd press spheroid, adjusting bolt can make to obtain between valve seat and spheroid rational seal pressure.
In the present embodiment, the cone angle of described bolt bottom cone structure is 12 °～24 °, bolt and valve seat one end in contact,Can self-locking after tighting a bolt, and cone angle can make bolt entire length less within the scope of this, can improve the rigidity of bolt.Described bolt 2 stitches 7 with the outer surface of described valve body 1 by full weld and is connected, and full weld seam 7 can not exist pore, crackle etc.Defect, to ensure sealing. Full weld seam 7 can make bolt 2 be sealedly connected on valve body 1. Described bolt 2 has symmetry to establishPut two, two described bolts 2 are along the same diametric(al) setting of described valve seat 5. Regulate two bolts, can make valveSeat 5 thrust two lateral balances that are subject to spheroid direction, can avoid stuck between valve seat 5 and valve body 1, produce valve seat andThe problem of ball seal face seal pressure deficiency. Between described valve seat 5 and described valve body 1, be provided with sealing ring 4. Described closeSeal 4 is arranged in seal groove, and described seal groove is arranged on described valve seat 5, respectively establishes in the both sides of described sealing ring 4Have a back-up ring 3, described back-up ring 3 is arranged in described seal groove. 2 make valve seat 5 move and execute to spheroid 6 when tighting a boltWhen pressure, the existence of back-up ring 3 can make sealing ring be not easy distortion, can improve sealing reliability.
When assembling, first two bolts assemblies are entered to valve body, one end of bolt slightly exceeds valve inner and a bit stops tightening. WillSealing ring and both sides back-up ring fit on valve seat thereof, then valve seat is fitted into valve body, make cone structure and the bolt bottom of valve seatCone structure laminating. Treat that valve assembling is complete, slowly tighten two bolts, make valve seat and spheroid laminating simultaneously.
When delivery test, regulate the tightness of two bolts simultaneously, to valve without leak finish. Again by outside bolt and valve bodyJoint, surface surrounding full weld, detects full weld seam and whether has defect, as nothing, and can factory inspection and acceptance.
Although by reference to the accompanying drawings the preferred embodiments of the present invention are described above, the present invention is not limited to above-mentionedDetailed description of the invention, above-mentioned detailed description of the invention is only schematically, is not restrictive, this area generalLogical technical staff, under enlightenment of the present invention, is not departing from the scope situation that aim of the present invention and claim protect,Can also make a lot of forms, within these all belong to protection scope of the present invention.
Claims (6)
1. a valve seat of fixed ball valve structure, comprises the valve seat being assemblied in valve body, described valve seat near the end face of spheroid withBall seal laminating, is characterized in that, described valve seat is connected with described valve body slipper seal, and described valve seat is away from spheroidEnd adopts cone structure; On described valve body, be provided with the bolt being threaded with it, the bottom of described bolt adopts the conical surfaceStructure, bolt bottom cone structure is pressed on valve seat cone structure in consistent manner.
2. valve seat of fixed ball valve structure according to claim 1, is characterized in that, described bolt bottom cone structureCone angle be 12 °～24 °.
3. valve seat of fixed ball valve structure according to claim 1, is characterized in that, described bolt and described valve bodyOuter surface stitches connection by full weld.
4. valve seat of fixed ball valve structure according to claim 1, is characterized in that, described bolt has symmetrically arrangedTwo, two described bolts are along the same diametric(al) setting of described valve seat.
5. valve seat of fixed ball valve structure according to claim 1, is characterized in that, at described valve seat and described valve bodyBetween be provided with sealing ring.
6. valve seat of fixed ball valve structure according to claim 5, is characterized in that, described sealing ring is arranged on sealingIn groove, described seal groove is arranged on described valve seat, is respectively provided with a back-up ring in the both sides of described sealing ring, described back-up ring peaceBe contained in described seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610149190.2A CN105587888A (en) | 2016-03-15 | 2016-03-15 | Valve seat structure of fixed ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610149190.2A CN105587888A (en) | 2016-03-15 | 2016-03-15 | Valve seat structure of fixed ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105587888A true CN105587888A (en) | 2016-05-18 |
Family
ID=55927688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610149190.2A Pending CN105587888A (en) | 2016-03-15 | 2016-03-15 | Valve seat structure of fixed ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105587888A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577920A (en) * | 2020-04-30 | 2020-08-25 | 方正阀门集团股份有限公司 | High-temperature hard-sealing fixed ball valve |
| CN116608282A (en) * | 2023-04-26 | 2023-08-18 | 替科斯科技集团丽水流体设备有限公司 | C-shaped ball valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5752690A (en) * | 1995-10-25 | 1998-05-19 | Argus Machine Co., Ltd. | Threaded coupling and pig injector valve |
| CN102478116A (en) * | 2010-11-27 | 2012-05-30 | 王建华 | Upper ball valve |
| CN205064910U (en) * | 2015-10-23 | 2016-03-02 | 方正阀门集团有限公司 | Upper assembling type metal ball valve sealed firmly |
| CN205423918U (en) * | 2016-03-15 | 2016-08-03 | 天津大学 | Bolt manner fixes ball valve seating structure |
-
2016
- 2016-03-15 CN CN201610149190.2A patent/CN105587888A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5752690A (en) * | 1995-10-25 | 1998-05-19 | Argus Machine Co., Ltd. | Threaded coupling and pig injector valve |
| CN102478116A (en) * | 2010-11-27 | 2012-05-30 | 王建华 | Upper ball valve |
| CN205064910U (en) * | 2015-10-23 | 2016-03-02 | 方正阀门集团有限公司 | Upper assembling type metal ball valve sealed firmly |
| CN205423918U (en) * | 2016-03-15 | 2016-08-03 | 天津大学 | Bolt manner fixes ball valve seating structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577920A (en) * | 2020-04-30 | 2020-08-25 | 方正阀门集团股份有限公司 | High-temperature hard-sealing fixed ball valve |
| CN116608282A (en) * | 2023-04-26 | 2023-08-18 | 替科斯科技集团丽水流体设备有限公司 | C-shaped ball valve |
| CN116608282B (en) * | 2023-04-26 | 2023-10-20 | 替科斯科技集团丽水流体设备有限公司 | C-shaped ball valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160518 |