CN202946706U - Main steam gate valve with rotary-inserting-type parallel double gate discs - Google Patents
Main steam gate valve with rotary-inserting-type parallel double gate discs Download PDFInfo
- Publication number
- CN202946706U CN202946706U CN 201220163592 CN201220163592U CN202946706U CN 202946706 U CN202946706 U CN 202946706U CN 201220163592 CN201220163592 CN 201220163592 CN 201220163592 U CN201220163592 U CN 201220163592U CN 202946706 U CN202946706 U CN 202946706U
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- China
- Prior art keywords
- valve
- gate
- flashboard
- valve rod
- gate disc
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- Expired - Fee Related
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Abstract
The utility model relates to a main steam gate valve with rotary-inserting-type parallel double gate discs. The main steam gate valve comprises a valve body, a valve cover, a valve rod support, a valve rod, a valve seat and a gate disc assembly, wherein sealing faces of the valve seat are parallel sealing faces; the gate disc assembly comprises a gate disc rack, a left gate disc and a right gate disc; two side faces of the gate disc rack are connected with the rotating-inserting-type left gate disc and right gate disc; and reset springs are disposed between the left gate disc and the right gate disc, and enables the left gate disc and the right gate disc to automatically abut on the sealing faces of the valve seat. Sealing of flow passages is realized when the right gate disc abuts on the sealing face of the valve seat under the fluid pressure. No axial pressing force of the valve rod is needed for pressing the gate discs against the sealing faces, thereby reducing electrodynamic mechanism on-off force for driving the valve rod, and correspondingly reducing costs. Guiding of the gate disc assembly is realized in a coordination manner by a guide rod on the valve rod and a guide groove on the valve rod support, with no need for welding guide ribs in the valve body; and the guide rod can also be used as a stroke pointer so as to avoid false operation .
Description
Technical field
The utility model relates to a kind of steam gate valve, particularly a kind ofly is difficult for the rotary plug-in type double disc parallel seat steam-outlet valve stuck, that hoisting capacity is little.
Background technique
The high temperature high pressure large caliber electric gate valve is mainly used in major steam line system of power plant and main feed system, is used for the opening and closing of pilot line, realizes the controlled operation of unit.Its quality and reliability is maintaining the safety and efficiency of unit, is power plant's critical valves equipment.
The open-shut device of gate valve is flashboard, flashboard for sluice valve commonly used is the wedge shape flashboard, and no matter the wedge-type flashboard is wedge-type double-flashboard or flexible wedge gate structural design, all may be because valve rod expands with heat and contract with cold under the condition of high temperature, flashboard is expanded on stuck and valve seat, can't open and close; Wedge-type design flashboard must produce axial force by valve rod compresses flashboard, produce seal pressure, make valve closing, thereby valve rod when opening and closing axial force very large, must select high-power Denso actuating valve door to open and close, must try journey and moment numerical value by precision regulating during debugging, valve is is reliably opened and closed, make the unit manufacture cost increase.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of rotary plug-in type double disc parallel seat steam-outlet valve stuck, that hoisting capacity is little that is difficult for.
for solving the problems of the technologies described above, the technical solution of the utility model is: a kind of rotary plug-in type double disc parallel seat steam-outlet valve, comprise valve body, valve gap, the valve rod support, valve rod and valve seat, the valve body top is equipped with valve gap, be connected with the valve rod support on described valve gap, body cavity is provided with valve seat, body cavity is stretched in described valve rod lower end, its innovative point is: the sealing surface of described valve seat is the parallel sealing face, described valve rod lower end is connected with the flashboard assembly that coordinates with sealing surface of seat, described flashboard assembly comprises the flashboard frame, left flashboard and right flashboard, described flashboard frame bi-side are connected with a rotary plug-in type left side, right flashboard, a described left side, arrange a left side between right flashboard, right flashboard props up the Returnning spring of valve seat, have the guiding groove that extends along the valve rod axis direction on described valve rod support, be provided with the guide rod fixing with valve rod in described guiding groove, described guiding groove side is provided with opening indication dial.
The utility model has the advantage of: left and right flashboard adopts the rotary plug-in type structure to be connected with the flashboard frame, between left and right flashboard, Returnning spring is set, and Returnning spring makes left and right flashboard automatically and the parallel sealing face of valve seat is fitted.During sealing, be close to sealing surface of seat at hydrodynamic pressure bottom right flashboard, realize the sealing of runner.Need not by the axial pressing force of valve rod, flashboard and sealing surface of seat to be fitted tightly, reduce the motor drive mechanism hoisting capacity of actuate valve stem, corresponding Cost reduction.
The guiding of flashboard assembly coordinates realization by the guide rod on valve rod with guiding groove on the valve rod support, need not to weld guiding rib in valve body, the double stroke pointer of doing of guide rod simultaneously, and the indication valve opening guarantees that valve reliably opens or close, and avoids misoperation,
Description of drawings
Fig. 1 is that the utility model is inserted formula double disc parallel seat steam-outlet valve structural representation.
Fig. 2 is along A to view in Fig. 1.
Embodiment
As shown in Figure 1, 2, comprise valve body 1, valve seat 2, valve rod 3, valve rod support 4, flashboard frame 5, left flashboard 6, right flashboard 7, Returnning spring, guiding groove 9, guide rod 10.
Be provided with valve seat 2 in above-mentioned valve body 1, the sealing surface of this valve seat 2 is the parallel sealing face.Valve body 1 top connects valve gap 11, is provided for installing the valve rod support 4 of valve rod 3 on valve gap 11.
Valve body 1 inner chamber is stretched in the lower end of valve rod 3, the lower end of valve rod 3 is connected with the flashboard assembly that coordinates with sealing surface of seat, flashboard assembly comprises flashboard frame 5, left flashboard 6 and right flashboard 7, flashboard frame 5 tops are threaded with valve rod 3, flashboard frame 5 bi-side are connected with the left flashboard 6 of rotary plug-in type, right flashboard 7, this rotary plug-in type structure is existing the application in the wedge shape flashboard of routine, repeats no more here.Between flashboard frame 5 and valve rod 3, clamping plate 12 are set, it is clamped on flashboard frame 7 by valve rod 3, and the lower end of clamping plate 12 arranges projection, and this projection embeds in the positioning hole of left flashboard 6 and right flashboard 7 upper-end surfaces.Be provided with Returnning spring between left flashboard 6, right flashboard 7, this Returnning spring props up left flashboard 6, right flashboard 7 in the parallel sealing face of valve seat 2.For preventing left flashboard 6, right flashboard 7
Have the guiding groove 9 that extends along valve rod 3 axial directions on valve rod support 4, be provided with the guide rod 10 fixing with valve rod 3 in guiding groove 9, guiding groove 9 sides are provided with opening indication dial.
Working principle: descending by motor drive mechanism actuate valve stem 3, flashboard assembly moves down thereupon, and Returnning spring makes left flashboard 6, right flashboard 7 automatically and the parallel sealing face of valve seat 2 is fitted.During sealing, be close to valve seat 2 sealing surfaces at hydrodynamic pressure bottom right flashboard 7, realize the sealing of runner.Need not by the axial pressing force of valve rod, flashboard and sealing surface of seat to be fitted tightly.
Claims (1)
1. rotary plug-in type double disc parallel seat steam-outlet valve, comprise valve body, valve gap, the valve rod support, valve rod and valve seat, the valve body top is equipped with valve gap, be connected with the valve rod support on described valve gap, body cavity is provided with valve seat, body cavity is stretched in described valve rod lower end, it is characterized in that: the sealing surface of described valve seat is the parallel sealing face, described valve rod lower end is connected with the flashboard assembly that coordinates with sealing surface of seat, described flashboard assembly comprises the flashboard frame, left flashboard and right flashboard, described flashboard frame bi-side are connected with a rotary plug-in type left side, right flashboard, a described left side, arrange a left side between right flashboard, right flashboard props up the Returnning spring of valve seat, have the guiding groove that extends along the valve rod axis direction on described valve rod support, be provided with the guide rod fixing with valve rod in described guiding groove, described guiding groove side is provided with opening indication dial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220163592 CN202946706U (en) | 2012-04-18 | 2012-04-18 | Main steam gate valve with rotary-inserting-type parallel double gate discs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220163592 CN202946706U (en) | 2012-04-18 | 2012-04-18 | Main steam gate valve with rotary-inserting-type parallel double gate discs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202946706U true CN202946706U (en) | 2013-05-22 |
Family
ID=48422408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220163592 Expired - Fee Related CN202946706U (en) | 2012-04-18 | 2012-04-18 | Main steam gate valve with rotary-inserting-type parallel double gate discs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202946706U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832672A (en) * | 2015-05-12 | 2015-08-12 | 开封高中压阀门有限公司 | Gate valve with parallel double-disc structure |
| CN105587879A (en) * | 2016-03-14 | 2016-05-18 | 西诺威阀门控制（苏州）有限公司 | Novel valve clack structure |
| CN108278373A (en) * | 2018-03-26 | 2018-07-13 | 吴江市莘塔前进五金厂 | A kind of high intensity formula adjusting flap arrangement |
| CN108757972A (en) * | 2018-07-27 | 2018-11-06 | 华夏阀门有限公司 | Adjustable mechanical limits Wedge Gate Valves and adjustment method |
-
2012
- 2012-04-18 CN CN 201220163592 patent/CN202946706U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832672A (en) * | 2015-05-12 | 2015-08-12 | 开封高中压阀门有限公司 | Gate valve with parallel double-disc structure |
| CN105587879A (en) * | 2016-03-14 | 2016-05-18 | 西诺威阀门控制（苏州）有限公司 | Novel valve clack structure |
| CN108278373A (en) * | 2018-03-26 | 2018-07-13 | 吴江市莘塔前进五金厂 | A kind of high intensity formula adjusting flap arrangement |
| CN108757972A (en) * | 2018-07-27 | 2018-11-06 | 华夏阀门有限公司 | Adjustable mechanical limits Wedge Gate Valves and adjustment method |
| CN108757972B (en) * | 2018-07-27 | 2023-12-05 | 华夏阀门有限公司 | Adjustable mechanical limit wedge gate valve debugging method |
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Legal Events
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20200418 |