CN204985895U - Automatic exhaust steam valve of spring water seal - Google Patents
Automatic exhaust steam valve of spring water seal Download PDFInfo
- Publication number
- CN204985895U CN204985895U CN201520731250.2U CN201520731250U CN204985895U CN 204985895 U CN204985895 U CN 204985895U CN 201520731250 U CN201520731250 U CN 201520731250U CN 204985895 U CN204985895 U CN 204985895U
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- valve
- steam
- valve disc
- spring
- slide
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- Expired - Fee Related
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Abstract
The utility model relates to an automatic exhaust steam valve of spring water seal. The purpose is that the automatic exhaust steam valve of spring water seal who provides has simple structure, seals characteristics effectual, that maintain conveniently, be applicable to the big discharge capacity occasion of condensing system. Technical scheme is: automatic exhaust steam valve of spring water seal, including the valve body, set up valve mechanism in the valve body, the mechanism is confirmed to the stroke that is used for opening valve mechanism, be used for set pressure's pressure adjustable mechanism, the valve body left and right sides has been made the steam inlet respectively and has been gone out the steam ports, and the valve body inner chamber passes through the baffle partition and forms the admission chamber and play vapour chamber of putting through the steam inlet respectively and going out the steam ports, its characterized in that: in the valve mechanism, the valve disc seal receptacle sets up on the baffle, and the guide arm can be along the vertical slip of uide bushing, fixes and can fix a position on the valve disc seal receptacle at the valve disc of guide arm upper end with opening and shutting, and the valve disc forms the valve port that is used for control steam dump volume with the cooperation of valve disc seal receptacle, and downward top of spring that sets up above the valve disc pushes away the valve disc with the closed valve mouth.
Description
Technical field
The utility model relates to a kind of superpressure tapping equipment for steam turbine condensing system, specifically a kind of exhaust steam valve
Background technique
Exhaust steam valve is the superpressure tapping equipment of steam turbine condensing system, can ensure that vapour condenser normally works when vacuum state, and automatically open when exceeding setting pressure, guarantee equipment security of operation.
As shown in Figure 3, stroke confirming mechanism 9 in existing exhaust steam valve is arranged on valve body lower portion (being positioned at the inlet side of body cavity), not only cause structure comparatively complicated, easily reveal in running, and need higher machining accuracy when producing, also cannot installed load instrument to valve setpoint pressure correction.
Model utility content
The purpose of this utility model overcomes the deficiency in above-mentioned background technology, provides that a kind of structure is simple, good sealing effect, easy to maintenance, the spring water sealed automatic exhaust steam valve that is applicable to condensing system huge discharge occasion.
The technical solution of the utility model is: spring water sealed automatic exhaust steam valve, comprise valve body, the valve mechanism be arranged in valve body, for opening the stroke confirming mechanism of valve mechanism, the pressure adjustable mechanism for setting pressure; The described valve body left and right sides is shaped with steam inlet and steam ouput respectively, and body cavity forms the admission chamber and steam output chamber of connecting steam inlet and steam ouput respectively by baffle for separating; It is characterized in that:
In described valve mechanism, valve disc seal seat is arranged on dividing plate, guide rod vertically can slide along guide sleeve, the valve disc being fixed on guide rod upper end is positioned on valve disc seal seat opening or closing, valve disc coordinates the valve port formed for controlling discharge of steam amount with valve disc seal seat, be arranged on spring downward pushing tow valve disc above valve disc with closed valve port;
Described stroke confirming mechanism is arranged on valve body top, comprises the draw-bar seat be arranged on valve body valve gap, is vertically fixed on hollow slide on valve disc, top and draw-bar seat screw-thread fit and lower vertical stretches into the pull bar in slide inner chamber; The boss of described pull bar lower end can vertically be positioned in slide inner chamber slidably, and described slide top is provided with the limited cover risen for limiting boss; Described spring housing is contained on pull bar and slide.
Described pressure adjustable mechanism comprise setting up and down and respectively with spring seat and the positioning ring of slide outer circumferential face thread engagement; The top, lower end of described spring is pressed on spring seat.
Described guide rod, pull bar, slide, guide sleeve are coaxially arranged.
Described guide sleeve is positioned at below dividing plate by some struts.
Described pull bar protrudes upward valve gap, and a handwheel is fixed on pull bar top.
The beneficial effects of the utility model are:
1, horizontal arrangement, stroke confirms that device is easy to the manufacture of large bore valves, installation and maintenance on valve body top, and structure is more reasonable, and maximum caliber can reach the DN900 of HEI standard-required; Fill up valve maximum caliber in the past and only arrive the blank of DN600.2, the utility model adopts position adjustable spring seat, and setting pressure is adjustable, and valve disc total load can be surveyed; 3, valve disc seal seat fixedly make the sealing configuration between itself and valve disc more simple and reliable, be easy to manufacture and the maintenance of large bore valves.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the utility model embodiment.
Fig. 2 is the main TV structure schematic diagram of prior art.
Fig. 3 is the structure for amplifying schematic diagram in A portion in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing illustrated embodiment, the utility model is described in further detail, but the utility model is not limited to following examples.
As shown in Figure 1, spring water sealed automatic exhaust steam valve, comprises valve body, valve mechanism, stroke confirming mechanism, pressure adjustable mechanism.
The left and right sides of described valve body is shaped with steam inlet 11 and steam ouput 12 respectively, and body top arranges valve gap 15, and body cavity arranges dividing plate 16; Body cavity is separated to form the admission chamber 13 connecting steam inlet and the steam output chamber 14 connecting steam ouput by this dividing plate.
Described valve mechanism comprises valve disc seal seat 21, is positioned at valve disc 22 on valve disc seal seat, guide sleeve 31, the guide rod 32 that vertically can slide along guide sleeve opening or closing, is arranged on spring 4 (spring housing is contained on pull bar and slide) above valve disc; Described valve disc seal seat is horizontally fixed on dividing plate, guide sleeve is positioned at below valve disc seal seat by some struts 33, valve disc is fixed on guide rod upper end, valve disc and valve disc seal seat complement each other to form connect admission chamber and steam output chamber valve port to control discharge of steam amount; The downward pushing tow valve disc of spring closes to make valve port.
The pull bar 5 that described stroke confirming mechanism comprises the draw-bar seat 52 be arranged on valve body valve gap, is vertically fixed on the hollow slide 6 at valve disc top, vertically arranges; Fix with handwheel 53 after the top of described pull bar protrudes upward valve gap, the top of pull bar and draw-bar seat screw-thread fit, the lower vertical of pull bar stretches in slide inner chamber downwards; The lower end of described pull bar is shaped with boss 51, and this boss is positioned in slide inner chamber slidably, and slide top is provided with the limited cover 61 risen for limiting boss.
Described pressure adjustable mechanism comprises the spring seat 71 and positioning ring 72 arranged up and down, spring seat 71 and positioning ring 72 all with the thread engagement on slide outer peripheral surface.
In addition, described guide rod, pull bar, slide, wire sleeve are coaxially arranged.
Under normal state, valve disc is pressed on valve disc seal seat by the common load that spring, valve disc and barometric pressure produce, and maintains sealing, also can inject water of condensation to improve the sealability of sealing surface simultaneously in valve by the seal ring on valve disc seal seat; When system overpressure, valve disc is opened valve port by upwards jack-up, and the input steam of steam inlet is discharged from steam-expelling port, the height that valve disc is opened determines the discharge of steam amount of valve.
When needing to open valve port, rotate handwheel and rise pull bar, pull bar drives slide and valve disc to rise by the cooperation of boss and limited cover again; The trip confirm device be positioned at valve top, simple structure and be easy to manufacture and safeguard, the superpressure tapping equipment of heavy caliber (more than DN600) runs also reliably safer; Guide rod simultaneously below valve disc can arrange load instrument, checks valve disc total load (setting pressure) time convenient for assembly.
When regulating setting pressure, need first to unclamp positioning ring, then rotation spring seat Regulation spring decrement, then rotating position ring is to lock spring seat, setting pressure can adjust within the scope of 0.007 ~ 0.01MPaG.
Claims (5)
1. spring water sealed automatic exhaust steam valve, comprise valve body, the valve mechanism be arranged in valve body, for opening the stroke confirming mechanism of valve mechanism, the pressure adjustable mechanism for setting pressure; The described valve body left and right sides is shaped with steam inlet (11) and steam ouput (12) respectively, and body cavity is separated to form the admission chamber (13) and steam output chamber (14) of connecting steam inlet and steam ouput respectively by dividing plate (16); It is characterized in that:
In described valve mechanism, valve disc seal seat (21) is arranged on dividing plate, guide rod (32) vertically can slide along guide sleeve (31), the valve disc (22) being fixed on guide rod upper end is positioned on valve disc seal seat opening or closing, valve disc coordinates the valve port formed for controlling discharge of steam amount with valve disc seal seat, be arranged on spring (4) above valve disc downwards pushing tow valve disc with closed valve port;
Described stroke confirming mechanism is arranged on valve body top, comprises the draw-bar seat (52) be arranged on valve body valve gap, is vertically fixed on hollow slide (6) on valve disc, top and draw-bar seat screw-thread fit and lower vertical stretches into the pull bar (5) in slide inner chamber; The boss (51) of described pull bar lower end can vertically be positioned in slide inner chamber slidably, and described slide top is provided with the limited cover (61) risen for limiting boss; Described spring housing is contained on pull bar and slide.
2. spring water sealed automatic exhaust steam valve according to claim 1, is characterized in that: described pressure adjustable mechanism comprise setting up and down and respectively with the spring seat (71) of slide outer circumferential face thread engagement and positioning ring (72); The top, lower end of described spring is pressed on spring seat.
3. spring water sealed automatic exhaust steam valve according to claim 2, is characterized in that: described guide rod, pull bar, slide, guide sleeve are coaxially arranged.
4. spring water sealed automatic exhaust steam valve according to claim 3, is characterized in that: described guide sleeve is positioned at below dividing plate by some struts (33).
5. spring water sealed automatic exhaust steam valve according to claim 4, is characterized in that: described pull bar protrudes upward valve gap, a handwheel (53) is fixed on pull bar top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520731250.2U CN204985895U (en) | 2015-09-21 | 2015-09-21 | Automatic exhaust steam valve of spring water seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520731250.2U CN204985895U (en) | 2015-09-21 | 2015-09-21 | Automatic exhaust steam valve of spring water seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204985895U true CN204985895U (en) | 2016-01-20 |
Family
ID=55120263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520731250.2U Expired - Fee Related CN204985895U (en) | 2015-09-21 | 2015-09-21 | Automatic exhaust steam valve of spring water seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204985895U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113814A (en) * | 2018-08-30 | 2019-01-01 | 华电电力科学研究院有限公司 | A kind of low energy damages efficient advanced formula turbine thermoelectricity transmission system and its working method |
| CN112392997A (en) * | 2020-11-17 | 2021-02-23 | 连云港佑丰电力设备有限公司 | Horizontal water-sealed atmospheric safety valve |
-
2015
- 2015-09-21 CN CN201520731250.2U patent/CN204985895U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113814A (en) * | 2018-08-30 | 2019-01-01 | 华电电力科学研究院有限公司 | A kind of low energy damages efficient advanced formula turbine thermoelectricity transmission system and its working method |
| CN109113814B (en) * | 2018-08-30 | 2023-12-05 | 华电电力科学研究院有限公司 | Low-energy-loss efficient step-entering turbine thermal power transmission system and working method thereof |
| CN112392997A (en) * | 2020-11-17 | 2021-02-23 | 连云港佑丰电力设备有限公司 | Horizontal water-sealed atmospheric safety valve |
| CN112392997B (en) * | 2020-11-17 | 2022-01-04 | 连云港佑丰电力设备有限公司 | Horizontal water-sealed atmospheric safety valve |
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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 |
Granted publication date: 20160120 Termination date: 20210921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |