CN202171121U - Capsule pilot-operated type steam drain valve - Google Patents
Capsule pilot-operated type steam drain valve Download PDFInfo
- Publication number
- CN202171121U CN202171121U CN2011202771231U CN201120277123U CN202171121U CN 202171121 U CN202171121 U CN 202171121U CN 2011202771231 U CN2011202771231 U CN 2011202771231U CN 201120277123 U CN201120277123 U CN 201120277123U CN 202171121 U CN202171121 U CN 202171121U
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- valve
- bellows
- pilot
- piston
- main valve
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Abstract
The utility model discloses a capsule pilot-operated type steam drain valve which relates to the steam drain valve. The utility model provides the capsule pilot-operated type steam drain valve which has a more reasonable structure, more stable performance and long service life and is simple and convenient to maintain. The capsule pilot-operated type steam drain valve is provided with a capsule pilot-operated type valve, an upper valve cap, a lower valve cap, a piston composite member, a valve body, a main valve, a lower filter screen and a sewage discharge plug, wherein the capsule pilot-operated type valve is arranged at the upper part of the valve body, the piston composite member and the main valve are arranged at the middle of the valve body, the upper valve cap is connected with the upper part of the valve body, the lower valve cap is connected with the lower part of the valve body, a straight way externally connected flange is arranged at the left and the right of the valve body, and the lower filter screen is arranged at the lower part of the valve body; the capsule pilot-operated type valve is provided with a capsule, an upper spring, a pilot-operated valve seat and a pilot-operated valve plug; the piston composite member is provided with a piston body, a piston, a spring and a pressure-relieving hole; the main valve is provided with a main valve seat, a main valve plug and a main valve rod; and the capsule is arranged in a pilot-operated valve cavity, the upper spring is sleeved in a boss on the upper end surface of the capsule, and the pilot-operated valve seat is tightly fixed in the pilot-operated valve cavity on the upper valve cap.
Description
Technical field
The utility model relates to a kind of Automatic steam trap Trap, especially relates to a kind of bellows pilot-operated type steam trap valve.
Background technique
The adjustable pilot-operated super large discharge Automatic steam trap Trap of existing bimetal, parts such as main pilot valve assembly parts by bimetal or wax formula, adjusting cap, pilot valve valve gap, piston, piston sleeve, main valve bottom are formed.Its working principle is: control main valve with bimetal or the hot static(al) component assembly of wax formula as pilot valve; When being full of steam in the valve pocket; Bimetal or La Shire static(al) component assembly are in the hot environment and expand; Pilot valve cuts out, and main valve then also is in closed condition owing to the acting in conjunction of medium power and spring force, thereby plays the effect that stops steam to be discharged; When be full of in the valve pocket be cool air the time, hot static(al) element then shrinks pilot valve is opened, cool air just can be discharged via the aperture on pilot valve, the piston, thereby plays the effect of emptying gas.When being cold condensate in the valve pocket; Because the temperature of condensed water is lower than the operating temperature of the hot static(al) component assembly of bimetal; At this moment pilot valve can be opened draining, and condensed water flows into the main valve piston epicoele through the pilot valve valve seat orifice, because the sectional area of piston is much larger than the sectional area of main valve valve seat; Piston and valve core of main valve assembly receive to make a concerted effort downwards, then main valve open draining; When draining finished, high-temperature steam got into pilot valve, and pilot valve is closed.On piston, be designed with pressure release buffering aperture; When main valve is closed; The pressure of piston upper chamber can not discharge rapidly, and promptly main valve can not closed rapidly, thereby has avoided clashing of valve core of main valve and valve seat; Improved the working life of sealing surface, prevented effectively that main valve from closing to overrun and caused pipeline vibration.
The adjustable pilot-operated super large discharge Automatic steam trap Trap of existing bimetal, the bimetal of its pilot valve adopts the structure of circular plate type, and the power of picking that the circular plate type bimetallic strip produces under temperature action is the straight line of certain slope, differs greatly with the saturation temperature curve; Its shortcoming is the state of devoting oneself to work successively that can not divide into groups, and makes bimetallic element overall characteristic and saturation temperature characteristic curve consistent; Because its characteristic line is the straight line with certain slope; Bigger with saturated vapour curve difference; Therefore adaptability is relatively poor, the sensitivity that after once adjusting, can only on an operation point, show, and can not in its whole operating ranges, keep this sensitivity; Change like working pressure, then must regulate correction once more.Use need frequently be adjusted with the temperature and the variation in pressure of operating mode on actual conditions like this, could satisfy working condition requirement, thereby has influenced the performance of Automatic steam trap Trap.
Summary of the invention
The purpose of the utility model provides the bellows pilot-operated type steam trap valve that a kind of structure is reasonable, performance is stable, maintenance is easier, working life is long.
The utility model is provided with bellows pilot valve, bonnet, bottom flange, piston assembly, valve body, main valve, following filter screen and blowdown plug;
Said bellows pilot valve is located at valve body top, and piston assembly and main valve are located at the valve body middle part, and bonnet is connected with valve body top, and bottom flange is connected with valve body lower portion, and straight-through external flange is set about valve body, and following filter screen is located at valve body lower portion;
Said bellows pilot valve is provided with bellows, upper spring, guide's valve seat and guide's spool; Said piston assembly is provided with piston body, piston, spring and relief hole; Said main valve is provided with main valve seat, main valve plug and main valve stem;
Said bellows is installed in guide's valve pocket, and upper spring is inserted in the boss of bellows upper-end surface, and guide's valve seat is fastened in the guide's valve pocket on the bonnet;
Said piston body vertically is installed on valve body top, and piston body is connected with bonnet; Spring is placed in the piston body chamber and piston lower end boss, and piston is installed in the piston body, and piston matches with the piston body endoporus, and can slide to axial;
Said main valve seat bottom is provided with guide ring; Said guide ring and main valve seat are connected as a single entity, and main valve seat is installed on the valve body, and main valve plug and main valve stem are connected as a single entity and are installed in the main valve seat; Main valve stem is inserted in the spring endoporus of piston assembly, and main valve stem is connected the piston upper end;
Said down filter screen is located in the valve body lower portion valve pocket, and following filter screen is installed in outside the main valve seat hole on the lower convex platform and bottom flange;
Said blowdown plug is installed in the pollutant exhaust hole of valve body.
Said bellows is provided with bellows loam cake, bellows lower cover, limiting board and diaphragm, and bellows loam cake and bellows lower cover cover, and limiting board is located at the inboard of bellows loam cake, and diaphragm is located at the limiting board below, and guide's spool is located at the diaphragm bottom.
Said bonnet is connected with bolton with valve body top and seals with sealing gasket; Said bottom flange is connected with bolton with valve body lower portion and seals with sealing gasket.Said bellows is connected with bolton with bonnet, and seals with sealing gasket.
Said guide's valve seat is used in guide's valve pocket of self screw threads for fastening on bonnet, and seals with sealing gasket.
Said piston body is connected with bonnet with the sealing gasket sealing and fixes with bolton.
Said main valve seat is installed on the valve body with self being threaded and with the sealing gasket sealing, said main valve stem is connected piston upper end and fastening fixing with nut.
It is fastening with self nut that said blowdown plug is installed in the pollutant exhaust hole of valve body, and seals with sealing gasket.
The working principle of the utility model: when incondensable gas and low-temperature condensate entering valve pocket, get into guide's valve pocket through pilot hole, bellows pilot valve under the situation of not being heated is opened; Incondensable gas and low-temperature condensate get into piston cavity; A spot of medium is discharged through 3 relief holes that are uniformly distributed with, because the piston compression area greater than the main valve compression area, relies on pressure difference; Order about piston and overcome spring force; Displacement downwards drives main valve stem and main valve plug, opens the main valve seat hole and gets rid of incondensable gas and low-temperature condensate in a large number; When thermal coagulation water got into guide's valve pocket, bellows pressed the filling liquid of chamber to begin the volatilization expansion under the situation of being heated in the bellows, order about diaphragm and close guide's valve seat orifice with the guide's spool that is welded on the diaphragm; 3 relief holes that are uniformly distributed with of piston cavity this moment begin pressure release; Make piston cavity produce step-down, the thrust of the elastic force of piston cavity lower end spring and the generation of main valve compression area is pushed to piston and is resetted simultaneously, drives main valve stem and main valve plug and moves up; Main valve plug is under the effect of 3 guiding; The main valve seat hole is closed in accurately contraposition, and draining stops.Thermal coagulation water begins condensation in the pilot valve chamber, and the filling liquid of pressing the chamber in the bellows is along with decrease of temperature also begins to shrink, and diaphragm and guide's spool are opened guide's valve opening automatically because the effect of pressure medium is upwards passed, and next do action begins.
The pilot valve of the adjustable pilot-operated super large discharge Automatic steam trap Trap of existing bimetal; Its temperature sensing element adopts the circular plate type bimetallic strip, and the circular plate type bimetallic strip is the straight line of certain slope in the power of picking that temperature distortion produces, and comparing with the saturation temperature curve has a long way to go; During work; The difference that can't reach the saturation temperature under the Temperature at discharging condensate under each pressure spot and this pressure is basic identical, i.e. Subcoold temperature basically identical, like this appreciable impact the service behaviour of Automatic steam trap Trap.
Compare with the adjustable pilot-operated super large discharge Automatic steam trap Trap of existing bimetal; The utility model bellows pilot-operated type steam trap valve adopts bellows to do pilot valve; Because the diaphragm of senior sheet alloy is the sheet unfolded; Overcome the overlapping shortcoming that has the gap of the many groups of bimetallic strip, thus highly sensitive; Press the volatility filling liquid of chamber in the bellows; Its temperature conforms to pressure diagram is more approaching with the temperature of saturated vapour with pressure diagram; The difference that has reached the saturation temperature under the Temperature at discharging condensate under each pressure spot and this pressure in operating range more is close; Working pressure is applied widely, need not adjustment during work; The requirement of the applicable different operating modes of bellows of multiple different Subcoold temperature has significantly improved the service behaviour of Automatic steam trap Trap.
The bellows guide spool of the utility model adopts the sealing means of semicircle sphere, has overcome the sealing shortcoming of concentrated wearing and tearing, good seal performance, long service life.
The piston lower end of the utility model is provided with spring, guarantees that the spool closing motion is accurate; During the spring assembling, be provided with pretightening force, improved the seal pressure on the main valve sealing surface, good seal performance; And can come the equalizing piston cavity pressure through 3 relief holes that are uniformly distributed with of piston, and slow down closing motion and avoid bump, prolong main valve working life.
The utility model seal spool spare adopts upper end piston and piston body, middle part main valve stem and hole, piston body bottom, and 3 guiding of lower end spool external diameter and valve seat guide ring, the spool contraposition is accurate, has improved the reliability of switching motion, good seal performance.
The Rational structure of the utility model has improved the usability of this valve, and the bellows pilot-operated type steam trap valve is active in one's movements, and working pressure is applied widely, need not adjustment during work.Because the bellows pilot valve is to rely on variation of temperature to control out valve and the action of closing valve; So can select to have the Temperature at discharging condensate of certain Subcoold temperature according to working condition requirement; All the time accumulate the water of condensation that is lower than saturation temperature before the valve, fresh steam can't reach valve pocket, so when work; Vapour is not leaked in draining; And can effectively utilize a part of sensible heat of water of condensation, improve energy utilization rate; Adopt the sealing means of semicircle sphere to reduce concentrated wearing and tearing, good seal performance, long service life; This valve body is long-pending little, in light weight, and discharge capacity is big, and is applied widely, favorable working performance, and energy utilization rate is high, is a kind of energy-saving steam drain valve of super large discharge.
The technological scheme of the utility model is to adopt bellows to do pilot valve, because the diaphragm of bellows is to adopt senior sheet alloy, and is the sheet unfolded, and is therefore highly sensitive, resistance to pressure good; Pressing the filling liquid of chamber in the bellows is volatile liquid, and the temperature of its volatile liquid conforms to pressure diagram is approaching with the temperature of pressure diagram and saturated vapour, and operating range is wide, need not adjustment during use; The Subcoold temperature size that the bellows of same structure, pilot valve are discharged water of condensation depends on the prescription of pressing the chamber medium in the bellows, can make the bellows of multiple different Subcoold temperature; When being lower than 5 ℃ of left and right sides of saturated-steam temperature, just drive valve like A type bellows; The Type B bellows is just driven valve when being lower than 15 ℃ of left and right sides of saturation temperature, can select the bellows of different Subcoold temperature for use according to the requirement of different operating modes; Applied widely, significantly improved the service behaviour of Automatic steam trap Trap.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation.
Fig. 2 is the utility model embodiment's a bellows structure schematic representation.
Embodiment
Referring to Fig. 1 and 2, the utility model embodiment is provided with bellows pilot valve, bonnet 2, bottom flange 3, piston assembly, valve body 5, main valve, following filter screen 7 and blowdown plug 8.
Said bellows pilot valve is located at valve body 5 tops, and piston assembly and main valve are located at valve body 5 middle parts, and bonnet 2 is connected with valve body 5 tops, and bottom flange 3 is connected with valve body 5 bottoms, and valve body about 5 is provided with straight-through external flange, and following filter screen 7 is located at valve body 5 bottoms.
Said bellows pilot valve is provided with bellows 11, upper spring 12, guide's valve seat 13 and guide's spool 14; Said piston assembly is provided with piston body 41, piston 42, spring 43 and relief hole 44; Said main valve is provided with main valve seat 61, main valve plug 62 and main valve stem 63.
Said bellows 11 is provided with bellows loam cake 111, bellows lower cover 112, limiting board 113 and diaphragm 114; Bellows loam cake 111 covers with bellows lower cover 112; Limiting board 113 is located at the inboard of bellows loam cake 111, and diaphragm 114 is located at the limiting board below, and guide's spool 14 is located at diaphragm 114 bottoms.
Said bellows 11 is installed in guide's valve pocket, and upper spring 12 is inserted in the boss of bellows 11 upper-end surfaces, and guide's valve seat 13 is fastened in the guide's valve pocket on the bonnet 2;
Said piston body 41 vertically is installed on valve body 5 tops, and piston body 41 is connected with bonnet 2; Spring 43 is placed in piston body 41 chambeies and piston 42 lower end boss, and piston 42 is installed in the piston body 41, and piston 42 matches with piston body 41 endoporus, and can slide to axial;
Said main valve seat 61 bottoms are provided with guide ring 9; Said guide ring 9 is connected as a single entity with main valve seat 61; Main valve seat 61 is installed on the valve body 5; Main valve plug 62 is connected as a single entity with main valve stem 63 and is installed in the main valve seat 61, and main valve stem 63 is inserted in spring 43 endoporus of piston assembly, and main valve stem 63 is connected piston 42 upper ends;
Said down filter screen 7 is located in the valve body 5 bottom valve pockets, and following filter screen 7 is installed in outside main valve seat 61 holes on the lower convex platform and bottom flange 3;
Said blowdown plug 8 is installed in the pollutant exhaust hole of valve body 5.
Said bonnet 2 is connected with bolton with valve body 5 tops and seals with sealing gasket; Said bottom flange 3 is connected with bolton with valve body 5 bottoms and seals with sealing gasket.Said bellows lid 15 is connected with bonnet 2 usefulness bolton, and seals with sealing gasket.
In guide's valve pocket of self screw threads for fastening of said guide's valve seat 61 usefulness on bonnet 2, and seal with sealing gasket.
Said piston body 41 usefulness sealing gaskets sealing is connected with bonnet 2 and fixes with bolton.
Said main valve seat 61 usefulness self are threaded to be installed on the valve body 5 and with sealing gasket and seal, and said main valve stem 63 is connected piston 42 upper ends and fastening fixing with nut.
It is fastening with self nut that said blowdown plug 8 is installed in the pollutant exhaust hole of valve body 5, and seals with sealing gasket.
Claims (10)
1. the bellows pilot-operated type steam trap valve is characterized in that being provided with bellows pilot valve, bonnet, bottom flange, piston assembly, valve body, main valve, following filter screen and blowdown plug;
Said bellows pilot valve is located at valve body top, and piston assembly and main valve are located at the valve body middle part, and bonnet is connected with valve body top, and bottom flange is connected with valve body lower portion, and straight-through external flange is set about valve body, and following filter screen is located at valve body lower portion;
Said bellows pilot valve is provided with bellows, upper spring, guide's valve seat and guide's spool; Said piston assembly is provided with piston body, piston, spring and relief hole; Said main valve is provided with main valve seat, main valve plug and main valve stem;
Said bellows is installed in guide's valve pocket, and upper spring is inserted in the boss of bellows upper-end surface, and guide's valve seat is fastened in the guide's valve pocket on the bonnet;
Said piston body vertically is installed on valve body top, and piston body is connected with bonnet; Spring is placed in the piston body chamber and piston lower end boss, and piston is installed in the piston body, and piston matches with the piston body endoporus, and can slide to axial;
Said main valve seat bottom is provided with guide ring; Said guide ring and main valve seat are connected as a single entity, and main valve seat is installed on the valve body, and main valve plug and main valve stem are connected as a single entity and are installed in the main valve seat; Main valve stem is inserted in the spring endoporus of piston assembly, and main valve stem is connected the piston upper end;
Said down filter screen is located in the valve body lower portion valve pocket, and following filter screen is installed in outside the main valve seat hole on the lower convex platform and bottom flange;
Said blowdown plug is installed in the pollutant exhaust hole of valve body.
2. bellows pilot-operated type steam trap valve as claimed in claim 1; It is characterized in that said bellows is provided with bellows loam cake, bellows lower cover, limiting board and diaphragm; Bellows loam cake and bellows lower cover cover; Limiting board is located at the inboard of bellows loam cake, and diaphragm is located at the limiting board below, and guide's spool is located at the diaphragm bottom.
3. bellows pilot-operated type steam trap valve as claimed in claim 1 is characterized in that said bonnet is connected with bolton with valve body top and seals with sealing gasket.
4. bellows pilot-operated type steam trap valve as claimed in claim 1 is characterized in that said bottom flange is connected with bolton with valve body lower portion and seals with sealing gasket.
5. according to claim 1 or claim 2 bellows pilot-operated type steam trap valve is characterized in that said bellows is connected with bolton with bonnet and seals with sealing gasket.
6. bellows pilot-operated type steam trap valve as claimed in claim 1 is characterized in that said guide's valve seat is with sealing in guide's valve pocket of self screw threads for fastening on bonnet and with sealing gasket.
7. bellows pilot-operated type steam trap valve as claimed in claim 1 is characterized in that said piston body is connected with bonnet with sealing gasket sealing and fixes with bolton.
8. bellows pilot-operated type steam trap valve as claimed in claim 1 is characterized in that said main valve seat seals with self being threaded to be installed on the valve body and with sealing gasket.
9. bellows pilot-operated type steam trap valve as claimed in claim 1 is characterized in that said main valve stem is connected piston upper end and fastening fixing with nut.
10. bellows pilot-operated type steam trap valve as claimed in claim 1 is characterized in that it is fastening and seal with sealing gasket with self nut that said blowdown plug is installed in the pollutant exhaust hole of valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202771231U CN202171121U (en) | 2011-08-01 | 2011-08-01 | Capsule pilot-operated type steam drain valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202771231U CN202171121U (en) | 2011-08-01 | 2011-08-01 | Capsule pilot-operated type steam drain valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202171121U true CN202171121U (en) | 2012-03-21 |
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ID=45829316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202771231U Expired - Fee Related CN202171121U (en) | 2011-08-01 | 2011-08-01 | Capsule pilot-operated type steam drain valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202171121U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032625A (en) * | 2012-12-20 | 2013-04-10 | 洪新强 | Y-shaped exhaust gear |
| CN106439776A (en) * | 2016-08-16 | 2017-02-22 | 华电电力科学研究院 | Self-adaptive concurrent boiler drainage expansion control device and drainage system |
-
2011
- 2011-08-01 CN CN2011202771231U patent/CN202171121U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032625A (en) * | 2012-12-20 | 2013-04-10 | 洪新强 | Y-shaped exhaust gear |
| CN103032625B (en) * | 2012-12-20 | 2015-08-05 | 洪新强 | Y type venting gas appliance |
| CN106439776A (en) * | 2016-08-16 | 2017-02-22 | 华电电力科学研究院 | Self-adaptive concurrent boiler drainage expansion control device and drainage system |
| CN106439776B (en) * | 2016-08-16 | 2018-12-25 | 华电电力科学研究院 | A kind of self-adaptation type direct current cooker dewatering capacity-enlarging control device and draining system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: YINGQIAO MACHINERY MANUFACTURING CO., LTD. Assignor: Hong Xinwei Contract record no.: 2014350000078 Denomination of utility model: Capsule pilot-operated type steam drain valve Granted publication date: 20120321 License type: Exclusive License Record date: 20140708 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| 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: 20120321 Termination date: 20170801 |