CN206361212U - A kind of power plant safety valve of quick closedown - Google Patents
A kind of power plant safety valve of quick closedown Download PDFInfo
- Publication number
- CN206361212U CN206361212U CN201621307003.0U CN201621307003U CN206361212U CN 206361212 U CN206361212 U CN 206361212U CN 201621307003 U CN201621307003 U CN 201621307003U CN 206361212 U CN206361212 U CN 206361212U
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- China
- Prior art keywords
- valve
- bonnet
- seat
- radiator
- valve body
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Abstract
The utility model proposes a kind of quick closedown power plant safety valve, including bonnet, valve rod, valve seat, valve body and radiator, guide sleeve is provided with valve body, bonnet is provided with sealing shroud and (the first back-moving spring, the upper end of bonnet is provided with quick-acting closure, quick-acting closure includes housing, push rod, second back-moving spring and lever, it is the chamber that loses heart between bonnet and radiator, lose heart chamber connection delivery pipe, delivery pipe exit is located at below the bearing plate of lever one end, the utility model is simple in construction, it is reasonable in design, steam impulse force when being discharged using safety valve, make safety valve quick closedown with lever principle, so as to reach satisfactory blowdown of a safety valve, simultaneously, the means for adjusting blow pressure are placed on outside valve, debugging is convenient, when especially making cold conditions full performance test to newly-designed product, the superiority of debugging can more be protruded.
Description
Technical field
The utility model is related to a kind of power plant safety valve, the power plant safety valve of particularly a kind of quick closedown.
Background technology
Power plant be the high temperature and high pressure steam medium with station boiler output as the power of generating, therefore station boiler is matched somebody with somebody
Closing presure (blow pressure) after the safety valve discharge of set has strict requirements.Blow pressure is too low, can be to system operation band
Carry out very big trouble, open and return both at home and abroad the Opening pressure value of seat differential pressure requirements≤4% to safety valve about standard.
To reach that this is required, domestic each safety valve manufactory mostly uses foreign well-known enterprise such as Crosby in the design,
The advanced configuration of the products such as Consolidated, nonetheless, or hardly consistent with requiring.
Utility model content
In view of the above-mentioned problems, the utility model proposes a kind of power plant safety valve of quick closedown.
To solve above technical problem, the technical scheme that the utility model is provided is:
The power plant safety valve of a kind of quick closedown, it is characterised in that including bonnet, valve rod, valve seat, valve body and radiator,
Bolt is fixedly connected from top to bottom successively with valve body for the bonnet, radiator, and the valve body includes material inlet and material outlet,
The material inlet and material outlet it is axially vertical, the valve seat is arranged at material outlet, and is welded and fixed, valve seat upper end
In cylinder, it is cased with lower adjusting ring, valve body being provided with guide sleeve on its cylindrical outer wall for being in, the upper end of valve body is provided with ring
The first stepped limited block that shape is set, stepped second of the upper periphery provided with annular setting of the guide sleeve
Adjusting ring, first limited block and the second limited block corresponding matching are cased with limited block, the outer wall of guide sleeve, guide sleeve leads to
Cross radiator and valve body is gripped；
The top of the bonnet is provided with sealing shroud, and valve rod is vertically arranged, and sealing shroud, bonnet are sequentially passed through from top to bottom, is dissipated
Hot device, and inserting in valve body, the lower end of valve rod is fixed with flap, the flap and valve seat corresponding matching, valve rod from upper
Under be fixed with fixed seat and seal receptacle successively, the fixed seating is between bonnet, radiator, and the seal receptacle is arranged at scattered
Between hot device, valve body, (the first back-moving spring, upper spring seat and lower spring cup are provided with bonnet, between the upper spring seat and valve rod
Gap coordinates, and is positioned by bolt, and the lower spring cup is located at immediately below upper spring seat, and coordinates with valve lever clearance, lower bullet
Fixed seat is close in the lower end of spring abutment, and the (the first back-moving spring is placed on valve rod, between upper spring seat and lower spring cup, the
The two ends of one back-moving spring are pressed on upper spring seat and lower spring cup respectively；
The upper end of the bonnet is provided with quick-acting closure, and the quick-acting closure includes housing, push rod, the second reset
Spring and lever, the lower end of the push rod and the top of valve rod are connected, and its upper end passes through housing, and the second back-moving spring is enclosed on
On push rod, its two ends is mortgaged on valve rod and housing respectively, is hinged at the top of one end of the lever and push rod, its intermediate part with
Housing hinge, the lever other end is provided with bearing plate, is the chamber that loses heart between the bonnet and radiator, the discouraged chamber connection discharge
Pipe, the delivery pipe is vertically arranged, and delivery pipe exit is located at below bearing plate；
The first locating piece is fixed with the housing, the first locating piece is run through in the valve rod upper end, and is positioned with first
Block gap coordinates, and the top of valve rod is provided with the second locating piece in annular, and second locating piece is corresponding with the first locating piece
Coordinate；
Further, the bolt is arranged at bonnet side；
Further, the exit of the delivery pipe is provided with adjusting screw；
Further, the axis of the valve rod, flap, valve seat and material outlet is same straight line.
Utility model works principle：
1st, safety valve normal work, flap is in the closed position, and steam pressure is less than Opening pressure.
2nd, when steam pressure reaches Opening pressure（Such as 4.92MPa）When, flap initially moves off the sealing surface of valve seat, works as pressure
When reaching maximum pressure（Such as 5.0676Mpa）, flap lift to maximum height, drivening piece push rod is lifted valve rod simultaneously, so that
Lever rotation, and then bearing plate is horizontal and the exit just to delivery pipe, valve reaches maximum pump discharge.Now let out
The some vapor medium put is gone in delivery pipe by guide sleeve medial gap through the chamber that loses heart, and steam is flung under bearing plate through the mouth of pipe
Face, rapidly by lever rotation and lower promotion push rod, band ovable valve stem falls after rise rapidly, forces flap to return on the sealing surface of valve seat, enters
Row closes sealing.
Outlet of the steam through delivery pipe flings the size of the pressure below bearing plate, can adjust steam flow by adjusting screw
Size and change, though second back-moving spring rigidity is small, also function to help push rod fall after rise effect.
The beneficial effects of the utility model are：
The utility model proposes a kind of quick closedown power plant safety valve, including bonnet, valve rod, valve seat, valve body and dissipate
Guide sleeve is provided with hot device, valve body, bonnet is provided with sealing shroud and (the first back-moving spring, and the upper end of bonnet is filled provided with quick-make
Put, quick-acting closure includes housing, push rod, second back-moving spring and lever, be the chamber that loses heart between bonnet and radiator, lose heart
Chamber connects delivery pipe, and delivery pipe exit is located at below the bearing plate of lever one end, and the utility model is simple in construction, and design is closed
Reason, steam impulse force when being discharged using safety valve makes safety valve quick closedown with lever principle, so as to reach satisfactory
Blowdown of a safety valve, meanwhile, the means for adjusting blow pressure are placed on outside valve, debugging is convenient, especially newly-designed product made
During cold conditions full performance test, the superiority of debugging can be more protruded.
Brief description of the drawings
Fig. 1 the utility model schematic diagrames.
Fig. 2 the utility model full dose discharges schematic diagram.
Embodiment
A kind of power plant safety valve of quick closedown as depicted, it is characterised in that including bonnet 1, valve rod 2, valve seat 3,
Bolt is fixedly connected from top to bottom successively for valve body 4 and radiator 5, the bonnet 1, radiator 5 and valve body 4, and the valve body 4 includes
Material inlet 6 and material outlet 7, the material inlet 6 and material outlet 7 it is axially vertical, the valve seat 3 is arranged at material and gone out
At mouth 7, and it is welded and fixed, the upper end of valve seat 3 is cased with lower adjusting ring 8, valve body 4 in cylindrical on its cylindrical outer wall for being in
It is interior to be provided with guide sleeve 9, the first stepped limited block 10 that the upper end of valve body 4 is set provided with annular, the guide sleeve 9 it is upper
Adjusting ring 12 is cased with the second stepped limited block 11 that end periphery is set provided with annular, the outer wall of guide sleeve 9, it is described
First limited block 10 and the corresponding matching of the second limited block 11, guide sleeve 9 are gripped by radiator 5 and valve body 4；
The top of the bonnet 1 is provided with sealing shroud 13, and valve rod 2 is vertically arranged, and sealing shroud 13, valve are sequentially passed through from top to bottom
Lid 1, radiator 5, and insert in valve body 4, the lower end of valve rod 2 is fixed with flap 14, and the flap 14 is corresponding with valve seat 3 to match somebody with somebody
Close, be fixed with fixed seat 15 and seal receptacle 16 on valve rod 2 successively from top to bottom, the fixed seat 15 is located at bonnet 1, radiator
Between 5, the seal receptacle 16 is arranged between radiator 5, valve body 4, and (the first back-moving spring 17, upper spring seat are provided with bonnet 1
18 and lower spring cup 19, the upper spring seat 18 coordinates with the gap of valve rod 2, is positioned by bolt 20, the lower spring cup
19 are located at immediately below upper spring seat 18, and coordinate with the gap of valve rod 2, and fixed seat 15 is close in the lower end of lower spring cup 19, and described the
One back-moving spring 17 is placed on valve rod 2, between upper spring seat 18 and lower spring cup 19, the two ends point of (the first back-moving spring 17
Do not press on upper spring seat 18 and lower spring cup 19；
The upper end of the bonnet 1 is provided with quick-acting closure, and the quick-acting closure includes housing 21, push rod 22, the
Two back-moving springs 23 and lever 24, the lower end of the push rod 22 are connected with the top of valve rod 2, and its upper end passes through housing 21, described
Second back-moving spring 23 is enclosed on push rod 22, and its two ends is mortgaged on valve rod 2 and housing 21 respectively, one end of the lever 24 with
The top of push rod 22 is hinged, and the middle part of lever 24 is hinged with housing 21, and the other end of lever 24 is provided with bearing plate 25, the He of bonnet 1
It is the chamber 26 that loses heart between radiator 5, the discouraged connection of chamber 26 delivery pipe 27, the delivery pipe 27 is vertically arranged, delivery pipe 27
Exit is located at the lower section of bearing plate 25；
It is fixed with the first locating piece 28 in the housing 21, the first locating piece 28 is run through in the upper end of valve rod 2, and with the
The gap of a positioning block 28 coordinates, and the top of valve rod 2 is provided with the second locating piece 29 in annular, second locating piece 29 and the
The corresponding matching of a positioning block 28；
Further, the bolt 20 is arranged at the side of bonnet 1；
Further, the exit of the delivery pipe 27 is provided with adjusting screw 30；
Further, the axis of the valve rod 2, flap 14, valve seat 3 and material outlet 7 is same straight line.
It is described above, only the utility model preferably embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model is disclosed
Change or replacement, should all cover in protection domain of the present utility model.Therefore, protection domain of the present utility model should be with
The protection domain of claims is defined.
Claims (4)
1. the power plant safety valve of a kind of quick closedown, it is characterised in that including bonnet, valve rod, valve seat, valve body and radiator, institute
Stating bonnet, radiator, bolt is fixedly connected from top to bottom successively with valve body, and the valve body includes material inlet and material outlet, institute
The axially vertical of material inlet and material outlet is stated, the valve seat is arranged at material outlet, and is welded and fixed, and valve seat upper end is in
It is cased with lower adjusting ring, valve body being provided with guide sleeve on cylinder, its cylindrical outer wall for being in, the upper end of valve body is provided with annular
The the first stepped limited block set, the upper periphery of the guide sleeve is limited provided with stepped second that annular is set
Adjusting ring, first limited block and the second limited block corresponding matching are cased with position block, the outer wall of guide sleeve, guide sleeve passes through
Radiator and valve body are gripped；
The top of the bonnet is provided with sealing shroud, and valve rod is vertically arranged, and sealing shroud, bonnet, radiator are sequentially passed through from top to bottom,
And insert in valve body, the lower end of valve rod is fixed with flap, the flap and valve seat corresponding matching, valve rod from top to bottom successively
Be fixed with fixed seat and seal receptacle, the fixed seating between bonnet, radiator, the seal receptacle be arranged at radiator,
Between valve body, (the first back-moving spring, upper spring seat and lower spring cup are provided with bonnet, the upper spring seat is matched somebody with somebody with valve lever clearance
Close, positioned by bolt, the lower spring cup is located at immediately below upper spring seat, and coordinate with valve lever clearance, lower spring cup
Lower end be close to fixed seat, the (the first back-moving spring is placed on valve rod, between upper spring seat and lower spring cup, first answer
The two ends of position spring are pressed on upper spring seat and lower spring cup respectively；
The upper end of the bonnet is provided with quick-acting closure, and the quick-acting closure includes housing, push rod, second back-moving spring
And lever, the lower end of the push rod and the top connection of valve rod, its upper end is enclosed on push rod through housing, the second back-moving spring
On, its two ends is mortgaged on valve rod and housing respectively, is hinged at the top of one end of the lever and push rod, its intermediate part and housing
It is hinged, the lever other end is provided with bearing plate, is the chamber that loses heart between the bonnet and radiator, the discouraged chamber connection delivery pipe,
The delivery pipe is vertically arranged, and delivery pipe exit is located at below bearing plate；
The first locating piece is fixed with the housing, the first locating piece is run through in the valve rod upper end, and between the first locating piece
Gap coordinates, and the top of valve rod is provided with the second locating piece in annular, second locating piece and the first locating piece corresponding matching.
2. the power plant safety valve of a kind of quick closedown as claimed in claim 1, it is characterised in that the bolt is arranged at
Bonnet side.
3. a kind of power plant safety valve of quick closedown as claimed in claim 1, it is characterised in that the exit of the delivery pipe
Provided with adjusting screw.
4. the power plant safety valve of a kind of quick closedown as claimed in claim 1, it is characterised in that the valve rod, flap, valve seat
Axis with material outlet is same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621307003.0U CN206361212U (en) | 2016-12-01 | 2016-12-01 | A kind of power plant safety valve of quick closedown |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621307003.0U CN206361212U (en) | 2016-12-01 | 2016-12-01 | A kind of power plant safety valve of quick closedown |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206361212U true CN206361212U (en) | 2017-07-28 |
Family
ID=59373131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621307003.0U Active CN206361212U (en) | 2016-12-01 | 2016-12-01 | A kind of power plant safety valve of quick closedown |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206361212U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523748A (en) * | 2016-12-01 | 2017-03-22 | 扬中市阀门厂有限公司 | Quick-closed power station safety valve |
| CN111828696A (en) * | 2020-07-06 | 2020-10-27 | 哈电集团哈尔滨电站阀门有限公司 | Spring safety valve with fine adjustment structure |
-
2016
- 2016-12-01 CN CN201621307003.0U patent/CN206361212U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523748A (en) * | 2016-12-01 | 2017-03-22 | 扬中市阀门厂有限公司 | Quick-closed power station safety valve |
| CN106523748B (en) * | 2016-12-01 | 2024-04-02 | 扬中市阀门厂有限公司 | Power station relief valve of quick closing |
| CN111828696A (en) * | 2020-07-06 | 2020-10-27 | 哈电集团哈尔滨电站阀门有限公司 | Spring safety valve with fine adjustment structure |
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| GR01 | Patent grant |