CN207005328U - Hermetically sealed steam converter valve - Google Patents
Hermetically sealed steam converter valve Download PDFInfo
- Publication number
- CN207005328U CN207005328U CN201720567205.7U CN201720567205U CN207005328U CN 207005328 U CN207005328 U CN 207005328U CN 201720567205 U CN201720567205 U CN 201720567205U CN 207005328 U CN207005328 U CN 207005328U
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- valve
- seat
- sparge pipe
- flap
- clack
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Abstract
A kind of hermetically sealed steam converter valve, including valve body, valve seat, flap, valve rod, bonnet are the utility model is related to, the upper and lower both sides of valve seat are respectively the snout cavity and outlet plenum of valve body, and valve body lower portion sets base；Mainly flap forms Double-clack sealing structure by main valve clack and secondary flap, when main valve clack and valve seat, secondary flap and auxiliary-seat simultaneously close off, can completely cut off fluid passage, prevent steam from leaking；Desuperheating device is set in outlet plenum, the Desuperheating device is made up of sparge pipe and adjusting rod, sparge pipe lower end is fixedly mounted on base, sparge pipe top is uniformly formed with radial nozzles, adjusting rod is the downward extension of valve rod, the unlatching quantity of sparge pipe top nozzle and the aperture of flap are adjusted in synchronism, and realize desuperheat and decompression Synchronization Control.With good seal performance, attemperation control precision is high, and system bulk and installation space are small, the advantages such as totle drilling cost is low.Suitable for electric power, the steam temperature reducing and pressure reducing system of chemical industry.
Description
Technical field
The utility model belongs to valve field, specifically on a kind of steam converter valve.The utility model is applied to
The steam temperature reducing and pressure reducing system of electric power, chemical industry.
Background technology
Electric power, chemical industry production process in, it is necessary to the primary steam of HTHP is carried out into pressure and temperature reducing, use
The temperature and pressure of mouth output steam meets the requirement of production technology.Steam converter valve by executing agency's thrust because being limited, often
Using the pressure reduction structure of multilevel decompression, this structure can be poor in valve-closed state seal performance, certain leakage be present
Amount, therefore in general occasion and the less demanding system of technological parameter, the switch valve of cut-out must be installed before valve, so as to
Cut off during particular/special requirement, and be not suitable for the higher operating mode of seal request and use.
Existing reducing-and-cooling plant, the design structure of desuperheat after typically first being depressurized.Single-stage is used in the mechanism of decompressor
Regulation decompression plus restricting orifice secondary buck structure design, desuperheat mechanism set special desuperheat to spray in the duct after using decompression
Nozzle carries out spray desuperheating, and the injection flow rate of its temperature reducing system and the steam flow of depressurized system independently control, desuperheat and decompression
Poor synchronization is controlled, attemperation control precision is low, and whole temperature reducing and pressure reducing system volume is big, installation space is big, totle drilling cost
It is high.
The content of the invention
The purpose of this utility model is the shortcomings that presence for prior art, there is provided a kind of closed mode seal performance energy
Good, desuperheat and decompression Synchronization Control, attemperation control precision is high, and system bulk and installation space are small, low hermetically sealed of cost
Steam converter valve.
The technical solution of the utility model includes valve body, valve seat, flap, valve rod, bonnet, and valve seat both sides is respectively up and down
The snout cavity and outlet plenum of valve body, set throat bushing between snout cavity and valve body import passage, and outlet plenum leads to valve outlet
Cage adjusting set is set between road, and valve body lower portion sets base；Mainly it is close by main valve clack and secondary flap to form Double-clack for flap
Seal structure, valve seat are arranged on cage regulation set upper side, and main valve clack is formed with the sealing surface to be cooperated with valve seat, in main valve flap seal
One and the dynamic cage adjustment barrel coordinated of cage adjusting set inwall are connected on the downside of face, one and throat bushing are connected on the upside of main valve clack sealing surface
The dynamic cylinder coordinated, the bottom surface circle centre position of cylinder are formed with the through hole of connection cage regulation tube inner chamber, and the through hole upper surface is formed with pair
Valve seat, secondary flap are fixedly mounted on the valve rod of cylinder bore, and its lower end is provided with the sealing surface to be cooperated with auxiliary-seat, cylindrical
Face and the dynamic cooperation of cylinder bore wall, disc spring, upper surface and cylinder are installed between middle part radial direction convex shoulder and cylinder bore radial direction step
Pressure ring is set between inwall；Desuperheating device is set in outlet plenum, and the Desuperheating device is made up of sparge pipe and adjusting rod, under sparge pipe
End is fixedly mounted on base, and water spray pipe orifice connects with the water pipe head on base, and sparge pipe top, which is uniformly formed with, radially sprays
Mouth, the sparge pipe inner round wall on the downside of bottom radial nozzles are formed with the sealing surface to be cooperated with adjusting rod lower surface, regulation
Bar is the downward extension of valve rod, when secondary flap and auxiliary-seat, main valve clack and valve seat are in sealing state, adjusting rod lower end it is close
The sealing surface of front cover and sparge pipe inner round wall seals against each other cooperation.
Preferably, the balance pipe of connection valve body snout cavity and auxiliary-seat inlet side is formed with secondary flap.
Preferably, the periphery of cylinder is formed with axially directed groove on main valve clack, is formed with throat bushing and the axially directed groove
The feather key of mutual cooperation.
The utility model has the advantages that form Double-clack sealing structure using main valve clack and secondary flap, main valve clack and valve seat,
When secondary flap and auxiliary-seat simultaneously close off, can completely cut off fluid passage, prevent steam from leaking, good seal performance；Desuperheating device
The adjusting rod extended downwardly using sparge pipe and valve rod is formed, the same step of aperture of the unlatching quantity and flap of sparge pipe top nozzle
Section, desuperheat and decompression Synchronization Control are realized, attemperation control precision is high, and system bulk and installation space are small, and totle drilling cost is low.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
1 base, 2 water pipe heads, 3 valve bodies, 4 cage adjusting sets, 5 sparge pipes, 6 nozzles, 7 adjusting rods, 8 cage adjustment barrels, 9
Main valve clack, 10 throat bushings, 11 disc springs, 12 secondary flaps, 13 cylinders, 14 balance pipes, 15 pressure rings, 16 glands, 17 valve rods, 18 bonnets,
19 auxiliary-seats, 20 valve seats, 21 homogenizing plates.
Embodiment
Hermetically sealed steam converter valve as shown in Figure 1, including valve body 3, valve seat 20, flap, valve rod 17, bonnet 18, valve seat
About 20 both sides are respectively the snout cavity and outlet plenum of valve body 3, and throat bushing is set between snout cavity and the intake channel of valve body 3
10, cage adjusting set 4 is set between outlet plenum and the exit passageway of valve body 3, and the bottom of valve body 3 sets base 1, and valve body 3 is using overall
Forging, throat bushing 10 and the even circumferential of cage adjusting set 4 are formed with some apertures, the steam flow of the intake channel of valve body 3 are divided into
Some shallow bid flows, reduce the impact of steam big flow and cause vibration, noise and part is washed away；Flap is by main valve clack 9 and pair
Flap 12 forms Double-clack sealing structure, and valve seat 20 is arranged on the upper end of cage adjusting set 4, and main valve clack 9 is formed with mutual with valve seat 20
The sealing surface of cooperation, it is provided with the downside of the sealing surface of main valve clack 9 and the dynamic cage adjustment barrel 8 coordinated of the inwall of cage adjusting set 4, the cage
The top circumferencial direction of formula adjustment barrel 8 is uniformly formed with radial hole, when main valve clack 9 and the sealing of valve seat 20 coordinate, cage adjustment barrel 8
Sealing mated condition is in cage adjusting set 4, one and the dynamic cylinder coordinated of throat bushing 10 are connected on the upside of the sealing surface of main valve clack 9
13, coordinate between the periphery and the inner round wall of throat bushing 10 of the cylinder 13 for dynamic sealing, the bottom surface circle centre position of cylinder 13 is formed with company
The through hole of the logical inner chamber of cage adjustment barrel 8, the through hole upper surface are formed with auxiliary-seat 19, and secondary flap 12 is fixedly mounted on the inner chamber of cylinder 13
Valve rod 17 on, its lower end is provided with the sealing surface to be cooperated with auxiliary-seat 19, and periphery and the internal chamber wall of cylinder 13 are dynamic to be coordinated, in
Disc spring 11 is installed, disc spring 11 acts on vibration and noise reducing, auxiliary-seat 19 between portion's radial direction convex shoulder and the inner chamber radial direction step of cylinder 13
Pressure ring 15 is set between upper surface and the inwall of cylinder 13, and pressure ring 15 is fixedly mounted on the inwall of cylinder 13, and its lower surface is realized to pair
Flap 12 is moved up spacing in cylinder 13, and in opening process, secondary flap 12 is first turned on, and reduces main valve clack about 9
Pressure difference；Desuperheating device is set in outlet plenum, and the Desuperheating device is made up of sparge pipe 5 and adjusting rod 7, and peace is fixed in the lower end of sparge pipe 5
On base 1, the endoporus of sparge pipe 5 connects with the water pipe head 2 on base 1, and the top of sparge pipe 5 is formed with the nozzle of some radial directions
6, nozzle 6 is circumferentially and axially uniformly distributed in sparge pipe 5, the inner round wall of sparge pipe 5 in the downside of bottom nozzle 6 be formed with
The sealing surface that the lower surface of adjusting rod 7 cooperates, adjusting rod 7 are the downward extension of valve rod 17, secondary flap 12 and auxiliary-seat 19,
When main valve clack 9 is in sealing state with valve seat 20, the sealing surface of the sealing surface and the inner round wall of sparge pipe 5 of the lower end of adjusting rod 7 is mutual
Sealing coordinates, and while gradually unlatching with the drive secondary flap 12 of valve rod 17 and main valve clack 9, adjusting rod 7 progressively opens nozzle 6,
Injection flow rate is increased with the increase of steam flow, realize desuperheat with decompression be adjusted in synchronism control, flow of steam at high temperature it is out-of-date
Decreased in valve pocket with the desuperheating water mixed aerosol sprayed in desuperheat shower nozzle, temperature, the flow of desuperheating water is as technique is to steaming
Vapour traffic requirement automatically adjusts.Throat bushing 10 is fixed by gland 16 and is fitted in the snout cavity of valve body 3, and lower end is fixed and is fitted in cage
In the upper surface of adjusting set 4, the upper end periphery of cage adjusting set 4 is sealingly mounted between the snout cavity of valve body 3 and outlet plenum, bonnet 18
Pressure energized seal structure is used between valve body 3, the outlet of valve body 3 sets homogenizing plate.
The balance pipe 14 of the connection snout cavity of valve body 3 and the inlet side of auxiliary-seat 19 is formed with secondary flap 12, opens secondary flap 12
Quickly released when opening snout cavity pressures.
The periphery of cylinder 13 is formed with axially directed groove on main valve clack 9, is formed with throat bushing 10 and the axially directed groove phase
The feather key mutually coordinated, prevent main valve clack 9 from rotating.
Claims (2)
1. a kind of hermetically sealed steam converter valve, including valve body (3), valve seat (20), flap, valve rod (17), bonnet (18), valve seat
(20) both sides are respectively the snout cavity and outlet plenum of valve body (3) up and down, and section is set between snout cavity and valve body (3) intake channel
Stream set (10), sets cage adjusting set (4) between outlet plenum and valve body (3) exit passageway, valve body (3) bottom sets base (1)；
It is characterized in that flap forms Double-clack sealing structure by main valve clack (9) and secondary flap (12), valve seat (20) is arranged on cage regulation
Cover (4) upper end, main valve clack (9) is formed with the sealing surface to be cooperated with valve seat (20), be provided with the downside of main valve clack (9) sealing surface with
The dynamic cage adjustment barrel (8) coordinated of cage adjusting set (4) inwall, the connection of main valve clack (9) sealing surface upside one and throat bushing
(10) cylinder (13) coordinated is moved, the bottom surface circle centre position of cylinder (13) is formed with the through hole of connection cage adjustment barrel (8) inner chamber, and this is logical
Hole upper surface is formed with auxiliary-seat (19), and secondary flap (12) is fixedly mounted on the valve rod (17) of cylinder (13) inner chamber, and its lower end is set
There are the sealing surface to be cooperated with auxiliary-seat (19), periphery and the dynamic cooperation of cylinder (13) internal chamber wall, middle part radial direction convex shoulder and circle
Disc spring (11) is installed between the radial direction step of cylinder (13) inner chamber, pressure ring is set between auxiliary-seat (19) upper surface and cylinder (13) inwall
(15)；Desuperheating device is set in outlet plenum, and the Desuperheating device is made up of sparge pipe (5) and adjusting rod (7), sparge pipe (5) lower end
It is fixedly mounted on base (1), sparge pipe (5) endoporus connects with the water pipe head (2) on base (1), sparge pipe (5) top system
There is the nozzle (6) of some radial directions, nozzle (6) is circumferentially and axially uniformly distributed in sparge pipe (5), in bottom nozzle (6)
Sparge pipe (5) inner round wall of downside is formed with the sealing surface to be cooperated with adjusting rod (7) lower surface, and adjusting rod (7) is valve rod
(17) downward extension, when secondary flap (12) and auxiliary-seat (19), main valve clack (9) are in sealing state with valve seat (20), adjust
The sealing surface of pole (7) lower end seals against each other cooperation with the sealing surface of sparge pipe (5) inner round wall.
2. hermetically sealed steam converter valve according to claim 1, it is characterized in that being formed with connection valve body (3) in secondary flap (12)
The balance pipe (14) of snout cavity and auxiliary-seat (19) inlet side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720567205.7U CN207005328U (en) | 2017-05-15 | 2017-05-15 | Hermetically sealed steam converter valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720567205.7U CN207005328U (en) | 2017-05-15 | 2017-05-15 | Hermetically sealed steam converter valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207005328U true CN207005328U (en) | 2018-02-13 |
Family
ID=61444628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720567205.7U Active CN207005328U (en) | 2017-05-15 | 2017-05-15 | Hermetically sealed steam converter valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207005328U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533780A (en) * | 2018-05-09 | 2018-09-14 | 杭州华惠阀门有限公司 | A kind of pressure and temperature reducing valve |
-
2017
- 2017-05-15 CN CN201720567205.7U patent/CN207005328U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533780A (en) * | 2018-05-09 | 2018-09-14 | 杭州华惠阀门有限公司 | A kind of pressure and temperature reducing valve |
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