CN106015607B - A kind of two-way parallel double-flashboard gate valve from pressure relief of lumen - Google Patents
A kind of two-way parallel double-flashboard gate valve from pressure relief of lumen Download PDFInfo
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- CN106015607B CN106015607B CN201610552913.3A CN201610552913A CN106015607B CN 106015607 B CN106015607 B CN 106015607B CN 201610552913 A CN201610552913 A CN 201610552913A CN 106015607 B CN106015607 B CN 106015607B
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- slide core
- pressure
- hole
- elastic component
- valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/029—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with two or more gates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0406—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/048—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded combined with other safety valves, or with pressure control devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0209—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor the valve having a particular passage, e.g. provided with a filter, throttle or safety device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K39/00—Devices for relieving the pressure on the sealing faces
- F16K39/04—Devices for relieving the pressure on the sealing faces for sliding valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to a kind of two-way parallel double-flashboard gate valve from pressure relief of lumen.Mainly solving existing parallel double-flashboard gate valve lumen pressure rise causes flashboard to rise extremely, and actuator can not be opened, or even valve produces the problem of accidents such as destruction occur.Flashboard is equipped with boss, step through-hole is set in boss, slide core is equipped with step through-hole, pressure adjustment block, elastic component, the pressure releasing system that elastic component fixed seat and sphere are formed, bending through hole is set in slide core, the pressure adjustment block, elastic component, elastic component fixed seat, sphere is sequentially placed into bending through hole, bending through hole is equipped with sealing surface I with sphere contact position, sealing surface II is additionally provided with the outside of slide core, sealing surface III corresponding with sealing surface II is equipped with step through-hole, slide core includes left slide core and right slide core, and it is flexibly connected between left slide core and right slide core by connection structure.Inventive structure design is rationally simple, can meet the needs of parallel double-flashboard gate valve lumen pressure release, applied widely.
Description
Technical field
The present invention relates to parallel double-flashboard gate valve technical field, and in particular to a kind of lumen is two-way from the parallel of pressure relief
Double-flashboard gate valve.
Background technology
Parallel double-flashboard gate valve lumen accumulates medium, since external environment condition changes, it is possible to cause lumen pressure medium different
Often rise, so that flashboard can not open valve under the effect of lumen pressure medium with sealing surface of seat tensioner, actuator, or
Since lumen superpressure causes flashboard to produce plastic deformation with valve body, the perils such as Valve breakage are even caused to occur, therefore valve
Door lumen pressure releasing is the indispensable part of valve Reliable Design, and lumen pressure release is divided into interior pressure release and outer pressure release, leaks
Pressure is endangered by the safety valve equipped with setting pressure releasing on valve body for poisonous medium or inflammable and explosive medium etc.
Dangerous medium, usually outer pressure release needs dedicated collection device, complicated, inconvenient, of high cost.For the flat of interior pressure release
Usual lumen can not realize releasing pressure automatically during row double-flashboard gate valve bidirectional bearing, and for one-way bearing pressure when to realize lumen from
Dynamic pressure release then needs the installation direction of regulation valve, and above pressure release is there are limitation, it is necessary to further improve.
Chinese patent document application number 201310082915.7, applies for title parallel double-flashboard gate valve releasing pressure automatically knot
Structure, the patent document disclose a kind of Automatic pressure release structure for double disk parallel gate valve, including valve body, two valve seats and two locks
Plate, two flashboards are equipped with the escape orifice of successively perforation, and the escape orifice is provided with more overbottom pressure inside the valve chamber that can release automatically
The automatic discharge device of power.The structure has the following disadvantages, is only applicable to operating mode when flashboard before and after gate valve seals,
Or the use as unidirectional pressure release.And the most product actual conditions of reality are：The preceding flashboard of parallel double-flashboard gate valve is not
Effective sealing can be played, or only plays effective sealing under a certain pressure.When valve, which advances, presses, pressure releasing value is less than
During nominal pressure, the continuous pressure release of pressure relief device of rear flashboard may be caused to cause to reveal；And after and before the valve at the same time into pressure when, lumen
It is possible to superpressure and generation danger can not be released；When the pressure releasing value of setting is higher than nominal pressure, after and before the valve at the same time into
The situation that lumen pressure rise necessarily leads to superpressure and can not release during pressure occurs, so that danger is produced, there are security risk, therefore
The structure can only realize the function of double-direction relief under special circumstances, and not have versatility.
The content of the invention
In order to overcome the shortcomings of background technology, the present invention provides a kind of two-way parallel double-flashboard lock from pressure relief of lumen
Valve, is effectively improved existing parallel double-flashboard gate valve lumen pressure rise and causes flashboard to rise extremely, actuator can not be opened, or even valve
Produce the problem of accidents such as destruction occur.The letter reasonable in design of the two-way parallel double-flashboard gate valve from pressure relief of the lumen
Single, by setting pressure relief device between double disc, and the pressure relief device is voluntarily adjusted according to Bidirectional pressure force difference in discharge double disc
The pressure in portion, can meet valve one-way bearing pressure using or bidirectional bearing in use, the pressure that lumen exceeds can effectively be let out
Put, while do not distinguishing the installation direction of valve, be suitable for that condition range is wide, realize truly two-way from pressure release work(
Can, also avoid lumen pressure medium caused by since external environment condition change or other factors are possible and raise extremely, and occur
The generation of the perils such as explosion, while easy to the keying of valve, save the time.
The technical solution adopted in the present invention is：A kind of two-way parallel double-flashboard gate valve from pressure relief of lumen, including
Valve body, two flashboards and valve rod, equipped with wedge block and the block that rises between described two flashboards, the flashboard is equipped with boss, in boss
Equipped with step through-hole, pressure releasing system is equipped with the step through-hole, the pressure releasing system includes slide core, pressure tune
Monoblock, elastic component, elastic component fixed seat and sphere, the slide core is interior to be equipped with bending through hole, the pressure adjustment block, elasticity
Part, elastic component fixed seat, sphere are sequentially placed into the bending through hole in slide core, and wherein pressure adjustment block is fixedly connected on activity
Core end, the bending through hole are equipped with sealing surface I with sphere contact position, sealing surface II, step are additionally provided with the outside of the slide core
Sealing surface III corresponding with sealing surface II is equipped with through hole, the slide core includes left slide core and right slide core, and left work
Dynamic to be flexibly connected between core and right slide core by connection structure, the slide core is equipped with shoulder.
The pressure adjustment block and elastic component fixed seat are equipped with through hole, and two through hole is connected, and the elastic component is fixed
Seat against nearly sphere side and be evenly distributed with open slot.
The mode that is fixedly connected between the pressure adjustment block and slide core selects threaded connection, and the pressure adjustment block is set
Some through holes are equipped with six square toes hole sections, and six square toes hole sections are conveniently adjusted back-and-forth motion of the block in slide core and adjust, and then adjust
The elastic force of elastic component, i.e., adjust pressure release value by adjusting the position of pressure adjustment block.
The step through-hole release after including hole section, slide core load hole section and load connection structure hole section, the work
Dynamic core is placed in slide core and loads in hole section, and the connection structure is placed in the loading connection structure hole section of left slide core and right slide core
In the cavity formed.
It is pressure pocket that the slide core and slide core, which load between hole section the space formed, hole section of releasing after pressure pocket connection
With the internal holes of elastic component fixed seat.
The slide core outer circumferential side is equipped with sealed groove, and the groove is built-in with sealing ring.
The bending through hole dogleg section is relief hole.
Described elastic component one end is placed in elastic component fixed seat, and other end overhead is on pressure adjustment block end face, elasticity
Another end in contact of part fixed seat has sphere.
Connection structure between the left slide core and right slide core carries out for adjustment of displacement block or Joining clasp structure
Connection.
The beneficial effects of the invention are as follows：Due to taking above-mentioned technical proposal, existing parallel double-flashboard gate valve is effectively improved
Lumen pressure rise causes flashboard to rise extremely, and actuator can not be opened, or even valve produces and the problem of accident occurs such as destroys, in this
The two-way parallel double-flashboard gate valve from pressure relief of chamber is reasonable in design simple, by setting pressure relief device between double disc,
And the pressure relief device voluntarily adjusts the pressure inside discharge double disc according to Bidirectional pressure force difference, can meet that valve makes in one-way bearing pressure
With or bidirectional bearing in use, the pressure that lumen exceeds can effectively be released, while do not distinguishing the installation direction of valve, can
Adapt to that condition range is wide, realize truly two-way from decompression function, also avoid due to external environment condition change or its
Lumen pressure medium caused by his factor is possible raises extremely, and the generation of the perils such as explosion occurs, while is easy to valve
Open and close, save the time.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the structure sectional view of flashboard 2 in Fig. 1.
Fig. 3 is the partial enlarged view of Fig. 1.
Fig. 4 is two P1 of embodiment>Status architecture schematic diagram during P2.
Fig. 5 is two P2 of embodiment>Status architecture schematic diagram during P1.
Fig. 6 is the connection diagram I of left and right slide core 6 in Fig. 3.
Fig. 7 is the connection diagram II of left and right slide core 6 in Fig. 3.
Fig. 8 is the structure sectional view of slide core 6 in Fig. 3.
Fig. 9 is the structure diagram of Fig. 6 middle position transposition monoblock 51.
Figure 10 is the structure diagram of the embodiment of the present invention one.
Figure 11 is one P2 of embodiment>Status architecture schematic diagram during P1.
Figure 12 is the structure sectional view of slide core 6 in Figure 10.
Figure 13 is the structure sectional view of Snap ring structure 52 in Figure 10.
Figure 14 is the left view sectional view of Figure 13.
Figure 15 is the structure diagram of elastic component fixed seat 9 in Fig. 3.
Figure 16 is the right view of elastic component fixed seat 9 in Fig. 3.
1, valve body in figure；2nd, flashboard；21st, boss；20th, step through-hole；201st, release after hole section；202nd, slide core load hole
Section；203rd, connection structure hole section；204th, shoulder；205th, pressure pocket；206th, cavity；22nd, sealing surface III；3rd, wedge block；4th, rise block；
5th, connection structure；51st, adjustment of displacement block；511st, T-shape connecting portion；52nd, Snap ring structure；521st, hole is embedded；6th, slide core；601、
Pressure release through hole；61st, left slide core；62nd, right slide core；63rd, sealing surface II；64th, sealing surface I；65th, bending through hole；66th, T-shape
Link slot；7th, pressure adjustment block；8th, elastic component；9th, elastic component fixed seat；91st, open slot；10th, sealing ring；11st, sphere；12nd, valve
Bar.
Embodiment
Embodiments of the present invention is further illustrated below in conjunction with the accompanying drawings.
Embodiment one, as shown in Fig. 1 combinations Fig. 2, Figure 10 to Figure 16, a kind of two-way parallel double-gate from pressure relief of lumen
Plate gate valve, including 1, two flashboard 2 of valve body and valve rod 12, equipped with wedge block 3 and the block 4 that rises, the lock between described two flashboards 2
Plate 2 is equipped with boss 21, and step through-hole 20 is equipped with boss 21, pressure releasing system, the pressure are equipped with the step through-hole 20
Power bleed-off system includes slide core 6, pressure adjustment block 7, elastic component 8, elastic component fixed seat 9 and sphere 11, in the slide core 6
Equipped with bending through hole 65, the pressure adjustment block 7, elastic component 8, elastic component fixed seat 9, sphere 11 are sequentially placed into slide core 6
Bending through hole 65 in, wherein pressure adjustment block 7 is fixedly connected on 6 end of slide core, and the bending through hole 65 connects with sphere 11
Synapsis is equipped with sealing surface I 64, and the outside of slide core 6 is additionally provided with sealing surface II 63, is equipped with and sealing surface II in step through-hole 20
63 corresponding sealing surfaces III 22, the slide core 6 include left slide core 61 and right slide core 62, and left slide core 61 and right work
It is flexibly connected between dynamic core 62 by connection structure 5, the slide core 6 is equipped with shoulder 204, and shoulder 204 is used to be flexibly connected a left side
Right slide core 6.
Described 8 one end of elastic component is placed in elastic component fixed seat 9, and other end overhead is on 7 end face of pressure adjustment block, bullet
Property 9 other end of part fixed seat compress sphere 11,11 surface of sphere compresses with sealing surface I 64 and forms sealing.The pressure adjustment
Block 7 and elastic component fixed seat 9 are equipped with through hole, and two through hole is connected, and the elastic component fixed seat 9 is equal close to 11 side of sphere
Even that open slot 91 is distributed with, open slot 91 is the passage of release pressure.Fixation between the pressure adjustment block 7 and slide core 6
Connection mode, which is selected, to be threadedly coupled, i.e., pressure adjustment block 7 is screwed with slide core 6 equipped with external screw thread and is connected, the pressure tune
The through hole that monoblock 7 is equipped with is equipped with six square toes hole sections, and six square toes hole sections are conveniently adjusted block 7 before the interior progress using instrument of slide core 6
It is mobile afterwards to adjust, and then adjust the elastic force of elastic component 8, i.e., adjust pressure release value by adjusting the position of 7 pressure adjustment blocks.
The step through-hole 20 release after including hole section 201, slide core load hole section 202 and load connection structure hole section
203, the slide core 6 is placed in slide core and loads in hole section 202.The slide core 6 and slide core are formed between loading hole section 202
Space be pressure pocket 205, the left slide core 61 is equal with right 62 bearing area of slide core, the pressure-bearing surface be slide core dress
Enter the cross section in 202 hole of hole section, the internal holes for hole section 201 and the elastic component fixed seat 9 of releasing after the connection of pressure pocket 205.
The shoulder 204 is placed in the sky that the loading connection structure hole section 203 of left slide core 61 and right slide core 62 is formed
In chamber 206, same connection structure 5 is also placed in cavity 206, and connection structure 5 makes left slide core 61 and right slide core 62 effectively connect
One is connected in, left slide core 61 and right slide core 62 can move left and right at the same time under the action of pressure differential, while left slide core 61
360 degree can occur within the specific limits at any angle perpendicular to the relative displacement of valve flowing channel axis with right slide core 62, it is left
It is interior without departing from left and right slide core in cavity 206 that connection structure 5 during maximum relative displacement occurs for slide core 61 and right slide core 62
6。
6 outer circumferential side of slide core is equipped with sealed groove, and the groove is built-in with sealing ring 10, and sealing ring 10 ensure that work
Dynamic effective sealing between 6 outer shaft of core and step through-hole 20.
The longitudinal dogleg section of bending through hole 65 is relief hole 601.
The left slide core 61 and right 62 connection structure 5 of slide core are Snap ring structure 52, the shoulder 204 of the slide core 6
It is placed in the embedded hole 521 of Snap ring structure 52, Snap ring structure 52 is placed in 6 connection structure hole section 203 of slide core, Snap ring structure 52
For a kind of four structures opened, left and right slide core 6 can move left and right under the action of pressure differential along the direction of valve passage.
Since mounted Snap ring structure 52 and shoulder 204 are placed in cavity 206, band of the Snap ring structure 52 in slide core 6
Moved under dynamic with the offset at two 2 centers of flashboard, shoulder 204 is not deviate from embedded hole 521.The structure is easy to dismount, structure
Simply.
The flashboard 2 of left and right two and left and right slide core 6 by pressure medium after pressure medium, lumen pressure medium, valve before valve every
It is disconnected.Slide core 6 is placed in hole section 202 and can be moved along valve passage axis, and pressure medium is distinguished with pressure medium after valve before valve
Act on left slide core 61 and on the front and rear pressure-bearing surface of right slide core 62, the height of its pressure determines left and right slide core movement side
To when left and right slide core is moved to any one party, sealing surface II 63 is limited in corresponding sealing surface III 22 in the same direction and shape
Into sealing.
If middle cavity pressure is P0, valve advance pressure is P1, and the laggard pressure of valve is P2, works as P1>During P2, left slide core 61 promotes right work
The sealing surface II 63 that dynamic core 62 moves right on the right side of right slide core 62 is bonded and seals with sealing surface III 22 on flashboard 2, this
601 passage of relief hole is blocked on the right slide core 62 of sample, and lumen is entered beyond the pressure for setting value of releasing by left pressure release passage
Preceding pressure relief device and before leaking into valve（As shown in figure 11）；Vice versa, works as P2>During P1, lumen is beyond the pressure for setting value of releasing
Right pressure relief device is entered and after leaking into valve by right pressure release passage（As shown in figure 12）.It is high that i.e. middle cavity pressure leaks into pressure all the time
That one end.As P1=P2, left slide core 61 and right 62 stress balance of slide core, middle cavity pressure P0 are same by front and rear pressure relief device
When leak into before valve with after valve.
Its pressure leak process is, into the middle cavity pressure of relief hole 601, more than setting pressure release value when, pressure promotes the side
Sphere 11 drive 9 compression elastic piece 8 of elastic component fixed seat, between lumen pressure medium is between sphere 11 and sealing surface I 64
Gap is released, by the open slot 91 of 9 step end face of elastic component fixed seat, by elastic component 8 and the through hole of pressure adjustment block 7, then
Before hole section 201 leaks into valve or after valve.
To sum up state, when there is pressure differential after and before the valve, middle cavity pressure leaks into that high one end of pressure, lumen pressure during no pressure difference
Power leak at the same time before valve with after valve.So under any pressure-bearing operating mode, no matter whether preceding flashboard plays effective sealing, middle cavity pressure
It can realize and effectively release, valve is not also distinguishing installation direction, expands the applying working condition of valve, it is hidden to eliminate safety
Suffer from.
To sum up, as valve advance pressure P1 pressure P2s laggard more than valve, middle cavity pressure P0 is beyond the portion of voltage-regulating system setting pressure
Divide and preceding pressure relief system is entered by lumen, 2 relief hole of flashboard releases before valve；P1 is pressed to be less than the laggard pressure of valve when valve advances in turn
During P2,2 relief hole of flashboard releases after valve；When upstream pressure P1 is equal to the laggard pressure P2 of valve, at the same before valve with pressure release after valve
System decompression.So no matter pressed from valve advance or the laggard pressure of valve can effectively realize lumen pressure release, meet that valve is two-way
Pressure-bearing and the installation direction for not repartitioning valve, eliminate safe hidden trouble.
Embodiment two, as shown in Fig. 1 to Fig. 9 and Figure 15, Figure 16, a kind of two-way parallel double-flashboard from pressure relief of lumen
Gate valve, including 1, two flashboard 2 of valve body and valve rod 12, equipped with wedge block 3 and the block 4 that rises, the flashboard between described two flashboards 2
2 are equipped with boss 21, and step through-hole 20 is equipped with boss, is equipped with pressure releasing system in the step through-hole 20, the pressure is let out
Place system includes slide core 6, pressure adjustment block 7, elastic component 8, elastic component fixed seat 9 and sphere 11, is equipped with the slide core 6
Bending through hole 65, the pressure adjustment block 7, elastic component 8, elastic component fixed seat 9, sphere 11 are sequentially placed into the folding in slide core 6
In curved through hole 65, wherein pressure adjustment block 7 is fixedly connected on 6 end of slide core, the bending through hole 65 and 11 contact position of sphere
Equipped with sealing surface I 64, the outside of slide core 6 is additionally provided with sealing surface II 63, is equipped with and II 63 phase of sealing surface in step through-hole 20
Corresponding sealing surface III 22, the slide core 6 include left slide core 61 and right slide core 62, and left slide core 61 and right slide core
It is flexibly connected between 62 by connection structure 5, the slide core 6 is equipped with shoulder 204.
Described 8 one end of elastic component is placed in elastic component fixed seat 9, and other end overhead is on 7 end face of pressure adjustment block, bullet
Property 9 other end of part fixed seat compress sphere 11,11 surface of sphere compresses with sealing surface I 64 and forms sealing.The pressure adjustment
Block 7 and elastic component fixed seat 9 are equipped with through hole, and two through hole is connected, and the elastic component fixed seat 9 is equal close to 11 side of sphere
Even that open slot 91 is distributed with, open slot 91 is the passage of release pressure.Fixation between the pressure adjustment block 7 and slide core 6
Connection mode, which is selected, to be threadedly coupled, i.e., pressure adjustment block 7 is screwed with slide core 6 equipped with external screw thread and is connected, the pressure tune
The through hole that monoblock 7 is equipped with is equipped with six square toes hole sections, and six square toes hole sections are conveniently adjusted block 7 before the interior progress using instrument of slide core 6
It is mobile afterwards to adjust, and then adjust the elastic force of elastic component 8, i.e., adjust pressure release value by adjusting the position of 7 pressure adjustment blocks.
The step through-hole 20 release after including hole section 201, slide core load hole section 202 and load connection structure hole section
203, the slide core 6 is placed in slide core and loads in hole section 202.The slide core 6 and slide core are formed between loading hole section 202
Space be pressure pocket 205, the left slide core 61 is equal with right 62 bearing area of slide core, the pressure-bearing surface be slide core dress
Enter the cross section in 2 hole of hole section, the internal holes for hole section 201 and the elastic component fixed seat 9 of releasing after the connection of pressure pocket 205.
The shoulder 204 is placed in the sky that the loading connection structure hole section 203 of left slide core 61 and right slide core 62 is formed
In chamber 206, same connection structure 5 is also placed in cavity 206, and connection structure 5 makes left slide core 61 and right slide core 62 in cavity
Moved left and right at the same time in 206, while left and right slide core 6 can occur 360 degree at any angle perpendicular to valve flowing channel axis direction
Relative displacement, and left and right slide core 6 will not in cavity 206 when relative displacement occurs for left slide core 61 and right slide core 62
It is disconnected structure 5.
6 outer circumferential side of slide core is equipped with sealed groove, and the groove is built-in with sealing ring 10, and sealing ring 10 ensure that work
Dynamic effective sealing between 6 outer shaft of core and step through-hole 20.
The longitudinal dogleg section of bending through hole 65 is relief hole 601.
Connection structure 5 between the left slide core 6 and right slide core 61 is adjustment of displacement block 51, the adjustment of displacement block
51 include being placed in the T-shape connecting portion 511 at both ends, and the two T-shapes connecting portion 511 is arranged in a mutually vertical manner, and the left and right two is lived
It is equipped with the shoulder 204 that dynamic core 6 is connected and the corresponding T-shape link slot 66 of T-shape connecting portion 511, the T-shape connection
Portion 511 is placed in T-shape link slot 66 and opposite can slide.51 connection mode of adjustment of displacement block works as left slide core 61 and the right side
360 degree of any relative angle movements occur in cavity 206 for slide core 62 will not make slide core 3 de- with adjustment of displacement block 51
From when the left and right displacement in the range of the cavity 206 of left and right slide core 6, until side sealing surface II 63 and sealing surface III 22 connect
Untill touching sealing.The relief hole 601 is placed in the connection that sealing surface II 63 is connected away from left slide core 61 with right slide core 62
The side in face.
If middle cavity pressure is P0, valve advance pressure is P1, and the laggard pressure of valve is P2, then when valve advance pressure is that press laggard compared with valve of P1 is
During P2 high, left slide core 61 promotes right slide core 62 to move right until the sealing surface II 63 on right slide core 62 living and flashboard 2
Upper sealing surface III 22 is bonded, and 601 passage of relief hole is blocked on so right slide core 62, and lumen is led to beyond pressure by left pressure release
Road enters preceding pressure relief device and releases；Vice versa, then when it is P1 high that valve advance pressure, which is P2 pressures laggard compared with valve, lumen is beyond pressure
Power enters rear pressure relief device by right pressure release passage and releases.The left slide core 61 to link together and right slide core 62, are being pressed
It can produce under the action of force difference and be moved left and right along valve passage direction.
Adjustment of displacement block 51 is equipped with confined planes, that is, connection structure hole section 203, drive of the adjustment of displacement block 51 in slide core 6
Under, moved along T-shape link slot 66 in cavity 206 with the offset at two 2 centers of flashboard.
If middle cavity pressure is P0, valve advance pressure is P1, and the laggard pressure of valve is P2, works as P1>During P2, left slide core 61 promotes right work
The sealing surface II 63 that dynamic core 62 moves right on the right side of right slide core 62 is bonded and seals with sealing surface III 22 on flashboard 2, this
601 passage of relief hole is blocked on the right slide core 62 of sample, lumen P0 beyond setting release value pressure by left pressure release passage into
Before entering preceding pressure relief device and leaking into valve；Vice versa, works as P2>During P1, lumen passes through right pressure release beyond the pressure for setting value of releasing
After passage enters right pressure relief device and leaks into valve.I.e. middle cavity pressure leaks into that high one end of pressure all the time.As P1=P2, left work
Dynamic core 61 and right slide core stress balance, middle cavity pressure by front and rear pressure relief device leak at the same time before valve with after valve.
Its pressure leak process is, into the middle cavity pressure of relief hole 601, more than setting pressure release value when, pressure promotes the side
Sphere 11 drive 9 compression elastic piece 8 of elastic component fixed seat, between lumen pressure medium is between sphere 11 and sealing surface I 64
Gap is released, by the open slot 91 of 9 step end face of elastic component fixed seat, by elastic component 8 and the through hole of pressure adjustment block 7, then
Before hole section 201 leaks into valve or after valve.
To sum up state, when there is pressure differential after and before the valve, middle cavity pressure leaks into that high one end of pressure, lumen pressure during no pressure difference
Power leak at the same time before valve with after valve.So under any pressure-bearing operating mode, no matter whether preceding flashboard plays effective sealing, lumen pressure
Power, which can be realized, effectively releases, and valve is not also distinguishing installation direction, expands the applying working condition of valve, eliminates safety
Hidden danger.
The present invention efficiently solves existing parallel double-flashboard gate valve lumen pressure rise and causes flashboard to rise extremely, and actuator can not
Open, or even valve produces the problem of accidents such as destruction occur.The two-way parallel double-flashboard gate valve knot from pressure relief of the lumen
Structure design is rationally simple, and by setting the slide core equipped with pressure relief device between double disc, which can be with according to Bidirectional pressure
Force difference voluntarily adjusts the direction of discharge double disc lumen pressure medium, can meet the use of the operating mode of any pressure-bearing, be suitable for work
Condition scope is wide, truly two-way from decompression function is realized, so as to avoid due to external environment condition change or other factors
May caused by lumen pressure medium extremely rise and caused by negative consequence.
Every technical staff's notice：Although the present invention is described according to above-mentioned embodiment, of the invention
Invention thought be not limited in the invention, any repacking with inventive concept, will all include this patent protection of the patent right
In the range of.
Claims (9)
1. a kind of two-way parallel double-flashboard gate valve from pressure relief of lumen, including valve body（1）, two flashboards（2）And valve rod
（12）, described two flashboards（2）Between wedge block is housed（3）With the block that rises（4）, it is characterised in that：The flashboard（2）Equipped with boss
（21）, boss（21）It is interior to be equipped with step through-hole（20）, the step through-hole（20）Interior to be equipped with pressure releasing system, the pressure is let out
Place system includes slide core（6）, pressure adjustment block（7）, elastic component（8）, elastic component fixed seat（9）And sphere（11）, the work
Dynamic core（6）It is interior to be equipped with bending through hole（65）, the pressure adjustment block（7）, elastic component（8）, elastic component fixed seat（9）, sphere
（11）It is sequentially placed into slide core（6）Interior bending through hole（65）It is interior, wherein pressure adjustment block（7）It is fixedly connected on slide core（6）
End, the bending through hole（65）With sphere（11）Contact position is equipped with sealing surface I（64）, the slide core（6）Outside is additionally provided with
Sealing surface II（63）, step through-hole（20）It is interior to be equipped with and sealing surface II（63）Corresponding sealing surface III（22）, the slide core
（6）Including left slide core（61）And right slide core（62）, and left slide core（61）With right slide core（62）Between pass through connect knot
Structure（5）It is flexibly connected, the slide core（6）Equipped with shoulder（204）.
A kind of 2. two-way parallel double-flashboard gate valve from pressure relief of lumen according to claim 1, it is characterised in that：Institute
State pressure adjustment block（7）With elastic component fixed seat（9）Through hole is equipped with, and two through hole is connected, the elastic component fixed seat（9）
Close to sphere（11）Side is evenly distributed with open slot（91）.
A kind of 3. two-way parallel double-flashboard gate valve from pressure relief of lumen according to claim 2, it is characterised in that：Institute
State pressure adjustment block（7）With slide core（6）Between the mode that is fixedly connected select threaded connection.
A kind of 4. two-way parallel double-flashboard gate valve from pressure relief of lumen according to claim 1, it is characterised in that：Institute
State step through-hole（20）Release after including hole section（201）, slide core load hole section（202）And load connection structure hole section
（203）, the slide core（6）It is placed in slide core and loads hole section（202）It is interior, the connection structure（5）It is placed in left slide core（61）
With right slide core（62）Loading connection structure hole section（203）The cavity formed（206）It is interior.
A kind of 5. two-way parallel double-flashboard gate valve from pressure relief of lumen according to claim 4, it is characterised in that：Institute
State slide core（6）Load hole section with slide core（202）Between the space that is formed be pressure pocket（205）, pressure pocket（205）After connection
Release hole section（201）With elastic component fixed seat（9）Internal holes.
A kind of 6. two-way parallel double-flashboard gate valve from pressure relief of lumen according to claim 1, it is characterised in that：Institute
State slide core（6）Outer circumferential side is equipped with sealed groove, and the groove is built-in with sealing ring（10）.
A kind of 7. two-way parallel double-flashboard gate valve from pressure relief of lumen according to claim 1, it is characterised in that：Institute
State bending through hole（65）Dogleg section is relief hole（601）.
A kind of 8. two-way parallel double-flashboard gate valve from pressure relief of lumen according to claim 1, it is characterised in that：Institute
State elastic component（8）One end is placed on elastic component fixed seat（9）On, other end overhead is in pressure adjustment block（7）On end face, elastic component
Fixed seat（9）Another end in contact has sphere（11）.
A kind of 9. two-way parallel double-flashboard gate valve from pressure relief of lumen according to claim 1, it is characterised in that：Institute
State left slide core（61 ）With right slide core（62 ）Between connection structure（5）For adjustment of displacement block（51）Or Joining clasp knot
Structure（52）It is attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610552913.3A CN106015607B (en) | 2016-07-12 | 2016-07-12 | A kind of two-way parallel double-flashboard gate valve from pressure relief of lumen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610552913.3A CN106015607B (en) | 2016-07-12 | 2016-07-12 | A kind of two-way parallel double-flashboard gate valve from pressure relief of lumen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106015607A CN106015607A (en) | 2016-10-12 |
| CN106015607B true CN106015607B (en) | 2018-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610552913.3A Active CN106015607B (en) | 2016-07-12 | 2016-07-12 | A kind of two-way parallel double-flashboard gate valve from pressure relief of lumen |
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| CN (1) | CN106015607B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387787A (en) * | 2017-07-28 | 2017-11-24 | 江苏政轩石油机械股份有限公司 | A kind of combined type low torque flat gate valve |
| CN112963558B (en) * | 2021-03-26 | 2022-08-26 | 马鞍山钢铁股份有限公司 | Method for reducing double-flashboard valve fault of high-pressure steam-water system |
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|---|---|---|---|---|
| SE8205477L (en) * | 1981-11-16 | 1983-05-17 | Westinghouse Electric Corp | SLIDING VALVE WITH PRESSURE RELIEF MECHANISM |
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|---|---|---|---|---|
| GB613266A (en) * | 1946-06-14 | 1948-11-24 | Robert Arnold Blakeborough | Improvements in or relating to valves of the split-wedge gate type for controlling the flow of gaseous or liquid media |
| US2571826A (en) * | 1946-06-14 | 1951-10-16 | Blakeborough & Sons Ltd J | Valve for controlling the flow of gaseous or liquid media |
| CN2890527Y (en) * | 2005-11-11 | 2007-04-18 | 浙江宝龙阀门制造有限公司 | Wedge type gate valve with internal pressure relief valve |
| JP2008169954A (en) * | 2007-01-12 | 2008-07-24 | Kitamura Valve Seizo Kk | Ball valve |
| CN102829212A (en) * | 2012-08-20 | 2012-12-19 | 天津祥嘉流体控制系统有限公司 | Ultra-low temperature ball valve |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106015607A (en) | 2016-10-12 |
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Denomination of invention: A parallel double gate valve with two-way self pressure relief structure in the middle chamber Effective date of registration: 20221103 Granted publication date: 20180417 Pledgee: Wenzhou Financing Guarantee Co.,Ltd. Pledgor: ZHEJIANG TINGYU FLUID EQUIPMENT Co.,Ltd. Registration number: Y2022110000294 |