CN204784776U - High temperature high pressure guide formula trip valve - Google Patents

High temperature high pressure guide formula trip valve Download PDF

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Publication number
CN204784776U
CN204784776U CN201520532999.4U CN201520532999U CN204784776U CN 204784776 U CN204784776 U CN 204784776U CN 201520532999 U CN201520532999 U CN 201520532999U CN 204784776 U CN204784776 U CN 204784776U
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CN
China
Prior art keywords
valve
main valve
high temperature
sealing
high pressure
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Active
Application number
CN201520532999.4U
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Chinese (zh)
Inventor
陈志滔
吴建曼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jinfeng Fluid Control Technology Co., Ltd.
Original Assignee
ZHEJIANG JINFENG AUTOMATION METER CO Ltd
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Priority to CN201520532999.4U priority Critical patent/CN204784776U/en
Application granted granted Critical
Publication of CN204784776U publication Critical patent/CN204784776U/en
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Abstract

The utility model provides a high temperature high pressure guide formula trip valve, it includes valve body, valve gap, set up the runner in the valve body, a valve seat is arranged in the valve body, set up the sleeve on the disk seat, set up main valve core in the sleeve, set up guide's case in the main valve core, guide's case bottom is extended and is formed sealed head, be equipped with the discharge orifice of crossing with sealed first looks adaptation in the main valve core, main valve core bottom both sides and the cooperation of disk seat metal seal, set up a plurality of first sealing washers between main valve core upside and the sleeve, the last gland that is equipped with of main valve core, be equipped with the pressure relief vent on the gland, guide's case is connected with the valve rod, guide's case has sealed head and broke away from the discharge orifice and drove primary importance that main valve core went upward and the discharge orifice was pressed on the sealed top of the head the second place, main valve core and guide's case have been set up, the pressure release is opened in advance to during operation guide case, then guide's case drives main valve core and realizes large -traffic opening, the response speed of mechanism is fast, long service lifetime, adopt the metal seal design, can improve the high temperature resistance effect of whole valve.

Description

High Temperature High Pressure leading type cut-off valve
Technical field
The utility model relates to a kind of cut-off valve, is specifically related to a kind of High Temperature High Pressure leading type cut-off valve.
Background technique
Cut-off valve is the one of actuator in automatic system, is made up of many springs pneumatic diaphragn actuating mechanism or floating piston actuator and modulating valve, receives the signal of regulation meter, the cut-out of Controlling Technology fluids within pipes, connection or switching.Have structure simple, be quick on the draw, the features such as reliable in action, can be widely used in the industrial production sectors such as oil, chemical industry, metallurgy.
Present cut-off valve is more single due to inner parts structure, is directed to the working environment that High Pressure Difference is cut off, because the pressure reduction of medium is larger.The unlatching moment of valve is comparatively large, and speed of response is slow.And the steering force of high pressure drop operating mode valve function on trim is very large, usually need the actuator of bulky, not only wear and tear trim, affects valve seal, and bring great waste to the manufacture of valve.
Model utility content
In order to overcome above technical deficiency, the utility model provides a kind of High Temperature High Pressure leading type cut-off valve.
The utility model provides a kind of High Temperature High Pressure leading type cut-off valve, it comprises valve body, valve gap, in described valve body, runner is set, valve seat is provided with in valve body, described valve seat arranges sleeve, in described sleeve, main valve plug is set, in described main valve plug, pilot valve is set, described pilot valve bottom extends to form sealing head, the flowing hole suitable with sealing head is provided with in described main valve plug, described main valve plug two bottom sides coordinates with valve seat metal sealing, some first seal rings are set on the upside of described main valve plug and between sleeve, described main valve plug is provided with gland, pilot valve is fixed in main valve plug by described gland, described gland is provided with some pressure relief vents, pilot valve is connected with valve rod, described pilot valve has sealing head and departs from flowing hole and drive the up primary importance of main valve plug and the sealing crown to press through the second place of discharge orifice.
The upper end circumference of described flowing hole arranges the first inclined-plane, and bottom described sealing head, circumference arranges the second inclined-plane, and described sealing head and flowing hole form metal sealing.
Described flowing hole surrounding is recessed to form dashpot downwards.
Described main valve plug surrounding offers groove, makes the cross section of main valve plug for " work " font.
Be provided with sealing inclined-plane on the downside of described main valve plug, inside described valve seat, upper and lower two ends arrange seal boss, and described boss is sealed and matched with sealing inclined-plane.
Sealing inclined-plane on the downside of the sealing surface of described seal boss and main valve plug forms certain angle and forms linear sealing.
Described first seal ring is two that distribute up and down.
The second seal ring is provided with between described valve seat and valve body.
3rd seal ring is set between described gland and sleeve.
Described sleeve is provided with the through hole with flow passage.
The beneficial effect of model utility is: be provided with main valve plug and pilot valve, during work, pilot valve opens pressure release in advance, then pilot valve drives main valve plug to realize the unlatching of large discharge, mechanism's fast response time, long service life, employing metal sealing designs, and can improve the resistant to elevated temperatures effect of whole valve.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is cross section view of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
As depicted in figs. 1 and 2, the utility model provides a kind of High Temperature High Pressure leading type cut-off valve, it comprises valve body 1, valve gap 2, in described valve body 1, runner 3 is set, valve seat 6 is provided with in valve body 1, described valve seat 6 arranges sleeve 5, in described sleeve 5, main valve plug 7 is set, in described main valve plug 7, pilot valve 9 is set, described pilot valve 9 bottom extends to form sealing head, the flowing hole 8 suitable with sealing head is provided with in described main valve plug 7, described main valve plug 7 two bottom sides coordinates with valve seat 6 metal sealing, some first seal rings 12 are set on the upside of described main valve plug 7 and between sleeve 5, described main valve plug is provided with gland 10, pilot valve 9 is fixed in main valve plug 7 by described gland 10, described gland 10 is provided with some pressure relief vents 11, pilot valve 9 is connected with valve rod 4, described pilot valve 9 has sealing head and departs from flowing hole 8 and drive the up primary importance of main valve plug 7 and the sealing crown to press through the second place of discharge orifice 8.
When mechanism is in the working environment of High Pressure Difference, during valve closing, main valve plug moves downward blocks runner, and pilot valve blocks flowing hole downwards, forms heavy caliber sealing, form small-bore sealing between pilot valve and flowing hole between main valve plug and runner; During unlatching, pilot valve is opened in advance, and fraction medium is by relief hole pressure release, and then pilot valve drives main valve plug, main valve plug is departed from valve seat, realizes the unlatching of large discharge.
And can move up and down in main valve plug due to pilot valve, and circumference arranges some pressure relief vents 11 on gland, when opening, flow medium enters main valve plug inside by pressure relief vent, and the gap of opening along pilot valve enters flowing hole, completing pressure release, meet the demand of high-pressure opening, reducing the power that mangetic core assembly is required when opening.
The upper end circumference of described flowing hole arranges the first inclined-plane, and bottom described sealing head, circumference arranges the second inclined-plane, and described sealing head and flowing hole form metal sealing.
Described flowing hole surrounding is recessed to form dashpot downwards, and design dashpot, is back to dashpot at fluid flow, reduces the pressure of lower backflow further, reduces flow to the impact of pilot valve, improve the working life of pilot valve.
Described main valve plug surrounding offers groove 13, makes the cross section of main valve plug for " work " font, because the spool size of cut-off valve is comparatively large, offers groove, can reduce the weight of whole spool, reduce the dynamics of opening in surrounding.
Sealing inclined-plane is provided with on the downside of described main valve plug, inside described valve seat, upper and lower two ends arrange seal boss, described boss is sealed and matched with sealing inclined-plane, adopt metal sealing, the use of seal ring can be reduced, and metal sealing at high temperature also can ensure normal sealing effect, therefore the use of high temperature can be met, sealing inclined-plane on the downside of the sealing surface of described seal boss and main valve plug forms certain angle and forms linear sealing, adopt linear sealing structure, make seal pressure large, valve turns off tight, No leakage.
Described sleeve is provided with the through hole with flow passage, and this through hole can design according to demand, to meet different traffic demands.
Described first seal ring 12 is two that distribute up and down, adopts multiple first seal rings of distribution side by side up and down, improves the sealing on the upside of main valve plug.
Be provided with the second seal ring between described valve seat and valve body, the 3rd seal ring is set between described gland and sleeve.Be provided with the first seal ring between described sleeve and valve seat, between described sleeve and valve gap, be provided with the second seal ring, ensure mechanism seals.
Embodiment should not be considered as restriction of the present utility model, any improvement done based on spirit of the present utility model, all should within protection domain of the present utility model.

Claims (10)

1. a High Temperature High Pressure leading type cut-off valve, it comprises valve body, valve gap, in described valve body, runner is set, valve seat is provided with in valve body, described valve seat arranges sleeve, it is characterized in that: in described sleeve, main valve plug is set, in described main valve plug, pilot valve is set, described pilot valve bottom extends to form sealing head, the flowing hole suitable with sealing head is provided with in described main valve plug, described main valve plug two bottom sides coordinates with valve seat metal sealing, some first seal rings are set on the upside of described main valve plug and between sleeve, described main valve plug is provided with gland, pilot valve is fixed in main valve plug by described gland, described gland is provided with some pressure relief vents, pilot valve is connected with valve rod, described pilot valve has sealing head and departs from flowing hole and drive the up primary importance of main valve plug and the sealing crown to press through the second place of discharge orifice.
2. High Temperature High Pressure leading type cut-off valve according to claim 1, is characterized in that, the upper end circumference of described flowing hole arranges the first inclined-plane, and bottom described sealing head, circumference arranges the second inclined-plane, and described sealing head and flowing hole form metal sealing.
3. High Temperature High Pressure leading type cut-off valve according to claim 1, is characterized in that, described flowing hole surrounding is recessed to form dashpot downwards.
4. High Temperature High Pressure leading type cut-off valve according to claim 1, is characterized in that, described main valve plug surrounding offers groove, makes the cross section of main valve plug for " work " font.
5. High Temperature High Pressure leading type cut-off valve according to claim 1, is characterized in that, be provided with sealing inclined-plane on the downside of described main valve plug, and inside described valve seat, upper and lower two ends arrange seal boss, and described boss is sealed and matched with sealing inclined-plane.
6. High Temperature High Pressure leading type cut-off valve according to claim 5, is characterized in that, the sealing inclined-plane on the downside of the sealing surface of described seal boss and main valve plug forms certain angle and forms linear sealing.
7. High Temperature High Pressure leading type cut-off valve according to claim 1, is characterized in that, described first seal ring is two that distribute up and down.
8. High Temperature High Pressure leading type cut-off valve according to claim 1, is characterized in that, be provided with the second seal ring between described valve seat and valve body.
9. High Temperature High Pressure leading type cut-off valve according to claim 1, is characterized in that, arranges the 3rd seal ring between described gland and sleeve.
10. High Temperature High Pressure leading type cut-off valve according to claim 1, it is characterized in that, described sleeve is provided with the through hole with flow passage.
CN201520532999.4U 2015-07-22 2015-07-22 High temperature high pressure guide formula trip valve Active CN204784776U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520532999.4U CN204784776U (en) 2015-07-22 2015-07-22 High temperature high pressure guide formula trip valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520532999.4U CN204784776U (en) 2015-07-22 2015-07-22 High temperature high pressure guide formula trip valve

Publications (1)

Publication Number Publication Date
CN204784776U true CN204784776U (en) 2015-11-18

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Application Number Title Priority Date Filing Date
CN201520532999.4U Active CN204784776U (en) 2015-07-22 2015-07-22 High temperature high pressure guide formula trip valve

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106195294A (en) * 2016-09-29 2016-12-07 李岑文达 A kind of valve sealing face fluid erosion prevention structure
CN114110224A (en) * 2021-12-07 2022-03-01 湖南省力宇燃气动力有限公司 Explosion-proof valve and explosion-proof device
CN114234039A (en) * 2021-12-01 2022-03-25 武汉格罗夫氢能汽车有限公司 Pilot-operated high-temperature pressure release valve and gas cylinder of hydrogen fuel cell automobile

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106195294A (en) * 2016-09-29 2016-12-07 李岑文达 A kind of valve sealing face fluid erosion prevention structure
CN114234039A (en) * 2021-12-01 2022-03-25 武汉格罗夫氢能汽车有限公司 Pilot-operated high-temperature pressure release valve and gas cylinder of hydrogen fuel cell automobile
CN114234039B (en) * 2021-12-01 2023-03-03 武汉格罗夫氢能汽车有限公司 Pilot-operated high-temperature pressure release valve and gas cylinder of hydrogen fuel cell automobile
CN114110224A (en) * 2021-12-07 2022-03-01 湖南省力宇燃气动力有限公司 Explosion-proof valve and explosion-proof device

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CP03 Change of name, title or address

Address after: 325100 East Ou Industrial Zone, Oubei Town, Yongjia County, Wenzhou City, Zhejiang Province

Patentee after: Jinfeng Fluid Control Technology Co., Ltd.

Address before: 325100 East Ou Industrial Park, North Ou, Yongjia County, Wenzhou City, Zhejiang Province

Patentee before: ZHEJIANG JINFENG AUTOMATION METER CO., LTD.

CP03 Change of name, title or address