CN203348564U - Large-diameter double-valve-flap pressure relief throttling valve - Google Patents

Large-diameter double-valve-flap pressure relief throttling valve Download PDF

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Publication number
CN203348564U
CN203348564U CN 201320416974 CN201320416974U CN203348564U CN 203348564 U CN203348564 U CN 203348564U CN 201320416974 CN201320416974 CN 201320416974 CN 201320416974 U CN201320416974 U CN 201320416974U CN 203348564 U CN203348564 U CN 203348564U
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CN
China
Prior art keywords
valve
flap
throttling
common
valve rod
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320416974
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Chinese (zh)
Inventor
徐永明
胡永祥
郭玉林
赵怀忠
朱祥
韩健莉
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NANTONG STATE ELECTRIC POWER VALVE CO Ltd
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Application filed by NANTONG STATE ELECTRIC POWER VALVE CO Ltd filed Critical NANTONG STATE ELECTRIC POWER VALVE CO Ltd
Priority to CN 201320416974 priority Critical patent/CN203348564U/en
Application granted granted Critical
Publication of CN203348564U publication Critical patent/CN203348564U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to the field of throttling valves, in particular to a large-diameter double-valve-flap pressure relief throttling valve. The large-diameter double-valve-flap pressure relief throttling valve comprises a valve body, a valve flap, a valve cover, a valve rod and a hand wheel, wherein the valve flap comprises a common valve flap, a throttling valve flap, a common valve flap cover, a throttling valve flap cover and a split ring. The upper end of the throttling valve flap is a cylinder, the lower end of the throttling valve flap is a half-ellipse, a cylindrical groove is arranged in the cylinder, a transverse pressure relief hole is arranged at the connecting position of the cylinder and the half-ellipse, a vertical pressure relief hole is arranged in the half-ellipse, and the lower end of the cylinder and the valve body position are provided with seal faces. The cylindrical groove is formed in the middle of the common valve flap, the common valve flap is installed in a cylindrical groove of the throttling valve flap, seal faces are located at the lower end of the common valve flap and the upper end of the vertical pressure relief hole of the throttling valve flap, and the valve rod is inserted into the cylindrical groove of the common valve flap in a connecting mode. The large-diameter double-valve-flap pressure relief throttling valve has the advantages of being good in sealing performance, small in operation force moment, long in service life and the like.

Description

Heavy caliber Double-clack pressure-relief type throttle valve
Technical field
The utility model relates to the throttle valve valve field, is specifically related to a kind of heavy caliber Double-clack pressure-relief type throttle valve.
Background technique
Throttle valve is by changing throttling cross section or chock length to control the valve of fluid flow.The form structure of throttle valve and stop valve indistinction, just the shape of their open-shut device is different.It is streamlined that the open-shut device of throttle valve is mostly circular cone, changes channel cross-sectional area by it and reach adjust flux and pressure.Throttle valve is for do to reduce pressure medium in the great situation of Pressure Drop.Medium flow velocity between throttling flap and valve seat is very large, to cause these part surfaces, damages very soon-be so-called cavitation phenomenon.In order to reduce the cavitation erosion impact as far as possible, flap adopts cavitation material (alloyed steel manufacture) and makes the streamlined cone that top angle is 140~180, and this can also make flap that larger Lift can be arranged, and generally is not recommended in throttling under small gap.
The conventional throttle valve is mainly used in the mobile pipeline of Qi road, field, water route, the oil circuits etc. such as petrochemical industry, On The Oil And Gas Transportation, mine metallurgy, electric power, for connecting and block ducted medium, guarantees the normal operation of equipment Pipe-Line.
The MEDIA FLOW of throttle valve commonly used is to being generally low in and high out, but this kind of MEDIA FLOW is to several shortcomings below existing for high pressure and the larger valve of bore: 1. poor sealing performance.2. operational torque is large.3. working life is short etc.
The model utility content
In order to address the above problem, the utility model proposes a kind of heavy caliber Double-clack pressure-relief type throttle valve, the characteristics such as good seal performance, operational torque are little, long service life.
In order to reach above-mentioned model utility purpose, the utility model proposes following technological scheme:
Heavy caliber Double-clack pressure-relief type throttle valve, it comprises valve body, flap, valve gap, valve rod and handwheel, flap is loaded in the middle of valve body, valve rod is connected to the flap upper end, valve gap overlapped valve rod and was pressed on valve body, by double threaded screw and nut, link together, handwheel is fixed on the valve rod upper end by nut, described flap comprises common flap, the throttling flap, common valve clack cover, throttling valve clack cover and divided ring, described throttling flap upper end is cylindrical, lower end is half elliptic, cylindrical the inside has cylinder shape groove, cylindrical have horizontal relief hole with the half elliptic joint, the half elliptic the inside has vertical relief hole, and there is sealing surface at cylindrical lower end and valve body place, have cylinder shape groove in the middle of described common flap, common flap is loaded in the cylinder shape groove of throttling flap, and there is sealing surface the vertical relief hole upper end of common flap lower end and throttling flap, and the valve rod connection is inserted in the circular groove of common flap, divided ring is positioned at the valve rod lower end, is loaded in the middle of valve rod and common flap, the divided ring top has common valve clack cover, common valve clack cover to be pressed in common flap upper end, between throttling flap and valve rod, the common flap side of covering is the throttling valve clack cover, and the throttling valve clack cover is pressed in throttling flap upper end, between valve body and valve rod.
Between described valve gap and valve body, seal ring is housed, sealing, filler and gland also are housed between valve gap and valve rod, the valve gap upper end is provided with pressing plate, upper sealing is loaded on valve gap lower end and valve body joint, filler is loaded on above sealing, and gland is pressed in the filler top by pressing plate, and pressing plate is pressed in the valve gap upper end, and be fixed together by straight pin, swing bolt and nut and valve body, straight pin is fixed on the valve gap upper end to swing bolt one end.
Described valve rod upper end also is provided with a sealing cover, and sealing cover is enclosed within valve rod and is pressed in the pressing plate top outward, by Stem Mut, is fixed and clamped, and the Stem Mut upper end also is provided with Cock screw.
What described heavy caliber Double-clack pressure-relief type throttle valve the inside runner mouth was high is import, and what the runner mouth was low is outlet, and MEDIA FLOW is to being high in and low out.
Advantage of the present utility model:
1) change MEDIA FLOW to former " low in and high out ", existing " high in and low out ";
2) valve flap structure: former single valve clack structure, existing Double-clack structure;
3) increase relief hole on the throttling flap, reduce operational torque;
4) reduce the valve rod size or reduce the operation equipment specification, reducing costs;
5) improve the valve seal performance, reduce operational torque, improve the working life of valve etc.
The accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is partial enlarged drawing of the present utility model.
Embodiment
For the utility model is further illustrated to introduction, below in conjunction with Figure of description, illustrate:
With reference to accompanying drawing 1 and Fig. 2, heavy caliber Double-clack pressure-relief type throttle valve, it comprises valve body 1, flap, valve gap 23, valve rod 7 and handwheel 21, flap is loaded in the middle of valve body 1, valve rod 7 is connected to the flap upper end, valve gap 23 overlapped valve rod 7 and was pressed on valve body 1, by double threaded screw 12 and nut 11, link together, handwheel is fixed on valve rod 7 upper ends by nut 22, described flap comprises common flap 3, throttling flap 2, common valve clack cover 5, throttling valve clack cover 6 and divided ring 4, described throttling flap 6 upper ends are cylindrical, lower end is half elliptic, cylindrical the inside has cylinder shape groove, cylindrical have horizontal relief hole 24 with the half elliptic joint, the half elliptic the inside has vertical relief hole 25, and there is sealing surface 27 at cylindrical lower end and valve body place, have cylinder shape groove in the middle of described common flap 3, common flap 3 is loaded in the cylinder shape groove of throttling flap 2, there is sealing surface 26 vertical relief hole 25 upper ends of common flap 3 lower ends and throttling flap 2, and valve rod 7 connections are inserted in the circular groove of common flap 3, divided ring 4 is positioned at valve rod 7 lower ends, is loaded on valve rod 7 middle with common flap 3, there is common valve clack cover 5 divided ring 4 tops, and common valve clack cover 5 is pressed in common flap 3 upper ends, between throttling flap 2 and valve rod 7, common valve clack cover 5 tops are throttling valve clack covers 6, and throttling valve clack cover 6 is pressed in throttling flap 2 upper ends, between valve body 1 and valve rod 7.
Between described valve gap 23 and valve body 1, seal ring 8 is housed, sealing 9, filler 10 and gland 15 also are housed between valve gap 23 and valve rod 7, valve gap 23 upper ends are provided with pressing plate 16, upper sealing 9 is loaded on valve gap 23 lower ends and valve body 1 joint, filler 10 is loaded on above sealing 9, gland 15 is pressed in filler 10 tops by pressing plate 16, pressing plate 16 is pressed in valve gap 23 upper ends, and be fixed together with valve body 1 by straight pin 13, swing bolt 14 and nut 17, straight pin 13 is fixed on valve gap 23 upper ends to swing bolt 14 1 ends.
Described valve rod 7 upper ends also are provided with a sealing cover 18, and sealing cover 18 is enclosed within outside valve rod 7 and is pressed in pressing plate 16 tops, by Stem Mut 19, is fixed and clamped, and Stem Mut 19 upper ends also are provided with Cock screw 20.
What described heavy caliber Double-clack pressure-relief type throttle valve the inside runner mouth was high is import, and what the runner mouth was low is outlet, and MEDIA FLOW is to being high in and low out.

Claims (4)

1. heavy caliber Double-clack pressure-relief type throttle valve, it comprises valve body, flap, valve gap, valve rod and handwheel, flap is loaded in the middle of valve body, valve rod is connected to the flap upper end, valve gap overlapped valve rod and was pressed on valve body, by double threaded screw and nut, link together, handwheel is fixed on the valve rod upper end by nut, it is characterized in that described flap comprises common flap, the throttling flap, common valve clack cover, throttling valve clack cover and divided ring, described throttling flap upper end is cylindrical, lower end is half elliptic, cylindrical the inside has cylinder shape groove, cylindrical have horizontal relief hole with the half elliptic joint, the half elliptic the inside has vertical relief hole, and there is sealing surface at cylindrical lower end and valve body place, have cylinder shape groove in the middle of described common flap, common flap is loaded in the cylinder shape groove of throttling flap, and there is sealing surface the vertical relief hole upper end of common flap lower end and throttling flap, and the valve rod connection is inserted in the circular groove of common flap, divided ring is positioned at the valve rod lower end, is loaded in the middle of valve rod and common flap, the divided ring top has common valve clack cover, common valve clack cover to be pressed in common flap upper end, between throttling flap and valve rod, the common flap side of covering is the throttling valve clack cover, and the throttling valve clack cover is pressed in throttling flap upper end, between valve body and valve rod.
2. heavy caliber Double-clack pressure-relief type throttle valve according to claim 1, it is characterized in that, between described valve gap and valve body, seal ring is housed, sealing, filler and gland also are housed between valve gap and valve rod, the valve gap upper end is provided with pressing plate, upper sealing is loaded on valve gap lower end and valve body joint, filler is loaded on above sealing, gland is pressed in the filler top by pressing plate, pressing plate is pressed in the valve gap upper end, and be fixed together by straight pin, swing bolt and nut and valve body, straight pin is fixed on the valve gap upper end to swing bolt one end.
3. heavy caliber Double-clack pressure-relief type throttle valve according to claim 1, it is characterized in that described valve rod upper end also is provided with a sealing cover, sealing cover is enclosed within valve rod and is pressed in the pressing plate top outward, by Stem Mut, is fixed and clamped, and the Stem Mut upper end also is provided with Cock screw.
4. heavy caliber Double-clack pressure-relief type throttle valve according to claim 1, it is characterized in that described heavy caliber Double-clack pressure-relief type throttle valve the inside runner mouth high be import, what the runner mouth was low is outlet, MEDIA FLOW is to being high in and low out.
CN 201320416974 2013-07-15 2013-07-15 Large-diameter double-valve-flap pressure relief throttling valve Expired - Fee Related CN203348564U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320416974 CN203348564U (en) 2013-07-15 2013-07-15 Large-diameter double-valve-flap pressure relief throttling valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320416974 CN203348564U (en) 2013-07-15 2013-07-15 Large-diameter double-valve-flap pressure relief throttling valve

Publications (1)

Publication Number Publication Date
CN203348564U true CN203348564U (en) 2013-12-18

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Application Number Title Priority Date Filing Date
CN 201320416974 Expired - Fee Related CN203348564U (en) 2013-07-15 2013-07-15 Large-diameter double-valve-flap pressure relief throttling valve

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107314116A (en) * 2017-06-23 2017-11-03 南通国电电站阀门股份有限公司 A kind of overcritical pneumatic cut-off throttle valve of heavy caliber pressure-releasing type

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107314116A (en) * 2017-06-23 2017-11-03 南通国电电站阀门股份有限公司 A kind of overcritical pneumatic cut-off throttle valve of heavy caliber pressure-releasing type

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

Address after: 226557, Taoyuan West Road, Chengnan street, Rugao City, Jiangsu, Nantong province 1

Patentee after: Nantong State Electric Power Valve Co., Ltd.

Address before: 226557, Taoyuan West Road, Taoyuan Town, Nantong City, Jiangsu, Rugao 1

Patentee before: Nantong State Electric Power Valve Co., Ltd.

CP03 Change of name, title or address
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131218

Termination date: 20200715

CF01 Termination of patent right due to non-payment of annual fee