CN102889391A - Motor-driven high-pressure welding end pressure relief type double disc gate valve - Google Patents
Motor-driven high-pressure welding end pressure relief type double disc gate valve Download PDFInfo
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- CN102889391A CN102889391A CN2012103920088A CN201210392008A CN102889391A CN 102889391 A CN102889391 A CN 102889391A CN 2012103920088 A CN2012103920088 A CN 2012103920088A CN 201210392008 A CN201210392008 A CN 201210392008A CN 102889391 A CN102889391 A CN 102889391A
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- flashboard
- gate valve
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- pressure relief
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Abstract
The invention discloses a motor-driven high-pressure welding end pressure relief type double disc gate valve, and belongs to the field of pipeline control equipment. The gate valve is composed of a valve body, a valve base, a flashboard, a valve rod, a padding chamber, a sealing ring, a padding, an equalizing ring, a pendant collet, a caulking ring, a mounting plate, a pressing sleeve, a press plate and a support in a connecting manner. The gate valve changes the traditional gate valve two-way sealing into one-way sealing with a pressure relief design of 2500 Lb pressure, and the flashboard of one end of a media inlet is provided with a pressure relief hole of a penetrating flashboard; and when the gate valve is closed, the pressure relief hole is communicated with cavities on the bottom and upper part of the valve body and an inner hole of the valve base, and the high pressure in the cavities of the valve body is released through the pressure relief hole. The motor-driven high-pressure welding end pressure relief type double disc gate valve provided by the invention has the advantages that the safety feature of a large-caliber high-pressure gate valve is improved, the structure is simple, the processing is convenient and the manufacturing cost is low.
Description
Technical field
The present invention relates to a kind of pipe control equipment, more particularly, the present invention relates to a kind of driven high voltage power welding end unloading type double-flashboard gate valve.
Background technique
Gate valve is industry a kind of pipe control equipment commonly used, traditional gate valve design be two way sealed, pressure below 1500Lb, with this understanding operation, gate valve is safe.But some industry equipment need add the bore of large pipeline, by 14 original " changing 16 into ", the gate valve supporting with it be corresponding increasing also, pressure medium also strengthens thereupon, reach 2500Lb, gate valve need bear high pressure, has larger potential safety hazard, therefore need to design pressure relief device in the gate valve of Large Diameter Pipeline, high pressure.
Summary of the invention
The purpose of the present invention's invention is to overcome the deficiencies in the prior art, and a kind of driven high voltage power welding end unloading type double-flashboard gate valve is provided.
The purpose of the present invention's invention is achieved through the following technical solutions:
A kind of driven high voltage power welding end unloading type double-flashboard gate valve is connected and composed by valve body, valve seat, flashboard, valve rod, packing ring, seal ring, filler, pressure ring, pendant collet, spacer ring, dunnage, gland, pressing plate, support etc.The double-flashboard of described flashboard for being composed of a fixed connection by two shoe brake plates, its cross section is H shape, and two inclined-planes that end face is big up and small down that flashboard matches with valve seat, its tilt angle are 5 °; Two supporting end faces of described valve seat and flashboard are inclined-plane wide at the top and narrow at the bottom, and its tilt angle is 5 °; Described flashboard is provided with the pressure relief vent that connects flashboard below medium import one end, described pressure relief vent is communicated with valve body bottom cavity and valve seat endoporus when gate valve is closed, decide because of the pressure of medium in the aperture of pressure relief vent, and when pressure medium was 2000Lb to 2500Lb, the aperture was 2 cm to 3cm; When pressure medium was 1500Lb to 2000Lb, the aperture was 1cm to 2cm; Described valve body bottom cavity connects the valve body upper cavity; Described flashboard and the valve seat end face supporting with it are sealing surface, are air-tight state when gate valve is closed.It is vertical that described pressure relief vent and the sealing surface of flashboard are 90 ° of angles.The up and down two ends of described flashboard respectively are provided with the fixed block that connects two shoe brake plates.Described fixed block is in T shape, and perpendicular of putting is fixedly connected with in the middle groove of two shoe brake plates, horizontal two ends that are fixedly connected with two shoe brake plates.
Compared with prior art, the present invention has following beneficial effect;
1. heavy caliber, high pressure gate valve Operation safety have been improved;
2. simple in structure, easy to process and reduce production costs.
Description of drawings
Fig. 1 is driven high voltage power welding end unloading type double-flashboard gate valve schematic diagram.
Among the figure: valve body 1, valve seat 2, flashboard 3, valve rod 4, filler chamber 5, seal ring 6, filler 7, piezometer ring 8, pendant collet 9, spacer ring 10, dunnage 11, gland 12, pressing plate 13, support 14, pressure relief vent 15, valve body bottom cavity 16-1, valve body upper cavity 16-2, sealing surface 17, fixed block 18.
Embodiment
Below in conjunction with drawings and Examples substance of the present invention is described in further detail:
As shown in Figures 1 and 2: a kind of driven high voltage power welding end unloading type double-flashboard gate valve is connected and composed by valve body 1, valve seat 2, flashboard 3, valve rod 4, filler chamber 5, seal ring 6, filler 7, piezometer ring 8, pendant collet 9, spacer ring 10, dunnage 11, gland 12, pressing plate 13 and support 14.Traditional gate valve design is two way sealed, and pressure moves below 1500Lb with this understanding, and gate valve safety is without anxiety.But some industry equipment need add the bore of large pipeline, and by 14 original " changing 16 into ", the gate valve supporting with it be corresponding increasing also, and pressure medium also strengthens thereupon, reaches 2500Lb, and gate valve need bear high pressure, also has simultaneously larger potential safety hazard.Therefore the flashboard 2 at medium import one end is provided with pressure relief vent 15, and pressure relief vent 15 is communicated with the cavity 16-1 of valve body 1 bottom, and the cavity 16-1 of valve body 1 bottom is communicated with the cavity 16-2 on valve body 1 top; Valve seat 2 end faces and with it supporting flashboard 3 end faces be sealing surface 17, therefore when gate valve is closed, sealing surface 17 can rely on pressure medium to seal, and the valve seat 2 that namely relies on pressure medium that the sealing surface 17 of flashboard 3 is pressed to opposite side guarantees the sealing of sealing surface 17.The high pressure that the interior 16-1 of valve body 1 cavity this moment, 16-2 pressure medium and medium expanded by heating produce can bring hidden danger to the safety of gate valve such as not release.Pressure relief vent has been arranged, and pressure medium is just progressively subdued through pressure relief vent 15 from valve body 1 cavity 16-1,16-2, plays the effect of release, guarantees the safe operation of gate valve.Decide because of the pressure medium size in the aperture of pressure relief vent 15, and the aperture is too small, is unfavorable for the gate valve fast pressure relief; The aperture is excessive, can affect again gate valve and reach the with it sealing effect of supporting sealing surface of seat 17.When pressure medium was 2000Lb to 2500Lb, the aperture was 2 cm to 3cm; When pressure medium was 1500Lb to 2000Lb, the aperture was 1cm to 2cm.It is vertical that pressure relief vent 15 and flashboard sealing surface 17 are 90 ° of angles, and when closing gate valve, an end one end high, that lead to valve seat that pressure relief vent 15 is in the valve cavity is low, design like this, and also be in order to reach the effect of fast pressure relief.When gate valve is opened initial, produce whirlpool at flashboard 3 back sides, easily cause erosion and the vibrations of flashboard 3, also fragile sealing surface of seat 17, therefore, the fixed block 18 that connects two shoe brake plates 3 is set at the up and down two ends of flashboard 3, in order to fixing flashboard 3, make it reduce vibrations, avoid the damage to sealing surface of seat 17.
Claims (4)
1. driven high voltage power welding end unloading type double-flashboard gate valve, connected and composed by valve body, valve seat, flashboard, valve rod, packing ring, seal ring, filler, pressure ring, pendant collet, spacer ring, dunnage, gland, pressing plate, support etc., it is characterized in that: the double-flashboard of described flashboard for being composed of a fixed connection by two shoe brake plates, its cross section is H shape, two inclined-planes that end face is big up and small down that flashboard matches with valve seat, its tilt angle is 5 °; Two supporting end faces of described valve seat and flashboard are inclined-plane wide at the top and narrow at the bottom, and its tilt angle is 5 °; Described flashboard is provided with the pressure relief vent that connects flashboard below medium import one end, described pressure relief vent is communicated with valve body bottom cavity and valve seat endoporus when gate valve is closed, decide because of the pressure of medium in the aperture of pressure relief vent, and when pressure medium was 2000Lb to 2500Lb, the aperture was 2 cm to 3cm; When pressure medium was 1500Lb to 2000Lb, the aperture was 1cm to 2cm; Described valve body bottom cavity connects the valve body upper cavity; Described flashboard and the valve seat end face supporting with it are sealing surface, are air-tight state when gate valve is closed.
2. a kind of driven high voltage power welding end unloading type double-flashboard gate valve according to claim 1 is characterized in that: it is vertical that described pressure relief vent and the sealing surface of flashboard are 90 ° of angles.
3. a kind of driven high voltage power welding end unloading type double-flashboard gate valve according to claim 1 is characterized in that: the up and down two ends of described flashboard respectively are provided with the fixed block that connects two shoe brake plates.
4. a kind of driven high voltage power welding end unloading type double-flashboard gate valve according to claim 3, it is characterized in that: described fixed block is in T shape, and perpendicular of putting is fixedly connected with in the groove in the middle of the two shoe brake plates, horizontal two ends that are fixedly connected with two shoe brake plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210392008.8A CN102889391B (en) | 2012-10-16 | 2012-10-16 | Motor-driven high-pressure welding end pressure relief type double disc gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210392008.8A CN102889391B (en) | 2012-10-16 | 2012-10-16 | Motor-driven high-pressure welding end pressure relief type double disc gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102889391A true CN102889391A (en) | 2013-01-23 |
| CN102889391B CN102889391B (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210392008.8A Active CN102889391B (en) | 2012-10-16 | 2012-10-16 | Motor-driven high-pressure welding end pressure relief type double disc gate valve |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701761A (en) * | 2017-11-21 | 2018-02-16 | 盐城市大丰奥凯流体机械有限公司 | Bypass type valve and fluid cut-off device |
| CN108798594A (en) * | 2018-06-06 | 2018-11-13 | 东北石油大学 | Special pressure relief device in Downhole Construction |
| CN111677895A (en) * | 2020-06-18 | 2020-09-18 | 南通国电阀门科技有限公司 | Multi-bypass pressure relief type gate valve of high-pressure forge welding structure for nuclear power |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2522105A1 (en) * | 1982-02-20 | 1983-08-26 | Babcock Werke Ag | THE STOP VALVE |
| WO1992021901A1 (en) * | 1991-05-29 | 1992-12-10 | Babcock Sempell Ag | Parallel slide gate valve |
| CN2833278Y (en) * | 2005-07-26 | 2006-11-01 | 兰州理工大学 | Disc connecting structure for embedded double disc gate valve |
| CN201526691U (en) * | 2009-06-23 | 2010-07-14 | 汪玉奎 | Self-relief gate valve |
| CN201992103U (en) * | 2011-04-13 | 2011-09-28 | 福建菲达阀门有限公司 | Novel automatic pressure relief wedge gate valve |
-
2012
- 2012-10-16 CN CN201210392008.8A patent/CN102889391B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2522105A1 (en) * | 1982-02-20 | 1983-08-26 | Babcock Werke Ag | THE STOP VALVE |
| WO1992021901A1 (en) * | 1991-05-29 | 1992-12-10 | Babcock Sempell Ag | Parallel slide gate valve |
| CN2833278Y (en) * | 2005-07-26 | 2006-11-01 | 兰州理工大学 | Disc connecting structure for embedded double disc gate valve |
| CN201526691U (en) * | 2009-06-23 | 2010-07-14 | 汪玉奎 | Self-relief gate valve |
| CN201992103U (en) * | 2011-04-13 | 2011-09-28 | 福建菲达阀门有限公司 | Novel automatic pressure relief wedge gate valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701761A (en) * | 2017-11-21 | 2018-02-16 | 盐城市大丰奥凯流体机械有限公司 | Bypass type valve and fluid cut-off device |
| CN108798594A (en) * | 2018-06-06 | 2018-11-13 | 东北石油大学 | Special pressure relief device in Downhole Construction |
| CN111677895A (en) * | 2020-06-18 | 2020-09-18 | 南通国电阀门科技有限公司 | Multi-bypass pressure relief type gate valve of high-pressure forge welding structure for nuclear power |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102889391B (en) | 2014-02-19 |
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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. |
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