CN204127352U - High temperature low moment of torsion middle high-pressure gate valve - Google Patents
High temperature low moment of torsion middle high-pressure gate valve Download PDFInfo
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- CN204127352U CN204127352U CN201420616213.2U CN201420616213U CN204127352U CN 204127352 U CN204127352 U CN 204127352U CN 201420616213 U CN201420616213 U CN 201420616213U CN 204127352 U CN204127352 U CN 204127352U
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- valve rod
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Abstract
The utility model relates to a kind of high temperature low moment of torsion middle high-pressure gate valve.Most gate valve seals valve port by hydrodynamic pressure and wedging power with wedge-type flashboard or parallel gate plate, and when pressure height latus rectum is large, cause in unlatching moment, moment of torsion is very large, valve seat or flap easy damaged.The utility model composition comprises: valve body (1), valve body has hole, hole is built with valve seat (2), valve seat has the conical surface, the conical surface is connected with 2 flap (3) spheres respectively, flap has horizontal hole, horizontal hole is built with 2 Decompression valvess (4), Decompression valves has circular groove, circular groove is built with jump ring (5), in the middle of Decompression valves, there is wedge-type dovetail groove, wedge-type dovetail groove is built with lower valve rod (6), lower valve rod cover has return spring (7), fuse-box body (22) is equipped with in flap outside, upper box cover (21) is equipped with in flap upper end, lower fuse-box body (8) is equipped with in flap lower end, lower fuse-box body has hole, hole is built with lower valve rod.The utility model is used for high temperature low moment of torsion middle high-pressure gate valve.
Description
technical field:
the utility model relates to valve technology field, is specifically related to a kind of high temperature low moment of torsion middle high-pressure gate valve.
background technique:
at present, most gate valve all relies on hydrodynamic pressure and wedging power to seal valve inlet/outlet with wedge-type flashboard or parallel type flashboard, when pressure is higher or latus rectum is larger, because hydrodynamic pressure vertically acts on flap, so cause in unlatching moment, valve opening moment of torsion is very large, valve seat or flap easy damaged.Opening instantaneously because cavitation causes badly damaged to flap, a lot of patented technology adopts different high hardness materials on flap or valve seat for this reason, but still can not effectivelyly solve the problem, and especially under high temperature, high-pressure situations, the problems referred to above are more outstanding simultaneously.
model utility content:
the purpose of this utility model is to provide a kind of high temperature low moment of torsion middle high-pressure gate valve.
above-mentioned object is realized by following technological scheme:
in the low moment of torsion of a kind of high temperature, high pressure sluice valve, its composition comprises: valve body, described valve body has hole, described hole is built with valve seat, described valve seat has the conical surface, the described conical surface is connected with 2 flap spheres respectively, described flap has horizontal hole, described horizontal hole is built with 2 Decompression valvess, described Decompression valves has circular groove, described circular groove is built with jump ring, in the middle of described Decompression valves, there is wedge-type dovetail groove, described wedge-type dovetail groove is built with lower valve rod, described lower valve rod cover has return spring, fuse-box body is equipped with in described flap outside, upper box cover is equipped with in described flap upper end, lower fuse-box body is equipped with in described flap lower end, described lower fuse-box body has hole, described hole is built with described lower valve rod.
described high temperature low moment of torsion middle high-pressure gate valve, described valve inner is equipped with valve gap, described valve body has circular groove, described circular groove is built with card key, and described valve body is connected with support by connecting bolt, and described support has 2 grooves, described groove is built with thrust-bearing, described internal stent is equipped with keying nut, and described keying nut outer cover has handwheel, and locking nut is equipped with in described handwheel upper end.
described high temperature low moment of torsion middle high-pressure gate valve, described keying nut interior is equipped with valve rod, and described valve rod upper end has screw thread, and described valve rod is connected with stop nut by screw thread.
described high temperature low moment of torsion middle high-pressure gate valve, described valve gap has hole, and described hole is built with valve rod, and described valve stem casing has fuse-box gland, described fuse-box gland is connected with described upper box cover by bolt, and described valve rod is through described flap, described upper box cover.
described high temperature low moment of torsion middle high-pressure gate valve, described flap has 2 inclined holes, is interlinked to the outside in described inclined hole and described flap.
beneficial effect:
1. valve body hole of the present utility model is built with valve seat, described valve seat has the conical surface, the described conical surface is connected with flap sphere, the conical surface of described valve seat and the ball face sealing form of flap, for line formula seals firmly, this sealing configuration can be applicable to high temperature cut-off valve, and sealingly secure is reliable, the working life of gate valve can be improved, effective solution gate valve opens the large and cavitation damage of moment of torsion, so be particularly suitable for mesohigh, big orifice valve, due between valve seat and flap, be metal parts between flap and fuse-box body, use so be particularly suitable for high temperature occasion.
flap of the present utility model has horizontal hole, described horizontal hole is built with Decompression valves, in the middle of described Decompression valves, there is wedge-type dovetail groove, described dovetail groove is built with lower valve rod, valve rod can be made directly to control Decompression valves for this structure and flap opens and closes, and wherein said oat tail groove structure can play the effect of opening or closing Decompression valves and flap in advance.
lock cassette upper end of the present utility model is equipped with upper box cover, the diameter of described flap and fuse-box body fit diameter and described valve seat linear sealing place, effectively can form annular differential pressure area, be driven by Decompression valves and flap annular differential pressure area action of hydraulic force, make flap progressively open off-load in advance.
horizontal hole of the present utility model is built with Decompression valves, in the middle of described Decompression valves, there is wedge-type dovetail groove, described dovetail groove is built with lower valve rod, described lower valve rod cover has return spring, this structure can make flap be controlled by lower valve rod and Decompression valves, regains in advance after closing with fuse-box body and stretch out throttle down outlet function again when having unlatching.
valve inner of the present utility model is equipped with valve gap, and described valve body has circular groove, and described circular groove is built with card key, and described valve body is connected with support by connecting bolt, and this Placement structure is simple and convenient, convenient operation, and assembling is reliable.
support of the present utility model has 2 grooves, and described groove is built with thrust-bearing, and described internal stent is equipped with keying nut, and described keying nut outer cover has handwheel, and locking nut is equipped with in described handwheel upper end.Thrust-bearing described in installation can make gate valve rotate freely, convenient operation, installation and removal.
keying nut interior of the present utility model is equipped with valve rod, and described valve rod upper end has screw thread, and described valve rod is connected with stop nut by screw thread, and this linkage structure can make the convenient adjustment of gate valve, and fitting operation is simple.
lower valve rod of the present utility model controls Decompression valves and opens and closes, lower valve rod moves upward, and Decompression valves is opened, and the pressure in fuse-box body is lower than flap outlet side pressure, pressure difference acts on flap annular differential pressure area, flap is inwardly regained, and lower valve rod also makes flap inwardly regain, because flap is opened in advance gradually by Decompression valves simultaneously, so valve body internal pressure reduces gradually, flow releases, and fuse-box body starts to rise subsequently, the light unlatching of valve; Otherwise lower valve rod moves downward, under lower valve rod effect, Decompression valves cuts out flap also closing gate valve outlet simultaneously, and due to hydrodynamic pressure and Decompression valves thrust, flap is closed, valve closing; Driven by Decompression valves and the effect of flap annular differential pressure area, make flap progressively open off-load in advance.
the utility model provides a kind of high temperature low moment of torsion middle high-pressure gate valve, this valve is when valve rod moves up, lower valve rod is utilized first to open Decompression valves on flap, because the endoceliac pressure of fuse-box is lower than the pressure of flap outlet side, so flap is opened under valve rod and the effect of flap differential pressure area, smooth light unlatching after realizing leading off-load, thus gate valve unlatching moment of torsion is effectively solved large, because flap and valve seat adopt ball face sealing, so can cavitation be reduced, because main valve plug and valve seat all adopt hard sealing, be also applicable to high temperature.
accompanying drawing illustrates:
accompanying drawing 1 is structural representation of the present utility model.
accompanying drawing 2 is A-A sectional views of accompanying drawing 1.
embodiment:
embodiment 1:
in the low moment of torsion of a kind of high temperature, high pressure sluice valve, its composition comprises: valve body 1, described valve body has hole, described hole is built with valve seat 2, described valve seat has the conical surface, the described conical surface is connected with 2 flap 3 spheres respectively, described flap has horizontal hole, described horizontal hole is built with 2 Decompression valvess 4, described Decompression valves has circular groove, described circular groove is built with jump ring 5, in the middle of described Decompression valves, there is wedge-type dovetail groove, described wedge-type dovetail groove is built with lower valve rod 6, described lower valve rod cover has return spring 7, fuse-box body 22 is equipped with in described flap outside, upper box cover 21 is equipped with in described flap upper end, lower fuse-box body 8 is equipped with in described flap lower end, described lower fuse-box body has hole, described hole is built with described lower valve rod.
embodiment 2:
high temperature according to embodiment 1 low moment of torsion middle high-pressure gate valve, described valve inner is equipped with valve gap 12, described valve body has circular groove, described circular groove is built with card key 13, and described valve body is connected with support 14 by connecting bolt 15, and described support has 2 grooves, described groove is built with thrust-bearing 16, described internal stent is equipped with and opens and closes nut 17, and described keying nut outer cover has handwheel 18, and locking nut 19 is equipped with in described handwheel upper end.
embodiment 3:
high temperature according to embodiment 1 or 2 low moment of torsion middle high-pressure gate valve, described keying nut interior is equipped with valve rod 11, and described valve rod upper end has screw thread, and described valve rod is connected with stop nut 20 by screw thread.
embodiment 4:
high temperature low moment of torsion middle high-pressure gate valve according to embodiment 1 or 2 or 3, described valve gap has hole, described hole is built with valve rod, described valve stem casing has fuse-box gland 9, described fuse-box gland is connected with described upper box cover by bolt 10, and described valve rod is through described flap, described upper box cover.
embodiment 5:
high temperature low moment of torsion middle high-pressure gate valve according to embodiment 1 or 2 or 3 or 4, described flap has 2 inclined holes, is interlinked to the outside in described inclined hole and described flap.
embodiment 6:
high temperature low moment of torsion middle high-pressure gate valve according to embodiment 1 or 2 or 3 or 4 or 5, described high temperature low moment of torsion middle high-pressure gate valve working principle is as follows:
lower valve rod controls Decompression valves and opens and closes, lower valve rod moves upward, and Decompression valves is opened, and the pressure in fuse-box body is lower than flap outlet side pressure, pressure difference acts on flap annular differential pressure area, flap is inwardly regained, and lower valve rod also makes flap inwardly regain, because flap is opened in advance gradually by Decompression valves simultaneously, so valve body internal pressure reduces gradually, flow releases, and fuse-box body starts to rise subsequently, the light unlatching of valve; Otherwise lower valve rod moves downward, under lower valve rod effect, Decompression valves cuts out flap also closing gate valve outlet simultaneously, and due to hydrodynamic pressure and Decompression valves thrust, flap is closed, valve closing;
embodiment 7:
in the low moment of torsion of high temperature according to embodiment 1 or 2 or 3 or 4 or 5 or 6, high pressure sluice valve, mainly provide in the low moment of torsion of a kind of high temperature, high pressure sluice valve, this valve is when valve rod moves up, lower valve rod is utilized first to open Decompression valves on flap, because the endoceliac pressure of fuse-box is lower than the pressure of flap outlet side, so flap is opened under valve rod and the effect of flap differential pressure area, smooth light unlatching after realizing leading off-load, thus gate valve unlatching moment of torsion is effectively solved large, because flap and valve seat adopt ball face sealing, so can cavitation be reduced, because main valve plug and valve seat all adopt hard sealing, so be also applicable to high temperature.
Claims (5)
1.
in the low moment of torsion of a kind of high temperature, high pressure sluice valve, its composition comprises: valve body, it is characterized in that: described valve body has hole, described hole is built with valve seat, described valve seat has the conical surface, the described conical surface is connected with 2 flap spheres respectively, described flap has horizontal hole, described horizontal hole is built with 2 Decompression valvess, described Decompression valves has circular groove, described circular groove is built with jump ring, in the middle of described Decompression valves, there is wedge-type dovetail groove, described wedge-type dovetail groove is built with lower valve rod, described lower valve rod cover has return spring, fuse-box body is equipped with in described flap outside, upper box cover is equipped with in described flap upper end, lower fuse-box body is equipped with in described flap lower end, described lower fuse-box body has hole, described hole is built with described lower valve rod.
2.
high temperature according to claim 1 low moment of torsion middle high-pressure gate valve, it is characterized in that: described valve inner is equipped with valve gap, described valve body has circular groove, described circular groove is built with card key, and described valve body is connected with support by connecting bolt, and described support has 2 grooves, described groove is built with thrust-bearing, described internal stent is equipped with keying nut, and described keying nut outer cover has handwheel, and locking nut is equipped with in described handwheel upper end.
3.
high temperature according to claim 2 low moment of torsion middle high-pressure gate valve, is characterized in that: described keying nut interior is equipped with valve rod, and described valve rod upper end has screw thread, and described valve rod is connected with stop nut by screw thread.
4.
high temperature according to claim 2 low moment of torsion middle high-pressure gate valve, it is characterized in that: described valve gap has hole, described hole is built with valve rod, described valve stem casing has fuse-box gland, described fuse-box gland is connected with described upper box cover by bolt, and described valve rod is through described flap, described upper box cover.
5.
high temperature according to claim 1 and 2 low moment of torsion middle high-pressure gate valve, is characterized in that: described flap has 2 inclined holes, is interlinked to the outside in described inclined hole and described flap.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420616213.2U CN204127352U (en) | 2014-10-23 | 2014-10-23 | High temperature low moment of torsion middle high-pressure gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420616213.2U CN204127352U (en) | 2014-10-23 | 2014-10-23 | High temperature low moment of torsion middle high-pressure gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204127352U true CN204127352U (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420616213.2U Expired - Fee Related CN204127352U (en) | 2014-10-23 | 2014-10-23 | High temperature low moment of torsion middle high-pressure gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204127352U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506509A (en) * | 2018-06-27 | 2018-09-07 | 上海阀门厂股份有限公司 | A kind of gate valve sealing structure |
| CN112049954A (en) * | 2020-09-09 | 2020-12-08 | 济南高瓴机械科技有限公司 | Gate valve |
-
2014
- 2014-10-23 CN CN201420616213.2U patent/CN204127352U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506509A (en) * | 2018-06-27 | 2018-09-07 | 上海阀门厂股份有限公司 | A kind of gate valve sealing structure |
| CN112049954A (en) * | 2020-09-09 | 2020-12-08 | 济南高瓴机械科技有限公司 | Gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 Termination date: 20161023 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |