CN103148231A - High-temperature high-pressure parallel double-gate valve gate pair and assembling method thereof - Google Patents
High-temperature high-pressure parallel double-gate valve gate pair and assembling method thereof Download PDFInfo
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- CN103148231A CN103148231A CN2013100897544A CN201310089754A CN103148231A CN 103148231 A CN103148231 A CN 103148231A CN 2013100897544 A CN2013100897544 A CN 2013100897544A CN 201310089754 A CN201310089754 A CN 201310089754A CN 103148231 A CN103148231 A CN 103148231A
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Abstract
The invention relates to a gate pair of a high-temperature high-voltage double-gate valve, and the gate pair mainly comprises a gate support, a left gate, a right gate and a returning spring, wherein the left gate is provided with a decompression hole, and the corresponding position of the right gate is provided with a threaded blind hole; and the invention also relates to a method for assembling the gate pair, and the method comprises the following steps that a clamping screw is screwed after the gate pair is well assembled, and the left gate and the right gate are assembled when the width of the lower part of the left gate and the right gate is smaller than the width of a valve seat; when in assembling, the lower part of the gate assembly is lightly arranged between the valve seats after being aligned, the lower part of the gate is appropriately pushed downwards after the lower part of the gate enters the valve seat until the gate pair and the valve seat stay on a designed closing position; and after the assembling, the clamping screw is unscrewed, and the function of the decompression hole on the left gate is restored. The gate pair and the assembling method have the advantages that the decompression hole of the gate is reasonably used as a clamping screw hole, and the shape of the decompression hole is appropriately adjusted, so that the assembling process is smooth and reliable by adopting the compression screw to press the gate pair.
Description
Technical field
The present invention relates to a kind of High Temperature High Pressure parallel double-flashboard gate valve flashboard secondary, also relate to a kind of method of utilizing above-mentioned flashboard pair to assemble.
Background technique
The High Temperature High Pressure parallel double-flashboard gate valve has the advantages such as sealability excellence, high temperature are not stuck, driving moment is little, manufacturing is easy to maintenance, thereby is used widely at high temperature and high pressure conditions such as thermal power plant's main steam and main feedwater.
For preventing that lumen from boosting extremely, cause valve to open and cause the accident, generally at upstream side flashboard design relief hole, in maintenance, cavity pressure is consistent with valve system pressure.Because considering pressure surge, generally adopt the way of spring-compensating during design, namely design one group of cylindrical spring and be uniformly distributed in the flashboard inside circumference, guarantee the evenly identical sealing of flashboard and valve seat.Elastic force effect due to spring, about when making assembling, flashboard free state width is greater than width between valve body and valve seat, cause difficulty to assembling, the general following methods that adopts of assembling in the past: flashboard lower end specialized designs auxiliary hole, technology groove or cylindrical step, import valve seat after utilizing clamping plate to clamp the left and right flashboard, and then withdraw from clamping plate; These methods need the special clamping plate of making, and clamping plate need the specialized designs manufacturing, and clamping plate withdraw from also trouble, and smaller diameter valve possibly can't design clamping plate.How will be reasonably a difficult problem of plant produced and site examining and repairing process between the secondary importing of flashboard valve seat always.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of can be quick and convenient reasonably with secondary flashboard pair and the assembly method thereof that imports between valve seat of flashboard.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of High Temperature High Pressure parallel double-flashboard gate valve flashboard is secondary, its innovative point is: mainly comprise flashboard support, left flashboard, right flashboard and Returnning spring, left and right flashboard is arranged on the flashboard support, be connected with Returnning spring between left and right flashboard, have relief hole on described left flashboard, described relief hole be shaped as counterbore, corresponding position at right flashboard is provided with tapped blind hole simultaneously, and the size of described tapped blind hole is less than the size of relief hole.
A kind of method of utilizing above-mentioned flashboard pair to assemble, its innovative point is: described step is: a) at first that the secondary assembling of flashboard is complete;
B) be screwed into clamping screw from left flashboard, on clamping screw and right flashboard, the tapped blind hole of opening matches, along with tightening of clamping screw, left and right flashboard lower width is dwindled gradually, while pressed home spring, flashboard position, both sides is by parallel design, become wide at the top and narrow at the bottom, angulation between the flashboard of both sides;
C), assemble during less than the valve seat width when the lower width of left and right flashboard;
D) when assembling, put into gently between valve seat after the flashboard assembly bottom is aligned, after left and right flashboard bottom enters valve seat and puts in place, more suitably firmly advance downwards, until flashboard is secondary be in the design closed position with valve seat till;
E) complete assembling after, with the lengthening inner hexagon spanner clamping screw of back-outing, recover the relief hole function on the flashboard of left side from the valve body left channel, make the sealing surface of left and right flashboard be close to sealing surface of seat by Returnning spring simultaneously.
The invention has the advantages that: rationally utilize the flashboard relief hole as the clamping screw hole, suitably design modifying relief hole shape, start with from the method that adopts housing screw to compress the flashboard pair, makes assembly process become reliable smoothly.
Description of drawings
Fig. 1 is the schematic diagram of the High Temperature High Pressure parallel double-flashboard gate valve in the present invention.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Embodiment
By schematic diagram shown in Figure 1 as can be known, the High Temperature High Pressure parallel double-flashboard gate valve in the present invention comprises that mainly valve body 1, valve rod 8, valve gap 7, valve seat 2 and flashboard are secondary.
The upper end of valve body 1 is provided with valve gap 7, valve gap 7 is by being fixed between screw 9 and valve body 1, valve seat 2 is arranged on the inside of valve body 1, valve rod 8 passes in the inner chamber that valve gap 7 stretches into valve body 1 from top to bottom, be provided with packing cavity 10 between valve rod 8 and valve gap 7, the upper end of packing cavity 10 is provided with gland 12, and gland 12 is fixed by screw 11 and valve gap 7, is provided with the flashboard pair in the bottom of valve rod 8.
by schematic diagram shown in Figure 2 as can be known, the flashboard pair mainly comprises flashboard support 5, left flashboard 6 and right flashboard 3, flashboard support 5 is fixedly connected with the bottom of valve rod 8, left flashboard 6 is arranged on flashboard support 5 with right flashboard 3, left flashboard 6 matches with the sealing surface of right flashboard 3 and the sealing surface of valve seat 2, be provided with Returnning spring 4 between left flashboard 6 and right flashboard 3, have relief hole 20 on left flashboard 6, this relief hole 20 be shaped as counterbore, the size of the size of relief hole 20 and clamping screw 21 matches, corresponding part at right flashboard 3 has tapped blind hole 22 simultaneously, the size of tapped blind hole 22 is less than the size of relief hole 20, and tapped blind hole 22 matches with clamping screw 21, clamping screw 21 in the present embodiment can adopt socket head screw or outer-hexagonal bolts, and after installing, the head of clamping screw 21 must not be higher than the sealing surface of left flashboard 6.
When being fitted into the flashboard pair between valve seat 2, at first the relief hole 20 from left flashboard 6 is screwed into clamping screw 21, along with tightening of clamping screw 21, left flashboard 6 dwindles gradually with the lower width of right flashboard 3, while pressed home spring 4, and left flashboard 6 becomes wide at the top and narrow at the bottom with the position of right flashboard 3 by parallel design, angulation between left flashboard 6 and right flashboard 3,, show to tighten to put in place during less than the width of valve seat 2 when the lower width of left flashboard 6 and right flashboard 3, can assemble.During assembling, put into gently between valve seat 2 after the flashboard assembly bottom is aligned, carry out after valve seat 2 puts in place in left flashboard 6 and the bottom of right flashboard 3, more suitably firmly advance downwards, until till flashboard auxiliary-seat 2 is in the design closed position.After the flashboard pair is completed assembling, with the lengthening hexagon wrench clamping screw 21 of back-outing, to recover the decompression function on left flashboard, make left flashboard 6 and the sealing surface of right flashboard 3 be close to the sealing surface of valve seat 2 by Returnning spring 4 simultaneously from the left channel of valve body 1.
Claims (2)
1. a High Temperature High Pressure parallel double-flashboard gate valve flashboard is secondary, mainly comprise flashboard support, left flashboard, right flashboard and Returnning spring, left and right flashboard is arranged on the flashboard support, be connected with Returnning spring between left and right flashboard, it is characterized in that: have relief hole on described left flashboard, described relief hole be shaped as counterbore, the corresponding position at right flashboard is provided with tapped blind hole simultaneously, the size of described tapped blind hole is less than the size of relief hole.
2. method that adopts flashboard pair claimed in claim 1 to assemble, it is characterized in that: described step is: a) at first that the secondary assembling of flashboard is complete;
B) be screwed into clamping screw from left flashboard, on clamping screw and right flashboard, the tapped blind hole of opening matches, along with tightening of clamping screw, left and right flashboard lower width is dwindled gradually, while pressed home spring, flashboard position, both sides is by parallel design, become wide at the top and narrow at the bottom, angulation between the flashboard of both sides;
C), assemble during less than the valve seat width when the lower width of left and right flashboard;
D) when assembling, put into gently between valve seat after the flashboard assembly bottom is aligned, after left and right flashboard bottom enters valve seat and puts in place, more suitably firmly advance downwards, until flashboard is secondary be in the design closed position with valve seat till;
E) complete assembling after, with the lengthening inner hexagon spanner clamping screw of back-outing, recover the relief hole function on the flashboard of left side from the valve body left channel, make the sealing surface of left and right flashboard be close to sealing surface of seat by Returnning spring simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100897544A CN103148231A (en) | 2013-03-20 | 2013-03-20 | High-temperature high-pressure parallel double-gate valve gate pair and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100897544A CN103148231A (en) | 2013-03-20 | 2013-03-20 | High-temperature high-pressure parallel double-gate valve gate pair and assembling method thereof |
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| CN103148231A true CN103148231A (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013100897544A Pending CN103148231A (en) | 2013-03-20 | 2013-03-20 | High-temperature high-pressure parallel double-gate valve gate pair and assembling method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410997A (en) * | 2013-08-26 | 2013-11-27 | 南通国电电站阀门有限公司 | High-pressure-relief type parallel-double-gate single side hard sealing gate valve |
| CN104776240A (en) * | 2015-04-03 | 2015-07-15 | 哈托利海托阀门（杭州）有限公司 | Bellows parallel gate valve |
| CN105003672A (en) * | 2014-04-24 | 2015-10-28 | 苏州科迪流体控制设备有限公司 | Novel parallel gate valve |
| CN105773071A (en) * | 2015-11-27 | 2016-07-20 | 南通市电站阀门有限公司 | Assembly method of valve seat of small-diameter gate valve |
| CN108361399A (en) * | 2018-04-23 | 2018-08-03 | 大连大高阀门股份有限公司 | Major accident release gate valve |
| CN111761547A (en) * | 2020-07-17 | 2020-10-13 | 福建福清核电有限公司 | Quick assembling tool and method for V-shaped gate valve flashboard |
| WO2022052370A1 (en) * | 2020-09-08 | 2022-03-17 | 苏州纽威阀门股份有限公司 | Wedge-type gate plate and seat ring mating process and mating device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201526691U (en) * | 2009-06-23 | 2010-07-14 | 汪玉奎 | Self-relief gate valve |
| CN201787113U (en) * | 2010-09-29 | 2011-04-06 | 华夏阀门有限公司 | Combined type damper plate of unidirectional sealed parallel type double damper plate gate valve |
| CN202746633U (en) * | 2012-08-29 | 2013-02-20 | 上海高中压阀门股份有限公司 | Double-isolation flat gate valve |
| CN202790608U (en) * | 2012-09-08 | 2013-03-13 | 环球阀门集团有限公司 | High-temperature high-pressure flat gate valve |
-
2013
- 2013-03-20 CN CN2013100897544A patent/CN103148231A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201526691U (en) * | 2009-06-23 | 2010-07-14 | 汪玉奎 | Self-relief gate valve |
| CN201787113U (en) * | 2010-09-29 | 2011-04-06 | 华夏阀门有限公司 | Combined type damper plate of unidirectional sealed parallel type double damper plate gate valve |
| CN202746633U (en) * | 2012-08-29 | 2013-02-20 | 上海高中压阀门股份有限公司 | Double-isolation flat gate valve |
| CN202790608U (en) * | 2012-09-08 | 2013-03-13 | 环球阀门集团有限公司 | High-temperature high-pressure flat gate valve |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410997A (en) * | 2013-08-26 | 2013-11-27 | 南通国电电站阀门有限公司 | High-pressure-relief type parallel-double-gate single side hard sealing gate valve |
| CN103410997B (en) * | 2013-08-26 | 2015-08-19 | 南通国电电站阀门有限公司 | High pressure relief formula double disc parallel seat single-face hard sealing gate valve |
| CN105003672A (en) * | 2014-04-24 | 2015-10-28 | 苏州科迪流体控制设备有限公司 | Novel parallel gate valve |
| CN105003672B (en) * | 2014-04-24 | 2017-11-07 | 苏州科迪流体控制设备有限公司 | A kind of Novel-parallel gate valve |
| CN104776240A (en) * | 2015-04-03 | 2015-07-15 | 哈托利海托阀门（杭州）有限公司 | Bellows parallel gate valve |
| CN105773071A (en) * | 2015-11-27 | 2016-07-20 | 南通市电站阀门有限公司 | Assembly method of valve seat of small-diameter gate valve |
| CN108361399A (en) * | 2018-04-23 | 2018-08-03 | 大连大高阀门股份有限公司 | Major accident release gate valve |
| CN111761547A (en) * | 2020-07-17 | 2020-10-13 | 福建福清核电有限公司 | Quick assembling tool and method for V-shaped gate valve flashboard |
| WO2022052370A1 (en) * | 2020-09-08 | 2022-03-17 | 苏州纽威阀门股份有限公司 | Wedge-type gate plate and seat ring mating process and mating device |
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Application publication date: 20130612 |