CN204420155U - New type high temperature Wedge gate valve - Google Patents
New type high temperature Wedge gate valve Download PDFInfo
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- CN204420155U CN204420155U CN201520005820.XU CN201520005820U CN204420155U CN 204420155 U CN204420155 U CN 204420155U CN 201520005820 U CN201520005820 U CN 201520005820U CN 204420155 U CN204420155 U CN 204420155U
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- valve
- stem mut
- wedge shape
- disc spring
- spring group
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Abstract
The utility model discloses a kind of new type high temperature Wedge gate valve, comprise valve body, wedge shape valve seat, wedge shape flashboard, valve rod, Stem Mut and valve gap, valve gap is fixedly connected with the upper end of valve body, wedge shape valve seat is installed in valve body, wedge shape flashboard and wedge shape valve seat are sealed and matched, outer end and the Stem Mut of valve rod are threaded connection, the inner of valve rod is through valve gap, and stretch in valve body, and the inner of valve rod is connected with wedge shape flashboard, support is set with outside Stem Mut, bearing pack is provided with between this Stem Mut and support, disc spring group and lower disc spring group is also provided with between Stem Mut and support, the top of upper disc spring group is provided with gland nut, this gland nut is pressed in disc spring group.The utility model structure is ripe, and sealing is reliable, makes valve long-time running more safe and reliable, reduces equipment cost and operating cost.This new type high temperature Wedge gate valve makes valve opening close flexibility and reliability, can be applicable to higher operating temperature safely and reliably.
Description
Technical field
The utility model relates to a kind of gate valve, particularly a kind of new type high temperature Wedge gate valve.
Background technique
In distillation system and thermal power station's system, Wedge gate valve is widely applied in each pipe-line system, playing an important role in the entire system, for guaranteeing the operation of the long-term safety of whole system, should adopt the valve that safe and reliable coefficient is high.Practical experience for many years shows, traditional Wedge gate valve is under worst hot case, after work a period of time, there will be sealing surface wear serious, cause the situation that valve fits badly, flashboard and valve seat wedging (wedge is dead) when even also there will be valve closing, the situation of valve rod back seal and valve gap back seal wedging (wedge is dead) during valve opening, these two kinds of wedging (wedge is dead) situations are once occur, light then the wearing and tearing of sealing surface can be aggravated, heavy then cause valve not open rapidly or close, influential system security of operation at once.
In order to solve the problem of wedging (wedge is dead) under closed condition, solution is in the past the type selecting increasing Electric actuator, larger thrust is provided to open valve by force with the Electric actuator of larger number, in this case, the wearing and tearing of sealing surface and threaded stem will inevitably be aggravated, can only be solved by maintenance or renewal part after sealing surface and threaded stem wearing and tearing.In order to solve problem opening state lower valve sealing wedging (wedge is dead), solution is in the past, user returns 1 ~ 2 circle after position is reached in sealing on valve again, so the upper sealing of valve is just performed practically no function, the filler part that can cause valve stem seal directly and high-temperature high-pressure medium Long Term Contact, adds the possibility of stuffing box place seepage and filler erosion, shortens the working life of filler, increase maintenance of valve amount, shorten service cycle.Therefore these two kinds of solutions all do not solve essential problem well, and the cost namely adding Electric actuator turn increases device maintenance expense and engineering time, thus improves the operating cost of whole system.Go down for a long time, this is not only bad for the lifting of systematic economy benefit, is also unfavorable for that system long-term safety is stably run.
Model utility content
For solving the problems of the technologies described above, the purpose of this utility model is to provide a kind of safety coefficient high and flexibility and the good new type high temperature Wedge gate valve of applicability.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the utility model is achieved through the following technical solutions: a kind of new type high temperature Wedge gate valve, comprise valve body, wedge shape valve seat, wedge shape flashboard, valve rod, Stem Mut and valve gap, described valve gap is fixedly connected with the upper end of described valve body, described wedge shape valve seat is installed in valve body, described wedge shape flashboard and described wedge shape valve seat are sealed and matched, outer end and the Stem Mut of described valve rod are threaded connection, the inner of valve rod is through described valve gap, and stretch in described valve body, and the inner of valve rod is connected with described wedge shape flashboard, support is set with outside described Stem Mut, bearing pack is provided with between this Stem Mut and support, the upper disc spring group be positioned at above bearing pack and the lower disc spring group be positioned at below bearing pack is also provided with between Stem Mut and support, the top of described upper disc spring group is provided with the gland nut be sleeved on described Stem Mut, this gland nut is pressed in described upper disc spring group.
Further, described valve rod is provided with seal boss structure, and described valve gap is provided with the upper sealing concave structure matched with the upper seal boss structure of valve rod.
Further, packing ring is respectively equipped with between described bearing pack and described upper disc spring group and between described bearing pack and described lower disc spring group.
Further, the outer peripheral surface of described Stem Mut has convex shoulder, described bearing pack comprise be positioned at Stem Mut convex shoulder above a bearing and be positioned at Stem Mut convex shoulder below a bearing.
The beneficial effects of the utility model are: the upper and lower of the utility model between Stem Mut and support arranges disc spring group respectively, when valve is opened from closed condition, lower disc spring group can provide because valve rod shrink and produce deformation-compensated, when valve is closed from opening state, upper disc spring group can provide produce because of the elongation of valve stem deformation-compensated, thus effectively solve the problem that wedging easily occurs valve under opening and closing state, make valve switch flexible, improve the safety coefficient of valve.Upper disc spring group during this use is novel is arranged at above bearing pack, and is compressed by gland nut, and lower disc spring group is arranged at the below of bearing pack, thus upper disc spring group and lower disc spring group can more effectively act on valve rod, make valve switch more flexible.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the enlarged diagram of part A in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection domain of the present utility model.
As depicted in figs. 1 and 2, a kind of new type high temperature Wedge gate valve, comprise valve body 1, wedge shape valve seat 2, wedge shape flashboard 3, valve rod 4, Stem Mut 5 and valve gap 6, described valve gap 6 is fixedly connected with the upper end of described valve body 1, described wedge shape valve seat 2 is installed in valve body 1, described wedge shape flashboard 3 is sealed and matched with described wedge shape valve seat 2, outer end and the Stem Mut 5 of described valve rod 4 are threaded connection, the inner of valve rod 4 is through described valve gap 6, and stretch in described valve body 1, and the inner of valve rod 4 is connected with described wedge shape flashboard 3, support 7 is set with outside described Stem Mut 5, bearing pack is provided with between this Stem Mut 5 and support 7, the upper disc spring group 8 be positioned at above bearing pack and the lower disc spring group 9 be positioned at below bearing pack is also provided with between Stem Mut 5 and support 7, the top of described upper disc spring group 8 is provided with the gland nut 10 be sleeved on described Stem Mut 5, this gland nut 10 is pressed in described upper disc spring group 8.In the utility model, the bottom of support 7 can realize supporting to lower disc spring group 9.
Described valve rod 4 is provided with seal boss structure 401, and described valve gap 6 is provided with upper sealing concave 601 structure matched with the upper seal boss structure 401 of valve rod 4.The upper seal boss structure 401 of this valve rod 4 and the upper sealing concave structure 601 of valve gap 6 define the upper sealing pair between valve rod 4 and valve gap 6.In the utility model, between valve rod 4 and valve gap 6, also form upper sealing pair by other structural types.
Furtherly, between described bearing pack and described upper disc spring group 8 and between described bearing pack and described lower disc spring group 9, be respectively equipped with packing ring 13, bearing pack can be made stressed evenly.
Furtherly, the outer peripheral surface of described Stem Mut 5 has convex shoulder 501, described bearing pack comprise be positioned at Stem Mut 5 convex shoulder 501 above a bearing 11 and be positioned at Stem Mut 5 convex shoulder 501 below a bearing 12.
When carrying out valve opening action, Electric actuator drives Stem Mut 5 to rotate counterclockwise, by threaded function, counter-clockwise rotary motion is converted to the ascending motion of valve rod 4 between Stem Mut 5 and valve rod 4, valve rod 4 drives wedge shape flashboard 3 to rise, after the upper seal boss structure 401 of valve rod 4 to contact with the upper sealing concave structure 601 of valve gap 6 and compresses, Electric actuator jointly controls stop band ovable valve stem nut 5 by position limit switch and torque switch and rotates, and valve rod 4 stops rising, and valve is opened completely.Valve rod 4 is thus lifted to valve outside from valve internal, because interior media temperature is very high, valve rod 4 can cool gradually after being suggested valve lumen, valve rod 4 is because of cooling meat gradually and length can slightly shorten, now, lower disc spring group 9 can compensate by compressive strain the displacement produced because valve rod shrinks, thus makes the upper sealing pair formed between valve rod 4 and valve gap 6 can not produce larger pressure stress, in solution easily there is the situation of wedging in sealing pair, effectively prevent the generation of closing valve difficulty situation.
When carrying out valve closing action, Electric actuator drives Stem Mut 5 to rotate clockwise, by threaded function, clockwise rotation is converted to the descending motion of valve rod 4 between Stem Mut 5 and valve rod 4, valve rod 4 drives wedge shape flashboard 3 to decline, after the sealing surface of wedge shape flashboard 3 to contact with the sealing surface of wedge shape valve seat 2 and compresses, Electric actuator jointly controls stop band ovable valve stem nut 5 by position limit switch and torque switch and rotates, and valve rod 4 stops driving wedge brake plate 3 to decline, and valve is closed completely.Valve rod 4 is from valve external movement to valve internal, because interior media temperature is very high, valve rod 4 expands because heating up gradually and slightly extends, rigidity due to wedge shape flashboard 3 will be much higher than the rigidity of upper disc spring group 8, the upper disc spring group 8 that compacted nut 10 is pushed down can compensate most displacement produced because valve rod 4 extends by compressive strain, thus make wedge shape flashboard 3 can not produce the larger secondary amount of moving down, easily there is the problem of wedging in the sealing pair solved between wedge shape flashboard 3 and wedge shape valve seat 2, alleviate the wearing and tearing of the sealing pair between wedge shape flashboard 3 and wedge shape valve seat 2, effectively prevent the generation of valve opening difficulty situation.
The maximum load that upper disc spring group 8 in the utility model and the amount of deformation of lower disc spring group 9 can provide when neutral position equals maximum thrust needed for valve closing, also retain the compressible deformation space of 1 ~ 1.5mm simultaneously, can ensure like this, the thrust needed for valve seal can be ensured when disc spring group enters working state (amount of deformation of half), the compensate for clearance needed for valve rod distortion also can be provided simultaneously.
The utility model structure is ripe, and sealing is reliable, and new structural design makes valve long-time running more safe and reliable, reduces equipment cost and operating cost.Compared with the gate valve of routine, this new type high temperature Wedge gate valve open and close flexibility and reliability, can be applicable to higher operating temperature safely and reliably.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (4)
1. a new type high temperature Wedge gate valve, it is characterized in that: comprise valve body, wedge shape valve seat, wedge shape flashboard, valve rod, Stem Mut and valve gap, described valve gap is fixedly connected with the upper end of described valve body, described wedge shape valve seat is installed in valve body, described wedge shape flashboard and described wedge shape valve seat are sealed and matched, outer end and the Stem Mut of described valve rod are threaded connection, the inner of valve rod is through described valve gap, and stretch in described valve body, and the inner of valve rod is connected with described wedge shape flashboard, support is set with outside described Stem Mut, bearing pack is provided with between this Stem Mut and support, the upper disc spring group be positioned at above bearing pack and the lower disc spring group be positioned at below bearing pack is also provided with between Stem Mut and support, the top of described upper disc spring group is provided with the gland nut be sleeved on described Stem Mut, this gland nut is pressed in described upper disc spring group.
2. new type high temperature Wedge gate valve according to claim 1, is characterized in that: described valve rod is provided with seal boss structure, and described valve gap is provided with the upper sealing concave structure matched with the upper seal boss structure of valve rod.
3. new type high temperature Wedge gate valve according to claim 1, is characterized in that: be respectively equipped with packing ring between described bearing pack and described upper disc spring group and between described bearing pack and described lower disc spring group.
4. new type high temperature Wedge gate valve according to claim 1, it is characterized in that: the outer peripheral surface of described Stem Mut has convex shoulder, described bearing pack comprise be positioned at Stem Mut convex shoulder above a bearing and be positioned at Stem Mut convex shoulder below a bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520005820.XU CN204420155U (en) | 2015-01-06 | 2015-01-06 | New type high temperature Wedge gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520005820.XU CN204420155U (en) | 2015-01-06 | 2015-01-06 | New type high temperature Wedge gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204420155U true CN204420155U (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520005820.XU Active CN204420155U (en) | 2015-01-06 | 2015-01-06 | New type high temperature Wedge gate valve |
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| CN (1) | CN204420155U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697867A (en) * | 2016-02-29 | 2016-06-22 | 苏州纽威阀门股份有限公司 | Valve rod travel dynamic compensation assembly and stop valve |
| CN110486501A (en) * | 2019-09-03 | 2019-11-22 | 大连大高阀门股份有限公司 | Three-way cut-off valve |
| RU207943U1 (en) * | 2021-07-29 | 2021-11-25 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Петрозаводский государственный университет" | WEDGE GATE VALVE WITH WAVE REDUCER |
-
2015
- 2015-01-06 CN CN201520005820.XU patent/CN204420155U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697867A (en) * | 2016-02-29 | 2016-06-22 | 苏州纽威阀门股份有限公司 | Valve rod travel dynamic compensation assembly and stop valve |
| CN110486501A (en) * | 2019-09-03 | 2019-11-22 | 大连大高阀门股份有限公司 | Three-way cut-off valve |
| RU207943U1 (en) * | 2021-07-29 | 2021-11-25 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Петрозаводский государственный университет" | WEDGE GATE VALVE WITH WAVE REDUCER |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |