CN202790571U - Low temperature stop valve - Google Patents
Low temperature stop valve Download PDFInfo
- Publication number
- CN202790571U CN202790571U CN2012205035376U CN201220503537U CN202790571U CN 202790571 U CN202790571 U CN 202790571U CN 2012205035376 U CN2012205035376 U CN 2012205035376U CN 201220503537 U CN201220503537 U CN 201220503537U CN 202790571 U CN202790571 U CN 202790571U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- rod
- stem mut
- cover
- Prior art date
- 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 - Lifetime
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000000945 filler Substances 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
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- Lift Valve (AREA)
Abstract
The utility model discloses a low temperature stop valve capable of reducing manufacturing cost. The low temperature stop valve comprises a valve body, a valve cover, a valve element and a valve rod connected with the valve element. A stuffing box is arranged between the valve rod and the valve cover, the valve rod is connected with a valve-stem nut in a threaded mode. The valve-stem nut is fixed relative to the valve cover and located in a pressure-bearing area between the stuffing box and the valve element and is fixedly connected on the valve cover. A shaft shoulder is arranged on the valve rod, and a chamfer matched with the shaft shoulder is arranged on the valve-stem nut to form conical surface seal. When the valve element is fully opened, the valve-stem nut is matched with the valve cover and the valve rod to form a sealing structure, so that fillers can be conveniently replaced to maintain the valve. The design of the structure can shorten length of the valve rod and a bracket, and reduces manufacturing cost.
Description
Technical field
The utility model relates to a kind of stop valve, especially a kind of cryogenic globe valve.
Background technique
The valve mechanism of common stop valve comprises valve body, valve gap, spool and the valve rod that is connected with spool, be provided with stuffing box between valve rod and the valve gap, valve rod is threaded with Stem Mut, Stem Mut is fixed on the valve gap, the end of valve rod is provided with handwheel, rotates handwheel, and valve rod moves up and down in certain travel range along Stem Mut, thereby the regulating spool aperture realizes valve opening or closes.
The Stem Mut of common stop valve is installed in beyond the pressure-bearing zone, is mainly used in normal temperature condition.But, when being used for cryogenic conditions, according to standard-required, same size, valve in the uniform pressure situation, the length of the elongated portion that the ice chest of valve is used has specific requirement, remains in the nominal temperature range of the filling material that allows operation, at this moment because must guarantee the temperature of stem packing, if still adopt the valve mechanism of common stop valve, Stem Mut is installed in beyond the pressure-bearing zone, then must increases the length of valve rod and support, increase manufacture cost.
The model utility content
Longer in order to overcome existing stop valve valve rod and support, the deficiency that manufacture cost is higher, technical problem to be solved in the utility model provide a kind of cryogenic globe valve that can reduce manufacture cost.
The technological scheme that its technical problem that solves the utility model adopts is: cryogenic globe valve, comprise valve body, valve gap, spool and the valve rod that is connected with spool, be provided with stuffing box between valve rod and the valve gap, valve rod is threaded with Stem Mut, Stem Mut is fixed with respect to valve gap, in the pressure-bearing zone of described Stem Mut between stuffing box and spool and be fixedly connected on the valve gap.The stop valve of this structure is compared with the structure that adopts similar common stop valve, because Stem Mut directly is fixedly connected on the valve gap, therefore avoid the again fixed support of connection valve stem nut on valve gap, guaranteeing that the elongated portion length that ice chest is used meets under the prerequisite of standard-required, can shorten the length of valve rod and holder part, reduce valve rod and support materials amount, thereby reduced manufacture cost.
Further be, be provided with the shaft shoulder at described valve rod, be provided with the chamfering that cooperates with the described shaft shoulder on the Stem Mut, form conical surface seal, to reach preferably sealing effect.
Preferred described Stem Mut is copper nut, utilizes the good ductility of copper to reach preferably sealing effect.
Further be that described Stem Mut is threaded with valve gap and is fixedly connected with valve gap by Cock screw, is convenient to dismounting.
The beneficial effects of the utility model are: can shorten valve rod and holder part length, reduce manufacture cost; Stem Mut can have two kinds of effects concurrently simultaneously: the one, and basic gearing to valve rod transmission axial force, is ordered about valve rod and is moved up and down, thereby realizes the valve opening closing function; The 2nd, seal action is processed with sealing surface at Stem Mut, need to change at valve in the situation of filler, can poppet stem, realize sealing function.
Description of drawings
Fig. 1 is the structural drawing of common stop valve.
Fig. 2 is the structural drawing of common cryogenic globe valve.
Fig. 3 is the structural drawing of the utility model cryogenic globe valve.
Fig. 4 is the enlarged diagram of conical surface seal position m section among Fig. 3.
Be labeled as 1-valve body, 2-spool, 3-stuffing box among the figure, the 4-valve gap, 5-valve rod, 6-Stem Mut, 7-Cock screw, the 8-handwheel, 9-filler pressing sleeve, 10-Gland, 10 '-Gland, the 11-upper seal support, 12-flap pressure cap, 13-stem bearing, 14-pad, the 15-bearing, 16-pressure cap, 17-spring, the 51-shaft shoulder, 61-chamfering, the elongated portion length that the L-ice chest is used.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
As shown in Figure 1, common stop valve, on the support that Stem Mut is installed in valve gap is connected, if use this kind structural design cryogenic globe valve, as shown in Figure 2, owing to must guarantee the elongated portion length L that ice chest is used, valve rod is very long, and the structure that fixes Stem Mut by support more just seems economical not.
Such as Fig. 3, shown in Figure 4, cryogenic globe valve of the present utility model comprises valve body 1, valve gap 4, spool 2 and the valve rod 5 that is connected with spool 2, valve body 1 is connected with valve gap 4 flanges, be provided with stuffing box 3 between valve rod 5 and the valve gap 4, the filler that is filled with in the stuffing box 3 is fixed by filler pressing sleeve 9 and Gland 10 ', the Stem Mut 6 that valve rod 5 adopts is copper nut, in the pressure-bearing zone of described Stem Mut 6 between stuffing box 3 and spool 2: Stem Mut 6 is processed with outside thread and is had in the through hole of the internal thread that is complementary by the flange facing screw-in valve gap 4 of valve gap 4 with valve body 1, and be fixedly connected with valve gap 4 by Cock screw 7, Stem Mut 6 contacts with the interior edge face of valve gap 4 away from the end face of spool 2, be provided with the shaft shoulder 51 on the valve rod 5, be provided with the chamfering 61 that cooperates with the described shaft shoulder 51 on the Stem Mut 6, form conical surface seal.
Its assembling scheme is, at first Stem Mut 6 is installed on the valve gap 4, and is threaded to Stem Mut 6 and contacts with the interior edge face of valve gap 4, then joins and makes screw and with Cock screw 7 standing valve stem nuts 6, prevent that it from getting loose, and then processes the chamfering 61 of Stem Mut 6.
Claims (4)
1. cryogenic globe valve, comprise valve body (1), valve gap (4), spool (2) and the valve rod (5) that is connected with spool (2), be provided with stuffing box (3) between valve rod (5) and the valve gap (4), valve rod (5) is threaded with Stem Mut (6), Stem Mut (6) is fixed with respect to valve gap (4), it is characterized in that: described Stem Mut (6) is positioned at the pressure-bearing zone between stuffing box (3) and the spool (2) and is fixedly connected on the valve gap (4).
2. cryogenic globe valve as claimed in claim 1 is characterized in that: be provided with the shaft shoulder (51) on the described valve rod (5), be provided with the chamfering (61) that cooperates with the described shaft shoulder (51) on the Stem Mut (6).
3. cryogenic globe valve as claimed in claim 1 or 2, it is characterized in that: described Stem Mut (6) is copper nut.
4. cryogenic globe valve as claimed in claim 1 or 2, it is characterized in that: described Stem Mut (6) is threaded with valve gap (4) and is fixedly connected with valve gap (4) by Cock screw (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205035376U CN202790571U (en) | 2012-09-27 | 2012-09-27 | Low temperature stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205035376U CN202790571U (en) | 2012-09-27 | 2012-09-27 | Low temperature stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202790571U true CN202790571U (en) | 2013-03-13 |
Family
ID=47817836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205035376U Expired - Lifetime CN202790571U (en) | 2012-09-27 | 2012-09-27 | Low temperature stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202790571U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853089A (en) * | 2012-09-27 | 2013-01-02 | 四川优机实业股份有限公司 | Low-temperature stop valve |
| CN103775656A (en) * | 2014-01-21 | 2014-05-07 | 张家港富瑞特种装备股份有限公司 | Low-temperature high-pressure stop valve |
| CN104141803A (en) * | 2013-05-08 | 2014-11-12 | 上海沪东造船阀门有限公司 | Ultralow-temperature stop valve suitable for liquified natural gas carrier |
| CN105090542A (en) * | 2015-09-16 | 2015-11-25 | 上海沪东造船阀门有限公司 | Ultralow-temperature stainless steel welding type stop valve for liquefied natural gas ship |
| CN113464660A (en) * | 2021-08-04 | 2021-10-01 | 凯瑞特阀业有限公司 | Ultra-low temperature bellows gate valve |
-
2012
- 2012-09-27 CN CN2012205035376U patent/CN202790571U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853089A (en) * | 2012-09-27 | 2013-01-02 | 四川优机实业股份有限公司 | Low-temperature stop valve |
| CN104141803A (en) * | 2013-05-08 | 2014-11-12 | 上海沪东造船阀门有限公司 | Ultralow-temperature stop valve suitable for liquified natural gas carrier |
| CN103775656A (en) * | 2014-01-21 | 2014-05-07 | 张家港富瑞特种装备股份有限公司 | Low-temperature high-pressure stop valve |
| CN105090542A (en) * | 2015-09-16 | 2015-11-25 | 上海沪东造船阀门有限公司 | Ultralow-temperature stainless steel welding type stop valve for liquefied natural gas ship |
| CN113464660A (en) * | 2021-08-04 | 2021-10-01 | 凯瑞特阀业有限公司 | Ultra-low temperature bellows gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Low temperature stop valve Effective date of registration: 20200826 Granted publication date: 20130313 Pledgee: China Minsheng Banking Corp Chengdu branch Pledgor: Y & J INDUSTRIES Co.,Ltd. Registration number: Y2020980005390 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
|
| CX01 | Expiry of patent term | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20240104 Granted publication date: 20130313 Pledgee: China Minsheng Banking Corp Chengdu branch Pledgor: Y & J INDUSTRIES Co.,Ltd. Registration number: Y2020980005390 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |