CN103994246B - Low temperature stopcock - Google Patents
Low temperature stopcock Download PDFInfo
- Publication number
- CN103994246B CN103994246B CN201410248622.6A CN201410248622A CN103994246B CN 103994246 B CN103994246 B CN 103994246B CN 201410248622 A CN201410248622 A CN 201410248622A CN 103994246 B CN103994246 B CN 103994246B
- Authority
- CN
- China
- Prior art keywords
- cock
- valve body
- stem
- hole
- stuffing box
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
- F16K5/0207—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor with special plug arrangement, e.g. special shape or built in means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/062—Construction of housing; Use of materials therefor of taps or cocks with conical plugs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
- F16K5/0242—Spindles and actuating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
- F16K5/0257—Packings
- F16K5/0271—Packings between housing and plug
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
- F16K5/0257—Packings
- F16K5/0285—Packings spindle sealing
Abstract
The invention provides a kind of low temperature stopcock, it comprises: valve body, and comprise cavity and the passage by medium, the sidewall of cavity is provided with circular groove, is inlaid with valve body lining in circular groove, and the material of valve body is LCB, LC3, CF8; Cock, is provided with medium through hole, and top is provided with cock stem, cock is coated with cock cover, and cock is rotatably located in the cavity of valve body, cock cover and valve body lining close contact; The material of cock is stainless steel built-up welding cobalt base hard alloy, and the material of cock stem is then 0Cr18Ni9; Stuffing box, is sheathed on cock stem hermetically, is positioned at the top of cock, valve gap, is covered in around stuffing box, and fixes with valve body, and material is identical with valve body; Handle set, is fixed on the upper end of cock stem; Fixed block, is fixed on valve gap; Location piece, the top of one end and cock stem is fixed, and the other end is used for being fixedly connected with fixed block.Structure of the present invention, material complement each other, and comprehensive mechanical performance improves.
Description
Technical field
The present invention relates to stopcock technical field, particularly a kind of low temperature stopcock.
Background technique
Subzero valve typically refers to operating temperature at-40 ° (degrees Celsius, lower with) valve below.Be generally used for ethene, liquefied natural gas plant, rock gas LPG and LNG storage tank and accept on base, satellite station, air separation plant, petrochemical industry tail gas separation equipment and liquid oxygen, liquid hydrogen, liquid nitrogen, liquid argon, carbon dioxide cryogenic tank and the device such as tank car, omnibus control system.
In recent years, Subzero valve demand rises year by year, and application is also more and more extensive, and Subzero valve has become an important branch in valve products.By Function Classification, Subzero valve comprises cryogenic ball valve, low-temperature brake valve, cryogenic globe valve, low-temperature safety valve, low temperature safety check, low temperature butterfly valve, low temperature needle-valve, cryogenic throttle valve, low-temperature reduced-pressure valve etc.By operating temperature classification, between-100 ° ~-40 °, be called Subzero valve, less than-100 ° be called Cryogenic valve (or deep cooling valve), the operating temperature of Subzero valve depends primarily on its medium temperature.-46 ° ,-100 ° and-196 ° of C tri-low-temperature grade are divided into according to the serviceability temperature of valve.
The material of Subzero valve and structure are all extremely important, and material is defective, can cause leaking outside or interior leakage of housing and sealing surface; The comprehensive mechanical performance of component, intensity and stiffness can not meet usage requirement and even rupture.Therefore, in the process of exploitation, design, development Subzero valve, valve mechanism, material are all the aspects that must give simultaneous altitude concern.
Summary of the invention
The object of the present invention is to provide a kind of low temperature stopcock, improve in structure, material simultaneously, to make the combination property of low temperature stopcock more outstanding.
To achieve these goals, technological scheme provided by the invention is as follows:
A kind of low temperature stopcock, it comprises: valve body, comprises the cavity that is positioned at center region and for the passage by medium, the sidewall of described cavity is provided with circular groove, is inlaid with valve body lining in described circular groove, and the material of described valve body is LCB, LC3, CF8; Cock, be provided with for the medium through hole by medium, top is provided with cock stem, described cock is coated with cock cover, and described cock is rotatably located in the cavity of described valve body, described cock cover and described valve body lining close contact; The material of described cock is stainless steel built-up welding cobalt base hard alloy, and the material of described cock stem is then 0Cr18Ni9; Stuffing box, is sheathed on described cock stem hermetically, is positioned at the top of described cock, and and seal between described cock; Valve gap, is covered in around described stuffing box, and fixes with described valve body, and for fixing described stuffing box, and the material of described valve gap is LCB, LC3, CF8; Handle set, is fixed on the upper end of described cock stem, and is connected with one handle; Fixed block, is fixed on described valve gap; Location piece, the top of one end and described cock stem is fixed, and the other end is used for being fixedly connected with described fixed block; Described location piece is racket shape, and one end is sheathed on described cock stem regularly, and the other end is provided with the first through hole; Described fixed block is provided with an outstanding head, and described outstanding head is provided with the second through hole, is connected between described second through hole and the first through hole by lock, with the position of fixing described cock stem.
Preferably, between the upper-end surface of described cock cover, valve body lining and described stuffing box by spirotallic gasket, diaphragm seal; By the sealing of O type circle between described stuffing box and described cock stem.
Preferably, the upper side of described cock stem is provided with the deep hole of level, is provided with anti-static spring, steel ball in described deep hole, and described steel ball is closely supported on described location piece by described anti-static spring, shakes to avoid described location piece.
Analyze known, the present invention improves from structure, material two aspects, provides a kind of new low temperature stopcock.Whereby, the present invention not only intensity and stiffness meets usage requirement, and structure, material complement each other, and comprehensive mechanical performance improves.
Accompanying drawing explanation
Fig. 1 be the embodiment of the present invention partly cut open structural representation;
Fig. 2, Fig. 3, Fig. 4 be respectively the overlooking of the valve body of the embodiment of the present invention, main depending on partly cuing open, side-looking partly cuts open structural representation;
The master that Fig. 5, Fig. 6, Fig. 7 are respectively the cock of the embodiment of the present invention depending on, overlook, longitudinal sectional structure schematic diagram;
Fig. 8 is the plan structure schematic diagram of the fixed block of the embodiment of the present invention;
Fig. 9 is the plan structure schematic diagram of the location piece of the embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
As shown in Figure 1, the embodiment of the present invention comprises valve body 1, cock 2, cock cover 3, valve body lining 4, spirotallic gasket 5, barrier film 6, spirotallic gasket 7, stuffing box 8, valve gap 9, O type circle 10, stud 11, nut 12, anti-static spring 14, steel ball 15, jump ring 16, fixed block 17, location piece 18, handle set 19, handle 20, lock 21.
Specifically ,-Fig. 4 as shown in Figure 1, Figure 2, valve body 1 comprises the cavity 100 that is positioned at center region and for the path 10 2 by medium, the sidewall of cavity 100 is provided with circular groove 101, is inlaid with valve body lining 4 in circular groove 101.And the material of valve body 1 is the LCB(LCB cast steel trade mark, a kind of low temperature carbon steel of American Standard), LC3(belongs to Al-Zn-Mg-Cu, 7 series extra super duralumin alloy), the standard designations 0f steel of CF8(U.S. ANSIASTM, be substantially equal to 304 stainless steel compositions of China).
As shown in Fig. 1, Fig. 5-Fig. 7, cock 2 is provided with for the medium through hole 200 by medium, and top is provided with cock stem 201, cock 2 is coated with cock cover 3, and cock 2 is rotatably located in the cavity 100 of valve body 1, cock cover 3 is with valve body lining 4 close contact and upper-end surface is concordant.When opening, medium through hole 200, path 10 2 are through.The material of cock 2 is stainless steel built-up welding cobalt base hard alloy, and the material of cock stem 201 is then 0Cr18Ni9.
Stuffing box 8 is sheathed on cock stem 201 hermetically, is positioned at the top of cock 2, cock cover 3, valve body lining 4, seals between its lower end surface and three end faces of three.
Valve gap 9 is covered in stuffing box 8 around, and and valve body 1 passes through stud 11, nut 12 is fixed, for fixing stuffing box 8.The material of valve gap 9 is then identical with the material of valve body 1.
Handle set 19 is fixed on the upper end 202 of cock stem 201, and is connected with one handle 20, and handle 20 rotates for driving cock stem 201.
As shown in Fig. 1, Fig. 8, Fig. 9, fixed block 17 is fixed on valve gap 9.The upper end 202 of location piece 18 one end and cock stem 201 is fixed, and the other end is fixedly connected with fixed block 17 by a lock 21.Preferably, location piece 18 is in racket shape, large end is provided with elongated hole 181, elongated hole 181 is set in the upper end 202 of cock stem 201, and cross section and the elongated hole 181 of upper end 202 coincide, and relatively rotate to avoid the two, and upper end 202 is provided with shallow slot 203, jump ring 16 snaps in shallow slot 203, thus is sheathed on regularly on cock stem 201 by location piece 18, prevents from coming off.The other end of location piece 18 is provided with the first through hole 182.Fixed block 17 two ends are provided with through hole 172, for being fixed on valve gap 9 by stud etc., middle part is provided with one outstanding 171, and outstanding 171 is provided with the second through hole 173, connected by lock 21, with the position of fixing cock stem 201 between second through hole 173 and the first through hole 182.
Preferably, the side, upper end 202 of cock stem 201 is provided with the deep hole 204 of level, is provided with anti-static spring 14, steel ball 15 in deep hole 204, and steel ball 15 is closely supported on location piece 17 by anti-static spring 14, shakes to avoid location piece 17.
In addition, in order to increase sealing effect, adopt multiple-sealed between cock 2 and miscellaneous part:
The spirotallic gasket 5 of first seals, be preferably Expanded graphite material, spirotallic gasket 5 is positioned at the junction of valve body 1, upper junction plate 221, valve gap 9, and it can reduce, and load is uneven, easily lax, temperature and pressure cycle change, have the harmful effect impacted or shake engaging force.
The PAT material barrier film 6 of second seals, and it is between upper junction plate 221, stuffing box 8.It has media-resistant, withstand voltage, resistance toly to subdue and sensitivity advantages of higher.
The spirotallic gasket 7 in the 3rd road seals, and it is between barrier film 6, cock stem 201, stuffing box 8, is preferably Expanded graphite material.
The O type circle sealing in the 4th road, between its top at stuffing box 8 and cock stem 201, realizes effective sealing.
In sum, the present invention proposes improvement from structure, component material two aspects, thus can the overall combination property improving low temperature stopcock.
As known by the technical knowledge, the present invention can be realized by other the embodiment not departing from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, all just illustrates, is not only.Within the scope of the present invention all or be all included in the invention being equal to the change in scope of the present invention.
Claims (3)
1. a low temperature stopcock, is characterized in that, comprising:
Valve body, comprises the cavity that is positioned at center region and for the passage by medium, the sidewall of described cavity is provided with circular groove, is inlaid with valve body lining in described circular groove, and the material of described valve body is LCB, LC3, CF8;
Cock, be provided with for the medium through hole by medium, top is provided with cock stem, described cock is coated with cock cover, and described cock is rotatably located in the cavity of described valve body, described cock cover and described valve body lining close contact; The material of described cock is stainless steel built-up welding cobalt base hard alloy, and the material of described cock stem is then OCr18Ni9;
Stuffing box, is sheathed on described cock stem hermetically, is positioned at the top of described cock, and and seal between described cock;
Valve gap, is covered in around described stuffing box, and fixes with described valve body, and for fixing described stuffing box, and the material of described valve gap is LCB, LC3, CF8;
Handle set, is fixed on the upper end of described cock stem, and is connected with one handle;
Fixed block, is fixed on described valve gap;
Location piece, the top of one end and described cock stem is fixed, and the other end is used for being fixedly connected with described fixed block; Described location piece is racket shape, and one end is sheathed on described cock stem regularly, and the other end is provided with the first through hole;
Described fixed block is provided with an outstanding head, and described outstanding head is provided with the second through hole, is connected between described second through hole and the first through hole by lock, with the position of fixing described cock stem.
2. low temperature stopcock according to claim 1, is characterized in that, by spirotallic gasket, diaphragm seal between the upper-end surface of described cock cover, valve body lining and described stuffing box; By the sealing of O type circle between described stuffing box and described cock stem.
3. low temperature stopcock according to claim 1, it is characterized in that, the upper side of described cock stem is provided with the deep hole of level, anti-static spring, steel ball is provided with in described deep hole, described steel ball is closely supported on described location piece by described anti-static spring, shakes to avoid described location piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410248622.6A CN103994246B (en) | 2014-06-06 | 2014-06-06 | Low temperature stopcock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410248622.6A CN103994246B (en) | 2014-06-06 | 2014-06-06 | Low temperature stopcock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103994246A CN103994246A (en) | 2014-08-20 |
| CN103994246B true CN103994246B (en) | 2016-01-27 |
Family
ID=51308501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410248622.6A Active CN103994246B (en) | 2014-06-06 | 2014-06-06 | Low temperature stopcock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103994246B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197051A (en) * | 2014-09-26 | 2014-12-10 | 上海沪东造船阀门有限公司 | Ultralow temperature flange-type stainless steel swing check valve for liquefied natural gas ship |
| CN106907502B (en) * | 2015-12-22 | 2020-09-08 | 浙江盾安人工环境股份有限公司 | Plug valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IN155180B (en) * | 1980-01-08 | 1985-01-12 | Xomox Corp | |
| DE202004019228U1 (en) * | 2003-12-12 | 2005-02-24 | Xomox International Gmbh & Co | Tap cock comprises a housing containing radial bearing elements by which a defined radial position of the plug in the housing is followed |
| CN102162532B (en) * | 2011-04-02 | 2015-03-25 | 江苏九龙阀门制造有限公司 | Low-temperature high pressure balancing plug valve |
| CN203348714U (en) * | 2013-07-02 | 2013-12-18 | 保一集团有限公司 | Multiple-sealing plug valve |
| CN203926875U (en) * | 2014-06-06 | 2014-11-05 | 施瑞德阀门(厦门)有限公司 | Low temperature stopcock |
-
2014
- 2014-06-06 CN CN201410248622.6A patent/CN103994246B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103994246A (en) | 2014-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103994246B (en) | Low temperature stopcock | |
| CN202032119U (en) | Pneumatic lining fluorine ball valve capable of being opened and closes rapidly | |
| CN203926875U (en) | Low temperature stopcock | |
| CN204678801U (en) | A kind of BOG liquefying plant | |
| CN105546144A (en) | Expanding shut upper-mounted type ultralow temperature hard sealing fixing ball valve | |
| CN204610939U (en) | Ultralow temperature fills formula fixing ball valve | |
| CN201731153U (en) | High-pressure low-temperature gas check valve | |
| CN103994274B (en) | Corrugated pipe cock | |
| CN201934678U (en) | Low-temperature shutoff valve | |
| CN203927044U (en) | Corrugated pipe cock | |
| CN103307302B (en) | Dress formula low temperature floating ball valve in one | |
| CN203686193U (en) | High-temperature-resistant rigidity seal rapidly-closed door | |
| CN212804250U (en) | Low-temperature valve with good sealing performance | |
| CN205026135U (en) | Low temperature upper assembling type fixes ball valve | |
| CN104141803A (en) | Ultralow-temperature stop valve suitable for liquified natural gas carrier | |
| CN203374839U (en) | Ultra-low temperature gate valve | |
| CN203948709U (en) | T-shaped threeway plug valve | |
| CN202520966U (en) | Low-temperature oxygen stop valve | |
| CN209115719U (en) | Ultralow temperature upper-mounting type ball valve | |
| CN102182835B (en) | Low-temperature stop valve | |
| CN205207734U (en) | Anti cold flows and lasts sealed plug valve | |
| CN204153464U (en) | A kind of LNG storage tank | |
| CN204004450U (en) | Non-leakage stopping valve | |
| CN210859846U (en) | LIP-SEAL valve seat structure bidirectional sealing double-eccentric ultra-low temperature butterfly valve capable of being maintained on line | |
| CN104033624B (en) | T-shaped threeway plug valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |