CN113983214A - Manual switch ultra-low temperature stop check valve - Google Patents
Manual switch ultra-low temperature stop check valve Download PDFInfo
- Publication number
- CN113983214A CN113983214A CN202111222564.6A CN202111222564A CN113983214A CN 113983214 A CN113983214 A CN 113983214A CN 202111222564 A CN202111222564 A CN 202111222564A CN 113983214 A CN113983214 A CN 113983214A
- Authority
- CN
- China
- Prior art keywords
- valve
- check valve
- low temperature
- packing
- valve body
- 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.)
- Pending
Links
- 238000012856 packing Methods 0.000 claims abstract description 31
- 210000004907 gland Anatomy 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 7
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000003949 liquefied natural gas Substances 0.000 abstract description 13
- 238000013461 design Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
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- 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
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
-
- 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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
-
- 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
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/005—Particular materials for seats or closure elements
-
- 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
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
-
- 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
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
-
- 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The application discloses manual switch ultra-low temperature cut-off check valve includes: the valve body is provided with an inlet, an outlet and a valve seat, the valve seat is positioned between the inlet and the outlet, and a through hole is formed in the valve seat; the valve cover is arranged on the valve body; a valve disc located within the valve body; the valve disc and the valve seat form a sealing surface when connected, and the sealing surface divides the valve body into two independent cavities; the valve rod is used as a transmission part of the stop check valve, and the first end of the valve rod penetrates through the valve cover, extends into the valve body and is fixedly connected with the valve disc; the hand wheel is fixedly connected to the second end of the valve rod; and the packing pressing plate, the packing gland, the packing pad, the valve cover and the thread sleeve are positioned between the hand wheel and the valve disc. The application discloses manual ultra-low temperature check valve of high performance can be applied to various complicated piping, can be fine use under the operating mode of liquefied natural gas ship-163 ℃ ultralow temperature, has extremely extensive usage.
Description
Technical Field
The application relates to the technical field of valves, in particular to a manual switch ultralow temperature stop check valve.
Background
With the development of shipbuilding industry, more and more valves are widely applied to ship piping and play a very important role in the whole ship system. The Liquefied Natural Gas (LNG) ship is a special ship designed and built for transporting liquefied natural gas at an extremely low temperature of-163 ℃, and among all the current freight ships, the LNG ship is the most technically complex and difficult, and is called as the pearl on the crown of the world shipbuilding. The manual ultralow-temperature stainless steel stop check valve for the LNG ship can normally work in a working environment of 196 ℃ below zero, and has high practical value and development prospect.
LNG boats and ships pipe-line system is very complicated and important, and traditional valve can't work under the ultra-low temperature state, can warp even because the material reason appears, cracked condition, and ordinary low temperature valve also can appear metal deformation, sealed face deformation under the environment of ultra-low temperature, sealed condition of effecting effectively. The manual ultralow-temperature stainless steel stop check valve for the LNG ship can work in an environment of 196 ℃ below zero, is widely applicable to various complicated LNG ship pipelines, is made of austenitic stainless steel materials, has high low-temperature toughness, overcomes the defect of cold brittleness of the materials in an ultralow-temperature environment, can effectively reduce impact of various stresses in the low-temperature environment due to structural design, and has excellent product performance.
Content of application
The application aims to provide a manually controlled ultralow-temperature stop check valve, which overcomes the extremely low temperature use working condition of a Liquefied Natural Gas (LNG) ship at-163 ℃.
In order to achieve the purpose, the application is realized by the following technical scheme:
a manually opened and closed ultra-low temperature cutoff check valve comprising:
the valve body is provided with an inlet, an outlet and a valve seat, the valve seat is positioned between the inlet and the outlet, and a through hole is formed in the valve seat;
the valve cover is arranged on the valve body;
a valve disc located within the valve body; the valve disc and the valve seat form a sealing surface when connected, and the sealing surface divides the valve body into two independent cavities;
the valve rod is used as a transmission part of the stop check valve, and the first end of the valve rod penetrates through the valve cover, extends into the valve body and is fixedly connected with the valve disc;
the hand wheel is fixedly connected to the second end of the valve rod;
and the packing pressing plate, the packing gland, the packing pad, the valve cover and the thread sleeve are sequentially arranged between the hand wheel and the valve disc from top to bottom.
In this embodiment, the valve disc is sleeved at the first end of the valve rod.
In this embodiment, the second end of valve rod is equipped with the square tenon, be equipped with the screw thread on the square tenon, the square tenon pass through the lid type nut with hand wheel connection.
In this embodiment, the filler is a metal graphite woven material.
In this embodiment, the lower flange of the valve cover is fastened to the middle flange of the valve body by bolts.
In this embodiment, a metal corrugated tooth composite gasket is placed between the lower flange of the valve cover and the middle flange of the valve body.
In this embodiment, the outer wall of the packing gland is provided with two O-ring grooves, the inner wall of the packing gland is provided with one O-ring groove, one O-ring groove is arranged between the packing gland and the valve cover, two O-ring grooves are arranged between the packing gland and the valve rod, and one O-ring is respectively placed in each O-ring groove, so that the sealing performance of the packing position is fully ensured.
In this embodiment, the packing pressing plate is locked by bolts and nuts and disc springs.
In this embodiment, the valve cover is connected to the valve body by a fastener.
In the present embodiment, each structure of the check valve is made of an austenitic stainless steel material.
Compared with the prior art, the method has the following advantages:
the application discloses manual ultra-low temperature check valve of high performance can be applied to various complicated piping, can be fine use under the operating mode of liquefied natural gas ship-163 ℃ ultralow temperature, has extremely extensive usage.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a manual opening and closing ultralow temperature cut-off check valve in the embodiment of the present application.
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described with reference to the accompanying drawings, the described embodiments should not be considered as limiting the present application, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
In the following description, reference is made to "some embodiments," "one or more embodiments," which describe a subset of all possible embodiments, but it is understood that "some embodiments," "one or more embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.
In the following description, references to the terms "first \ second \ third" are used for respective similar objects only and do not denote a particular order or importance to the objects, it being understood that "first \ second \ third" may be interchanged under certain circumstances or sequences of events to enable embodiments of the application described herein to be practiced in other than those illustrated or described.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the application.
Referring to fig. 1, the present embodiment provides a manual switching ultra-low temperature stop check valve, which includes:
the valve body 1 with the cavity structure is provided with an inlet, an outlet and a valve seat, wherein the valve seat is positioned between the inlet and the outlet, and a through hole is formed in the valve seat;
the valve cover 4 is arranged on the valve body 1; the valve cover 4 is strictly designed according to the standard requirements of the valve, so that the temperature of the flange on the valve cover 4 caused by the heat conduction effect is controlled to be above 0 ℃ in the use process, and the use safety and the sealing performance of the filler 7 are ensured;
a valve disc 2 positioned in the valve body 1; when the stop check valve is opened, the two cavities of the valve body 1 are communicated with each other, and are communicated in the forward direction and stopped in the reverse direction; the valve disc 2 adopts a plane valve head design, so that the service life of the valve can be ensured;
the valve rod 5 is used as a transmission part of the stop check valve, and the first end of the valve rod penetrates through the valve cover 4, extends into the valve body 1 and is fixedly connected with the valve disc 2; a certain gap is reserved between the valve rod 5 and the valve disc 2 without connection, the roughness is ensured, the abrasion is reduced, the service life is prolonged, and the realization of two functions of non-return and stopping is ensured;
a hand wheel 12 fixedly connected to a second end of the valve rod 5;
and the packing pressing plate 9, the packing gland 8, the packing 7, the packing pad 6, the valve cover 4 and the threaded sleeve 14 are sequentially arranged between the hand wheel 12 and the valve disc 2 from top to bottom.
In this embodiment, the valve disc 2 is sleeved on the first end of the valve rod 5.
In this embodiment, the second end of the valve rod 5 is provided with a square tenon, the square tenon is provided with threads, and the square tenon is connected with the hand wheel 12 through a cap nut.
In this embodiment, the filler 7 is a metal graphite woven material.
In this embodiment, the lower flange of the bonnet 4 is fastened to the middle flange of the valve body 1 by bolts.
In this embodiment, a metal corrugated tooth composite gasket is placed between the lower flange of the valve cover 4 and the middle flange of the valve body 1.
In this embodiment, the outer wall of the packing gland 8 is provided with two O-ring grooves, the inner wall of the packing gland 8 is provided with one O-ring groove, an O-ring groove is arranged between the packing gland 8 and the valve cover 4, two O-ring grooves are arranged between the packing gland 8 and the valve rod 5, and an O-ring is respectively placed in each O-ring groove, so that the sealing performance of the packing 7 is fully ensured.
In this embodiment, the packing retainer plate 9 is fastened by bolts and nuts and a disc spring 20.
In this embodiment, the valve cover 4 is connected to the valve body 1 by a fastening member.
In the present embodiment, each structure of the check valve is made of an austenitic stainless steel material. The stop check valve can work in an environment of 196 ℃ below zero, is widely applicable to various complicated LNG ship piping systems, is made of austenitic stainless steel materials, has high low-temperature toughness, overcomes the defect of cold brittleness of the materials in an ultralow-temperature environment, can effectively reduce impact of various stresses in the low-temperature environment due to structural design, and has excellent product performance.
The above description is only an example of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, and improvement made within the spirit and scope of the present application are included in the protection scope of the present application.
Claims (10)
1. A manual switch ultra-low temperature cut-off check valve is characterized by comprising:
the valve body is provided with an inlet, an outlet and a valve seat, the valve seat is positioned between the inlet and the outlet, and a through hole is formed in the valve seat;
the valve cover is arranged on the valve body;
a valve disc located within the valve body; the valve disc and the valve seat form a sealing surface when connected, and the sealing surface divides the valve body into two independent cavities;
the valve rod is used as a transmission part of the stop check valve, and the first end of the valve rod penetrates through the valve cover, extends into the valve body and is fixedly connected with the valve disc;
the hand wheel is fixedly connected to the second end of the valve rod;
and the packing pressing plate, the packing gland, the packing pad, the valve cover and the thread sleeve are sequentially arranged between the hand wheel and the valve disc from top to bottom.
2. The manually switched ultra-low temperature cutoff check valve of claim 1, wherein said valve disc is sleeved over a first end of said valve stem.
3. The manually-operated ultralow temperature cut-off check valve as recited in claim 1, wherein the second end of the valve rod is provided with a square tenon, the square tenon is provided with a thread, and the square tenon is connected with the hand wheel through a cap-shaped nut.
4. The manually opened/closed ultra-low temperature cutoff check valve as recited in claim 1, wherein said filler is a metal graphite woven material.
5. The manually opened/closed ultra-low temperature cutoff check valve as set forth in claim 1, wherein a lower flange of said valve cover is fastened to a middle flange of said valve body by means of bolts.
6. The manually opened/closed ultra-low temperature cutoff check valve as recited in claim 5, wherein a metal corrugated composite gasket is disposed between said lower flange of said valve cover and said middle flange of said valve body.
7. The manually-operated ultralow temperature cut-off check valve as recited in claim 1, wherein two O-ring grooves are formed in the outer wall of the packing gland, one O-ring groove is formed in the inner wall of the packing gland, one O-ring groove is formed between the packing gland and the valve cover, two O-ring grooves are formed between the packing gland and the valve rod, and one O-ring is respectively placed in each O-ring groove to fully ensure the sealing performance of the packing.
8. The manually opened/closed ultra-low temperature cutoff check valve as recited in claim 1, wherein said packing retainer plate is locked by a bolt and nut and a disc spring.
9. The manually operated ultralow temperature cutoff check valve of claim 1 wherein said valve cover is connected to said valve body by a fastener.
10. The manually operated ultralow temperature cutoff check valve of claim 1 wherein each of the structures of said cutoff check valve is an austenitic stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111222564.6A CN113983214A (en) | 2021-10-20 | 2021-10-20 | Manual switch ultra-low temperature stop check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111222564.6A CN113983214A (en) | 2021-10-20 | 2021-10-20 | Manual switch ultra-low temperature stop check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113983214A true CN113983214A (en) | 2022-01-28 |
Family
ID=79739682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111222564.6A Pending CN113983214A (en) | 2021-10-20 | 2021-10-20 | Manual switch ultra-low temperature stop check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113983214A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7251481A (en) * | 1980-07-03 | 1982-01-07 | Bestobell (U.K.) Ltd. | Cryogenic valve gland |
| WO1998016766A1 (en) * | 1996-10-15 | 1998-04-23 | Process Systems International, Inc. | Cryogenic fluid process containment valve, method and system |
| CN2401739Y (en) * | 1999-10-29 | 2000-10-18 | 宁波埃美柯铜阀门有限公司 | Stop valve |
| CN203730912U (en) * | 2014-01-22 | 2014-07-23 | 大连大高阀门股份有限公司 | Sealing structure capable of guaranteeing zero leakage at valve rod under LNG ultra-low temperature working condition |
| 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 |
| CN204153161U (en) * | 2014-10-16 | 2015-02-11 | 开封瑞科阀门有限公司 | The seal arrangement of dark bar ultralow temperature stop valve |
| CN205479583U (en) * | 2015-12-24 | 2016-08-17 | 安科特种阀门有限公司 | In -band leaks super low temperature check valve of function |
| CN205859177U (en) * | 2016-05-31 | 2017-01-04 | 江苏高中压阀门有限公司 | A kind of cryogenic globe valve |
| WO2017079898A1 (en) * | 2015-11-10 | 2017-05-18 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Press fit valve adapation for top entry valve in cryogenic service |
| JP2017172754A (en) * | 2016-03-25 | 2017-09-28 | 共栄バルブ工業株式会社 | Spherical valve for cryogenic temperature |
| CN108692038A (en) * | 2018-05-28 | 2018-10-23 | 张家港富瑞阀门有限公司 | A kind of Novel ultralow-temperature shut-off valve and its operational method |
| CN212868476U (en) * | 2020-06-19 | 2021-04-02 | 东一阀门制造(南通)有限公司 | Novel small-bore low-temperature stop valve |
-
2021
- 2021-10-20 CN CN202111222564.6A patent/CN113983214A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7251481A (en) * | 1980-07-03 | 1982-01-07 | Bestobell (U.K.) Ltd. | Cryogenic valve gland |
| WO1998016766A1 (en) * | 1996-10-15 | 1998-04-23 | Process Systems International, Inc. | Cryogenic fluid process containment valve, method and system |
| CN2401739Y (en) * | 1999-10-29 | 2000-10-18 | 宁波埃美柯铜阀门有限公司 | Stop valve |
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| CN203730912U (en) * | 2014-01-22 | 2014-07-23 | 大连大高阀门股份有限公司 | Sealing structure capable of guaranteeing zero leakage at valve rod under LNG ultra-low temperature working condition |
| CN204153161U (en) * | 2014-10-16 | 2015-02-11 | 开封瑞科阀门有限公司 | The seal arrangement of dark bar ultralow temperature stop valve |
| WO2017079898A1 (en) * | 2015-11-10 | 2017-05-18 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Press fit valve adapation for top entry valve in cryogenic service |
| CN205479583U (en) * | 2015-12-24 | 2016-08-17 | 安科特种阀门有限公司 | In -band leaks super low temperature check valve of function |
| JP2017172754A (en) * | 2016-03-25 | 2017-09-28 | 共栄バルブ工業株式会社 | Spherical valve for cryogenic temperature |
| CN205859177U (en) * | 2016-05-31 | 2017-01-04 | 江苏高中压阀门有限公司 | A kind of cryogenic globe valve |
| CN108692038A (en) * | 2018-05-28 | 2018-10-23 | 张家港富瑞阀门有限公司 | A kind of Novel ultralow-temperature shut-off valve and its operational method |
| CN212868476U (en) * | 2020-06-19 | 2021-04-02 | 东一阀门制造(南通)有限公司 | Novel small-bore low-temperature stop valve |
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| 吕延彬;郭睿;: "超低温阀门的结构优化设计", 科技创新与应用, no. 10 * |
| 吴业飞;章成选;陈碧碧;王章章;: "一种新型液化天然气低温固定球阀结构设计", 石油化工设备, no. 05 * |
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