CN103016808A - Liquefied natural gas (LNG) tank car emergency release valve - Google Patents

Liquefied natural gas (LNG) tank car emergency release valve Download PDF

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Publication number
CN103016808A
CN103016808A CN2012105690926A CN201210569092A CN103016808A CN 103016808 A CN103016808 A CN 103016808A CN 2012105690926 A CN2012105690926 A CN 2012105690926A CN 201210569092 A CN201210569092 A CN 201210569092A CN 103016808 A CN103016808 A CN 103016808A
Authority
CN
China
Prior art keywords
valve
lng
emergency release
tank car
seal
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
Application number
CN2012105690926A
Other languages
Chinese (zh)
Inventor
江涛
杨国柱
甘鹏
马颖玲
罗军
魏瑛
武佳慧
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Huaqi Houpu Holding Co Ltd
Original Assignee
Chengdu Huaqi Houpu Holding Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chengdu Huaqi Houpu Holding Co Ltd filed Critical Chengdu Huaqi Houpu Holding Co Ltd
Priority to CN2012105690926A priority Critical patent/CN103016808A/en
Publication of CN103016808A publication Critical patent/CN103016808A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a liquefied natural gas (LNG) tank car emergency release valve. The emergency release valve comprises an upper valve body and a lower valve body, wherein an upper seal cartridge is installed in the upper valve body, a lower seat cartridge is installed in the lower valve body, the lower end of the upper seal cartridge is propped against the upper end of the lower seal cartridge, the upper and lower seal cartridges are hollow seal cartridges, LNG channels are respectively formed in the hollow seal cartridges, the upper valve body and the lower valve body are in butt joint with each other and then are mutually connected through an emergency release screw, and an emergency release part is arranged in the middle of the emergency release screw. The emergency release valve is simple and novel in structure, can be suitable for the emergency release protection under the working conditions that the medium temperature is above 162 DEG C below zero and the pressure is below 2.5MPa, when a certain tensile force is applied between the upper valve body and the lower valve body, the upper valve body and the lower valve body can be automatically separated from each other and are respectively sealed so as to prevent leakage, and the pipeline and equipment are protected.

Description

A kind of LNG tank car Pull breaking ualve
Technical field
The present invention relates to valve field, specifically is a kind of LNG tank car Pull breaking ualve.
Background technique
As everyone knows, along with the high speed development of LNG technology, the safety requirement of LNG storage and distribution station is higher, so determined the demand of LNG storage and distribution station to various safety installationss.The promulgation of NB/T 1001-2011 LNG Liquefied natural gas (LNG) Vehicle Fueling Station technical specification, requiring each LNG gas station is security consideration, must install and the safe breaking device of use liquid filler, and liquid filler has been made safety requirement with safe Pull breaking ualve structure and performance.But also do not cause enough attention for whether Pull breaking ualve is installed on the charge and discharge rubber lined hose of LNG storage and distribution station.
Under the nominal situation, Pull breaking ualve can not affect normal loading/unloading vehicles or filling, can guarantee that liquid feeding is smooth and easy; When at certain External Force Acting, Pull breaking ualve can disconnect by automatic safe, and two ends meeting self-closed, without fluid leakage, and protection pipeline, device security.The fastening device that its main structure body is generally two cut-off valves and two cut-off valves are coupled together, according to the difference of connected materials handling equipment, yet the structural type of selected cut-off valve and fastening device also is not quite similar.In LNG cargo handling process or LNG filling process, tank car (train, automobile) is because of reasons such as operate misses, in the situation of also not separating with flexible pipe (or loading and unloading arm), namely sail out of the working area, break connecting tube and cause oil product to leak in a large number might to cause extraordinarily serious safety accident; Or tank car loads and unloads, and needs tank car to flee the scene rapidly such as reasons such as the scene catch fire suddenly, can not with normal method with tank car and loading and unloading arm separately, also can lead to the great person and property safety accident, economic loss and environmental pollution.
 
Summary of the invention
In LNG cargo handling process or LNG filling process, tank car (train, automobile) is because of reasons such as operate misses, in the situation of also not separating with flexible pipe (or loading and unloading arm), namely sail out of the working area, break connecting tube and cause oil product to leak in a large number might to cause extraordinarily serious safety accident; Or tank car loads and unloads, and needs tank car to flee the scene rapidly such as reasons such as the scene catch fire suddenly, can not with normal method with tank car and loading and unloading arm separately, also can lead to the great person and property safety accident, economic loss and environmental pollution.
The object of the invention is to address the above problem, a kind of novelty simple in structure is provided, breaks effective LNG tank car Pull breaking ualve at this.
The present invention is achieved in that a kind of LNG tank car Pull breaking ualve of structure, it is characterized in that: comprise upper valve body and lower valve body, in this upper valve body, upper sleeve gasket is installed, in the lower valve body lower sleeve gasket is installed, described upper sleeve gasket lower end is against on the described lower sleeve gasket upper end, and upper and lower stuffing box gland is hollow stuffing box gland, and there is the LNG runner its inside, described upper and lower valve body docking connects by breaking screw, and the described screw middle part of breaking is provided with the section of breaking.
The equipped tank car Pull breaking ualve of LNG filling station is to guaranteeing the major action of safety and environmental protection in the LNG storage and transport process.The present invention has overcome defective of the prior art, and the technological scheme of employing is to install a kind of Pull breaking ualve additional at the liquid feeding flexible pipe, under the nominal situation; when at certain External Force Acting, Pull breaking ualve can disconnect by automatic safe, and two ends meeting self-closed; without fluid leakage, protection pipeline, device security.
The invention has the advantages that: the present invention's novelty simple in structure, can adapt to medium temperature more than-162 ℃, the operating conditions of pressure below 2.5MPa break protection, be subject between upper and lower valve body under certain pulling force effect, valve body can be thrown off automatically up and down, simultaneously each selfsealing, Leakage prevention, protection pipeline, device security; It has simple in structure, volume is little, easy to install, be easy to safeguard, advantage that cost is low.
Description of drawings
Fig. 1 is described tank car Pull breaking ualve structure accompanying drawing
Fig. 2 breaks the screw partial enlarged drawing
Wherein: 101, upper valve body, 102, lower valve body, 103a, upper sleeve gasket, 103b, lower sleeve gasket, 104, break screw, 104a, break section, 105, the spring energy-storage seal ring, 106, the hole jump ring.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing 1, and the technological scheme in the embodiment of the invention is clearly and completely described, and obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment who obtains under the creative work prerequisite.
As shown in Figure 1, the invention provides a kind of LNG tank car Pull breaking ualve, comprise upper valve body 101 and lower valve body 102, in this upper valve body 101, upper sleeve gasket 103a is installed, in the lower valve body 102 lower sleeve gasket 103b is installed, described upper sleeve gasket 103a lower end is against on the described lower sleeve gasket 103b upper end, and upper and lower stuffing box gland 103a, 103b are hollow stuffing box gland, and there is the LNG runner its inside.Different from other Pull breaking ualve product, this LNG tank car Pull breaking ualve does not adopt the entity spool is installed in the valve body, the technological scheme that fluid circulates from runner between spool and the valve body, but designed hollow stuffing box gland, LNG flows through from the stuffing box gland inner flow passage.Adopt such design, the flow area area is large, can obtain larger flow, and is very useful for boosting productivity.Described upper 101, lower valve body 102 docking connect by breaking screw 104, and described screw 104 middle parts of breaking are provided with and break the 104a of section, this diameter of breaking the 104a of section less than Break screw rod sectionDiameter, as shown in Figure 2.The pulling force overrate that between upper and lower valve body, is subject to, valve body can be thrown off automatically up and down, and upper and lower stuffing box gland is pushed to the valve seal end face under the effect of pipeline inner fluid self pressure simultaneously, realizes isolating seal, prevents from revealing.
Above-mentioned explanation makes related domain professional and technical personnel can realize or use the present invention.Therefore, the present invention will can not be restricted to shown in this article these and implement, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (1)

1. LNG tank car Pull breaking ualve, it is characterized in that: comprise upper valve body (101) and lower valve body (102), upper sleeve gasket (103a) is installed in this upper valve body (101), lower sleeve gasket (103b) is installed in the lower valve body (102), described upper sleeve gasket (103a) lower end is against on described lower sleeve gasket (103b) upper end, on, lower sleeve gasket (103a, 103b) be hollow stuffing box gland, there is the LNG runner its inside, on described, lower valve body (101,102) docking connects by breaking screw (104), and described screw (104) middle part of breaking is provided with the section of breaking (104a).
CN2012105690926A 2012-12-25 2012-12-25 Liquefied natural gas (LNG) tank car emergency release valve Pending CN103016808A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012105690926A CN103016808A (en) 2012-12-25 2012-12-25 Liquefied natural gas (LNG) tank car emergency release valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012105690926A CN103016808A (en) 2012-12-25 2012-12-25 Liquefied natural gas (LNG) tank car emergency release valve

Publications (1)

Publication Number Publication Date
CN103016808A true CN103016808A (en) 2013-04-03

Family

ID=47965737

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012105690926A Pending CN103016808A (en) 2012-12-25 2012-12-25 Liquefied natural gas (LNG) tank car emergency release valve

Country Status (1)

Country Link
CN (1) CN103016808A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105905859A (en) * 2016-06-03 2016-08-31 中国寰球工程公司 Pull-off prevention protection device for tank truck
CN106352191A (en) * 2016-09-23 2017-01-25 成都九十度工业产品设计有限公司 Breaking device for buildings

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2906280A (en) * 1955-12-12 1959-09-29 Sun Oil Co Break-away coupling
GB2076917A (en) * 1980-06-03 1981-12-09 Alpha Process Control Break-away coupling for incorporation in hoselines or pipelines
CN2400651Y (en) * 1999-12-29 2000-10-11 北京市建筑五金科研实验厂 Heating three-way ball valve
CN1556026A (en) * 2004-01-12 2004-12-22 应建忠 Abruption valve
CN201779323U (en) * 2010-09-27 2011-03-30 重庆四联油气设备制造有限公司 Liquefied natural gas (LNG) dispenser release coupler
CN102207233A (en) * 2011-04-11 2011-10-05 成都华气厚普燃气成套设备有限公司 Pipeline protector of LNG (Liquefied Natural Gas) liquid filling machine
CN102425694A (en) * 2011-12-20 2012-04-25 成都华气厚普机电设备股份有限公司 Break-away valve

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2906280A (en) * 1955-12-12 1959-09-29 Sun Oil Co Break-away coupling
GB2076917A (en) * 1980-06-03 1981-12-09 Alpha Process Control Break-away coupling for incorporation in hoselines or pipelines
CN2400651Y (en) * 1999-12-29 2000-10-11 北京市建筑五金科研实验厂 Heating three-way ball valve
CN1556026A (en) * 2004-01-12 2004-12-22 应建忠 Abruption valve
CN201779323U (en) * 2010-09-27 2011-03-30 重庆四联油气设备制造有限公司 Liquefied natural gas (LNG) dispenser release coupler
CN102207233A (en) * 2011-04-11 2011-10-05 成都华气厚普燃气成套设备有限公司 Pipeline protector of LNG (Liquefied Natural Gas) liquid filling machine
CN102425694A (en) * 2011-12-20 2012-04-25 成都华气厚普机电设备股份有限公司 Break-away valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105905859A (en) * 2016-06-03 2016-08-31 中国寰球工程公司 Pull-off prevention protection device for tank truck
CN105905859B (en) * 2016-06-03 2018-03-16 中国寰球工程公司 A kind of tank car anti-slip protection device
CN106352191A (en) * 2016-09-23 2017-01-25 成都九十度工业产品设计有限公司 Breaking device for buildings

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SE01 Entry into force of request for substantive examination
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Application publication date: 20130403

C12 Rejection of a patent application after its publication