CN101750225A - Over-flow checking table of emergency cut-off valve - Google Patents
Over-flow checking table of emergency cut-off valve Download PDFInfo
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- CN101750225A CN101750225A CN200910215467A CN200910215467A CN101750225A CN 101750225 A CN101750225 A CN 101750225A CN 200910215467 A CN200910215467 A CN 200910215467A CN 200910215467 A CN200910215467 A CN 200910215467A CN 101750225 A CN101750225 A CN 101750225A
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- emergency cut
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Abstract
The invention discloses an over-flow checking table of an emergency cut-off valve. The structural characteristics of the over-flow checking table are as follows: a water pump is connected at the lower part of a water tank by a pipeline, and the pipeline is connected at the other end of the water pump; an electromagnetic flow rate meter, a pressure meter, an overflow valve, a stop valve and the detected emergency cut-off valve are sequentially connected on the pipeline; the other end of the overflow valve is connected with the water tank, the tail end of the pipeline is inserted into the upper part of the water tank, and a network paper-less recorder with the functions of measuring, displaying, storing and the like is connected on the electromagnetic flow rate meter. The checking table not only can accurately check out technical performance indexes of the emergency cut-off valve when the emergency cut-off valve is taken out of a factory, but also can periodically check the over-flow protecting function of the emergency cut-off valve, so as to ensure product quality and using function of the valve and to avoid safety accidents, thereby ensuring safety of a railway tank vehicle in the transportation process of liquefied gas. The checking table is safe, reliable, economical and friendly to the environment. Moreover, the checking table also has the following characteristics: the structure is simple, the using is convenient, and water replaces a dangerous medium.
Description
One, technical field
What the present invention relates to is a kind of flow verification calibration equipment of valve, especially a kind of over-flow checking table of emergency cut-off valve.
Two, background technology
In recent years, tank car because of the problems such as structure, setting and connected mode of tank car safety attachment cause the incident of dielectric leakage to happen occasionally, causes potential safety hazard to transportation by railroad in conveying liquified gas process.Be effectively to solve the potential safety hazard that tank car exists, guarantee that tank car in conveying liquified gas process safe, transforms the liquid phase quick action emergency valve of tank car, make the liquid phase quick action emergency valve must have the overcurrent limitation function.Both when take place situation velocity of medium such as piping failure too fast, when rate-of flow is above standard flow, the unsteady flap of quick action emergency valve will be closed automatically, avoids accident to take place.And whether maximum flow when closing with the unsteady flap that detects quick action emergency valve also of no use at present surpasses the checking device of state specified standards flow; carry out the technical indicator service check and the overcurrent protection function of periodic inspection quick action emergency valve in use in the time of can't dispatching from the factory to quick action emergency valve; do not guarantee the product quality and the functions of use of this valve, security incident still takes place easily.
Three, summary of the invention
In order to solve the deficiencies in the prior art, the purpose of this invention is to provide a kind of over-flow checking table of emergency cut-off valve, maximum flow when being used for detecting quick action emergency valve and closing the automatically flow that whether is above standard is to satisfy the requirement of tank car safe transport medium in conveying liquified, gas process.
Realize that the technical scheme that purpose of the present invention adopts is: this over-flow checking table of emergency cut-off valve is mainly taken into account the network recording instrument without paper by water tank, water pump, pipeline, surplus valve, tensimeter, Electromagnetic Flow and is formed; The bottom of water tank is connected with water pump by pipeline, and the other end of water pump is connected to pipeline, is connected to surplus valve, stop valve and the detected quick action emergency valve of electromagnetic flowmeter, tensimeter, other end water receiving case on the pipeline successively, and the tail end of pipeline inserts the top of water tank; Be connected to the network recording instrument without paper of functions such as having measurement, demonstration, storage on the electromagnetic flowmeter.
During detection, in water tank, inject 1/2～3/4 water, install the quick action emergency valve that needs detection, and make it be in closed condition; Open the flap of the emergency cut-off part of quick action emergency valve with the pressurization of the oil hand pump on the quick action emergency valve, start water pump and make its work, the tensimeter of observing on the pipeline makes its pressure stability when 0.5～0.6Mpa left and right sides, opens stop valve and guides medium into tested quick action emergency valve; Open the upper ball valve of quick action emergency valve then gradually, flow rises thereupon, closes voluntarily to the unsteady flap of quick action emergency valve, writes down the maximum flow of moment when closing from electromagnetic flowmeter, obtains detected data.
The invention has the beneficial effects as follows: the flow of whole process when using this checking table and can test quick action emergency valve and close from being opened to; technical performance index in the time of can accurately checking out quick action emergency valve to dispatch from the factory; and the overcurrent protection function of energy periodic inspection quick action emergency valve; the product quality and the functions of use of this valve have been guaranteed; avoided the generation of security incident, guaranteed that tank car is in conveying liquified gas process safe.This checking table also can be used for the overcurrent protection check of liquid gas truck tank quick action emergency valve.Owing to inserted the network recording instrument without paper, can accomplish on-the-spot demonstration and can show in the pulpit again, the store recording function is arranged again simultaneously, utilize internal memory and the external memory media can the long-time data of more reliable preservation, pass through USB interface, can be saved in data on the USB storage, can arrive PC to data transmission easily by USB storage.When needs are searched the quick action emergency valve test data sheet, can open computer at any time, just can find the flow rate test record of valve.Can be used for the test of periodic inspection quick action emergency valve inflow-rate of water turbine defencive function.This checking table is simple in structure, easy to use, and water replaces danger medium, reduces hazardous medium and leaks, and is safe and reliable, economic environmental protection.
Four, description of drawings
Fig. 1 is the structure connection layout of over-flow checking table of emergency cut-off valve of the present invention.
Five, embodiment
In the accompanying drawings, the main water tank of over-flow checking table of emergency cut-off valve of the present invention, water pump, pipeline, surplus valve, tensimeter, Electromagnetic Flow are taken into account network recording instrument without paper composition; The bottom of water tank 1 is connected with water pump 2 by pipeline 3, the other end of water pump 2 is connected to pipeline 3, be connected to surplus valve 7, stop valve 8 and the detected quick action emergency valve 9 of electromagnetic flowmeter 4, tensimeter 6, other end water receiving case 1 on the pipeline 3 successively, the tail end of pipeline 3 inserts the top of water tank 1; Be connected on the electromagnetic flowmeter 4 have measurement, the network recording instrument without paper 5 of function such as demonstration, storage.
During detection, in water tank, inject 1/2～3/4 water, install the quick action emergency valve that needs detection, and make it be in closed condition; Open the flap of the emergency cut-off part of quick action emergency valve with the pressurization of the oil hand pump on the quick action emergency valve, start water pump and make its work, the tensimeter of observing on the pipeline makes its pressure stability when 0.5～0.6Mpa left and right sides, open stop valve and guide medium into tested quick action emergency valve, the speed of opening stop valve should be slow and constant; (speed of opening ball valve should be slow, in order to avoid phenomenon is closed in the excessive appearance of pressure reduction too early before and after the overcurrent limiting valve to open the upper ball valve of quick action emergency valve then gradually.), flow rises to the unsteady flap of quick action emergency valve thereupon and closes voluntarily, writes down the maximum flow of moment when closing from electromagnetic flowmeter, obtains detected data.The unsteady flap permissible variation of turn-off transient maximum flow voluntarily is ± 10%, exceeds this scope and should adjust until qualified.Revision test three times, flow all should be in allowed band.
This checking table can detect the inflow-rate of water turbine that the nominal bore is the quick action emergency valve of DN50 and two kinds of specifications of DN65, at present the automobile-used quick action emergency valve of liquefied gas tank is commonly used also has only this two kinds of specifications, also can increase the product of other specification according to the demand in market.This checking table uses water as test(ing) medium, can test quick action emergency valve from being opened to the flow of the whole process before closing.The network recording instrument without paper 5 that picks out on the described electromagnetic flowmeter 4 has measurement, show, functions such as storage, it is the DX1000 new network recording instrument without paper that Japanese Yokogawa company produces, can accomplish on-the-spot demonstration and can show in the pulpit again, the store recording function is arranged again simultaneously, utilize internal memory and the external memory media can the long-time data of more reliable preservation, pass through USB interface, can be saved in data on the USB storage, can arrive PC to data transmission easily by USB storage, when needs are searched the quick action emergency valve test data sheet, can open computer at any time, just can find the flow rate test record of valve.
Described quick action emergency valve belongs to combined valve, it by the band that directly contacts with medium the emergency cut-off valve portion of flow restriction and the ball valve on top partly combine, quick action emergency valve is the gas-liquid phase valve of the main gateway of liquid gas storage and transportation equipment, when the loading and unloading material, at first by force emergency cut-off is partially opened, manually top ball valve is opened again and loaded and unloaded material by oil hand pump.When situations such as generation piping failures, rate-of flow surpasses rated flow, and the unsteady flap of emergency cut-off part can be closed automatically.So-called overcurrent protection is exactly in the medium cargo handling process, and when media flow speed surpassed permissible value, this device can be closed automatically, makes the media flow speed control below permissible value.Thereby quick action emergency valve is one of requisite safety attachment of train tank car.
This checking table should be put water only, and inlet is sealed in the long-term storage process, is strictly on guard against that dirt enters, and should leave dry ventilate indoor in, does not allow outdoor storage.Should check when reusing whether each instrument and equipment is intact errorless.
Claims (2)
1. over-flow checking table of emergency cut-off valve, main water tank, water pump, pipeline, surplus valve, tensimeter, Electromagnetic Flow are taken into account the network recording instrument without paper and are formed; It is characterized in that: the bottom of described water tank (1) is connected with water pump (2) by pipeline (3), the other end of water pump (2) is connected to pipeline (3), be connected to surplus valve (7), stop valve (8) and the detected quick action emergency valve (9) of electromagnetic flowmeter (4), tensimeter (6), other end water receiving case (1) on the pipeline (3) successively, the tail end of pipeline (3) inserts the top of water tank (1).
2. over-flow checking table of emergency cut-off valve as claimed in claim 1 is characterized in that: be connected on the described electromagnetic flowmeter (4) have measurement, the network recording instrument without paper (5) of function such as demonstration, storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910215467A CN101750225A (en) | 2009-12-31 | 2009-12-31 | Over-flow checking table of emergency cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910215467A CN101750225A (en) | 2009-12-31 | 2009-12-31 | Over-flow checking table of emergency cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101750225A true CN101750225A (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910215467A Pending CN101750225A (en) | 2009-12-31 | 2009-12-31 | Over-flow checking table of emergency cut-off valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840552A (en) * | 2017-03-30 | 2017-06-13 | 天津大学 | A kind of quick action emergency valve overall calibration system |
| CN112082753A (en) * | 2019-06-12 | 2020-12-15 | 中国石油化工股份有限公司 | Overcurrent performance testing device and method for emergency cut-off valve |
-
2009
- 2009-12-31 CN CN200910215467A patent/CN101750225A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840552A (en) * | 2017-03-30 | 2017-06-13 | 天津大学 | A kind of quick action emergency valve overall calibration system |
| CN112082753A (en) * | 2019-06-12 | 2020-12-15 | 中国石油化工股份有限公司 | Overcurrent performance testing device and method for emergency cut-off valve |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Lu Shaobai Inventor after: Lu Jingyang Inventor after: Wang Qi Inventor after: Zhang Ximing Inventor after: Shi Xiurong Inventor after: Zhao Zhengang Inventor after: Liu Xinju Inventor after: Hao Wensheng Inventor after: Zhang Caixia Inventor before: Lu Shaobai Inventor before: Lu Jingyang Inventor before: Wang Qi Inventor before: Zhang Ximing Inventor before: Zhao Zhengang Inventor before: Liu Xinju Inventor before: Hao Wensheng Inventor before: Zhang Caixia |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LU SHAOBO LU JINGYANG WANG QI ZHANG XIMING ZHAO ZHENGANG LIU XINJU HAO WENSHENG ZHANG CAIXIA TO: LU SHAOBO LU JINGYANG WANG QI ZHANG XIMING SHI XIURONG ZHAO ZHENGANG LIU XINJU HAO WENSHENG ZHANG CAIXIA |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100623 |