CN112816206A - Tank car emergency cut-off valve function testing method and device - Google Patents
Tank car emergency cut-off valve function testing method and device Download PDFInfo
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- CN112816206A CN112816206A CN202110062591.5A CN202110062591A CN112816206A CN 112816206 A CN112816206 A CN 112816206A CN 202110062591 A CN202110062591 A CN 202110062591A CN 112816206 A CN112816206 A CN 112816206A
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Abstract
The invention is suitable for the field of tank car accessories, and provides a function testing device for an emergency cut-off valve of a tank car, which comprises a first hose, one end of the first hose is connected with the cut-off valve, the cut-off valve is arranged on a tank body of the tank car, a first valve mechanism is arranged on the first hose, a first joint is arranged at the other end of the first hose, the device also comprises a movable and liftable testing platform, and a container is arranged on the testing platform; the opening of the container is connected with one end of a second hose; the second hose is provided with a pressure testing device, a flow testing device and a second valve mechanism; one end of the second hose is provided with a second joint, and the first joint is matched with the second joint; the stop valve is also provided with an induction testing head which is connected with a remote switch through a circuit; the device can reduce the workload of experimenters, increase the safety and ensure that the experimental result is more accurate.
Description
Technical Field
The invention relates to the field of tank car accessories, in particular to a method and a device for testing functions of an emergency cut-off valve.
Background
The emergency cut-off valve is also called a safety cut-off valve, and is used for rapidly closing or opening the valve when an emergency occurs, so that accidents are avoided. The tank truck filled with dangerous media such as liquid ammonia, liquefied petroleum gas and the like is provided with an emergency shut-off valve, and in the loading, unloading and transportation processes, if accidents such as misoperation, traffic accidents and loading and unloading hose breakage occur, the shut-off valve can cut off the outlet pipeline of the tank body at the highest speed to prevent further expansion of the accidents.
At present, two testing methods are mainly used for the function test of the emergency cut-off valve, the first method is that after a tank car is subjected to an air tightness test, an experimenter directly opens the emergency cut-off valve, then manually and slowly opens a manual ball valve, and after a certain flow is reached, a remote control switch of the emergency cut-off valve is manually operated to enable the emergency cut-off valve to generate an emergency cut-off action, and the experimenter subjectively judges the time required by the cut-off of the emergency cut-off valve, namely, the time required for testing the cut-off valve to. And then the opening function of the emergency cut-off valve is recovered, the manual ball valve is continuously and slowly opened, so that the exhaust flow is slowly increased until the emergency cut-off valve is automatically closed due to overcurrent, namely the cut-off valve is tested for sensitivity, and the cut-off valve can act when the flow is observed. Due to the uncertainty of manual testing, this test method can only subjectively judge the approximate time required for the emergency shut-off valve to shut off and the flow value required when an overcurrent action occurs.
The other method is to adopt an emergency cut-off valve calibration stand to perform related function tests, wherein the calibration stand is large in size, uses water circulation and utilizes the principle of pump pressurization to perform the tests of the closing function and the overflowing function of the emergency cut-off valve. When carrying out relevant function test, need pull down emergency cutoff valve from the tank car to reinstallate in calibration stand hydrologic cycle pipeline, maintainer work load is great. Meanwhile, in the process of a function test, the emergency cut-off valve is used for emergency cut-off, and huge impact on the pipeline and the pump can be caused, so that the calibration stand is damaged.
Therefore, the applicant provides a novel function testing device of the emergency cut-off valve and a testing method suitable for the device, the testing device is suitable for tank trucks with different heights, the cut-off valve does not need to be detached from the tank truck during testing, the workload of maintainers is greatly reduced, and the safety is enhanced; meanwhile, the uncertainty of manual detection is also avoided.
Disclosure of Invention
The invention provides a method and a device for testing the function of an emergency cut-off valve, and aims to solve the problems of more uncertain factors, larger labor capacity and lower safety of the conventional cut-off valve testing method.
In order to realize the purpose, the invention adopts the following technical scheme to realize the purpose:
a functional test device for an emergency cut-off valve of a tank car comprises a first hose with one end connected to the cut-off valve, wherein the cut-off valve is arranged on a tank body of the tank car; because the types of the tank cars are different, the heights of the cut-off valves are different; the device comprises a first hose, a second hose, a first valve mechanism, a first connector, a movable and liftable test platform, a second valve mechanism and a second connector, wherein the first hose is provided with the first valve mechanism capable of controlling the on-off of the inside of the first hose; after the test platform moves to the position near the tank car, the test platform is lifted according to the height of a cutting valve on the tank car; a container for containing flowing materials stored in the tank body is arranged on the testing platform; the opening of the container is connected with one end of a second hose; a pressure gauge, a flowmeter and a second valve mechanism for controlling the on-off of the inside of the second hose are arranged on the second hose; a second joint is arranged at one end of the second hose, and the first joint is matched with the second joint; the pressure testing device, the flow testing device and the second valve mechanism are all connected with the controller; the stop valve is also provided with an induction testing head, and the induction testing head is connected with a remote switch through a circuit; the remote switch can control the cut-off valve switch.
Furthermore, a lifting mechanism is fixedly connected to the test platform, and the lifting mechanism comprises a lifting part capable of suspending and supporting the first hose and the second hose; when using this testing arrangement, because the trip valve does not pull down on the tank car, consequently first hose and the second hose of connection between trip valve and test platform are in unsettled state in fact, receive the action of gravity, the hose can produce the multistage and buckle, influence the flow transmission in the hose, lead to further influencing the test result of manometer and flowmeter, consequently, lift portion through the design and lift first hose and second hose portion, make hose portion whole keep leveling in one, can not produce the state of great buckling, thereby avoid buckling the part to influence the test result.
Furthermore, the lifting mechanism comprises a wire coil and a connecting part, and cloth is wound on the wire coil; the connecting part can be fixedly arranged below the cut-off valve, and a fixed end capable of clamping one end of cloth is arranged on the connecting part; this connecting portion can be formed by the steel sheet welding, fixes in the place that is close to the trip valve below through bolt or wire rope, and the stiff end can be a crooked syringe needle, and this syringe needle pierces cloth one end in order taut cloth.
Furthermore, the testing device also comprises a lifter body, a movable guide wheel is arranged below the lifter body, and the testing platform is installed on a scissor mechanism of the lifter body; the elevator body is lifted by using an oil cylinder as a power source.
Further, the first joint and the second joint are both quick joints; so as to facilitate the quick butt joint of the two hoses.
Further, the first valve mechanism is a manual ball valve, and the second valve mechanism is an electric control valve.
Furthermore, a laser positioning lamp is arranged on the test platform and is close to the lower part of the wire coil; this laser positioning lamp level sets up towards trip valve direction transmission laser to the height that the laboratory technician confirmed that test platform needs to go up and down is assisted.
The invention also provides the following test method by using the device;
the method for testing the time required by the cut-off valve to cut off the pipeline comprises the following steps:
s1, carrying out an air tightness test on the tank body;
s2, connecting the container with a gas phase pipe or a liquid phase pipe of the tank body through a first hose, a second hose, a first joint, a second joint and a stop valve;
an experimenter installs a connecting part at a position close to the lower part of the cut-off valve, a hand-operated wire coil puts down cloth, one end of the cloth on the wire coil is pulled to be close to the connecting part, so that the fixed end clamps one end of the cloth, then the hand-operated wire coil tightens the cloth, and fixes a wire coil crank, so that the cloth supports the first hose and the second hose;
s3, connecting the sensing test head to the emergency cut-off valve, adjusting the position, and measuring the position of the emergency cut-off valve action mechanism by the sensing test head to judge the time of starting the action of the emergency cut-off valve;
s4, manually opening the emergency cutoff valve, and slowly opening the first valve mechanism, wherein the second valve mechanism is in a closed state;
s5, adjusting the second valve mechanism to enable the valve part of the second valve mechanism to be opened, after the flow of flowing substances is stable, manually operating the remote switch to control the cutoff valve to be cut off, recording the finish time of the cutoff valve completely cutting off the second hose by the flow testing device when the flow of the substances is close to zero, recording the action start time of the cutoff valve by the induction testing head, wherein the difference between the finish time and the start time is the testing value of the cutoff time of the cutoff valve.
The method for testing the flow value required by the over-current action of the cut-off valve comprises the following steps:
s1, carrying out an air tightness test on the tank body;
s2, connecting the container with a gas phase pipe or a liquid phase pipe of the tank body through a first hose, a second hose, a first joint, a second joint and a stop valve;
an experimenter installs a connecting part at a position close to the lower part of the cut-off valve, a hand-operated wire coil puts down cloth, one end of the cloth on the wire coil is pulled to be close to the connecting part, so that the fixed end clamps one end of the cloth, then the hand-operated wire coil tightens the cloth, and fixes a wire coil crank, so that the cloth supports the first hose and the second hose;
s3, manually opening the emergency cutoff valve, and slowly opening the first valve mechanism, wherein the second valve mechanism is in a closed state;
and S4, slowly opening the second valve mechanism until the cutoff valve generates cutoff action due to overlarge flow, wherein the maximum value measured by the flow testing device is the flow testing value.
The invention has the beneficial effects that: the device can accurately test the performance of the cut-off valve by the operating personnel through the matching arrangement of the first hose, the second hose, the first joint, the second joint, the first valve mechanism, the second valve mechanism, the flowmeter, the pressure gauge, the controller, the movable lifting test platform and the induction test heads, so that errors caused by the subjectivity of the experimenter are avoided, the cut-off valve does not need to be detached from a tank car, and the working intensity of the experimenter is greatly reduced; the lifting mechanism is arranged to support the first hose and the second hose in the air, so that the hose portion is integrally kept flat, a large bending state cannot be generated, and the test result is prevented from being influenced by the bending portion.
Drawings
FIG. 1 is a schematic diagram of the present invention during testing;
FIG. 2 is a schematic structural diagram of a testing apparatus;
FIG. 3 is a schematic illustration of the testing of the present invention;
fig. 4 is a schematic view of the first hose or the second hose being bent.
In the figure: 1. a shut-off valve; 2. a first hose; 3. a first valve mechanism; 4. a first joint; 5. a laser positioning lamp; 6. a test platform; 7. a container; 8. a second hose; 9. a pressure gauge; 10. a flow meter; 11. wire coils; 12. a connecting portion; 13. an elevator body; 14. a controller; 15. a remote switch; 16. a lifting part.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention.
As shown in fig. 1-3, the functional test device for the emergency cut-off valve of the tank truck comprises a first hose 2 with one end connected to a cut-off valve 1, wherein the cut-off valve 1 is arranged on a tank body of the tank truck; because the types of the tank cars are different, the heights of the cut-off valves 1 are different; the device comprises a first hose 2, a second hose 2, a first valve mechanism 3 and a test platform 6, wherein the first hose 2 is provided with the first valve mechanism 3 capable of controlling the on-off of the inside of the first hose 2, the other end of the first hose 2 is provided with a first joint 4, and the device also comprises the test platform 6 which can move and can be lifted; after the test platform 6 moves to the position near the tank car, the test platform is lifted according to the height of the cutting valve 1 on the tank car; the testing platform 6 is provided with a container 7 for containing flowing materials stored in the tank body; the opening of the container 7 is connected with one end of a second hose 8; a pressure gauge 9, a flowmeter 10 and a second valve mechanism for controlling the on-off of the inside of the second hose 8 are arranged on the second hose 8; a second joint is arranged at one end of the second hose 8, and the first joint 4 is matched with the second joint; the pressure testing device, the flow testing device and the second valve mechanism are all connected with the controller 14; the stop valve 1 is also provided with an induction testing head, and the induction testing head is connected with a remote switch 15 through a circuit; the remote switch 15 can control the on-off of the cut-off valve 1.
Furthermore, a lifting mechanism is fixedly connected to the test platform 6, and the lifting mechanism comprises a lifting part capable of suspending and supporting the first hose 2 and the second hose 8; when using this testing arrangement, because trip valve 1 does not pull down on the tank car, consequently first hose 2 and the second hose 8 of connection between trip valve 1 and test platform 6 are in unsettled state in fact, receive the action of gravity, the hose can produce the multistage and buckle, influence the flow transmission in the hose, lead to further influencing the test result of manometer 9 and flowmeter 10, consequently, hold first hose 2 and second hose 8 part through the design portion of lifting, make hose part whole keep one smooth, can not produce the state of great buckling, thereby avoid buckling the part to influence the test result.
Further, the lifting mechanism comprises a wire coil 11 and a connecting part 12, and cloth is wound on the wire coil 11; the connecting part 12 can be fixedly arranged below the cut-off valve 1, and a fixed end capable of clamping one end of cloth is arranged on the connecting part 12; the connecting portion 12 may be formed by welding steel plates and fixed by bolts or steel cables at a position close to the lower portion of the cut-off valve 1, and the fixed end may be a bent needle which pierces one end of the cloth to tighten the cloth.
Furthermore, the testing device also comprises a lifter body 13, a movable guide wheel is arranged below the lifter body 13, and the testing platform 6 is installed on a scissor mechanism of the lifter body 13; the elevator body 13 is lifted by using an oil cylinder as a power source.
Further, the first joint 4 and the second joint are both quick joints; so as to facilitate the quick butt joint of the two hoses.
Further, the first valve mechanism 3 is a manual ball valve, and the second valve mechanism is an electric control valve.
Further, a laser positioning lamp 5 is arranged on the test platform 6, and the laser positioning lamp 5 is arranged close to the lower part of the wire coil 11; this laser positioning lamp 5 level sets up towards trip valve 1 direction transmission laser to the height that test platform 6 need go up and down is confirmed to supplementary laboratory technician.
The method of testing using the device is as follows;
the method for testing the time required by the cut-off valve 1 to cut off the pipeline comprises the following steps:
s1, carrying out an air tightness test on the tank body;
s2, connecting the container 7 with a gas phase pipe or a liquid phase pipe of the tank body through a first hose 2, a second hose 8, a first joint 4, a second joint and a stop valve 1;
an experimenter installs a connecting part 12 at a position close to the lower part of the cut-off valve 1, the hand-operated wire coil 11 puts down cloth, one end of the cloth on the wire coil 11 is pulled to be close to the connecting part 12, so that the fixed end clamps one end of the cloth, then the hand-operated wire coil 11 tightens the cloth, fixes a crank of the wire coil 11, and the cloth supports the first hose 2 and the second hose 8;
s3, connecting the induction testing head to the quick action emergency valve 1, adjusting the position, and measuring the position of the action mechanism of the quick action emergency valve 1 by the induction testing head to judge the time for starting the action of the quick action emergency valve 1;
s4, manually opening the emergency cut-off valve 1, and slowly opening the first valve mechanism 3, wherein the second valve mechanism is in a closed state;
s5, adjusting the second valve mechanism to enable the valve part of the second valve mechanism to be opened, after the flow of flowing substances is stable, manually operating the remote switch 15 to control the cut-off valve 1 to be cut off, when the flow of the substances is close to zero, recording the finish time of completely cutting off the second hose 8 by the cut-off valve 1 by the flow testing device, and recording the action start time of the cut-off valve 1 by the induction testing head, wherein the difference between the finish time and the start time is the testing value of the cut-off time of the cut-off valve 1.
The method for testing the flow value required by the over-current action of the cut-off valve 1 comprises the following steps:
s1, carrying out an air tightness test on the tank body;
s2, connecting the container 7 with a gas phase pipe or a liquid phase pipe of the tank body through a first hose 2, a second hose 8, a first joint 4, a second joint and a stop valve 1;
an experimenter installs a connecting part 12 at a position close to the lower part of the cut-off valve 1, the hand-operated wire coil 11 puts down cloth, one end of the cloth on the wire coil 11 is pulled to be close to the connecting part 12, so that the fixed end clamps one end of the cloth, then the hand-operated wire coil 11 tightens the cloth, fixes a crank of the wire coil 11, and the cloth supports the first hose 2 and the second hose 8;
s3, manually opening the emergency cut-off valve 1, and slowly opening the first valve mechanism 3, wherein the second valve mechanism is in a closed state;
and S4, slowly opening the second valve mechanism until the shut-off valve 1 is shut off due to overlarge flow, wherein the maximum value measured by the flow test device is the flow test value.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. A functional test device for an emergency cut-off valve of a tank car comprises a first hose with one end connected to the cut-off valve, wherein the cut-off valve is installed on a tank body of the tank car; the opening of the container is connected with one end of a second hose; a pressure testing device capable of testing the pressure inside the second hose, a flow testing device capable of testing the flow of flowing substances inside the second hose and a second valve mechanism for controlling the on-off of the inside of the second hose are arranged on the second hose; a second joint is arranged at one end of the second hose, and the first joint is matched with the second joint; the pressure testing device, the flow testing device and the second valve mechanism are all connected with the controller; the stop valve is also provided with an induction testing head, and the induction testing head is connected with a remote switch through a circuit; the remote switch can control the cut-off valve switch.
2. The device for testing the function of the emergency cutoff valve of the tank car as claimed in claim 1, wherein a lifting mechanism is fixedly connected to the test platform, and the lifting mechanism comprises a lifting part capable of suspending and supporting the first hose and the second hose.
3. The device for testing the function of the emergency cut-off valve of the tank car as claimed in claim 2, wherein the lifting mechanism comprises a wire coil and a connecting part, and cloth is wound on the wire coil; connecting portion can fixed mounting in trip valve below, be provided with the stiff end that can the centre gripping cloth one end on the connecting portion.
4. The device for testing the function of the emergency cutoff valve of the tank car as claimed in claim 1, wherein the testing device further comprises a lifter body, a movable guide wheel is arranged below the lifter body, and the testing platform is mounted on a scissor fork mechanism of the lifter body.
5. The function test device for the emergency cut-off valve of the tank truck as claimed in claim 1, wherein the first joint and the second joint are quick joints.
6. The device for testing the function of the emergency cut-off valve of the tank truck as claimed in claim 1, wherein the first valve mechanism is a manual ball valve, and the second valve mechanism is an electrically controlled valve.
7. The device for testing the function of the emergency cut-off valve of the tank car as claimed in claim 1, wherein a laser positioning lamp is arranged on the test platform and is arranged close to the lower part of the wire coil.
8. A test method using the quick action emergency valve function test apparatus as set forth in claim 3, characterized by comprising the steps of;
s1, carrying out an air tightness test on the tank body;
s2, connecting the container with a gas phase pipe or a liquid phase pipe of the tank body through a first hose, a second hose, a first joint, a second joint and a stop valve;
s3, connecting the sensing test head to the emergency cut-off valve, adjusting the position, and measuring the position of the emergency cut-off valve action mechanism by the sensing test head to judge the time of starting the action of the emergency cut-off valve;
s4, manually opening the emergency cutoff valve, and slowly opening the first valve mechanism, wherein the second valve mechanism is in a closed state;
s5, adjusting the second valve mechanism to enable the valve part of the second valve mechanism to be opened, after the flow of flowing substances is stable, manually operating the remote switch to control the cutoff valve to be cut off, recording the finish time of the cutoff valve completely cutting off the second hose by the flow testing device when the flow of the substances is close to zero, recording the action start time of the cutoff valve by the induction testing head, wherein the difference between the finish time and the start time is the testing value of the cutoff time of the cutoff valve.
9. A test method using the quick action emergency valve function test apparatus as set forth in claim 3, characterized by comprising the steps of;
s1, carrying out an air tightness test on the tank body;
s2, connecting the container with a gas phase pipe or a liquid phase pipe of the tank body through a first hose, a second hose, a first joint, a second joint and a stop valve;
s3, manually opening the emergency cutoff valve, and slowly opening the first valve mechanism, wherein the second valve mechanism is in a closed state;
and S4, slowly opening the second valve mechanism until the cutoff valve generates cutoff action due to overlarge flow, wherein the maximum value measured by the flow testing device is the flow testing value.
10. A method for testing a function testing device of an emergency cut-off valve according to any one of claims 8 and 9, characterized in that after step S2, an experimenter installs a connecting part at a position close to the lower part of the cut-off valve, a hand-operated wire coil puts down cloth, one end of the cloth on the wire coil is pulled close to the connecting part, so that the fixed end clamps one end of the cloth, then the hand-operated wire coil tightens the cloth, a wire coil crank is fixed, the cloth supports the first hose and the second hose, and then the next step is carried out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110062591.5A CN112816206B (en) | 2021-01-18 | 2021-01-18 | Tank car emergency cut-off valve function testing method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110062591.5A CN112816206B (en) | 2021-01-18 | 2021-01-18 | Tank car emergency cut-off valve function testing method and device |
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| CN112816206A true CN112816206A (en) | 2021-05-18 |
| CN112816206B CN112816206B (en) | 2022-08-12 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55147334A (en) * | 1979-05-04 | 1980-11-17 | Mitsubishi Heavy Ind Ltd | Method of testing opening and closing of valve for cutting off fuel for boiler |
| CN101915564A (en) * | 2010-07-07 | 2010-12-15 | 江南大学 | Automatic inspection system of truck tank |
| CN106840552A (en) * | 2017-03-30 | 2017-06-13 | 天津大学 | A kind of quick action emergency valve overall calibration system |
| CN207946219U (en) * | 2018-04-10 | 2018-10-09 | 王小东 | A kind of stop valve on-line detecting system |
| KR102166660B1 (en) * | 2020-02-03 | 2020-10-16 | (주) 하늘기업 | Device for valve operation precision test |
| 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 |
-
2021
- 2021-01-18 CN CN202110062591.5A patent/CN112816206B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55147334A (en) * | 1979-05-04 | 1980-11-17 | Mitsubishi Heavy Ind Ltd | Method of testing opening and closing of valve for cutting off fuel for boiler |
| CN101915564A (en) * | 2010-07-07 | 2010-12-15 | 江南大学 | Automatic inspection system of truck tank |
| CN106840552A (en) * | 2017-03-30 | 2017-06-13 | 天津大学 | A kind of quick action emergency valve overall calibration system |
| CN207946219U (en) * | 2018-04-10 | 2018-10-09 | 王小东 | A kind of stop valve on-line detecting 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 |
| KR102166660B1 (en) * | 2020-02-03 | 2020-10-16 | (주) 하늘기업 | Device for valve operation precision test |
Non-Patent Citations (3)
| Title |
|---|
| 张春波等: "紧急切断阀过流切断性能校验系统研究", 《测控技术》 * |
| 杨怀磊 等.: "《一种大储量罐车紧急切断阀失灵检测方法研究》", 《科技通报》 * |
| 林文强: "危险品槽车紧急切断阀性能检验装置的开发", 《化学工程与装备》 * |
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