Movable multifunctional efficient emergency disposal integrated system for LNG tank car

Abstract

The utility model discloses a movable type multifunctional efficient emergency disposal integrated system for an LNG tank car. The movable type multifunctional efficient emergency disposal integrated system comprises a pressure relief mechanism, a liquid drainage mechanism and a filling mechanism. The pressure relief mechanism comprises a deflation pipeline, and one end of the deflation pipeline is connected with a tank car gas phase connecting mechanism. The tank car gas phase connecting mechanism comprises an accident tank car gas phase group and a target tank car gas phase group; the gas discharging pipeline is connected with an LNG storage mechanism and a nitrogen mechanism. The liquid drainage mechanism comprises a liquid drainage pipeline, an accident tank car liquid drainage pipeline group and a target tank car liquid drainage pipeline; the one-way valve, the flow meter and the XIV valve are sequentially arranged on the filling pipeline, one end of the filling pipeline is communicated with the liquid drainage pipeline, and a flange b is arranged at the other end of the filling pipeline. According to the utility model, quick response and efficient disposal are realized, the efficiency and safety of emergency disposal and transfer are greatly improved, the risk of personnel and environment is effectively reduced, the emergency disposal time is remarkably shortened, and the energy loss is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of emergency management, and specifically relates to a mobile multifunctional efficient emergency disposal integrated system for LNG tank car. BACKGROUND

[0002] With the increasingly wide application of liquefied natural gas (LNG) in the energy field, the long-distance transportation demand of LNG tank cars also increases, the LNG tank car is one of the key logistics links connecting the LNG receiving station and the terminal user, it transports LNG from the coastal area or large production facilities to the gas filling station or other consumption points in the inland area through road transportation, thereby ensuring the effective distribution of LNG in the nationwide range, however, with the increase of the transportation volume of the LNG tank car, the challenges it faces are increasingly highlighted, in the transportation process, the LNG tank car may encounter emergency situations such as leakage and collision, which poses a great threat to personnel safety, environment and energy supply. The traditional emergency disposal mode mostly relies on manual operation, on-site disordered discharge and the like, is time-consuming and inefficient and the safety is uncontrollable, and cannot meet the demand of rapid response and efficient disposal. At the same time, the existing transfer equipment is usually single in function and lacks the characteristics of integration and intelligence, and is difficult to adapt to the complex and changeable emergency scene, therefore, it is urgent to design a mobile multifunctional efficient emergency disposal integrated system for LNG tank car. CONTENT OF UTILITY MODEL

[0003] The utility model is proposed in order to solve the problems that the traditional emergency disposal mode in the prior art mostly relies on manual operation, on-site disordered discharge, is time-consuming and inefficient and cannot meet the demand of rapid response and efficient disposal, and the purpose is to provide a mobile multifunctional efficient emergency disposal integrated system for LNG tank car.

[0004] The utility model is realized through the following technical schemes:

[0005] The utility model provides a kind of LNG tank car mobile multifunctional high-efficiency emergency disposal integrated system, including pressure relief mechanism, liquid release mechanism and filling mechanism;The pressure relief mechanism includes gas exhaust pipeline, and one end of gas exhaust pipeline is connected with tank car gas phase connecting mechanism;The tank car gas phase connecting mechanism includes accident tank car gas phase group and target tank car gas phase group;The accident tank car gas phase group includes accident tank car gas exhaust pipeline and is arranged on accident tank car gas exhaust pipeline Ⅻ valve, one end of accident tank car gas exhaust pipeline is communicated with gas exhaust pipeline, and the other end is provided with d flange;The target tank car gas phase group includes target tank car gas exhaust pipeline and is arranged on target tank car gas exhaust pipeline XIII valve, one end of target tank car gas exhaust pipeline is communicated with gas exhaust pipeline, and the other end is provided with e flange;LNG storage mechanism and nitrogen mechanism are connected on gas exhaust pipeline respectively, and LNG storage mechanism is arranged on the side away from tank car gas phase connecting mechanism;The LNG storage mechanism includes vehicle-mounted LNG storage device, and the outlet end of vehicle-mounted LNG storage device is connected with gas exhaust pipeline by pipeline, and the outlet end of vehicle-mounted LNG storage device is provided with Ⅸ valve;The inlet end of vehicle-mounted LNG storage device is provided with I valve;The nitrogen mechanism includes nitrogen pipeline and is arranged on nitrogen pipeline Ⅺ valve, one end of nitrogen pipeline is communicated with gas exhaust pipeline, and the other end is provided with f flange, and vehicle-mounted nitrogen storage device is connected with f flange;The liquid release mechanism includes liquid release pipeline, accident tank car liquid release pipeline group and target tank car liquid release pipeline;The filling mechanism includes filling pipeline and is sequentially provided with check valve, flowmeter and XIV valve on filling pipeline, one end of filling pipeline is communicated with liquid release pipeline, and the other end of filling pipeline is provided with b flange;V valve is arranged on the liquid release pipeline between filling pipeline and liquid release pipeline connection and pump pipeline and liquid release pipeline connection.

[0006] In the above technical solution, the other end of the gas exhaust pipeline is connected with a flare, and the gas inlet end of the flare is provided with a X valve.

[0007] In the above technical solution, the gas inlet end pipeline of the X valve is provided with a coil device, and the gas exhaust pipeline is partially coiled on the coil device.

[0008] In the above technical solution, the gas phase pipeline of the accident tank car is connected with the d flange through a hose, and the gas phase pipeline of the transfer target tank car is connected with the e flange through a hose.

[0009] In the above technical solution, an VIII valve is arranged on the gas exhaust pipeline between the LNG storage mechanism and the nitrogen mechanism.

[0010] In the above technical solution, one end of the liquid release pipeline is connected with the inlet of the vehicle-mounted LNG storage device, and the other end of the liquid release pipeline is connected with the gas exhaust pipeline.

[0011] In the technical scheme, the accident tank truck liquid discharge pipeline group comprises a pump pipeline and an LNG pipeline connected in parallel, one end of the pump pipeline and the LNG pipeline is connected with the liquid discharge pipeline, and the other end is provided with a flange; a pump and a No.

[0012] In the technical scheme, one end of the target tank truck liquid discharge pipeline is connected with the liquid discharge pipeline, and the other end is provided with a flange, a No.

[0013] In the technical scheme, the pressure relief mechanism, the liquid discharge mechanism and the filling mechanism are arranged on the mobile chassis.

[0014] The beneficial effects of the utility model are as follows:

[0015] The utility model provides a kind of LNG tank truck mobile multifunctional efficient emergency disposal integrated system, through the innovative design of integration and intelligentization, realize quick response and efficient disposal, not only greatly improve the efficiency and safety of emergency disposal and transport, effectively reduce personnel and environmental risk, also significantly shorten emergency disposal time, reduce energy loss.The utility model has the functions of temporary storage and transport of LNG, can provide timely emergency support for LNG receiving station, gas station etc., show extremely high practical value and social significance.Further reduce energy consumption and operating cost, improve energy utilization efficiency, inject new vitality for sustainable development. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structural schematic diagram of the utility model.

[0017] Among them:

[0018] 1, vehicle-mounted LNG storage device; 2, vehicle-mounted nitrogen storage device; 3, coil device; 4, torch; 5, pump; 6, flowmeter; 7, check valve; 8, No. I valve; 9, No. II valve; 10, No. III valve; 11, No. IV valve; 12, No. V valve; 13, No. VI valve; 14, No. VII valve; 15, No. VIII valve; 16, No. IX valve; 17, No. X valve; 18, No. XI valve; 19, No. XII valve; 20, No. XIII valve; 21, No. XIV valve; 22, a flange; 23, b flange; 24, c flange; 25, d flange; 26, e flange; 27, f flange; 28, gas discharge pipeline.

[0019] For those skilled in the art, other related drawings can be obtained according to the above drawings without creative labor. DETAILED DESCRIPTION

[0020] In order for those skilled in the art to better understand the technical scheme of the utility model, the technical scheme of the utility model will be further described below by specific embodiments in conjunction with the drawings of the specification.

[0021] As Figure 1 shown, a LNG tank car mobile multifunctional high-efficiency emergency disposal integrated system, comprising a pressure relief mechanism, a liquid relief mechanism and a filling mechanism;

[0022] The pressure relief mechanism comprises a gas release pipeline 28, one end of which is connected with a torch 4, and the other end of which is connected with a tank car gas phase connection mechanism;

[0023] The tank car gas phase connection mechanism comprises an accident tank car gas phase group and a target tank car gas phase group; the accident tank car gas phase group comprises an accident tank car gas release pipeline and a No. Ⅻ valve 19 arranged on the accident tank car gas release pipeline, one end of the accident tank car gas release pipeline is in communication with the gas release pipeline 28, and the other end is provided with a d flange 25, and the gas phase pipeline of the accident tank car is connected with the d flange 25 through a hose; the target tank car gas phase group comprises a target tank car gas release pipeline and a No. XIII valve 20 arranged on the target tank car gas release pipeline, one end of the target tank car gas release pipeline is in communication with the gas release pipeline 28, and the other end is provided with an e flange 26, and the gas phase pipeline of the transfer target tank car is connected with the e flange 26 through a hose;

[0024] The torch 4 is provided with a No. X valve 17 at the gas inlet end, a coil pipe device 3 is arranged at the gas inlet end pipeline of the No. X valve 17, and part of the gas release pipeline 28 is coiled inside the coil pipe device 3, so that the length can be adjusted;

[0025] The gas release pipeline 28 between the torch 4 and the tank car gas phase connection mechanism is respectively connected with an LNG storage mechanism and a nitrogen mechanism, and the LNG storage mechanism is arranged on the side close to the torch 4; a No. VIII valve 15 is arranged on the gas release pipeline 28 between the LNG storage mechanism and the nitrogen mechanism;

[0026] The LNG storage mechanism comprises a vehicle-mounted LNG storage device 1, the outlet end of the vehicle-mounted LNG storage device 1 is connected with the gas release pipeline 28 through a pipeline, and the outlet end of the vehicle-mounted LNG storage device 1 is provided with a No. IX valve 16; the inlet end of the vehicle-mounted LNG storage device 1 is provided with a No. I valve 8;

[0027] The nitrogen mechanism comprises a nitrogen pipeline and a No. X valve 18 arranged on the nitrogen pipeline, one end of the nitrogen pipeline is in communication with the gas release pipeline 28, the other end is provided with an f flange 27, and a vehicle-mounted nitrogen storage device 2 is connected with the f flange 27.

[0028] The liquid release mechanism comprises a liquid release pipeline, an emergency tank truck liquid release pipeline group and a target tank truck liquid release pipeline;

[0029] One end of the liquid release pipeline is connected with the inlet of the vehicle-mounted LNG storage device 1, and the other end of the liquid release pipeline is connected with the gas release pipeline 28.

[0030] The emergency tank truck liquid release pipeline group comprises a pump pipeline and an LNG pipeline connected in parallel, one end of the pump pipeline and one end of the LNG pipeline are connected with the liquid release pipeline, and the other end is provided with a flange 22; a pump 5 and a No.

[0031] One end of the target tank truck liquid release pipeline is connected with the liquid release pipeline, and the other end is provided with a flange 24, and a No.

[0032] The filling mechanism comprises a filling pipeline, a one-way valve 7, a flow meter 6 and a No.

[0033] The pressure release mechanism, the liquid release mechanism and the filling mechanism are arranged on the mobile chassis, the mobile chassis can be connected with the tank truck, and the mobility of the mobile multi-functional and efficient emergency disposal integrated system for the LNG tank truck is realized.

[0034] The use method of the utility model is as follows:

[0035] (I) the specific operation of the emergency tank truck to the system pressure release is as follows:

[0036] Connect the vapor line of the accident tank truck to the d flange 25 through a hose, connect the vapor line of the transfer target tank truck B to the e flange 26 through a hose, close the valves No. 14, No. 15, No. 16, No. 19, No. 20, open the valve No. 17, connect the on-board nitrogen gas through the f flange 27, open the valve No. 18 to purge the discharge pipeline, then close it, open the valve No. 19 and the vapor line of the accident tank truck, depressurize the accident tank truck according to the rising rate of the pressure of the accident tank truck, depressurize the transfer target tank truck according to the actual needs, open the valve No. 20 and the vapor line valve of the tank truck, depressurize the on-board LNG storage device according to the actual situation, and ignite the flare 4 to discharge during the operation.

[0037] (II) The specific operation of the accident tank truck to the system rapid liquid discharge is as follows:

[0038] Connect the vapor line of the accident tank truck to the d flange 25 through a hose, connect the liquid line of the accident tank truck to the a flange 22 through a hose, close the valves No. 8, No. 11, No. 16, No. 21, No. 19, No. 20, open the valve No. 17, connect the on-board nitrogen gas storage device 2 through the f flange 27, open the valves No. 18, No. 17, No. 15, No. 14, No. 9, No. 10 to purge the discharge pipeline and the liquid discharge pipeline, then close them, open the valves No. 17, No. 16 to depressurize the on-board LNG storage device 1 to below 100 KPa and keep it, open the valves No. 8, No. 9 and the liquid line of the accident tank truck, make the LNG in the accident tank truck flow to the on-board LNG storage device 1 due to the pressure difference, and closely observe the height of the liquid level meter.

[0039] (III) The specific operation of the accident tank truck to the target tank truck transfer is as follows:

[0040] The accident tank truck gas phase pipeline is connected with the d flange 25 through a hose, the accident tank truck liquid phase pipeline is connected with the a flange 22 through a hose, the transfer target tank truck gas phase pipeline is connected with the e flange 26 through a hose, the target tank truck liquid phase pipeline is connected with the c flange 24 through a hose, the valve Ⅰ valve 8, the valve Ⅳ valve 11, the valve Ⅸ valve 16, the valve XIV valve 21 are closed, the valve X valve 17 is opened, the vehicle-mounted nitrogen storage device 2 is connected through the f flange 27, the valve Ⅺ valve 18, the valve X valve 17, the valve Ⅶ valve 14, V8, V2, V3, V12, V13, V6 are opened for purging the discharge pipeline and the liquid discharge pipeline, then the valve V13, the valve Ⅷ valve 15, the valve X valve 17 are opened for pressure relief of the target tank truck and are kept, the valve Ⅰ valve 8, the valve Ⅱ valve 9, the valve Ⅲ valve 10, the valve Ⅶ valve 14, the valve XIV valve 21 are confirmed to be closed, the valve Ⅳ valve 11, the valve Ⅴ valve 12, the valve Ⅵ valve 13, the accident tank truck liquid phase pipeline valve and the target tank truck liquid phase pipeline valve are opened, the pump 5 is started to make the LNG in the accident tank truck flow to the target tank truck quickly, and the liquid level meter and the pressure of the target tank truck are closely observed;

[0041] At the same time, the valve Ⅻ valve 19, the valve XIII valve 20, the valve Ⅷ valve 15, the valve X valve 17 are opened for pressure relief of the target tank truck and are kept, and the flare 4 is used for discharge, when the pressure overload occurs during the transfer of the accident tank truck to the target tank truck, the above valves are opened according to the pressure requirements of the accident tank truck and the target tank truck, and the flare 4 is ignited to realize the pressure relief function.

[0042] (Ⅳ) The specific operation of the vehicle-mounted LNG storage device to the target tank truck is as follows:

[0043] The valve Ⅺ valve 18, the valve Ⅶ valve 14, the valve XIV valve 21, the valve Ⅴ valve 12, the valve Ⅲ valve 10, the valve Ⅱ valve 9 are opened, and the other valves are closed, the filling pipeline and the liquid inlet pipeline are purged, then the valves are closed, the a flange 22 is blanked by a blind plate, is connected to the one-way valve 7 and the flowmeter 6 through a 3-inch pipeline, the valve Ⅰ valve 8, the valve Ⅱ valve 9, the valve Ⅴ valve 12, the valve Ⅶ valve 14, the valve Ⅷ valve 15, the valve X valve 17 are opened, all the other valves are closed, the LNG is introduced into the pump, then the valve Ⅶ valve 14, the valve Ⅷ valve 15, the valve X valve 17 are closed to prevent the LNG from flowing backward, the pump is started, the valve XIV valve 21 is opened, and the LNG in the vehicle-mounted LNG storage device 1 is loaded into the target tank truck through the flowmeter to control the LNG amount, so that the LNG filling of the target tank truck is realized.

[0044] (Ⅴ) The specific operation of the system to the accident tank truck and the target tank truck is as follows:

[0045] The accident tank truck gas phase pipeline is connected with the d flange 25 through a hose, the accident tank truck liquid phase pipeline is connected with the a flange 22 through a hose, the target tank truck gas phase pipeline is connected with the e flange 26 through a hose, the target tank truck liquid phase pipeline is connected with the c flange 24 through a hose, the XIII valve 18, the VII valve 14, the V valve 12 and the III valve 10 are opened, and the other valves are closed, the XIII valve 18 is connected with the vehicle-mounted nitrogen storage device 2 through the f flange 27, nitrogen is injected to pressurize, the valve door connected with the receiving station tank truck loading liquid phase pipeline or the target tank truck liquid phase pipeline is opened, and the vehicle-mounted LNG storage device 1 is realized to be reversely filled with LNG liquid into the receiving station interface or the target tank truck.

[0046] (VI) The vehicle-mounted LNG storage device is reversely filled into the target tank truck or the receiving station through pressure or a starting pump, and the specific operation is as follows:

[0047] (VI-1) The vehicle-mounted LNG storage device is reversely filled into the receiving station or the target tank truck:

[0048] The c flange 24 is connected with the receiving station tank truck loading liquid phase pipeline or the target tank truck liquid phase pipeline, the I valve 8, the IV valve 11, the V valve 12 and the VI valve 13 are opened, all the other valves are closed, the pump is opened, the valve door connected with the receiving station tank truck loading liquid phase pipeline or the target tank truck liquid phase pipeline is opened, and the vehicle-mounted LNG storage device is realized to be reversely filled with LNG liquid into the receiving station interface or the target tank truck.

[0049] (VI-2) The vehicle-mounted LNG storage device is reversely filled into the receiving station or the target tank truck through pressure:

[0050] The c flange 24 is connected with the receiving station tank truck loading liquid phase pipeline or the target tank truck liquid phase pipeline, the I valve 8, the III valve 10, the V valve 12 and the VI valve 13 are opened, all the other valves are closed, the IX valve 16, the VIII valve 15 and the XIII valve 18 are connected with the vehicle-mounted nitrogen storage device 2 through the f flange 27, nitrogen is injected to pressurize, the valve door connected with the receiving station tank truck loading liquid phase pipeline or the target tank truck liquid phase pipeline is opened, and the vehicle-mounted LNG storage device 1 is realized to be reversely filled with LNG liquid into the receiving station interface or the target tank truck.

[0051] When reversely filled into the target tank truck through pressure, the e flange 26 can be connected with the target tank truck gas phase pipeline through a hose, when the pressure of the target tank truck increases, the XIII valve 20, the X valve 17 and the target tank truck gas phase pipeline valve are opened to release pressure through the torch 4, and the threshold is evaluated to ignite the torch, so that the pressure relief function is realized.

[0052] In the description of the utility model, it is necessary to explain that, unless another explicit stipulation and limit, the term "installation", "link", "connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can indirectly connect through the intermediate medium, can be two elements inside the communication。For ordinary skilled person in the art, the above-mentioned terms can be understood by the specific meaning in the utility model by the specific situation.

[0053] The applicant declares that the above is only the specific implementation of the utility model, but the protection scope of the utility model is not limited to this, the skilled person in the art should understand that any change or replacement that belongs to the skilled person in the art within the technical range disclosed by the utility model can be easily thought of, which falls within the protection scope and disclosure range of the utility model.

Claims

1. A LNG tank car mobile multifunctional high-efficiency emergency disposal integrated system, characterized in that: The relief mechanism, the liquid relief mechanism and the filling mechanism are included. The relief mechanism includes a gas release pipeline (28) connected to the tank car gas phase connection mechanism at one end. The tank car gas phase connection mechanism includes an accident tank car gas phase group and a target tank car gas phase group. The accident tank car gas phase group includes an accident tank car gas release pipeline and a No. Ⅻ valve (19) arranged on the accident tank car gas release pipeline. The target tank car gas phase group includes a target tank car gas release pipeline and a No. XIII valve (20) arranged on the target tank car gas release pipeline. The LNG storage mechanism is arranged on the side away from the tank car gas phase connection mechanism. The LNG storage mechanism includes a vehicle-mounted LNG storage device (1) with an outlet end connected to the gas release pipeline (28) through a pipeline. The nitrogen gas mechanism includes a nitrogen gas pipeline and a No. XI valve (18) arranged on the nitrogen gas pipeline.

2. The LNG tank car mobile multifunctional high-efficiency emergency disposal integrated system according to claim 1, characterized in that: The liquid relief mechanism includes a liquid relief pipeline, an accident tank car liquid release pipeline group and a target tank car liquid release pipeline.

3. The LNG tank car mobile multifunctional high-efficiency emergency disposal integrated system according to claim 2, characterized in that: The filling mechanism includes a filling pipeline and a one-way valve (7), a flow meter (6) and a No. XIV valve (21) arranged in sequence on the filling pipeline.

4. The LNG tank car mobile multifunctional high-efficiency emergency disposal integrated system according to claim 1, characterized in that: The other end of the gas release pipeline (28) is connected to a flare (4).

5. The LNG tank car mobile multifunctional high-efficiency emergency disposal integrated system according to claim 1, characterized in that: The gas inlet end pipeline of the No. X valve (17) is provided with a coil device (3), and part of the gas release pipeline (28) is coiled on the coil device (3).

6. The LNG tank car mobile multifunctional high-efficiency emergency disposal integrated system according to claim 1, characterized in that: The gas phase pipeline of the accident tank car is connected to the d flange (25) through a hose. The gas phase pipeline of the target tank car is connected to the e flange (26) through a hose. The No. VIII valve (15) is arranged on the gas release pipeline (28) between the LNG storage mechanism and the nitrogen gas mechanism. One end of the liquid relief pipeline is connected to the inlet of the vehicle-mounted LNG storage device (1), and the other end of the liquid relief pipeline is connected to the gas release pipeline (28). The other end of the liquid relief pipeline is connected to the gas release pipeline (28).

7. The LNG tank car mobile multifunctional high-efficiency emergency disposal integrated system according to claim 1, characterized in that: The accident tank truck liquid discharge pipeline set comprises a pump pipeline and an LNG pipeline connected in parallel, one end of the pump pipeline and the LNG pipeline is connected with the liquid discharge pipeline, and the other end is provided with a flange (22); a pump (5) and a No. IV valve (11) are sequentially arranged on the pump pipeline; a No. II valve (9) is arranged on the LNG pipeline, and a No. III valve (10) is arranged on the liquid discharge pipeline between the connection position of the pump pipeline and the liquid discharge pipeline and the connection position of the LNG pipeline and the liquid discharge pipeline.

8. The LNG tank vehicle mobile multifunctional high-efficiency emergency disposal integrated system according to claim 1, characterized in that: One end of the target tank truck liquid discharge pipeline is connected with the liquid discharge pipeline, and the other end is provided with a flange (24), and a No. VI valve (13) is arranged on the target tank truck liquid discharge pipeline; a No. VII valve (14) is arranged on the liquid discharge pipeline between the connection position of the target tank truck liquid discharge pipeline and the liquid discharge pipeline and the connection position of the liquid discharge pipeline and a gas discharge pipeline (28).

9. The LNG tank car mobile multifunctional high-efficiency emergency disposal integrated system according to claim 1, characterized in that: The pressure relief mechanism, the liquid discharge mechanism and the filling mechanism are arranged on the mobile chassis.

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