A fire-fighting teaching device for LNG transport semi-trailer

Abstract

The present invention relates to a fire-fighting teaching device for an LNG transport semitrailer, which comprises: a tank body, inside which two partition sealing plates perpendicular to the axis of the tank body are fixedly arranged, a partition is formed between the two partition sealing plates; an operation box, fixedly arranged at the right end of the tank body, and connected with the partition through a pipeline; a mounting frame, used to support the tank body, a rotating driving mechanism for driving the tank body to rotate circumferentially is arranged between the mounting frame and the tank body; a fixing frame, which is arranged below the mounting frame, an angle adjusting device is arranged between the fixing frame and the mounting frame, and is used to adjust the front and rear tilt angles of the mounting frame and the tank body.

Description

Technical Field

[0001] The invention relates to fire-fighting teaching equipment for an LNG transport semitrailer, and specifically belongs to the technical field of fire-fighting teaching equipment. Background Art

[0002] Liquefied natural gas (LNG) is a colorless, odorless, high calorific value liquid. Its main danger lies in its flammable and explosive properties. In addition, LNG also has the dangers of boiling and rolling, low temperature frostbite, low temperature anesthesia, suffocation, cold explosion, etc. LNG tankers are special vehicles used to transport liquefied natural gas. When an LNG tanker has an accident, it needs to be handled professionally and carefully to minimize the damage. However, current firefighters are not familiar with the internal structure and operation methods of LNG tankers. When they encounter related accidents, they often do not know how to deal with them quickly and effectively, resulting in delays in the best rescue time, resulting in a series of adverse or even serious consequences.

[0003] In view of the above problems, the present invention provides a fire-fighting teaching equipment for LNG transport semi-trailer, which is designed according to the original real transport tank body. The internal and external structures are the same as the real transport tank body, and a visual window and an external lighting system are designed, so that the specific internal and external structures of the tank body can be seen. A full set of real valves, cutting devices, and safety devices are used for practical learning, realizing a 100% real experience in vision and touch. By configuring a pressurized gas cylinder and a special joint for a fire hose, rapid liquid guiding and drainage can be truly practiced; through remote control, the gas and liquid phase states of the tank body in various postures in three-dimensional space postures such as 0~360° and forward and backward tilt can be truly simulated, and full-scale emergency drills for abnormal conditions such as rollover and overturning can be carried out; accidental leakage simulation can be realized, including gas and liquid leakage simulation; a 0.1MPa booster device is provided to simulate abnormal conditions such as liquid spraying, jetting, and safety valve tripping; an operation box is provided to simulate real scenes such as operating valve opening and closing and emptying. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a fire-fighting teaching device for an LNG transport semi-trailer which can simulate various unexpected and abnormal real scenes and conduct full-scale emergency drills.

[0005] To solve the above problems, the technical solution adopted by the present invention is:

[0006] A fire fighting teaching device for an LNG transport semitrailer, comprising:

[0007] The tank body has two compartment sealing plates vertical to the axis of the tank body fixedly disposed therein, and a compartment is formed between the two compartment sealing plates;

[0008] An operation box is fixedly mounted at the right end of the tank body and is connected to the compartment through a pipeline;

[0009] A mounting frame, used to support the tank body, a rotation drive mechanism for driving the tank body to rotate circumferentially is provided between the mounting frame and the tank body;

[0010] A fixing frame is arranged below the mounting frame, and an angle adjustment device is arranged between the fixing frame and the mounting frame for adjusting the front and rear tilt angles of the mounting frame and the tank body.

[0011] As a further improvement of the present invention, the rotary drive mechanism includes an arc-shaped or annular track arranged outside the tank body, a roller arranged on the mounting frame and a drive mechanism for driving the roller to rotate, and the roller is adapted to the track.

[0012] As a further improvement of the present invention, the angle adjustment device includes a rotating rod arranged at the left and right ends of the mounting frame, the rotating rod is arranged on the mounting frame through a bearing seat, the fixed frame is provided with a support column supporting the rotating rod, the top of the support column is provided with an arc groove adapted to the rotating rod, the mounting frame and the tank body as a whole can swing back and forth around the two rotating rods as axes respectively; the angle adjustment device also includes two lifting mechanisms arranged between the fixed frame and the mounting frame, and the two lifting mechanisms are respectively located on the left and right sides of the fixed frame.

[0013] As a further improvement of the present invention, the lifting mechanism includes a worm gear lift and a servo motor 1 that drives the worm gear lift, the worm gear lift is provided with a horizontal input shaft and a vertical screw, the bottom of the worm gear lift is hinged to a worm gear lift hinge seat fixed on the fixed frame, and the upper end of the screw is hinged to the rotating rod; the servo motor 1 is hinged to the fixed frame through a servo motor hinge seat, and the output shaft of the servo motor 1 is connected to the input shaft on the worm gear lift.

[0014] As a further improvement of the present invention, the angle adjustment device includes a suspension frame arranged on the left and right sides of the middle part of the mounting frame, and the fixed frame is provided with a bracket for supporting the suspension frame. The suspension frame and the bracket are hinged together by a hinge shaft, and the mounting frame and the tank body as a whole can swing back and forth around the hinge shaft; the angle adjustment device also includes a lifting mechanism arranged between the fixed frame and the mounting frame.

[0015] As a further improvement of the present invention, the lifting mechanism includes a telescopic cylinder hingedly arranged on the fixed frame, the cylinder rod, connecting arm and supporting arm of the telescopic cylinder are hingedly connected to each other, the other end of the connecting arm is hingedly connected to the crossbeam of the mounting frame, and the other end of the supporting arm is hingedly connected to the fixed frame.

[0016] As a further improvement of the present invention, the operating box is connected to the bottom of the compartment through the liquid inlet and outlet pipelines and the boosting pipeline, and is connected to the top of the compartment through the liquid level gauge gas phase pipeline, the gas inlet and outlet pipelines, the fullness measuring pipeline and the upper liquid inlet pipe, and the operating box is provided with a special joint for a fire hose at the liquid inlet and outlet.

[0017] As a further improvement of the present invention, the operation box comprises:

[0018] A pneumatic emergency shutoff device, comprising an emergency shutoff valve and a pneumatic control system, wherein the emergency shutoff valve comprises a liquid phase emergency shutoff valve, a boost emergency shutoff valve and a gas phase emergency shutoff valve, and the pneumatic control system comprises a liquid phase emergency shutoff control valve, a boost emergency shutoff control valve and a gas phase emergency shutoff control valve, and the liquid phase emergency shutoff valve, the boost emergency shutoff valve and the gas phase emergency shutoff valve are provided with hand wheels;

[0019] An upper liquid inlet stop valve and an upper liquid inlet non-return valve, which are connected to the upper liquid inlet pipe;

[0020] A lower inlet and outlet liquid valve connected to the liquid inlet and outlet pipelines;

[0021] A supercharger outlet valve connected to the supercharging pipeline;

[0022] A gas phase valve connected to the gas phase inlet and outlet pipelines;

[0023] An inner tank vent valve, which is arranged between the gas phase inlet and outlet pipelines and the discharge pipeline;

[0024] A fullness measuring valve connected to a fullness measuring pipeline;

[0025] A liquid phase pipeline vent valve, a booster pipeline vent valve and a gas phase pipeline vent valve, all of which are connected to the discharge pipeline;

[0026] A liquid level meter, a stop valve on the upper tube of the liquid level meter, a stop valve on the lower tube of the liquid level meter, a balance valve of the liquid level meter and a pressure gauge, wherein the liquid level meter is connected to the gas phase pipeline of the liquid level meter;

[0027] A combined safety valve, which is arranged between the gas phase inlet and outlet pipelines and the discharge pipeline, comprises two parallel safety valves, and the two safety valves are connected to a three-way ball valve;

[0028] A vacuum valve, which is connected to the interlayer between the outer tank and the inner tank of the tank body;

[0029] A flame arrester is arranged on the discharge pipeline.

[0030] As a further improvement of the present invention, a visual window and an external lighting system for illuminating the interior of the tank are provided on the tank body, and an explosion mark and a reflective mark are also provided on the tank body.

[0031] As a further improvement of the present invention, a guardrail is provided on the outside of the fire fighting teaching equipment, and an infrared detection device is provided inside the guardrail for detecting the number of people inside to prevent injuries to people caused by equipment failure.

[0032] The beneficial effects of adopting the above technical solution are:

[0033] The present invention provides a fire-fighting teaching equipment for LNG transport semi-trailer, which is designed according to the original real transport tank body. The internal and external structures are the same as the real transport tank body, and a visual window and an external lighting system are designed, so that the specific internal and external structures of the tank body can be seen. A full set of real valves, cutting devices, and safety devices are used for practical learning, so that a 100% real experience in vision and touch is achieved. By configuring a booster gas cylinder and a special joint for a fire hose, the booster gas cylinder is used for pressurization during liquid guiding and liquid drainage, so that rapid liquid guiding and liquid drainage can be truly practiced; through remote control, the gas phase and liquid phase states of the tank body in various postures in three-dimensional space postures such as 0~360° and forward and backward tilt can be truly simulated, and real emergency drills for abnormal conditions such as rollover and overturning can be carried out; accidental leakage simulation can be realized, including gas phase and liquid phase leakage simulation; a 0.1MPa booster device is provided, which can simulate abnormal states such as liquid spraying, jetting, and safety valve tripping; an operation box is provided, which can simulate real scenes such as operating valve opening and closing and emptying. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a main structural schematic diagram of the present invention.

[0036] Figure 2 It is a left-side structural schematic diagram of the present invention.

[0037] Figure 3 It is a main view internal structure schematic diagram of the present invention.

[0038] Figure 4 It is a right-side structural schematic diagram of the present invention.

[0039] Figure 5 It is a structural schematic diagram of the fixing frame and the mounting frame in the present invention.

[0040] Figure 6 It is another structural schematic diagram of the fixing frame and the mounting frame in the present invention.

[0041] Figure 7 It is a structural schematic diagram of the mounting frame and the hanging frame in the present invention.

[0042] Figure 8 It is another main structural schematic diagram of the present invention.

[0043] Fig. 9 It is another left-view structural schematic diagram of the present invention.

[0044] Fig.10 It is a structural schematic diagram of the worm gear screw lift in the present invention.

[0045] Fig.11 It is a structural schematic diagram of the support column and the holder in the present invention.

[0046] Fig.12 It is a structural schematic diagram of a servo motor 1 in the present invention.

[0047] Among them: 1 tank body, 1-1 outer tank, 1-2 inner tank, 2 explosion-shaped logo, 3 reflective logo, 4 track, 5 roller, 6 support, 7 beam, 8 longitudinal beam, 9 suspension frame, 10 bracket, 11 fixed frame, 12 telescopic cylinder, 13 cylinder rod, 14 support arm, 15 connecting arm, 16 operation box, 17 compartment sealing plate, 18 liquid level gauge gas phase pipeline, 19 gas phase inlet and outlet pipeline, 20 fullness measurement pipeline, 21 upper inlet Liquid pipe, 22 liquid inlet and outlet pipeline, 23 booster pipeline, 24 coupling, 25 worm gear screw lift hinge seat, 26 worm gear screw lift, 26-1 connecting plate 1, 27 screw, 28 input shaft, 29 bearing seat, 30 rotating rod, 31 support column, 32 card seat, 33 arc groove, 34 clearance hole, 35 servo motor hinge seat, 36 servo motor 1, 36-1 connecting plate 2, 37 external lighting system, 38 visual window, 39 outer tank explosion-proof port, 40 discharge pipeline, 41 liquid phase emergency shut-off valve, 42 boost emergency shut-off valve, 43 gas phase emergency shut-off valve, 44 liquid phase emergency shut-off control valve, 45 boost emergency shut-off control valve, 46 gas phase emergency shut-off control valve, 47 hand wheel, 48 upper liquid inlet shut-off valve, 49 lower liquid inlet and outlet valves, 50 booster outlet valve, 51 gas phase valve, 52 inner tank vent valve, 53 fullness measuring valve, 54 liquid phase pipeline vent valve, 55 boost pipeline vent valve, 56 gas phase pipeline vent valve, 57 liquid level gauge upper pipe shut-off valve, 58 liquid level gauge lower pipe shut-off valve, 59 liquid level gauge balancing valve, 60 liquid level gauge, 61 pressure gauge, 62 combined safety valve, 63 three-way ball valve, 64 vacuum valve, 65 air brake device, 66 flame arrester, 67 booster gas cylinder, 68 servo motor two. DETAILED DESCRIPTION

[0048] In order to make the objectives, technical solutions and advantages of the present invention clearer, the invention is clearly and completely described below in conjunction with specific embodiments. It should be understood that the terms "center", "vertical", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0049] The tank body 1, the mounting frame and the two ends / front and back of the fixing frame 11 in this embodiment are Figure 1 For example, it refers to Figure 1 The left and right ends of the tank 1, the mounting frame and the fixing frame 11 on both sides, Figure 2 For example, it refers to Figure 2 The left and right sides of the tank body 1; the circumferential rotation of the tank body 1 refers to the rotation with the axis of the tank body 1 as the rotation axis.

[0050] like Figure 1-Figure 12 The fire fighting teaching equipment for LNG transport semi-trailer shown in the figure comprises:

[0051] The tank body 1 is cylindrical, closed at both ends, and has two partition sealing plates 17 perpendicular to the axis of the tank body 1. A partition is formed between the two partition sealing plates 17. Water or other liquids can be contained in the partition. The partition and water are used to simulate the tank body 1 and the liquid phase, which greatly reduces the weight of the tank body 1, facilitates the rollover and tilting of the tank body 1, and can realistically present the tilting state of the liquid phase. An operating box 16 is provided at the right end of the tank body 1. The operating box 16 is connected to the partition through a pipeline. The pipeline includes a liquid level gauge gas phase pipeline 18, a gas phase inlet and outlet pipeline 19, and a fullness measuring pipeline. 20, an upper liquid inlet pipe 21, a liquid phase inlet and outlet pipeline 22 and a boosting pipeline 23; the operating box 16 is connected to the bottom of the compartment through the liquid phase inlet and outlet pipeline 22 and the boosting pipeline 23, and is connected to the top of the compartment through the liquid level gauge gas phase pipeline 18, the gas phase inlet and outlet pipeline 19, the fullness measuring pipeline 20 and the upper liquid inlet pipe 21; a boosting gas cylinder 67 is also provided on the outside of the tank body 1. In this embodiment, a nitrogen cylinder is used, and the boosting gas cylinder 67 is connected to the operating box 16; in this embodiment, two arc-shaped or annular tracks 4 are fixedly provided on the outside of the tank body 1, and the two tracks 4 are located at both ends of the tank body 1.

[0052] A mounting frame is used to support the tank body 1. A rotation driving mechanism for driving the tank body 1 to rotate circumferentially is provided between the mounting frame and the tank body 1. The rotation driving mechanism includes an arc-shaped or annular track 4 arranged outside the tank body 1, a roller 5 arranged on the mounting frame, and a driving mechanism for driving the roller 5 to rotate. The roller 5 is adapted to the track 4. In this embodiment, the mounting frame is square and includes two cross beams 7 and two longitudinal beams 8. The tank body 1 is arranged above the mounting frame and parallel to the longitudinal beams 8. Two rollers 5 are arranged on each of the cross beams 7 through a support 6. The rollers 5 are located below both sides of the tank body 1 and are adapted to the track 4. The rollers 5 are connected to a driving mechanism. In this embodiment, the driving mechanism is a servo motor 2 68. The rollers 5 are connected to the output shaft of the servo motor 2 68. Anti-slip material is provided between the rollers 5 and the track 4 to prevent sliding between the rollers 5 and the track 4. Rubber can be fixed on the outside of the rollers 5. The tank body 1 is driven by the servo motor 2 68 to simulate rollover at any angle within 360°. In this embodiment, a synchronously rotating servo motor 2 68 is provided at each end of the mounting frame and is connected to the rollers 5. The track 4 is low in the middle and has edges on both sides. The rollers 5 are stuck in the track 4 to prevent sliding out of the track 4.

[0053] A fixing frame 11 is disposed below the mounting frame, and an angle adjustment device is disposed between the fixing frame 11 and the mounting frame for adjusting the front and rear tilt angles of the mounting frame and the tank body 1 .

[0054] As an embodiment, the angle adjustment device includes a rotating rod 30 arranged at the left and right ends of the mounting frame, the rotating rod 30 is arranged on the mounting frame through a bearing seat 29, and a support column 31 supporting the rotating rod 30 is arranged on the fixed frame 11, and an arc groove 33 adapted to the rotating rod 30 is arranged on the top of the support column 31. The mounting frame and the tank body 1 as a whole can swing back and forth around the two rotating rods 30 as axes respectively; the angle adjustment device also includes two lifting mechanisms arranged between the fixed frame 11 and the left and right ends of the mounting frame, and the two lifting mechanisms are respectively located on the left and right sides of the fixed frame 11. In this embodiment, the lifting mechanism includes a worm gear lift 26 and a servo motor 36 driving the worm gear lift 26. The worm gear lift 26 is provided with a horizontal input shaft 28 and a vertical screw 27. The bottom of the worm gear lift 26 is hinged to a worm gear lift hinge seat 25 fixed on the fixed frame 11, and the upper end of the screw 27 is hinged to the rotating rod 30; the servo motor 36 is hingedly arranged on the fixed frame 11 through a servo motor hinge seat 35, and the output shaft of the servo motor 36 is connected to the input shaft 28 on the worm gear lift 26.

[0055] In this embodiment, the lifting mechanism includes two worm gear screw lifts 26, and the worm gear screw lifts 26 are arranged on both sides of the end of the fixed frame 11. A connecting plate 26-1 is provided at the bottom of the worm gear screw lift 26, and the connecting plate 26-1 is hinged to the worm gear screw lift hinge seat 25 fixed on the fixed frame 11. The rotating rod 30 is arranged on the crossbeam 7 at the end of the mounting frame through a bearing seat 29; the middle part of the end of the fixed frame 11 is hinged to the connecting plate 2 36-1 fixed on the servo motor 1 36 through a servo motor hinge seat 35, and the servo motor 1 36 is a double-output shaft motor, and its two output shafts are connected to the input shafts 28 on the two worm gear screw lifts 26 at the same end of the fixed frame 11 through couplings 24 respectively; the support column 31 is fixedly arranged at both ends of the fixed frame 11, and one end is provided with two, which are located between the worm gear screw lift hinge seat 25 and the servo motor hinge seat 35, and a holder 32 is fixedly arranged on the support column 31 by bolts, and an arc groove 33 adapted to the rotating rod 30 is arranged on the top of the holder 32, and a clearance hole 34 corresponding to the output shaft of the servo motor 36 is opened on the support column 31. When adjusting the front and rear tilt angles of the mounting frame and the tank body 1, the servo motor 36 at one end of the fixing frame 11 drives the screw 27 of the worm gear screw lift 26 to rise and fall, thereby driving the mounting frame and the tank body 1 at this end to rise and fall, and the other end of the mounting frame and the tank body 1 rotates with the rotating rod 30 clamped in the arc groove 33 as the rotating axis (the servo motor 36 at this end does not work), thereby adjusting the tilt angle of the mounting frame and the tank body 1, simulating the adjustment of the tilt angle of the tank body 1, simulating the gas phase and liquid phase states of the tank body 1 in various postures, and conducting full-scale emergency drills for abnormal conditions such as rollover and overturning. The two worm gear screw lift hinge seats 25 at the same end of the fixed frame 11 coincide with the rotation axis of the hinge at the hinge of the servo motor hinge seat 35. When the inclination angle of the mounting frame and the tank body 1 is adjusted, the servo motor 36 will rotate synchronously with the worm gear screw lift 26. By setting the clearance hole 34, the output shaft of the servo motor 36 can be prevented from interfering with the support column 31.

[0056] As another embodiment, the angle adjustment device includes a suspension frame 9 arranged on the left and right sides of the middle of the mounting frame, and a bracket 10 for supporting the suspension frame 9 is arranged on the fixed frame 11. Two brackets 10 are fixed on each side of the suspension frame 9. The suspension frame 9 and the bracket 10 are hinged together by a hinge shaft, and the mounting frame and the tank body as a whole can swing back and forth around the hinge shaft. The angle adjustment device also includes a lifting mechanism arranged between the fixed frame 11 and the mounting frame, and the lifting mechanism includes a telescopic cylinder 12 hingedly arranged on the fixed frame 11, and the cylinder rod 13, connecting arm 15 and support arm 14 of the telescopic cylinder 12 are hinged together, and the other end of the connecting arm 15 is hinged to the crossbeam 7 of the mounting frame, and the other end of the support arm 14 is hinged to the fixed frame 11.

[0057] The mounting frame and the tank body 1 can rotate with the hinge axis at the hinge of the bracket 10 and the suspension frame 9 as the rotating axis. When adjusting the front and rear tilt angles of the mounting frame and the tank body 1, the telescopic cylinder 12 is telescoped to change the states of the connecting arm 15 and the supporting arm 14, and the mounting frame and the tank body 1 are driven to tilt, thereby adjusting the tilt angle of the mounting frame and the tank body 1, and performing gas phase and liquid phase states of the tank body 1 in various postures, and conducting full-scale emergency drills for abnormal conditions such as rollover and overturning.

[0058] The operation box 16 comprises:

[0059] The pneumatic emergency shutoff device comprises an emergency shutoff valve and a pneumatic control system, wherein the emergency shutoff valve comprises a liquid phase emergency shutoff valve 41, a boost emergency shutoff valve 42 and a gas phase emergency shutoff valve 43, which are respectively installed on the liquid phase inlet and outlet pipeline 22, the boost pipeline 23 and the gas phase inlet and outlet pipeline 19 in the tank body 1, and the pneumatic control system comprises a liquid phase emergency shutoff control valve 44, a boost emergency shutoff control valve 45 and a gas phase emergency shutoff control valve 46, and the liquid phase emergency shutoff valve 41, the boost emergency shutoff valve 42 and the gas phase emergency shutoff valve 43 are provided with a hand wheel 47. The emergency shutoff valve can be opened or closed by the pneumatic control system or the hand wheel 47.

[0060] The upper liquid inlet stop valve 48 and the upper liquid inlet one-way valve are connected in series and connected to the upper liquid inlet pipe 21. They are opened when the liquid is inlet and closed after the filling is completed to prevent the liquid from flowing back.

[0061] The lower inlet and outlet liquid valve 49 is connected to the liquid inlet and outlet pipeline 22, opened when loading and unloading liquid, and closed after filling or unloading liquid.

[0062] The supercharger outlet valve 50 is connected to the supercharging pipeline 23, opens when the liquid is unloaded and is closed after the supercharging is completed.

[0063] The gas phase valve 51 is connected to the gas phase inlet and outlet pipeline 19 and is used for balancing and balancing the pressure when unloading liquid.

[0064] The inner tank vent valve 52 is arranged between the gas phase inlet and outlet pipeline 19 and the discharge pipeline 40, and is used to discharge the pressure when the pressure in the tank body 1 reaches or exceeds the working pressure.

[0065] The fullness measuring valve 53 is connected to the fullness measuring pipeline 20. When the liquid level gauge 60 shows that the tank body 1 is nearly full, the fullness measuring valve 53 is opened. If liquid is discharged, it means that the tank body 1 is full and the filling should be stopped.

[0066] The liquid phase pipeline vent valve 54, the boost pipeline vent valve 55 and the gas phase pipeline vent valve 56 are all connected to the discharge pipeline 40 and are used to discharge the residual LNG and gas in the pipeline after loading and unloading.

[0067] The liquid phase pipeline safety valve and the boost pipeline safety valve are both connected to the discharge pipeline 40 to prevent the residual LNG in the pipeline from gasifying and overpressure and discharge the pressure in the pipeline.

[0068] The liquid level meter 60 and the liquid level meter upper pipe stop valve 57 , the liquid level meter lower pipe stop valve 58 , the liquid level meter balancing valve 59 and the pressure gauge 61 , wherein the liquid level meter 60 is connected to the liquid level meter gas phase pipeline 18 .

[0069] The combined safety valve 62 is arranged between the gas phase inlet and outlet pipeline 19 and the discharge pipeline 40, and includes two parallel safety valves. The two safety valves are connected to a three-way ball valve 63. When the pressure in the tank body 1 increases abnormally, the safety valve opens to release the pressure in the tank body 1. The three-way ball valve 63 is used to inspect and repair the safety valve.

[0070] The vacuum valve 64 is connected to the interlayer between the outer tank 1-1 and the inner tank 1-2.

[0071] The flame arrester 66 is arranged on the discharge pipeline 40 to block the flame from entering the tank body 1 through the discharge pipeline 40 when the tank truck is at a fire scene.

[0072] The air brake device 65 can be started when the vehicle is finished loading and unloading liquid and the box door is closed and the vehicle brake state is contacted.

[0073] The vacuum isolation valve and vacuum gauge are used to measure the vacuum degree in the interlayer during the annual inspection of the tank truck. It is strictly forbidden to open them at other times.

[0074] In this embodiment, the tank body 1 includes an outer tank 1-1 and an inner tank 1-2 fixed together. The inner tank 1-2 is made of all stainless steel and is wrapped with multiple layers of insulation material. The insulation material is a composite of aluminum foil and insulation paper. The outer tank 1-1 is provided with an outer tank explosion-proof port 39 at the right end. The tank body 1 has the same diameter as the real transport tank body and a shorter length than the real transport tank body. The real transport tank body is cut and sealed. All structures in the real transport tank body are provided in the tank body 1, but the longitudinal intervals are spaced to perform corresponding space compression. The tank body 1 is provided with a number of wave-breaking plates. The left end of the tank body 1 is provided with a visual window 38 and an external lighting system 37 for illuminating the interior of the tank body 1. The tank body 1 is also provided with an explosion mark 2 and a reflective mark 3. The different-purpose pipelines in the tank body 1 and the operating box 16 are painted with different colors. It is designed according to the original real transport tank, and the internal and external structures are the same as the real transport tank. It is designed with a visual window 38 and an external lighting system 37, so that the specific internal and external structures of the tank 1 can be seen. It uses a full set of real valves, cut-off devices, and safety devices for practical learning. It can simulate the real scenes of operating valves opening and closing, emptying, etc., and achieve a 100% real experience in vision and touch. The inlet and outlet of the operating box 16 are equipped with special joints for fire hoses. By configuring a booster gas cylinder 67 and a special joint for fire hoses, the booster gas cylinder 67 is used to increase the pressure when guiding and discharging liquid. The fire truck is equipped with a special joint for fire hoses, which speeds up the speed of guiding and discharging liquid, and can actually practice rapid guiding and discharging liquid. When guiding and draining liquid, it is carried out according to the flip angle of the tank body 1. When the flip angle of the tank body 1 is less than 90°, the liquid is discharged through the liquid phase inlet and outlet pipeline 22, and is quickly discharged from the liquid inlet and outlet of the operation box 16 through a fire hose; when the flip angle of the tank body 1 is greater than 90°, the upper liquid inlet pipe 21 or the gas inlet and outlet pipeline 19 is selected to drain the liquid according to the situation, and is quickly discharged from the liquid inlet and outlet or the gas inlet and outlet of the operation box 16 through a fire hose.

[0075] The servo motor 1 36 and the servo motor 2 68 are electrically connected to the controller respectively, and through remote control, the gas phase and liquid phase states of the tank in various postures of the tank in three-dimensional space postures such as 0~360° and forward tilt and backward tilt are realistically simulated, and full emergency drills for abnormal conditions such as rollover and overturning can be carried out. Accidental leakage simulation can also be realized, including gas phase and liquid phase leakage simulation, etc. The gas phase pipeline 18, gas phase inlet and outlet pipeline 19, fullness measurement pipeline 20, upper liquid inlet pipe 21, liquid phase inlet and outlet pipeline 22 and boosting pipeline 23 of the liquid level gauge are provided with branch pipelines and valves are provided on the branch pipelines. By controlling the opening of the valves, gas phase and liquid phase leakage simulation can be realized; the boosting gas cylinder 67 is connected to the gas phase inlet and outlet in the operating box 16, and a 0.1MPa boosting device is provided to make the The air pressure in the compartment is 0.1MPa, which can simulate abnormal conditions such as liquid spraying, gas jetting, and safety valve tripping. Liquid spraying and gas jetting are achieved by controlling the opening of valves on the liquid level gauge gas phase pipeline 18, gas phase inlet and outlet pipeline 19, fullness measuring pipeline 20, upper liquid inlet pipe 21, liquid phase inlet and outlet pipeline 22 and boosting pipeline 23. The safety valve tripping requires that the safety valve tripping pressure be set in advance to be lower than 0.1MPa. When the applied pressure is 0.1MPa, the safety valve automatically trips.

[0076] In addition, an electric control operation box is also provided on the outside of the tank body 1. An electrostatic conductive grounding belt is provided at the bottom of the tank body 1, which is in contact with the ground to conduct static electricity generated at any time. A guardrail is provided on the outside of the fire fighting teaching equipment, and an infrared detection device is provided inside the guardrail to detect the number of people inside to prevent injuries caused by equipment failure.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fire-fighting teaching device for LNG transport semi-trailer, characterized in that: It includes: The tank body (1) has two compartment sealing plates (17) fixedly disposed therein and perpendicular to the axis of the tank body (1), with a compartment formed between the two compartment sealing plates (17); An operating box (16) is fixedly mounted on the right end of the tank body (1) and is connected to the compartment via a pipeline; A mounting frame, used for supporting the tank body (1), wherein a rotation driving mechanism for driving the tank body (1) to rotate in a circumferential direction is provided between the mounting frame and the tank body (1); the rotation driving mechanism comprises an arc-shaped or annular track (4) arranged outside the tank body (1), a roller (5) arranged on the mounting frame, and a driving mechanism for driving the roller (5) to rotate, wherein the roller (5) is adapted to the track (4); A fixing frame (11) is arranged below the mounting frame, and an angle adjustment device is arranged between the fixing frame (11) and the mounting frame, for adjusting the front and rear tilt angles of the mounting frame and the tank body (1); The angle adjustment device comprises rotating rods (30) arranged at the left and right ends of the mounting frame, the rotating rod (30) being arranged on the mounting frame via a bearing seat (29), the fixed frame (11) being provided with a support column (31) supporting the rotating rod (30), the top of the support column (31) being provided with an arc-shaped groove (33) adapted to the rotating rod (30), the mounting frame and the tank body (1) as a whole being able to swing forward and backward around the two rotating rods (30) as axes; the angle adjustment device further comprises two lifting mechanisms arranged between the fixed frame (11) and the mounting frame, the two lifting mechanisms being respectively located on the left and right sides of the fixed frame (11); the lifting mechanisms comprise A worm gear screw lift (26) and a servo motor (36) for driving the worm gear screw lift (26), wherein the worm gear screw lift (26) is provided with a horizontal input shaft (28) and a vertical screw (27), the bottom of the worm gear screw lift (26) is hinged to a worm gear screw lift hinge seat (25) fixed on the fixed frame (11), and the upper end of the screw (27) is hinged to the rotating rod (30); the servo motor (36) is hinged to the fixed frame (11) through the servo motor hinge seat (35), and the output shaft of the servo motor (36) is connected to the input shaft (28) on the worm gear screw lift (26); or, The angle adjustment device comprises a suspension frame (9) arranged on the left and right sides of the middle of the mounting frame, a bracket (10) for supporting the suspension frame (9) is arranged on the fixed frame (11), the suspension frame (9) and the bracket (10) are hinged together through a hinge shaft, and the mounting frame and the tank body (1) as a whole can swing forward and backward around the hinge shaft; the angle adjustment device also comprises a lifting mechanism arranged between the fixed frame (11) and the mounting frame; the lifting mechanism comprises a telescopic cylinder (12) hingedly arranged on the fixed frame (11), the cylinder rod (13), the connecting arm (15) and the supporting arm (14) of the telescopic cylinder (12) are hinged together, the other end of the connecting arm (15) is hingedly connected to the crossbeam (7) of the mounting frame, and the other end of the supporting arm (14) is hingedly connected to the fixed frame (11).

2. The fire fighting teaching equipment for LNG transport semi-trailer according to claim 1 is characterized in that: The operation box (16) is connected to the bottom of the compartment via a liquid phase inlet and outlet pipeline (22) and a pressurizing pipeline (23), and is connected to the top of the compartment via a liquid level gauge gas phase pipeline (18), a gas phase inlet and outlet pipeline (19), a fullness measuring pipeline (20) and an upper liquid inlet pipe (21). A special joint for a fire hose is provided at the liquid inlet and outlet of the operation box (16).

3. The fire fighting teaching equipment for LNG transport semi-trailer according to claim 2 is characterized in that: The operation box (16) comprises: A pneumatic emergency shutoff device, comprising an emergency shutoff valve and a pneumatic control system, wherein the emergency shutoff valve comprises a liquid phase emergency shutoff valve (41), a booster emergency shutoff valve (42) and a gas phase emergency shutoff valve (43), and the pneumatic control system comprises a liquid phase emergency shutoff control valve (44), a booster emergency shutoff control valve (45) and a gas phase emergency shutoff control valve (46), and the liquid phase emergency shutoff valve (41), the booster emergency shutoff valve (42) and the gas phase emergency shutoff valve (43) are provided with a hand wheel (47); an upper liquid inlet stop valve (48) and an upper liquid inlet non-return valve, which are connected to the upper liquid inlet pipe (21); A lower liquid inlet and outlet valve (49) connected to the liquid inlet and outlet pipeline (22); A supercharger outlet valve (50) connected to the supercharging pipeline (23); A gas phase valve (51) connected to the gas phase inlet and outlet pipeline (19); An inner tank vent valve (52) disposed between the gas phase inlet and outlet pipeline (19) and the discharge pipeline (40); A fullness measuring valve (53) connected to the fullness measuring pipeline (20); A liquid phase pipeline vent valve (54), a boost pipeline vent valve (55) and a gas phase pipeline vent valve (56), all of which are connected to the discharge pipeline (40); A liquid level meter (60), a liquid level meter upper pipe stop valve (57), a liquid level meter lower pipe stop valve (58), a liquid level meter balancing valve (59), and a pressure gauge (61), wherein the liquid level meter (60) is connected to the liquid level meter gas phase pipeline (18); A combined safety valve (62) is provided between the gas phase inlet and outlet pipeline (19) and the discharge pipeline (40), comprising two safety valves connected in parallel, wherein the two safety valves are connected to a three-way ball valve (63); A vacuum valve (64) connected to the interlayer between the outer tank (1-1) and the inner tank (1-2) of the tank body (1); A flame arrester (66) is arranged on the discharge pipeline (40).

4. The fire fighting teaching equipment for LNG transport semi-trailer according to claim 1 is characterized in that: The tank body (1) is provided with a visual window (38) and an external lighting system (37) for illuminating the interior of the tank body (1). The tank body (1) is also provided with an explosive mark (2) and a reflective mark (3).

5. The fire fighting teaching equipment for LNG transport semi-trailer according to claim 1 is characterized in that: A guardrail is arranged outside the fire fighting teaching equipment, and an infrared detection device is arranged inside the guardrail for detecting the number of people inside to prevent injuries to people caused by equipment failure.

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