A highly efficient zero-leakage replacement and drying device for helium tube bundle vehicles

Abstract

The invention relates to the technical field of helium storage and loading and unloading, and discloses a high-efficiency helium tube bundle vehicle zero-leakage replacement and drying device, comprising a drying and replacement mechanism, wherein the drying and replacement mechanism comprises a first pair of joints, a second pair of joints, a third pair of joints, a seventh solenoid valve, an eighth solenoid valve, a pipeline pressure detection component and a dry gas output component, and by selectively opening and closing the seventh solenoid valve and the eighth solenoid valve, a first tube bundle vehicle bottle and a second tube bundle vehicle bottle can continuously supply gas to gas-using equipment, thereby ensuring the continuity of gas supply, and when the helium in the first tube bundle vehicle bottle or the second tube bundle vehicle bottle is emptied, by starting the dry gas output component, dry gas can be injected into the exhausted first tube bundle vehicle bottle or the second tube bundle vehicle bottle, thereby purging the exhausted first tube bundle vehicle bottle or the second tube bundle vehicle bottle.

Description

Technical Field

[0001] The invention relates to the technical field of helium storage and loading and unloading, and in particular to a high-efficiency zero-leakage replacement and drying device for a helium tube bundle vehicle. Background Art

[0002] Oxygen, nitrogen, argon, helium, hydrogen, carbon dioxide and other gases have become an indispensable and important part of industrial production. At present, these gases are generally prepared by chemical reactions or air separation. Due to the increasing usage of these gases, the preparation or separation of these gases has become a specialized industry. The industrialization of gas separation enables gas users to devote more manpower, material and financial resources to the research of core technologies, while gas separation companies focus on improving gas quality and providing gas users with gases that meet their requirements.

[0003] At present, there are generally two methods for large-scale gas supply. One is pipeline gas supply. After the gas supplier prepares or separates the gas, it is connected through a pipeline to transport the gas to the gas user. However, this method is limited to places close to the gas user. Once the distance is too far, the cost of pipeline erection or maintenance is too high. In addition, the gas user must be stable. Once the gas user changes, the pipeline may lose its function and be abandoned. Another gas supply method is to pressurize the gas into a tube bundle vehicle (or other gas storage equipment), transport the compressed gas to the gas user, and supply it to the gas user after decompression. This method is suitable for situations where the gas user is far away and has greater flexibility.

[0004] At present, gas is generally supplied to gas-consuming equipment through a tube bundle truck. However, when the internal gas of the tube bundle truck is insufficient, the continuity of gas consumption cannot be guaranteed. At the same time, after the tube bundle truck is emptied of the transported gas, there is a certain amount of water vapor in it, which will affect the purity of the loaded gas.

[0005] The prior art discloses a hydrogen unloading system. The hydrogen unloading system includes: a first tube bundle vehicle connecting branch, a main unloading road, an auxiliary unloading road, a first channel, a second channel, a first valve, and a second valve; a high-pressure compressor is provided in the main unloading road; a low-pressure compressor is provided in the auxiliary unloading road, and one end of the auxiliary unloading road downstream of the low-pressure compressor is connected to the air inlet of the high-pressure compressor; the first channel connects the first tube bundle vehicle connecting branch with the end of the main unloading road upstream of the high-pressure compressor; the second channel connects the first tube bundle vehicle connecting branch with the end of the auxiliary unloading road upstream of the low-pressure compressor; the first valve is provided in the main unloading road or the first channel; the second valve is provided in the auxiliary unloading road or the second channel; and also includes a control unit, which is controlled and connected with the first and second valves. When the pressure of the tube bundle vehicle drops below 7.5Mpa, the hydrogen first enters the low-pressure compressor and is pressurized to a certain degree before entering the high-pressure compressor, thereby greatly improving the utilization rate of hydrogen. The prior art has the problem that it is unable to dry the emptied first tube bundle car and the second tube bundle car, which causes the water vapor generated therein to affect the purity of the subsequent filling gas. Summary of the invention

[0006] The purpose of the present invention is to provide a highly efficient helium tube bundle car zero leakage replacement and drying device to achieve the drying of the first tube bundle car bottle and the second tube bundle car bottle.

[0007] In order to achieve the above-mentioned purpose, the present invention provides a high-efficiency helium tube bundle vehicle zero-leakage replacement and drying device, comprising a first pair of joints, a second pair of joints, a third pair of joints, a seventh solenoid valve, an eighth solenoid valve, a pipeline pressure detection assembly and a dry gas output assembly, the first pair of joints are connected to the first tube bundle vehicle bottle, the second pair of joints are connected to the second tube bundle vehicle bottle, the third pair of joints and the first pair of joints are connected to form a first main pipeline, the third pair of joints and the second pair of joints are connected to form a second main pipeline, the seventh solenoid valve is arranged on the first main pipeline, the eighth solenoid valve is arranged on the second main pipeline, the pipeline pressure detection assembly is arranged on the first main pipeline and the second main pipeline, and the output port of the dry gas output assembly is connected to the first main pipeline and the second main pipeline.

[0008] Preferably, it also includes a helium recovery component, which includes a vacuum pump, a first solenoid valve, a second solenoid valve, a third solenoid valve and a helium recovery bottle, the vacuum pump's exhaust port is connected to the first pair of joints and the second pair of joints through a pipeline, the first solenoid valve is arranged on the connecting pipeline between the vacuum pump and the first pair of joints, the second solenoid valve is arranged on the connecting pipeline between the vacuum pump and the second pair of joints, the vacuum pump's exhaust port is connected to the helium recovery bottle through a pipeline, and the third solenoid valve is arranged on the connecting pipeline between the vacuum pump and the helium recovery bottle.

[0009] Preferably, it also includes a waste gas recovery component, which includes a waste gas recovery bottle and a fourth solenoid valve. The waste gas recovery bottle is connected to the exhaust port of the vacuum pump, and the fourth solenoid valve is arranged on the connecting pipeline between the vacuum pump and the waste gas recovery bottle.

[0010] Preferably, the dry gas output assembly includes a clean gas storage bottle, a gas dryer, a fifth solenoid valve and a sixth solenoid valve, the air inlet of the gas dryer is connected to the clean gas storage bottle through a pipeline, the air outlet of the gas dryer is connected to the first main pipeline to form a first branch pipeline, the air outlet of the gas dryer is connected to the second main pipeline to form a second branch pipeline, the fifth solenoid valve is arranged on the first branch pipeline, and the sixth solenoid valve is arranged on the second branch pipeline.

[0011] Preferably, the pipeline pressure detection component includes an on-site pressure gauge and a remote pressure sensor, the on-site pressure gauge and the remote pressure sensor are arranged on the first main line and the second main line, and the output end of the remote pressure sensor is communicatively connected with the signal input end of the central control room.

[0012] Preferably, two excess flow switches are further included, and the two excess flow switches are respectively arranged on the first main pipe and the second main pipe.

[0013] Preferably, it also includes a pressure regulating valve, which is arranged on the connecting pipeline between the seventh solenoid valve and the third pair of joints, and the eighth solenoid valve and the third pair of joints.

[0014] Preferably, it further comprises a particle filter, and the particle filter is arranged on the connecting pipeline between the pressure regulating valve and the seventh solenoid valve and the eighth solenoid valve.

[0015] Preferably, it also includes a mobile cart, a self-propelled leak detection cart and a connecting component, the drying and replacement mechanism is arranged on the mobile cart, and the connecting component includes a docking frame, a light rod, a first sliding frame, a second sliding frame, a bidirectional motor, a first screw rod and a second screw rod, the docking frame is arranged at the bottom end of the mobile cart, and the docking frame is provided with inclined surfaces on both sides along the width direction of the mobile cart, the light rod is arranged on both sides of the self-propelled leak detection cart along its length direction, the light rod extends along the width direction of the self-propelled leak detection cart, the first sliding frame and the second sliding frame are slidably arranged on the light rod towards or away from each other, the first sliding frame is provided with a first clamping block on the top end of the side surface facing the second sliding frame, and the second sliding frame is provided with a second clamping block on the top end of the side surface facing the first sliding frame, the bidirectional motor is arranged between the first sliding frame and the second sliding frame, and the two ends of the bidirectional motor respectively have a first output shaft facing the first sliding frame and a second output shaft facing the second sliding frame, the first screw rod is coaxially connected to the first output shaft and connected to the first sliding frame, and the second screw rod is coaxially connected to the second output shaft and connected to the second sliding frame.

[0016] Preferably, the self-propelled leak detection vehicle includes a self-propelled vehicle body, a lifting plate, a scissor-type lifting frame, a pump-suction type fixedly installed argon gas detector, a first swing tube, a second swing tube, a first worm gear, a second worm gear, a worm and a single-axis motor, the lifting plate is arranged on the top of the self-propelled vehicle body in the horizontal direction, the scissor-type lifting frame is arranged between the self-propelled vehicle body and the lifting plate, the pump-suction type fixedly installed argon gas detector is arranged on the lifting plate, the top and bottom ends of one side of the lifting plate are respectively provided with a first rotating seat and a second rotating seat, one end of the first swing tube is rotatably arranged on the first rotating seat through a first pivot, and the second swing tube One end is rotatably arranged on the second rotating seat through a second pivot, the first swing tube and the second swing tube are provided with air capture ports, the first swing tube and the second swing tube are connected with the air inlet of the pump-suction fixedly installed argon gas detector through a pipeline, the first worm gear is coaxially fixedly arranged on the first pivot, the second worm gear is coaxially fixedly arranged on the second pivot, the worm is rotatably arranged between the first worm gear and the second worm gear along the tangential direction of the first worm gear, the worm is meshed with the first worm gear and the second worm gear, the single-axis motor is arranged on the lifting plate, and the output shaft of the single-axis motor is coaxially connected to the worm.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] By selectively opening and closing the seventh solenoid valve and the eighth solenoid valve, the first tube bundle car bottle and the second tube bundle car bottle can continuously supply gas to the gas-consuming equipment, thereby ensuring the continuity of gas supply, and when the helium in the first tube bundle car bottle or the second tube bundle car bottle is emptied, by starting the dry gas output component, dry gas can be injected into the exhausted first tube bundle car bottle or the second tube bundle car bottle to purge it. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 2 is a schematic structural diagram of a zero-leakage replacement and drying device for a high-efficiency helium tube bundle vehicle according to an embodiment of the present invention;

[0020] Figure 2 It is a three-dimensional schematic diagram of a zero-leakage replacement and drying device for a high-efficiency helium tube bundle vehicle according to an embodiment of the present invention;

[0021] Figure 3 is a top view of a zero-leakage replacement and drying device for a high-efficiency helium tube bundle vehicle according to an embodiment of the present invention;

[0022] Figure 4 2 is a side view of a zero-leakage replacement and drying device for a high-efficiency helium tube bundle vehicle according to an embodiment of the present invention;

[0023] Figure 5 It is a three-dimensional diagram of a self-propelled leak detection vehicle of a zero-leakage replacement and drying device of a high-efficiency helium tube bundle vehicle according to an embodiment of the present invention;

[0024] Figure 6 It is a partial three-dimensional schematic diagram of a self-propelled leak detection vehicle of a zero-leakage replacement and drying device of a high-efficiency helium tube bundle vehicle according to an embodiment of the present invention;

[0025] Figure 7 Schematic diagram of the first swing tube and the second swing tube of the zero-leakage replacement and drying device of the high-efficiency helium tube bundle vehicle in the embodiment of the present invention being close to the lifting plate;

[0026] Figure 8 It is a stereoscopic diagram of the connection components of the zero-leakage replacement and drying device of the high-efficiency helium tube bundle vehicle according to an embodiment of the present invention;

[0027] Fig. 9 It is a schematic diagram of a self-propelled leak detection vehicle of a zero-leakage replacement and drying device for a high-efficiency helium tube bundle vehicle according to an embodiment of the present invention being separated from a mobile cart;

[0028] Fig.10 It is a schematic diagram of a self-propelled leak detection vehicle of a zero-leakage replacement and drying device of a high-efficiency helium tube bundle vehicle according to an embodiment of the present invention attached to the bottom of a mobile cart.

[0029] In the figure, 11, the first tube bundle car bottle; 111, the first gate valve; 12, the second tube bundle car bottle; 121, the second gate valve; 21, the helium recovery bottle; 22, the waste gas recovery bottle; 23, the clean gas storage bottle; 31, the first solenoid valve; 32, the second solenoid valve; 33, the third solenoid valve; 34, the fourth solenoid valve; 35, the fifth solenoid valve; 36, the sixth solenoid valve; 37, the seventh solenoid valve; 38, the eighth solenoid valve; 39, the pressure regulating valve; 41, the vacuum pump; 42, the gas dryer; 43, the particle filter; 51, the on-site pressure gauge; 52, the remote pressure sensor; 53, the over-flow switch; 61, the first pair of connectors; 62, the first Two pairs of joints; 63, the third pair of joints; 7, mobile cart; 8, self-propelled leak detection vehicle; 81, self-propelled vehicle body; 82, lifting plate; 821, the first rotating seat; 822, the second rotating seat; 83, scissor-type lifting frame; 84, pump-suction fixed installation argon gas detection instrument; 851, the first swing tube; 852, the second swing tube; 861, the first worm gear; 862, the second worm gear; 87, the worm; 88, the single-axis motor; 91, the docking frame; 92, the light rod; 93, the first sliding frame; 931, the first clamping block; 94, the second sliding frame; 941, the second clamping block; 95, the bidirectional motor; 96, the first screw rod; 97, the second screw rod. DETAILED DESCRIPTION

[0030] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0034] Embodiment 1

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, a high-efficiency helium tube bundle vehicle zero-leakage replacement and drying device according to a preferred embodiment of the present invention comprises a first pair of joints 61, a second pair of joints 62, a third pair of joints 63, a seventh solenoid valve 37, an eighth solenoid valve 38, a pipeline pressure detection assembly and a dry gas output assembly, wherein the first pair of joints 61 is connected to the first tube bundle vehicle bottle 11, the second pair of joints 62 is connected to the second tube bundle vehicle bottle 12, the third pair of joints 63 is connected to the first pair of joints 61 to form a first main pipeline, the third pair of joints 63 and the second pair of joints 62 are connected to form a second main pipeline, the seventh solenoid valve 37 is arranged on the first main pipeline, the eighth solenoid valve 38 is arranged on the second main pipeline, the pipeline pressure detection assembly is arranged on the first main pipeline and the second main pipeline, and the output port of the dry gas output assembly is connected to the first main pipeline and the second main pipeline.

[0036] The first tube bundle car bottle 11 has a first gate valve 111 which can communicate with the first butt joint 61 , and the second tube bundle car bottle 12 has a second gate valve 121 which can communicate with the second butt joint 62 .

[0037] When in use, the first pair of joints 61 is connected to the first gate valve 111, and the second pair of joints 62 is connected to the second gate valve 121. When the third pair of joints 63 is connected to the gas-using equipment, when initially supplying gas to the gas-using equipment, the second gate valve 121 and the eighth solenoid valve 38 are closed, and the first gate valve 111 and the seventh solenoid valve 37 are opened, so that the helium in the first tube bundle vehicle bottle 11 can be supplied to the gas-using equipment through the first main pipeline. At the same time, the pipeline pressure detection component located on the first main pipeline can monitor the pressure of the first main pipeline in real time. When the pressure of the first main pipeline decreases, the pressure of the first main pipeline decreases. When the helium in the first tube bundle car bottle 11 is exhausted, to ensure the continuity of gas supply, the first gate valve 111 and the seventh solenoid valve 37 are closed, and the second gate valve 121 and the eighth solenoid valve 38 are opened, so that the helium in the second tube bundle car bottle 12 can be supplied to the gas-consuming equipment through the second main pipeline, so as to ensure the continuity of gas supply. In order to dry the emptied first tube bundle car bottle 11, the first gate valve 111 is opened, and the dry gas output component is started, so that the dry gas output component can inject dry gas into the first tube bundle car bottle 11 to dry it.

[0038] After the first tube bundle bottle 11 is purged, the first connector 61 and the first gate valve 111 can be separated, and the first tube bundle bottle can be transported back to the warehouse for inflation.

[0039] In this embodiment, by selectively opening and closing the seventh solenoid valve 37 and the eighth solenoid valve 38, the first tube bundle car bottle 11 and the second tube bundle car bottle 12 can continuously supply gas to the gas-consuming equipment, thereby ensuring the continuity of gas supply, and when the helium in the first tube bundle car bottle 11 or the second tube bundle car bottle 12 is exhausted, by starting the dry gas output component, dry gas can be injected into the exhausted first tube bundle car bottle 11 or the second tube bundle car bottle 12 to purge it.

[0040] Embodiment 2

[0041] like Figure 1 , Figure 2 and Figure 3 As shown, it also includes a helium recovery component, which includes a vacuum pump 41, a first solenoid valve 31, a second solenoid valve 32, a third solenoid valve 33 and a helium recovery bottle 21. The vacuum pump 41 has an exhaust port connected to the first pair of joints 61 and the second pair of joints 62 through a pipeline. The first solenoid valve 31 is arranged on the connecting pipeline between the vacuum pump 41 and the first pair of joints 61, the second solenoid valve 32 is arranged on the connecting pipeline between the vacuum pump 41 and the second pair of joints 62, the exhaust port of the vacuum pump 41 is connected to the helium recovery bottle 21 through a pipeline, and the third solenoid valve 33 is arranged on the connecting pipeline between the vacuum pump 41 and the helium recovery bottle 21.

[0042] When the first tube bundle car bottle 11 or the second tube bundle car bottle 12 is exhausted, there is still a certain amount of helium therein. In order to save helium, it is necessary to recover the helium remaining in the first tube bundle car bottle 11 or the second tube bundle car bottle 12. When the first tube bundle car bottle 11 stops supplying gas and the second tube bundle car bottle 12 starts supplying gas, the second solenoid valve 32 is closed, the first solenoid valve 31 and the third solenoid valve 33 are opened, and the vacuum pump 41 is started, so that the helium remaining in the first tube bundle car bottle 11 can be pumped into the helium recovery bottle 21; when the first tube bundle car bottle 11 starts supplying gas and the second tube bundle car bottle 12 stops supplying gas, the first solenoid valve 31 is closed, the second solenoid valve 32 and the third solenoid valve 33 are opened, and the vacuum pump 41 is started, so that the helium remaining in the second tube bundle car bottle 12 can be pumped into the helium recovery bottle 21.

[0043] like Figure 1 As shown, it also includes a waste gas recovery component, which includes a waste gas recovery bottle 22 and a fourth solenoid valve 34. The waste gas recovery bottle 22 is connected to the exhaust port of the vacuum pump 41, and the fourth solenoid valve 34 is arranged on the connecting pipeline between the vacuum pump 41 and the waste gas recovery bottle 22.

[0044] After the dry gas is injected into the first tube bundle car bottle 11 or the second tube bundle car bottle 12 through the dry gas output component, the dry gas needs to be extracted. When the dry gas in the first tube bundle car bottle 11 needs to be extracted, the second solenoid valve 32 and the third solenoid valve 33 are closed, the first solenoid valve 31 and the fourth solenoid valve 34 are opened, and the vacuum pump 41 is started, so that the dry gas in the first tube bundle car bottle 11 can be extracted into the waste gas recovery bottle 22; when the dry gas in the second tube bundle car bottle 12 needs to be extracted, the first solenoid valve 31 and the third solenoid valve 33 are closed, the second solenoid valve 32 and the fourth solenoid valve 34 are opened, and the vacuum pump 41 is started, so that the dry gas in the second tube bundle car bottle 12 can be extracted into the waste gas recovery bottle 22.

[0045] Embodiment 3

[0046] like Figure 1 As shown, the dry gas output assembly includes a clean gas storage bottle 23, a gas dryer 42, a fifth solenoid valve 35 and a sixth solenoid valve 36. The air inlet of the gas dryer 42 is connected to the clean gas storage bottle 23 through a pipeline, the air outlet of the gas dryer 42 is connected to the first main pipeline to form a first branch pipeline, the air outlet of the gas dryer 42 is connected to the second main pipeline to form a second branch pipeline, the fifth solenoid valve 35 is arranged on the first branch pipeline, and the sixth solenoid valve 36 is arranged on the second branch pipeline.

[0047] When it is necessary to inject dry gas into the first tube bundle car bottle 11, the sixth solenoid valve 36 is closed and the fifth solenoid valve 35 is opened. The argon gas in the clean gas storage bottle 23 enters the first main line after being dried by the gas dryer 42. Since the seventh solenoid valve 37 is closed, the argon gas enters the first tube bundle car bottle 11 through the first butt joint 61 and the first gate valve 111; when it is necessary to inject dry gas into the second tube bundle car bottle 12, the fifth solenoid valve 35 is closed and the sixth solenoid valve 36 is opened. The argon gas in the clean gas storage bottle 23 enters the second main line after being dried by the gas dryer 42. Since the eighth solenoid valve 38 is closed, the argon gas enters the second tube bundle car bottle 12 through the second butt joint 62 and the second gate valve 121.

[0048] like Figure 1 As shown, the pipeline pressure detection component includes a field pressure gauge 51 and a remote pressure sensor 52, which are arranged on the first main pipe and the second main pipe, and the output end of the remote pressure sensor 52 is communicatively connected with the signal input end of the central control room.

[0049] The on-site pressure gauge 51 allows on-site staff to grasp the pressure conditions of the first main line and the second main line in real time, while the remote pressure sensor 52 allows staff in the central control room to grasp the pressure conditions of the first main line and the second main line in real time.

[0050] Embodiment 4

[0051] like Figure 1 As shown, this embodiment further includes two excess flow switches 53, and the two excess flow switches 53 are respectively arranged on the first main pipe and the second main pipe.

[0052] By providing an over-flow switch 53 on the first main pipe and the second main pipe, an automatic alarm can be given when the flow exceeds a set value to prevent excessive gas supply.

[0053] like Figure 1 As shown, this embodiment further includes a pressure regulating valve 39 , which is disposed on the connecting pipelines between the seventh solenoid valve 37 and the third pair of joints 63 , and between the eighth solenoid valve 38 and the third pair of joints 63 .

[0054] The pressure of the helium gas output from the first tube bundle car bottle 11 or the second tube bundle car bottle 12 can be reduced to a desired pressure by the pressure regulating valve 39 .

[0055] like Figure 1 As shown, this embodiment further includes a particle filter 43 , and the particle filter 43 is disposed on the connecting pipeline between the pressure regulating valve 39 and the seventh solenoid valve 37 and the eighth solenoid valve 38 .

[0056] The particle filter 43 can effectively prevent particles from entering the pressure regulating valve 39 , thereby avoiding malfunction of the pressure regulating valve 39 .

[0057] like Figure 4 , Figure 5 , Figure 8 , Fig. 9 and Fig.10As shown, this embodiment also includes a mobile cart 7, a self-propelled leak detection cart 8 and a connecting assembly. The drying and replacement mechanism is arranged on the mobile cart 7. The connecting assembly includes a docking frame 91, a light rod 92, a first sliding frame 93, a second sliding frame 94, a bidirectional motor 95, a first screw rod 96 and a second screw rod 97. The docking frame 91 is arranged at the bottom end of the mobile cart 7. The docking frame 91 is provided with inclined surfaces on both sides of the width direction of the mobile cart 7. The light rod 92 is arranged on both sides of the self-propelled leak detection cart 8 along its length direction. The light rod 92 extends along the width direction of the self-propelled leak detection cart 8. The first sliding frame 93 and the second sliding frame 94 face each other or face away from each other. It is slidably arranged on the light rod 92, a first clamping block 931 is arranged on the top end of the side of the first sliding frame 93 facing the second sliding frame 94, a second clamping block 941 is arranged on the top end of the side of the second sliding frame 94 facing the first sliding frame 93, a bidirectional motor 95 is arranged between the first sliding frame 93 and the second sliding frame 94, and the two ends of the bidirectional motor 95 respectively have a first output shaft facing the first sliding frame 93 and a second output shaft facing the second sliding frame 94, a first screw rod 96 is coaxially connected to the first output shaft and connected to the first sliding frame 93, and a second screw rod 97 is coaxially connected to the second output shaft and connected to the second sliding frame 94.

[0058] In this embodiment, the first screw rod 96 is coaxially connected to the first output shaft and is threadedly connected to the first sliding frame 93, the second screw rod 97 is coaxially connected to the second output shaft and is threadedly connected to the second sliding frame 94, and when the first clamping block 931 and the second clamping block 941 move toward each other to slide with the inclined surface, the self-propelled leak detection vehicle 8 rises to leave the ground and attaches to the bottom end of the mobile cart 7.

[0059] When the first tube bundle car bottle 11 or the second tube bundle car bottle 12 is switched, it is necessary to detect leaks. The self-propelled leak detection car 8 can move around the first tube bundle car bottle 11 or the second tube bundle car bottle 12, so as to detect whether there is argon gas accumulation around the first tube bundle car bottle 11 or the second tube bundle car bottle 12, and then judge whether the first tube bundle car bottle 11 or the second tube bundle car bottle 12 is leaking. Before using the self-propelled leak detection car 8, the self-propelled leak detection car 8 is attached to the bottom end of the mobile cart 7 through a connecting component, and the bottom end of the self-propelled leak detection car 8 is higher than the ground, so that the mobile cart 7 can drive the self-propelled leak detection car 8 to move together. When leak detection is needed, the bidirectional motor 95 is started so that the first screw rod 96 and the second screw rod 97 are moved together. The second screw rod 97 rotates, and because the first sliding frame 93 and the second sliding frame 94 are slidably arranged on the light rod 92, the first sliding frame 93 and the second sliding frame 94 move in opposite directions and separate from the docking frame 91, so that the self-propelled leak detection vehicle 8 lands and performs leak detection on the surrounding sides of the first tube bundle vehicle bottle 11 or the second tube bundle vehicle bottle 12. When the self-propelled leak detection vehicle 8 returns to the bottom of the mobile cart 7, the first clamping block 931 and the second clamping block 941 are located on both sides of the docking frame 91, and the bidirectional motor 95 is started. The first clamping block 931 and the second clamping block 941 approach each other and move on the inclined surface on the docking frame 91, so that under the action of the inclined surface, the self-propelled leak detection vehicle 8 rises to be attached to the bottom end of the mobile cart 7.

[0060] like Figure 5 , Figure 6 and Figure 7As shown, the self-propelled leak detection vehicle 8 includes a self-propelled vehicle body 81, a lifting plate 82, a scissor-type lifting frame 83, a pump-suction type fixedly installed argon gas detector 84, a first swing pipe 851, a second swing pipe 852, a first worm gear 861, a second worm gear 862, a worm 87 and a single-axis motor 88. The lifting plate 82 is horizontally arranged on the top of the self-propelled vehicle body 81, the scissor-type lifting frame 83 is arranged between the self-propelled vehicle body 81 and the lifting plate 82, the pump-suction type fixedly installed argon gas detector 84 is arranged on the lifting plate 82, and the top and bottom ends of one side of the lifting plate 82 are respectively provided with a first rotating seat 821 and a second rotating seat 822, one end of the first swing pipe 851 is rotatably arranged on the first rotating seat 821 through a first pivot, and the second rotating seat 822 is provided on the lifting plate 82. One end of the second swing tube 852 is rotatably arranged on the second rotating seat 822 through a second pivot, and the first swing tube 851 and the second swing tube 852 are provided with air capture ports. The first swing tube 851 and the second swing tube 852 are connected to the air inlet of the pump-suction fixedly installed argon gas detector 84 through a pipeline, the first worm gear 861 is coaxially fixedly arranged on the first pivot, the second worm gear 862 is coaxially fixedly arranged on the second pivot, the worm 87 is rotatably arranged between the first worm gear 861 and the second worm gear 862 along the tangential direction of the first worm gear 861, the worm 87 is meshed with the first worm gear 861 and the second worm gear 862, and the single-axis motor 88 is arranged on the lifting plate 82, and the output shaft of the single-axis motor 88 is coaxially connected to the worm 87.

[0061] When the self-propelled leak detection vehicle 8 is performing leak detection, the scissor-type lifting frame is started to raise the lifting plate 82 relative to the self-propelled vehicle body 81, and the single-axis motor 88 is started so that the worm 87 drives the first worm gear 861 and the second worm gear 862 to rotate, thereby rotating the first swing tube 851 and the second swing tube 852 from a horizontal posture to a vertical posture, thereby allowing the first swing tube 851 and the second swing tube 852 to extend in the vertical direction and be located outside the first tube bundle vehicle bottle 11 or the second tube bundle vehicle disc. After starting the pump-suction fixed-mounted argon gas detector 84, the air capture ports on the first swing tube 851 and the second swing tube 852 can absorb the gas around the first tube bundle vehicle bottle 11 or the second tube bundle vehicle disc. When the argon concentration at a certain point around the first tube bundle vehicle bottle 11 or the second tube bundle vehicle disc is high, it means that a leak has occurred at that point and it needs to be repaired.

[0062] In summary, the embodiment of the present invention provides a high-efficiency helium tube bundle car zero-leakage replacement and drying device, which includes a drying and replacement mechanism, and the drying and replacement mechanism includes a first pair of joints, a second pair of joints, a third pair of joints, a seventh solenoid valve, an eighth solenoid valve, a pipeline pressure detection component and a dry gas output component. By selectively opening and closing the seventh solenoid valve and the eighth solenoid valve, the first tube bundle car bottle and the second tube bundle car bottle can continuously supply gas to the gas-consuming equipment, thereby ensuring the continuity of gas supply, and when the helium in the first tube bundle car bottle or the second tube bundle car bottle is emptied, by starting the dry gas output component, dry gas can be injected into the exhausted first tube bundle car bottle or the second tube bundle car bottle to purge it.

[0063] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A highly efficient zero-leakage replacement and drying device for helium tube bundle vehicles, characterized in that: The invention comprises a first pair of joints (61), a second pair of joints (62), a third pair of joints (63), a seventh solenoid valve (37), an eighth solenoid valve (38), a pipeline pressure detection assembly and a dry gas output assembly, wherein the first pair of joints (61) is in communication with a first tube bundle vehicle bottle (11), the second pair of joints (62) is in communication with a second tube bundle vehicle bottle (12), the third pair of joints (63) is connected to the first pair of joints (61) to form a first main pipeline, the third pair of joints (63) is connected to the second pair of joints (62) to form a second main pipeline, the seventh solenoid valve (37) is arranged on the first main pipeline, the eighth solenoid valve (38) is arranged on the second main pipeline, the pipeline pressure detection assembly is arranged on the first main pipeline and the second main pipeline, and the output port of the dry gas output assembly is in communication with the first main pipeline and the second main pipeline; The invention also comprises a mobile cart (7), a self-propelled leak detection cart (8) and a connection assembly. The drying and replacement mechanism is arranged on the mobile cart (7). The connection assembly comprises a docking frame (91), a light rod (92), a first sliding frame (93), a second sliding frame (94), a bidirectional motor (95), a first screw rod (96) and a second screw rod (97). The docking frame (91) is arranged at the bottom end of the mobile cart (7). The docking frame (91) is provided with inclined surfaces on both sides along the width direction of the mobile cart (7). The light rod (92) is arranged on both sides of the self-propelled leak detection cart (8) along its length direction. The light rod (92) extends along the width direction of the self-propelled leak detection cart (8). The first sliding frame (93) and the second sliding frame (94) are mutually connected. The first sliding frame (93) is provided with a first clamping block (931) at the top of the side of the first sliding frame (93) facing the second sliding frame (94), and the second sliding frame (94) is provided with a second clamping block (941) at the top of the side of the first sliding frame (93). The bidirectional motor (95) is provided between the first sliding frame (93) and the second sliding frame (94), and the two ends of the bidirectional motor (95) respectively have a first output shaft facing the first sliding frame (93) and a second output shaft facing the second sliding frame (94). The first screw rod (96) is coaxially connected to the first output shaft and connected to the first sliding frame (93), and the second screw rod (97) is coaxially connected to the second output shaft and connected to the second sliding frame (94).

2. The high-efficiency helium tube bundle zero-leakage replacement and drying device according to claim 1 is characterized in that: The invention also comprises a helium recovery component, which comprises a vacuum pump (41), a first solenoid valve (31), a second solenoid valve (32), a third solenoid valve (33) and a helium recovery bottle (21); the vacuum pump (41) has an exhaust port connected to the first pair of joints (61) and the second pair of joints (62) through a pipeline; the first solenoid valve (31) is arranged on the connecting pipeline between the vacuum pump (41) and the first pair of joints (61); the second solenoid valve (32) is arranged on the connecting pipeline between the vacuum pump (41) and the second pair of joints (62); the vacuum pump (41) has an exhaust port connected to the helium recovery bottle (21) through a pipeline; and the third solenoid valve (33) is arranged on the connecting pipeline between the vacuum pump (41) and the helium recovery bottle (21).

3. The high-efficiency helium tube bundle zero-leakage replacement and drying device according to claim 2 is characterized in that: It also includes a waste gas recovery component, which includes a waste gas recovery bottle (22) and a fourth solenoid valve (34). The waste gas recovery bottle (22) is connected to the exhaust port of the vacuum pump (41), and the fourth solenoid valve (34) is arranged on the connecting pipeline between the vacuum pump (41) and the waste gas recovery bottle (22).

4. The high-efficiency helium tube bundle zero-leakage replacement and drying device according to claim 3 is characterized in that: The dry gas output assembly comprises a clean gas storage bottle (23), a gas dryer (42), a fifth solenoid valve (35) and a sixth solenoid valve (36); an air inlet of the gas dryer (42) is connected to the clean gas storage bottle (23) through a pipeline; an air outlet of the gas dryer (42) is connected to a first main pipeline to form a first branch pipeline; an air outlet of the gas dryer (42) is connected to a second main pipeline to form a second branch pipeline; the fifth solenoid valve (35) is arranged on the first branch pipeline; and the sixth solenoid valve (36) is arranged on the second branch pipeline.

5. The high-efficiency helium tube bundle vehicle zero-leakage replacement and drying device according to claim 1 is characterized in that: The pipeline pressure detection component comprises an on-site pressure gauge (51) and a remote pressure sensor (52), wherein the on-site pressure gauge (51) and the remote pressure sensor (52) are arranged on a first main pipe and a second main pipe, and an output end of the remote pressure sensor (52) is communicatively connected to a signal input end of a central control room.

6. The high-efficiency helium tube bundle vehicle zero-leakage replacement and drying device according to claim 1 is characterized in that: It also includes two excess flow switches (53), which are respectively arranged on the first main pipe and the second main pipe.

7. The high-efficiency helium tube bundle zero-leakage replacement and drying device according to claim 1 is characterized in that: It also includes a pressure regulating valve (39), which is arranged on the connecting pipeline between the seventh solenoid valve (37) and the third pair of joints (63), and the eighth solenoid valve (38) and the third pair of joints (63).

8. The high-efficiency helium tube bundle zero-leakage replacement and drying device according to claim 7 is characterized in that: It also includes a particle filter (43), and the particle filter (43) is arranged on the connecting pipeline between the pressure regulating valve (39) and the seventh solenoid valve (37) and the eighth solenoid valve (38).

9. The high-efficiency helium tube bundle zero-leakage replacement and drying device according to claim 1, characterized in that: The self-propelled leak detection vehicle (8) comprises a self-propelled vehicle body (81), a lifting plate (82), a scissor-type lifting frame (83), a pump-suction type fixedly installed argon gas detector (84), a first swing pipe (851), a second swing pipe (852), a first worm gear (861), a second worm gear (862), a worm (87) and a single-axis motor (88); the lifting plate (82) is arranged on the top of the self-propelled vehicle body (81) in a horizontal direction; the scissor-type lifting frame (83) is arranged between the self-propelled vehicle body (81) and the lifting plate (82); the pump-suction type fixedly installed argon gas detector (84) is arranged on the lifting plate (82); a first rotating seat (821) and a second rotating seat (822) are respectively arranged at the top and bottom ends of one side of the lifting plate (82); one end of the first swing pipe (851) is rotatably arranged on the first rotating seat (821) through a first pivot; the second swing pipe (851) is rotatably arranged on the first rotating seat (821) through a first pivot; One end of the tube (852) is rotatably arranged on the second rotating seat (822) through a second pivot, and the first swing tube (851) and the second swing tube (852) are provided with air capture ports. The first swing tube (851) and the second swing tube (852) are connected to the air inlet of the pump-suction fixed argon gas detector (84) through a pipeline. The first worm gear (861) is coaxially fixedly arranged on the first pivot, and the second worm gear (862) is coaxially fixedly arranged on the second pivot. The worm (87) is rotatably arranged between the first worm gear (861) and the second worm gear (862) along the tangential direction of the first worm gear (861), and the worm (87) is meshed with the first worm gear (861) and the second worm gear (862). The single-axis motor (88) is arranged on the lifting plate (82), and the output shaft of the single-axis motor (88) is coaxially connected to the worm (87).

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