Aluminum modularized titanium-series solid hydrogen storage equipment with single tube capable of being replaced

Abstract

The invention relates to the technical field of solid hydrogen storage equipment, in particular to aluminum modularized titanium solid hydrogen storage equipment with a replaceable single tube. The middle shell is connected to the lower shell in a sliding manner; the upper shell is connected to the middle shell in a sliding mode, and the lower shell, the middle shell and the upper shell are combined to form a storage device used for storing materials; the connectors are fixedly connected between the two adjacent shells; the installation grooves are formed, and every two adjacent semicircular installation grooves are combined to form a complete storage groove; a guide rail rotationally connected to the bottom end of a mounting groove is driven to rotate through a guide groove formed in the peripheral face of a sliding block, impurities and dust on the mounting groove and the hydrogen storage pipe can be cleaned through the rotating guide rail, the cleanliness of the interior of the device is guaranteed when the device is used every time, and then the aluminum shell is high in heat conductivity coefficient and high in heat transfer speed, so that the service life of the device is prolonged. And the response time of hydrogen release of the equipment is shortened, the overall mass is light, and workers can conveniently overhaul and maintain the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of solid-state hydrogen storage equipment, in particular to a modular titanium-based solid-state hydrogen storage equipment made of aluminum and capable of single-tube replacement. Background Art

[0002] Hydrogen energy is the ultimate energy source for promoting sustainable energy development and achieving the goal of "carbon neutrality". It is abundant in source, green and low-carbon. In the development of the hydrogen energy industry, the storage and transportation of hydrogen is the key link between upstream hydrogen production and downstream hydrogen use. At present, hydrogen can be stored and transported in three ways: high-pressure gas, liquid and solid. Among them, solid-state hydrogen storage has the advantages of high volume hydrogen storage density, good safety and long storage time, and is considered to be the most promising hydrogen storage technology.

[0003] The design of solid-state hydrogen storage equipment in the prior art is based on the principle of heat exchange. Generally, the hydrogen storage equipment is designed according to the design method of shell and tube heat exchangers, and baffles, tube sheets, sealing plates, etc. are set. The equipment is generally manufactured by welding. Finally, the single hydrogen storage tube (the smallest unit for loading hydrogen storage materials) is passed through the baffle in turn and fixed on the tube sheet to complete the assembly of the whole set of equipment. However, this manufacturing process is complicated, the equipment mass is large, and the cumbersome welding industry makes mass production difficult and subsequent maintenance difficult.

[0004] Therefore, it is necessary to provide an aluminum-made modular titanium-based solid-state hydrogen storage device that can be replaced by a single tube to solve the above problems.

[0005] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0006] Based on the above problems existing in the prior art, the problem to be solved by this application is: the solid-state hydrogen storage equipment in the prior art is relatively complicated in design, the manufacturing process is complex, and the equipment mass is large, which makes mass production difficult, resulting in high design costs, long production cycles, and difficulty in subsequent maintenance.

[0007] The technical solution adopted by the present application to solve the technical problem is: a modular titanium-based solid-state hydrogen storage device made of aluminum and capable of single-tube replacement, comprising:

[0008] Lower housing;

[0009] A middle shell body, slidably connected to the lower shell body;

[0010] An upper shell is slidably connected to the middle shell, and the lower shell, the middle shell and the upper shell are combined to form a storage device for storing materials;

[0011] A connector, fixedly connected between two adjacent shells;

[0012] A mounting groove is provided on the lower shell, the middle shell and the upper shell, and two adjacent semicircular mounting grooves are combined into a complete receiving groove;

[0013] A hydrogen storage pipe, slidably connected to the mounting groove, for storing and collecting hydrogen;

[0014] A cleaning mechanism, rotatably disposed in the mounting groove, for cleaning the inner wall of the mounting groove and the outer wall of the hydrogen storage tube;

[0015] A collector, fixedly connected to the upper shell, for processing the gas in the hydrogen storage tube;

[0016] A connecting pipe, fixedly connected between the collector and the hydrogen storage pipe;

[0017] The water inlet pipe is provided on the lower shell, the middle shell and the upper shell, and is used to adjust the temperature of the hydrogen storage tube placed in the device.

[0018] Preferably, the connector includes a card plate fixedly connected to the lower shell, an adjustment plate corresponding to the card plate is fixed on the middle shell, a slide groove is provided on the adjustment plate, and a rotating shaft is rotatably provided in the slide groove, a connecting plate is fixed on the rotating shaft, a U-shaped connecting frame is rotatably provided on the side wall of the connecting plate, a card groove matching the U-shaped connecting frame is provided on the card plate, and a buckle unit for fixing the connecting plate is fixedly provided on the adjustment plate.

[0019] Preferably, the buckle unit includes two mutually parallel limiting plates fixedly connected to the adjusting plate, and protrusions are fixedly provided on the top ends of the two limiting plates, and the spacing between the two limiting plates is equal to the spacing of the connecting plates.

[0020] Preferably, a positioning column is fixedly provided on the upper end surface of the lower shell, and a positioning groove matching the positioning column is provided on the lower end surface of the middle shell, and the end of the positioning groove is funnel-shaped.

[0021] Preferably, a groove is provided between the lower shell and the middle shell, a spring is fixedly arranged in the groove in the lower shell at the bottom, and the length of the spring in a free state is not less than the distance between the two grooves.

[0022] Preferably, the cleaning mechanism includes a turntable rotatably connected to the bottom end of the mounting groove, a plurality of guide rails parallel to each other are fixedly arranged on the edge of the turntable, a slider is slidably arranged in the mounting groove, a plurality of guide grooves matching the guide rails are opened on the side of the slider, one side of the guide rail is in contact with the inner wall of the mounting groove, and the other side of the guide rail is in contact with the outer wall of the hydrogen storage tube.

[0023] Preferably, the guide rail is arranged in a spiral shape.

[0024] Preferably, a prism is fixedly provided on one end of the sliding block facing the discharge port of the installation groove, and a positioning groove matching the prism is provided on the bottom end of the hydrogen storage tube.

[0025] Preferably, a circulating water telescopic pipe is fixedly connected between the two adjacent shells, and a valve for controlling the flow of water is fixedly connected to the circulating water telescopic pipe.

[0026] Preferably, a quick-connect connector is fixedly provided between two groups of hydrogen storage tubes adjacent to each other in the vertical direction, and the quick-connect connector is fixedly connected to the connecting pipe on the collector.

[0027] The beneficial effects of the present application are as follows: the present application provides an aluminum-made, single-tube replaceable modular titanium-based solid-state hydrogen storage device, which, through the mounting grooves arranged in each shell, enables the staff to place the hydrogen storage tube in the mounting groove of the device when using the device to install the hydrogen storage tube, first engage the positioning groove at the bottom of the hydrogen storage tube with the prism on the slider, and then the slider moves when the hydrogen storage tube is pushed, and then the guide groove arranged on the outer circumferential surface of the slider drives the guide rail connected to the bottom end of the mounting groove to rotate, and the rotating guide rail can clean the impurities and dust on the mounting groove and the hydrogen storage tube to ensure the cleanliness of the interior of the device each time it is used, and then the thermal conductivity of the aluminum shell is high, the heat transfer is fast, the response time of the equipment to release hydrogen is shortened, and the overall weight is light, which is convenient for the staff to inspect and maintain it.

[0028] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0031] Figure 3 It is a schematic diagram of the lower shell structure of the present invention;

[0032] Figure 4 It is a schematic diagram of the structure of the middle shell of the present invention;

[0033] Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0034] Figure 6 It is a schematic diagram of the connector structure of the present invention;

[0035] Figure 7 For the present invention Figure 6 The enlarged structural diagram at C in the middle;

[0036] Figure 8 It is a schematic diagram of the cleaning structure of the present invention.

[0037] In the figure: 1. lower shell; 11. positioning column; 12. positioning groove; 2. middle shell; 21. groove; 22. spring; 3. upper shell; 31. circulating water telescopic pipe; 32. valve; 4. connector; 41. card plate; 42. adjustment plate; 43. slide groove; 44. rotating shaft; 45. connecting plate; 46. U-shaped connecting frame; 47. card groove; 48. buckle unit; 481. limit plate; 482. bump; 5. mounting groove; 6. hydrogen storage tube; 7. cleaning mechanism; 71. turntable; 72. guide rail; 73. slider; 731. prism; 74. guide groove; 8. collector; 81. connecting pipe; 811. quick connector; 9. water inlet pipe. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] In order to enable those skilled in the art to better understand the solution of the present application, the following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0040] Reference Figure 1-3, a modular titanium-based solid-state hydrogen storage device made of aluminum and replaceable by a single tube, comprising: a lower shell 1; a middle shell 2, slidably connected to the lower shell 1; an upper shell 3, slidably connected to the middle shell 2, and the lower shell 1, the middle shell 2 and the upper shell 3 are combined to form a storage device for storing materials; a connector 4, fixedly connected between two adjacent shells; a mounting groove 5, opened on the lower shell 1, the middle shell 2 and the upper shell 3, and the two adjacent semicircular mounting grooves 5 are combined into a complete storage groove; a hydrogen storage tube 6, slidably connected to the mounting groove 5, for storing and collecting hydrogen; a cleaning mechanism 7, rotatably arranged in the mounting groove 5, for cleaning the inner wall of the mounting groove 5 and the outer wall of the hydrogen storage tube 6; a collector 8, fixedly connected to the upper shell 3, for processing the gas in the hydrogen storage tube 6; a connecting pipe 81, fixedly connected between the collector 8 and the hydrogen storage tube 6; a water inlet pipe 9, opened on the lower shell 1, the middle shell 2 and the upper shell 3, for adjusting the temperature of the hydrogen storage tube 6 placed in the device.

[0041] Reference Figure 4-6 The connector 4 includes a card plate 41 fixedly connected to the lower shell 1, an adjusting plate 42 corresponding to the card plate 41 is fixed on the middle shell 2, a slide groove 43 is provided on the adjusting plate 42, and a rotating shaft 44 is rotatably provided in the slide groove 43, a connecting plate 45 is fixedly provided on the rotating shaft 44, a U-shaped connecting frame 46 is rotatably provided on the side wall of the connecting plate 45, a card groove 47 matching the U-shaped connecting frame 46 is provided on the card plate 41, and a buckle unit 48 for fixing the connecting plate 45 is fixedly provided on the adjusting plate 42. By means of the card plate 41 on the lower shell 1 and the adjusting plate 42 on the middle shell 2, when the staff places the middle shell 2 on the lower shell 1, the staff can toggle the connecting plate 45 on the adjusting plate 42. During the adjustment process, the U-shaped connecting frame 46 connected to the connecting plate 45 is rotatably sleeved on the card plate 41 to complete the engagement and increase the stability and safety of the device.

[0042] Reference Figure 1 , 6 and 7, the snap-fit ​​unit 48 includes two mutually parallel limit plates 481 fixedly connected to the adjustment plate 42, and a protrusion 482 is fixedly provided on the top of the two limit plates 481, and the spacing between the two limit plates 481 is equal to the spacing of the connecting plate 45. By means of the two mutually parallel limit plates 481 provided on the adjustment plate 42, when the staff is fixing the connector 4, the connecting plate 45 is snapped between the two limit plates 481, and by means of the protrusion 482 provided on the limit plates 481, the connection plate 45 is positioned and fixed, thereby preventing the connector 4 from being unhooked.

[0043] Reference Figure 1 , 4and 5. A positioning column 11 is fixedly provided on the upper end surface of the lower shell 1, and a positioning groove 12 matching the positioning column 11 is provided on the lower end surface of the middle shell 2. The end of the positioning groove 12 is funnel-shaped. By setting the positioning column 11 on the lower shell 1, it is convenient for the staff to match the positioning groove 12 on the middle shell 2 with the positioning column 11 on the lower shell 1 when assembling the device, which is convenient for the staff to install the device. At the same time, by setting the end of the positioning groove 12 in a funnel shape, it is convenient for the staff to complete the step of aligning the positioning column 11 with the positioning groove 12, thereby saving the time spent on assembling the device and improving the assembly efficiency.

[0044] Reference Figure 3-5 A groove 21 is provided between the lower shell 1 and the middle shell 2. A spring 22 is fixedly provided in the groove 21 in the lower shell 1 at the bottom, and the length of the spring 22 in a free state is not less than the distance between the two grooves 21. By providing the spring 22 between the lower shell 1 and the middle shell 2, the spring 22 between the two shells can provide a certain reverse supporting force when the staff assembles the device, thereby avoiding damage to the shells due to hard contact between the two when the shells are assembled.

[0045] Reference Figure 1 , 4 The cleaning mechanism 7 includes a turntable 71 rotatably connected to the bottom end of the mounting groove 5, and a plurality of guide rails 72 are fixedly arranged on the edge of the turntable 71. A slider 73 is slidably arranged in the mounting groove 5, and a plurality of guide grooves 74 matching the guide rails 72 are opened on the side of the slider 73. One side of the guide rail 72 is in contact with the inner wall of the mounting groove 5, and the other side of the guide rail 72 is in contact with the outer wall of the hydrogen storage tube 6. By setting the turntable 71 at the bottom end of the mounting groove 5, the staff can first fix the slider 73 by bolts when installing the hydrogen storage tube 6. It is fixedly connected to the bottom end of the hydrogen storage tube 6, and then the guide groove 74 on the slider 73 is fitted with the guide rail 72, and the hydrogen storage tube 6 is pushed and installed in the guide groove 74. In the process of pushing the hydrogen storage tube 6, the arc-shaped guide groove 74 can drive the guide rail 72 slidingly connected thereto to rotate, and the rotating guide rail 72 can scrape and clean the impurities inside the installation groove 5. The scraped impurities can drive the guide rail 72 to rotate in the opposite direction again when the staff replaces the hydrogen storage tube 6 in the installation groove 5 to remove the impurities inside, thereby ensuring the cleanliness of the inside of the device.

[0046] Reference Figure 6-8The guide rail 72 is arranged in a spiral shape. By arranging the guide rail 72 in a spiral shape, it is achieved that when the guide rail 72 rotates, the impurities inside it can be rotated out. At the same time, the guide rail 72 fits the inner wall of the hydrogen storage tube 6, increasing the friction between the guide rail 72 and the hydrogen storage tube 6, ensuring that when the staff installs the device in the installation groove 5, the guide rail 72 can remove impurities on its outer surface.

[0047] Reference Figure 8 A prism 731 is fixedly provided on one end of the slider 73 facing the discharge port of the mounting groove 5, and a mounting groove matching the prism 731 is provided on the bottom end of the hydrogen storage tube 6. The prism 731 provided on the slider 73 and the mounting groove on the hydrogen storage tube 6 facilitate the staff to align the position between the slider 73 and the hydrogen storage tube 6 when assembling the device, and also facilitate the staff to fix the two.

[0048] Reference Figure 1-3 A circulating water telescopic pipe 31 is fixedly connected between two adjacent shells, and a valve 32 for controlling the flow of water is fixedly connected to the circulating water telescopic pipe 31. By setting the circulating water telescopic pipe 31 between the two adjacent shells, when the staff transports the heating solution to the shell in the device through the water inlet pipe 9, the solution can be transported to another adjacent shell through the circulating water telescopic pipe 31.

[0049] Reference Figure 1 , 3 4, a quick-connect connector 811 is fixedly provided between two groups of hydrogen storage tubes 6 adjacent in the vertical direction, and the quick-connect connector 811 is fixedly connected to the connecting pipe 81 on the collector 8. The quick-connect connector 811 provided on the connecting pipe 81 can realize synchronous processing of the gases in the two groups of hydrogen storage tubes 6 in the same vertical direction. When releasing hydrogen, hot water is introduced through the water inlet pipe 9, and the hot water flows from the lower shell 1 to the middle shell 2 and the upper shell 3 through the circulating water telescopic pipe 31, and finally the water is discharged from the water outlet pipe. The hydrogen storage material in the hydrogen storage tube 6 releases hydrogen after absorbing heat. After the hydrogen is released, it flows into the connecting pipe 81 through the integrated filtering and explosion-proof bottle mouth valve, and finally converges to the collector 8, and the collector 8 uniformly releases hydrogen to the outside. The outlet of the collector 8 can be equipped with a pressure reducing valve and various connecting connectors according to the requirements of the user terminal.

[0050] The specific solution is as follows: when using the device, the staff places the device in a suitable position, and through the clamping plate 41 provided on the lower shell 1 and the adjusting plate 42 provided on the middle shell 2, when the staff places the middle shell 2 on the lower shell 1, the staff toggles the connecting plate 45 on the adjusting plate 42, and during the adjustment process, the U-shaped connecting frame 46 connected to the connecting plate 45 is rotated to be sleeved on the clamping plate 41, and the clamping is completed to increase the stability and safety of the device, and two mutually parallel limiting plates 481 provided on the adjusting plate 42 are provided, so that when the staff fixes the connector 4, the connecting plate 45 is buckled between the two limiting plates 481, and the protrusion 482 provided on the limiting plate 481 is used to realize the positioning and fixing of the connecting plate 45, so as to prevent the connector 4 from being unhooked, and the turntable 71 provided on the bottom end of the mounting groove 5 realizes the working state. When installing the hydrogen storage tube 6, the personnel first fix the slider 73 to the bottom end of the hydrogen storage tube 6 by bolts, and then fit the guide groove 74 on the slider 73 with the guide rail 72, and push the hydrogen storage tube 6 into the guide groove 74 to install it. In the process of pushing the hydrogen storage tube 6, the arc-shaped guide groove 74 can drive the guide rail 72 slidably connected thereto to rotate, and the rotating guide rail 72 can scrape and clean the impurities inside the installation groove 5, and the impurities after scraping can be driven by the staff to rotate the guide rail 72 in the opposite direction to remove the impurities inside when replacing the hydrogen storage tube 6 in the installation groove 5, so as to ensure the cleanliness of the inside of the device. When releasing hydrogen, hot water is introduced into the water inlet pipe 9, and the hot water flows from the lower shell 1 to the middle shell 2 and the upper shell 3 through the circulating water telescopic pipe 31, and finally the water is discharged from the water outlet pipe, and the hydrogen storage material in the hydrogen storage tube 6 releases hydrogen after absorbing heat. After the hydrogen is released, it flows into the connecting pipe 81 through the integrated filtering and explosion-proof bottle mouth valve, and finally converges to the collector 8, from which the hydrogen is uniformly released to the outside. The outlet of the collector 8 can be equipped with a pressure reducing valve and various connecting joints according to the requirements of the user terminal.

[0051] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary, and within the spirit of the present invention, the technical features in the above embodiments or in different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0052] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A modular titanium-based solid-state hydrogen storage device made of aluminum and replaceable in a single tube, characterized in that: include: Lower housing (1); A middle shell (2) slidably connected to the lower shell (1); An upper shell (3) is slidably connected to the middle shell (2), and the lower shell (1), the middle shell (2) and the upper shell (3) are combined to form a storage device for storing materials; A connector (4) fixedly connected between two adjacent housings; A mounting groove (5) is provided on the lower shell (1), the middle shell (2) and the upper shell (3), and two adjacent semicircular mounting grooves (5) are combined into a complete receiving groove; A hydrogen storage pipe (6) is slidably connected to the mounting groove (5) and is used for storing and collecting hydrogen; a cleaning mechanism (7), rotatably disposed in the installation groove (5), and used for cleaning the inner wall of the installation groove (5) and the outer wall of the hydrogen storage tube (6); A collector (8) fixedly connected to the upper shell (3) and used for processing the gas in the hydrogen storage tube (6); A connecting pipe (81) fixedly connected between the collector (8) and the hydrogen storage pipe (6); The water inlet pipe (9) is provided on the lower shell (1), the middle shell (2) and the upper shell (3) and is used to adjust the temperature of the hydrogen storage tube (6) placed in the device.

2. The modular titanium-based solid-state hydrogen storage device made of aluminum and replaceable in a single tube according to claim 1, characterized in that: The connector (4) comprises a card plate (41) fixedly connected to the lower shell (1); an adjustment plate (42) corresponding to the card plate (41) is fixedly provided on the middle shell (2); a slide groove (43) is provided on the adjustment plate (42); a rotating shaft (44) is rotatably provided in the slide groove (43); a connecting plate (45) is fixedly provided on the rotating shaft (44); a U-shaped connecting frame (46) is rotatably provided on the side wall of the connecting plate (45); a card groove (47) matching the U-shaped connecting frame (46) is provided on the card plate (41); and a buckle unit (48) for fixing the connecting plate (45) is fixedly provided on the adjustment plate (42).

3. The aluminum-made, single-tube replaceable modular titanium-based solid-state hydrogen storage device according to claim 2, characterized in that: The buckle unit (48) comprises two mutually parallel limiting plates (481) fixedly connected to the adjustment plate (42), and protrusions (482) are fixedly arranged on the top ends of the two limiting plates (481), and the spacing between the two limiting plates (481) is equal to the spacing of the connecting plates (45).

4. The aluminum-made, single-tube replaceable modular titanium-based solid-state hydrogen storage device according to claim 1, characterized in that: A positioning column (11) is fixedly arranged on the upper end surface of the lower shell (1), and a positioning groove (12) matching the positioning column (11) is opened on the lower end surface of the middle shell (2), and the end of the positioning groove (12) is arranged in a funnel shape.

5. The aluminum-made, single-tube replaceable modular titanium-based solid-state hydrogen storage device according to claim 1, characterized in that: A groove (21) is provided between the lower shell (1) and the middle shell (2); a spring (22) is fixedly arranged in the groove (21) in the lower shell (1) at the bottom end, and the length of the spring (22) in a free state is not less than the distance between the two grooves (21).

6. The aluminum-made, single-tube replaceable modular titanium-based solid-state hydrogen storage device according to claim 1, characterized in that: The cleaning mechanism (7) comprises a turntable (71) rotatably connected to the bottom end of the mounting groove (5), a plurality of mutually parallel guide rails (72) are fixedly arranged on the edge of the turntable (71), a slider (73) is slidably arranged in the mounting groove (5), a plurality of guide grooves (74) matching the guide rails (72) are opened on the side of the slider (73), one side of the guide rail (72) is in contact with the inner wall of the mounting groove (5), and the other side of the guide rail (72) is in contact with the outer wall of the hydrogen storage tube (6).

7. The aluminum-made, single-tube replaceable modular titanium-based solid-state hydrogen storage device according to claim 6, characterized in that: The guide rail (72) is arranged in a spiral shape.

8. The aluminum-made, single-tube replaceable modular titanium-based solid-state hydrogen storage device according to claim 6, characterized in that: A prism (731) is fixedly arranged on one end of the sliding block (73) facing the discharge port of the mounting groove (5), and a mounting groove matching the prism (731) is provided on the bottom end of the hydrogen storage tube (6).

9. The aluminum-made, single-tube replaceable modular titanium-based solid-state hydrogen storage device according to claim 1, characterized in that: A circulating water telescopic pipe (31) is fixedly connected between the two adjacent shells, and a valve (32) for controlling the flow of water is fixedly connected to the circulating water telescopic pipe (31).

10. The aluminum-made, single-tube replaceable modular titanium-based solid-state hydrogen storage device according to claim 1, characterized in that: A quick-connect connector (811) is fixedly arranged between two groups of hydrogen storage tubes (6) adjacent to each other in the vertical direction, and the quick-connect connector (811) is fixedly connected to the connecting pipe (81) on the collector (8).

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