Heat exchanger plate transporting tool and method

Abstract

The present application relates to heat exchange plate transport technical field, especially heat exchanger heat exchange plate transport frock and transport method.Its technical scheme includes: lower assembly, heat exchange plate body, heat exchange plate body is placed in lower assembly, lower assembly is staggered with the upper assembly matched with it on the upper assembly, to form a sealed cavity to isolate the heat exchange plate body, the lower assembly bottom is provided with a cavity and is communicated with the sealed cavity;Negative pressure positioning mechanism is used for positioning heat exchange plate and adaptive adjustment of force with the sealed cavity negative pressure condition.The present application avoids the bolt fixing, dismounting operation to the heat exchange plate in transportation, improves the transportation efficiency;In transportation, the acceleration and deceleration of the carrier are used to protect the heat exchange plate, the heat exchange plate is isolated by negative pressure, and microbial pollution is avoided;And under the negative pressure condition, the outside temperature and the internal heat exchange are reduced, so that the internal temperature and humidity are stable, which is beneficial to the safe transportation of the heat exchange plate.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger plate transportation technology, and in particular to a heat exchanger plate transportation fixture and transportation method. Background Technology

[0002] Plate heat exchangers consist of a series of corrugated metal heat exchange plates stacked together and covered with sealing gaskets. Thin rectangular channels are formed between the heat exchange plates, allowing heat exchange to occur. Plate heat exchangers are ideal devices for liquid-liquid and liquid-vapor heat exchange. The manufacturing process of plate heat exchanger plates involves several steps, from raw material rolling to final forming and installation. Finished and semi-finished heat exchanger plates inevitably undergo transportation during transfer; however, for heat exchanger plates with special requirements, special care must be taken to protect them during transportation.

[0003] Food-grade heat exchanger plates require strict hygiene during transportation to prevent contamination. Furthermore, the temperature and humidity of the plates and accessories must be controlled to ensure stable installation. Protecting the plates from physical damage is also crucial. Current standard transport methods use mounting brackets compatible with the plates, which are typically used for open-air transport and require multiple bolts. While sealed wooden crates offer some isolation and protection, they are cumbersome to handle during loading and unloading. Therefore, these methods cannot meet the stringent requirements of transporting food-grade heat exchanger plates, highlighting the need for improved transportation measures.

[0004] To address this, a heat exchanger plate transport fixture and method are proposed that allows for easy and stable fixing before transportation, protection of the heat exchanger plates during transportation, automatic maintenance of stable temperature and humidity in the environment surrounding the heat exchanger plates, and convenient unloading. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the background art by proposing a heat exchanger plate transportation fixture and method that is convenient to fix and stabilize before transportation, automatically maintains the temperature and humidity of the environment in which the heat exchanger plates are located during transportation, and is convenient for unloading.

[0006] The technical solution of the present invention: a heat exchanger plate transport fixture, comprising:

[0007] The lower assembly and the heat exchange plate are placed inside the lower assembly. Upper assemblies that cooperate with the lower assembly are staggered on the lower assembly to form a sealed cavity to isolate the heat exchange plate. A partition cavity is provided at the bottom of the lower assembly and communicates with the sealed cavity.

[0008] The negative pressure positioning mechanism is used to position the heat exchange plates and adaptively adjust the force according to the negative pressure conditions of the sealed cavity.

[0009] The air extraction mechanism is located on one side of the lower assembly. It uses the power converted from the acceleration and deceleration during the transport of the vehicle as a source to achieve air extraction and create negative pressure in the sealed cavity.

[0010] The air extraction and fixing mechanism is fixed at the bottom of the lower assembly. It uses its own weight to draw out the gas in the sealed cavity during external lifting, creating a negative pressure in the sealed cavity. The pressure difference is used to tightly adhere the lower assembly to the upper assembly.

[0011] Preferably, the lower assembly is provided with a pad located on the underside of the heat exchange plate, the pad being adapted and fitted to the heat exchange plate, and the cavity is provided with vents located on both sides of the pad.

[0012] Preferably, the negative pressure positioning mechanism includes a square tube fixed on the lower assembly for inserting the liquid outlet of the heat exchange plate. A straight groove tube is provided on the inner side of the square tube, and a movable disc is slidably provided on the inner side of the straight groove tube. A connecting member that penetrates the square tube is fixed on the movable disc, and an abutment strip for abutting the heat exchange plate is fixed at the other end of the connecting member. A straight groove is provided on the square tube for the connecting member to pass through and for ventilation.

[0013] Preferably, the air extraction mechanism includes a hollow column fixed to one side of the lower assembly. Two impact plates are slidably arranged inside the hollow column. The two impact plates are fixed to the inner wall of the hollow column by springs on the opposite side. One-way valves for venting air outward are provided at both ends of the hollow column. One-way valves for venting air into the hollow column are provided at the end of the hollow column. One-way valves for venting air into the hollow column are provided at the end of the hollow column. One-way valves are connected to the partition cavity through a short pipe and fixed to the lower assembly. An impact ball is provided between the two impact plates, which moves freely inside the hollow column and vents the gas inside the hollow column when it impacts the impact plates.

[0014] Preferably, the air extraction and fixing mechanism includes a hollow column fixed to the lower side of the lower assembly. Two movable plates are slidably arranged on the inner side of the hollow column, forming an air cavity between the two movable plates and the hollow column. A pull strap connects the two movable plates. An extension tube communicating with the cavity and fixed to the lower assembly is fixed to the upper side of the hollow column. A traction cable extending to the outside of the hollow column is fixed to the opposite side of the pull strap. A lifting component for hoisting is fixed to the free end of the traction cable. The lifting component slides on the lower assembly through a guide fixed to the lower assembly. A limiting component for locking the movement position of the lifting component is fixed on the lower assembly.

[0015] Preferably, the limiting component includes two strips fixed to the lower assembly, with a through-hole post through each strip. The end of the through-hole post near the guide is rounded, and a disc is fixed to the other end of the through-hole post. A tension spring is fixed between the disc and the strip.

[0016] Preferably, a pressing plate adapted to the heat exchange plate is provided on the upper side of the heat exchange plate body, and an air bladder is provided on the upper assembly around the heat exchange plate body to expand and squeeze the pressing plate to keep the heat exchange plate body stable when the sealed cavity is under negative pressure. An air passage communicating with the outside is provided on the upper side of the air bladder.

[0017] Preferably, the upper assembly has an air port on its upper side that corresponds to the position of the square tube and connects the square tube to the outside. The upper assembly has two handles on its outer side. The lower assembly has a regulating valve fixed on it for manually adjusting the pressure balance inside and outside the diaphragm.

[0018] Preferably, the impact plate is provided with a pressure regulating mechanism, which includes an internally threaded cylinder rotatably connected to one side of the impact plate. The internally threaded cylinder is connected to a threaded block, and a push rod that penetrates the impact plate is fixed on the threaded block. The other end of the push rod is fixed with a plug plate for blocking the air outlet, and an airbag ring is fixed on the plug plate.

[0019] A method for transporting heat exchanger plates using a transport fixture, comprising the following steps:

[0020] Preparation before lifting: Insert the liquid outlet of the heat exchange plate into the negative pressure positioning mechanism, and then seal and isolate the heat exchange plate by engaging the upper and lower assemblies;

[0021] Lifting: The external lifting equipment is directly hooked to the two lifting parts and then lifted directly. Through its own gravity and the use of the air extraction fixing mechanism, the closed cavity formed by the lower and upper assemblies is evacuated, so that the lower and upper assemblies are stably adsorbed together. The negative pressure positioning mechanism abuts against the heat exchange plate under the action of negative pressure to keep the heat exchange plate stable. The airbag simultaneously wraps the heat exchange plate and the pressing plate to achieve a protective and buffering effect.

[0022] Road transport: The acceleration and deceleration of the vehicle during the transport process is converted into the power source of the air extraction mechanism, which intermittently extracts gas from the cavity and maintains negative pressure in the closed cavity;

[0023] Unloading: Unload by the hook of the lifting component. Manually operate the air valve to adjust until the closed cavity is the same as the outside air pressure, disengage the lower assembly from the upper assembly, automatically release the negative pressure positioning mechanism and air bag function, and directly remove the heat exchange plate body for heat exchange plate body installation.

[0024] Compared with the prior art, the present invention has the following beneficial technical effects:

[0025] The weight of the heat exchange plates and their components causes the lifting element to slide against the guide during the pulling process. The movable plates connected to the lifting element by the traction cable slide against the empty column, and the pulling strap is stretched. This increases the size of the air cavity formed between the two movable plates and the empty column, allowing air to enter through the extension pipe. The pressure in the sealed cavity formed by the lower and upper assemblies decreases, and air enters the cavity through the vents. Under continuous pulling action, the lifting element contacts and is restrained by the limiting components, maintaining its position. At this point, the air cavity between the movable plates is at its largest volume, and the sealed cavity achieves negative pressure, providing sealing protection for the heat exchange plates.

[0026] The space formed by the movable disc and the straight groove tube is connected to the sealed cavity through the straight groove. The pressure difference causes the movable disc inside the straight groove tube to slide, and the connecting parts on the movable disc cause the abutment strip to abut against the liquid flow holes on the heat exchange plate, thus achieving a certain degree of fixation. The air bladder set on the upper assembly expands continuously under the pressure difference through the air passage, causing the air bladder to abut against the heat exchange plate and the pressing plate, thus providing protection and fixation for the heat exchange plate. Under negative pressure, the lower assembly and the upper assembly will remain tightly fitted under the pressure difference. Therefore, when loading the heat exchange plate, no manual bolt fixing is required, greatly reducing preparation time and improving efficiency. At the same time, the complete sealing enhances the protection of the heat exchange plate.

[0027] During acceleration, deceleration, or uphill / downhill movement, the impact ball moves within the hollow column, impacting the impact plate. When the impact plate is subjected to impact, it moves and compresses the spring, expelling air from the spring's location through a one-way valve. This allows the air inside the sealed cavity formed by the lower and upper assemblies to be expelled. When the negative pressure in this cavity weakens, the impact of the impact ball replenishes the pressure, maintaining stability. A pressure regulating mechanism is also included, allowing for adjustment based on actual needs. It automatically restricts operation once the set negative pressure is reached and releases the restriction when the negative pressure decreases, isolating the food-grade heat exchange plates from the outside environment to prevent microbial contamination. This isolation and negative pressure also reduce heat exchange with the outside, resulting in relatively stable temperature and humidity. Attached Figure Description

[0028] Figure 1A schematic diagram of one embodiment of the present invention is provided;

[0029] Figure 2 for Figure 1 A sectional perspective view;

[0030] Figure 3 for Figure 1 A magnified structural diagram at point A;

[0031] Figure 4 for Figure 3 A schematic diagram of part of the structure;

[0032] Figure 5 for Figure 4 A schematic diagram of the positioning unit;

[0033] Figure 6 for Figure 4 A schematic diagram of a half-section structure;

[0034] Figure 7 for Figure 6 A magnified structural diagram at point A;

[0035] Figure 8 for Figure 6 A magnified structural diagram at point B.

[0036] Figure label:

[0037] 10. Lower assembly; 11. Upper assembly; 12. Cavity; 13. Pad;

[0038] 20. Square tube; 21. Straight grooved tube; 22. Movable disc; 23. Connecting piece; 24. Abutment strip;

[0039] 30. Hollow column; 31. Impact plate; 32. Spring; 33. One-way valve one; 34. One-way valve two; 35. Short pipe; 36. Impact ball;

[0040] 40. Empty column; 41. Movable plate; 42. Pull strap; 43. Extension tube; 44. Traction cable; 45. Lifting component; 46. Guide component; 47. Fixed wheel assembly;

[0041] 48. Limiting component; 481. Strip; 482. Insert post; 483. Rounded corner; 484. Disc; 485. Tension spring;

[0042] 50. Airbag; 51. Airway;

[0043] 60. Heat exchanger plate body; 61. Pressing plate;

[0044] 70. Adjust the air valve;

[0045] 80. Internal threaded cylinder; 81. Threaded block; 82. Push rod; 83. Plug plate; 84. Airbag ring. Detailed Implementation

[0046] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0047] Example 1, as Figures 1-8 As shown, the present invention proposes a heat exchanger plate transport fixture, including a lower assembly 10 and heat exchanger plate bodies 60. The heat exchanger plate bodies 60 are placed inside the lower assembly 10. Upper assemblies 11 are staggered on the lower assembly 10 to form a sealed cavity that isolates the heat exchanger plate bodies 60. A sealing strip is fixed to the edge of the lower assembly 10, and the sealing strip forms a frame along the edge of the lower assembly 10. The frame structure of the sealing strip is in contact with the inner wall of the upper assembly 11, so that the lower assembly 10 and the upper assembly 11 are in close contact. A partition cavity 12 is provided at the bottom of the lower assembly 10. The partition cavity 12 is provided with air holes located on both sides of the gasket 13, and the partition cavity 12 is connected to the sealed cavity through the air holes.

[0048] Furthermore, in this embodiment, the sealing strip is made of rubber and is slightly raised to ensure that it fits tightly when the lower assembly 10 and the upper assembly 11 are in contact. Both the lower assembly 10 and the upper assembly 11 are U-shaped and form a complete cube when assembled. Except for the bottom of the heat exchange plate 60, which contacts the lower assembly 10, a cavity structure with a downward opening is formed on the outer periphery of the heat exchange plate 60. A pad 13 is provided on the lower assembly 10 and located on the lower side of the heat exchange plate 60. The pad 13 fits and conforms to the heat exchange plate 60 to avoid wear and damage to the bottom of the heat exchange plate 60.

[0049] A negative pressure positioning mechanism is used to position the heat exchange plates and adaptively adjust the force according to the negative pressure condition of the sealed cavity. The negative pressure positioning mechanism includes a square tube 20 fixed on the lower assembly 10 for inserting the liquid outlet of the heat exchange plate 60. The outer diameter of the square tube 20 is smaller than the inner diameter of the heat exchange plate 60, so that the heat exchange plate 60 is not restricted by the square tube 20 when it is placed and removed. A straight groove tube 21 is provided on the inner side of the square tube 20. A movable plate 22 is slidably provided on the inner side of the straight groove tube 21. A connecting piece 23 that penetrates the square tube 20 is fixed on the movable plate 22. An abutment strip 24 for abutting the heat exchange plate 60 is fixed on the other end of the connecting piece 23. A straight groove for the connecting piece 23 to pass through and be ventilated is provided on the square tube 20.

[0050] Furthermore, the upper assembly 11 has an air vent on its upper side that corresponds to the position of the square tube 20, allowing the square tube 20 to communicate with the outside. The air vent connects the inner side of the square tube 20 to the outside. Two handles are provided on the outer side of the upper assembly 11 for easy removal and installation. In this embodiment, the straight groove tube 21, movable disc 22, connecting piece 23, and abutment strip 24 are all provided in pairs. Furthermore, the abutment strip 24 can be retracted within the outer circle of the square tube 20 when not in use, avoiding the need for... The sliding connection between the straight groove tube 21 and the movable disc 22 is a prior art technique, and its purpose is to prevent pressure leakage when the straight groove tube 21 and the movable disc 22 slide. At the same time, the straight groove through which the connecting member 23 passes still maintains its ventilation function when the abutment strip 24 is closed. The abutment strip 24 will not block the ventilation formed by the movement of the movable disc 22. A sealing strip is provided on the upper end of the square tube 20, and the sealing strip abuts against the top of the upper assembly 11. The outer side of the abutment strip 24 is provided as a rubber sheet.

[0051] An air extraction mechanism, located on one side of the lower assembly 10, utilizes the power converted from acceleration and deceleration during transport to achieve air extraction and create negative pressure within the sealed cavity. The air extraction mechanism includes a hollow column 30 fixed to one side of the lower assembly 10. Two impact plates 31 are slidably arranged inside the hollow column 30. The two impact plates 31 are fixed to the inner wall of the hollow column 30 by springs 32 on the side furthest from each other. One-way valves 33 for exhausting air are provided at both ends of the hollow column 30. One-way valves 34 for air intake into the hollow column 30 are provided at the end of the hollow column 30 when the impact plates 31 are close together. One-way valves 34 are connected to the partition 12 through a short pipe 35 and fixed to the lower assembly 10. An impact ball 36 is arranged between the two impact plates 31, which moves freely within the hollow column 30 and discharges the gas inside the hollow column 30 when it impacts the impact plates 31.

[0052] Furthermore, in this embodiment, two air extraction mechanisms are provided, symmetrically arranged on both sides of the bottom of the lower assembly 10; each of the four corners of the impact plate 31 is provided with an extension slide bar to maintain the sliding stability between the impact plate 31 and the hollow column 30; when the impact plate 31 is compressed, the air in the space on the side of the impact plate 31 where the spring 32 is fixed is exhausted outward through the one-way valve 33, and the one-way valve 34 introduces the gas in the diaphragm 12 into the space on the side of the impact plate 31 where the spring 32 is fixed through the short pipe 35; the impact ball 36 can move freely in the hollow column 30, and the impact ball 36 can impact the impact plate 31 under its own inertia through the acceleration and deceleration of the carrier, thereby achieving the function of exhaust.

[0053] The air extraction and fixing mechanism is fixed to the bottom of the lower assembly 10. It utilizes its own weight and the pulling force during external lifting to extract gas from the sealed cavity, creating a negative pressure within the cavity. This pressure difference tightly binds the lower assembly 10 to the upper assembly 11. The air extraction and fixing mechanism includes a hollow column 40 fixed to the lower side of the lower assembly 10. Two movable plates 41 are slidably arranged on the inner side of the hollow column 40, forming an air cavity between the two movable plates 41 and the hollow column 40. A pull strap 42 connects the two movable plates 41. A connection to the partition cavity 12 is fixed to the upper side of the hollow column 40. The extension tube 43 is fixed to the lower assembly 10 and communicates with the air chamber. The pull strap 42 is fixed to the side away from the outside of the empty column 40 with a traction cable 44. The free end of the traction cable 44 is fixed with a lifting member 45 for hoisting. The lifting member 45 slides on the lower assembly 10 through the guide member 46 fixed on the lower assembly 10. Fixed wheel sets 47 are provided on both sides of the empty column 40 to guide the lifting member 45 to turn when it is pulled. The lower assembly 10 is fixed with a limiting component 48 to lock the movement position of the lifting member 45.

[0054] Furthermore, in this embodiment, the hollow column 40 is located at the bottom of the lower assembly 10 and between the two hollow columns 30. The sliding relationship between the movable plate 41 and the hollow column 40 adopts the prior art. At the same time, guide rods are provided on the two movable plates 41 to ensure the sliding stability of the movable plates 41. The elastic and telescopic design of the pull strap 42 is conducive to providing tension after the movable plates 41 move away from each other, so that it can automatically return to its original position after the restriction is released. In order to ensure that the moving speed of the movable plate 41 is relatively balanced, a fixing member is provided at the center of the pull strap 42 to fix the pull strap 42 to the hollow column 40. Meanwhile, the partition 12 is connected to the air chamber formed between the two movable plates 41 through the extension pipe 43, so that the air in the partition 12 can be extracted when the movable plates 41 move away from each other; the lifting member 45 is provided with a hook ring for lifting; the function of the limiting component 48 is to ensure that the lifting member 45 is limited after reaching a certain height, so that the lifting member 45 is kept in a limited state; the guide member 46 includes two guide rods, both ends of which are fixed to the lower assembly 10 through fixing ears; the lifting member 45 is slidably sleeved on the guide member 46, and the fixing ears can limit the sliding distance of the lifting member 45.

[0055] Optionally, any limiting component 48 includes two strips 481 fixed to the lower assembly 10, with a through-hole post 482 provided on the strip 481. The end of the through-hole post 482 near the guide 46 is machined with a rounded corner 483, and a disc 484 is fixed to the other end of the through-hole post 482. A tension spring 485 is fixed between the disc 484 and the strip 481.

[0056] Furthermore, the rounded corner 483 at the end of the plug-in post 482 is designed to facilitate the guiding sliding after the lifting member 45 moves upward, so that the plug-in post 482 slides with the strip 481. When the lifting member 45 moves to the upper side of the plug-in post 482, the movement of the lifting member 45 can be automatically restricted, so that the lifting member 45 maintains its position.

[0057] Optionally, a pressing plate 61 adapted to the heat exchange plate 60 is provided on the upper side of the heat exchange plate 60. The pressing plate 61 applies pressure by gravity to press the heat exchange plate 60. An air bladder 50 is provided on the upper assembly 11 around the heat exchange plate 60 to expand and squeeze the pressing plate 61 when the sealed cavity is under negative pressure, so as to keep the heat exchange plate 60 stable. An air passage 51 connected to the outside is provided on the upper side of the air bladder 50 to allow outside air to enter into the air passage 51. An adjusting valve 70 is fixed on the lower assembly 10 for manually adjusting the pressure balance inside and outside the partition cavity 12. Adjusting the valve 70 can restore the sealed cavity formed by the lower assembly 10 and the upper assembly 11 to the same pressure as the outside, so as to facilitate the separation of the lower assembly 10 and the upper assembly 11.

[0058] Furthermore, the airbag 50 is disposed on the outer periphery of the heat exchange plate 60 and the pressing plate 61, so that the sealed cavity formed by the lower assembly 10 and the upper assembly 11 is under negative pressure, and the pressure difference between the inside and outside causes the airbag 50 to expand, thereby protecting the outer periphery of the heat exchange plate 60. At the same time, as the airbag 50 continues to expand, since the top of the heat exchange plate 60 does not contact the upper assembly 11, part of the expanding airbag 50 continues to expand, so that the pressing plate 61 is subjected to a part of the downward pressure, which presses the pressing plate 61 and the heat exchange plate 60, thereby improving the transport stability of the heat exchange plate 60.

[0059] Optionally, the impact plate 31 is provided with a pressure regulating mechanism, which includes an internally threaded cylinder 80 rotatably connected to one side of the impact plate 31. The internally threaded cylinder 80 is internally threaded with a threaded block 81. A push rod 82 that penetrates the impact plate 31 is fixed on the threaded block 81. A plug plate 83 for blocking the air outlet of the one-way valve 33 is fixed at the other end of the push rod 82. An airbag ring 84 is fixed on the plug plate 83.

[0060] Furthermore, the impact plate 31 is provided with an adapter hole for the push rod 82 to pass through. The push rod 82 is a prism rod. The internal threaded cylinder 80 is rotatably set with the impact plate 31, so that the inside of the internal threaded cylinder 80 is isolated from the outside of the internal threaded cylinder 80 to maintain a seal. The airbag ring 84 provided can ensure the sealing effect of the one-way valve 33. The internal threaded cylinder 80 is located on the side close to the impact ball 36.

[0061] Specifically, when the impact ball 36 impacts the internally threaded cylinder 80, since the internally threaded cylinder 80 is integrated with the impact plate 31, the threaded block 81, push rod 82, plug plate 83, and airbag ring 84 will all move closer to the end of the hollow column 30. Because the airbag ring 84 on the plug plate 83 has a certain elasticity, when the negative pressure in the cavity on the side where the spring 32 is located compresses the spring 32 to a certain length, the airbag ring 84 will block the air outlet passage of the one-way valve 33, thereby maintaining the airflow on one side of the spring 32. The negative pressure is stable, and when the negative pressure on one side of the spring 32 weakens, the extension of the spring 32 will allow the impact plate 31 to continue to impact and compress under the force of the impact ball 36. The positions of the internal threaded cylinder 80 and the threaded block 81 are adjustable, and different positions can be set according to the needs to achieve the purpose of regulating the pressure required for transportation. Thus, under a certain negative pressure condition, the heat exchange with the outside world is reduced, and at the same time, it plays an isolation role, achieving stable temperature and humidity maintenance, which is suitable for the transportation conditions of food-grade heat exchange plates.

[0062] In this embodiment, before transporting the food-grade heat exchange plate, the heat exchange plate body 60 needs to be placed in advance. The working principle of this technical solution is as follows: the heat exchange plate body 60 is placed inside the lower assembly 10, and the liquid outlet of the heat exchange plate body 60 is fitted onto the square tube 20, and pressed by the pressing plate 61; see reference... Figure 3 Then, the upper assembly 11 is placed on the lower assembly 10, so that the lower assembly 10 and the upper assembly 11 fit together perfectly. The upper assembly 11 is as follows: Figure 8 The state shown; after the closure is completed, refer to the following... Figure 1The heat exchange plate 60 and its components are lifted using external lifting equipment. The hook of the lifting device is hooked to the hook rings on the two lifting parts 45, and then lifted using the lifting device. During the lifting process, due to the weight of the heat exchange plate 60 and its components, the lifting parts 45 and guide parts 46 will slide during the pulling process. The movable plate 41 connected to the lifting part 45 by the traction cable 44 will slide against the empty column 40, and the pulling strap 42 will be stretched. The air cavity formed between the two movable plates 41 and the empty column 40 will increase in size, allowing air in the partition 12 to enter through the extension pipe 43. The pressure in the sealed cavity formed by the lower assembly 10 and the upper assembly 11 will decrease, and air inside will enter through the vent. Inside the partition 12, under continuous lifting action, the lifting component 45 will come into contact with the limiting component 48. When the lifting component 45 contacts the insertion post 482, it is guided by the rounded corner 483. Under its action, the insertion post 482 will slide against the strip 481, which will also stretch the tension spring 485. Finally, the lifting component 45 is pulled to the upper side of the insertion post 482. Under the tension of the tension spring 485, after disengaging from the insertion post 482, the insertion post 482 will return to its original position, thereby limiting the lifting component 45 and keeping it in position. At this time, the air cavity between the movable plates 41 has the largest volume, and the sealed cavity achieves negative pressure conditions.

[0063] Under negative pressure, the square tube 20 is connected to the outside, creating a pressure difference. This causes the space formed by the movable disc 22 and the straight groove tube 21 to connect with the sealed cavity through the straight groove. The pressure difference causes the movable disc 22 inside the straight groove tube 21 to slide, and then the connecting piece 23 on the movable disc 22 causes the abutment strip 24 to abut against the liquid flow hole on the heat exchange plate 60, thereby achieving a certain degree of fixation. At the same time, the airbag 50 set on the upper assembly 11 has ventilation capacity through the air passage 51. This causes the airbag 50 to continuously expand under the pressure difference, thereby bringing the airbag 50 into contact with the heat exchange plate 60 and the pressing plate 61, thus providing protection and fixation for the heat exchange plate 60. Under negative pressure, the combination of the lower assembly 10 and the upper assembly 11 will remain tightly fitted under the pressure difference. Therefore, when loading the heat exchange plate 60, there is no need for manual fixing with bolts, greatly reducing preparation time and improving efficiency. At the same time, the complete sealing enhances the protection of the heat exchange plate 60.

[0064] Under transportation conditions, this solution needs to be placed horizontally on the vehicle. The direction of movement of the impact ball 36 needs to be the same as the direction of acceleration and deceleration. During the loading process, acceleration and deceleration are inevitable. The impact ball 36 will move inside the hollow column 30 during acceleration and deceleration or when going up or down slopes. The movement of the impact ball 36 will then impact the impact plate 31. When the impact plate 31 is impacted, the impact plate 31 moves and compresses the spring 32, and the air on the side of the space where the spring 32 is located is squeezed out through the one-way valve 33. When the impact plate 31 is released from the compression state, the elastic force of the spring 32 will cause the one-way valve 34 and the short pipe 35 to introduce air from the diaphragm 12 into the space where the spring 32 is located. When the negative pressure in the sealed cavity formed by the lower assembly 10 and the upper assembly 11 during hoisting is less than or equal to the maximum negative pressure formed in the space where the spring 32 is located, the negative pressure intensity of the sealed cavity formed by the lower assembly 10 and the upper assembly 11 weakens. It can be supplemented by the impact of the impact ball 36 to maintain the state and thus ensure the stability of the negative pressure condition.

[0065] When loading the cargo after transportation, it will be lifted by the hook of the lifting component 45. After it is placed stably, the air valve 70 is adjusted manually to make the internal pressure of the sealed cavity formed by the lower assembly 10 and the upper assembly 11 the same as the outside pressure. After the negative pressure condition is released, the various components will release the restriction and fixation on the heat exchange plate 60. Then the upper assembly 11 is removed, the pressing plate 61 is removed, and the heat exchange plate 60 is removed. The restriction on the lifting component 45 is released by pulling the plug-in column 482. Under the pulling force of the pull belt 42, the movable plate 41 returns to its position for easy use next time.

[0066] A method for transporting heat exchanger plates using a transport fixture, comprising the following steps:

[0067] Preparation before lifting: Insert the liquid outlet of the heat exchange plate 60 into the negative pressure positioning mechanism, and then seal and isolate the heat exchange plate 60 by engaging the upper assembly 11 and the lower assembly 10.

[0068] Lifting: The external lifting equipment is directly hooked to the two lifting parts 45, and then lifted directly. Through its own gravity and the use of the air extraction fixing mechanism, the closed cavity formed by the lower assembly 10 and the upper assembly 11 is evacuated, so that the lower assembly 10 and the upper assembly 11 are stably adsorbed together. Under the action of negative pressure, the negative pressure positioning mechanism abuts against the heat exchange plate 60 to keep the heat exchange plate 60 stable. The airbag 50 simultaneously wraps the heat exchange plate 60 and the pressing plate 61 to achieve a protective and buffering effect.

[0069] Road transport: The acceleration and deceleration of the vehicle during the transport process is converted into the power source of the air extraction mechanism, which intermittently extracts gas from the diaphragm 12 and maintains negative pressure in the closed cavity;

[0070] Unloading: Unload by hooking the lifting component 45. Manually operate the air valve 70 until the closed cavity is the same as the outside air pressure, disengage the lower assembly 10 and the upper assembly 11, automatically release the negative pressure positioning mechanism and the air bag 50, and directly remove the heat exchange plate 60 for installation.

[0071] The above specific embodiments are merely several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A heat exchanger plate transport fixture, characterized in that, include: The lower assembly (10) and the heat exchange plate (60) are placed inside the lower assembly (10). The upper assembly (11) that cooperates with the lower assembly (10) is staggered on the lower assembly (10) to form a sealed cavity to isolate the heat exchange plate (60). The bottom of the lower assembly (10) is provided with a partition cavity (12) and communicates with the sealed cavity. The negative pressure positioning mechanism is used to position the heat exchange plates and adaptively adjust the force according to the negative pressure conditions of the sealed cavity. The air extraction mechanism is located on one side of the lower assembly (10). It uses the power converted from the acceleration and deceleration during the transport of the vehicle as the source to achieve air extraction and create negative pressure in the sealed cavity. The air extraction and fixing mechanism is fixed at the bottom of the lower assembly (10). It uses its own weight to extract the gas in the sealed cavity when it is lifted from the outside, causing the sealed cavity to be under negative pressure. The pressure difference is used to tightly attach the lower assembly (10) and the upper assembly (11). The air extraction and fixing mechanism includes a hollow column (40) fixed to the lower side of the lower assembly (10). Two movable plates (41) are slidably arranged on the inner side of the hollow column (40). An air cavity is formed between the two movable plates (41) and the hollow column (40), and a pull strap (42) is provided to connect the two movable plates (41). An extension tube (43) communicating with the partition (12) and fixed to the lower assembly (10) is fixed on the upper side of the hollow column (40). A traction cable (44) extending to the outside of the hollow column (40) is fixed on the side of the pull strap (42) away from each other. A lifting member (45) for hoisting is fixed at the free end of the traction cable (44). The lifting member (45) slides on the lower assembly (10) through a guide (46) fixed on the lower assembly (10). A limiting component (48) for locking the movement position of the lifting member (45) is fixed on the lower assembly (10). The upper side of the heat exchange plate (60) is provided with a pressing plate (61) adapted to the heat exchange plate (60). The upper assembly (11) is provided with an airbag (50) located around the heat exchange plate (60) to expand and squeeze the pressing plate (61) when the sealed cavity is under negative pressure, so that the heat exchange plate (60) remains stable. The upper side of the airbag (50) is provided with an air passage (51) communicating with the outside. The upper assembly (11) is provided with an air port on its upper side that corresponds to the position of the square tube (20) and connects the square tube (20) to the outside. The upper assembly (11) is provided with two handles on its outer side. The lower assembly (10) is fixed with a regulating air valve (70) for manually adjusting the pressure balance inside and outside the diaphragm (12).

2. The heat exchanger plate transport fixture according to claim 1, characterized in that: The lower assembly (10) is provided with a pad (13) located on the lower side of the heat exchange plate (60). The pad (13) is adapted to fit the heat exchange plate (60). The cavity (12) is provided with air holes located on both sides of the pad (13).

3. The heat exchanger plate transport fixture according to claim 2, characterized in that: The negative pressure positioning mechanism includes a square tube (20) fixed on the lower assembly (10) for inserting the liquid outlet of the heat exchange plate (60). A straight groove tube (21) is provided on the inner side of the square tube (20). A movable disc (22) is slidably provided on the inner side of the straight groove tube (21). A connecting piece (23) that penetrates the square tube (20) is fixed on the movable disc (22). An abutting strip (24) for abutting the heat exchange plate (60) is fixed at the other end of the connecting piece (23). A straight groove for the connecting piece (23) to pass through and be ventilated is provided on the square tube (20).

4. The heat exchanger plate transport fixture according to claim 3, characterized in that: The air extraction mechanism includes a hollow column (30) fixed to one side of the lower assembly (10). Two impact plates (31) are slidably arranged inside the hollow column (30). The two impact plates (31) are fixed to the inner wall of the hollow column (30) by springs (32) on the side away from each other. One-way valves (33) for venting outward are provided at both ends of the hollow column (30). One-way valves (34) for venting into the hollow column (30) are provided at the end of the hollow column (30) for venting into the hollow column (30) when the impact plates (31) are close together. One-way valves (34) are connected to the partition (12) through a short pipe (35) and fixed to the lower assembly (10). An impact ball (36) is provided between the two impact plates (31) and moves freely inside the hollow column (30) to vent the gas inside the hollow column (30) when it impacts the impact plates (31).

5. The heat exchanger plate transport fixture according to claim 1, characterized in that: Each of the limiting components (48) includes two strips (481) fixed to the lower assembly (10), with a through-hole post (482) provided on the strip (481), the end of the through-hole post (482) near the guide (46) having a rounded corner (483), the other end of the through-hole post (482) having a disc (484) fixed to it, and a tension spring (485) fixed between the disc (484) and the strip (481).

6. The heat exchanger plate transport fixture according to claim 4, characterized in that: A pressure regulating mechanism is provided on any of the impact plates (31). The pressure regulating mechanism includes an internally threaded cylinder (80) rotatably connected to one side of the impact plate (31). A threaded block (81) is threadedly connected inside the internally threaded cylinder (80). A push rod (82) penetrating the impact plate (31) is fixed on the threaded block (81). A plug plate (83) for sealing the air outlet is fixed at the other end of the push rod (82). An airbag ring (84) is fixed on the plug plate (83).

7. A method for transporting heat exchanger plates based on the transport fixture for heat exchanger plates according to any one of claims 1-6, characterized in that, Includes the following steps: Preparation before lifting: Insert the liquid outlet of the heat exchange plate (60) into the negative pressure positioning mechanism, and then use the upper assembly (11) and the lower assembly (10) to form a fastening to seal and isolate the heat exchange plate (60); Lifting: Hook the external lifting equipment directly to the two lifting parts (45), and then lift directly. By its own gravity and by using the air extraction fixing mechanism, the sealed cavity composed of the lower assembly (10) and the upper assembly (11) is evacuated, so that the lower assembly (10) and the upper assembly (11) are stably adsorbed together. The negative pressure positioning mechanism abuts against the heat exchange plate (60) under the negative pressure to keep the heat exchange plate (60) stable. The airbag (50) simultaneously wraps the heat exchange plate (60) and the pressing plate (61) to achieve a protective buffering effect. Road transport: The acceleration and deceleration of the vehicle during the transport process is converted into the power source of the air extraction mechanism, which intermittently extracts gas from the diaphragm (12) and maintains negative pressure in the sealed cavity; Unloading: Unload by hooking the lifting part (45), manually operate the adjusting air valve (70) until the sealed cavity is the same as the outside air pressure, disengage the lower assembly (10) and the upper assembly (11) combination relationship, automatically release the negative pressure positioning mechanism and the air bag (50) function, and directly remove the heat exchange plate (60) for installation.

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