Turbine expander capable of reducing air inlet temperature

Abstract

The utility model relates to the technical field of turbo expanders, in particular to a turbo expander capable of reducing air inlet temperature, which enables a first heat exchange box to be more convenient to disassemble and assemble, when maintenance is needed, the first heat exchange box is convenient to disassemble and assemble, the maintenance efficiency is effectively improved, and the practicability is improved. Comprising an air inlet and a first heat exchange box, a right connecting table communicates with the input end of the air inlet and is fixedly arranged on the air inlet, a butt joint groove is formed in the left end of the right connecting table, the right end of the first heat exchange box fixedly communicates with a left connecting table, and a butt joint table is fixedly arranged at the right end of the left connecting table; the upper buckling cover and the lower buckling cover are provided with arc-shaped sealing grooves, the right connecting table and the left connecting table are sleeved with the upper buckling cover and the lower buckling cover through matching of the arc-shaped sealing grooves, fixing bolts are inserted into the two sets of lug plates through matching of bolt holes, the fixing bolts are sleeved with lock nuts in a screwed mode, and the bottom ends of the lock nuts make close contact with the top ends of the lug plates on the upper buckling cover.

Description

Technical Field

[0001] The utility model relates to the technical field of turboexpanders, in particular to a turboexpander capable of reducing the intake air temperature. Background Art

[0002] A turboexpander is a key component necessary for obtaining cold energy in air separation equipment, natural gas (petroleum gas) liquefaction separation equipment, cryogenic comminution equipment, etc. It is the heart that ensures the stable operation of the entire set of equipment. Its main principle is to input a gas with a certain pressure into the volute interior, enabling the pressurized gas to adiabatically expand inside the turboexpander to do external work and consume the internal energy of the gas itself, thereby rapidly cooling the gas to achieve the refrigeration function. During actual use, the expansion chamber of the turboexpander, that is, the temperature of the cold box is relatively low, and frosting may occur outside the cold box, resulting in the dissipation of cold energy. At the same time, the intake air temperature of the existing turboexpander cannot be regulated. If the temperature entering the interior of the turboexpander is too high, it will affect the subsequent cooling effect of the turboexpander on the pressurized gas.

[0003] In view of the defects that the existing turboexpander cannot effectively utilize the cold energy dissipated at the cold box and cannot effectively regulate the intake air temperature, the patent publication number CN220849786U discloses a turboexpander capable of reducing the intake air temperature, including a turboexpander body with an intake port and a cold box. A first heat exchange part is arranged at the intake port, and a second heat exchange part is arranged outside the cold box; inside the first heat exchange part, there is a heat exchange air passage communicating with the intake port and a first heat exchange flow passage for heat exchange with the heat exchange air passage. Inside the second heat exchange part, there is a second heat exchange flow passage. A circulating water tank is arranged between the first heat exchange flow passage and the second heat exchange flow passage. The first heat exchange flow passage and the second heat exchange flow passage are both connected to the circulating water tank through connecting pipelines. A circulating water pump connected to the connecting pipelines is arranged inside the circulating water tank. It pre-cools the gas entering the volute interior of the turboexpander by using the cold energy dissipated from the cold box of the turboexpander, avoiding the influence of too high intake air temperature on the expansion refrigeration effect of the turboexpander.

[0004] There are some drawbacks to the above patent. When the first heat exchange box is connected to the intake port on the turboexpander, a multi-bolt connection method is used. When disassembling and assembling, it is necessary to repeatedly disassemble and assemble multiple bolts, making the disassembly and assembly of the first heat exchange box relatively troublesome. When maintenance is required, the first heat exchange box is inconvenient to disassemble and assemble, which will affect the maintenance efficiency and the practicality is insufficient. Summary of the Utility Model

[0005] To solve the above technical problems, the utility model provides a turboexpander capable of reducing the intake air temperature, which can make the disassembly and assembly of the first heat exchange box more convenient. When maintenance is required, the first heat exchange box is convenient to disassemble and assemble, effectively improving the maintenance efficiency and enhancing the practicality.

[0006] Technical solution

[0007] To achieve the above object, the utility model provides the following technical solution: A turbine expander capable of reducing the intake air temperature, comprising an air inlet, a first heat exchange box, a docking structure and a ferrule mechanism. The docking structure includes a right connecting platform, which is fixedly arranged on the air inlet and communicated with the input end of the air inlet. A docking groove is provided at the left end of the right connecting platform. The right end of the first heat exchange box is fixedly communicated with a left connecting platform, and a docking platform is fixedly provided at the right end of the left connecting platform. The first heat exchange box is docked on the air inlet through the cooperation of the docking platform and the docking groove. The right end of the left connecting platform contacts the left end of the right connecting platform. The ferrule mechanism includes an upper buckle cover and a lower buckle cover. A connecting shaft is fixedly provided at the left end of the upper buckle cover, and supports are fixedly provided symmetrically before and after at the left end of the lower buckle cover. The upper buckle cover is rotatably covered on the lower buckle cover through the cooperation of the upper buckle cover and the supports. Arc-shaped sealing grooves are provided on the upper buckle cover and the lower buckle cover. The upper buckle cover and the lower buckle cover are sleeved on the right connecting platform and the left connecting platform through the cooperation of the arc-shaped sealing grooves. Ear plates are integrally and fixedly provided at the right ends of the upper buckle cover and the lower buckle cover. Bolt holes are provided on both groups of ear plates. Fixed bolts are inserted through the cooperation of the bolt holes on both groups of ear plates. A lock nut is screwed on the fixed bolt, and the bottom end of the lock nut is in close contact with the top end of the ear plate on the upper buckle cover.

[0008] Preferably, U-shaped gaskets are arranged in the arc-shaped sealing grooves of the upper buckle cover and the lower buckle cover, and a sealing washer is arranged inside the docking groove.

[0009] Preferably, handles are fixedly provided on the outer walls of the upper buckle cover and the lower buckle cover.

[0010] Preferably, anti-slip grips are fixedly sleeved on both groups of handles.

[0011] Preferably, spring washers are sleeved on the fixed bolts.

[0012] Compared with the prior art, the beneficial effect of the utility model is as follows: During installation, insert the docking platform into the docking groove to dock the right connecting platform and the left connecting platform together. Then, put the upper buckle cover and the lower buckle cover on the right connecting platform and the left connecting platform, so that the right connecting platform and the left connecting platform are in close contact with the arc-shaped sealing grooves. Then, insert the fixed bolts into the ear plates, screw the lock nuts onto the fixed bolts and tighten them, so that the bottom end of the lock nut presses tightly on the top end of the ear plate on the upper buckle cover, thereby firmly docking the right connecting platform and the left connecting platform together to complete the docking of the first heat exchange box and the air inlet. During disassembly, just unscrew the lock nuts, then pull out the fixed bolts from the ear plates, and then rotate and open the upper buckle cover and the lower buckle cover, and remove them from the right connecting platform and the left connecting platform, then the first heat exchange box can be disassembled from the air inlet. This greatly reduces the amount of bolts, making the docking and disassembly of the first heat exchange box and the air inlet more convenient. When maintenance is required, the first heat exchange box is easy to disassemble and assemble, effectively improving the maintenance efficiency and enhancing the practicability. Brief Description of the Drawings

[0013] Figure 1 is an isometric structural view of the present utility model;

[0014] Figure 2 is a right-side isometric structural view of the first heat exchange box in the present utility model;

[0015] Figure 3 is an isometric structural view of the air inlet in the present utility model;

[0016] Figure 4 is an isometric structural view of the ferrule mechanism in the present utility model;

[0017] Figure 5 is the present utility model Figure 4 's left-side isometric structural view;

[0018] Figure 6 is an isometric exploded structural view of the ferrule mechanism in the present utility model;

[0019] Figure 7 is a bottom isometric structural view of the upper fastening cover in the present utility model;

[0020] Reference numerals in the drawings: 1, air inlet; 2, first heat exchange box; 3, right connecting platform; 4, docking groove; 5, left connecting platform; 6, docking platform; 7, upper fastening cover; 8, lower fastening cover; 9, connecting shaft; 10, support; 11, ear plate; 12, fixing bolt; 13, lock nut; 14, U-shaped sealing gasket; 15, handle; 16, anti-slip grip sleeve; 17, sealing washer; 18, spring washer. Detailed Description of the Preferred Embodiments

[0021] The following further describes in detail the specific embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model but are not intended to limit the scope of the present utility model.

[0022] Embodiment

[0023] Please refer to Figures 1-7, a turbine expander capable of reducing the intake air temperature according to the present utility model, includes an air inlet 1 and a first heat exchange box 2. A right connecting platform 3 is fixedly arranged on the air inlet 1 and communicated with the input end of the air inlet 1. A docking groove 4 is provided at the left end of the right connecting platform 3. The right end of the first heat exchange box 2 is fixedly communicated with a left connecting platform 5. A docking platform 6 is fixedly provided at the right end of the left connecting platform 5. The first heat exchange box 2 is docked on the air inlet 1 through the cooperation of the docking platform 6 and the docking groove 4. The right end of the left connecting platform 5 contacts the left end of the right connecting platform 3. A connecting shaft 9 is fixedly provided at the left end of the upper cover 7. Supports 10 are fixedly provided symmetrically before and after at the left end of the lower cover 8. The upper cover 7 is rotatably covered on the lower cover 8 through the cooperation of the upper cover 7 and the supports 10. Arc-shaped sealing grooves are provided on the upper cover 7 and the lower cover 8. The upper cover 7 and the lower cover 8 are sleeved on the right connecting platform 3 and the left connecting platform 5 through the cooperation of the arc-shaped sealing grooves. Ear plates 11 are integrally and fixedly provided at the right ends of the upper cover 7 and the lower cover 8. Bolt holes are provided on the two groups of ear plates 11. Fixing bolts 12 are inserted through the cooperation of the bolt holes on the two groups of ear plates 11. A lock nut 13 is screwed on the fixing bolt 12. The bottom end of the lock nut 13 is in close contact with the top end of the ear plate 11 on the upper cover 7. During installation, insert the docking platform 6 into the docking groove 4 to dock the right connecting platform 3 and the left connecting platform 5 together. Then, put the upper cover 7 and the lower cover 8 on the right connecting platform 3 and the left connecting platform 5 so that the right connecting platform 3 and the left connecting platform 5 are in close contact with the arc-shaped sealing grooves. Then, insert the fixing bolts 12 into the ear plates 11, screw the lock nuts 13 onto the fixing bolts 12 and tighten them so that the bottom end of the lock nut 13 presses against the top end of the ear plate 11 on the upper cover 7, thereby stably docking the right connecting platform 3 and the left connecting platform 5 together and completing the docking of the first heat exchange box 2 and the air inlet 1. During disassembly, just unscrew the lock nuts 13, then pull out the fixing bolts 12 from the ear plates 11, and then rotate and open the upper cover 7 and the lower cover 8 and remove them from the right connecting platform 3 and the left connecting platform 5, and the first heat exchange box 2 can be disassembled from the air inlet 1. This greatly reduces the amount of bolts, making the docking and disassembly of the first heat exchange box 2 and the air inlet 1 more convenient. It can make the disassembly and assembly of the first heat exchange box more convenient. When maintenance is required, the first heat exchange box is easy to disassemble and assemble, effectively improving the maintenance efficiency and enhancing the practicality.

[0024] U-shaped sealing gaskets 14 are arranged in the arc-shaped sealing grooves of the upper cover 7 and the lower cover 8, and a sealing washer 17 is arranged inside the docking groove 4. By providing the U-shaped sealing gaskets 14 and the sealing washer 17, the first heat exchange box 2 and the air inlet 1 can be more closely docked and installed, improving the sealing performance and preventing leakage.

[0025] Handles 15 are fixedly provided on the outer walls of the upper cover 7 and the lower cover 8. By providing the handles 15, one can hold the handles 15 to open and close the upper cover 7 and the lower cover 8, making it more convenient to open and close the upper cover 7 and the lower cover 8.

[0026] Anti-slip grips 16 are fixedly sleeved on both groups of the grips 15; by providing the anti-slip grips 16, it is not easy to slip when holding the grips 15 for operation.

[0027] A spring washer 18 is sleeved on the fixing bolt 12; by providing the spring washer 18, it can be more secure after the lock nut 13 is tightened, effectively preventing the lock nut 13 from loosening.

[0028] For a turboexpander capable of reducing the intake air temperature according to the present utility model, in terms of its working principle, during installation, the docking platform 6 is inserted into the docking groove 4 to dock the right connecting platform 3 and the left connecting platform 5 together. Then, the upper cover 7 and the lower cover 8 are sleeved on the right connecting platform 3 and the left connecting platform 5, making the right connecting platform 3 and the left connecting platform 5 in close contact with the arc-shaped sealing groove. Then, the fixing bolt 12 is inserted into the ear plate 11, the spring washer 18 is sleeved on, and the lock nut 13 is screwed onto the fixing bolt 12 and tightened, so that the bottom end of the lock nut 13 presses against the top end of the ear plate 11 on the upper cover 7, thereby stably docking the right connecting platform 3 and the left connecting platform 5 together to complete the docking of the first heat exchange box 2 and the air inlet 1. During disassembly, only need to unscrew the lock nut 13, then pull out the fixing bolt 12 from the ear plate 11, and then rotate and open the upper cover 7 and the lower cover 8, and remove them from the right connecting platform 3 and the left connecting platform 5, then the first heat exchange box 2 can be disassembled from the air inlet 1, greatly reducing the amount of bolts used, thus making the docking and disassembly of the first heat exchange box 2 and the air inlet 1 more convenient.

[0029] For a turboexpander capable of reducing the intake air temperature according to the present utility model, its installation method, connection method or setting method are all common mechanical methods, and any implementation that can achieve its beneficial effects can be carried out; the air inlet and the first heat exchange box in the present utility model are both cited from a turboexpander capable of reducing the intake air temperature with the patent publication number CN220849786U, which belongs to the prior art. For the rest of the specific structures and principles, detailed descriptions have been given in the published patent, so no more elaboration will be made here.

[0030] The above is only the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A turboexpander capable of reducing the intake air temperature, comprising an air inlet (1) and a first heat exchange box (2), characterized in that, It also includes a docking structure and a ferrule mechanism; The docking structure includes a right connecting platform (3). The right connecting platform (3) is fixedly arranged on the air inlet (1) and communicated with the input end of the air inlet (1). A docking groove (4) is provided at the left end of the right connecting platform (3). The right end of the first heat exchange box (2) is fixedly communicated with a left connecting platform (5). A docking platform (6) is fixedly provided at the right end of the left connecting platform (5). The first heat exchange box (2) is docked on the air inlet (1) through the cooperation of the docking platform (6) and the docking groove (4). The right end of the left connecting platform (5) is in contact with the left end of the right connecting platform (3); The ferrule mechanism includes an upper ferrule cover (7) and a lower ferrule cover (8). A connecting shaft (9) is fixedly provided at the left end of the upper ferrule cover (7). Supports (10) are fixedly provided symmetrically before and after at the left end of the lower ferrule cover (8). The upper ferrule cover (7) is rotatably covered on the lower ferrule cover (8) through the cooperation of the upper ferrule cover (7) and the supports (10). Arc-shaped sealing grooves are provided on the upper ferrule cover (7) and the lower ferrule cover (8). The upper ferrule cover (7) and the lower ferrule cover (8) are sleeved on the right connecting platform (3) and the left connecting platform (5) through the cooperation of the arc-shaped sealing grooves. Lugs (11) are integrally and fixedly provided at the right ends of the upper ferrule cover (7) and the lower ferrule cover (8). Bolt holes are provided on both groups of lugs (11). Fixing bolts (12) are inserted through the cooperation of the bolt holes on both groups of lugs (11). A lock nut (13) is screwed and sleeved on the fixing bolt (12). The bottom end of the lock nut (13) is in close contact with the top end of the lug (11) on the upper ferrule cover (7).

2. The turbine expander capable of reducing the intake air temperature according to claim 1, wherein U-shaped sealing gaskets (14) are arranged in the arc-shaped sealing grooves of the upper ferrule cover (7) and the lower ferrule cover (8), and a sealing washer (17) is arranged inside the docking groove (4).

3. The turbine expander capable of reducing the intake air temperature according to claim 2, wherein, Handles (15) are fixedly provided on the outer walls of the upper ferrule cover (7) and the lower ferrule cover (8).

4. A turbine expander capable of reducing the intake air temperature as claimed in claim 3, wherein Anti-slip handle sleeves (16) are fixedly sleeved on both groups of handles (15).

5. The turbine expander capable of reducing the intake air temperature according to claim 4, characterized in that, Spring washers (18) are sleeved on the fixing bolts (12).

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