Air-cooled high-temperature-resistant terminal block

Abstract

The utility model provides a kind of air-cooled high-temperature-resistant wiring bin, belong to underground electric heater technical field, including the sleeve pipe of vertical setting, sleeve pipe is equipped with bin body, vertical gas injection pipeline is equipped in bin body, several vertical cables are arranged with gas injection pipeline as center circle in bin body, bin body is equipped with refrigeration assembly and heating assembly, the utility model provides a kind of air-cooled high-temperature-resistant wiring bin, and the refrigeration assembly of being set, when the environmental temperature used by cable is higher, the problem that cable will be due to external temperature is too high and appears power transmission efficiency is influenced is solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of downhole electric heaters, specifically relating to an air-cooled high-temperature resistant wiring compartment. Background Technology

[0002] A cable is a rope-like cable made of several or several groups of conductors twisted together. Each group of conductors has at least two conductors, and each group of conductors is insulated from each other. They are often twisted around a central core and the entire cable is covered with a highly insulating outer layer. Cables are characterized by being internally energized and externally insulated. Depending on their function, cables can be classified as power cables, control cables, compensating cables, shielded cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, and so on.

[0003] In-situ extraction of unconventional energy sources such as oil-rich coal, oil shale, heavy oil, and viscous oil often requires in-situ heating with downhole electric heaters. However, when the cables in the wiring compartment of the downhole electric heater are exposed to high ambient temperatures, their power transmission efficiency may be affected due to excessive external temperatures. Therefore, a wiring compartment that can dissipate heat and cool the cables is needed. Utility Model Content

[0004] To achieve the above objectives, this utility model provides an air-cooled high-temperature resistant wiring compartment, including a vertically arranged sleeve, a compartment body inside the sleeve, an air injection pipe vertically arranged inside the compartment body, several vertical cables arranged around the air injection pipe as the center of the compartment body, and a cooling component and a heating component inside the compartment body.

[0005] Furthermore, the housing includes a vertically arranged wiring compartment shell, with a wiring compartment upper cover plate fixedly connected to the upper end of the wiring compartment shell and a wiring compartment lower cover plate fixedly connected to the lower end of the wiring compartment shell. A vertical refrigeration chamber shell is fixedly connected to the upper side of the upper cover plate, and a refrigeration chamber cover plate is fixedly connected to the upper end of the refrigeration chamber shell. The refrigeration component is located inside the refrigeration chamber shell. The bottom of the lower cover plate is fixedly connected to a vertical heating chamber shell, and the heating component is located inside the heating chamber shell; The upper cover plate of the wiring compartment, the lower cover plate of the wiring compartment, and the cover plate of the refrigeration compartment are respectively fixedly sleeved on the gas injection pipe.

[0006] Furthermore, the gas injection pipeline includes an upper gas injection pipe, a middle gas injection pipe, and a lower gas injection pipe connected sequentially from top to bottom; The lower end of the gas injection pipe passes vertically through the lower cover of the wiring compartment, the upper end of the gas injection pipe passes vertically through the upper cover of the wiring compartment and is fixedly connected to the middle gas injection pipe, and the upper end of the middle gas injection pipe passes vertically through the cover of the refrigeration compartment and is fixedly connected to the upper gas injection pipe.

[0007] Furthermore, the refrigeration assembly includes several upper air guide pipes arranged circumferentially around the central air injection pipe. The several upper air guide pipes and several cables are arranged sequentially at intervals. The upper air guide pipes are located inside the refrigeration chamber shell. One end of the upper air guide pipe is fixedly connected to the central air injection pipe, and the other end is fixedly connected to an electric control valve. The bottom of the electric control valve is fixedly connected to the central air guide pipe. The lower end of the central air guide pipe is fixedly connected to a rectifier chamber. The bottom of the rectifier chamber is fixedly connected to a lower air guide pipe. The lower end of the lower air guide pipe is provided with a cooler. It also includes a first heat exchanger and a second heat exchanger. The first heat exchanger is located inside the upper gas injection pipe. The upper end of the first heat exchanger is fixedly connected to an upper collecting chamber. The upper end of the upper collecting chamber extends outward through the upper exhaust pipe and is fixedly connected to an upper exhaust pipe. The lower end of the first heat exchanger is fixedly connected to a lower collecting chamber, which is connected to the cooler. The second heat exchanger is located inside the wiring compartment housing and is connected to the refrigerator.

[0008] Furthermore, the refrigerator includes a refrigeration housing, the top of which is fixedly connected to the lower air guide pipe, a hot air outlet pipe is provided above the refrigeration housing, a central pipe is vertically provided in the middle of the refrigeration housing, the upper end of the central pipe passes through the top of the refrigeration housing and is fixedly connected to one end of the hot air outlet pipe, and the other end of the hot air outlet pipe passes outward through the refrigeration housing and is fixedly connected to a manifold valve. A generator is fixedly connected to the bottom of the refrigeration chamber shell, and a rectifier is fixedly connected to the center of the bottom of the generator. The upper end of the rectifier is fixedly connected to the lower end of the central tube, and the lower end of the rectifier passes through the top cover of the wiring compartment and is fixedly connected to the upper end of the second heat exchanger. The lower end of the second heat exchanger is fixedly connected to a lower exhaust pipe, which is fixedly connected to the manifold valve. A vertical middle exhaust pipe is fixedly connected to the upper side of the manifold valve, and the upper end of the middle exhaust pipe passes through the upper air injection pipe and is fixedly connected to the lower collecting cavity.

[0009] Furthermore, a spiral plate is provided inside the refrigeration housing, and the spiral plate is fixedly sleeved on the central tube.

[0010] Furthermore, a support is fixedly connected to the bottom corner of the generator, the support is fixed to the upper cover of the wiring compartment, and an insulation layer is fixedly connected inside the support, the insulation layer is fixedly sleeved on the rectifier.

[0011] Furthermore, the heating assembly includes a plurality of heating rods corresponding one-to-one with the cable, the heating rods passing vertically through the lower cover plate and being fixedly connected to the lower cover plate, and the heating rods being electrically connected to the cable.

[0012] Furthermore, each of the cables is fixedly fitted with a sealing joint at both ends, and the two sealing joints are respectively fixed to the top cover of the wiring compartment and the top cover of the refrigeration compartment.

[0013] Furthermore, a lower flange is fixedly fitted onto the upper end of the sleeve, and an upper flange is provided on the upper side of the lower flange; The upper ends of the cable and the gas injection pipe pass through the chamber and the upper flange in sequence, and the upper flange is fixedly sleeved on the gas injection pipe.

[0014] The advantages of this utility model are: This utility model provides an air-cooled high-temperature resistant junction box, which solves the problem that the power transmission efficiency of the cable will be affected when the ambient temperature of the cable is high.

[0015] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of this utility model.

[0018] Figure 3 This is an enlarged view of the structure at point A of this utility model.

[0019] Figure 4 This is a top-view cross-sectional view of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Sleeve; 2. Chamber body; 21. Wiring chamber housing; 22. Wiring chamber upper cover; 23. Wiring chamber lower cover; 24. Refrigeration chamber housing; 25. Refrigeration chamber cover; 26. Heating chamber housing; 3. Gas injection pipe; 31. Upper gas injection pipe; 32. Middle gas injection pipe; 33. Lower gas injection pipe; 4. Cable; 5. Refrigeration assembly; 51. Upper gas guide pipe; 52. Electrically controlled valve; 53. Middle gas guide pipe; 54. Rectifying chamber; 55. Lower gas guide pipe; 56. Refrigerator; 1. Refrigeration housing; 562. Hot exhaust pipe; 563. Central pipe; 564. Manifold valve; 565. Generator; 566. Rectifier; 567. Lower exhaust pipe; 568. Middle exhaust pipe; 569. Spiral plate; 57. First heat exchanger; 58. Second heat exchanger; 59. Upper collecting chamber; 510. Upper exhaust pipe; 511. Lower collecting chamber; 6. Heating assembly; 61. Heating rod; 7. Support; 8. Insulation layer; 9. Sealing joint; 10. Lower flange; 11. Upper flange. Detailed Implementation

[0021] To further illustrate the technical means and effects of this utility model in achieving its intended purpose, the specific implementation methods, structural features and effects of this utility model are described in detail below with reference to the accompanying drawings and embodiments.

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "aligned", "overlapping", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] Example 1

[0026] This embodiment provides, for example Figures 1-4 The illustration shows an air-cooled high-temperature resistant wiring compartment, comprising a vertically arranged sleeve 1, a compartment body 2 inside the sleeve 1, an air injection pipe 3 vertically arranged inside the compartment body 2, and several vertical cables 4 arranged circumferentially around the air injection pipe 3 inside the compartment body 2, wherein the number of cables 4 is preferably three. The compartment body 2 includes a vertically arranged wiring compartment shell 21, an upper cover plate 22 fixedly connected to the upper end of the wiring compartment shell 21, and a lower cover plate 23 fixedly connected to the lower end of the wiring compartment shell 21. A vertical cooling compartment shell 24 is fixedly connected to the upper side of the upper cover plate, and the cooling compartment shell 24 is used to seal the cooling compartment. A cooling compartment cover plate 25 is fixedly connected to the upper end of the cooling compartment shell 24, and the cooling compartment cover plate 25 is used to seal the cooling compartment. A cooling component 5 is located inside the cooling compartment shell 24. A vertical heating compartment shell 26 is fixedly connected to the bottom of the lower cover plate. The upper cover plate 22 of the wiring compartment, the lower cover plate 23 of the wiring compartment, and the cover plate 25 of the refrigeration compartment are respectively fixedly sleeved on the gas injection pipe 3. The gas injection pipe 3 includes an upper gas injection pipe 31, a middle gas injection pipe 32, and a lower gas injection pipe 33 connected sequentially from top to bottom. The upper gas injection pipe 31 is used to inject gas, and the middle gas injection pipe 32 is used to transport the injected gas. The lower end of the lower gas injection pipe 33 passes vertically through the lower cover plate 23 of the wiring compartment, and the upper end of the lower gas injection pipe 33 passes vertically through the upper cover plate 22 of the wiring compartment and is fixedly connected to the middle gas injection pipe 32. The upper end of the middle gas injection pipe 32 passes vertically through the cover plate 25 of the refrigeration compartment and is fixedly connected to the upper gas injection pipe 31. The chamber 2 is equipped with a cooling component 5 and a heating component 6. The heating component 6 is located inside the heating chamber shell 26. The heating component 6 includes several heating rods 61 that correspond one-to-one with the cables 4. The heating rods 61 pass vertically through the lower cover plate and are fixedly connected to the lower cover plate. The heating rods 61 are electrically connected to the cables 4. The cables 4 are used to supply power to the heating rods 61. The refrigeration assembly 5 includes several upper gas guide pipes 51 arranged circumferentially around the central gas injection pipe 32. These upper gas guide pipes 51 are sequentially spaced from several cables 4. Preferably, there are three upper gas guide pipes 51 located inside the refrigeration chamber shell 24. One end of each upper gas guide pipe 51 is fixedly connected to the central gas injection pipe 32, and the other end is fixedly connected to an electric control valve 52. The upper gas guide pipe 51 diverts gas from the central gas injection pipe 32 to the electric control valve 52. The electric control valve 52 diverts gas from the central gas injection pipe 32 and controls the flow rate of the diverted gas. A central gas guide pipe 53 is fixedly connected to the bottom of the electric control valve 52. A rectifier chamber 54 is fixedly connected to the lower end of the central gas guide pipe 53. The rectifier chamber 54 serves to buffer and stabilize the flow. A lower gas guide pipe 55 is fixedly connected to the bottom of the rectifier chamber 54. A cooler 56 is located at the lower end of the lower gas guide pipe 55. Its function is to guide the gas to the annular space between the refrigeration housing 561 and the central tube 563; it also includes a first heat exchanger 57 and a second heat exchanger 58. The first heat exchanger 57 is located inside the upper gas injection pipe 31. The upper end of the first heat exchanger 57 is fixedly connected to the upper collecting cavity 59. The upper collecting cavity 59 is used to collect the gas discharged from the first heat exchanger 57, which plays a role in buffering and stabilizing the flow. The upper end of the upper collecting cavity 59 extends outward through the upper exhaust pipe 510 and is fixedly connected to the upper exhaust pipe 510. The lower end of the first heat exchanger 57 is fixedly connected to the lower collecting cavity 511. The lower collecting cavity 511 is connected to the refrigeration unit 56. The lower collecting cavity 511 is used to collect the gas in the central exhaust pipe 568, which plays a role in buffering and stabilizing the flow. The lower collecting cavity 511 has an annular cavity structure; the second heat exchanger 58 is located inside the wiring compartment housing 21 and is connected to the refrigeration unit 56; The refrigerator 56 includes a refrigerator housing 561. The top of the refrigerator housing 561 is fixedly connected to the lower gas guide pipe 55. A hot gas outlet pipe 562 is provided above the refrigerator housing 561. A central pipe 563 is vertically provided in the middle of the refrigerator housing 561. The upper end of the central pipe 563 passes through the top of the refrigerator housing 561 and is fixedly connected to one end of the hot gas outlet pipe 562. The other end of the hot gas outlet pipe 562 passes outward through the refrigerator compartment housing 24 and is fixedly connected to a manifold valve 564. The function of the manifold valve 564 is to combine the gas discharged from the hot gas outlet pipe 562 of the refrigerator 56 and the gas discharged from the second heat exchanger 58 and then transport it to the central exhaust pipe 568. The function of the hot gas outlet pipe 562 is to transport the gas from the upper outlet of the central pipe 563 of the refrigerator 56 to the manifold valve 568. A flow valve 564; a generator 565 is fixedly connected to the bottom of the refrigeration chamber shell 24, and a rectifier 566 is fixedly connected to the center of the bottom of the generator 565. The upper end of the rectifier 566 is fixedly connected to the lower end of the central tube 563, and the lower end of the rectifier 566 passes through the upper cover plate 22 of the wiring compartment and is fixedly connected to the upper end of the second heat exchanger 58. The rectifier 566 is used to make the circumferential velocity of the airflow change to zero in a short distance, thereby improving the cooling effect; a lower exhaust pipe 567 is fixedly connected to the lower end of the second heat exchanger 58, and the lower exhaust pipe 567 is fixedly connected to the manifold valve 564. A vertical middle exhaust pipe 568 is fixedly connected to the upper side of the manifold valve 564, and the upper end of the middle exhaust pipe 568 passes through the upper air injection pipe 31 and is fixedly connected to the lower collecting chamber 511.

[0027] In use, gas is first injected from the upper gas injection pipe 31, the injected gas flows through the middle gas injection pipe 32 and the lower gas injection pipe 33, and then injected into the heater assembly downhole; When the gas flow is delivered into the middle gas injection pipe 32, a portion of the gas flows through the upper gas guide pipe 51, the electronic control valve 52, the middle gas guide pipe 53, the rectifier chamber 54 and the lower gas guide pipe 55, and then flows into the space between the cooling housing 561 and the central pipe 563. After flowing through the generator 565, the gas input into the generator 565 is separated into two gas flows, one hot and one cold. The operation of the central pipe is similar to the principle of a turbine tube. The hot gas flows out from the upper part of the central pipe 563 and the cold gas flows out from the lower part of the central pipe 563. The hot gas at generator 565 is discharged upward from hot gas outlet pipe 562 to manifold valve 564. The flow channel of generator 565 is an Archimedes flow channel, which has a good cooling effect. The cold gas at generator 565 flows into the second heat exchanger 58 through rectifier 566, then flows into the lower exhaust pipe 567 from the second heat exchanger 58, then through the manifold valve 564 from the lower exhaust pipe 567, and together with the gas discharged from the hot exhaust pipe 562 to the manifold valve 564, flows through the middle exhaust pipe 568, then through the lower collecting chamber 511, the first heat exchanger 57, and the upper collecting chamber 59, and then is discharged to the ground through the upper exhaust pipe 510; The first heat exchanger 57 is used to absorb the high-temperature gas in the lower exhaust pipe 567 by injecting low-temperature atmospheric gas, thereby enhancing the overall energy utilization rate of the heater. The upper exhaust pipe 510 is used to discharge the gas to the ground. The upper exhaust pipe 510 is connected to a vacuum pump to enhance the exhaust capacity of the upper exhaust pipe 510. The cooling effect of the cooler 56 can be monitored and controlled in real time by the flow rate of the discharged gas. The middle exhaust pipe 568 is used to transport the gas after heat exchange in the second heat exchanger 58 to the lower collecting chamber 511. The number of middle exhaust pipes 568 is the same as the number of coolers 56.

[0028] Furthermore, a spiral plate 569 is provided inside the refrigeration housing 561. The spiral plate 569 is fixedly sleeved on the central tube 563. The function of the spiral plate 569 is to absorb the heat on the upper part of the outer wall of the central tube 563, reduce the temperature of the outer gas inside the central tube 563, prevent the high-temperature gas from transferring heat to the low-temperature gas, and improve the cooling effect of the refrigeration unit 56. The pitch of the spiral plate 569 is small at the top and large at the bottom. The small pitch spiral plate 569 at the top can enhance the heat absorption effect on the upper part of the outer wall of the central tube 563, while the large pitch spiral plate 569 at the bottom is used to switch the airflow to vertical, reducing the energy loss during airflow switching.

[0029] Furthermore, a support 7 is fixedly connected to the bottom corner of the generator 565. The support is hollow and is fixed to the upper cover plate 22 of the wiring compartment. The support 7 is used to connect the generator 565 and the upper cover plate 22 of the wiring compartment. An insulation layer 8 is fixedly connected inside the support 7. The insulation layer 8 is fixedly sleeved on the rectifier 566. The insulation layer 8 is used to keep the cold gas under the central tube 563 cold and improve the cooling effect of the cooler 56.

[0030] Furthermore, each cable 4 is fixedly fitted with a sealing joint 9 at both ends. The two sealing joints 9 are fixed on the top cover plate 22 of the wiring compartment and the top cover plate 25 of the refrigeration compartment, respectively. The sealing joint 9 at the upper end of the cable 4 is used to seal the position where the cable 4 passes through the top cover plate 25 of the refrigeration compartment, and the sealing joint 9 at the lower end of the cable 4 is used to seal the position where the cable 4 passes through the top cover plate 22 of the wiring compartment.

[0031] Furthermore, a lower flange 10 is fixedly fitted on the upper end of the sleeve 1, and an upper flange 11 is provided on the upper side of the lower flange 10; The upper ends of cable 4 and gas injection pipe 3 pass through the chamber 2 and upper flange 11 in sequence, and upper flange 11 is fixedly sleeved on gas injection pipe 3.

[0032] In summary, this utility model provides an air-cooled high-temperature resistant junction box. By setting the cooling component 5, it solves the problem that when the ambient temperature of the cable 4 is high, the power transmission efficiency of the cable 4 will be affected due to the excessively high external temperature.

[0033] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. An air-cooled, high-temperature resistant wiring compartment, characterized in that: It includes a vertically arranged sleeve (1), a chamber (2) is provided inside the sleeve (1), an air injection pipe (3) is vertically arranged inside the chamber (2), a number of vertical cables (4) are arranged around the air injection pipe (3) in the circumference of the chamber (2), and a refrigeration component (5) and a heating component (6) are provided inside the chamber (2).

2. The air-cooled high-temperature resistant wiring compartment as described in claim 1, characterized in that: The compartment (2) includes a vertically arranged wiring compartment shell (21), with a wiring compartment upper cover plate (22) fixedly connected to the upper end of the wiring compartment shell (21) and a wiring compartment lower cover plate (23) fixedly connected to the lower end of the wiring compartment shell (21). A vertical refrigeration chamber shell (24) is fixedly connected to the upper side of the upper cover plate, and a refrigeration chamber cover plate (25) is fixedly connected to the upper end of the refrigeration chamber shell (24). The refrigeration component (5) is located inside the refrigeration chamber shell (24). The bottom of the lower cover plate is fixedly connected to a vertical heating chamber shell (26), and the heating component (6) is located inside the heating chamber shell (26); The upper cover plate (22) of the wiring compartment, the lower cover plate (23) of the wiring compartment, and the cover plate (25) of the refrigeration compartment are respectively fixedly sleeved on the gas injection pipe (3).

3. The air-cooled high-temperature resistant wiring compartment as described in claim 2, characterized in that: The gas injection pipe (3) includes an upper gas injection pipe (31), a middle gas injection pipe (32) and a lower gas injection pipe (33) connected sequentially from top to bottom; The lower end of the lower gas injection pipe (33) passes vertically through the lower cover plate (23) of the wiring compartment, the upper end of the lower gas injection pipe (33) passes vertically through the upper cover plate (22) of the wiring compartment and is fixedly connected to the middle gas injection pipe (32), and the upper end of the middle gas injection pipe (32) passes vertically through the refrigeration compartment cover plate (25) and is fixedly connected to the upper gas injection pipe (31).

4. The air-cooled high-temperature resistant wiring compartment as described in claim 3, characterized in that: The refrigeration assembly (5) includes several upper air guide pipes (51) arranged circumferentially around the central air injection pipe (32). Several upper air guide pipes (51) and several cables (4) are arranged alternately in sequence. The upper air guide pipes (51) are located inside the refrigeration chamber shell (24). One end of the upper air guide pipe (51) is fixedly connected to the central air injection pipe (32), and the other end is fixedly connected to an electric control valve (52). The bottom of the electric control valve (52) is fixedly connected to a central air guide pipe (53). The lower end of the central air guide pipe (53) is fixedly connected to a rectifier chamber (54). The bottom of the rectifier chamber (54) is fixedly connected to a lower air guide pipe (55). The lower end of the lower air guide pipe (55) is provided with a cooler (56). It also includes a first heat exchanger (57) and a second heat exchanger (58). The first heat exchanger (57) is located inside the upper gas injection pipe (31). The upper end of the first heat exchanger (57) is fixedly connected to an upper collecting chamber (59). The upper end of the upper collecting chamber (59) extends outward through the upper exhaust pipe (510) and is fixedly connected to the upper exhaust pipe (510). The lower end of the first heat exchanger (57) is fixedly connected to a lower collecting chamber (511). The lower collecting chamber (511) is connected to the cooler (56). The second heat exchanger (58) is located inside the wiring compartment housing (21) and is connected to the refrigerator (56).

5. The air-cooled high-temperature resistant wiring compartment as described in claim 4, characterized in that: The refrigerator (56) includes a refrigeration housing (561), the top of which is fixedly connected to the lower air guide pipe (55), a hot air outlet pipe (562) is provided above the refrigeration housing (561), a central pipe (563) is vertically provided in the middle of the refrigeration housing (561), the upper end of the central pipe (563) passes through the top of the refrigeration housing (561) and is fixedly connected to one end of the hot air outlet pipe (562), and the other end of the hot air outlet pipe (562) passes outward through the refrigeration chamber housing (24) and is fixedly connected to a manifold valve (564); A generator (565) is fixedly connected to the bottom of the refrigeration chamber shell (24). A rectifier (566) is fixedly connected to the center of the bottom of the generator (565). The upper end of the rectifier (566) is fixedly connected to the lower end of the central tube (563). The lower end of the rectifier (566) passes through the upper cover plate (22) of the wiring compartment and is fixedly connected to the upper end of the second heat exchanger (58). The lower end of the second heat exchanger (58) is fixedly connected to a lower exhaust pipe (567), which is fixedly connected to the manifold valve (564). The upper side of the manifold valve (564) is fixedly connected to a vertical middle exhaust pipe (568), and the upper end of the middle exhaust pipe (568) passes through the upper air injection pipe (31) and is fixedly connected to the lower collecting chamber (511).

6. The air-cooled high-temperature resistant wiring compartment as described in claim 5, characterized in that: The cooling housing (561) is provided with a spiral plate (569), which is fixedly sleeved on the central tube (563).

7. The air-cooled high-temperature resistant wiring compartment as described in claim 5, characterized in that: A support (7) is fixedly connected to the bottom corner of the generator (565). The support (7) is fixed on the upper cover plate (22) of the wiring compartment. An insulation layer (8) is fixedly connected inside the support (7). The insulation layer (8) is fixedly sleeved on the rectifier (566).

8. The air-cooled high-temperature resistant wiring compartment as described in claim 3, characterized in that: The heating assembly (6) includes a plurality of heating rods (61) corresponding one-to-one with the cable (4). The heating rods (61) pass vertically through the lower cover plate and are fixedly connected to the lower cover plate. The heating rods (61) are electrically connected to the cable (4).

9. The air-cooled high-temperature resistant wiring compartment as described in claim 8, characterized in that: Each of the cables (4) is fixedly fitted with a sealing joint (9) at both ends, and the two sealing joints (9) are respectively fixed on the top cover plate (22) of the wiring compartment and the top cover plate (25) of the refrigeration compartment.

10. The air-cooled high-temperature resistant wiring compartment as described in claim 1, characterized in that: The upper end of the sleeve (1) is fixedly fitted with a lower flange (10), and the upper side of the lower flange (10) is provided with an upper flange (11); The upper ends of the cable (4) and the gas injection pipe (3) pass through the chamber (2) and the upper flange (11) in sequence, and the upper flange (11) is fixedly sleeved on the gas injection pipe (3).

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