Low-temperature-resistant transformer

Abstract

The invention discloses a low-temperature-resistant transformer, and relates to the technical field of transformers, the low-temperature-resistant transformer comprises an electric appliance cabinet, an iron core is installed in the electric appliance cabinet, a lower clamping piece, an upper clamping piece, a low-voltage coil and a high-voltage coil are arranged on the iron core, and a cooling air channel is reserved between the low-voltage coil and the high-voltage coil; an air suction ring is installed at the bottom of the cooling air channel, an air extractor and a heat storage module are arranged on one side in the electric appliance cabinet, the air extractor is connected with the heat storage module through an air heat exchanger, a heat pipe is installed on the top of the electric appliance cabinet, and the lower clamping piece and the upper clamping piece are provided with distance adjusting assemblies. When equipment runs, an air extractor is started, the air velocity in a cooling air channel is accelerated through an air suction ring, hot air enters an air heat exchanger through an air pipe and finally enters a heat storage module, active deformation compensation is conducted on the air heat exchanger through a distance adjusting assembly, and the heat storage module is used for storing heat. And the generated deformation is monitored through the monitoring assembly.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, specifically a low-temperature resistant transformer. Background Technology

[0002] As a core piece of equipment in the power system, transformers rely on the principle of electromagnetic induction to achieve voltage transformation and efficient transmission of electrical energy. They are a key carrier in the transmission, distribution and use of electrical energy and are widely adaptable to various power application scenarios. With the development of the country, low-temperature resistant transformers have become core power distribution equipment for power systems in high-altitude and polar regions and other low-temperature operating conditions. They are adapted to the power transmission and distribution needs of special scenarios such as high-altitude remote areas and low-temperature industrial sites, and have become an important support for the cross-scenario deployment of new power systems.

[0003] Traditional dry-type low-temperature transformers do not have the function of recovering the heat generated during equipment operation, and under the stress of thermal expansion and contraction, they often passively adapt to their deformation and cannot actively monitor and compensate for the deformation of the core and connection parts. Summary of the Invention

[0004] The purpose of this invention is to provide a low-temperature resistant transformer to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The low-temperature resistant transformer includes an electrical cabinet, inside which an iron core is installed. A low-voltage coil and a high-voltage coil are mounted on the iron core from the inside out. A cooling air passage is provided between the low-voltage coil and the high-voltage coil. An air intake ring is installed at the bottom of the cooling air passage. An air extractor and a heat storage module are installed on one side of the electrical cabinet. The air extractor is connected to the air intake ring via a duct. The air extractor is connected to the heat storage module via an air heat exchanger. A heat pipe is installed on the top of the electrical cabinet. The output end of the heat storage module is connected to the heat pipe. A lower clamping member and an upper clamping member are installed on the iron core. Both the lower clamping member and the upper clamping member are connected via… The distance adjustment component clamps the device, and monitoring components are installed on the lower and upper clamping parts on the same side. When the equipment is running, the air pump is started, and the air flow rate in the cooling air passage is accelerated through the air suction ring to increase heat dissipation. At the same time, the hot air enters the air heat exchanger through the air duct and finally enters the heat storage module for preheating of various connection parts, iron core and windings before the equipment starts. Meanwhile, the thermal expansion and contraction coefficients of the iron core are greatly different when the equipment is running and stopped, which will cause a small distance change between the lower and upper clamping parts. The distance adjustment component actively compensates for the deformation. Since the deformation amount is different at different positions of the iron core, the monitoring component monitors the deformation amount generated by the lower and upper clamping parts.

[0006] As a preferred technical solution, the distance adjustment assembly includes a housing, an upper rotating shaft, a lower rotating shaft, a thread, a driven wheel, a drive shaft, a driving wheel, a planetary carrier, an upper meshing wheel, a lower meshing wheel, an electric telescopic rod, and a threaded hole;

[0007] The upper and lower clamping members are symmetrically mounted with housings on the same side. An upper rotating shaft, a lower rotating shaft, and a drive shaft are rotatably mounted inside the housings. Driven wheels are mounted at one end of each of the upper and lower rotating shafts within the housings. A driving wheel is mounted on the drive shaft, and two planetary carriers are rotatably mounted on the drive shaft, symmetrical about the driving wheel. An upper meshing wheel and a lower meshing wheel are rotatably mounted on each of the two planetary carriers. An electric telescopic rod is mounted on the outer wall of the housing near the planetary carriers. The first and second actuating ends of the electric telescopic rod are hinged to the two planetary carriers, respectively. Threads are present on the portions of the upper and lower rotating shafts that penetrate the housings. The upper and lower clamping members are located away from the housings. Each side of the body has a pair of threaded holes. The upper and lower rotating shafts have threaded ends that pass through the threaded holes to form a threaded pair. When the iron core column, lower yoke, and upper yoke need to be deformed and compensated, the drive motor drives the drive shaft to rotate. At this time, the upper and lower meshing wheels that mesh with the driving wheel start to rotate. By controlling the first or second actuator of the electric telescopic rod to extend forward, the planetary carrier drives the upper meshing wheel to mesh with the driven wheel on the upper rotating shaft or the lower meshing wheel to mesh with the driven wheel on the lower rotating shaft, thereby achieving compensation of the top or bottom of the clamping part. When the top and bottom conditions are the same, clamping or loosening is achieved by controlling the upper and lower meshing wheels to mesh with the corresponding driven wheels simultaneously.

[0008] As a preferred technical solution, the monitoring component includes a clamping force detector, a distance detector, a light source emitter, a mounting block, a mounting hole, a connecting shaft, a return spring, a clamping part, a measuring tube, and a light source receiver;

[0009] Both the upper and lower clamping members are equipped with clamping force detectors. A distance detector is installed at one end of the upper clamping member. Mounting blocks are installed at the bottom of the upper clamping member and the top of the lower clamping member. Mounting holes are provided on the mounting blocks, and a connecting shaft is slidably installed within each mounting hole. One end of the connecting shaft is connected to the mounting hole via a return spring, and the other end of the connecting shaft is provided with a clamping part. A measuring tube is installed at the clamping end of the clamping part. A light source emitter is installed on the upper clamping member, and a light source receiver is installed on the lower clamping member. The measuring tube is located at the light source. Between the transmitter and the light source receiver, the distance and clamping force changes between the upper or lower clamping parts are monitored by a clamping force detector and a distance detector, and the feedback is sent to the drive motor and the electric telescopic rod. When the deformation of the upper and lower clamping parts is different, the extension and rotation angle of the two connecting shafts in the mounting hole will be different. This will cause the measuring tube to deviate from its original position, which makes it easy to judge intuitively. When the deviation caused by the measuring tube makes it impossible for the light from the light source transmitter to be projected onto the light source receiver, the feedback is sent to the control center to avoid equipment damage.

[0010] As a preferred technical solution, the clamping part includes a fixing ring, a clamping head, a rotating ring, a driving groove, a passage groove, a paddle, a sliding groove, a slip ring, a spring rod, a meshing tooth groove, a locking rod, and an annular cavity;

[0011] A fixing ring is installed on the connecting shaft. An annular cavity is formed inside the fixing ring. A clamping head is slidably installed inside the annular cavity, with the clamping end of the clamping head located outside the annular cavity. A rotating ring is rotatably installed inside the annular cavity. A drive groove is formed on the rotating ring at the clamping head. A passage groove is formed on the side wall of the fixing ring. A paddle is installed on the rotating ring, and the paddle passes through the passage groove. A sliding groove is formed at the bottom of the fixing ring. A sliding ring is slidably installed on the sliding groove. A locking rod is installed on the sliding ring. A spring rod is installed at the bottom of the fixing ring and connected to the sliding ring. Engaging tooth grooves are formed at the top of the sliding ring and the sliding groove. When installing or replacing the measuring tube, the sliding ring is pulled down, causing the locking rod to disengage from the round hole of the paddle and the two locked engagement tooth grooves to disengage. At this time, the sliding ring is rotated, and then the paddle is moved to make the rotating ring rotate. The clamping head clamps or releases under the action of the drive groove, thereby fixing measuring tubes of different diameters.

[0012] As a preferred technical solution, a boss is installed inside the housing, the upper rotating shaft and the lower rotating shaft pass through the boss, a rotating groove is opened in the boss, and a limit ring is installed on both the upper rotating shaft and the lower rotating shaft, the limit ring being located in the rotating groove.

[0013] As a preferred technical solution, the clamping force detector, distance detector, and light source receiver are all electrically connected to the electric telescopic rod.

[0014] As a preferred technical solution, an auxiliary heater is installed on the inner wall of the electrical cabinet, and a temperature monitor is installed on the top of the electrical cabinet. The temperature monitor is electrically connected to the auxiliary heater and the heat storage module.

[0015] As a preferred technical solution, the arc-shaped contact point between the clamping head and the measuring tube is a friction surface used to increase friction.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This application uses an air pump to accelerate the airflow in the cooling air duct to increase heat dissipation. At the same time, the hot air enters the air heat exchanger through the air duct and finally enters the heat storage module for preheating of various connection parts, iron core and windings before the equipment starts. Meanwhile, the iron core has a large difference in thermal expansion and contraction coefficients when the equipment is running and stopped, which will cause a small distance change between the lower clamping part and the upper clamping part. The distance adjustment component actively compensates for the deformation. Since the deformation amount is different at different positions of the iron core, the deformation amount generated by the lower clamping part and the upper clamping part is monitored by the monitoring component.

[0018] 2. This application drives the drive shaft to rotate via a drive motor. At this time, the upper and lower meshing wheels that mesh with the driving wheel begin to rotate. By controlling the first or second actuator of the electric telescopic rod to extend forward, the planetary carrier drives the upper meshing wheel to mesh with the driven wheel on the upper rotating shaft or the lower meshing wheel to mesh with the driven wheel on the lower rotating shaft, thereby achieving compensation of the top or bottom of the clamping member. When the top and bottom conditions are the same, clamping or releasing is achieved by controlling the upper and lower meshing wheels to mesh with the corresponding driven wheels simultaneously.

[0019] 3. The distance and clamping force changes between the upper and lower clamping parts are monitored by the clamping force detector and the distance detector, and the feedback is sent to the drive motor and electric telescopic rod. When the deformation of the upper and lower clamping parts is different, the extension and rotation angle of the two connecting shafts in the mounting hole will be different. This will cause the measuring tube to deviate from its original position, which is convenient for intuitive judgment. When the deviation of the measuring tube makes it impossible for the light emitted by the light source to be projected onto the light source receiver, the feedback is sent to the control center to avoid equipment damage. When installing or replacing the measuring tube, pull down the slip ring to disengage the clamping rod from the round hole of the lever and disengage the two locking meshing tooth grooves. Then rotate the slip ring and then move the lever to make the rotating ring rotate. The clamping head clamps or releases under the action of the drive groove, thereby fixing measuring tubes of different diameters. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a partial cross-sectional view of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal first-view structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the first-view structure of the distance adjustment component of the present invention;

[0024] Figure 5 This is a schematic diagram of the first cross-sectional structure of the distance adjustment component of the present invention;

[0025] Figure 6 This is a schematic diagram of the second cross-sectional structure of the distance adjustment component of the present invention;

[0026] Figure 7 This is a schematic diagram of a half-section of the clamping part of the present invention;

[0027] Figure 8 for Figure 2 A magnified structural diagram at point A in the diagram.

[0028] In the diagram: 1. Iron core; 102. Lower clamping component; 104. Upper clamping component; 2. Low-voltage coil; 3. High-voltage coil; 4. Cooling air duct; 8. Electrical cabinet; 9. Suction ring; 10. Evacuator; 11. Heat storage module; 12. Heat pipe; 13. Auxiliary heater; 14. Temperature monitor;

[0029] 6. Distance adjustment assembly; 601. Housing; 602. Upper rotating shaft; 603. Lower rotating shaft; 604. Thread; 605. Driven wheel; 606. Drive shaft; 607. Driving wheel; 608. Planetary carrier; 609. Upper meshing wheel; 610. Lower meshing wheel; 611. Electric telescopic rod; 614. Threaded hole; 615. Boss; 616. Rotary groove; 617. Limiting ring;

[0030] 7. Monitoring components; 701. Clamping force detector; 702. Distance detector; 703. Light source emitter; 704. Mounting block; 705. Mounting hole; 706. Connecting shaft; 707. Return spring; 708. Clamping part; 7081. Fixing ring; 7082. Clamping head; 7083. Rotary ring; 7084. Drive groove; 7085. Passage groove; 7086. Paddle; 7087. Slide groove; 7088. Slip ring; 7089. Spring rod; 7090. Engaging tooth groove; 7091. Clamping rod; 7092. Annular cavity; 709. Measuring tube; 710. Light source receiver. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example: Figures 1-3 As shown, the present invention provides a technical solution for a low-temperature resistant transformer, which includes an electrical cabinet 8. An iron core 1 is installed inside the electrical cabinet 8. A low-voltage coil 2 and a high-voltage coil 3 are mounted on the iron core 1 from the inside out. A cooling air passage 4 is provided between the low-voltage coil 2 and the high-voltage coil 3. An air suction ring 9 is installed at the bottom of the cooling air passage 4. An air extractor 10 and a heat storage module 11 are arranged on one side inside the electrical cabinet 8. The air extractor 10 is connected to the air suction ring 9 via a duct. The air extractor 10 is connected to the heat storage module 11 via an air heat exchanger. A heat pipe 12 is installed on the top of the electrical cabinet 8. The output end of the heat storage module 11 is connected to the heat pipe 12. A lower clamping member 102 and an upper clamping member 104 are installed on the iron core 1. All clamping members 104 are clamped by distance adjustment components 6. Monitoring components 7 are provided on the lower clamping member 102 and the upper clamping member 104 on the same side. When the equipment is running, the air pump 10 is started, and the air flow rate in the cooling air passage 4 is accelerated by the air suction ring 9 to increase heat dissipation. At the same time, the hot air enters the air heat exchanger through the air duct and finally enters the heat storage module 11 for preheating of each connection part, as well as the iron core and windings before the equipment is started. Meanwhile, the thermal expansion and contraction coefficient of the iron core 1 is large when the equipment is running and stopped, which will cause a small distance change between the lower clamping member 102 and the upper clamping member 104. The distance adjustment components 6 actively compensate for the deformation. Since the deformation amount is different at different positions of the iron core 1, the monitoring components 7 monitor the deformation amount generated by the lower clamping member 102 and the upper clamping member 104.

[0033] like Figures 4-6 As shown, the distance adjustment assembly 6 includes a housing 601, an upper rotating shaft 602, a lower rotating shaft 603, a thread 604, a driven wheel 605, a drive shaft 606, a driving wheel 607, a planetary carrier 608, an upper meshing wheel 609, a lower meshing wheel 610, an electric telescopic rod 611, and a threaded hole 614.

[0034] A housing 601 is symmetrically mounted on the same side of both the lower clamping member 102 and the upper clamping member 104. An upper rotating shaft 602, a lower rotating shaft 603, and a drive shaft 606 are rotatably mounted inside the housing 601. Driven wheels 605 are mounted at one end of both the upper rotating shaft 602 and the lower rotating shaft 603 within the housing 601. A driving wheel 607 is mounted on the drive shaft 606. Two planetary carriers 608 are rotatably mounted on the drive shaft 606, and the two planetary carriers 608 are positioned relative to the driving wheel. The wheels 607 are symmetrical. Upper meshing wheels 609 and lower meshing wheels 610 are rotatably mounted on two planetary carriers 608, respectively. An electric telescopic rod 611 is installed on the outer wall of the housing 601 near the planetary carriers 608. The first and second actuating ends of the electric telescopic rod 611 are hinged to the two planetary carriers 608, respectively. The portions of the upper rotating shaft 602 and lower rotating shaft 603 that penetrate the housing 601 are both threaded with threads 604. Lower clamping member 102 and upper clamping member 104 are also present. A pair of threaded holes 614 are provided on the side away from the housing 601. The upper rotating shaft 602 and the lower rotating shaft 603 have one end with a thread 604 that passes through the threaded hole 614 to form a threaded pair. When the iron core column 1, the lower yoke 101 and the upper yoke 103 need to be deformed and compensated, the drive motor drives the drive shaft 606 to rotate. At this time, the upper meshing wheel 609 and the lower meshing wheel 610, which are meshed with the drive wheel 607, start to rotate. By controlling the first or second actuating end of the electric telescopic rod 611 to extend forward, the planetary carrier 608 drives the upper meshing wheel 609 to mesh with the driven wheel 605 on the upper rotating shaft 602 or the lower meshing wheel 610 to mesh with the driven wheel 605 on the lower rotating shaft 603, thereby realizing the compensation of the top or bottom of the clamping part. When the top and bottom conditions are the same, the upper meshing wheel 609 and the lower meshing wheel 610 are simultaneously meshed with the corresponding driven wheel 605 to achieve clamping or loosening.

[0035] like Figure 2 , Figure 3 and Figure 8 As shown, the monitoring component 7 includes a clamping force detector 701, a distance detector 702, a light source emitter 703, a mounting block 704, a mounting hole 705, a connecting shaft 706, a return spring 707, a clamping part 708, a measuring tube 709, and a light source receiver 710.

[0036] Both the lower clamping member 102 and the upper clamping member 104 are equipped with clamping force detectors 701. A distance detector 702 is installed at one end of the upper clamping member 104. Mounting blocks 704 are installed at the bottom of the lower clamping member 102 and the top of the upper clamping member 104. Mounting blocks 704 have mounting holes 705. A connecting shaft 706 is slidably installed in the mounting holes 705. One end of the connecting shaft 706 is connected to the mounting holes 705 by a return spring 707. The other end of the connecting shaft 706 is provided with a clamping part 708. A measuring tube 709 is installed at the clamping end of the clamping part 708. A light source emitter 703 is installed on the upper clamping member 104, and a light source receiver 710 is installed on the lower clamping member 102. The measuring tube 709 is located at... Between the light source emitter 703 and the light source receiver 710, the distance and clamping force changes between the upper clamping member 104 or the lower clamping member 102 are monitored by the clamping force detector 701 and the distance detector 702, and the feedback is sent to the drive motor and the electric telescopic rod 611. When the deformation of the lower clamping member 102 and the upper clamping member 104 is different, the extension and rotation angle of the two connecting shafts 706 in the mounting hole 705 will be different. At this time, the measuring tube 709 will deviate from its original position, which facilitates intuitive judgment. When the deviation of the measuring tube 709 prevents the light from the light source emitter 703 from being projected onto the light source receiver 710, the feedback is sent to the control center to avoid equipment damage.

[0037] like Figure 7 and Figure 8 As shown, the clamping part 708 includes a fixing ring 7081, a clamping head 7082, a rotating ring 7083, a driving groove 7084, a passage groove 7085, a paddle 7086, a sliding groove 7087, a slip ring 7088, a spring rod 7089, a meshing tooth groove 7090, a locking rod 7091, and an annular cavity 7092;

[0038] A retaining ring 7081 is mounted on the connecting shaft 706. An annular cavity 7092 is formed within the retaining ring 7081. A clamping head 7082 is slidably mounted within the annular cavity 7092, with its clamping end located outside the annular cavity 7092. A rotating ring 7083 is rotatably mounted within the annular cavity 7092. A driving groove 7084 is formed on the rotating ring 7083 at the clamping head 7082. A passage groove 7085 is formed on the side wall of the retaining ring 7081. A lever 7086 is mounted on the rotating ring 7083, and the lever 7086 passes through the passage groove 7085. A sliding groove 7087 is formed at the bottom of the retaining ring 7081, and a sliding ring 708 is slidably mounted on the sliding groove 7087. 8. A locking rod 7091 is installed on the slip ring 7088, and a spring rod 7089 is installed at the bottom of the fixing ring 7081. The spring rod 7089 is connected to the slip ring 7088. Both the top of the slip ring 7088 and the slide groove 7087 are provided with meshing tooth grooves 7090. When installing or replacing the measuring tube 709, pull down the slip ring 7088 to disengage the locking rod 7091 from the round hole of the lever 7086 and disengage the two locked meshing tooth grooves 7090. At this time, rotate the slip ring 7088, and then move the lever 7086 to make the rotating ring 7083 rotate. The clamping head 7082 clamps or releases under the action of the drive groove 7084, thereby fixing measuring tubes 709 of different diameters.

[0039] A boss 615 is installed inside the housing 601. The upper rotating shaft 602 and the lower rotating shaft 603 pass through the boss 615. A rotating groove 616 is opened in the boss 615. Limiting rings 617 are installed on both the upper rotating shaft 602 and the lower rotating shaft 603. The limiting rings 617 are located in the rotating groove 616.

[0040] The clamping force detector 701, the distance detector 702, and the light source receiver 710 are all electrically connected to the electric telescopic rod 611.

[0041] An auxiliary heater 13 is installed on the inner wall of the electrical cabinet 8, and a temperature monitor 14 is installed on the top of the electrical cabinet 8. The temperature monitor 14 is electrically connected to the auxiliary heater 13 and the heat storage module 11.

[0042] The arc-shaped contact point between the clamping head 7082 and the measuring tube 709 is a friction surface used to increase friction.

[0043] Working principle of the invention:

[0044] When the equipment is running, the air extractor 10 is started, and the air flow rate in the cooling air passage 4 is accelerated by the air intake ring 9 to increase heat dissipation. At the same time, the hot air enters the air heat exchanger through the air duct and finally enters the heat storage module 11 for preheating of the various connection parts, iron core and windings before the equipment is started. Meanwhile, the thermal expansion and contraction coefficient of the iron core 1 is large when the equipment is running and stopped, which will cause a small distance change between the lower clamping member 102 and the upper clamping member 104. The distance adjustment component 6 actively compensates for the deformation. Since the deformation amount is different at different positions of the iron core 1, the deformation amount generated by the lower clamping member 102 and the upper clamping member 104 is monitored by the monitoring component 7.

[0045] When the core column 1, lower yoke 101, and upper yoke 103 need to be deformed and compensated, the drive motor drives the drive shaft 606 to rotate. At this time, the upper meshing wheel 609 and lower meshing wheel 610, which are meshed with the drive wheel 607, start to rotate. By controlling the first or second actuating end of the electric telescopic rod 611 to extend forward, the planetary carrier 608 drives the upper meshing wheel 609 to mesh with the driven wheel 605 on the upper rotating shaft 602 or the lower meshing wheel 610 to mesh with the driven wheel 605 on the lower rotating shaft 603, thereby achieving compensation of the top or bottom of the clamping member. When the top and bottom conditions are the same, clamping or loosening is achieved by controlling the upper meshing wheel 609 and lower meshing wheel 610 to mesh with the corresponding driven wheel 605 at the same time.

[0046] The clamping force detector 701 and the distance detector 702 monitor the distance and clamping force changes between the lower clamping member 102 or the upper clamping member 104 and feed them back to the drive motor and the electric telescopic rod 611. When the deformation of the lower clamping member 102 and the upper clamping member 104 is different, the extension and rotation angle of the two connecting shafts 706 in the mounting hole 705 will be different. At this time, the measuring tube 709 will deviate from its original position, which makes it easy to judge intuitively. When the deviation of the measuring tube 709 prevents the light from the light source emitter 703 from being projected onto the light source receiver 710, it is fed back to the control center to avoid equipment damage.

[0047] When installing or replacing the measuring tube 709, pull down the slip ring 7088 to disengage the clamping rod 7091 from the round hole of the lever 7086 and disengage the two locking meshing grooves 7090. At this time, rotate the slip ring 7088, and then move the lever 7086 to make the rotating ring 7083 rotate. The clamping head 7082 clamps or releases under the action of the drive groove 7084, thereby fixing the measuring tubes 709 of different diameters.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A low-temperature resistant transformer, characterized in that: The low-temperature resistant transformer includes an electrical cabinet (8), inside which is installed an iron core (1). A low-voltage coil (2) and a high-voltage coil (3) are mounted on the iron core (1) from the inside out. A cooling air passage (4) is provided between the low-voltage coil (2) and the high-voltage coil (3). A suction ring (9) is installed at the bottom of the cooling air passage (4). An air extractor (10) and a heat storage module (11) are provided on one side inside the electrical cabinet (8). The air extractor (10) and the suction ring (9) are connected via a duct. The gas generator (10) is connected to the heat storage module (11) through an air heat exchanger. A heat pipe (12) is installed on the top of the electrical cabinet (8). The output end of the heat storage module (11) is connected to the heat pipe (12). A lower clamping member (102) and an upper clamping member (104) are installed on the iron core (1). Both the lower clamping member (102) and the upper clamping member (104) are clamped by a distance adjustment component (6). A monitoring component (7) is provided on the lower clamping member (102) and the upper clamping member (104) on the same side.

2. A low-temperature resistant transformer according to claim 1, characterized in that: The distance adjustment assembly (6) includes a housing (601), an upper rotating shaft (602), a lower rotating shaft (603), a thread (604), a driven wheel (605), a drive shaft (606), a driving wheel (607), a planetary carrier (608), an upper meshing wheel (609), a lower meshing wheel (610), an electric telescopic rod (611), and a threaded hole (614). A housing (601) is symmetrically mounted on the same side of both the lower clamping member (102) and the upper clamping member (104). An upper rotating shaft (602), a lower rotating shaft (603), and a drive shaft (606) are rotatably mounted inside the housing (601). Driven wheels (605) are mounted at one end of each of the upper rotating shaft (602) and the lower rotating shaft (603) within the housing (601). A driving wheel (607) is mounted on the drive shaft (606). Two planetary carriers (608) are rotatably mounted on the drive shaft (606), and the two planetary carriers (608) are symmetrical about the driving wheel (607). Upper meshing wheels (609) are rotatably mounted on each of the two planetary carriers (608). The housing (601) is equipped with an electric telescopic rod (611) near the outer wall of the planetary carrier (608). The first and second actuating ends of the electric telescopic rod (611) are respectively hinged to the two planetary carriers (608). The upper rotating shaft (602) and the lower rotating shaft (603) are threaded (604) through the housing (601). The lower clamping member (102) and the upper clamping member (104) are provided with a pair of threaded holes (614) on the side away from the housing (601). The threaded ends of the upper rotating shaft (602) and the lower rotating shaft (603) are threaded (604) through the threaded holes (614) to form a threaded pair.

3. A low-temperature resistant transformer according to claim 2, characterized in that: The monitoring component (7) includes a clamping force detector (701), a distance detector (702), a light source emitter (703), a mounting block (704), a mounting hole (705), a connecting shaft (706), a return spring (707), a clamping part (708), a measuring tube (709), and a light source receiver (710). Both the lower clamping member (102) and the upper clamping member (104) are equipped with clamping force detectors (701). A distance detector (702) is installed at one end of the upper clamping member (104). Mounting blocks (704) are installed at the bottom of the lower clamping member (102) and the top of the upper clamping member (104). Mounting holes (705) are provided on the mounting blocks (704). A connecting shaft (706) is slidably installed in the mounting holes (705). The connecting shaft (706) is... The end of the connecting shaft (706) is connected to the mounting hole (705) by a return spring (707). The other end of the connecting shaft (706) is provided with a clamping part (708). A measuring tube (709) is installed on the clamping end of the clamping part (708). A light source emitter (703) is installed on the upper clamping member (104). A light source receiver (710) is installed on the lower clamping member (102). The measuring tube (709) is located between the light source emitter (703) and the light source receiver (710).

4. A low-temperature resistant transformer according to claim 3, characterized in that: The clamping part (708) includes a fixing ring (7081), a clamping head (7082), a rotating ring (7083), a drive groove (7084), a passage groove (7085), a paddle (7086), a sliding groove (7087), a slip ring (7088), a spring rod (7089), a meshing tooth groove (7090), a locking rod (7091), and an annular cavity (7092). A fixing ring (7081) is installed on the connecting shaft (706). An annular cavity (7092) is formed inside the fixing ring (7081). A clamping head (7082) is slidably installed inside the annular cavity (7092), and the clamping end of the clamping head (7082) is located outside the annular cavity (7092). A rotating ring (7083) is rotatably installed inside the annular cavity (7092). A driving groove (7084) is formed on the rotating ring (7083) at the clamping head (7082). A passage groove (7085) is formed on the side wall of the fixing ring (7081). The rotating ring (7083) is rotatably installed inside the annular cavity (7092). A paddle (7086) is installed on the 083, and the paddle (7086) passes through the passage groove (7085). A sliding groove (7087) is provided at the bottom of the fixing ring (7081). A sliding ring (7088) is slidably installed on the sliding groove (7087). A locking rod (7091) is installed on the sliding ring (7088). A spring rod (7089) is installed at the bottom of the fixing ring (7081), and the spring rod (7089) is connected to the sliding ring (7088). Both the top of the sliding ring (7088) and the sliding groove (7087) are provided with meshing tooth grooves (7090).

5. A low-temperature resistant transformer according to claim 2, characterized in that: A boss (615) is installed inside the housing (601). The upper rotating shaft (602) and the lower rotating shaft (603) pass through the boss (615). A rotating groove (616) is opened inside the boss (615). A limiting ring (617) is installed on both the upper rotating shaft (602) and the lower rotating shaft (603). The limiting ring (617) is located inside the rotating groove (616).

6. A low-temperature resistant transformer according to claim 3, characterized in that: The clamping force detector (701), distance detector (702), and light source receiver (710) are all electrically connected to the electric telescopic rod (611).

7. A low-temperature resistant transformer according to claim 6, characterized in that: An auxiliary heater (13) is installed on the inner wall of the electrical cabinet (8), and a temperature monitor (14) is installed on the top of the electrical cabinet (8). The temperature monitor (14) is electrically connected to the auxiliary heater (13) and the heat storage module (11).

8. A low-temperature resistant transformer according to claim 4, characterized in that: The arc-shaped contact point between the clamping head (7082) and the measuring tube (709) is a friction surface used to increase friction.

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