A reactive power compensation device

Abstract

The present invention discloses a reactive power compensation device, which relates to the field of reactive power compensation, including a reactive compensation capacitor and a reactive compensation cabinet for installing the reactive compensation capacitor, wherein a cooling fan is arranged on the top of the reactive compensation cabinet, heat dissipation slots are arranged on both sides of the reactive compensation cabinet, and a plurality of hollow support bars are symmetrically fixedly installed on both sides of the inner wall of the reactive compensation cabinet from bottom to top, and hollow heat exchange bars are installed between the hollow support bars on both sides. The reactive power compensation device supports the reactive compensation capacitor by arranging hollow support bars and hollow heat exchange bars, so that the reactive compensation capacitor can be in direct contact with the hollow heat exchange bar, and when cooling water passes through the hollow heat exchange bar, it can directly exchange heat with the reactive compensation capacitor, thereby efficiently cooling the reactive compensation capacitor, so that with the cooperation of the cooling fan, the temperature inside the reactive compensation cabinet can be effectively controlled.

Description

Technical Field

[0001] The invention relates to reactive power compensation technology, and in particular to a reactive power compensation device. Background Art

[0002] With the development of society and the advancement of science and technology, the need for electric energy is increasing day by day, and the demand for electric energy is also increasing accordingly. In order to meet the needs of production and life, it is becoming increasingly important to improve the power quality of the power supply and distribution system.

[0003] Common methods for improving power quality include harmonic control and control of voltage fluctuations and flickers. The methods for preventing harmonics in harmonic control mainly include: using rectifiers with multiple pulses, changing the connection method of transformers, and adopting rotating motor designs that reduce harmonic magnetic potential. The control of voltage fluctuations and flickers is carried out by improving power supply capacity and installing compensation equipment. The installation of compensation equipment includes installing reactive power compensators and reactive power generators, and performing corresponding compensation through reactive power compensators and reactive power generators to improve the power factor of the power grid.

[0004] Traditional reactive power compensators are mainly composed of capacitors, reactors, compound switches, circuit breakers and other components. When the reactive power compensator is running, under the influence of harmonics, the capacitors are prone to overload and overheating, causing the temperature inside the reactive power compensator cabinet to rise, which will not only affect the service life of the reactive power compensator components, but also greatly increase the failure rate of the reactive power compensator. Summary of the invention

[0005] The object of the present invention is to provide a reactive power compensation device to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a reactive power compensation device, comprising a reactive compensation capacitor and a reactive compensation cabinet for installing the reactive compensation capacitor, a cooling fan is arranged on the top of the reactive compensation cabinet, heat dissipation grooves are arranged on both sides of the reactive compensation cabinet, a plurality of hollow support bars are symmetrically fixedly installed on both sides of the inner wall of the reactive compensation cabinet from bottom to top, hollow heat exchange bars are installed between the hollow support bars on both sides, an installation cavity is arranged at the bottom of the reactive compensation cabinet, a cold water tank is installed on the inner wall of the installation cavity, a circulating pump is installed at the bottom of the installation cavity, and a heat exchanger is installed between the pump suction end of the circulating pump and the cold water tank. A pump suction pipe is fixedly connected, a pumping pipe is fixedly connected to the pumping end of the circulating pump, a liquid infusion pipe is fixedly connected to the end of the pumping pipe, a bracket is installed inside the installation cavity, a cooling coil is installed on one side of the bracket, the discharge end of the cooling coil is fixedly connected to the cold water tank, a return pipe is fixedly connected to the liquid inlet end of the cooling coil, short pipes are fixedly connected between the hollow support bar and the liquid infusion pipe on one side and between the hollow support bar and the return pipe on the other side, a control valve is installed on the short pipe, a cooling fan corresponding to the cooling coil is installed on the bracket, and ventilation slots corresponding to the cooling fan are symmetrically opened on both sides of the inner wall of the installation cavity;

[0007] Connecting strips are fixedly installed on both sides of the hollow heat exchange strip, and a plurality of mounting holes are equidistantly provided on the connecting strip along its length direction. A plurality of connecting plates are fixedly connected to the side of the reactive power compensation capacitor, and hole grooves corresponding to the mounting holes are provided on the surface of the connecting plate. The connecting plate and the connecting strip are connected and fixed by bolts and nuts. When the connecting plate and the connecting strip are connected and fixed, the bottom of the reactive power compensation capacitor contacts the surface of the hollow heat exchange strip.

[0008] Furthermore, the hollow support bars and the hollow heat exchange bars are both made of copper alloy material.

[0009] Furthermore, the surface of the hollow support bar is fixedly connected with a plurality of conducting tubes at equal intervals along its length direction, the surface of the hollow support bar is fixedly connected with internally threaded short tubes located on both sides of the conducting tube, the outer side surfaces at both ends of the hollow heat exchange bar are slidably connected with fixed sleeves, the inner side surface of the fixed sleeve is fixedly connected with a connecting head, the end of the connecting head close to the conducting tube is inserted into the interior of the conducting tube, and the shape and specifications of the connecting head close to the end of the conducting tube are adapted to the internal groove body of the conducting tube, the end of the connecting head close to the hollow heat exchange bar is slidably connected to the inner side surface of the hollow heat exchange bar, and the shape and specifications of the connecting head close to the end of the hollow heat exchange bar are adapted to the internal cavity of the hollow heat exchange bar, and the connecting head can connect the conducting tube and the hollow heat exchange bar.

[0010] Furthermore, guide grooves are symmetrically provided on both sides of the hollow heat exchange strip, a guide block is fixedly connected to the inner side surface of the fixed sleeve, a tension spring is fixedly connected between the side of the guide groove away from the conducting tube and the guide block, an auxiliary groove extending to the end of the hollow heat exchange strip is provided on the inner side surface of the guide groove, an auxiliary plate is fixedly connected between the inner wall of the fixed sleeve and the connecting head, and the auxiliary plate is slidably connected to the inner side surface of the auxiliary groove.

[0011] Furthermore, the length of the connecting head close to one end of the hollow heat exchange strip is greater than the length of the auxiliary groove. When the connecting head close to one end of the conducting tube is embedded in the conducting tube, the connecting head away from one end of the conducting tube is blocking the auxiliary groove.

[0012] Furthermore, the fixing sleeve is fixedly connected to a mounting plate near one end of the hollow support bar, and fixing holes corresponding to the internally threaded short tube are opened on both sides of the surface of the mounting plate. The inner side surface of the internally threaded short tube is threadedly connected with a locking stud, the thickness of the mounting plate is greater than the length of the internally threaded short tube, and the head size of the locking stud is greater than the size of the fixing hole.

[0013] Furthermore, an entry groove and a conducting cavity are sequentially provided inside the conducting tube, the diameter of the entry groove is smaller than the diameter of the conducting cavity, the inner wall of the conducting tube is annular and equidistantly provided with a plurality of guide grooves connecting the conducting cavity, the inner side surface of the guide groove is slidably connected with a guide rod, a sealing spring is fixedly connected between the inner wall of the guide groove and the guide rod, all the guide rods are fixedly connected with the same sealing plate at one end away from the sealing spring, the sealing plate can close the entry groove, and the outer side surface of the connecting head close to one end of the conducting tube is annular and equidistantly provided with a plurality of grooves.

[0014] Furthermore, the shape and size of the entry groove are compatible with the end of the connection head close to the conductive tube. When the connection head is inserted into the conductive cavity, the groove connects the conductive cavity and the hollow heat exchange strip.

[0015] Compared with the prior art, the reactive power compensation device provided by the present invention has the following beneficial effects:

[0016] 1. The reactive power compensation device installs and supports the reactive compensation capacitor by arranging hollow support bars and hollow heat exchange bars, so that the reactive compensation capacitor can be in direct contact with the hollow heat exchange bars. When cooling water passes through the hollow heat exchange bars, it can directly exchange heat with the reactive compensation capacitor, thereby efficiently cooling the reactive compensation capacitor. With the cooperation of the cooling fan, the temperature inside the reactive compensation cabinet can be effectively controlled.

[0017] 2. The reactive power compensation device can facilitate the installation or disassembly of the hollow heat exchange plate through the mutual cooperation between the connection head, the fixing sleeve, the mounting plate and the conducting pipe, so as to facilitate the subsequent maintenance or overhaul.

[0018] 3. The reactive power compensation device can self-seal the conduction pipe after the connection head is withdrawn through the cooperation between the entry slot, the conduction cavity, the sealing plate, the guide rod and the sealing spring. Therefore, when installing the reactive power compensation capacitor, the hollow heat exchange strips can be installed according to the actual number and installation position required, so that the number of hollow heat exchange strips is more reasonable, which is conducive to the efficient circulation of cooling water during the cooling process, and thus can effectively improve the cooling efficiency of the reactive compensation capacitor, so that the reactive compensation capacitor can continuously and stably perform reactive power compensation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of a partial cross-sectional structure of a reactive power compensation cabinet provided in an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the connection structure between the hollow heat exchange bar and the hollow support bar provided in an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of the structure of a reactive compensation capacitor and a hollow heat exchange strip in a separated state provided by an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the structure of the hollow heat exchange bar and the hollow support bar in a separated state provided in an embodiment of the present invention;

[0025] Figure 6 A schematic diagram of a partial cross-sectional structure of a hollow heat exchange strip, a fixing sleeve, and a conducting pipe provided in an embodiment of the present invention;

[0026] Figure 7 The embodiment of the present invention provides Figure 6 The enlarged structural diagram at A in the middle;

[0027] Figure 8 A schematic diagram of the internal structure of a conducting tube provided in an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1. Reactive power compensation capacitor; 2. Reactive power compensation cabinet; 201. Cooling fan; 202. Heat sink; 3. Hollow support bar; 31. Hollow heat exchange bar; 32. Cold water tank; 33. Circulation pump; 34. Pump suction pipe; 35. Pumping pipe; 36. Infusion pipe; 37. Short pipe; 38. Control valve; 39. Bracket; 310. Cooling coil; 311. Cooling fan; 312. Ventilation slot; 313. Return pipe; 4. Connecting bar; 41. Mounting hole; 42 , connecting plate; 43, hole groove; 44, bolt; 45, nut; 5, conducting tube; 51, internal thread short tube; 52, fixing sleeve; 53, connecting head; 54, guide groove; 55, guide block; 56, tension spring; 57, auxiliary groove; 58, auxiliary plate; 59, mounting plate; 510, fixing hole; 511, locking stud; 6, entry groove; 61, conducting cavity; 62, guide groove; 63, guide rod; 64, sealing spring; 65, sealing plate; 66, slotting. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. Example 1

[0031] See also Figure 1-Figure 7 A reactive power compensation device comprises a reactive power compensation capacitor 1 and a reactive power compensation cabinet 2 for installing the reactive power compensation capacitor 1, a cooling fan 201 is arranged on the top of the reactive power compensation cabinet 2, heat dissipation slots 202 are arranged on both sides of the reactive power compensation cabinet 2, a plurality of hollow support bars 3 are symmetrically fixedly installed on both sides of the inner wall of the reactive power compensation cabinet 2 from bottom to top, a hollow heat exchange bar 31 is installed between the hollow support bars 3 on both sides, an installation cavity is arranged at the bottom of the reactive power compensation cabinet 2, a cold water tank 32 is installed on the inner wall of the installation cavity, a circulating pump 33 is installed at the bottom of the installation cavity, a pump suction pipe 34 is fixedly connected between the pump suction end of the circulating pump 33 and the cold water tank 32, and a pump delivery end of the circulating pump 33 is fixedly connected to the cold water tank 32. A pumping pipe 35 is connected, and a liquid infusion pipe 36 is fixedly connected to the end of the pumping pipe 35. A bracket 39 is installed inside the installation cavity. A cooling coil 310 is installed on one side of the bracket 39. The discharge end of the cooling coil 310 is fixedly connected to the cold water tank 32. The liquid inlet end of the cooling coil 310 is fixedly connected to a return pipe 313. Short pipes 37 are fixedly connected between the hollow support bar 3 on one side and the liquid infusion pipe 36, and between the hollow support bar 3 on the other side and the return pipe 313. A control valve 38 is installed on the short pipe 37. A cooling fan 311 corresponding to the cooling coil 310 is installed on the bracket 39. Ventilation slots 312 corresponding to the cooling fan 311 are symmetrically opened on both sides of the inner wall of the installation cavity.

[0032] Connecting strips 4 are fixedly installed on both sides of the hollow heat exchange strip 31. The connecting strip 4 has a number of mounting holes 41 equidistantly opened along its length direction. A number of connecting plates 42 are fixedly connected to the side of the reactive compensation capacitor 1. The surface of the connecting plate 42 has hole grooves 43 corresponding to the mounting holes 41. The connecting plate 42 is connected and fixed to the connecting strip 4 by bolts 44 and nuts 45. When the connecting plate 42 is connected and fixed to the connecting strip 4, the bottom of the reactive compensation capacitor 1 contacts the surface of the hollow heat exchange strip 31.

[0033] It should be supplemented that the hollow support bar 3 and the hollow heat exchange bar 31 are both made of copper alloy material, so that the hollow support bar 3 and the hollow heat exchange bar 31 can be in contact with the high-temperature gas inside the reactive compensation cabinet 2 for heat exchange, and the hollow heat exchange bar 31 can directly contact with the reactive compensation capacitor 1 for efficient heat exchange, thereby making the cooling effect of the reactive compensation capacitor 1 better.

[0034] After the reactive compensation capacitor 1 is initially installed, the operator opens the control valve 38 at the corresponding position according to the installation position of the reactive compensation capacitor 1. In the subsequent working process, the outside air is transported to the inside of the reactive compensation cabinet 2 through the cooling fan 201, and the gas entering the inside will flow downward and be discharged to the outside from the heat dissipation slot 202. In addition, during the gas flow process, it contacts the surface of the reactive compensation capacitor 1 inside the reactive compensation cabinet 2 for heat exchange, and at the same time, it can also carry the high-temperature gas inside the reactive compensation cabinet 2 to flow synchronously and discharge it to the outside of the cabinet, so that the temperature inside the reactive compensation cabinet 2 is reduced;

[0035] While the cooling fan 201 is working, the circulation pump 33 and the cooling fan 311 are in working state synchronously. The circulation pump 33 transports the low-temperature water in the cold water tank 32 to the infusion pipe 36, and transports it to the corresponding hollow support bar 3 through the short pipe 37. The low-temperature water after entering will pass through the hollow support bar 3 and flow into the hollow heat exchange bar 31, and then flow from the other end of the hollow support bar 3 to the hollow support bar 3 on this side, and flow from the short pipe 37 on this side to the return pipe 313. The liquid entering the return pipe 313 will flow from the end of the return pipe 313 to the cooling coil 310, and finally flow from the end of the cooling coil 310 to the cold water tank 32;

[0036] In the above process, when cold water flows through the hollow heat exchange bar 31, it will directly contact and exchange heat with the reactive compensation capacitor 1, thereby making the cooling effect of the reactive compensation capacitor 1 better. When the liquid after heat exchange flows to the cooling coil 310, it is cooled by the cooling fan 311, so that the temperature of the liquid returning to the cold water tank 32 is reduced. Example 2

[0037] See also Figure 5 , Figure 7The present embodiment provides a technical solution on the basis of the above-mentioned embodiment. The surface of the hollow support bar 3 is fixedly connected with a plurality of conducting tubes 5 at equal intervals along its length direction. The surface of the hollow support bar 3 is fixedly connected with internally threaded short tubes 51 located on both sides of the conducting tube 5. The outer side surfaces at both ends of the hollow heat exchange bar 31 are slidably connected with fixed sleeves 52. The inner side surfaces of the fixed sleeves 52 are fixedly connected with connecting heads 53. The end of the connecting head 53 close to the conducting tube 5 is inserted into the interior of the conducting tube 5, and the shape and specifications of the connecting head 53 close to the end of the conducting tube 5 are adapted to the internal groove body of the conducting tube 5. The end of the connecting head 53 close to the hollow heat exchange bar 31 is slidably connected to the inner side surface of the hollow heat exchange bar 31, and the shape and specifications of the connecting head 53 close to the end of the hollow heat exchange bar 31 are adapted to the internal cavity of the hollow heat exchange bar 31. The connecting head 53 can connect the conducting tube 5 and the hollow heat exchange bar 31.

[0038] Furthermore, guide grooves 54 are symmetrically provided on both sides of the hollow heat exchange strip 31, a guide block 55 is fixedly connected to the inner side surface of the fixed sleeve 52, a tension spring 56 is fixedly connected between the side of the guide groove 54 away from the conducting tube 5 and the guide block 55, an auxiliary groove 57 extending to the end of the hollow heat exchange strip 31 is provided on the inner side surface of the guide groove 54, an auxiliary plate 58 is fixedly connected between the inner wall of the fixed sleeve 52 and the connecting head 53, and the auxiliary plate 58 is slidably connected to the inner side surface of the auxiliary groove 57.

[0039] It should be noted that the length of the connecting head 53 close to one end of the hollow heat exchange strip 31 is greater than the length of the auxiliary groove 57. When the connecting head 53 close to one end of the conducting tube 5 is in a state of being embedded in the conducting tube 5, the connecting head 53 away from one end of the conducting tube 5 is in a state of blocking the auxiliary groove 57.

[0040] It should be supplemented that the fixing sleeve 52 is fixedly connected to a mounting plate 59 near one end of the hollow support bar 3, and fixing holes 510 corresponding to the internally threaded short tube 51 are opened on both sides of the surface of the mounting plate 59, and the inner side surface of the internally threaded short tube 51 is threadedly connected with a locking stud 511, the thickness of the mounting plate 59 is greater than the length of the internally threaded short tube 51, and the head size of the locking stud 511 is greater than the size of the fixing hole 510.

[0041] When the hollow heat exchange bar 31 needs to be disassembled, maintained or replaced, the operator manually twists the locking studs 511 on both sides of the hollow heat exchange bar 31 and removes it. At this time, under the traction of the rebound force of the tension spring 56, the fixing sleeves 52 on both sides move toward each other, so that the fixing sleeves 52 move and drive the connecting heads 53 at both ends to synchronously withdraw from the inside of the conducting tubes 5 on both sides, so that the hollow heat exchange bar 31 can be removed;

[0042] When installation is required, the operator aligns the position of the connecting heads 53 on both sides with the conducting tube 5, and then pushes the fixing sleeves 52 on both sides. The movement of the fixing sleeves 52 drives the auxiliary plate 58 to move, and the movement of the auxiliary plate 58 drives the connecting head 53 to move, so that the connecting head 53 can be inserted into the inside of the conducting tube 5. When the fixing sleeve 52 moves, it also drives the mounting plate 59 to move, so that the mounting plate 59 can be sleeved on the outside of the internally threaded short tube 51. Afterwards, the operator screws the locking stud 511 into the internally threaded short tube 51, so that under the restriction of the head of the locking stud 511, the mounting plate 59 and the internally threaded short tube 51 can be firmly fixed to complete the installation of the hollow heat exchange strip 31. Example 3

[0043] See also Figure 7-Figure 8 The present embodiment provides a technical solution based on the above embodiment. The inside of the conducting tube 5 is provided with an entry groove 6 and a conducting cavity 61 in sequence. The diameter of the entry groove 6 is smaller than the diameter of the conducting cavity 61. The inner wall of the conducting tube 5 is annular and equidistantly provided with a plurality of guide grooves 62 connected to the conducting cavity 61. A guide rod 63 is slidably connected to the inner side surface of the guide groove 62. A sealing spring 64 is fixedly connected between the inner wall of the guide groove 62 and the guide rod 63. The ends of all the guide rods 63 away from the sealing spring 64 are fixedly connected with the same sealing plate 65. The sealing plate 65 can close the entry groove 6. The outer side surface of the connection head 53 close to one end of the conducting tube 5 is annular and equidistantly provided with a plurality of grooves 66.

[0044] It should be added that the shape and size of the entry groove 6 are compatible with the end of the connection head 53 close to the conductive tube 5. When the connection head 53 is inserted into the conductive cavity 61, the groove 66 connects the conductive cavity 61 with the hollow heat exchange strip 31.

[0045] After the connecting head 53 is inserted into the entry groove 6, it continues to move and contacts the sealing plate 65 and drives the sealing plate 65 to move synchronously. The movement of the sealing plate 65 drives the guide rod 63 to move and stretch the sealing spring 64. As the connecting head 53 continues to go deeper, the groove 66 on its side moves into the conducting cavity 61, so that the groove 66 can connect the conducting pipe 5 with the hollow heat exchange bar 31, so that the cooling water in the hollow support bar 3 can flow into the hollow heat exchange bar 31.

[0046] The internal sealing spring 64 of the conducting tube 5 that is not connected to the hollow heat exchange strip 31 is in a stretched state. Therefore, under the action of its rebound force, the sealing plate 65 can stably seal the entrance groove 6, so that the cooling water entering the conducting tube 5 will not flow out from there. Therefore, in actual application, a suitable number of hollow heat exchange strips 31 can be selected according to actual needs, so that the flow heat exchange efficiency of the cooling water in the hollow heat exchange strips 31 is significantly improved.

[0047] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A reactive power compensation device, comprising a reactive power compensation capacitor (1) and a reactive power compensation cabinet (2) for mounting the reactive power compensation capacitor (1), wherein a cooling fan (201) is arranged on the top of the reactive power compensation cabinet (2), and heat dissipation slots (202) are arranged on both sides of the reactive power compensation cabinet (2), characterized in that: A plurality of hollow support bars (3) are symmetrically fixedly installed on both sides of the inner wall of the reactive power compensation cabinet (2) from bottom to top, and a hollow heat exchange bar (31) is installed between the hollow support bars (3) on both sides. A mounting cavity is provided at the bottom of the reactive power compensation cabinet (2), a cold water tank (32) is installed on the inner wall of the mounting cavity, a circulating pump (33) is installed at the bottom of the mounting cavity, a pump suction pipe (34) is fixedly connected between the pump suction end of the circulating pump (33) and the cold water tank (32), a pump delivery pipe (35) is fixedly connected to the pump delivery end of the circulating pump (33), and a liquid infusion pipe (36) is fixedly connected to the end of the pump delivery pipe (35), and a bracket (39) is installed inside the mounting cavity. A cooling coil (310) is installed on one side of the bracket (39); a liquid discharge end of the cooling coil (310) is fixedly connected to a cold water tank (32); a liquid inlet end of the cooling coil (310) is fixedly connected to a return pipe (313); a short pipe (37) is fixedly connected between the hollow support bar (3) and the liquid infusion pipe (36) on one side and between the hollow support bar (3) and the return pipe (313) on the other side; a control valve (38) is installed on the short pipe (37); a cooling fan (311) corresponding to the cooling coil (310) is installed on the bracket (39); and ventilation slots (312) corresponding to the cooling fan (311) are symmetrically provided on both sides of the inner wall of the installation cavity; Connecting strips (4) are fixedly mounted on both sides of the hollow heat exchange strip (31), and the connecting strip (4) is provided with a plurality of mounting holes (41) at equal intervals along its length direction. A plurality of connecting plates (42) are fixedly connected to the side of the reactive power compensation capacitor (1), and a hole groove (43) corresponding to the mounting holes (41) is provided on the surface of the connecting plate (42). The connecting plate (42) and the connecting strip (4) are connected and fixed by bolts (44) and nuts (45). When the connecting plate (42) and the connecting strip (4) are connected and fixed, the bottom of the reactive power compensation capacitor (1) contacts the surface of the hollow heat exchange strip (31); The surface of the hollow support bar (3) is fixedly connected to a plurality of conducting tubes (5) at equal intervals along its length direction; the surface of the hollow support bar (3) is fixedly connected to internally threaded short tubes (51) located on both sides of the conducting tubes (5); the outer side surfaces of both ends of the hollow heat exchange bar (31) are slidably connected to fixed sleeves (52); the inner side surfaces of the fixed sleeves (52) are fixedly connected to connecting heads (53); the connecting heads (53) are plugged into the interior of the conducting tubes (5) at one end close to the conducting tubes (5). , and the shape and specifications of the connecting head (53) at one end close to the conducting tube (5) are compatible with the internal groove of the conducting tube (5), the end of the connecting head (53) close to the hollow heat exchange strip (31) is slidably connected to the inner side of the hollow heat exchange strip (31), and the shape and specifications of the end of the connecting head (53) close to the hollow heat exchange strip (31) are compatible with the internal cavity of the hollow heat exchange strip (31), and the connecting head (53) can connect the conducting tube (5) and the hollow heat exchange strip (31); Guide grooves (54) are symmetrically provided on both sides of the hollow heat exchange strip (31); a guide block (55) is fixedly connected to the inner side surface of the fixed sleeve (52); a tension spring (56) is fixedly connected between the side of the guide groove (54) away from the conducting tube (5) and the guide block (55); an auxiliary groove (57) extending to the end of the hollow heat exchange strip (31) is provided on the inner side surface of the guide groove (54); an auxiliary plate (58) is fixedly connected between the inner wall of the fixed sleeve (52) and the connecting head (53); and the auxiliary plate (58) is slidably connected to the inner side surface of the auxiliary groove (57); The fixing sleeve (52) is fixedly connected to a mounting plate (59) at one end close to the hollow support bar (3); fixing holes (510) corresponding to the internally threaded short tube (51) are provided on both sides of the surface of the mounting plate (59); a locking stud (511) is threadedly connected to the inner side surface of the internally threaded short tube (51); the thickness of the mounting plate (59) is greater than the length of the internally threaded short tube (51), and the head size of the locking stud (511) is greater than the size of the fixing hole (510).

2. A reactive power compensation device according to claim 1, characterized in that: The hollow support bar (3) and the hollow heat exchange bar (31) are both made of copper alloy material.

3. A reactive power compensation device according to claim 1, characterized in that: The length of the connection head (53) at one end close to the hollow heat exchange strip (31) is greater than the length of the auxiliary groove (57); when the connection head (53) at one end close to the conducting tube (5) is in a state of being embedded in the conducting tube (5), the connection head (53) at one end away from the conducting tube (5) is in a state of blocking the auxiliary groove (57).

4. A reactive power compensation device according to claim 3, characterized in that: The inside of the conducting tube (5) is provided with an entry groove (6) and a conducting cavity (61) in sequence, the diameter of the entry groove (6) being smaller than the diameter of the conducting cavity (61), the inner wall of the conducting tube (5) being provided with a plurality of guide grooves (62) in a circular ring shape and being equidistantly connected to the conducting cavity (61), the inner side surface of the guide groove (62) being slidably connected to a guide rod (63), a sealing spring (64) being fixedly connected between the inner wall of the guide groove (62) and the guide rod (63), the ends of all the guide rods (63) being away from the sealing spring (64) being fixedly connected to the same sealing plate (65), the sealing plate (65) being capable of sealing the entry groove (6), and the outer side surface of the connecting head (53) close to one end of the conducting tube (5) being provided with a plurality of grooves (66) in a circular ring shape and being equidistantly connected to each other.

5. A reactive power compensation device according to claim 4, characterized in that: The shape and size of the entry groove (6) are compatible with the portion of the connection head (53) close to one end of the conduction tube (5); when the connection head (53) is inserted into the conduction cavity (61), the groove (66) connects the conduction cavity (61) and the hollow heat exchange strip (31).

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