A box-type substation for reactive power compensation

Abstract

The application relates to the technical field of transformer substations, and relates to a box-type transformer substation with reactive power compensation, which comprises a support frame, the inner side of the support frame is respectively provided with a capacitor chamber, a communication and electric quantity collection chamber and an automation chamber, a dehumidification mechanism is arranged in the capacitor chamber, a wind port cleaning mechanism is arranged on the dehumidification mechanism, the wind port cleaning mechanism is installed on an adjusting mechanism, a transformer is fixed in a voltage transformation chamber, and a heat exchange mechanism is arranged on the transformer; the humidity sensor is installed on the adjusting mechanism at the same time as being connected with part of air exchangers in the dehumidification mechanism and the wind port cleaning mechanism, the humidity monitoring range is expanded, the air flow direction in the capacitor chamber can be adjusted, the dehumidification effect is guaranteed, the air flow passage for dehumidification can be simultaneously cleaned, and dust accumulation is prevented; the anti-fouling mechanism can clean and scrape the cooling water pipeline structure in the process of power change of the heat exchange mechanism, and prevents the pipeline structure from being blocked.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of transformer substations, and particularly relates to a box-type transformer substation with reactive power compensation. BACKGROUND

[0002] The box-type transformer substation is a compact transformer facility integrating high-voltage switchgear, distribution transformer and low-voltage distribution device, and has the characteristics of compact structure, convenient installation and flexible movement. The core function of the box-type transformer substation is to convert high-voltage power into low-voltage power and complete the distribution and control of electric energy. The box-type transformer substation can also integrate auxiliary functions such as reactive power compensation and intelligent monitoring. The box-type transformer substation is particularly suitable for occasions with tight power supply, fast power supply or frequent migration, and has the advantages of high efficiency, safety and economy. The configuration of a capacitor compensator in the box-type transformer substation can improve the power factor, reduce line loss and optimize power quality.

[0003] The existing box-type transformer substations with reactive power compensation function can basically meet the daily use requirements. However, when used in harsh environments such as ships, wind power or photovoltaic power, the dehumidification of the capacitor cabinet needs to be considered. A fan needs to be installed inside to increase the air flow speed. However, the air outlet position is prone to static dust particles. If not cleaned for a long time, the capture effect of particles will increase, and more dust will be attached. In addition, the installation of a dust screen requires regular replacement or cleaning of the screen cover. At the same time, the transformer inside the box-type transformer substation needs to rely on electronic fluorinated liquid for forced cooling in extreme environments. When the transformer load is high or the environmental temperature is extremely high, the temperature of the electronic fluorinated liquid filled inside will rise significantly. An additional heat exchange circulation mechanism needs to be used to remove the heat of the fluorinated liquid with external cooling water. In order to match the heat load, the power of the circulating pump needs to be dynamically adjusted. This power change causes the flow and flow rate of the cooling water flowing through the heat exchanger to change, which easily causes local overheating or supercooling of the cooling water at the inlet and outlet of the heat exchanger. This change promotes the precipitation and crystallization of minerals dissolved in the cooling water, which further adheres to the inner wall of the heat exchanger pipe to form scale, reduces the effective flow area of the heat exchanger pipe, and weakens the heat dissipation capacity of the entire heat exchange circulation mechanism, which may cause overheating of the equipment. Therefore, it is necessary to design a box-type transformer substation with reactive power compensation. SUMMARY

[0004] The purpose of the present application is to provide a box-type transformer substation with reactive power compensation, which has a simple structure and reasonable design.

[0005] The present application achieves the above-mentioned purposes through the following technical solutions:

[0006] The utility model provides a kind of box-type substation of reactive power compensation, including support frame, the top of the support frame is provided with top cover, the inside one side of the support frame is provided with capacitor chamber, communication and electric quantity collection chamber and automation chamber respectively, one side of the communication and electric quantity collection chamber is provided with low voltage cabinet chamber, one side of the low voltage cabinet chamber is provided with high voltage cabinet chamber, one side of the high voltage cabinet chamber is provided with transformer room, the inside of the capacitor chamber is provided with dehumidification mechanism, the dehumidification mechanism is provided with air port cleaning mechanism, the air port cleaning mechanism is installed on adjusting mechanism, the transformer room is fixed with transformer, the transformer is provided with heat exchange mechanism, the heat exchange mechanism is provided with anti-fouling mechanism;

[0007] The adjusting mechanism includes a clamping frame connected to the air port cleaning mechanism, a connecting shaft is clamped in the clamping frame, the connecting shaft is fixed to a telescopic rod, the telescopic rod is slidingly connected to a corner bracket, the corner bracket is connected to the dehumidification mechanism, the corner bracket is rotatably connected to an adjusting block in the middle, the adjusting block is connected to an adjusting screw, the adjusting screw is rotatably connected in the capacitor chamber, the bottom end of the adjusting screw is fixedly connected to the output end of an adjusting motor, the adjusting motor is fixed in a protective bracket, the protective bracket is fixed to the bottom of the support frame, the corner bracket is fixedly connected to a mounting plate, and a humidity sensor is symmetrically mounted on the mounting plate.

[0008] As a further optimization scheme of the present application, the dehumidification mechanism includes a capacitor cabinet door rotatably connected to the capacitor chamber, a plurality of bottom air outlets are uniformly formed on one side and bottom of the capacitor cabinet door, a plurality of first air fans are uniformly arranged on the inner side of the capacitor cabinet door near the bottom air outlets, an outer baffle is arranged on the outer side of the capacitor cabinet door, a plurality of air vents are formed in the outer baffle, a plurality of top air outlet nets are symmetrically arranged on one side and top of the capacitor cabinet door, and a plurality of third air fans are symmetrically arranged on one side of the low voltage cabinet chamber near the top air outlet nets.

[0009] As a further optimization scheme of the present application, the dehumidification mechanism further includes guide rails symmetrically mounted on the inner walls of the capacitor chamber, a lifting frame is slidingly connected to the guide rails, and the corner bracket is rotatably connected to the lifting frame.

[0010] As a further optimization scheme of the present application, the air port cleaning mechanism includes sliding guide rails symmetrically mounted on the inner walls of the capacitor cabinet door, a sliding block is slidingly connected to the sliding guide rails, a support table is arranged on the sliding block, the support table is slidingly connected in a through slot formed in the capacitor cabinet door, and the clamping frame is fixed to the support table.

[0011] As a further optimization scheme of the present application, the support shaft is rotatably connected between the support tables, a cleaning roller brush is sleeved on the support shaft, the cleaning roller brush is located between the capacitor cabinet door and the outer baffle, first gears are fixedly installed at both ends of the support shaft, the first gears are in meshing connection with second gears, the second gears are rotatably connected to the support tables, the second gears are in meshing connection with a rack, and the rack is fixed to the capacitor cabinet door.

[0012] As a further optimization scheme of the present application, the heat exchange mechanism comprises a plate heat exchanger fixed in the pressure changing chamber, a first pipeline and a second pipeline are arranged on the plate heat exchanger, a heat exchange pump is connected to the first pipeline, the heat exchange pump is in communication with a fluorinated liquid chamber in the transformer through a pipeline, the second pipeline is in communication with the fluorinated liquid chamber in the transformer, a water inlet pipe and a water outlet pipe are arranged on the plate heat exchanger respectively, and a water receiving pipe is fixedly connected to the water inlet pipe and the water outlet pipe.

[0013] As a further optimization scheme of the present application, the anti-fouling mechanism comprises an intermediate pipe rotatably installed at one end in the water inlet pipe and the water outlet pipe, the other end of the intermediate pipe is rotatably connected to the water receiving pipe, annular sealing rings are arranged at the connection positions of the intermediate pipe with the water inlet pipe, the water outlet pipe and the water receiving pipe, a pipeline scraper is arranged in the intermediate pipe, and the pipeline scraper is attached to the inner walls of the water inlet pipe, the water outlet pipe and the water receiving pipe.

[0014] As a further optimization scheme of the present application, first and second support shafts are rotatably connected to the plate heat exchanger, connecting wheels are arranged on the first and second support shafts, connecting belts are wound around the connecting wheels, the connecting belts are wound around the intermediate pipe, first and second transmission wheels are arranged on the first and second support shafts respectively, transmission belts are wound around the first and second transmission wheels, the transmission belts are sleeved on support wheels, and the support wheels are rotatably connected to the pressure changing chamber through supports.

[0015] As a further optimization scheme of the present application, a piston plate is fixed to the transmission belt, the piston plate is slidably connected to a pressure pipe, a sealing sleeve is slidably connected to the pressure pipe, the sealing sleeve is fixed to the piston plate, a spring is arranged at the top of the piston plate, the top end of the spring is fixed to a microporous plate, air passing micropores are uniformly arranged on the microporous plate, the microporous plate is fixed to the top end of the pressure pipe, and the bottom end of the pressure pipe is in communication with the first pipeline.

[0016] The present application has the following beneficial effects:

[0017] 1. The present application installs the humidity sensor through the adjusting mechanism, and the process of rotating the adjusting screw driven by the motor will move the corner support and the mounting plate along the axis direction of the adjusting screw, which expands the monitoring range of the humidity sensor; the first air exchanger, the second air exchanger and the third air exchanger operate simultaneously in the dehumidification process, the first air exchanger and the third air exchanger discharge the air inside the capacitor chamber, and the adjusting block will pull the lifting frame and the second air exchanger to slide along the guide rail during the movement, adjust the height range of the second air exchanger, adjust the air flow direction inside the capacitor chamber during the dehumidification process, and ensure the dehumidification effect.

[0018] 2. In the process of sliding the adjusting block along the axis of the adjusting screw, the support table is moved up and down along the sliding guide rail through the connecting shaft connecting the clamping frame, and in the process of moving the support table with the sliding block, the second gear will rotate in the process of moving up and down through the meshing rack, and at the same time, the first gear and the cleaning roller brush will be driven to rotate in the opposite direction, and then the cleaning roller brush will rotate to clean the bottom air outlet and the air vent, preventing the air flow slot from being covered with dust.

[0019] 3. When the electronic fluorination liquid temperature is too high in extreme environment, the heat pump will extract the electronic fluorination liquid inside the transformer, and discharge it into the plate heat exchanger through the first pipeline for heat exchange, and then re-enter the fluorination liquid chamber inside the transformer from the second pipeline, in the process, the water inlet pipe and the water outlet pipe are respectively connected with the external water pump and the water storage tank, forming a circulating structure of cooling water, in the process of adjusting the output power of the heat pump following the temperature change, the pressure in the first pipeline changes, which is transmitted to the pressure pipe, and then the spring expansion makes the piston plate balanced, in the process of moving up and down following the pressure change, the second transmission wheel and the first transmission wheel are driven to rotate synchronously through the transmission belt, and then the connecting belt is driven to operate through the connecting wheels on the first and second shafts, the intermediate pipe is rotated by the connecting belt, and in the process of rotating the intermediate pipe, the inner walls of the water inlet pipe and the water outlet pipe can be cleaned by the pipeline scraper, preventing the inner walls of the water inlet pipe and the water outlet pipe connected with the cooling water from being affected by the scale, affecting the heat exchange efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the three-dimensional diagram of the overall structure of the present application;

[0021] Figure 2 is the top view of part of the structure of the present application;

[0022] Figure 3 is the schematic diagram of the local structure of the present application;

[0023] Figure 4 is the internal structure diagram of the capacitor chamber in the present application;

[0024] Figure 5 is Figure 4Partial enlarged view of area A in the figure;

[0025] Figure 6 Assembly schematic of the dehumidification mechanism and the adjusting mechanism in the application;

[0026] Figure 7 is Figure 6 Partial enlarged view of area B in the figure;

[0027] Figure 8 Installation structure schematic of the air outlet cleaning mechanism in the application;

[0028] Figure 9 Installation structure schematic of the anti-fouling mechanism in the application;

[0029] Figure 10 Exploded structure schematic of the anti-fouling mechanism in the application.

[0030] In the figure: 1, support frame; 2, top cover plate; 3, capacitor chamber; 4, dehumidification mechanism; 5, air outlet cleaning mechanism; 6, adjusting mechanism; 7, voltage conversion chamber; 8, voltage converter; 9, anti-fouling mechanism; 10, heat exchange mechanism; 11, communication and electric quantity collection chamber; 12, automation chamber; 13, low-voltage cabinet chamber; 14, high-voltage cabinet chamber; 101, plate heat exchanger; 102, first pipeline; 103, second pipeline; 104, heat exchange pump; 105, water inlet pipe; 106, water outlet pipe; 107, water receiving pipe; 401, capacitor cabinet door; 402, bottom air outlet; 403, first air exchange fan; 404, outer baffle; 405, air vent; 406, guide rail; 407, lifting frame; 408, second air exchange fan; 409, top air outlet net; 410, third air exchange fan; 411, mounting plate; 412, humidity sensor; 501, sliding guide rail; 502, sliding block; 503, support table; 504, support shaft; 505, cleaning roller brush; 506, first gear; 507, second gear; 508, rack; 601, clamping frame; 602, connecting shaft; 603, telescopic rod; 604, corner support; 605, adjusting block; 606, adjusting lead screw; 607, adjusting motor; 608, protection support; 901, intermediate pipe; 902, pipeline scraper; 903, connecting belt; 905, transmission belt; 906, support wheel; 907, piston plate; 908, pressure pipe; 909, sealing sleeve; 910, spring; 911, microporous plate; 912, first support shaft; 913, second support shaft; 914, first transmission wheel; 915, second transmission wheel. DETAILED DESCRIPTION

[0031] The application will be further described in detail below with reference to the drawings. It is necessary to point out here that the following specific embodiments are only used to further illustrate the application and cannot be understood as limiting the scope of protection of the application. Those skilled in the art can make some non-essential improvements and adjustments to the application according to the above application content.

[0032] Embodiment: please refer to Figures 1-10 A box-type substation for reactive power compensation comprises a support frame 1, a top cover plate 2 is arranged on the top of the support frame 1, the top cover plate 2 is fixed on the support frame 1 by sheet metal parts, rainwater is prevented from remaining on the top of the box-type substation, the risk of leakage is reduced, the sealing property of the box body can be protected, the service life of the equipment is prolonged, the support frame 1 serves as the framework structure of the box-type substation and provides overall rigidity and stability, a capacitor chamber 3, a communication and power acquisition chamber 11 and an automation chamber 12 are arranged on one side of the inside of the support frame 1, respectively, the power acquisition equipment and the communication equipment are arranged in the communication and power acquisition chamber 11 in an up-down arrangement and are isolated from each other by a partition plate, a low-voltage cabinet chamber 13 is arranged on one side of the communication and power acquisition chamber 11, a high-voltage cabinet chamber 14 is arranged on one side of the low-voltage cabinet chamber 13, and a transformer chamber 7 is arranged on one side of the high-voltage cabinet chamber 14, the entire support frame 1 is fixed by light-weight plate structures, the sheet metal parts are connected and fixed, and the inside of the support frame 1 is divided into the capacitor chamber 3, the communication and power acquisition chamber 11, the automation chamber 12, the transformer chamber 7, the low-voltage cabinet chamber 13 and the high-voltage cabinet chamber 14 by the installation of the partition plate inside, the capacitor chamber 3 is provided with a reactive power compensation capacitor, the power factor is improved, and the power grid loss is reduced, the communication module built-in in the communication and power acquisition chamber 11 can be used for remote monitoring and data transmission, the power acquisition equipment installed inside is used for power acquisition, the voltage, current and power and other electric energy parameters can be monitored in real time, the circuit breaker and the metering instrument and other facilities are installed inside the low-voltage cabinet chamber 13, the low-voltage power supply is distributed, and the low-voltage line is protected, the disconnector and the protection relay are installed in the high-voltage cabinet chamber 14 and are mainly responsible for the high-voltage incoming line and outgoing line control, the transformer chamber 7 is an independent closed space, the core equipment transformer 8 is installed, the electromagnetic interference and heat are isolated, the dehumidification mechanism 4 is arranged inside the capacitor chamber 3, the dehumidification mechanism 4 is responsible for accelerating the gas circulation speed inside the box-type substation and exchanging air with the outside, reducing the humidity to avoid the short circuit or insulation aging of the electrical equipment due to the humidity, the air inlet cleaning mechanism 5 is arranged on the dehumidification mechanism 4, the air exchange channel is prevented from being blocked, the dehumidification efficiency is maintained, and the maintenance frequency is reduced, the air inlet cleaning mechanism 5 is installed on the adjusting mechanism 6, the heat exchange mechanism 10 is arranged on the transformer 8, the heat exchange mechanism 10 is connected to the electronic fluorination liquid cavity in the transformer 8 and is responsible for cooling treatment of the electronic fluorination liquid with a relatively high temperature, and the anti-fouling mechanism 9 is arranged on the heat exchange mechanism 10 to prevent the cooling water pipeline connection from being fouled;

[0033] The dehumidification mechanism 4 comprises a capacitor cabinet door 401 connected to the capacitor chamber 3 through a hinge, a bottom air outlet 402 is uniformly arranged on one side of the bottom of the capacitor cabinet door 401, a first air fan 403 is uniformly arranged on the inner side of the capacitor cabinet door 401 close to the bottom air outlet 402, the first air fan 403 can discharge the internal gas from the bottom air outlet 402 when working, an outer baffle 404 is arranged on the outer side of the capacitor cabinet door 401, an air vent 405 is formed on the outer baffle 404 through stamping, the air vent 405 is downwardly opened to prevent rainwater from entering obliquely, a top air outlet net 409 is symmetrically arranged on the top of one side of the capacitor cabinet door 401, and a third air fan 410 is symmetrically arranged on the side of the low-voltage cabinet chamber 13 close to the top air outlet net 409, the third air fan 410 is used as a fixed air point and an auxiliary dehumidification position to discharge the internal air from the top air outlet net 409, the dehumidification mechanism 4 further comprises guide rails 406 symmetrically arranged on the inner wall of the capacitor chamber 3, a lifting frame 407 is slidably connected to the guide rails 406, and second air fans 408 are uniformly arranged on the lifting frame 407, the first air fan 403, the second air fan 408 and the third air fan 410 are all composed of a brushless motor and a fan blade, the brushless motor is selected according to the actual use condition, the guide rails 406 are used for slidably supporting the second air fan 408, the second air fan 408 is arranged on the lifting frame 407 as a movable fan structure, and the height of the second air fan 408 can be changed to adjust the air flow in the capacitor chamber 3;

[0034] The air outlet cleaning mechanism 5 comprises sliding rails 501 symmetrically arranged on the inner wall of the capacitor cabinet door 401, sliding blocks 502 slidably connected to the sliding rails 501, support tables 503 fixedly connected to the sliding blocks 502 through bolts, the support tables 503 are slidably connected to the through slots formed in the capacitor cabinet door 401, a support shaft 504 is rotatably connected between the support tables 503, a cleaning roller brush 505 is fixedly sleeved on the support shaft 504, the cleaning roller brush 505 is attached to the bottom air outlet 402 and the air vent 405, the cleaning roller brush 505 can clean the bottom air outlet 402 and the air vent 405 at the same time in the rotating process, dust accumulation is prevented, first gears 506 are fixedly installed at the two ends of the support shaft 504, the first gears 506 are engaged with second gears 507, the second gears 507 are rotatably connected to the support tables 503 through bearings, the second gears 507 are engaged with a rack 508, and the rack 508 is fixed to the outer side of the capacitor cabinet door 401 through bolts; in the moving process of the support tables 503 and the sliding blocks 502, the second gears 507 will rotate in the up-down moving process of engaging with the rack 508, and simultaneously drive the first gears 506 and the cleaning roller brush 505 to rotate in the opposite direction, so that the cleaning roller brush 505 rotates to clean the bottom air outlet 402 and the air vent 405;

[0035] The adjusting mechanism 6 comprises a clamping frame 601 fixed on the support table 503 by bolts, a connecting shaft 602 clamped in the clamping frame 601, the clamping frame 601 and the connecting shaft 602 being separated from each other when the capacitor cabinet door 401 is in the non-closed state, the connecting shaft 602 being buckled on the clamping frame 601 when the capacitor cabinet door 401 is rotated and closed, the connecting shaft 602 being fixed on an extension rod 603, the extension rod 603 being slidingly connected to a corner support 604, one end of the corner support 604 being rotatably connected to the lifting frame 407, the middle part of the corner support 604 being rotatably connected to a support rod on one side of an adjusting block 605, the adjusting block 605 being connected to an adjusting lead screw 606 through a ball bearing, the adjusting lead screw 606 being rotatably connected in the capacitor chamber 3, the bottom end of the adjusting lead screw 606 being fixedly connected to the output end of an adjusting motor 607, the adjusting motor 607 being selected according to the actual use situation, the adjusting motor 607 being fixed in a protection support 608, the protection support 608 being fixed at the bottom of the support frame 1, the protection support 608 being used for closing and protecting the adjusting motor 607 to prevent the adjusting motor 607 from being damaged by water, the corner support 604 being provided with a mounting plate 411 fixed thereon by bolts, the mounting plate 411 being symmetrically provided with humidity sensors 412, the humidity sensors 412 collecting the humidity inside the capacitor chamber 3, and the humidity sensors 412 being connected to the first air exchanger 403, the second air exchanger 408 and the third air exchanger 410 in the dehumidification mechanism 4 through an external controller to perform dehumidification, the support frame 1 being provided with a dehumidification air inlet pipeline at the bottom, and the air pressure inside being adjusted during the dehumidification process;

[0036] The heat exchange mechanism 10 comprises a plate heat exchanger 101 fixed in the pressure changing chamber 7, the plate heat exchanger 101 is respectively provided with a first pipeline 102 and a second pipeline 103, the first pipeline 102 is connected with a heat exchange pump 104, the heat exchange pump 104 is communicated with the fluorinated liquid chamber in the transformer 8 through a pipeline, the second pipeline 103 is communicated with the fluorinated liquid chamber in the transformer 8, a temperature sensor for monitoring the temperature of the fluorinated liquid in real time is installed in the fluorinated liquid chamber in the transformer 8, when the temperature of the electronic fluorinated liquid is too high, the heat exchange pump 104 draws out the electronic fluorinated liquid in the transformer 8, and the electronic fluorinated liquid is discharged into the plate heat exchanger 101 through the first pipeline 102 to exchange heat, then the electronic fluorinated liquid reenters the fluorinated liquid chamber in the transformer 8 from the second pipeline 103, the plate heat exchanger 101 is respectively provided with a water inlet pipe 105 and a water outlet pipe 106, the water inlet pipe 105 and the water outlet pipe 106 are respectively connected with an external water pump and a water storage tank, according to the need, air cooling can be arranged to accelerate the cooling process of the cooling water, the anti-fouling mechanism 9 comprises a middle pipe 901 rotatably installed in the water inlet pipe 105 and the water outlet pipe 106, the other end of the middle pipe 901 is rotatably connected to a water receiving pipe 107, the threaded rods arranged on the water inlet pipe 105 and the water outlet pipe 106 are sleeved on the flanges of the water receiving pipe 107, the position of the water receiving pipe 107 is adjusted and fixed by two independent nuts, after being fixed, one end of the middle pipe 901 is attached to the water receiving pipe 107, and the other end of the middle pipe 901 is attached to the water inlet pipe 105 and the water outlet pipe 106, a ring-shaped sealing ring is arranged at the connection to ensure the sealing property of the connection, a pipeline scraper 902 is arranged in the middle pipe 901, the pipeline scraper 902 is attached to the inner walls of the water inlet pipe 105, the water outlet pipe 106 and the water receiving pipe 107, and the pipeline scraper 902 can clean the inner walls of the pipes during the rotation of the middle pipe 901 to prevent fouling, the plate heat exchanger 101 is rotatably connected with a first support shaft 912 and a second support shaft 913, the first support shaft 912 and the second support shaft 913 are both provided with a connecting wheel, a connecting belt 903 is wound around the connecting wheel, the connecting belt 903 is wound around the middle pipe 901, the first support shaft 912 and the second support shaft 913 are respectively provided with a first transmission wheel 914 and a second transmission wheel 915, the first transmission wheel 914 and the second transmission wheel 915 are both wound with a transmission belt 905, the transmission belt 905 is sleeved on a supporting wheel 906, the supporting wheel 906 is rotatably connected to the pressure changing chamber 7 through a support, the transmission belt 905 is fixed with a piston plate 907, the piston plate 907 is slidably connected to a pressure pipe 908, the pressure pipe 908 is sealingly and slidably connected with a sealing sleeve 909, the sealing sleeve 909 is fixed to the piston plate 907, the top of the piston plate 907 is provided with a spring 910, the top end of the spring 910 is fixed to a microporous plate 911, the microporous plate 911 is uniformly provided with air passing micropores, and the microporous plate 911 is fixed to the top end of the pressure pipe 908, the bottom end of the pressure pipe 908 is communicated with the first pipeline 102, the pressure in the pressure pipe 908 is consistent with the liquid pressure in the first pipeline 102,When the heat pump 104 power changes, the first pipe 102 internal pressure changes, which will be transmitted to the pressure pipe 908, and then through the spring 910 extension and contraction to make the piston plate 907 force balance. The piston plate 907 follows the process of up and down movement of pressure variation, which will pull the first transmission wheel 914 and the second transmission wheel 915 to rotate through the transmission belt 905, and then pull the intermediate pipe 901 to rotate through the connecting belt 903. In the process of intermediate pipe 901 rotation, the inner wall of the water inlet pipe 105 and the water outlet pipe 106 can be cleaned by the pipe scraper 902.

[0037] It needs to be explained that the box-type substation for reactive power compensation is used, first of all, the lightweight plate structure is fixed to each other, so as to splice the overall structure of the support frame 1 on site, the plate is fixed after the connection and divides the internal space of the whole support frame 1 into the capacitor chamber 3, the communication and power collection chamber 11, the automation chamber 12, the transformer chamber 7, the low-voltage cabinet chamber 13 and the high-voltage cabinet chamber 14, the capacitor chamber 3 is installed with the reactive power compensation capacitor, the power factor is improved, the power grid loss is reduced, the communication module built-in in the communication and power collection chamber 11 can be remotely monitored and data transmission, the power collection equipment installed inside carries out power collection, can monitor the voltage, current and power and other electric energy parameters in real time, the circuit breaker and metering instrument and other facilities are installed in the low-voltage cabinet chamber 13, the low-voltage power supply is distributed, the low-voltage line is protected, the disconnecting switch and the protection relay are installed in the high-voltage cabinet chamber 14, mainly responsible for the high-voltage incoming line and outgoing line control; the box-type substation working process is adjusted by the adjusting mechanism 6 to install the humidity sensor 412, the adjusting motor 607 drives the adjusting lead screw 606 to rotate, which will drive the corner support 604 and the mounting plate 411 to move along the axis direction of the adjusting lead screw 606 through the adjusting block 605, which expands the monitoring range of the humidity sensor 412, the first air fan 403, the second air fan 408 and the third air fan 410 are operated simultaneously in the dehumidification process, the first air fan 403 and the third air fan 410 discharge the air inside the capacitor chamber 3, at the same time, the corner support 604 pulls the lifting frame 407 and the second air fan 408 to slide along the guide rail 406 through the adjusting block 605 during the movement process, adjusts the height range of the second air fan 408, adjusts the air flow direction inside the capacitor chamber 3 in the dehumidification process, and guarantees the dehumidification effect; the support table 503 moves up and down along the sliding guide rail 501 through the connecting shaft 602 to connect the clamping frame 601 to drive the support table 503 to move up and down along the sliding guide rail 501 during the sliding process of the adjusting block 605 along the axis of the adjusting lead screw 606, the second gear 507 moves up and down during the movement process of the support table 503 following the sliding block 502, rotates through the meshing rack 508, at the same time, drives the first gear 506 and the cleaning roller brush 505 to rotate in the opposite direction, and then rotates the cleaning roller brush 505 to clean the bottom air outlet 402 and the air vent 405, to prevent the air flow groove from being covered with dust;The temperature of the fluorinated liquid is monitored in real time by the temperature sensor installed in the fluorinated liquid chamber during operation of the transformer 8. When the temperature of the electronic fluorinated liquid is found to be too high, the heat pump 104 will draw the electronic fluorinated liquid inside the transformer 8 out and discharge it into the plate heat exchanger 101 through the first pipeline 102 for heat exchange, and then re-enter the fluorinated liquid chamber inside the transformer 8 from the second pipeline 103. The water inlet pipe 105 and the water outlet pipe 106 are connected to an external water pump and a water storage tank respectively to form a circulating structure of cooling water. During the process of the heat pump 104 adjusting the output power following the change in temperature, the pressure change in the first pipeline 102 will be transmitted to the pressure pipe 908, and then the piston plate 907 will be balanced by the extension and contraction of the spring 910. During the process of the piston plate 907 moving up and down following the change in pressure, the second transmission wheel 915 and the first transmission wheel 914 will be driven to rotate synchronously by the transmission belt 905, and then the connecting belt 903 will be driven to rotate by the connecting wheels on the first support shaft 912 and the second support shaft 913, and the intermediate pipe 901 will be rotated by the connecting belt 903. During the process of the rotation of the intermediate pipe 901, the inner walls of the water inlet pipe 105 and the water outlet pipe 106 can be cleaned by the pipeline scraper 902, so as to prevent the scaling of the inner walls of the water inlet pipe 105 and the water outlet pipe 106 connected to the cooling water from affecting the heat exchange efficiency.

[0038] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A box-type substation for reactive power compensation, comprising a support frame (1), characterized in that: The top of the support frame (1) is provided with a top cover plate (2), one side of the inside of the support frame (1) is respectively provided with a capacitor chamber (3), a communication and power collection chamber (11) and an automation chamber (12), one side of the communication and power collection chamber (11) is provided with a low-voltage cabinet chamber (13), one side of the low-voltage cabinet chamber (13) is provided with a high-voltage cabinet chamber (14), one side of the high-voltage cabinet chamber (14) is provided with a transformer chamber (7), the inside of the capacitor chamber (3) is provided with a dehumidification mechanism (4), the dehumidification mechanism (4) is provided with a air outlet cleaning mechanism (5), the air outlet cleaning mechanism (5) is installed on the adjusting mechanism (6), the transformer chamber (7) is fixedly provided with a transformer (8), the transformer (8) is provided with a heat exchange mechanism (10), and the heat exchange mechanism (10) is provided with an anti-fouling mechanism (9). The adjusting mechanism (6) comprises a clamping frame (601) connected to the air outlet cleaning mechanism (5), a connecting shaft (602) clamped in the clamping frame (601), and a telescopic rod (603) fixed to the connecting shaft (602). The telescopic rod (603) is slidably connected to a corner support (604), and the corner support (604) is connected to the dehumidification mechanism (4). The corner support (604) is rotatably connected to an adjusting block (605) in the middle, the adjusting block (605) is connected to an adjusting lead screw (606), and the adjusting lead screw (606) is rotatably connected to the capacitor chamber (3). The bottom end of the adjusting lead screw (606) is fixedly connected to the output end of an adjusting motor (607), the adjusting motor (607) is fixed in a protection support (608), the protection support (608) is fixed to the bottom of the support frame (1), and the corner support (604) is fixedly connected with a mounting plate (411). The mounting plate (411) is symmetrically provided with a humidity sensor (412).

2. A box-type substation for reactive power compensation according to claim 1, characterized in that: The dehumidification mechanism (4) comprises a capacitor cabinet door (401) rotatably connected to the capacitor chamber (3), a plurality of bottom air outlets (402) uniformly arranged on one side and bottom of the capacitor cabinet door (401), a plurality of first air fans (403) uniformly arranged on the inner side of the capacitor cabinet door (401) and close to the bottom air outlets (402), an outer baffle (404) arranged on the outer side of the capacitor cabinet door (401), an air vent (405) arranged on the outer baffle (404), and a plurality of top air outlet nets (409) symmetrically arranged on one side and top of the capacitor cabinet door (401). The low-voltage cabinet chamber (13) is symmetrically provided with a third air fan (410) on one side close to the top air outlet net (409).

3. A box-type substation for reactive power compensation according to claim 2, characterized in that: The dehumidification mechanism (4) further comprises guide rails (406) symmetrically mounted on the inner wall of the capacitor chamber (3), a lifting frame (407) slidably connected to the guide rails (406), and the corner support (604) rotatably connected to the lifting frame (407). The lifting frame (407) is uniformly provided with a second air fan (408).

4. A box-type substation for reactive power compensation according to claim 2, characterized in that: The tuyere cleaning mechanism (5) comprises sliding rails (501) symmetrically installed on the inner wall of the capacitor cabinet door (401), a sliding block (502) is slidably connected to the sliding rails (501), a support table (503) is arranged on the sliding block (502), the support table (503) is slidably connected to a through slot formed in the capacitor cabinet door (401), and the clamping frame (601) is fixed to the support table (503).

5. A box-type substation for reactive power compensation according to claim 4, characterized in that: The support shaft (504) is rotatably connected between the support tables (503), a cleaning roller brush (505) is fixedly sleeved on the support shaft (504), the cleaning roller brush (505) is located between the capacitor cabinet door (401) and the outer baffle (404), first gears (506) are fixedly installed at the two ends of the support shaft (504), the first gears (506) are in meshing connection with second gears (507), the second gears (507) are rotatably connected to the support tables (503), the second gears (507) are in meshing connection with a rack (508), and the rack (508) is fixed to the capacitor cabinet door (401).

6. A box-type substation for reactive power compensation according to claim 1, characterized in that: The heat exchange mechanism (10) comprises a plate heat exchanger (101) fixed in the pressure changing chamber (7), the plate heat exchanger (101) is provided with a first pipeline (102) and a second pipeline (103), the first pipeline (102) is connected with a heat exchange pump (104), the heat exchange pump (104) is in communication with a fluorination liquid chamber in the transformer (8) through a pipeline, the second pipeline (103) is in communication with the fluorination liquid chamber in the transformer (8), the plate heat exchanger (101) is respectively provided with a water inlet pipe (105) and a water outlet pipe (106), and the water inlet pipe (105) and the water outlet pipe (106) are fixedly connected with a water receiving pipe (107).

7. A box-type substation for reactive power compensation according to claim 6, characterized in that: The anti-fouling mechanism (9) comprises a middle pipe (901) rotatably installed at one end in the water inlet pipe (105) and the water outlet pipe (106), the other end of the middle pipe (901) is rotatably connected to the water receiving pipe (107), annular sealing rings are arranged at the connection positions of the middle pipe (901) and the water inlet pipe (105), the water outlet pipe (106) and the water receiving pipe (107), a pipeline scraper (902) is arranged in the middle pipe (901), and the pipeline scraper (902) is attached to the inner walls of the water inlet pipe (105), the water outlet pipe (106) and the water receiving pipe (107).

8. A box-type substation for reactive power compensation according to claim 7, characterized in that: The plate heat exchanger (101) is rotationally connected with a first supporting shaft (912) and a second supporting shaft (913), the first supporting shaft (912) and the second supporting shaft (913) are provided with connecting wheels, the connecting wheels are wound with a connecting belt (903), the connecting belt (903) is wound on a middle pipe (901), the first supporting shaft (912) and the second supporting shaft (913) are respectively provided with a first transmission wheel (914) and a second transmission wheel (915), the first transmission wheel (914) and the second transmission wheel (915) are wound with a transmission belt (905), the transmission belt (905) is sleeved on a supporting wheel (906), and the supporting wheel (906) is rotationally connected in the pressure changing chamber (7) through a support.

9. A box-type substation for reactive power compensation according to claim 8, characterized in that: The transmission belt (905) is fixed with a piston plate (907), the piston plate (907) is slidingly connected in a pressure pipe (908), the pressure pipe (908) is slidingly connected with a sealing sleeve (909), the sealing sleeve (909) is fixed on the piston plate (907), the top of the piston plate (907) is provided with a spring (910), the top end of the spring (910) is fixed on a microporous plate (911), the microporous plate (911) is uniformly provided with air passing micropores, and the microporous plate (911) is fixed on the top end of the pressure pipe (908). The bottom end of the pressure pipe (908) is communicated with the first pipeline (102).

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