CN115313214A - A high-voltage capacitor compensation cabinet with power grid harmonic detection - Google Patents

Abstract

The invention discloses a high-voltage capacitance compensation cabinet with power grid harmonic detection, and particularly relates to the technical field of power equipment. According to the invention, through the arrangement of the air pump assembly, the grounding assembly and the radiating pipe, the compensation cabinet can automatically realize the grounding effect after being installed, the condition that a large amount of static electricity is generated due to long-time use is avoided, the phenomenon that external dust and impurities enter the cabinet body due to electrostatic adsorption is reduced, and the condition that the impurities are adhered for a long time due to the circulation of air is avoided, so that the condition that electric leakage or even open fire is generated in the compensation cabinet is avoided, and the use safety and the service life of the compensation cabinet are improved.

Description

A High-Voltage Capacitor Compensation Cabinet with Power Grid Harmonic Detection

technical field

The invention relates to the technical field of power equipment, and more specifically, the invention relates to a high-voltage capacitor compensation cabinet with harmonic detection of a power grid.

Background technique

WBB series high-voltage parallel reactive power compensation device is a capacitive reactive power compensation device used in 6KV and 10KV power systems to improve power factor, adjust voltage and reduce grid loss.

Most of the load types in the power system are inductive loads, coupled with the widespread use of power electronic equipment by power companies, the power factor of the grid is low, and the low power factor reduces the utilization of equipment, increases power supply investment, and damages The voltage quality reduces the service life of the equipment and greatly increases the line loss. Therefore, by connecting the capacitor compensation cabinet in the power system, the inductive load can be balanced, the power factor can be improved, and the utilization rate of the equipment can be improved. However, the capacitor compensation cabinet currently used There are a large number of capacitors and reactors inside, resulting in a large amount of heat during the operation of the capacitor compensation cabinet. The reactor is the main heating element, which can reach above 60°C during operation.

Most of the existing high-voltage capacitor compensation cabinets often add cooling components such as fans to their interiors to ensure their stability during operation. Static electricity will cause the surface of the compensation cabinet to absorb a large amount of dust and impurities, resulting in short circuit and poor contact of the internal components of the compensation cabinet due to the influence of impurities. If it is not cleaned for a long time, the impurities on the surface will corrode its interior At the same time, it is easy to cause fire due to leakage of electricity, which will affect the service life of the compensation cabinet, and it is difficult to guarantee its actual use effect.

Contents of the invention

In order to overcome the above-mentioned defects in the prior art, the present invention provides a high-voltage capacitor compensation cabinet with grid harmonic detection. The technical problem to be solved by the present invention is: most of the existing high-voltage capacitor compensation cabinets are Stability often requires cooling components such as fans to be added inside. However, during actual operation, due to the impurities in the outside air and the static electricity generated inside the compensation cabinet during operation, the surface of the compensation cabinet will absorb a lot of dust and impurities. As a result, the internal components of the compensation cabinet are affected by impurities, resulting in short circuit and poor contact. If they are not cleaned for a long time, the impurities on the surface will corrode the metal components inside, and at the same time, it is easy to cause fire due to leakage, resulting in compensation The service life of the cabinet is affected, and it is difficult to guarantee its actual use effect.

In order to achieve the above object, the present invention provides the following technical solutions: a high-voltage capacitor compensation cabinet with grid harmonic detection, including a cabinet, the back of the cabinet is fixedly connected to the front of the filter box, and the back of the filter box passes through The connecting pipe is fixedly connected to one end of the front of the air pump assembly, the upper surface of the filter box communicates with the bottom end of the air delivery conduit, the air pump assembly communicates with the bottom end of the air delivery conduit through the filter box, and the air delivery conduit There are three first joints arranged on the outer surface of the first joint, the bottom end of the upper first joint communicates with the top end of the gas transmission conduit, and the left and right ends of the three first joints are respectively opposite to the two second joints through two air pipes The front ends of the six second joints are fixedly connected to the back of the cabinet, and the back ends of the six second joints are respectively connected to the front ends of the six first conduits. One end of the back of a conduit is fixedly connected with a first elbow, and one end of the back of the four first conduits located below is fixedly connected with a third joint, and the bottom end of the first elbow communicates with the top of the second conduit, The inner walls corresponding to the two third joints communicate with the outer surface of the same second conduit, the top of the second conduit is provided with a pressure hole, and the lower surface of the inner wall of the pressure hole is provided with a sliding hole, and the inside of the sliding hole is An extruding rod is slidably connected, the top of the extruding rod is fixedly connected to the lower surface of the piston pad, the outer surface of the piston pad overlaps the inner wall of the sliding hole, and a return spring is arranged in the sliding hole. The top end and the bottom end of the return spring are respectively fixedly connected with the upper surface of the inner wall of the slide hole and the upper surface of the piston pad, and the bottom end of the extruding rod is fixedly connected with the upper surface of the grounding assembly.

As a further solution of the present invention: the lower surface of the cabinet is fixedly connected to the upper surface of the base, one end of the front of the six second joints is respectively connected to one end of the back of the six heat dissipation pipes, and the inner walls of the six heat dissipation pipes are all Several pressure baffles are fixedly connected, and the several pressure baffles are arranged in a staggered manner.

As a further solution of the present invention: the upper surface of the base is fixedly connected with the filter box and the lower surface of the air pump assembly respectively, the air inlet on the back of the air pump assembly communicates with one end of the front of the first exhaust pipe, the first The other end of the first exhaust pipe communicates with the top end of the second exhaust pipe, and the other end of the second exhaust pipe communicates with one end on the back of the tee.

As a further solution of the present invention: the left and right ends of the tee communicate with the opposite ends of the two crosses through the trachea, and one end of the two crosses, one end on the back and an end far away from the three The other end of the middle pressure tube is fixedly connected to the outer surface of the pressure tube, and the other ends of the front and rear pressure tubes are fixedly connected with second elbows.

As a further solution of the present invention: the upper surface of the pressure cylinder is fixedly connected to the upper surface of the inner wall of the base, and the other ends of the two second elbows on one side are fixedly connected with a third exhaust pipe, corresponding to the two second elbows. The other ends of the three exhaust pipes are respectively fixedly connected with the outer surfaces of the two pressure cylinders.

As a further solution of the present invention: the lower surface of the pressure cylinder communicates with the upper surface of the piston suction cup, the outer surface of the pressure cylinder is fixedly connected with a pressure valve, and the lower surfaces of the six piston suction cups are all connected to the lower surface of the base at the same level.

As a further solution of the present invention: the front of the cabinet body is hinged with a door panel, the front of the door panel is provided with a control handle, and the outer surface of the air delivery conduit is fixedly connected with several positioning blocks. The air duct is fixedly connected to the back of the cabinet body through several positioning blocks, and several cooling holes are provided on the left and right sides of the cabinet body, and filter screens are arranged in the several cooling holes.

As a further solution of the present invention: the grounding assembly includes a metal gasket, the upper surface of the metal gasket is fixedly connected to the bottom end of the extrusion rod, and the lower surface of the metal gasket is fixed to the top end of the elastic ground wire connection, the surface of the elastic grounding wire is provided with anti-corrosion paint.

The beneficial effects of the present invention are:

1. The present invention sets the air pump assembly, the grounding assembly, the pressure baffle and the heat dissipation pipe. With the operation of the air pump assembly, the air pump assembly will inject air into the heat dissipation pipe and the second joint respectively through the air delivery conduit, the first joint and the second joint. In the second conduit, when the gas enters the second conduit, the second conduit will squeeze the piston pad as the gas enters, so that the piston pad will drive the grounding component to contact the ground while pushing the extrusion rod downward, At the same time, part of the gas will enter the cabinet through the heat dissipation pipe, speed up the air flow rate inside the cabinet, and realize the effect of rapid cooling of the electrical components inside the cabinet, so that the compensation cabinet can realize the effect of grounding itself after installation A large amount of static electricity occurs after long-term use, which reduces the dust and impurities from the outside entering the cabinet due to electrostatic adsorption, making the compensation cabinet less prone to short-circuit and poor contact of its internal components due to external impurities, and Due to the circulation of air, impurities are prevented from adhering for a long time, thereby avoiding electric leakage or even causing a fire in the compensation cabinet, and improving the safety and service life of the compensation cabinet;

2. In the present invention, by setting the piston sucker, pressure valve and pressure cylinder, when the air pump assembly is running, the air pump assembly will extract the air inside the tee and the pressure pipe through the first exhaust pipe and the second exhaust pipe, so that the pressure cylinder With the operation of the air pump assembly, the interior of the suction cup and the piston quickly enters a state of negative pressure. At this time, the pressure in the pressure cylinder and the piston suction cup gradually increases, and the pressure valve will be in the open state under the operation of the air pump assembly. And after the pressure in the pressure cylinder decreases to the specified value with the entry of outside air, the pressure valve will be closed again, so that the air pump component can play an auxiliary installation effect during the use of the compensation cabinet, which is different from the common Compared with the screw fixing method, the installation stability of the compensation cabinet is greatly improved, and the difficulty of installation of the compensation cabinet is reduced, and the electrical components inside the cabinet can be dissipated while the air pump component is running, thereby ensuring The actual use effect of the compensation cabinet;

3. By setting the return spring in the present invention, when the air pump assembly stops running, the air pressure in the sliding hole and the pressure air hole will gradually return to normal. At this time, the return spring will drive the piston pad to move upward, and after moving to the designated position , the return spring will stop driving the piston pad and the extrusion rod to move, so that the compensation cabinet can prevent the grounding component from being in a state of being in contact with the ground for a long time, and can reduce the use loss of the grounding component when it is not in use, thereby improving The actual use effect and flexibility of the compensation cabinet.

Description of drawings

Fig. 1 is the three-dimensional structural representation of the present invention;

Fig. 2 is the three-dimensional structural representation of the cabinet of the present invention;

Fig. 3 is a three-dimensional structural schematic view of the base of the present invention;

Fig. 4 is a schematic cross-sectional structure diagram of a second catheter of the present invention;

Fig. 5 is a three-dimensional structural schematic diagram of the pressure cylinder of the present invention;

Fig. 6 is the enlarged structural schematic diagram of place A of the present invention;

In the figure: 1 cabinet body, 2 air pump assembly, 3 filter box, 4 gas transmission pipe, 5 first joint, 6 second joint, 7 first pipe, 8 first elbow, 9 third joint, 10 second pipe , 11 sliding hole, 12 pressure air hole, 13 return spring, 14 piston pad, 15 extrusion rod, 16 grounding component, 161 metal gasket, 162 elastic grounding wire, 17 heat pipe, 18 pressure baffle, 19 first exhaust Pipe, 20 second exhaust pipe, 21 tee, 22 cross, 23 pressure pipe, 24 second elbow, 25 third exhaust pipe, 26 pressure cylinder, 27 piston sucker, 28 pressure valve, 29 base, 30 Door panel, 31 control handle, 32 positioning block, 33 cooling holes.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figures 1-6, the present invention provides a high-voltage capacitor compensation cabinet with grid harmonic detection, including a cabinet body 1, the back of the cabinet body 1 is fixedly connected to the front of the filter box 3, and the back of the filter box 3 passes through The connecting pipe is fixedly connected to one end of the front of the air pump assembly 2, the upper surface of the filter box 3 communicates with the bottom end of the air delivery conduit 4, the air pump assembly 2 communicates with the bottom end of the air delivery conduit 4 through the filter box 3, and the air delivery conduit The outer surface of 4 is provided with three first connectors 5, and the bottom end of the first connector 5 located above communicates with the top of the gas delivery conduit 4, and the left and right ends of the three first connectors 5 are respectively connected to the two air pipes through two air pipes. One end on the opposite side of the second joint 6 is connected, and one end on the front of the six second joints 6 is fixedly connected to the back of the cabinet body 1, and one end on the back of the six second joints 6 is connected to the front of the six first conduits 7 respectively. One end is connected, one end at the back of the two first conduits 7 above is fixedly connected with a first elbow 8, and one end at the back of the four first conduits 7 at the bottom is fixedly connected with a third joint 9, the first elbow The bottom end of 8 communicates with the top of the second conduit 10, and the inner walls of the corresponding two third joints 9 communicate with the outer surface of the same second conduit 10. The top of the second conduit 10 is provided with a pressure air hole 12, the pressure air hole 12 The lower surface of the inner wall is provided with a sliding hole 11, and an extruding rod 15 is slidably connected in the sliding hole 11. The top of the extruding rod 15 is fixedly connected with the lower surface of the piston pad 14, and the outer surface of the piston pad 14 is connected to the surface of the sliding hole 11. The inner wall is overlapped, and a return spring 13 is arranged in the sliding hole 11. The top and bottom ends of the returning spring 13 are fixedly connected with the upper surface of the inner wall of the sliding hole 11 and the upper surface of the piston pad 14 respectively, and the bottom end of the extrusion rod 15 is connected to the ground. The upper surface of the component 16 is fixedly connected. By setting the air pump component 2, the grounding component 16, the pressure baffle 18 and the heat dissipation pipe 17, the compensation cabinet can realize the grounding effect by itself after installation, and avoid a large amount of damage due to long-term use. The situation of static electricity reduces the external dust and impurities entering the cabinet body 1 due to electrostatic adsorption, making the compensation cabinet less prone to short circuit and poor contact of its internal components due to external impurities, and due to the circulation of air, In this way, the long-term adhesion of impurities is avoided, thereby avoiding electric leakage or even causing fire in the compensation cabinet, and improving the safety and service life of the compensation cabinet.

As shown in Figure 1, Figure 2, Figure 3 and Figure 5, the lower surface of the cabinet body 1 is fixedly connected to the upper surface of the base 29, and one end of the front of the six second joints 6 is connected to one end of the back of the six heat pipes 17 respectively and the inner walls of the six cooling pipes 17 are fixedly connected with several pressure baffles 18, and several pressure baffles 18 are arranged in a staggered manner, and the upper surface of the base 29 is fixedly connected with the lower surface of the filter box 3 and the air pump assembly 2 respectively The air inlet on the back of the air pump assembly 2 communicates with one end of the front of the first exhaust pipe 19, and the other end of the first exhaust pipe 19 communicates with the top of the second exhaust pipe 20, because a pressure valve 28 and a pressure valve 28 are provided. The pressure cylinder 26 enables the air pump assembly 2 to assist in the installation of the compensation cabinet during use. Compared with the common screw fixing method, it greatly improves the installation stability of the compensation cabinet and reduces the cost of the compensation cabinet. Difficulty during installation, and the electrical components inside the cabinet 1 can be radiated while the air pump assembly 2 is running, thereby ensuring the actual use effect of the compensation cabinet. The other end of the second exhaust pipe 20 is connected to the tee 21 One end of the back is connected, and the left and right ends of the tee 21 are respectively connected with the opposite ends of the two four-way 22 through the trachea, and one end of the two four-way 22 fronts, one end of the back and an end far away from the three-way are connected with the three-way respectively. Two pressure pipes 23 are connected, and the other end of the pressure pipe 23 in the middle is fixedly connected with the outer surface of the pressure cylinder 26, and the other ends of the pressure pipe 23 located in the front and the rear are fixedly connected with the second elbow 24.

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the upper surface of the pressure cylinder 26 is fixedly connected with the upper surface of the inner wall of the base 29, and the other ends of the two second elbows 24 on one side are fixedly connected with the first Three exhaust pipes 25, the other ends of the corresponding two third exhaust pipes 25 are respectively fixedly connected with the outer surfaces of the two pressure cylinders 26, the lower surface of the pressure cylinder 26 communicates with the upper surface of the piston sucker 27, and the pressure cylinder 26 The outer surface of the piston is fixedly connected with a pressure valve 28, and the lower surfaces of the six piston suction cups 27 are all at the same level as the lower surfaces of the base 29.

As shown in Fig. 1, Fig. 2, Fig. 4 and Fig. 6, the front of the cabinet body 1 is hinged with a door panel 30 through a hinge, the front of the door panel 30 is provided with a control handle 31, and the outer surface of the air duct 4 is fixedly connected with several a positioning block 32, the air conduit 4 is fixedly connected with the back side of the cabinet body 1 through several positioning blocks 32, and several cooling holes 33 are provided on the left and right sides of the cabinet body 1, because the positioning block 32 is provided with, the air pump assembly 2. During operation, the air duct 4 is not prone to large-scale vibration or shaking due to the rapid circulation of air inside it, which ensures the stability of the compensation cabinet during operation, and several cooling holes 33 are provided with filter screens, The ground assembly 16 includes a metal washer 161, the upper surface of the metal washer 161 is fixedly connected to the bottom end of the extrusion rod 15, and the lower surface of the metal washer 161 is fixedly connected to the top of the elastic grounding wire 162, because a return spring is provided. 13, so that the compensation cabinet can prevent the grounding component 16 from being in a state of being in contact with the ground for a long time, and can reduce the use loss of the grounding component 16 when not in use, thereby improving the actual use effect of the compensation cabinet and the safety during use. For flexibility, the elastic ground wire 162 is provided with an anti-corrosion paint on its surface.

The working principle of the present invention: After placing the compensation cabinet, the air pump assembly 2 needs to be started. When the air pump assembly 2 is running, the air pump assembly 2 will extract the tee 21 and the The air inside the pressure pipe 23 makes the inside of the pressure cylinder 26 and the piston suction cup 27 quickly enter the state of negative pressure along with the operation of the air pump assembly 2. At this time, due to the negative pressure formed between the piston suction cup 27 and the ground, the piston suction cup 27 The placement of the compensation cabinet can have a fixed effect, and the pressure in the pressure cylinder 26 and the piston suction cup 27 will gradually increase, and the pressure valve 28 will be in the open state under the operation of the air pump assembly 2, and the pressure cylinder will After the pressure in 26 is reduced to a specified value with the entry of outside air, the pressure valve 28 will be closed again. With the operation of the air pump assembly 2, the air pump assembly 2 will pass air through the air delivery conduit 4, the first joint 5 and the second joint 6 are respectively injected into the heat dissipation pipe 17 and the second conduit 10. When the gas enters the second conduit 10, the second conduit 10 will squeeze the piston pad 14 as the gas enters, so that the piston pad 14 When pushing the extrusion rod 15 to move downward, the grounding assembly 16 is brought into contact with the ground. At the same time, part of the gas will enter the cabinet 1 through the heat dissipation pipe 17, so as to speed up the air flow rate inside the cabinet 1 and realize the air flow inside the cabinet 1. The cooling effect of electrical components.

The last few points should be explained: First, in the description of this application, it should be explained that, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, which can be mechanical connection Or electrical connection, it can also be the internal communication of two components, it can be directly connected, "up", "down", "left", "right", etc. are only used to indicate the relative positional relationship, when the absolute position of the object being described Change, the relative positional relationship may change;

Secondly: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved, other structures can refer to the usual design, and the same embodiment and different embodiments of the present invention can be combined with each other if there is no conflict;

Finally: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention within the scope of protection.

Claims (8)

1. The utility model provides a high-voltage capacitance compensation cabinet with electric wire netting harmonic detects, includes the cabinet body (1), its characterized in that: the back of the cabinet body (1) is fixedly connected with the front of the filter box (3), the back of the filter box (3) is fixedly connected with the front end of the air pump component (2) through a connecting pipe, the upper surface of the filter box (3) is communicated with the bottom of the air delivery conduit (4), the air pump component (2) is communicated with the bottom of the air delivery conduit (4) through the filter box (3), three first joints (5) are arranged on the outer surface of the air delivery conduit (4), the bottom of the first joint (5) positioned above is communicated with the top of the air delivery conduit (4), the left end and the right end of each first joint (5) are respectively communicated with one ends of opposite surfaces of the two second joints (6) through two air pipes, the front ends of the six second joints (6) are fixedly connected with the back of the cabinet body (1), one ends of the back of the six second joints (6) are respectively communicated with the front ends of the six first conduits (7), the one ends of the back of the two first conduits (7) positioned above are fixedly connected with the first elbows (8) positioned at the back of the two first conduits (7), the four first elbows (7) are respectively communicated with the top ends of the same first elbows (9), the second elbows (9) are connected with the top of the first elbows (10) corresponding to the second elbows), pressure gas pocket (12) have been seted up on the top of second pipe (10), slide opening (11) have been seted up to the lower surface of pressure gas pocket (12) inner wall, sliding connection has squeeze stem (15) in slide opening (11), the top of squeeze stem (15) is connected with the lower fixed surface of piston pad (14), the surface of piston pad (14) and the inner wall overlap joint of slide opening (11), be provided with reset spring (13) in slide opening (11), reset spring's (13) top and bottom respectively with the upper surface of slide opening (11) inner wall and the upper surface fixed connection of piston pad (14), the bottom of squeeze stem (15) and the upper surface fixed connection of ground connection subassembly (16).

2. The high voltage capacitance compensation cabinet with power grid harmonic detection according to claim 1, characterized in that: the lower surface of the cabinet body (1) is fixedly connected with the upper surface of the base (29), the front one ends of the six second connectors (6) are respectively communicated with the back one ends of the six radiating pipes (17), the inner walls of the six radiating pipes (17) are fixedly connected with a plurality of pressure baffles (18), and the pressure baffles (18) are arranged in a staggered mode.

3. The high voltage capacitance compensation cabinet with power grid harmonic detection according to claim 2, characterized in that: the upper surface of base (29) is connected with the lower fixed surface at rose box (3) and air pump subassembly (2) respectively, the air inlet at the air pump subassembly (2) back is linked together with the positive one end of first blast pipe (19), the other end of first blast pipe (19) is linked together with the top of second blast pipe (20), the other end and the one end at the tee bend (21) back of second blast pipe (20) are linked together.

4. The high voltage capacitance compensation cabinet with power grid harmonic detection function as claimed in claim 3, wherein: tee bend (21) about both ends pass through the trachea and are linked together with the one end of two cross (22) opposite faces respectively, and the positive one end of two cross (22), the one end at the back and the one end of keeping away from mutually are linked together with three manometer pipe (23) respectively, and the other end that lies in manometer pipe (23) in the middle is connected with the fixed surface of pressure tube (26), the equal fixedly connected with second elbow (24) of the other end that lies in the manometer pipe (23) in the place ahead and lie in the rear.

5. The high voltage capacitance compensation cabinet with power grid harmonic detection according to claim 4, characterized in that: the upper surface of the pressure cylinder (26) is fixedly connected with the upper surface of the inner wall of the base (29), the other ends of the two second elbows (24) positioned on one side are fixedly connected with third exhaust pipes (25), and the other ends corresponding to the two third exhaust pipes (25) are fixedly connected with the outer surfaces of the two pressure cylinders (26) respectively.

6. The high voltage capacitance compensation cabinet with power grid harmonic detection according to claim 5, characterized in that: the lower surface of pressure cylinder (26) is linked together with the upper surface of piston sucking disc (27), the surface fixed connection of pressure cylinder (26) has pressure valve (28), and the lower surface of six piston sucking discs (27) all is in same level with the lower surface of base (29).

7. The high voltage capacitance compensation cabinet with power grid harmonic detection according to claim 1, characterized in that: the front of the cabinet body (1) is hinged with a door plate (30) through a hinge, the front of the door plate (30) is provided with a control handle (31), the outer surface of the gas transmission conduit (4) is fixedly connected with a plurality of positioning blocks (32), the gas transmission conduit (4) is fixedly connected with the back of the cabinet body (1) through the plurality of positioning blocks (32), a plurality of radiating holes (33) are formed in the left side surface and the right side surface of the cabinet body (1), and a filter screen is arranged in each radiating hole (33).

8. The high voltage capacitance compensation cabinet with power grid harmonic detection according to claim 1, characterized in that: the grounding assembly (16) comprises a metal gasket (161), the upper surface of the metal gasket (161) is fixedly connected with the bottom end of the extrusion rod (15), the lower surface of the metal gasket (161) is fixedly connected with the top end of the elastic grounding wire (162), and the surface of the elastic grounding wire (162) is provided with anti-corrosion paint.

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