Sheet net type guardrail for parallel capacitor device

Abstract

The utility model relates to a sheet net type guardrail for a parallel capacitor device, and belongs to the technical field of capacitor guardrails. Comprising an isolating switch operating mechanism, two access doors, a plurality of isolating net frames, three reinforced isolating net frames, an isolating switch frame and a discharge coil frame, the isolation switch frame and the discharge coil frame are arranged on two sides of a capacitor in a one-to-one correspondence manner and are connected with the two reinforced isolation net frames in a one-to-one correspondence manner, the isolation switch operation mechanism is mounted on the other reinforced isolation net frame, the other reinforced isolation net frame is connected with the isolation switch frame, and the discharge coil frame is connected with the discharge coil frame. And the access door, the isolation net frame and the reinforced isolation net frame are wound to form an annular guardrail, and the capacitor, the isolation switch frame and the discharge coil frame are surrounded in the annular guardrail. The utility model has the advantages of simple structure, easy manufacture, convenient disassembly, convenient installation, strong perspectivity and high strength, and is favorable for resisting the invasion of external force.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitor guardrails, in particular to a sheet net type guardrail for a shunt capacitor device. Background Technique

[0002] In the power system, the guardrail of the shunt capacitor device is an installation fence used to protect personnel and equipment, which is fixed around the capacitor device; during the operation of the capacitor bank, the guardrail can prevent personnel from entering the dangerous area by mistake and avoid touching the live capacitor bank at will, so as to ensure personal safety and protect the equipment in the capacitor bank from external interference or damage. Therefore, the guardrail needs to have sufficient strength and not shake or deform under the action of external forces (such as maximum wind force, human force) after installation, and can resist the invasion of natural disasters such as typhoons, sandstorms, and hailstones; it also needs to meet the requirements of the national power department for the design of the guardrail of the electrical capacitor in the substation.

[0003] At present, there are various types of guardrails for shunt capacitor devices. Common guardrails include fiberglass, hot-dip galvanized, welded mesh type, and mesh frame type, etc.; the disadvantages in the production, installation, and maintenance of the guardrail are: high material cost, high maintenance cost, poor weather resistance, and complex and cumbersome disassembly, which increases the installation time and workload. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is: to provide a sheet net type guardrail for a shunt capacitor device to solve the above problems.

[0005] The technical solution of the utility model to solve the above technical problems is as follows: a sheet net type guardrail for a shunt capacitor device, comprising: a disconnector operating mechanism, two access doors, a plurality of isolation frames, three reinforced isolation frames, a disconnector frame, and a discharge coil frame; the disconnector frame and the discharge coil frame are arranged corresponding to each other on both sides of the capacitor and are respectively connected to the two reinforced isolation frames, the disconnector operating mechanism is installed on the other reinforced isolation frame, the other reinforced isolation frame is connected to the disconnector frame, and the access doors, the isolation frames, and the reinforced isolation frames are wound to form an annular guardrail, and the capacitor, the disconnector frame, and the discharge coil frame are surrounded by the annular guardrail.

[0006] The beneficial effects of the present utility model are as follows: The access door, the isolation mesh frame, and the enhanced isolation mesh frame are wound to form an annular guardrail, which is not only simple in structure, easy to manufacture, convenient to disassemble and install, has strong transparency, but also has a wide range of applications. The disconnector frame and the discharge coil frame are respectively connected to two enhanced isolation mesh frames, and another enhanced isolation mesh frame is connected to the disconnector frame, which is beneficial to connect the entire guardrail with the disconnector frame and the discharge coil frame through the enhanced isolation mesh frame, thereby increasing the strength of the entire guardrail and further resisting external force invasion.

[0007] On the basis of the above technical solution, the present utility model can also be improved as follows.

[0008] Further, the enhanced isolation mesh frame includes: two column mechanisms, two crossbars, a mesh sheet, and a plurality of plastic fastener caps. In the enhanced isolation mesh frame, the two column mechanisms are vertically arranged, the two crossbars are respectively arranged at the top and bottom of the column mechanisms, the two column mechanisms and the two crossbars enclose a rectangular frame structure, and both ends of the mesh sheet are connected to the column mechanisms through the plastic fastener caps;

[0009] The isolation mesh frame includes: two column mechanisms, the mesh sheet, and a plurality of plastic fastener caps. In the isolation mesh frame, the two column mechanisms are vertically arranged, and both ends of the mesh sheet are connected to the column mechanisms through the plastic fastener caps.

[0010] The beneficial effects of adopting the above further solution are: Through the simple combination and connection of the column mechanism, the crossbar, the mesh sheet, and the plastic fastener cap, it is beneficial to form mesh frames with different strengths according to the strength requirements of different parts of the guardrail, and improve the assembly convenience of the guardrail.

[0011] Further, the disconnector operating mechanism includes: three support beams, a support plate, a plurality of I-shaped brackets, two electric knife switch support beams, an adjusting plate, and two electric knife switch connecting plates; the three support beams are arranged at intervals up and down, and both ends are respectively connected to the two column mechanisms in the enhanced isolation mesh frame, the support plate is adaptively arranged between the two support beams below, the top support beam and the disconnector frame are connected through the I-shaped brackets, the two electric knife switch support beams are arranged side by side below the support beams, and both ends are respectively connected to the two column mechanisms in the enhanced isolation mesh frame, the adjusting plate is arranged between the two electric knife switch support beams, and both ends are respectively and adjustably connected to the two electric knife switch connecting plates.

[0012] The beneficial effects of adopting the above further solution are as follows: The support beam, the support plate and the I-shaped bracket support each other and connect the strengthened isolation net frame to the disconnector frame, which is beneficial to resisting the impact force during the operation of the disconnector operating mechanism and preventing shaking.

[0013] Further, waist-shaped through holes are provided at both ends of the adjusting support plate and on the electric knife switch connecting plate. The waist-shaped through holes at both ends of the adjusting support plate overlap and are cross-matched with the waist-shaped through holes on the two electric knife switch connecting plates one by one, and are connected by bolts.

[0014] The beneficial effects of adopting the above further solution are as follows: It is beneficial to arbitrarily adjust the adjusting support plate and the support beam of the electric knife switch support plate according to the on-site situation, thereby improving the convenience of installing the electric knife switch of the disconnector.

[0015] Further, the access door includes: a door frame, two door bodies, a bolt and a door handle; the two door bodies are arranged in the door frame, and the ends away from each other are rotatably connected to the two ends of the door frame through hinge shafts one by one. The bolt is arranged at the top of the door body and is adapted to be inserted into the top of the door frame. The door handle is arranged on the door body.

[0016] The beneficial effects of adopting the above further solution are as follows: The door frame and the door body are beneficial to forming a passage for entering and exiting the guardrail. The bolt is beneficial to locking and fixing the access door, improving the strength of the guardrail, and the door handle facilitates opening the door frame from the door body.

[0017] Further, the door frame is a rectangular frame structure formed by enclosing two column mechanisms and two cross bars; the door body is composed of two column mechanisms, a plurality of cross bars, a mesh and a plurality of plastic fastener caps. In the door body, the two column mechanisms are vertically arranged, and the two cross bars are arranged at the top and bottom of the column mechanisms one by one. The two column mechanisms and the two cross bars enclose a rectangular frame structure with a height less than that of the door body. The two ends of the mesh are connected to the column mechanisms through the plastic fastener caps. The two column mechanisms in the door body are rotatably connected to the two column mechanisms in the door frame through hinge shafts one by one, and the rotation angle between the door body and the door frame is between 90 degrees and 135 degrees.

[0018] The beneficial effects of adopting the above further solution are as follows: The door body is composed of column mechanisms, cross bars, a mesh and plastic fastener caps, which is beneficial to forming a door body with a certain strength through simple assembly and cooperating with the door frame and the hinge shaft to form a door for operators to enter and exit.

[0019] Further, the access door further includes an electromagnetic lock, a travel switch, and an alarm. The electromagnetic lock is installed on the door body near the door handle. The travel switch is arranged on the column mechanism, and the alarm is arranged at the top of the column mechanism.

[0020] The beneficial effects of adopting the above further solution are as follows: The combination of the electromagnetic lock and the travel switch in the main control room of the substation is conducive to real-time monitoring of the opening and closing states of the access door, adding multiple guarantees for the safe and stable operation of the equipment. The alarm is conducive to transmitting the alarm signal to the main control room of the substation to ensure the safety of personnel.

[0021] Further, the column mechanism includes: a column body, a top cover, a bottom plate, a grounding rivet nut, a plurality of fixed rivet nuts, and a grounding terminal. The top cover and the bottom plate are respectively arranged at the top and bottom of the column body. The grounding rivet nut and the grounding terminal are both arranged on the lower side wall of the column body. A plurality of the fixed rivet nuts are evenly arranged on the side wall of the column body. The bottom plate is provided with a strip-shaped through hole, and the column mechanism is fixed to the ground by on-site welding or expansion bolts. The mesh is connected to the grounding rivet nut through a grounding wire.

[0022] The beneficial effects of adopting the above further solution are as follows: The bottom plate is conducive to firmly fixing the column mechanism to the ground by on-site welding or expansion bolts, improving the strength of the guardrail and facilitating the guardrail to resist external forces. Both the grounding rivet nut and the grounding terminal are conducive to conducting the current on the mesh to the ground.

[0023] Further, bolts are arranged in the plastic fastener caps. The bolts in a plurality of the plastic fastener caps pass through both ends of the mesh and are respectively adapted to be connected with a plurality of the fixed rivet nuts to fixedly connect the mesh with the column body.

[0024] The beneficial effects of adopting the above further solution are as follows: The combination of the plastic fastener caps and the fixed rivet nuts is conducive to fixing the mesh on the column body, thereby forming a mesh frame and improving the convenience of assembling the guardrail.

[0025] Further, the mesh is a mesh structure woven by multiple iron wires. The iron wires are in a wavy structure formed after being bent multiple times, and the bending angle of the iron wires is 90 degrees - 135 degrees.

[0026] The beneficial effects of adopting the above further solution are as follows: After bending the metal wires forming the mesh, it is conducive to forming bending ribs at the top and bottom of the metal wires, thereby improving the strength of the mesh and the mesh frame and guardrail formed by the mesh. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1Schematic diagram of the structure of the guardrail protecting the capacitor provided by the embodiment of the present utility model;

[0028] Figure 2 Schematic diagram of the connection between the disconnector operating mechanism, the enhanced isolation mesh frame and the disconnector frame provided by the embodiment of the present utility model;

[0029] Figure 3 Front view of the disconnector operating mechanism on the enhanced isolation mesh frame provided by the embodiment of the present utility model;

[0030] Figure 4 Schematic diagram of the overall structure of the guardrail provided by the embodiment of the present utility model.

[0031] In the drawings, the list of components represented by each reference numeral is as follows:

[0032] 1. Disconnector operating mechanism; 2. Entrance and exit doors; 3. Isolation mesh frame; 4. Enhanced isolation mesh frame; 5. Disconnector frame; 6. Discharge coil frame; 7. Column mechanism; 8. Cross bar; 9. Mesh sheet; 10. Plastic fastener cover; 11. Support beam; 12. Support plate; 13. I-shaped bracket; 14. Electric knife gate support beam; 15. Adjusting support plate; 16. Electric knife gate connecting plate; 21. Door frame; 22. Door body; 23. Bolt; 24. Door handle; 71. Column body; 72. Top cover; 73. Bottom plate; 74. Grounding rivet nut; 75. Fixed rivet nut; 76. Grounding terminal. Detailed implementation manners

[0033] The principles and features of the present utility model are described below. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0034] As Figures 1 to 4 shown, a mesh guardrail for a shunt capacitor device includes: a disconnector operating mechanism 1, two entrance and exit doors 2, a plurality of isolation mesh frames 3, three enhanced isolation mesh frames 4, a disconnector frame 5 and a discharge coil frame 6; the disconnector frame 5 and the discharge coil frame 6 are arranged in one-to-one correspondence on both sides of the capacitor and are respectively connected to two of the enhanced isolation mesh frames 4, the disconnector operating mechanism 1 is installed on another enhanced isolation mesh frame 4, and the other enhanced isolation mesh frame 4 is connected to the disconnector frame 5. The entrance and exit doors 2, the isolation mesh frames 3 and the enhanced isolation mesh frames 4 are wound to form an annular guardrail, and the capacitor, the disconnector frame 5 and the discharge coil frame 6 are surrounded within the annular guardrail.

[0035] Among them, it should be noted that: in the technical solution of the present utility model, the reinforcing isolation mesh frame 4 arranged on the side of the disconnector frame 5 is fastened to the disconnector frame 5 by bolts, and the two enhance each other's strength to ensure the stability of the guardrail stiffness.

[0036] The beneficial effects of the present utility model are as follows: The access door, the isolation mesh frame and the reinforcing isolation mesh frame are wound to form an annular guardrail, which is not only simple in structure, easy to manufacture, convenient to disassemble and install, has strong transparency, but also has a wide range of uses. The disconnector frame and the discharge coil frame are respectively connected to two reinforcing isolation mesh frames, and another reinforcing isolation mesh frame is connected to the disconnector frame, which is beneficial to connect the entire guardrail to the disconnector frame and the discharge coil frame through the reinforcing isolation mesh frame, thereby increasing the strength of the entire guardrail and further resisting external force invasion.

[0037] Preferably, as Figures 1 to 4 shown, the reinforcing isolation mesh frame 4 includes: two column mechanisms 7, two crossbars 8, a mesh sheet 9 and a plurality of plastic fastener caps 10. In the reinforcing isolation mesh frame 4, the two column mechanisms 7 are vertically arranged, the two crossbars 8 are respectively arranged at the top and bottom of the column mechanisms 7, the two column mechanisms 7 and the two crossbars 8 enclose a rectangular frame structure, and both ends of the mesh sheet 9 are connected to the column mechanisms 7 through the plastic fastener caps 10;

[0038] The isolation mesh frame 3 includes: two column mechanisms 7, the mesh sheet 9 and a plurality of plastic fastener caps 10. In the isolation mesh frame 3, the two column mechanisms 7 are vertically arranged, and both ends of the mesh sheet 9 are connected to the column mechanisms 7 through the plastic fastener caps 10.

[0039] The beneficial effects of adopting the above preferred solution are: Through the simple combination connection of the column mechanism, crossbar, mesh sheet and plastic fastener cap, it is beneficial to form mesh frames with different strengths according to the strength requirements of different parts of the guardrail, improving the assembly convenience of the guardrail.

[0040] Preferably, as Figure 2 and Figure 3As shown in the figure, the disconnector operating mechanism 1 includes: three support beams 11, a support plate 12, a plurality of I-shaped brackets 13, two electric knife-switch support beams 14, an adjusting plate 15, and two electric knife-switch connecting plates 16; the three support beams 11 are arranged at intervals up and down, and both ends are respectively connected to two of the column mechanisms 7 in the strengthened isolation net frame 4 in a one-to-one correspondence. The support plate 12 is adaptively arranged between the two lower support beams 11. The uppermost support beam 11 and the disconnector frame 5 are connected by the I-shaped brackets 13. The two electric knife-switch support beams 14 are arranged side by side below the support beams 11, and both ends are respectively connected to two of the column mechanisms 7 in the strengthened isolation net frame 4 in a one-to-one correspondence. The adjusting plate 15 is arranged between the two electric knife-switch support beams 14, and both ends are adjustably connected to the two electric knife-switch connecting plates 16 in a one-to-one correspondence.

[0041] Among them, it should be noted that: in the technical solution of the present utility model, the external disconnector electric knife-switch connecting rod is installed on the adjusting plate 15.

[0042] The beneficial effects of adopting the above preferred solution are: the support beams, the support plate and the I-shaped brackets support each other and connect the strengthened isolation net frame and the disconnector frame, which is beneficial to resisting the impact force during the operation of the disconnector operating mechanism and preventing shaking.

[0043] Preferably, as Figure 3 shown, waist-shaped through holes are provided at both ends of the adjusting plate 15 and on the electric knife-switch connecting plates 16. The waist-shaped through holes at both ends of the adjusting plate 15 overlap and cooperate with the waist-shaped through holes on the two electric knife-switch connecting plates 16 in a cross-shaped manner and are connected by bolts.

[0044] The beneficial effects of adopting the above preferred solution are: it is beneficial to arbitrarily adjust the adjusting plate and the electric knife-switch connecting plate according to the on-site situation, thereby improving the convenience of installing the disconnector electric knife-switch.

[0045] Preferably, as Figure 4 shown, the access door 2 includes: a door frame 21, two door bodies 22, a bolt 23, and a door handle 24; the two door bodies 22 are arranged in the door frame 21, and the ends away from each other are respectively rotatably connected to both ends of the door frame 21 through a hinge shaft. The bolt 23 is arranged at the top of the door body 22 and is adaptively inserted into the top of the door frame 21. The door handle 24 is arranged on the door body 22.

[0046] The beneficial effects of adopting the above preferred solution are: the door frame and the door body are beneficial to forming a passage for the access guardrail. The bolt is beneficial to locking and fixing the access door, improving the strength of the guardrail, and the door handle facilitates opening the door frame from the door body.

[0047] Preferably, as Figure 4 shown, the door frame 21 is a rectangular frame structure surrounded by two of the column mechanisms 7 and two of the cross bars 8; the door body 22 is composed of two of the column mechanisms 7, a plurality of the cross bars 8, the mesh 9 and a plurality of plastic fastener caps 10. In the door body 22, the two column mechanisms 7 are vertically arranged, the two cross bars 8 are correspondingly arranged at the top and bottom of the column mechanism 7 respectively, the two column mechanisms 7 and the two cross bars 8 surround and form a rectangular frame structure with a height less than that of the door body 22, both ends of the mesh 9 are connected to the column mechanism 7 through the plastic fastener caps 10, the two column mechanisms 7 in the door body 22 are rotationally connected to the two column mechanisms 7 in the door frame 21 through hinge shafts respectively, and the rotation angle between the door body 22 and the door frame 21 is between 90 degrees and 135 degrees.

[0048] The beneficial effects of adopting the above preferred solution are as follows: the door body is composed of column mechanisms, cross bars, a mesh and plastic fastener caps, which is beneficial to forming a door body with a certain strength through simple assembly, and cooperating with the door frame and the hinge shaft to form a door for operators to enter and exit.

[0049] Preferably, the access door 2 further includes an electromagnetic lock, a travel switch and an alarm. The electromagnetic lock is installed on the door body 22 near the door handle 24, the travel switch is arranged on the column mechanism 7, and the alarm is arranged at the top of the column mechanism 7.

[0050] The beneficial effects of adopting the above preferred solution are as follows: the combination of the electromagnetic lock and the travel switch with the main control room of the substation is beneficial to real-time monitoring of the opening and closing state of the access door, adding multiple guarantees for the safe and stable operation of the equipment, and the alarm is beneficial to transmitting the alarm signal to the main control room of the substation to ensure the safety of personnel.

[0051] Preferably, as Figure 2 and Figure 3 shown, the column mechanism 7 includes: a column body 71, a top cover 72, a bottom plate 73, a grounding rivet nut 74, a plurality of fixing rivet nuts 75 and a grounding terminal 76; the top cover 72 and the bottom plate 73 are correspondingly arranged at the top and bottom of the column body 71 respectively, the grounding rivet nut 74 and the grounding terminal 76 are both arranged on the lower side wall of the column body 71, a plurality of the fixing rivet nuts 75 are uniformly arranged on the side wall of the column body 71, the bottom plate 73 is provided with a strip-shaped through hole, and the column mechanism 7 is fixed on the ground by on-site welding or expansion bolts, and the mesh 9 is connected to the grounding rivet nut 74 through a grounding wire.

[0052] The beneficial effects of adopting the above preferred solution are as follows: The bottom plate is conducive to firmly fixing the column mechanism on the ground through on-site welding or expansion bolts, improving the strength of the guardrail and facilitating the guardrail to resist external forces. Both the earthing rivet nut and the earthing terminal are conducive to conducting the current on the mesh to the ground.

[0053] Preferably, bolts are provided in the plastic fastener cover 10. The bolts in multiple plastic fastener covers 10 pass through both ends of the mesh 9 and are respectively and adaptively connected to multiple fixed rivet nuts 75, fixedly connecting the mesh 9 to the column body 71.

[0054] It should be noted that: in the technical solution of the present invention, the plastic fastener cover 10 is a prior art, so its specific structure is not described.

[0055] The beneficial effects of adopting the above preferred solution are as follows: The plastic fastener cover combined with the fixed rivet nut is conducive to fixing the mesh on the column body, thereby forming a mesh frame and improving the convenience during the assembly of the guardrail.

[0056] Preferably, the mesh 9 is a mesh structure woven by multiple iron wires. The iron wires are in a wavy structure formed after being bent multiple times, and the bending angle of the iron wires is 90° - 135°.

[0057] It should be noted that: in the technical solution of the present invention, according to different strength requirements, the mesh 9 can be composed of other metal materials with different strengths.

[0058] The beneficial effects of adopting the above preferred solution are as follows: Bending the metal wires forming the mesh is conducive to forming bending ribs at the top and bottom of the metal wires, thereby improving the strength of the mesh and the mesh frame and guardrail formed by using the mesh.

[0059] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0060] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0061] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0062] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0063] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0064] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A sheet mesh type guardrail for use with a parallel capacitor device, characterized in that: include: An isolating switch operating mechanism (1), two access doors (2), a plurality of isolating mesh frames (3), three reinforced isolating mesh frames (4), an isolating switch frame (5) and a discharge coil frame (6); The isolating switch frame (5) and the discharge coil frame (6) are arranged on both sides of the capacitor in a one-to-one correspondence and are connected to the two reinforced isolation mesh frames (4) in a one-to-one correspondence. The isolating switch operating mechanism (1) is installed on another reinforced isolation mesh frame (4), and the other reinforced isolation mesh frame (4) is connected to the isolating switch frame (5). The access door (2), the isolation mesh frame (3), and the reinforced isolation mesh frame (4) are arranged to form an annular guardrail, and the capacitor, the isolating switch frame (5), and the discharge coil frame (6) are enclosed in the annular guardrail.

2. A sheet mesh type guardrail for use with a parallel capacitor device according to claim 1, characterized in that: The reinforced isolation net frame (4) comprises: two column mechanisms (7), two cross bars (8), a mesh sheet (9) and a plurality of plastic fastener covers (10). In the reinforced isolation net frame (4), the two column mechanisms (7) are vertically arranged, the two cross bars (8) are arranged one by one at the top and bottom ends of the column mechanisms (7), the two column mechanisms (7) and the two cross bars (8) are arranged to form a rectangular frame structure, and the two ends of the mesh sheet (9) are connected to the column mechanisms (7) through the plastic fastener covers (10); The isolation net frame (3) comprises: two column mechanisms (7), the net sheet (9) and a plurality of plastic fastener covers (10). In the isolation net frame (3), the two column mechanisms (7) are vertically arranged, and the two ends of the net sheet (9) are connected to the column mechanisms (7) via the plastic fastener covers (10).

3. A sheet mesh type guardrail for use with a parallel capacitor device according to claim 2, characterized in that: The isolating switch operating mechanism (1) comprises: three support beams (11), a support plate (12), a plurality of I-shaped brackets (13), two electric knife switch support plate support beams (14), an adjustment support plate (15) and two electric knife switch connection plates (16); The three support beams (11) are arranged at intervals in the upper and lower parts, and both ends are connected to the two column mechanisms (7) in the reinforced isolation net frame (4) in a one-to-one manner; the support plate (12) is adaptively arranged between the two support beams (11) at the bottom; the uppermost support beam (11) and the isolation switch frame (5) are connected via the I-shaped bracket (13); the two electric knife switch support plate support beams (14) are arranged side by side below the support beam (11), and both ends are connected to the two column mechanisms (7) in the reinforced isolation net frame (4) in a one-to-one manner; the adjustment support plate (15) is arranged between the two electric knife switch support plate support beams (14), and both ends are adjustably connected to the two electric knife switch connecting plates (16) in a one-to-one manner.

4. A sheet mesh type guardrail for use with a parallel capacitor device according to claim 3, characterized in that: Both ends of the adjustment support plate (15) and the electric knife switch connecting plate (16) are provided with waist-shaped through holes. The waist-shaped through holes at both ends of the adjustment support plate (15) correspond one-to-one with the waist-shaped through holes on the two electric knife switch connecting plates (16) to form a cross and overlap, and are connected by bolts.

5. A sheet mesh type guardrail for use with a parallel capacitor device according to claim 2, characterized in that: The entrance door (2) comprises: a door frame (21), two door bodies (22), a latch (23) and a door handle (24); The two door bodies (22) are arranged in the door frame (21), and the ends away from each other are rotatably connected to the two ends of the door frame (21) in a one-to-one correspondence via a hinge shaft. The latch (23) is arranged at the top of the door body (22) and is adapted to be plugged into the top of the door frame (21). The door handle (24) is arranged on the door body (22).

6. A sheet mesh type guardrail for use with a parallel capacitor device according to claim 5, characterized in that: The door frame (21) is a rectangular frame structure formed by the two upright column mechanisms (7) and the two cross bars (8); The door body (22) is composed of two column mechanisms (7), a plurality of cross bars (8), a mesh (9) and a plurality of plastic fastener covers (10). In the door body (22), the two column mechanisms (7) are vertically arranged, and the two cross bars (8) are arranged one by one at the top and bottom ends of the column mechanisms (7). The two column mechanisms (7) and the two cross bars (8) are arranged to form a rectangular frame structure with a height less than that of the door body (22). The two ends of the mesh (9) are connected to the column mechanisms (7) through the plastic fastener covers (10). The two column mechanisms (7) in the door body (22) are rotatably connected to the two column mechanisms (7) in the door frame (21) through hinge shafts, and the rotation angle between the door body (22) and the door frame (21) is between 90 degrees and 135 degrees.

7. A sheet mesh type guardrail for use with a parallel capacitor device according to claim 5, characterized in that: The entry and exit door (2) further comprises an electromagnetic lock, a travel switch and an alarm, wherein the electromagnetic lock is mounted on the door body (22) near the door handle (24), the travel switch is arranged on the column mechanism (7), and the alarm is arranged at the top of the column mechanism (7).

8. The sheet mesh type guardrail for use with a parallel capacitor device according to claim 2, characterized in that: The column mechanism (7) comprises: a column body (71), a top cover (72), a bottom plate (73), a grounding rivet nut (74), a plurality of fixed rivet nuts (75) and a grounding terminal (76); The top cover (72) and the bottom plate (73) are arranged one by one at the top and bottom ends of the column body (71); the grounding rivet nut (74) and the grounding terminal (76) are both arranged on the side wall of the lower end of the column body (71); a plurality of fixed rivet nuts (75) are evenly arranged on the side wall of the column body (71); a strip through hole is arranged on the bottom plate (73); and the column mechanism (7) is fixed to the ground by on-site welding or expansion bolts; and the mesh (9) is connected to the grounding rivet nut (74) via a grounding wire.

9. A sheet mesh type guardrail for use with a parallel capacitor device according to claim 8, characterized in that: Bolts are arranged in the plastic fastener cover (10), and a plurality of bolts in the plastic fastener cover (10) pass through the two ends of the mesh (9) and are matched and connected with a plurality of fixing rivet nuts (75) in a one-to-one correspondence, so as to fix the mesh (9) to the column body (71).

10. A sheet mesh type guardrail for use with a parallel capacitor device according to claim 2, characterized in that: The mesh sheet (9) is a mesh structure formed by a plurality of iron wires, the iron wires are a wavy structure formed by multiple bendings, and the bending angle of the iron wires is 90 degrees to 135 degrees.

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