CN210075095U - Insulating mounting structure for power supply rectifier of subway traction substation - Google Patents
Insulating mounting structure for power supply rectifier of subway traction substation Download PDFInfo
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- CN210075095U CN210075095U CN201920987035.7U CN201920987035U CN210075095U CN 210075095 U CN210075095 U CN 210075095U CN 201920987035 U CN201920987035 U CN 201920987035U CN 210075095 U CN210075095 U CN 210075095U
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- rectifier
- cabinet body
- cushion block
- insulating
- power supply
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Abstract
The utility model belongs to the technical field of urban rail transit, a an insulating mounting structure that is used for subway to pull power rectifier of transformer substation is related to, include: the insulating cushion block is positioned between the rectifier cabinet body and the foundation embedded channel steel and is respectively and fixedly connected with the bottom plate of the rectifier cabinet body and the foundation embedded channel steel through bolts; sealing plates are arranged between the insulating cushion block and the bottom plate of the rectifier cabinet body, between the insulating cushion block and the negative electrode cabinet, and at the left side and the right side of the rectifier cabinet body. According to the insulating mounting structure, by increasing the design of the insulating cushion block, the insulating cushion block is fixedly connected with the rectifier cabinet body, the negative electrode cabinet and the foundation embedded channel steel through bolts, and an SMC high-performance insulating material is reasonably selected on the premise of ensuring the safety of subway power supply; the problem that the insulation distance between the shell of the cabinet body and the ground is small is solved by combining the special requirements of the subway to rectifier cabinet body structure and considering the requirement of cabinet body strength; the hidden danger of the frame grounding device is eliminated, and the safe operation of the subway is guaranteed.
Description
Technical Field
The utility model belongs to the technical field of urban rail transit, a subway pulls power supply rectifier of electric substation is related to, concretely relates to an insulating mounting structure that is used for subway to pull power supply rectifier of electric substation.
Background
The subway is taken as an important urban rail vehicle, and the system power supply technology and the related traction power supply equipment technology thereof are mature day by day. At present, a cathode in a subway direct-current traction power supply system is a traveling cabinet, a backflow in direct-current power supply flows to the cathode cabinet through a backflow cable connected with a steel rail, part of current returns to the cathode cabinet from a drainage network below a track, and part of stray current returns from the ground, and the current corrodes metal materials such as underground metal pipelines and underground structural steel bars, so that the service life of the subway direct-current power supply system is shortened. If the direct current power supply equipment shell of the traction substation is grounded, when the anode is in ground fault, the short-circuit current generated between the anode and the cathode through the equipment shell is suddenly increased, and the personal safety hazard is great when passengers get on or off the train because the subway body shell and the rail are connected with the cathode; meanwhile, direct current equipment may be burned out or the equipment cannot work normally, so that the reliability of the insulation installation of the direct current equipment in the subway traction substation is very critical.
The scheme is that the existing subway traction substation power supply rectifier insulation installation is generally adopted, referring to attached figures 1-2, a rectifier cabinet body is installed at four points, holes are formed in the installation position of the rectifier cabinet body and filled with insulation plates, and the purpose is to install fixing bolts to insulate the rectifier cabinet body; 2.5mm polycarbonate plates are riveted at the lower part of the cabinet body and are used as primary in-out cables of the rectifier and are convenient to block and prevent rats and other damages, and sealing materials are arranged at the periphery between the sealing plates and the cabinet body to prevent damp gas from entering the interlayer so as to reduce the insulation value to the ground; the cabinet body and the basic channel steel are spaced by 2.5mm polycarbonate plate base plates, the base plates extend out of the edge of the cabinet body by 50mm, and the insulation distance between the cabinet body and the ground is increased.
In the above prior art, there are the following problems: 1. the thickness of a polycarbonate insulating base plate at the lower part of a cabinet body of the existing rectifier cabinet is limited (5mm), and if the flatness of a foundation of a substation is not enough or the ground is wet, the ground insulation value of the rectifier cabinet is easy to be lower; 2. the integral installation strength of the rectifier cabinet body and the embedded channel steel of the substation foundation is not enough; 3. the working reliability of the frame grounding protection device for detecting the grounding of the rectifier cabinet body is hidden.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide an insulation mounting structure for a power supply rectifier of a subway traction substation, which meets the design requirement of subway mounting by increasing the design of an insulation cushion block and reasonably designing the connection and fixation of the insulation cushion block, a cabinet body and a foundation channel steel; the hidden danger of the frame grounding device is eliminated, and the safe operation of the subway is guaranteed.
In order to achieve the above purpose, the utility model provides a following technical scheme:
an insulated mounting structure for a power rectifier of a subway traction substation, comprising: the insulating cushion block is positioned between the rectifier cabinet body and the foundation embedded channel steel and is respectively and fixedly connected with the bottom plate of the rectifier cabinet body and the foundation embedded channel steel through bolts; sealing plates are arranged between the insulating cushion block and the bottom plate of the rectifier cabinet body, between the insulating cushion block and the negative electrode cabinet and at the left side and right side neutral positions of the rectifier cabinet body.
Furthermore, the sealing plate comprises a first polycarbonate plate riveted at the lower part of the bottom plate of the rectifier cabinet body, the thickness of the first polycarbonate plate is 5mm, and the sealing plate is used as a primary incoming and outgoing cable of the rectifier and is convenient for blocking, preventing mouse damage and the like; the first polycarbonate plate is sealed with the periphery of the rectifier cabinet bottom plate to prevent moisture gas from entering the interlayer to reduce the insulation value to the ground.
Further, the shrouding still includes the second polycarbonate board that is located between insulating cushion and the negative pole cabinet, and the second polycarbonate board passes through the bolt to be connected with insulating cushion, with the clearance shutoff between insulating cushion and the negative pole cabinet.
Furthermore, the sealing plate also comprises a third polycarbonate plate positioned at the left and right side neutral positions of the rectifier cabinet body, and the third polycarbonate plate is fixedly connected with the left and right sides of the rectifier cabinet body through bolts; the height of the third polycarbonate plate is 58mm, the thickness is 3mm to prevent foreign matters from entering the lower wire inlet and outlet area of the rectifier cabinet body 2 to cause faults.
Furthermore, four sides of the insulating cushion block are provided with mounting holes.
Further, the mounting holes comprise first mounting holes used for being connected with a bottom plate of the rectifier cabinet body, and the bottom plate of the rectifier cabinet body is connected with the upper side of the insulating cushion block through the first mounting holes through bolts; the mounting hole also comprises a second mounting hole used for being connected with the foundation embedded channel steel, and the lower side of the insulating block is connected with the foundation embedded channel steel through the second mounting hole through a bolt; the mounting holes also comprise third mounting holes used for being connected with a left sealing plate or a right sealing plate of the rectifier cabinet body; the specification of the bolt is M12 × 35, the number of the first mounting holes is three, the number of the second mounting holes is four, and the number of the third mounting holes is at least one, and the third mounting holes are respectively connected with the left side sealing plate or the right side sealing plate of the rectifier cabinet body.
Furthermore, a spring washer and a flat washer are arranged between the bolt and the first mounting hole from top to bottom; a spring washer and a square inclined washer are arranged between the bolt and the second mounting hole from bottom to top.
Furthermore, the insulating cushion block is made of SMC insulating materials, and has the advantages of light weight, high strength, good fireproof and flame-retardant performances, environmental friendliness, green performance, long service life and the like.
Compared with the prior art, the utility model provides a technical scheme includes following beneficial effect: by increasing the design of the insulating cushion block, the insulating cushion block is fixedly connected with the rectifier cabinet body, the negative electrode cabinet and the foundation embedded channel steel through bolts, and an SMC high-performance insulating material is reasonably selected on the premise of ensuring the safety of subway power supply; the problem that the insulation distance between the shell of the cabinet body and the ground is smaller is solved by combining the special requirements of the subway to the rectifier cabinet body structure (no welding between frames) and considering the requirement of the cabinet body strength; the hidden danger of the frame grounding device is eliminated, and the safe operation of the subway is guaranteed.
In addition, through the design to insulating cushion mounting hole structure, the SMC moulded piece is rationally designed to be connected fixedly with the cabinet body, basic channel-section steel, has satisfied the installation design requirement of subway.
Drawings
FIG. 1 is a field assembly view of a prior art insulating mounting structure for a power rectifier of a subway traction substation;
FIG. 2 is an exploded view of FIG. 1;
fig. 3 is a field layout diagram of the power supply rectifier of the subway traction substation provided by the present invention;
fig. 4 is a schematic structural view of an insulating cushion block in an insulating mounting structure for a power supply rectifier of a subway traction substation, which is provided by the utility model;
fig. 5 is a sectional view a-a of fig. 4.
Fig. 6 is a field assembly view of the insulation mounting structure for the power rectifier of the metro traction substation provided by the present invention;
FIG. 7 is an exploded view of FIG. 6;
fig. 8 is the utility model provides a side view of subway traction substation power supply rectifier cabinet body.
Wherein: 1. insulating cushion blocks; 2. a rectifier cabinet body; 3. embedding channel steel in a foundation; 4. a negative electrode cabinet; 5. a third polycarbonate sheet; 6. a first polycarbonate sheet; 7. a first mounting hole; 8. a second mounting hole; 9. a third mounting hole; 10. a bolt; 11. a spring washer; 12. a flat washer; 13. a square bevel washer; 14. a nut; 15. epoxy glass cloth board; 16. welding a stud; 17. a rectifier cabinet body bottom plate; 18. 2.5mm polycarbonate plate; 19. a second polycarbonate sheet.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and embodiments:
example 1:
referring to fig. 6-7, the utility model provides an insulating mounting structure for subway traction substation power supply rectifier, include: the insulation cushion block 1 is positioned between the rectifier cabinet body 2 and the foundation embedded channel steel 3, and is fixedly connected with a rectifier cabinet body bottom plate 17 and the foundation embedded channel steel 3 through bolts 10 respectively; sealing plates are arranged between the insulating cushion block 1 and the bottom plate 17 of the rectifier cabinet body, between the insulating cushion block 1 and the negative electrode cabinet 4 and at the left and right neutral positions of the rectifier cabinet body 2.
Furthermore, the sealing plate comprises a first polycarbonate plate 6 riveted at the lower part of the bottom plate 17 of the rectifier cabinet body, the thickness of the first polycarbonate plate 6 is 5mm, and the sealing plate is used as a primary incoming and outgoing line cable of the rectifier and is convenient for blocking, preventing mouse damage and the like; the first polycarbonate plate 6 is sealed to the bottom plate periphery of the rectifier cabinet 2 to prevent moisture gas from entering the interlayer to reduce the insulation value to the ground.
Further, the sealing plate further comprises a second polycarbonate plate 19 located between the insulating cushion block 1 and the negative electrode cabinet 4, and the second polycarbonate plate 19 is connected with the insulating cushion block 1 through bolts 10 to seal a gap between the insulating cushion block 1 and the negative electrode cabinet 4.
Further, the sealing plate further comprises a third polycarbonate plate 5 positioned at a left side neutral position and a right side neutral position of the rectifier cabinet body 2, and the third polycarbonate plate 5 is fixedly connected with the left side and the right side of the rectifier cabinet body 2 through bolts 10; the third polycarbonate plate 5 has a height of 58mm and a thickness of 3mm, so as to prevent foreign matters from entering the lower wire inlet and outlet area of the rectifier cabinet 2 to cause failure.
Further, as shown in fig. 4-5, the four sides of the insulating spacer 1 are provided with mounting holes.
Further, the mounting holes comprise first mounting holes 7 used for being connected with a rectifier cabinet body bottom plate 17, and the rectifier cabinet body bottom plate 17 is connected with the upper side of the insulating cushion block 1 through the first mounting holes 7 through bolts 10; the mounting holes further comprise second mounting holes 8 used for being connected with the foundation embedded channel steel 3, and the lower sides of the insulation blocks are connected with the foundation embedded channel steel 3 through the second mounting holes 8 through bolts 10; the mounting holes also comprise third mounting holes 9 used for being connected with a left sealing plate or a right sealing plate of the rectifier cabinet body 2; the specification of the bolt 10 is M12 × 35, the number of the first mounting holes 7 is three, the number of the second mounting holes 8 is four, and the number of the third mounting holes 9 is at least one, and the first mounting holes and the third mounting holes are respectively connected with the left side sealing plate or the right side sealing plate 5 of the rectifier cabinet body 2.
Further, a spring washer 11 and a flat washer 12 are arranged between the bolt 10 and the first mounting hole 7 from top to bottom; a spring washer 11 and a square washer 13 are arranged between the bolt 10 and the second mounting hole 8 from bottom to top.
Furthermore, the insulating cushion block 1 is made of SMC insulating material, and has the advantages of light weight, high strength, good fireproof and flame-retardant performances, environmental protection, greenness, long service life and the like.
Therefore, according to the insulating mounting structure for the power supply rectifier of the subway traction substation, by adding the design of the insulating cushion block 1, the rectifier cabinet body 2, the negative electrode cabinet 4 and the foundation embedded channel steel 3 are fixedly connected through the bolts 10, and on the premise of ensuring the safety of subway power supply, SMC high-performance insulating materials are reasonably selected; by combining the special requirements of the subway on the structure of the rectifier cabinet body 2 (no welding between frames), the problem that the insulation distance between the cabinet body shell and the ground is smaller is solved under the condition of considering the requirement of the cabinet body strength; the hidden danger of the frame grounding device is eliminated, and the safe operation of the subway is guaranteed.
In addition, still through the design to 1 mounting hole structure of insulating pad, it is fixed with being connected of the cabinet body, the pre-buried channel-section steel 3 of basis to have rationally designed SMC moulded piece, has satisfied the installation design requirement of subway.
Example 2:
referring to fig. 3, the utility model also provides a subway pulls the field layout of transformer substation power supply rectifier, and every pulls two rectifiers of placing of transformer substation, is rectifier cabinet RT1, RT2 respectively, is negative pole cabinet 4 in the middle of two rectifiers, and it is the same to control two rectifier insulation design schemes. Referring to fig. 8, two SMC insulating cushion blocks are respectively arranged in front of and behind the lower portion of each rectifier cabinet body 2, SMC insulating cushion blocks are respectively arranged in front of and behind the lower portion of a negative electrode cabinet 4, sealing plates are respectively arranged between the insulating cushion blocks 1 and a rectifier cabinet body bottom plate 17, between the insulating cushion blocks 1 and the negative electrode cabinet 4, at left and right side neutral positions of the rectifier cabinet body 2 and between adjacent insulating cushion blocks 1, the insulating cushion blocks 1 are structurally illustrated in fig. 4-5, the insulating cushion blocks 1 are 595mm in length, 60mm in height and 3mm in thickness, mounting holes are respectively arranged on four side edges of each insulating cushion block 1, each mounting hole comprises a first mounting hole 7 for connecting with the rectifier cabinet body bottom plate 17, and the rectifier cabinet body bottom plate 17 is connected with the upper side of each insulating cushion block 1 through the first; the mounting holes further comprise second mounting holes 8 used for being connected with the foundation embedded channel steel 3, and the lower sides of the insulating cushion blocks 1 are connected with the foundation embedded channel steel 3 through the second mounting holes 8 through bolts 10; the mounting holes also comprise third mounting holes 9 used for being connected with a left or right sealing plate of the rectifier cabinet body 2 or an adjacent insulating cushion block 1; the pre-opened holes of the foundation embedded channel steel 3 are connected with the second mounting holes 8 of each insulating cushion block 1 through four M12 x 35 bolts 10, the bottom plate 17 of the rectifier cabinet body is connected with each insulating cushion block 1 through 3M 12 x 35 bolts 10, and the vertical distance between the cabinet body and the ground is 65mm after the installation is completed. Two insulating cushion blocks 1 are respectively cushioned in the front and the rear of each rectifier body, the installation company can conveniently install the holes on the site and the basic embedded channel steel 3, the interfaces of the insulating cushion blocks 1 (including the space between the rectifier and the negative electrode cabinet 4) are plugged by sealing plates, and the left and right side neutral positions of the rectifier body 2 are plugged by polycarbonate sealing plates with the height of 58mm and the thickness of 3mm, so as to prevent foreign matters from entering the wire inlet and outlet area at the lower part of the rectifier body 2 to cause faults.
Further, the number of the third mounting holes 9 may be two, one of the third mounting holes is used for fixedly mounting a sealing plate between adjacent insulating spacers 1, and the other is used for connecting the left or right sealing plate of the rectifier cabinet body 2 with the insulating spacers 1.
The design of the insulating cushion block 1 considers the weight (1300 kg of a single cabinet) of a rectifier and the special requirements of the subway application environment, the material is SMC material molded parts, and the advantages of light weight, high strength, good fireproof and flame-retardant properties, environmental protection, greenness, long service life and the like are fully utilized; meanwhile, the design size (the width of the channel steel is 48mm) of the embedded channel steel 3 of the subway site foundation, the width size (the width of the rectifier cabinet body 2 is 1200mm), the convenience in installation of the subway construction site and the cost of an SMC (sheet molding compound) molded part die are combined.
Due to the fact that convenience of equipment replacement after the operation life of subway equipment is expired is considered, the rectifier cabinet body 2 is designed to be of a structure that bolts 10 are connected between surfaces, and therefore the whole cabinet is convenient to disassemble; meanwhile, the overall size of the rectifier cabinet body 2 is large (the length is 1200mm, the width is 1200mm, and the height is 2300mm), and the phenomena of up-and-down dislocation and clamping stagnation between the front door and the rear door of the cabinet body are easily caused after the rectifier cabinet is integrally lifted; the rectifier has the advantages that the weight and the overall dimension of the rectifier are large, the reliability of the whole rectifier after installation is achieved, the overall strength of the cabinet body is analyzed, the strength of the installation part at the lower part of the cabinet body is redesigned, and the use requirement is completely met after the rectifier is installed on site.
The insulating mounting structure for the power supply rectifier of the metro traction substation is designed according to project requirements of No. 6 and No. 10 lines of a Chengdu metro, and the design scheme is applied and implemented in the projects; meanwhile, the method is agreed and approved by related subway construction companies, subway design houses, subway operation companies and installation and debugging units, and can be rapidly popularized and applied in subsequent subway line engineering in China.
The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
Claims (10)
1. An insulation mounting structure for a power supply rectifier of a subway traction substation, comprising: the insulation cushion block (1) is positioned between the rectifier cabinet body (2) and the foundation embedded channel steel (3), and is fixedly connected with the rectifier cabinet body bottom plate (17) and the foundation embedded channel steel (3) through bolts (10); sealing plates are arranged between the insulating cushion block (1) and the bottom plate (17) of the rectifier cabinet body, between the insulating cushion block (1) and the negative electrode cabinet (4) and at the left and right side neutral positions of the rectifier cabinet body (2).
2. An insulated mounting structure for a power rectifier of a metro traction substation according to claim 1, wherein said closing plate comprises a first polycarbonate plate (6) riveted to a lower portion of a bottom plate (17) of the rectifier cabinet.
3. The insulation mounting structure for the power supply rectifier of the metro traction substation according to claim 1, wherein the sealing plate further comprises a second polycarbonate plate (19) positioned between the insulation cushion block (1) and the negative electrode cabinet (4), and the second polycarbonate plate (19) is connected with the insulation cushion block (1) through a bolt (10) to seal a gap between the insulation cushion block (1) and the negative electrode cabinet (4).
4. The insulation mounting structure for the power supply rectifier of the metro traction substation according to claim 1, wherein the sealing plate further comprises a third polycarbonate plate (5) positioned at the left and right side neutral positions of the rectifier cabinet body (2), and the third polycarbonate plate (5) is fixedly connected with the left and right sides of the rectifier cabinet body (2) through bolts (10).
5. The insulating mounting structure for a power supply rectifier of a subway traction substation according to claim 4, characterized in that said third polycarbonate plate (5) has a height of 58mm and a thickness of 3 mm.
6. The insulation mounting structure for the power supply rectifier of the metro traction substation according to claim 1, wherein mounting holes are formed in four side edges of the insulation cushion block (1).
7. The insulation mounting structure for the power supply rectifier of the metro traction substation according to claim 6, wherein the mounting hole comprises a first mounting hole (7) for connecting with a rectifier cabinet bottom plate (17), and the rectifier cabinet bottom plate (17) is connected with the upper side of the insulation cushion block (1) through the first mounting hole (7) by a bolt (10); the mounting holes further comprise second mounting holes (8) used for being connected with the foundation embedded channel steel (3), and the lower sides of the insulating cushion blocks (1) are connected with the foundation embedded channel steel (3) through bolts (10) through the second mounting holes (8); the mounting hole also comprises a third mounting hole (9) used for being connected with a left side or a right side sealing plate of the rectifier cabinet body (2).
8. The insulating mounting structure for a power supply rectifier of a subway traction substation according to claim 7, characterized in that said bolt (10) is M12 x 35 in specification.
9. The insulation mounting structure for the power supply rectifier of the metro traction substation according to claim 7, wherein a spring washer (11) and a flat washer (12) are arranged between the bolt (10) and the first mounting hole (7) from top to bottom; a spring washer (11) and a square inclined washer (13) are arranged between the bolt (10) and the second mounting hole (8) from bottom to top.
10. Insulated mounting structure for power rectifiers in subway traction substations according to one of the claims 1 to 9, characterized in that the insulating spacer block (1) is made of SMC insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920987035.7U CN210075095U (en) | 2019-06-28 | 2019-06-28 | Insulating mounting structure for power supply rectifier of subway traction substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920987035.7U CN210075095U (en) | 2019-06-28 | 2019-06-28 | Insulating mounting structure for power supply rectifier of subway traction substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210075095U true CN210075095U (en) | 2020-02-14 |
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ID=69428891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920987035.7U Active CN210075095U (en) | 2019-06-28 | 2019-06-28 | Insulating mounting structure for power supply rectifier of subway traction substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210075095U (en) |
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2019
- 2019-06-28 CN CN201920987035.7U patent/CN210075095U/en active Active
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