Outdoor high-voltage power distribution cabinet
By designing staggered opening and closing heat dissipation grille components and magnetic cover components on outdoor high-voltage power distribution cabinets, combined with aluminum heat dissipation fins and centrifugal exhaust fans, the electrical performance damage and poor heat dissipation of power distribution cabinets in sandstorm environments are solved. problem, achieving effective protection and active heat dissipation.
Patent Information
- Application Number
- CN202411538665.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-01-21
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Outdoor high-voltage distribution cabinets face serious problems such as damage to electrical performance, poor heat dissipation and entry of sand and dust particles in sand and dust particles.
An outdoor high-voltage power distribution cabinet is designed, which uses staggered opening and closing heat dissipation grille components and magnetic cover components, combined with aluminum heat dissipation fins and centrifugal exhaust fans, to achieve effective protection and active heat dissipation under extreme conditions, and through the filter element Filter out sand and dust particles.
It effectively blocks sand and dust particles from entering the power distribution cabinet, ensuring the insulation performance and normal operation of electrical equipment, while achieving effective heat dissipation to avoid fires and equipment failures.
Smart Images
Figure CN119340806A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of outdoor power distribution cabinets, and in particular to an outdoor high-voltage power distribution cabinet. Background Art
[0002] In the Gobi Desert, sandstorms have a serious impact on outdoor distribution cabinets, especially on electrical performance. Sand and dust will deposit on the surface of electrical equipment, including insulators and conductive parts. These sand and dust may absorb moisture in the air and form a conductive path, thereby reducing the insulation performance of the equipment. The reduction in insulation performance may cause electrical faults such as leakage and short circuit, which seriously threatens the safe operation of the equipment and the life safety of operators. Sand and dust particles in sandstorms may enter the connection parts of electrical equipment, such as plugs, sockets, switches, etc., resulting in poor contact. Poor contact will cause increased resistance, heat, and even cause fire. In addition, poor contact will affect the normal operation of the equipment, leading to problems such as unstable signal transmission and equipment failure.
[0003] The heat inside the high-voltage distribution cabinet must be released, otherwise it will affect the normal operation of the components in the cabinet. The standard grille heat dissipation holes on the cabinet are not enough when dealing with extreme weather, and it is easy for sand and dust particles to enter, which in turn affects the normal operation of the distribution cabinet. Summary of the invention
[0004] Based on this, it is necessary to provide an outdoor high-voltage distribution cabinet to address the existing technical problems, which can effectively protect the components inside the cabinet in a dusty environment while ensuring the heat dissipation effect.
[0005] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:
[0006] Disclosed is an outdoor high-voltage power distribution cabinet, wherein first heat dissipation grille holes are provided on three side beams on the non-front side of the top eave of the power distribution cabinet, second heat dissipation grille holes are provided on the lower halves of the cabinet walls on both sides of the power distribution cabinet, an aluminum heat dissipation fin is provided on the inner side of the power distribution cabinet close to the back plate, a plurality of centrifugal exhaust fans distributed laterally side by side are provided above the aluminum heat dissipation fin, the fin guides of the aluminum heat dissipation fin are longitudinally arranged, a filter element installation platform is provided below the aluminum heat dissipation fin, exhaust grille holes are provided on the back plate of the power distribution cabinet at positions directly opposite to the centrifugal exhaust fans, an air intake grille hole lower than the filter element installation platform is also provided on the back plate of the power distribution cabinet, a staggered opening and closing assembly for opening and closing the first heat dissipation grille holes on the three side beams is provided on the inner top of the power distribution cabinet, and a cover assembly for opening and closing the second heat dissipation grille holes is provided on the inner sides of the cabinet walls on both sides of the power distribution cabinet.
[0007] Furthermore, the staggered opening and closing component includes two first strip grating plates respectively fitted on the inner walls of the two short side beams on the top of the distribution cabinet, two second strip grating plates symmetrically and fitted on the inner walls of the long side beams on the top of the distribution cabinet, and a group of staggered mechanisms for driving the two second strip grating plates to move toward each other, and a pulling mechanism for maintaining synchronous movement of each first strip grating plate and the corresponding second strip grating plate is arranged between the ends close to each other, and a first guide mechanism for lateral translation of the corresponding first strip grating plate is arranged on the inner side of each short side beam of the distribution cabinet, and two groups of second guide mechanisms for lateral translation of the corresponding second strip grating plates are symmetrically arranged on the inner side of the long side beam of the distribution cabinet.
[0008] Furthermore, the first guide mechanism includes a first fixed guide slide seat and a second fixed guide slide seat, the first fixed guide slide seat is fixedly arranged on a side of the short side beam of the distribution cabinet away from the long side beam, and the second fixed guide slide seat is fixedly arranged on a side of the short side beam of the distribution cabinet close to the long side beam, and a section of the first support beam is formed on the side of the first fixed guide slide seat and the second fixed guide slide seat close to the long side beam of the distribution cabinet, and the upper and lower ends of the first support beam are respectively fixedly connected to the first guide rod, and the two ends of the first strip grid plate are respectively formed with a first strip plate perpendicular to the body, and the first strip plates are respectively movably sleeved on the corresponding two first guide rods The two first guide rods located on the first fixed guide slide seat are both sleeved with a first return spring, and the two ends of each of the first return springs respectively abut the corresponding first strip plate and the first support beam, and the middle parts of the first fixed guide slide seat and the second fixed guide slide seat are both formed with a first sliding groove, and a first limiting block is slidably embedded in the first sliding groove of the first fixed guide slide seat, and a first screw rod is axially connected to the end of the first fixed guide slide seat away from the first sliding groove, and one end of the first screw rod passes through the first limit block and is threadedly matched with the first limit block, and a limit bolt is fastened and connected in the first sliding groove of the second fixed guide slide seat.
[0009] Furthermore, the second guide mechanism includes a third fixed guide slide seat and a fourth fixed guide slide seat, the third fixed guide slide seat is fixedly arranged on one side of the long side beam of the distribution cabinet close to the short side beam, the fourth fixed guide slide seat is fixedly arranged at the middle position of the long side beam of the distribution cabinet close to the middle, the third fixed guide slide seat and the fourth fixed guide slide seat are formed with a second support beam on the opposite side, each of the second support beams is fixedly connected to a second guide rod at the upper and lower ends, and the second strip plates perpendicular to the body are formed at both ends of the second strip grid plate, and each of the second strip plates is movably sleeved on the corresponding two second On the guide rod, the middle parts of the third fixed guide slide seat and the fourth fixed guide slide seat are both formed with a second sliding groove, a second limit block is slidably embedded in the second sliding groove of the third fixed guide slide seat, and a second screw rod is axially connected to the end of the third fixed guide slide seat away from the second sliding groove, one end of the second screw rod passes through the second limit block and is threadedly engaged with the second screw rod, and a pulling slider is slidably embedded in the second sliding groove of the fourth fixed guide slide seat, one side of the pulling slider is fixedly connected to the second strip plate corresponding to the second strip grating plate, and the other side of the pulling slider is connected to the output end of the staggered mechanism.
[0010] Furthermore, the staggered mechanism includes an electric push rod, a double-hole rope lock, a limit switch and two first steel wires. The electric push rod and the limit switch are fixedly arranged on the inner top of the distribution cabinet. One end of the two first steel wires are respectively fixedly connected to the opposite end of the two second strip grating plates, and the other end is fixedly connected to the double-hole rope lock. The double-hole rope lock is fixedly connected to the output shaft of the electric push rod through a hinge. A bracket is fixedly arranged between the two second strip grating plates, and two first fixed pulleys are symmetrically arranged on the bracket. The middle parts of the two first steel wires are respectively fitted and wound around the corresponding first fixed pulleys. A contact piece for contacting the limit switch is fixedly connected to the output end of the electric push rod.
[0011] Furthermore, the pulling mechanism includes a right-angle fixed bracket, a second steel wire and a second fixed pulley, the right-angle fixed bracket is fixedly arranged between the first strip grating plate and the second strip grating plate, the second fixed pulley is axially arranged in the middle part of the right-angle fixed bracket, the two ends of the second steel wire are respectively fixedly connected to the first strip grating plate and the second strip grating plate, and the middle part of the second steel wire is fitted and wound around the second fixed pulley.
[0012] Furthermore, the main body of the double-hole rope lock is cylindrical, with threaded holes symmetrically arranged at both ends, and two symmetrically distributed rope holes perpendicular to its own axial direction are formed in the middle, the rope holes pass through the corresponding threaded holes, and a locking bolt is screwed into each threaded hole. The hinge is U-shaped, and its two ends are rotatably sleeved on the locking bolts at both ends of the double-hole rope lock. A transfer column is axially connected to the middle part of the hinge, and the shaft end of the electric push rod is threadedly connected to the transfer column, and the contact piece is pressed between the transfer column and the shaft end of the electric push rod.
[0013] Furthermore, a strip slide groove is formed in the middle of the right-angle fixed bracket for the second fixed pulley to slide horizontally, and a third screw is also provided on the right-angle fixed bracket. The third screw is fixedly axially connected to the outer side of the right-angle fixed bracket, and a U-shaped push bracket is threadedly connected to the third screw. The two ends of the U-shaped push bracket are respectively socketed with the axial end of the second movable pulley from the outer side of the right-angle fixed bracket, and the axial direction of the third screw is consistent with the length direction of the strip slide groove.
[0014] Furthermore, the cover assembly includes an inner lining plate and four groups of magnetic control mechanisms respectively arranged at the four corners of the inner lining plate, the inner lining plate is located on the inner side of the cabinet and the area occupied by it completely covers the second heat dissipation grille hole, and a plurality of guide columns for the inner lining plate to move through are fixedly arranged on the inner wall of the cabinet wall of the distribution cabinet, and each group of the magnetic control mechanism includes an electromagnet, a sheet-like connecting arm and a second reset spring, the electromagnet is fixedly arranged at the corner of the inner lining plate, one end of the sheet-like connecting arm is fixedly connected to the outer side of the electromagnet, and the other end extends to the outer side of the inner lining plate, and a stud for fixing the sheet-like connecting arm is also fixedly arranged on the cabinet wall of the distribution cabinet, one end of the sheet-like connecting arm is fixedly connected to the top of the stud by a gasket bolt, and the second reset spring is sleeved on the stud, and the two ends of the second reset spring respectively resist the cabinet wall and the sheet-like connecting arm of the distribution cabinet.
[0015] Furthermore, a circle of rubber sealing gasket is attached to one side of the inner lining plate close to the wall of the power distribution cabinet, and the area occupied by the rubber sealing gasket completely covers the second heat dissipation grille holes.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] Firstly, the present invention realizes the purpose of quickly closing the heat dissipation grille on the top of the power distribution cabinet under extreme conditions by staggered opening and closing, and effectively prevents sand and dust particles from entering the power distribution cabinet from the top;
[0018] Secondly, the present invention realizes the purpose of quickly closing the large-area heat dissipation holes on the side wall of the cabinet by means of magnetic attraction, effectively preventing sand and dust particles from entering from the side wall of the cabinet;
[0019] Thirdly, the present invention realizes the purpose of actively dissipating the heat in the cabinet by configuring a centrifugal fan and a heat dissipation aluminum block, and is equipped with a filter element to filter and intercept particulate matter in the dusty air, thereby preventing the dust particles from adhering to the heat dissipation block and affecting the heat conduction efficiency;
[0020] Fourthly, the staggered opening and closing components and the cover components of the present invention occupy very little space in the cabinet, which ensures the sealing effect while not occupying the installation space of the components in the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 The three-dimensional structure diagram of the power distribution cabinet of the present invention is shown in FIG. Figure 1 ;
[0022] Figure 2 The three-dimensional structure diagram of the power distribution cabinet of the present invention is shown in FIG. Figure 2 ;
[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the power distribution cabinet of the present invention. Figure 3 ;
[0024] Figure 4 It is a three-dimensional structural schematic diagram of the top beam part of the power distribution cabinet of the present invention;
[0025] Figure 5 yes Figure 4 A schematic diagram of the structure enlargement at point A;
[0026] Figure 6 yes Figure 4 A schematic plan view of a cross section;
[0027] Figure 7 yes Figure 6 A schematic diagram of the structure at B in FIG.
[0028] Figure 8 yes Figure 6 A schematic diagram of the structure at position C in FIG.
[0029] Fig. 9 yes Figure 6 A schematic diagram of the structure at D in FIG.
[0030] Fig.10 The partial three-dimensional structure of the staggered opening and closing component of the present invention is shown in FIG. Figure 1 ;
[0031] Fig.11 The partial three-dimensional structure of the staggered opening and closing component of the present invention is shown in FIG. Figure 2 ;
[0032] Fig.12 It is a three-dimensional structural schematic diagram of the cover assembly of the present invention;
[0033] Fig.13 yes Fig.12 A schematic diagram of the structure at position E in FIG.
[0034] Fig.14 yes Fig.13 A local structural plane section view;
[0035] The numbers in the figure are: 1-distribution cabinet; 2-long side beam; 3-short side beam; 4-first heat dissipation grille hole; 5-second heat dissipation grille hole; 6-aluminum heat dissipation fin plate; 7-centrifugal exhaust fan; 8-filter element installation platform; 9-exhaust grille hole; 10-intake grille hole; 11-first strip grille plate; 12-second strip grille plate; 13-first fixed guide slide seat; 14-second fixed guide slide seat; 15-first support beam; 16-first guide rod; 17-first strip plate; 18-first return spring; 19-first sliding groove; 20-first limit block; 21-first screw rod; 22-limit bolt; 23-hexagonal nut; 24-third fixed guide slide seat; 25-fourth fixed guide slide seat; 26-second support beam; 27-second guide rod; 28-second strip plate; 29-second sliding groove ;30-second limit block;31-second screw rod;32-pull slider;33-clamp structure;34-rope ring;35-electric push rod;36-double-hole rope lock;37-limit switch;38-first steel wire;39-bracket;40-first fixed pulley;41-contact piece;42-right-angle fixed bracket;43-second steel wire;44-second fixed pulley;45-threaded hole;46-rope hole;47-locking bolt;48-adapter column;49-strip slide;50-third screw rod;51-ball bearing;52-plane bearing;53-capped bolt;54-U-type push frame;55-inner lining plate;56-guide column;57-electromagnet;58-sheet connecting arm;59-second return spring;60-gasket bolt;61-rubber sealing gasket;62-hinged part;63-stud. DETAILED DESCRIPTION
[0036] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0037] Reference Figures 1 to 14As shown, an outdoor high-voltage power distribution cabinet is provided, wherein the three side beams on the non-front side of the top eave of the power distribution cabinet 1 are all provided with first heat dissipation grille holes 4, the lower half of the cabinet walls on both sides of the power distribution cabinet 1 are all provided with second heat dissipation grille holes 5, an aluminum heat dissipation fin plate 6 is arranged on the inner side of the power distribution cabinet 1 near the back plate, a plurality of centrifugal exhaust fans 7 distributed laterally side by side are arranged above the aluminum heat dissipation fin plate 6, the fin guides of the aluminum heat dissipation fin plate 6 are arranged longitudinally, a filter element installation platform 8 is arranged below the aluminum heat dissipation fin plate 6, an exhaust grille hole 9 is arranged on the back plate of the power distribution cabinet 1 at a position directly opposite to the centrifugal exhaust fan 7, an air intake grille hole 10 is also arranged on the back plate of the power distribution cabinet 1 and is lower than the filter element installation platform 8, an interlaced opening and closing component for opening and closing the first heat dissipation grille holes 4 on the three side beams is arranged on the inner top of the power distribution cabinet 1, and a cover component for opening and closing the second heat dissipation grille holes 5 is arranged on the inner side of the cabinet walls on both sides of the power distribution cabinet 1.
[0038] The high-voltage power distribution cabinet 1 of the present invention is used in conjunction with an air turbidity meter arranged outside the cabinet group. When sandstorm weather such as a sandstorm strikes, the turbidity meter detects a sudden increase in the dust content in the air, and the main control center of the cabinet group controls to start each power distribution cabinet 1 to work, and the first heat dissipation grille holes 4 on the three side beams on the top of the power distribution cabinet 1 are closed by the action of the staggered opening and closing components, and the second heat dissipation grille holes 5 on the cabinet walls on both sides of the power distribution cabinet 1 are closed by the action of the cover component, thereby preventing dust from penetrating into the inside of the power distribution cabinet 1;
[0039] The aluminum heat dissipation fins 6 in the distribution cabinet 1 are fitted on the back plate of the high-heat components to dissipate the main heat. An airflow is formed by a row of centrifugal exhaust fans above, entering from the air inlet grille hole 10, and then passing through the aluminum heat dissipation fins 6 and discharged from the exhaust grille hole 9 to form a vertical heat dissipation duct. The air filter element pre-installed on the filter element installation platform 8 can effectively filter and block the sand and dust particles mixed in the airflow, ensuring that the main heat in the cabinet can still be dissipated even in a sandstorm environment, and cooperating with the sudden drop in temperature brought about by the sandstorm weather to ensure the normal operation of the distribution cabinet 1; and after the sandstorm weather, the staggered opening and closing assembly and the covering assembly reopen the first heat dissipation grille hole 4 and the second heat dissipation grille hole 5 respectively, thereby opening all the heat dissipation paths of the distribution cabinet 1.
[0040] In order to minimize the space in the cabinet occupied by the components for blocking the first heat dissipation grille, the following features are specifically set:
[0041] The staggered opening and closing component includes two first strip grating plates 11 respectively fitted on the inner walls of the two short side beams 3 on the top of the distribution cabinet 1, two second strip grating plates 12 symmetrically and fitted on the inner walls of the long side beams 2 on the top of the distribution cabinet 1, and a group of staggered mechanisms for driving the two second strip grating plates 12 to move toward each other, and a pulling mechanism for maintaining synchronous movement of each first strip grating plate 11 and the corresponding second strip grating plate 12 is arranged between the ends close to each other, and a first guide mechanism for lateral translation of the corresponding first strip grating plate 11 is arranged on the inner side of each short side beam 3 of the distribution cabinet 1, and two groups of second guide mechanisms for lateral translation of the corresponding second strip grating plates 12 are symmetrically arranged on the inner side of the long side beam 2 of the distribution cabinet 1.
[0042] The heat dissipation holes arranged on the first strip grid plate 11 and the second strip grid plate 12 of the present invention are consistent with the arrangement spacing and hole width of the heat dissipation holes on the short side beam 3 and the long side beam 2. The two second strip grid plates 12 are driven to approach each other by a distance of the width of a heat dissipation hole through the action of the staggered mechanism, so that the heat dissipation holes on the second strip grid plate 12 and the long side beam 2 that were originally kept open in a one-to-one correspondence are misaligned, so that the second strip grid plate 12 closes the heat dissipation holes on the inner side of the long side beam 2 as a whole; at the same time, the translation of the second strip grid plate 12 will drive the first strip grid plate 11 connected to it to move synchronously by a distance of the width of a heat dissipation hole through the pulling mechanism, so that the first strip grid plate 11 closes the heat dissipation holes on the inner side of the short side beam 3 as a whole.
[0043] The first guide mechanism and the second guide mechanism are respectively used to ensure the stable horizontal movement of the first strip grid plate 11 and the second strip grid plate 12, and most of the components are hidden in the inner space of the short side beam 3 and the long side beam 2, without occupying the top space in the distribution cabinet 1, thereby greatly saving installation space.
[0044] More specifically, the first guide mechanism is composed as follows:
[0045] The first guide mechanism includes a first fixed guide slide seat 13 and a second fixed guide slide seat 14. The first fixed guide slide seat 13 is fixedly arranged on the side of the short side beam 3 of the distribution cabinet 1 away from the long side beam 2, and the second fixed guide slide seat 14 is fixedly arranged on the side of the short side beam 3 of the distribution cabinet 1 close to the long side beam 2. The first fixed guide slide seat 13 and the second fixed guide slide seat 14 are both formed with a first support beam 15 on the side close to the long side beam 2 of the distribution cabinet 1. The upper and lower ends of the first support beam 15 are respectively fixedly connected with a first guide rod 16. The first strip plates 17 perpendicular to the body are formed at both ends of the first strip grid plate 11. The first strip plates 17 are respectively movably sleeved on the corresponding two first guide rods 16, wherein the first strip plates 17 are located at The two first guide rods 16 of the first fixed guide slide seat 13 are both sleeved with a first return spring 18, and the two ends of each of the first return springs 18 respectively abut against the corresponding first strip plate 17 and the first support beam 15, and the middle parts of the first fixed guide slide seat 13 and the second fixed guide slide seat 14 are both formed with a first sliding groove 19, and a first limiting block 20 is slidably embedded in the first sliding groove 19 of the first fixed guide slide seat 13, and a first screw rod 21 is axially connected to the end of the first fixed guide slide seat 13 away from the first sliding groove 19, and one end of the first screw rod 21 passes through the first limiting block 20 and is threadedly matched therewith, and a limiting bolt 22 is fastened and connected in the first sliding groove 19 of the second fixed guide slide seat 14.
[0046] The first fixed guide slide seat 13 and the second fixed guide slide seat 14 are respectively fixedly installed at the two ends of the inner side of the short side beam 3, and the first strip grille plate 11 is located between the two. The first strip plates 17 at the two ends slide and translate along the first guide rods 16 that are slidably sleeved, so as to realize the opening and closing of the first heat dissipation grille hole 4 by translation. The first strip grille plate 11 is pulled on the first guide rod 16 by the pulling mechanism to translate a distance of the heat dissipation hole width, so as to close the first heat dissipation grille hole 4. In this process, the first strip plate 17 at one end of the first strip grille plate 11 will compress the first return spring 18. When the pulling mechanism is reset, the first return spring 18 will push the first strip grille plate 11 back, so that the first strip grille plate 11 reopens the first heat dissipation grille hole 4;
[0047] The first limiting block 20 contacts and blocks the first strip plate 17 that is close to it, so as to limit the horizontal movement of the first strip grille plate 11. The limiting bolt 22 passes through one end of the first sliding groove 19 and is screwed with a hexagonal nut 23. The hexagonal nut 23 is sunk in the first sliding groove 19, so as to lock the limiting bolt 22. The limiting bolt 22 blocks the first strip plate 17 that is close to it, so as to limit the reset movement of the first strip grille plate 11. In this way, it is ensured that when the corresponding first strip plate 17 is stopped by the first limiting block 20, the first strip grille plate 11 completely covers the first heat dissipation grille hole 4. During the reset process, when the corresponding first strip plate 17 is stopped by the limiting bolt 22, the first strip grille plate 11 completely opens the first heat dissipation grille hole 4 that was originally covered.
[0048] By rotating the first screw rod 21 and loosening the hexagonal nut 23, the limit adjustment can be performed more accurately and flexibly during the installation process, ensuring the accuracy of the position of the first strip grille plate 11 when the first heat dissipation grille hole 4 is opened and closed.
[0049] To be more specific, the second guide mechanism is composed as follows:
[0050] The second guide mechanism includes a third fixed guide slide seat 24 and a fourth fixed guide slide seat 25. The third fixed guide slide seat 24 is fixedly arranged on one side of the long side beam 2 of the distribution cabinet 1 close to the short side beam 3, and the fourth fixed guide slide seat 25 is fixedly arranged in the middle position of the long side beam 2 of the distribution cabinet 1 close to the middle. The third fixed guide slide seat 24 and the fourth fixed guide slide seat 25 are formed with a second support beam 26 on the opposite side. The upper and lower ends of each second support beam 26 are fixedly connected to a second guide rod 27. The two ends of the second strip grid plate 12 are formed with a second strip plate 28 perpendicular to the body. Each of the second strip plates 28 is movably mounted on the corresponding two second guide rods 27. The middle parts of the third fixed guide slide seat 24 and the fourth fixed guide slide seat 25 are formed with a second support beam 26. Two sliding grooves 29, a second limit block 30 is slidably embedded in the second sliding groove 29 of the third fixed guide slide seat 24, and a second screw rod 31 is axially connected to the end of the third fixed guide slide seat 24 away from the second sliding groove 29, and one end of the second screw rod 31 passes through the second limit block 30 and is threadedly engaged with it. A pulling slider 32 is slidably embedded in the second sliding groove 29 of the fourth fixed guide slide seat 25, and one side of the pulling slider 32 is fixedly connected to the second strip plate 28 corresponding to the second strip grid plate 12, and specifically, a clamping plate structure 33 is formed on this side for clamping the corresponding second strip plate 28, and the other side of the pulling slider 32 is connected to the output end of the staggered mechanism, and specifically, a rope ring 34 is formed on this side for connecting one end of the first steel wire 38 described below.
[0051] The third fixed guide slide 24 and the fourth fixed guide slide 25 are also fixedly installed on the inner wall of the long side beam 2, and the second strip grille plate 12 is driven to move horizontally along the second guide rod 27 by a distance of the width of the heat dissipation hole through the action of the staggered mechanism. During the installation process, the position of the second limit block 30 is accurately adjusted by rotating the second screw 31 to ensure that when the second strip grille plate 12 is stopped by the second limit block 30 during the resetting process, it is in a position to fully open the first heat dissipation grille hole 4.
[0052] In order to accurately drive the first strip grid plate 11 and the second strip grid plate 12 to move back and forth by a distance of the width of a heat dissipation hole, the following features are specifically set:
[0053] The staggered mechanism includes an electric push rod 35, a double-hole rope lock 36, a limit switch 37 and two first steel wires 38. The electric push rod 35 and the limit switch 37 are fixedly arranged on the inner top of the distribution cabinet 1. One end of the two first steel wires 38 are respectively fixedly connected to the opposite ends of the two second strip grid plates 12, and the other ends are both fixedly connected to the double-hole rope lock 36. The double-hole rope lock 36 is fixedly connected to the output shaft of the electric push rod 35 through a hinge 62. A bracket 39 is fixedly arranged between the two second strip grid plates 12. Two first fixed pulleys 40 are symmetrically arranged on the bracket 39. The middle parts of the two first steel wires 38 are respectively fitted and wound around the corresponding first fixed pulleys 40. A contact piece 41 for contacting the limit switch 37 is fixedly connected to the output end of the electric push rod 35.
[0054] Through the precise and controllable extension and retraction of the output shaft of the electric push rod 35, the extension length is set to a distance of the width of a heat dissipation hole. During the process of the output shaft of the electric push rod 35 retracting a distance of the width of a heat dissipation hole, the two first steel wires 38 are synchronously pulled by the double-hole rope lock 36, and each first steel wire 38 drives the second strip grille plate 12 connected thereto to move a distance of the width of a heat dissipation hole, thereby achieving complete closure of the corresponding first heat dissipation grille hole 4 by the second strip grille plate 12. At the same time, the contact piece 41 on the output shaft of the electric push rod 35 triggers the limit switch 37 to stop the electric push rod 35 from further retracting.
[0055] In order to achieve the synchronous movement of the second strip grid plate 12 and the first strip grid plate 11, the following features are specifically set:
[0056] The pulling mechanism includes a right-angle fixed bracket 4239, a second steel wire 43 and a second fixed pulley 44. The right-angle fixed bracket 4239 is fixedly arranged between the first strip grid plate 11 and the second strip grid plate 12. The second fixed pulley 44 is axially arranged in the middle part of the right-angle fixed bracket 4239. The two ends of the second steel wire 43 are respectively fixedly connected to the first strip grid plate 11 and the second strip grid plate 12. The middle part of the second steel wire 43 is fitted around the second fixed pulley 44.
[0057] When the electric push rod 35 retracts, the second strip grid plate 12 is pulled by the cooperation of the first steel wire 38 and the first fixed pulley 40, and the second strip grid plate 12 synchronously pulls the first strip grid plate 11 by the cooperation of the second steel wire 43 and the second fixed pulley 44, so that the first strip grid plate 11 and the second strip grid plate 12 can simultaneously complete the sealing of the corresponding first heat dissipation grille holes 4;
[0058] When the electric push rod 35 is extended, under the elastic force of the first reset spring 18, the first strip grille plate 11 will simultaneously drive the second strip grille plate 12 to translate and reset a distance of the heat dissipation hole width through the second steel wire 43 and the second fixed pulley 44, thereby realizing that the first strip grille plate 11 and the second strip grille plate 12 simultaneously complete the reopening of the corresponding first heat dissipation grille holes 4.
[0059] In order to ensure that the first steel wire 38 can be flexibly and accurately adjusted to be in a taut state during the installation process, the following features are specifically provided:
[0060] The main body of the double-hole rope lock 36 is cylindrical, with threaded holes 45 symmetrically arranged at both ends, and two symmetrically distributed rope holes 46 perpendicular to its own axial direction are formed in the middle, and the rope holes 46 pass through the corresponding threaded holes 45, and a locking bolt 47 is screwed into each threaded hole 45. The hinge 62 is U-shaped, and its two ends are rotatably sleeved on the locking bolts 47 at both ends of the double-hole rope lock 36. The middle part of the hinge 62 is axially connected to a transfer column 48, and the shaft end of the electric push rod 35 is threadedly connected to the transfer column 48, and the contact piece 41 is tightly arranged between the transfer column 48 and the shaft end of the electric push rod 35.
[0061] After one end of the first steel wire 38 is connected to the above-mentioned rope ring 34, it is passed around the first fixed pulley 40 and then through the corresponding rope hole 46 of the double-hole rope lock 36. The first steel wire 38 is then tightened to put it in a taut state and then the locking bolt 47 on that side is tightened. The tightening connection of the first steel wire 38 on the other side is completed in the same way. In this way, the first steel wire 38 can be conveniently tightened during the installation process, thereby avoiding unnecessary activity clearance that causes the electric push rod 35 to have an invalid telescopic stroke.
[0062] In order to flexibly adjust and tighten the second steel wire 43 during installation, the following features are specifically provided:
[0063] The middle part of the right angle fixed bracket 4239 is formed with a strip-shaped slide groove 49 for the second fixed pulley 44 to slide horizontally. The right angle fixed bracket 4239 is also provided with a third screw 50, which is fixedly connected to the outer side of the right angle fixed bracket 4239. A ball bearing 51 is embedded in the position of the right angle fixed bracket for the third screw 50 to connect. One end of the third screw 50 passes through the inner ring of the ball bearing 51, and the third screw 50 is fixedly connected to the inner ring of the ball bearing 51. A plane bearing 52 is provided at the through end of the third screw rod 50, and the plane bearing 52 is locked to the end of the third screw rod 50 by a cap bolt 53, thereby ensuring the smooth rotation of the third screw rod 50. A U-shaped push frame 54 is threadedly connected to the third screw rod 50, and the two ends of the U-shaped push frame 54 are respectively connected to the shaft end of the second movable pulley from the outside of the right-angle fixed bracket 4239, and the axial direction of the third screw rod 50 is consistent with the length direction of the strip slide groove 49.
[0064] During the installation process, the third screw 50 is rotated to drive the U-shaped push frame 54 threadedly matched with it to translate, and the second fixed pulley 44 is driven to move by the U-shaped push frame 54, and then the first steel wire 38 wound around is tightened by the movement of the second fixed pulley 44, thereby ensuring that there is no excess movable clearance during the synchronous translation of the first strip grid plate 11 and the second strip grid plate 12.
[0065] In order to completely seal the second heat dissipation grille holes 5 distributed in a matrix, the following features are specifically provided:
[0066] The cover assembly includes an inner lining plate 55 and four groups of magnetic control mechanisms respectively arranged at the four corners of the inner lining plate 55. The inner lining plate 55 is located inside the cabinet and its area completely covers the second heat dissipation grille hole 5. A plurality of guide posts 56 for the inner lining plate 55 to move through are fixedly arranged on the inner wall of the cabinet of the power distribution cabinet 1. Each group of magnetic control mechanisms includes an electromagnet 57, a sheet-shaped connecting arm 58 and a second reset spring 59. The electromagnet 57 is fixedly arranged at the corner of the inner lining plate 55. At the corner, one end of the sheet-like connecting arm 58 is fixedly connected to the outer side of the electromagnet 57, and the other end extends to the outer side of the inner lining plate 55. A stud 63 for fixing the sheet-like connecting arm 58 is also fixedly provided on the cabinet wall of the distribution cabinet 1. One end of the sheet-like connecting arm 58 is fixedly connected to the top of the stud 63 through a gasket bolt 60. The second return spring 59 is sleeved on the stud 63, and the two ends of the second return spring 59 respectively resist the cabinet wall of the distribution cabinet 1 and the sheet-like connecting arm 58.
[0067] The cabinet wall of the distribution cabinet 1 is made of sheet metal. A strong magnet is generated by energizing the electromagnet 57, which in turn drives the inner lining plate 55 to overcome the elastic force of the four second reset springs 59 and adsorb to the inner side of the cabinet wall of the distribution cabinet 1, thereby achieving the overall closure of the inner lining plate 55; when the electromagnet 57 is powered off, the inner lining plate 55 loses its magnetic attraction to the cabinet wall of the distribution cabinet 1, and then under the action of the four second reset springs 59, it separates from the cabinet wall again, thereby opening the second heat dissipation grille hole 5.
[0068] A circle of rubber sealing gasket 61 is attached to one side of the inner lining plate 55 close to the wall of the power distribution cabinet 1 , and the area occupied by the rubber sealing gasket completely covers the second heat dissipation grille holes 5 .
[0069] Since the inner lining plate 55 is a thin plate, it is difficult to process the countersunk hole when installing the electromagnet 57, and the screws fixing the electromagnet 57 from the back of the inner lining plate 55 will inevitably contact the cabinet wall, thereby causing the inner lining plate 55 to not fit completely with the cabinet wall. In order to avoid the cost of stamping the inner lining plate 55, a rubber sealing gasket 61 with a thickness exceeding the thickness of the nut is provided to solve the gap problem between the inner lining plate 55 and the cabinet wall.
[0070] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.
Claims
1. An outdoor high-voltage power distribution cabinet, wherein the three side beams of the top eaves of the power distribution cabinet (1) are all provided with first heat dissipation grille holes (4), the lower halves of the cabinet walls on both sides of the power distribution cabinet (1) are all provided with second heat dissipation grille holes (5), an aluminum heat dissipation fin plate (6) is arranged on the inner side of the power distribution cabinet (1) near the back plate, a plurality of centrifugal exhaust fans (7) are arranged above the aluminum heat dissipation fin plate (6) and are arranged in parallel in a transverse direction, the fin guide of the aluminum heat dissipation fin plate (6) is arranged in a longitudinal direction, and the invention is characterized in that: A filter element installation platform (8) is provided below the aluminum heat dissipation fin plate (6); an exhaust grille hole (9) is provided on the back plate of the power distribution cabinet (1) at a position directly opposite to the centrifugal exhaust fan (7); an air intake grille hole (10) is also provided on the back plate of the power distribution cabinet (1) and is lower than the filter element installation platform (8); a staggered opening and closing component for opening and closing the first heat dissipation grille holes (4) on the three side beams is provided on the top of the inner side of the power distribution cabinet (1); and a cover component for opening and closing the second heat dissipation grille holes (5) is provided on the inner sides of the cabinet walls on both sides of the power distribution cabinet (1).
2. An outdoor high-voltage distribution cabinet according to claim 1, characterized in that: The staggered opening and closing assembly comprises two first strip grid plates (11) respectively fitted on the inner walls of two short side beams (3) at the top of the power distribution cabinet (1), two second strip grid plates (12) symmetrically and fitted on the inner walls of the long side beams (2) at the top of the power distribution cabinet (1), and a group of staggered mechanisms for driving the two second strip grid plates (12) to move toward each other, a pulling mechanism for maintaining synchronous movement of each first strip grid plate (11) and the corresponding second strip grid plate (12) is provided between the ends close to each other, a first guide mechanism for lateral translation of the corresponding first strip grid plate (11) is provided on the inner side of each short side beam (3) of the power distribution cabinet (1), and two groups of second guide mechanisms for lateral translation of the corresponding second strip grid plates (12) are symmetrically provided on the inner side of the long side beams (2) of the power distribution cabinet (1).
3. An outdoor high-voltage distribution cabinet according to claim 2, characterized in that: The first guide mechanism comprises a first fixed guide slide seat (13) and a second fixed guide slide seat (14); the first fixed guide slide seat (13) is fixedly arranged on a side of the short side beam (3) of the distribution cabinet (1) away from the long side beam (2); the second fixed guide slide seat (14) is fixedly arranged on a side of the short side beam (3) of the distribution cabinet (1) close to the long side beam (2); the first fixed guide slide seat (13) and the second fixed guide slide seat (14) are both formed with a first support beam (15) on one side close to the long side beam (2) of the distribution cabinet (1); the upper and lower ends of the first support beam (15) are respectively fixedly connected to a first guide rod (16); the first two ends of the first strip grid plate (11) are both formed with a first strip plate (17) perpendicular to the body; the first strip plates (17) are respectively movably sleeved on the corresponding two first guide rods (16); wherein ... A first return spring (18) is sleeved on the two first guide rods (16) of the first fixed guide slide seat (13), and the two ends of each first return spring (18) respectively abut against the corresponding first strip plate (17) and the first support beam (15). The middle parts of the first fixed guide slide seat (13) and the second fixed guide slide seat (14) are both formed with a first sliding groove (19). A first limiting block (20) is slidably embedded in the first sliding groove (19) of the first fixed guide slide seat (13). A first screw rod (21) is axially connected to one end of the first fixed guide slide seat (13) away from the first sliding groove (19). One end of the first screw rod (21) passes through the first limiting block (20) and is threadedly engaged with the first limiting block (20). A limiting bolt (22) is fastened and connected in the first sliding groove (19) of the second fixed guide slide seat (14).
4. An outdoor high-voltage distribution cabinet according to claim 2, characterized in that: The second guide mechanism comprises a third fixed guide slide seat (24) and a fourth fixed guide slide seat (25), wherein the third fixed guide slide seat (24) is fixedly arranged on a side of the long side beam (2) of the power distribution cabinet (1) close to the short side beam (3), and the fourth fixed guide slide seat (25) is fixedly arranged at a middle position of the long side beam (2) of the power distribution cabinet (1) close to the middle, and the third fixed guide slide seat (24) and the fourth fixed guide slide seat (25) are both formed with a second support beam (26) on the opposite side, and each of the second support beams (26) is fixedly connected to a second guide rod (27) at the upper and lower ends, and the second strip plates (28) perpendicular to the body are formed at both ends of the second strip grid plate (12), and each of the second strip plates (28) is movably sleeved on the corresponding two second guide rods (27). The middle parts of the third fixed guide slide seat (24) and the fourth fixed guide slide seat (25) are both formed with a second sliding groove (29), and a second limit block (30) is slidably embedded in the second sliding groove (29) of the third fixed guide slide seat (24). A second screw rod (31) is axially connected to one end of the third fixed guide slide seat (24) away from the second sliding groove (29), and one end of the second screw rod (31) passes through the second limit block (30) and is threadedly engaged therewith. A pulling slider (32) is slidably embedded in the second sliding groove (29) of the fourth fixed guide slide seat (25), and one side of the pulling slider (32) is fixedly connected to the second strip plate (28) corresponding to the second strip grid plate (12), and the other side of the pulling slider (32) is connected to the output end of the interlocking mechanism.
5. An outdoor high-voltage distribution cabinet according to claim 2, characterized in that: The staggered mechanism comprises an electric push rod (35), a double-hole rope lock (36), a limit switch (37) and two first steel wires (38). The electric push rod (35) and the limit switch (37) are fixedly arranged on the inner top of the power distribution cabinet (1). One end of the two first steel wires (38) is respectively fixedly connected to the opposite ends of the two second strip grid plates (12), and the other end is fixedly connected to the double-hole rope lock (36). The double-hole rope lock (36) is fixedly connected to the output shaft of the electric push rod (35) through a hinge (62). A bracket (39) is fixedly arranged between the two second strip grid plates (12). Two first fixed pulleys (40) are symmetrically arranged on the bracket (39). The middle parts of the two first steel wires (38) are respectively fitted and wound around the corresponding first fixed pulleys (40). A contact piece (41) for contacting the limit switch (37) is fixedly connected to the output end of the electric push rod (35).
6. An outdoor high-voltage distribution cabinet according to claim 2, characterized in that: The pulling mechanism comprises a right-angle fixed bracket (42) (39), a second steel wire (43) and a second fixed pulley (44); the right-angle fixed bracket (42) (39) is fixedly arranged between the first strip grid plate (11) and the second strip grid plate (12); the second fixed pulley (44) is axially arranged in the middle part of the right-angle fixed bracket (42) (39); the two ends of the second steel wire (43) are respectively fixedly connected to the first strip grid plate (11) and the second strip grid plate (12); the middle part of the second steel wire (43) is fitted and wound around the second fixed pulley (44).
7. An outdoor high-voltage distribution cabinet according to claim 5, characterized in that: The main body of the double-hole rope lock (36) is cylindrical, with threaded holes (45) symmetrically arranged at both ends, and two rope holes (46) symmetrically distributed and perpendicular to the axis direction of the double-hole rope lock are formed in the middle, and the rope holes (46) pass through the corresponding threaded holes (45), and each threaded hole (45) is screwed with a locking bolt (47). The hinge (62) is U-shaped, and its two ends are rotatably sleeved on the locking bolts (47) at both ends of the double-hole rope lock (36). The middle part of the hinge (62) is axially connected to a transfer column (48), and the shaft end of the electric push rod (35) is threadedly connected to the transfer column (48), and the contact piece (41) is pressed and arranged between the transfer column (48) and the shaft end of the electric push rod (35).
8. An outdoor high-voltage distribution cabinet according to claim 6, characterized in that: A strip-shaped slide groove (49) is formed in the middle of the right-angle fixed bracket (42) (39) for the second fixed pulley (44) to slide horizontally. A third screw rod (50) is also provided on the right-angle fixed bracket (42) (39). The third screw rod (50) is fixedly axially connected to the outer side of the right-angle fixed bracket (42) (39). A U-shaped push bracket (54) is threadedly connected to the third screw rod (50). The two ends of the U-shaped push bracket (54) are respectively sleeved with the axial end of the second movable pulley from the outer side of the right-angle fixed bracket (42) (39). The axial direction of the third screw rod (50) is consistent with the length direction of the strip-shaped slide groove (49).
9. An outdoor high-voltage distribution cabinet according to claim 1, characterized in that: The cover assembly comprises an inner lining plate (55) and four groups of magnetic control mechanisms respectively arranged at the four corners of the inner lining plate (55); the inner lining plate (55) is located inside the cabinet and the area occupied by it completely covers the second heat dissipation grille hole (5); a plurality of guide posts (56) for the inner lining plate (55) to movably penetrate are fixedly arranged on the inner side wall of the cabinet wall of the power distribution cabinet (1); each group of the magnetic control mechanisms comprises an electromagnet (57), a sheet-shaped connecting arm (58) and a second reset spring (59); the electromagnet (57) is fixedly arranged at the corner of the inner lining plate (55) One end of the sheet-like connecting arm (58) is fixedly connected to the outer side of the electromagnet (57), and the other end extends to the outer side of the inner lining plate (55). A stud (63) for fixing the sheet-like connecting arm (58) is also fixedly arranged on the cabinet wall of the distribution cabinet (1). One end of the sheet-like connecting arm (58) is fixedly connected to the top of the stud (63) through a gasket bolt (60). The second return spring (59) is sleeved on the stud (63), and the two ends of the second return spring (59) respectively contact the cabinet wall of the distribution cabinet (1) and the sheet-like connecting arm (58).
10. An outdoor high-voltage power distribution cabinet according to claim 1, characterized in that: A circle of rubber sealing gasket (61) is attached to one side of the inner lining plate (55) close to the wall of the power distribution cabinet (1), and the area occupied by the rubber sealing ring completely covers the second heat dissipation grille hole (5).