CN112652985A - Natural heat dissipation system of large-current switch cabinet based on heat pipe technology - Google Patents
Natural heat dissipation system of large-current switch cabinet based on heat pipe technology Download PDFInfo
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- CN112652985A CN112652985A CN202011520930.1A CN202011520930A CN112652985A CN 112652985 A CN112652985 A CN 112652985A CN 202011520930 A CN202011520930 A CN 202011520930A CN 112652985 A CN112652985 A CN 112652985A
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 46
- 238000005516 engineering process Methods 0.000 title claims abstract description 25
- 238000010521 absorption reaction Methods 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 239000000779 smoke Substances 0.000 claims abstract description 8
- 230000003068 static effect Effects 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 3
- 230000000712 assembly Effects 0.000 abstract description 4
- 238000000429 assembly Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000004880 explosion Methods 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 208000013883 Blast injury Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
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Abstract
The invention belongs to the technical field of switch cabinet heat dissipation, and particularly relates to a natural heat dissipation system of a high-current switch cabinet based on a heat pipe technology. A bus chamber, a breaker chamber, a cable chamber and an instrument chamber are arranged in a switch cabinet body, and a plurality of groups of temperature sensors, a plurality of groups of humidity sensors and a plurality of groups of smoke sensors are also arranged; heat absorption assemblies are respectively arranged in the bus chamber, the breaker chamber and the cable chamber, and contact boxes are respectively connected in the bus chamber and the cable chamber; one end of the contact box group is connected with a vacuum circuit breaker in the circuit breaker chamber, the other end of the contact box group is connected with a branch busbar, and the other end of the branch busbar is connected with a main busbar on the busbar chamber; the other group of contact boxes is connected with the input end of a current transformer, and the output end of the current transformer is respectively connected with a grounding switch, a voltage transformer, a lightning arrester and a cable joint end through a busbar; the top of the switch cabinet body is provided with a radiator. The invention can realize the natural cooling of the switch cabinet and the on-line detection of the temperature rise of the switch cabinet, and improve the intelligent level of a heat dissipation system.
Description
Technical Field
The invention belongs to the technical field of switch cabinet heat dissipation, and particularly relates to a natural heat dissipation system of a high-current switch cabinet based on a heat pipe technology.
Background
Along with the continuous expansion of urban space, the power load is rapidly developed, the load density is larger and larger, the capacity of a single main transformer of a transformer substation is gradually increased, the 110kV planning capacity of the main transformers of B-type and above power supply areas is mainly 50MVA, and the rated current of a 10kV inlet cabinet is as high as 2887A. And the 12kV switch cabinet in China basically adopts KYN series metal removable closed switch equipment, the maximum bottleneck of the equipment is rated current, and the problem of heating of the switch cabinet is very serious in summer peak time. Among accidents of the transformer substation switch cabinet, 55% of the accidents occur in a high-current incoming cabinet and a connection cabinet, and the reason is that the switch cabinet accident is caused by overhigh temperature in the cabinet. Taking KYN 28-12 switch cabinet as an example, the cooling system adopts forced air cooling to ensure the temperature rise requirement of the switch cabinet. Forced air cooling has an accident source more, in case the fan breaks down, then the temperature in the cubical switchboard rises sharply, and first of all is that the movable plug spring in the contact box becomes soft under high temperature, and contact pressure descends, and the temperature rises, strikes sparks, finally causes the contact box to burn out, alternate short circuit, cubical switchboard explosion. Furthermore, one explosion rapidly spreads to other peripheral switch cabinets and other equipment, causing chain explosion. In addition, the switch cabinet runs at high temperature for a long time, the aging speed of the insulating part is accelerated, the service life of the switch cabinet is shortened, and finally, sudden accidents are caused. It is estimated that the direct economic loss caused by each occurrence of the accidents exceeds 60 ten thousand yuan, and the social negative effect is difficult to estimate. The explosion injury incident of the switch cabinets in Guangzhou city in 2012 causes great economic loss and serious social impact. The overheating of the switch cabinet is a problem which needs to be solved urgently in the power transmission and transformation industry.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a natural heat dissipation system of a high-current switch cabinet based on a heat pipe technology. The invention aims to solve the problems of long-term low-temperature operation and reduction of load heat of a moving contact spring under the condition of no fan forced air cooling of the switch cabinet.
The technical scheme adopted by the invention for realizing the purpose is as follows:
a natural heat dissipation system of a large-current switch cabinet based on a heat pipe technology comprises a switch cabinet body, wherein a bus chamber, a breaker chamber, a cable chamber and an instrument chamber are arranged in the switch cabinet body, and a plurality of groups of temperature sensors, a plurality of groups of humidity sensors and a plurality of groups of smoke sensors are also arranged in the switch cabinet body; heat absorption components are respectively arranged on the rear side plates of the bus chamber, the breaker chamber and the cable chamber, and contact boxes are respectively connected to the front side plates of the bus chamber and the cable chamber; one end of the group of contact boxes is connected with a vacuum circuit breaker in the circuit breaker chamber, the other end of each contact box is connected with a branch busbar, and the other end of each branch busbar is connected with a main busbar on the bus chamber; the other group of contact boxes is connected with the input end of a current transformer, and the output end of the current transformer is respectively connected with a grounding switch, a voltage transformer, a lightning arrester and a cable joint end through a busbar; a second radiator is arranged on one side of the top of the switch cabinet body, a second heat pipe is connected to the bottom of the second radiator, and the heat absorption end of the second heat pipe penetrates through the top of the switch cabinet body and extends into the instrument room.
Further, the heat absorbing assembly comprises a substrate and a first heat pipe arranged on the substrate.
Furthermore, the inlet end of the contact box corresponds to the position of a moving contact connected with one end of a conducting rod of a vacuum circuit breaker in the breaker chamber; two groups of third heat pipes are embedded in the outer wall of the contact box, one ends of the two groups of third heat pipes extend into the contact box, and the other ends of the two groups of third heat pipes are wound on the outer wall of the contact box; the outer wall of the contact box is provided with an arc-shaped groove, the upper part of the arc-shaped groove is tightly attached to the outer surface of the third heat pipe, a heat dissipation frame is arranged, two ends of the heat dissipation frame are fixedly connected to two sides of the arc-shaped groove, and the top of the heat dissipation frame is provided with a heat dissipation sheet;
a fixed plate is longitudinally arranged on the inner side wall of the contact box in a matched manner, a static contact transversely penetrates through the center of the fixed plate, and the static contact is fixed in the contact box through the fixed plate; one end of the static contact is fixedly connected with the corresponding branch busbar, and the other end of the static contact is clamped with the moving contact on the vacuum circuit breaker; the other end of the branch busbar extends out of a corresponding main busbar in the busbar chamber through a wire outlet on the contact box and is connected with the main busbar.
The shell body of the contact box can be made of epoxy resin, and the heat dissipation frame is made of insulating heat-conducting fins with high heat-conducting performance.
Furthermore, the multiple groups of temperature sensors are passive wireless temperature sensors, and the multiple groups of temperature sensors are respectively arranged on the inner side plate and the high-voltage contact point of the switch cabinet.
Furthermore, the moving contact is a cylindrical body, a plurality of ribs are longitudinally arranged in the moving contact, two ends of each rib are in an arc shape bent outwards, a plurality of groups of springs are equidistantly distributed on the outer wall of each rib, and spring seats are arranged at two ends of each spring; one end of the spring is fixedly connected with the rib through a spring seat, and the other end of the spring is fixedly connected with the insulating layer through the spring seat; the periphery of the insulating layer is glued with a metal shell, and the insulating layer is made of epoxy resin or rubber.
Further, the periphery of conducting rod is provided with a plurality of arc draw-in grooves at the interval such as, and the inside wall of rib is provided with the arc fixture block that matches with the arc draw-in groove, and the moving contact passes through a plurality of arc fixture blocks and the fixed joint of the arc draw-in groove that corresponds in the periphery of conducting rod.
Furthermore, a main bus bar is arranged on a side plate of the bus chamber, the main bus bar is divided into A, B, C three phases, a wall bushing is arranged between the periphery of the main bus bar and the switch cabinet body, a A, B, C three-phase main bus bar is respectively connected with one end of a corresponding branch bus bar, and the other ends of the three groups of branch bus bars are respectively connected with static contacts inside three contact boxes transversely arranged on a front side plate of the bus chamber; the branch busbar penetrates into the contact box through the wire outlet and is connected to one end of the static contact.
Furthermore, one end of a first heat pipe on the heat absorption assembly in the breaker chamber penetrates through the rear side plate to extend into the bus chamber, and is connected with a third radiator on the front side plate of the bus chamber; one end of a first heat pipe on the heat absorption assembly in the bus chamber penetrates through the rear side plate to extend into the cable chamber, and penetrates through the top of the cable chamber to be connected with a first radiator; one end of a first heat pipe on the heat absorption assembly in the cable chamber penetrates through the top of the cable chamber and is connected with a first radiator; the first radiator is arranged at the top of the switch cabinet body.
Furthermore, the first heat pipe, the second heat pipe and the third heat pipe are hollow metal pipes, and condensing agents are arranged in the hollow metal pipes; the surfaces of the substrate, the first heat pipe, the second heat pipe, the third radiator and the radiating frame are coated with heat-conducting insulating paint.
Further, be equipped with relay, binding post and communication module in the instrument room, wireless communication module is connected with the controller, and the top of instrument room is equipped with the antenna and perforates.
Compared with the prior art, the invention has the beneficial effects that:
the heat pipe technology is adopted, heat in the switch cabinet is absorbed through the phase change heat transfer principle, heat dissipation is carried out through the radiator, long-term low-temperature operation can be carried out under the condition that the switch cabinet is free of fan forced air cooling, and natural cooling of the switch cabinet is achieved.
According to the invention, the contact box is improved, the heat pipes are respectively embedded in the movable contact area and the fixed contact area, and the heat pipe with the heat dissipation frame sleeved at the other end is fixedly wound on the outer wall of the contact box, so that the internal temperature of the contact box can be quickly dissipated, and the damage caused by overhigh temperature in the contact box is avoided;
according to the invention, the structure of the moving contact is improved, so that a large current is prevented from passing through the peripheral spring of the moving contact, the heat load of the spring of the moving contact is reduced, and the service life of the spring is prolonged;
according to the invention, the temperature sensor, the humidity sensor, the smoke sensor and the wireless communication module are distributed in the switch cabinet, so that the on-line detection of the temperature rise of the switch cabinet is realized, the remote monitoring and the automatic recording are carried out, and the intelligent level of the heat dissipation system is improved.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of the internal structure of the switchgear of the present invention;
FIG. 2 is a schematic view of a heat sink assembly according to the present invention;
FIG. 3 is a schematic diagram of the heat pipe technology of the present invention;
FIG. 4 is a schematic cross-sectional view of a contact box of the present invention;
FIG. 5 is a schematic view of a heat dissipation frame on a contact box according to the present invention;
FIG. 6 is a schematic structural diagram of a moving contact section according to the present invention;
FIG. 7 is a schematic side sectional view of the movable contact according to the present invention;
fig. 8 is a schematic block diagram of the on-line monitoring of the switch cabinet of the present invention.
In the figure:
the switch cabinet comprises a switch cabinet body 1, a bus chamber 2, a breaker chamber 3, an instrument chamber 4, a cable chamber 5, a contact box 6, a penetrating hole 61, an arc-shaped groove 62, a fixing plate 63, an outlet 64, an inlet end 65, a vacuum breaker 7, a branch busbar 8, a current transformer 9, a grounding switch 10, a heat absorption assembly 11, a first heat pipe 12, a first radiator 13, a second radiator 14, a second heat pipe 15, a third radiator 16, a third heat pipe 17, a heat dissipation frame 18, a heat dissipation fin 181, a fixed contact 19, a movable contact 20, a metal layer 2001, an insulating layer 2002, a spring seat 2003, a spring 2004, a rib 2005, an arc-shaped fixture block 2006, a conductive rod 21, an arc-shaped clamping groove 211, a heating body 22 and.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The solution of some embodiments of the invention is described below with reference to fig. 1-8.
Example 1
The invention provides a technical scheme, and relates to a natural heat dissipation system of a high-current switch cabinet based on a heat pipe technology, which is shown in figure 1, wherein figure 1 is a schematic diagram of the internal structure of the switch cabinet.
The invention comprises a switch cabinet body 1, wherein the switch cabinet body 1 comprises a bus chamber 2, a breaker chamber 3, a cable chamber 5 and an instrument chamber 4, and a plurality of groups of temperature sensors, a plurality of groups of humidity sensors and a plurality of groups of smoke sensors are also arranged in the switch cabinet body 1; heat absorption assemblies 11 are respectively arranged on the rear side plates of the bus chamber 2, the breaker chamber 3 and the cable chamber 5, and two groups of contact boxes 6 are also connected to the front side plates of the bus chamber 2 and the cable chamber 5; one end of a contact box 6 on the bus chamber 2 is connected with a vacuum circuit breaker 7 inside the circuit breaker chamber 3, the other end of the contact box 6 is connected with a branch bus bar 8, and the other end of the branch bus bar 8 is connected with a main bus bar on the bus chamber 2; one end of a bus bar of a wire outlet 64 of the contact box 6 on the other group of cable chambers 5 is respectively connected with an input end contact of a current transformer 9, and an output end contact of the current transformer 9 is respectively connected with a grounding switch 10, a voltage transformer, a lightning arrester and a cable joint end through the bus bar; a second radiator 14 is arranged on one side of the top of the switch cabinet body 1, a second heat pipe 15 is connected to the bottom of the second radiator 14, and a heat absorption end of the second heat pipe 15 penetrates through the top of the switch cabinet body 1 and extends into the instrument room 4.
The heat pipes installed on the heat absorbing assembly 11 of the present invention are the same, and the difference is that the heat absorbing areas of the heat pipes arranged in different areas are different.
Example 2
The invention also provides a technical scheme, and relates to a natural heat dissipation system of a high-current switch cabinet based on a heat pipe technology, which comprises a switch cabinet body 1, and a plurality of groups of temperature sensors, a plurality of groups of humidity sensors and a plurality of groups of smoke sensors which are arranged in the switch cabinet body 1, wherein a plurality of groups of heat absorption assemblies 11 are arranged in the switch cabinet body 1, the heat absorption assemblies 11 are respectively and fixedly connected to rear side plates of a switch cabinet bus chamber 2, a circuit breaker chamber 3 and a cable chamber 5 through screws, each heat absorption assembly 11 comprises a substrate and first heat pipes 12 which are arranged on the substrate, as shown in fig. 2, and fig. 2 is a structural schematic diagram of the heat absorption assembly.
In fig. 1, a second heat sink 14 is arranged on the right side of the top of the switch cabinet body 1, the bottom of the second heat sink 14 is connected with a plurality of second heat pipes 15 in a clamping manner, and a heat absorption end of each second heat pipe 15 penetrates through the top of the switch cabinet body 1 and extends into the instrument room 4.
In fig. 1, two groups of contact boxes 6 are further arranged inside the switch cabinet body 1, the two groups of contact boxes 6 are respectively fixedly connected to the front side plates of the bus chamber 2 and the cable chamber 5 through screws, and the inlet end 65 of the contact box 6 corresponds to the position of the movable contact 20 connected to one end of the conductive rod 21 of the vacuum circuit breaker 7 inside the breaker chamber 3;
as shown in fig. 4 and 5, fig. 4 is a schematic cross-sectional view of a contact box of the present invention, and fig. 5 is a schematic structural view of a heat dissipation frame on the contact box of the present invention. Two groups of third heat pipes 17 are embedded in the outer wall of the contact box 6, one ends of the two groups of third heat pipes 17 extend into the contact box 6, and the other ends of the two groups of third heat pipes are wound on the outer wall of the contact box 6; the outer wall of the contact box 6 is close to the position of the third heat pipe 17 and is provided with an arc-shaped groove 62, the top of the arc-shaped groove 62, and the outer surface of the third heat pipe 17 which is tightly attached is provided with a heat dissipation frame 18, the two ends of the heat dissipation frame 18 are fixedly connected with the two sides of the arc-shaped groove 62, the top of the heat dissipation frame 18 is provided with a heat dissipation fin 181 through fixed connection with a screw, the heat dissipation frame 18 is made of insulating heat conducting fins with strong heat conducting performance, the cooling end through the heat pipe is tightly fitted, the heat inside the contact box 6 can be quickly discharged, and the damage to the contact box 6 caused. The shell body of the contact box 6 can be made of epoxy resin.
As shown in fig. 6 and 7, fig. 6 is a schematic sectional structure view of the movable contact according to the present invention, and fig. 7 is a schematic sectional side view of the movable contact according to the present invention. The moving contact 20 is a cylindrical body, a plurality of ribs 2005 are longitudinally arranged in the moving contact, two ends of each rib 2005 are arc-shaped and bent outwards, a plurality of groups of springs 2004 are equidistantly distributed on the outer wall of each rib 2005, spring seats 2003 are welded to two ends of each spring 2004, one ends of the springs 2004 are welded to the ribs 2005 through the spring seats 2003, and the other ends of the springs 2004 are fixedly connected with the insulating layers 2002 through the spring seats 2003 in an adhesive mode. A metal shell 2001 is glued on the periphery of the insulating layer 2002, and the insulating layer 2002 can be made of epoxy resin or rubber.
The purpose that this place set up insulating layer 2002 is in order to make the spring branch road form the short circuit, when sound contact joint, the spring has played tensile fixed joint effect promptly, avoid heavy current to rise through causing the spring heat again, because the spring easily softens under high temperature, contact pressure descends, temperature rises, big fire, finally lead to the contact box to burn out, alternate short circuit, the cubical switchboard explosion, and prior art's moving contact is because the spring twines at the lateral wall both ends of moving contact, it is fixed to carry out the joint to sound contact, but the unable passage of avoiding heavy current, the load heat of spring has been increased, long-term use can reduce the life-span of spring.
As shown in fig. 6, a plurality of arc-shaped clamping grooves 211 are arranged at equal intervals on the periphery of the conducting rod 21, arc-shaped clamping blocks 2006 matched with the arc-shaped clamping grooves 211 are arranged on the inner side wall of the rib 2005, and the movable contact 20 is fixedly clamped on the periphery of the conducting rod 21 through the arc-shaped clamping blocks 2006 and the corresponding arc-shaped clamping grooves 211.
As shown in fig. 4, a fixing plate 63 is longitudinally arranged on the inner side wall of the contact box 6, a static contact 19 transversely penetrates through the center of the fixing plate 63, and the static contact 19 is fixed inside the contact box 6 through the fixing plate 63; one end of a static contact 19 is fixedly connected with the corresponding branch busbar 8, and the other end of the static contact 19 is clamped with a moving contact 20 on the vacuum circuit breaker 7; the other end of the branch busbar 8 extends out of a corresponding main busbar in the bus chamber 2 through a wire outlet 64 on the contact box 6 and is connected with the main busbar; the main busbar is divided into A, B, C three phases which are respectively arranged on the side plates of the busbar chamber 2, a wall bushing is arranged between the periphery of the main busbar and the switch cabinet body 1, the A, B, C three-phase main busbar is respectively connected with one end of a corresponding branch busbar 8, the other ends of the three groups of branch busbars are respectively connected with static contacts 19 inside three contact boxes 6 transversely arranged on the front side plate of the busbar chamber 2, and the branch busbar 8 penetrates into the contact boxes 6 through a wire outlet 64 and is fixed at one end of the static contacts 19 through screws.
As shown in fig. 3, fig. 3 is a schematic view of the heat pipe technology of the present invention, wherein: q = KA Δ T, Q is heat transfer quantity of the heat source; a is the heat dissipation area; t1 and t2 are the heat source temperature and the ambient temperature respectively; Δ T = T2-T1; k is a heat exchange coefficient, and the size of K is in direct proportion to the air flow rate; v is the air flow rate. The heat pipe principle in fig. 3 is prior art and will not be described in detail here.
The heat absorbing component 11 in the switch cabinet adopts a heat pipe technology, heat is transmitted out through high-temperature phase change, and due to the fact that the heat transmission driving force is temperature difference, the heat can be continuously transmitted out as long as the temperature difference exists, and any auxiliary power is not needed. The heat pipe 23 is a heat superconductor, a hollow metal pipe body is selected, a condensing agent is arranged in the heat pipe, and a heating end is close to a heat source, namely the heating body 22, so that heat around the heating body 22 can be quickly absorbed, and the aim of quickly cooling is fulfilled. The heat pipe technology has achieved remarkable achievements in other fields, but at present, manufacturers of power switch cabinets mainly adopt a traditional fan refrigeration mode in the aspect of heat dissipation, and therefore the heat pipe technology is necessary to be applied to large-current switch cabinets in the power industry.
The high-current switch cabinet can realize natural air cooling by utilizing the heat pipe for heat dissipation in the scheme, so that the safety performance of the switch cabinet is greatly improved, the safety accident rate in the operation and maintenance of the transformer substation is reduced, the casualties and property loss of personnel are avoided, the improvement of the safety management level of the transformer substation is facilitated, and the high-current switch cabinet has important theoretical significance and practical application value.
As shown in fig. 1, one end of the first heat pipe 12 on the heat absorbing component 11 in the breaker chamber 3 penetrates through the rear side plate and extends to the inside of the bus bar chamber 2, and is connected to the third radiator 16 on the front side plate of the bus bar chamber 2, one end of the first heat pipe 12 on the heat absorbing component 11 in the bus bar chamber 2 penetrates through the rear side plate and extends to the inside of the cable chamber 5, and penetrates through the left top of the cable chamber 5 and is connected to the first radiator 13, one end of the first heat pipe 12 on the heat absorbing component 11 in the cable chamber 5 penetrates through the left top of the cable chamber 5 and is connected to the first radiator 13, and the first radiator 13 is disposed on the top of the switch cabinet body 1.
As shown in fig. 1-4, the first heat pipe 12, the second heat pipe 15, and the third heat pipe 17 are all hollow metal pipes, and a condensing agent is disposed inside the hollow metal pipes.
The surfaces of the substrate, the first heat pipe 12, the second heat pipe 15, the third heat pipe 17, the third heat radiator 16 and the heat dissipation frame 18 are coated with heat-conducting insulating paint, which is the conventional technology and is not described herein.
As shown in fig. 8, the controller is installed in instrument room 4, mainly install the relay in this instrument room 4, devices such as binding post, 4 tops in instrument room are equipped with the antenna and perforate, set up wireless communication module in the instrument room, be convenient for and the controller is connected, the two of wireless communication module and controller is through wired connection, multiunit humidity transducer and multiunit smoke transducer set up respectively at cubical switchboard body 1's generating line room 2, circuit breaker room 3, on instrument room 4 and cable chamber 5's roof or curb plate, be convenient for monitor the inside humidity of cubical switchboard and smog. The utility model discloses a switch cabinet, including switch cabinet, temperature sensor, battery, multiunit temperature sensor, passive wireless temperature sensor is chooseed for use to multiunit temperature sensor, set up respectively on the interior curb plate and the high-pressure contact point of cubical switchboard, this temperature sensor, and data wireless transmission between the collector, simple to operate is nimble, do not receive equipment structure and space influence, and need not to use the battery moreover, be convenient for maintain, multiunit temperature sensor in the scheme, multiunit humidity transducer, multiunit smoke transducer, collector and wireless communication module are existing mature technique, do not do here and describe repeatedly more. The mobile terminal selects a mobile phone, so that maintenance personnel can conveniently and timely acquire the monitored operation condition of the switch cabinet.
In the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "connected" and "fixed" are to be construed broadly, e.g., "connected" may be a fixed connection, a removable connection, or an integral connection. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the indicated devices or units must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Large current switch cabinet natural cooling system based on heat pipe technology, including cubical switchboard body (1), its characterized in that: a bus chamber (2), a circuit breaker chamber (3), a cable chamber (5) and an instrument chamber (4) are arranged in the switch cabinet body (1), and a plurality of groups of temperature sensors, a plurality of groups of humidity sensors and a plurality of groups of smoke sensors are also arranged in the switch cabinet body (1); heat absorption components (11) are respectively arranged on the rear side plates of the bus chamber (2), the breaker chamber (3) and the cable chamber (5), and contact boxes (6) are respectively connected to the front side plates of the bus chamber (2) and the cable chamber (5); one end of a group of contact boxes (6) is connected with a vacuum circuit breaker (7) in the circuit breaker chamber (3), the other end of each contact box (6) is connected with a branch busbar (8), and the other end of each branch busbar (8) is connected with a main busbar on the bus chamber (2); the other group of contact boxes (6) is connected with the input end of a current transformer (9), and the output end of the current transformer (9) is respectively connected with a grounding switch (10), a voltage transformer, a lightning arrester and a cable joint end through a busbar; a second radiator (14) is arranged on one side of the top of the switch cabinet body (1), a second heat pipe (15) is connected to the bottom of the second radiator (14), and a heat absorption end of the second heat pipe (15) penetrates through the top of the switch cabinet body (1) and extends into the instrument room (4).
2. A high-current switch cabinet natural heat dissipation system based on heat pipe technology as claimed in claim 1, wherein: the heat absorbing component (11) comprises a substrate and a first heat pipe arranged on the substrate.
3. A high-current switch cabinet natural heat dissipation system based on heat pipe technology as claimed in claim 1, wherein: the inlet end (65) of the contact box (6) corresponds to the position of a moving contact (20) connected with one end of a conductive rod (21) of a vacuum circuit breaker (7) in the breaker chamber (3); two groups of third heat pipes (17) are embedded in the outer wall of the contact box (6), one ends of the two groups of third heat pipes (17) extend into the contact box (6), and the other ends of the two groups of third heat pipes (17) are wound on the outer wall of the contact box (6); an arc-shaped groove (62) is formed in the outer wall of the contact box (6), a heat dissipation frame (18) is arranged above the arc-shaped groove (62) and is tightly attached to the outer surface of the third heat pipe (17), two ends of the heat dissipation frame (18) are fixedly connected to two sides of the arc-shaped groove (62), and heat dissipation fins (181) are arranged at the top of the heat dissipation frame (18); a fixed plate (63) is longitudinally arranged on the inner side wall of the contact box (6), a static contact (19) transversely penetrates through the center of the fixed plate (63), and the static contact (19) is fixed in the contact box (6) through the fixed plate (63); one end of a static contact (19) is fixedly connected with the corresponding branch busbar (8), and the other end of the static contact (19) is clamped with a moving contact (20) on the vacuum circuit breaker (7); the other end of the branch busbar (8) extends out of a wire outlet (64) on the contact box (6) and is connected with a corresponding main busbar in the busbar chamber (2); the shell body of the contact box (6) can be made of epoxy resin, and the heat dissipation frame (18) is made of insulating heat-conducting fins with high heat-conducting performance.
4. A high-current switch cabinet natural heat dissipation system based on heat pipe technology as claimed in claim 1, wherein: the multiple groups of temperature sensors are passive wireless temperature sensors and are respectively arranged on the inner side plate and the high-voltage contact point of the switch cabinet.
5. A high-current switch cabinet natural heat dissipation system based on heat pipe technology as claimed in claim 3, wherein: the moving contact (20) is a cylindrical body, a plurality of ribs (2005) are longitudinally arranged in the moving contact, two ends of each rib (2005) are arc-shaped and bent outwards, a plurality of groups of springs (2004) are equidistantly distributed on the outer wall of each rib (2005), and spring seats (2003) are arranged at two ends of each spring (2004); one end of the spring (2004) is fixedly connected with the rib (2005) through the spring seat (2003), and the other end of the spring (2004) is fixedly connected with the insulating layer (2002) through the spring seat (2003); a metal shell (2001) is adhered to the periphery of the insulating layer (2002), and the insulating layer (2002) is made of epoxy resin or rubber.
6. A high-current switch cabinet natural heat dissipation system based on heat pipe technology as claimed in claim 1, wherein: the periphery of conducting rod (21) is provided with a plurality of arc draw-in grooves (211) at equal intervals, the inside wall of rib (2005) is provided with arc fixture block (2006) that matches with arc draw-in groove (211), moving contact (20) through a plurality of arc fixture block (2006) with arc draw-in groove (211) fixed joint in the periphery of conducting rod (21) that corresponds.
7. A high-current switch cabinet natural heat dissipation system based on heat pipe technology as claimed in claim 1, wherein: a main bus bar is arranged on a side plate of the bus chamber (2), the main bus bar is divided into A, B, C three phases, a wall bushing is arranged between the periphery of the main bus bar and the switch cabinet body (1), A, B, C three-phase main bus bars are respectively connected with one end of a corresponding branch bus bar (8), and the other ends of the three groups of branch bus bars are respectively connected with static contacts (19) inside three contact boxes (6) transversely arranged on the front side plate of the bus chamber (2); the branch busbar (8) penetrates into the contact box (6) through the wire outlet (64) and is connected to one end of the static contact (19).
8. A high-current switch cabinet natural heat dissipation system based on heat pipe technology as claimed in claim 1, wherein: one end of a first heat pipe (12) on a heat absorption assembly (11) in the circuit breaker chamber (3) penetrates through the rear side plate, extends to the interior of the bus chamber (2), and is connected with a third radiator (16) on the front side plate of the bus chamber (2); one end of a first heat pipe (12) on a heat absorption assembly (11) in the bus chamber (2) penetrates through the rear side plate and extends to the interior of the cable chamber (5), and penetrates through the top of the cable chamber (5) and is connected with a first radiator (13); one end of a first heat pipe (12) on a heat absorption component (11) in the cable chamber (5) penetrates through the top of the cable chamber (5) and is connected with a first radiator (13); the first radiator (13) is arranged at the top of the switch cabinet body (1).
9. A high-current switch cabinet natural heat dissipation system based on heat pipe technology as claimed in claim 1, wherein: the first heat pipe (12), the second heat pipe (15) and the third heat pipe (17) are hollow metal pipes, and condensing agents are arranged in the hollow metal pipes; the surfaces of the substrate, the first heat pipe (12), the second heat pipe (15), the third heat pipe (17), the third radiator (16) and the radiating frame (18) are coated with heat-conducting insulating paint.
10. A high-current switch cabinet natural heat dissipation system based on heat pipe technology as claimed in claim 1, wherein: be equipped with relay, binding post and communication module in instrument room (4), wireless communication module is connected with the controller, and the top of instrument room (4) is equipped with the antenna and perforates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011520930.1A CN112652985A (en) | 2020-12-21 | 2020-12-21 | Natural heat dissipation system of large-current switch cabinet based on heat pipe technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011520930.1A CN112652985A (en) | 2020-12-21 | 2020-12-21 | Natural heat dissipation system of large-current switch cabinet based on heat pipe technology |
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| CN112652985A true CN112652985A (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011520930.1A Pending CN112652985A (en) | 2020-12-21 | 2020-12-21 | Natural heat dissipation system of large-current switch cabinet based on heat pipe technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114362004A (en) * | 2021-12-13 | 2022-04-15 | 江苏南瑞泰事达电气有限公司 | Gas insulation switch cabinet convenient to heat dissipation |
| CN114465109A (en) * | 2022-02-18 | 2022-05-10 | 杨道华 | Intelligent switch cabinet based on autonomous detection and control method thereof |
| CN115753880A (en) * | 2022-11-22 | 2023-03-07 | 西南交通大学 | Oil-immersed vehicle-mounted traction transformer heat dissipation performance evaluation method based on comprehensive temperature rise factors |
-
2020
- 2020-12-21 CN CN202011520930.1A patent/CN112652985A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114362004A (en) * | 2021-12-13 | 2022-04-15 | 江苏南瑞泰事达电气有限公司 | Gas insulation switch cabinet convenient to heat dissipation |
| CN114465109A (en) * | 2022-02-18 | 2022-05-10 | 杨道华 | Intelligent switch cabinet based on autonomous detection and control method thereof |
| CN115753880A (en) * | 2022-11-22 | 2023-03-07 | 西南交通大学 | Oil-immersed vehicle-mounted traction transformer heat dissipation performance evaluation method based on comprehensive temperature rise factors |
| CN115753880B (en) * | 2022-11-22 | 2024-03-19 | 西南交通大学 | Evaluation method for heat dissipation performance of oil-immersed vehicle-mounted traction transformer based on comprehensive temperature rise factors |
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