CN117712896A - Environment-friendly gas-insulated combined electrical apparatus looped netowrk cabinet - Google Patents
Environment-friendly gas-insulated combined electrical apparatus looped netowrk cabinet Download PDFInfo
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- CN117712896A CN117712896A CN202410149253.9A CN202410149253A CN117712896A CN 117712896 A CN117712896 A CN 117712896A CN 202410149253 A CN202410149253 A CN 202410149253A CN 117712896 A CN117712896 A CN 117712896A
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- Prior art keywords
- pipe
- water inlet
- inlet pipe
- cold water
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 188
- 238000010521 absorption reaction Methods 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 230000001105 regulatory effect Effects 0.000 claims abstract description 16
- 239000000498 cooling water Substances 0.000 claims abstract description 13
- 235000014676 Phragmites communis Nutrition 0.000 claims description 18
- 238000011144 upstream manufacturing Methods 0.000 claims description 10
- 230000007613 environmental effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000003302 ferromagnetic material Substances 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 36
- 230000000694 effects Effects 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 239000011358 absorbing material Substances 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- 230000005291 magnetic effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
Abstract
The application relates to an environment-friendly gas-insulated switchgear ring main unit, which comprises a cabinet body and a gas tank, wherein a heat absorption pipe is arranged in the gas tank and is connected with a water inlet pipe and a water outlet pipe, and quick connectors are arranged at two ends of the water inlet pipe; the side wall of one end of the water inlet pipe is connected with a cold water pipe, a cooling water circulation system is arranged between the cold water pipe and the water outlet pipe, a group of cooling water circulation systems corresponds to a plurality of cold water pipes, and the connecting parts of the cold water pipe and the water inlet pipe are provided with regulating valves; the air box is connected with an expansion pipe, a piston is arranged in the expansion pipe in a sliding manner, and a control rod is fixedly connected to the piston; the water inlet pipe is provided with a control mechanism, and the control mechanism is configured to control the regulating valve in the other cabinet body to guide cold water in the cold water pipe in the cabinet body to the near end of the water inlet pipe in the cabinet body when the control rod moves in the direction deviating from the regulating valve. This application can be when a certain gas tank is overheated with another cabinet body cold water automatic leading-in order to strengthen the heat dissipation, effectively avoided the too big, the possibility that exists the leakage risk of atmospheric pressure that the gas tank overheated leads to.
Description
Technical Field
The application relates to the technical field of power equipment, in particular to an environment-friendly gas-insulated switchgear ring main unit.
Background
The ring main unit is generally divided into an air insulation type and an SF6 insulation type, is used for switching load current, switching off and switching on short-circuit current and transformer no-load current, has control and protection effects on charging current of an overhead line and a cable line at a certain distance, and is important switching equipment for ring network power supply and terminal power supply. The environment-friendly gas insulation ring main unit is environment-friendly, does not generate dangerous substances such as perfluorinated compounds and the like, can effectively reduce global greenhouse gas emission, and is environment-friendly high-voltage switch equipment widely popularized and used in the world at present.
The Chinese patent with the publication number of CN113644581A provides an environment-friendly gas-insulated switchgear ring main unit, which comprises a gas tank, five-station switches, a fuse assembly, an auxiliary grounding switch, an extension sleeve, an auxiliary grounding switch pull rod and an internal conductor are arranged in the environment-friendly gas-insulated switchgear ring main unit, an external disconnecting switch operating mechanism and a circuit breaker operating mechanism which are all connected with the five-station switches are respectively arranged outside the gas tank, a fuse tripping assembly connected with the fuse assembly is arranged outside the gas tank, and a mechanical interlocking assembly is arranged between the external disconnecting switch operating mechanism and the circuit breaker operating mechanism. This environmental protection gas-insulated switchgear looped netowrk cabinet is through the load switching device that gas tank and external isolator operating device constitute to the fuse device of collocation environmental protection material preparation, the product carries out the quick protection after the load breaks down or overflows, thereby avoids damaging equipment.
The related art in the above has the following drawbacks: the looped netowrk cabinet can produce a large amount of heat at the in-process of electric power transmission, especially the electric arc that produces when closing a floodgate with opening a floodgate can make the environmental protection gas in the gas tank overheat fast, and the environmental protection gas expansion after the superheating can exert the pressure that increases to the gas tank, and then influences the life of gas tank, and this makes the sealing performance requirement to the gas tank higher, in case the gas tank takes place to leak, will lead to insulating properties to reduce even inefficacy in the gas tank, exists certain potential safety hazard.
Disclosure of Invention
In order to solve the problem that heat accumulation in the ring main unit can increase the internal pressure of the gas tank so that the risk of leakage of the gas tank exists, the application provides an environment-friendly gas-insulated combined electrical appliance ring main unit.
The application provides an environmental protection gas-insulated switchgear looped netowrk cabinet adopts following technical scheme:
the ring main unit of the environment-friendly gas-insulated combined electrical appliance comprises a cabinet body and a gas tank, wherein a heat absorption pipe is arranged in the gas tank, one end of the heat absorption pipe is connected with a water inlet pipe positioned outside the gas tank, the other end of the heat absorption pipe is connected with a water outlet pipe, the water inlet pipe is arranged along the width direction of the cabinet body, and two ends of the water inlet pipe are respectively provided with a quick connector in butt joint with the end part of the water inlet pipe in the other cabinet body;
the side wall of one end of the water inlet pipe is connected with a cold water pipe, a cooling water circulation system is arranged between the cold water pipe and the water outlet pipe, one group of cooling water circulation systems corresponds to a plurality of cold water pipes, and the cold water pipe and the water inlet pipe connecting part are provided with regulating valves for guiding cold water to the near end or the far end of the water inlet pipe;
the air box is also connected with an expansion pipe parallel to the water inlet pipe, a piston is arranged in the expansion pipe in a sliding manner, and a control rod parallel to the water inlet pipe is fixedly connected to the piston;
the water inlet pipe is provided with a control mechanism, and the control mechanism is configured to control the regulating valve in the other cabinet body to guide cold water in the cold water pipe in the cabinet body to the near end of the water inlet pipe in the cabinet body when the control rod moves in the direction away from the regulating valve.
Further, the regulating valve comprises a three-way valve connected between the cold water pipe and the water inlet pipe, the cross section of the middle part of the three-way valve is rectangular, a valve plate is rotationally connected with the three-way valve, one of two coaxial outlet ends of the three-way valve is connected with the quick connector, the other end of the coaxial outlet end of the three-way valve is connected with the water inlet pipe, and the middle part of the valve plate is fixedly connected with a rotating shaft rotationally arranged on the three-way valve; the three-way valve is provided with a reset piece for driving the rotating shaft to reset to the side of the valve plate, which is opposite to the water surface, and is directed to the water inlet pipe;
when the upstream surface side of the valve plate is turned to point to the water inlet pipe, the cold water pipe is communicated with the water inlet pipe; when one side of the valve plate, which faces the water surface, points to the quick connector, the cold water pipe is communicated with the quick connector.
Further, the control mechanism comprises a sliding block which is arranged at one end of the water inlet pipe far away from the three-way valve in a sliding way, a unidirectional circulation structure which only allows liquid to circulate from one end of the water inlet pipe connected with the quick connector to one end of the water inlet pipe connected with the three-way valve is arranged in the sliding block, a reed which extends out of the end part of the adjacent quick connector is connected to the sliding block, and a hook part which is inserted into the free end of the reed is fixedly connected to the bottom of the back water side of the valve plate;
the control mechanism further includes a control assembly configured to urge the slider to move in a direction away from the regulator valve when the control lever moves in a direction away from the regulator valve.
Further, the control assembly comprises a first magnet fixedly connected to the sliding block and a second magnet fixedly connected to the free end of the control rod, the first magnet and the second magnet are attracted magnetically, and the water inlet pipe is made of non-ferromagnetic materials.
Still further, the unidirectional flow structure includes penetrating the perforation of seting up in slider axial direction, the clearance slides in the perforation and wears to be equipped with the slide bar, the slide bar is close to the one end rigid coupling of three-way valve has be used for the shade the perforation baffle, the other end rigid coupling has the external diameter to be greater than the support of perforation aperture.
Still further, the perforation is set up to flaring form, just the binding off end of perforation is close to the three-way valve sets up, the support is arranged in the perforation and external diameter is greater than perforation binding off end aperture.
Further, the heat absorbing pipe is coiled in a serpentine shape in the air box.
Still further, be provided with the box that absorbs moisture in the cabinet body, it has the hygroscopic material layer to fill in the box that absorbs moisture, the expansion pipe runs through the hygroscopic material layer sets up.
In summary, the beneficial technical effects of the application are:
1. after the water inlet pipes on the ring main units which are adjacently arranged are sequentially communicated, cold water circulates in the heat absorption pipe to cool the environment-friendly gas in the gas tank, so that the temperature in the gas tank is not too high and is maintained at proper air pressure; when the air box in one cabinet body is overheated, the air in the air box is expanded and the air pressure is increased, so that the piston moves in the expansion pipe, the control rod is driven to move, and the cold water in the cold water pipe in the cabinet body is guided into the water inlet pipe in the cabinet body of the overheated air box by the regulating valve in the adjacent other cabinet body by virtue of the control mechanism, so that the cold water is introduced into the two ends of the water inlet pipe, the heat exchange efficiency of the heat absorption pipe in the overheated air box can be obviously improved, the temperature in the air box can be quickly reduced, the air pressure in the air box can be maintained in a safer state as much as possible, the possibility of overlarge air pressure and leakage risk caused by long-time overheating of the air box is effectively avoided, and the ring main unit of the ring main unit can be ensured to stably run for a long time;
2. when the control rod drives the sliding block to move, the free end of the reed on the sliding block is firstly embedded into the hook part on the valve block, and along with the continued movement of the sliding block, the reed pushes the valve block to overturn around the axis of the rotating shaft until the valve block overturns until the upstream surface of the valve block points to the sliding block, at the moment, the cold water pipe in the cabinet body is communicated with the water inlet pipe corresponding to the overheated air box, so that cold water can be introduced into both ends of the water inlet pipe, and the flexible borrowing and adjustment cold water effect of a plurality of spliced ring main units is realized;
3. the overheat temperature in the overheat gas box is different, the expansion degree of the environment-friendly gas is different, so that the displacement of the movement of the control rod is also different, and the corresponding overturning angle of the valve is also different, so that the quantity of cold water flowing into the corresponding water inlet pipe of the overheat gas box from the cold water pipe of the other cabinet body is also different, the quantity of the borrowed cold water can be adjusted in a self-adaptive manner with the overheat degree, and the heat dissipation and the cooling of the gas box of the other cabinet body are not greatly disturbed; and once the temperature in the superheated air box is reduced, the air pressure in the expansion pipe is reduced, the torsion deformation force of the reset piece and the deformation force of the reed can drive the sliding block to move back, and the valve plate can also be turned over to reset to an initial state, so that the respective heat dissipation and cooling effects of each cabinet body are ensured.
Drawings
FIG. 1 is a cross-sectional view of the overall structure of an embodiment of the present application;
FIG. 2 is an enlarged schematic view of a portion A of FIG. 1;
fig. 3 is a schematic structural diagram of the valve plate according to the embodiment of the present application after being turned over under the pushing of the reed;
fig. 4 is a partially enlarged schematic view of the portion B in fig. 1.
Reference numerals illustrate:
1. a cabinet body; 11. an air box;
21. a heat absorbing pipe; 22. a water inlet pipe; 23. a water outlet pipe;
3. a quick connector;
4. a cold water pipe;
51. an expansion tube; 52. a piston; 53. a control lever; 54. a second magnet;
61. a three-way valve; 62. a valve plate; 621. a hook portion; 63. a rotating shaft;
7. a slide block; 71. a reed; 72. a first magnet; 73. perforating; 74. a slide bar; 75. a baffle; 76. a bracket;
8. a moisture absorption box; 81. a layer of hygroscopic material.
Detailed Description
The following description of the embodiments of the present application will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The embodiment of the application discloses an environment-friendly gas-insulated switchgear ring main unit. Referring to fig. 1 and 2, an environment-friendly gas-insulated switchgear ring main unit includes a main unit body 1 and a gas tank 11, wherein a heat absorbing pipe 21 is arranged in the gas tank 11, the heat absorbing pipe 21 is specifically a copper pipe or an aluminum alloy pipe, and the heat absorbing pipe 21 is coiled in the gas tank 11 in a serpentine shape. One end of the heat absorption tube 21 is connected with a water inlet tube 22 positioned outside the air box 11, the other end of the heat absorption tube 21 is connected with a water outlet tube 23, the heat absorption tube 21 is specifically connected to the side wall of the middle part of the water inlet tube 22, the water inlet tube 22 is arranged along the width direction of the cabinet body 1, and two ends of the water inlet tube 22 are respectively provided with a quick connector 3 which is in butt joint with the end part of the water inlet tube 22 in the other cabinet body 1.
The side wall at one end of the water inlet pipe 22 is connected with a cold water pipe 4, a cooling water circulation system is arranged between the cold water pipe 4 and the water outlet pipe 23, the cooling water circulation system is arranged outside the cabinet body 1, one group of cooling water circulation systems corresponds to a plurality of cold water pipes 4, namely, the plurality of cabinet bodies 1 share one group of cooling water circulation systems, and the connection part of the cold water pipe 4 and the water inlet pipe 22 is provided with a regulating valve for guiding cold water to the near end or the far end of the water inlet pipe 22;
the air tank 11 is also connected with an expansion pipe 51 which is parallel to the water inlet pipe 22, the expansion pipe 51 is a hard pipe body, the inner diameter of the expansion pipe is smaller than that of the water inlet pipe 22, a piston 52 is arranged in the expansion pipe 51 in a sliding manner, and a control rod 53 which is parallel to the water inlet pipe 22 is fixedly connected to the piston 52; in addition, the water inlet pipe 22 is provided with a control mechanism configured to control the regulating valve in the other cabinet 1 to guide cold water in the cold water pipe 4 in the cabinet 1 to the proximal end of the water inlet pipe 22 in the cabinet 1 when the control lever 53 is moved in a direction away from the regulating valve. It should be noted that, for convenience of distinction, hereinafter, the cold water pipe 4 in another cabinet 1 or the cold water pipe 4 in the cabinet 1 shall not be mentioned, and the corresponding cold water pipe 4 in the same cabinet 1 shall be indicated, and other components are the same.
After the arrangement, when the ring main units are spliced, after the ring main units are arranged, two water inlet pipes 22 on two adjacent ring main units are connected through the quick connector 3, and cold water in the cold water pipe 4 is guided into the water inlet pipe 22 in the corresponding cabinet body 1 by the regulating valve; therefore, when the ring main units work normally, a large amount of heat is generated in the air tank 11 in the main body 1, the cooling water circulation system respectively conveys the cooled cold water to the water inlet pipes 22 through the cold water pipes 4, part of the heat in the air tank can be taken away by the cold water in the water inlet pipes 22 through the heat absorption pipes 21, and the cold water after heat exchange in the heat absorption pipes 21 flows back to the cooling water circulation system through the water outlet pipes 23 for cooling and outputting, so that the effects of effectively radiating and cooling the ring main units can be realized, and the temperature in the air tank 11 can be kept at a proper air pressure without being too high.
When the air tank 11 in one cabinet body 1 is overheated, cold water flowing in the heat absorption pipe 21 is insufficient to cool down the environment-friendly air in the air tank 11 rapidly, at this time, the air in the air tank 11 expands and the air pressure increases, part of overheated environment-friendly air flows into the expansion pipe 51 and pushes the piston 52 to move in the expansion pipe 51, and then the control rod 53 is driven to move along the extending direction of the water inlet pipe 22, the control rod 53 enables the cold water in the cold water pipe 4 in the adjacent cabinet body 1 to be guided into the water inlet pipe 22 in the cabinet body 1 of the overheat air tank 11 by means of the control mechanism when moving, the cold water in the water inlet pipe 22 is led into both ends, so that the cold water amount in the heat absorption pipe 21 in the overheat air tank 11 increases, and the cold water flow rate in the heat absorption pipe 21 increases under the condition of water supply flow balance of an external cooling water circulation system, therefore, the heat exchange efficiency of the heat absorption pipe 21 in the overheat air tank 11 can be remarkably improved, the temperature in the air tank 11 can be rapidly reduced, the air pressure in the adjacent cabinet body 1 can be kept in a state as far as possible, the safe state in the air tank 11 can be effectively prevented from leaking out, and the air tank can be guaranteed, and the running at a long time can be avoided, and the risk of the running is stable.
When specifically setting up, referring to fig. 2 and 3, the governing valve is including connecting the three-way valve 61 between cold water pipe 4 and inlet tube 22, three-way valve 61 middle part cross section is the rectangle and rotates and be connected with valve block 62, one side of valve block 62 upstream face is established to the indent cambered surface, valve block 62 edge and three-way valve 61 inner wall sliding seal connect, quick-operation joint 3 is connected to one of two exit ends of three-way valve 61 coaxial, inlet tube 22 is connected to the other end, valve block 62 middle part rigid coupling has the pivot 63 of rotation installation on three-way valve 61, pivot 63 is orthogonal setting with inlet tube 22 axial. The three-way valve 61 is provided with a reset piece for driving the rotating shaft 63 to reset to the side of the valve plate 62 facing the water surface and pointing to the water inlet pipe 22, the reset piece is in particular a torsion spring, one end of the rotating shaft 63 is fixedly connected with one end of the torsion spring after penetrating through the side wall of the three-way valve 61 in a sealing way, and the other end of the torsion spring is fixedly connected with the outer wall of the three-way valve 61; in the initial state, the upstream side of the valve plate 62 is directed toward the inlet pipe 22.
Specifically, when the upstream side of the valve plate 62 is turned to be directed toward the water inlet pipe 22, the cold water pipe 4 is communicated with the water inlet pipe 22; when the upstream side of the valve plate 62 points to the quick connector 3, the cold water pipe 4 is communicated with the quick connector 3.
In addition, referring to fig. 2 and 3, the control mechanism comprises a sliding block 7 slidably arranged at one end of the water inlet pipe 22 far away from the three-way valve 61, the outer peripheral wall of the sliding block 7 is in sealed sliding connection with the inner peripheral wall of the water inlet pipe 22, and a one-way circulation structure for only circulating liquid from one end of the water inlet pipe 22 connected with the quick connector 3 to one end of the water inlet pipe 22 connected with the three-way valve 61 is arranged in the sliding block 7; the slide block 7 is connected with a reed 71 extending out of the end part of the adjacent quick connector 3, and the bottom of the back water side of the valve plate 62 is fixedly connected with a hook 621 inserted into the free end of the reed 71;
the control mechanism further comprises a control assembly configured to push the slider 7 to move in a direction away from the regulator valve when the control lever 53 moves in a direction away from the regulator valve; specifically, the control assembly includes a first magnet 72 fixedly connected to the slider 7 and a second magnet 54 fixedly connected to the free end of the control rod 53, the first magnet 72 and the second magnet 54 are magnetically attracted, the water inlet pipe 22 is made of a non-ferromagnetic material, and the first magnet 72 and the second magnet 54 are all annularly arranged or are all arranged in a plurality of annular intervals.
After setting like this, when the environmental protection gas in the overheated gas box 11 circulates to the expansion pipe 51, when this time, the second magnetite 54 attracts first magnetite 72 and makes slider 7 to be close to the direction of the three-way valve 61 on another adjacent cabinet body 1 and remove, in this process, the free end of reed 71 on slider 7 at first imbeds in the hook 621 on valve block 62, and along with slider 7's continuation removal, reed 71 promotes valve block 62 and overturns around axis 63 axis, the reed 71 needs to overcome the torsional deformation power of reset piece this moment, therefore reed 71 free end can remain the embedding throughout on hook 621, and along with valve block 62's upset, reed 71 self also takes place bending deformation, in order to adapt to the upset state of valve block 62, until 62 overturns to its upstream face direction slider 7, cold water pipe 4 in this cabinet body 1 and the corresponding inlet tube 22 intercommunication of overheated gas box 11 at this moment, can make both ends all lead to the cold water, the nimble effect of adjusting a plurality of looped netowrk cabinets after having realized, and the cold water is along with the axis of rotating shaft 63, and the high temperature of the valve block 11 is gone up, the high-accuracy is gone up to the detecting the extra magnetic field of the valve block, the high temperature is triggered along with the high temperature, the high voltage is detected, the extra is not disturbed, the expansion element is triggered, the device is set up.
Moreover, the superheated air boxes 11 have different superheated temperatures, the expansion degrees of the environment-friendly air are different, so that the displacement of the movement of the control rod 53 is different, and the corresponding overturning angles of the valves are also different, so that the cold water quantity flowing into the corresponding water inlet pipe 22 of the superheated air box 11 from the cold water pipe 4 of the other cabinet body 1 is also different, the quantity of the self-adapting borrowed cold water can be adjusted by the more superheated degree, and the heat dissipation and the cooling of the air boxes 11 of the other cabinet body 1 are not greatly disturbed.
And once the temperature in the superheated air tank 11 is reduced, the air pressure in the expansion pipe 51 is reduced, the torsion deformation force of the resetting piece and the deformation force of the reed 71 can drive the sliding block 7 to move back, and the valve plate 62 can also turn over and reset to an initial state so as to ensure the respective heat dissipation and cooling effects of each cabinet body 1.
Referring to fig. 2 and 3, the unidirectional flow structure includes a through hole 73 penetrating through the slider 7 in the axial direction, a sliding rod 74 is slidably inserted in the through hole 73, a baffle 75 for shielding the through hole 73 is fixedly connected to one end of the sliding rod 74 near the three-way valve 61, and a bracket 76 having an outer diameter larger than the aperture of the through hole 73 is fixedly connected to the other end of the sliding rod 74; the perforation 73 is arranged in a flaring shape, the closing end of the perforation 73 is arranged close to the three-way valve 61, and the bracket 76 is positioned in the perforation 73 and has an outer diameter larger than the aperture of the closing end of the perforation 73.
Thus, when cold water is fed into the corresponding water inlet pipe 22 from the cold water pipe 4, the cold water impacts on the baffle plate 75, so that the baffle plate 75 seals the through holes 73 on the sliding block 7, and the cold water in the water inlet pipe 22 cannot flow into the other water inlet pipe 22; when cold water in the cold water pipe 4 flows into the other water inlet pipe 22 through the three-way valve 61 and the two quick connectors 3, the cold water flows through the gaps between the bracket 76 and the sliding rod 74 and the wall of the through hole 73, and the baffle plate 75 is far away from the sliding block 7, at this time, the cold water in the cold water pipe 4 can flow into the other water inlet pipe 22, and the bidirectional water supply to the water inlet pipe 22 can be realized.
In order to fully utilize the heat in the superheated steam box 11, referring to fig. 1 and 4, a moisture absorbing box 8 is further provided in the cabinet 1, and a moisture absorbing material layer 81 is filled in the moisture absorbing box 8, and the moisture absorbing material layer 81 may be specifically formed by filling a silica gel desiccant and a diatomite absorbent, and the expansion pipe 51 is provided penetrating the moisture absorbing material layer 81.
In this way, even in an external humid environment, the moisture in the cabinet 1 is adsorbed by the moisture absorbing material layer 81 in the moisture absorbing box 8, and the moisture in the cabinet 1 can be reduced; once the air box 11 is overheated, overheated environment-friendly air flows into the expansion pipe 51, and the diluting material layer can be heated and dried, so that the moisture-absorbing material layer 81 can be reused.
The implementation principle of the ring main unit of the environment-friendly gas-insulated switchgear of the embodiment of the application is as follows:
after the water inlet pipes 22 on the ring main units which are adjacently arranged are sequentially connected, the environment-friendly gas in the gas tank 11 can be radiated and cooled by cold water flowing through the heat absorption pipes 21, so that the temperature in the gas tank 11 is not excessively high and is maintained at proper air pressure. When the air tank 11 in a certain cabinet body 1 is overheated, the air expansion and the air pressure in the air tank 11 are increased, part of overheated environment-friendly air flows into the expansion pipe 51 and pushes the piston 52 to move in the expansion pipe 51, so that the control rod 53 drives the sliding block 7 to move, at the moment, the reed 71 pushes the valve plate 62 to overturn around the axis of the rotating shaft 63 until the valve plate 62 overturns until the upstream surface of the valve plate 62 points to the sliding block 7, at the moment, the cold water pipe 4 in the cabinet body 1 is communicated with the water inlet pipe 22 corresponding to the overheated air tank 11, cold water is introduced into both ends of the water inlet pipe 22, the flexible borrowing effect of the spliced plurality of ring main units is realized, the heat exchange efficiency of the heat absorption pipe 21 in the overheated air tank 11 can be remarkably improved, the temperature in the air tank 11 can be rapidly reduced, the air pressure in the air tank 11 can be kept in a safer state as much as possible, the possibility of leakage caused by long-time overheat of the air tank 11 is effectively avoided, and the long-time stable operation of the ring main unit of the application can be ensured. And the cold water is borrowed along with the expansion follow-up trigger of the overheated gas in the gas tank 11, more detection elements and control elements are not required to be additionally arranged, and the cold water cannot be interfered by the magnetic field with high current and high voltage in the cabinet body 1, so that the trigger is more accurate.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," "third," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. The terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. "upper", "lower", "left", "right", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object to be described changes.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. The utility model provides an environmental protection gas-insulated switchgear looped netowrk cabinet, includes cabinet body (1) and gas tank (11), its characterized in that, be provided with heat absorption pipe (21) in gas tank (11), heat absorption pipe (21) one end is connected with and is located inlet tube (22) outside gas tank (11), the other end is connected with outlet pipe (23), inlet tube (22) are followed cabinet body (1) width direction sets up, inlet tube (22) both ends all are provided with another quick-operation joint (3) of inlet tube (22) tip butt joint in cabinet body (1);
a cold water pipe (4) is connected to the side wall of one end of the water inlet pipe (22), a cooling water circulation system is arranged between the cold water pipe (4) and the water outlet pipe (23), one group of cooling water circulation systems corresponds to a plurality of cold water pipes (4), and the connecting part of the cold water pipe (4) and the water inlet pipe (22) is provided with a regulating valve for guiding cold water to the near end or the far end of the water inlet pipe (22);
the air box (11) is also connected with an expansion pipe (51) which is parallel to the water inlet pipe (22), a piston (52) is arranged in the expansion pipe (51) in a sliding way, and a control rod (53) which is parallel to the water inlet pipe (22) is fixedly connected to the piston (52);
the water inlet pipe (22) is provided with a control mechanism, and the control mechanism is configured to control the regulating valve in the other cabinet body (1) to guide cold water in the cold water pipe (4) in the cabinet body (1) to the near end of the water inlet pipe (22) in the cabinet body (1) when the control rod (53) moves in the direction away from the regulating valve.
2. The ring main unit of the environment-friendly gas-insulated switchgear according to claim 1, wherein the regulating valve comprises a three-way valve (61) connected between the cold water pipe (4) and the water inlet pipe (22), the cross section of the middle part of the three-way valve (61) is rectangular, a valve plate (62) is rotationally connected, one end of two coaxial outlet ends of the three-way valve (61) is connected with the quick connector (3), the other end of the two coaxial outlet ends of the three-way valve is connected with the water inlet pipe (22), and a rotating shaft (63) rotationally arranged on the three-way valve (61) is fixedly connected at the middle part of the valve plate (62); the three-way valve (61) is provided with a reset piece for driving the rotating shaft (63) to reset to the side of the valve plate (62) facing the water surface and pointing to the water inlet pipe (22);
when the upstream side of the valve plate (62) turns to be directed towards the water inlet pipe (22), the cold water pipe (4) is communicated with the water inlet pipe (22); when the upstream surface side of the valve plate (62) points to the quick connector (3), the cold water pipe (4) is communicated with the quick connector (3).
3. The ring main unit of an environment-friendly gas-insulated switchgear according to claim 2, wherein the control mechanism comprises a sliding block (7) slidably arranged at one end of the water inlet pipe (22) far away from the three-way valve (61), a unidirectional circulation structure for only allowing liquid to circulate from one end of the water inlet pipe (22) connected with the quick connector (3) to one end of the water inlet pipe (22) connected with the three-way valve (61) is arranged in the sliding block (7), a reed (71) extending out of the end part of the adjacent quick connector (3) is connected to the sliding block (7), and a hook (621) inserted with the free end of the reed (71) is fixedly connected to the bottom of the back water side of the valve plate (62);
the control mechanism further comprises a control assembly configured to push the slider (7) to move in a direction away from the regulator valve when the control lever (53) moves in a direction away from the regulator valve.
4. An environment-friendly gas-insulated switchgear ring main unit according to claim 3, wherein the control assembly comprises a first magnet (72) fixedly connected to the slider (7) and a second magnet (54) fixedly connected to the free end of the control rod (53), the first magnet (72) and the second magnet (54) magnetically attract each other, and the water inlet pipe (22) is made of a non-ferromagnetic material.
5. An environment-friendly gas-insulated switchgear ring main unit according to claim 3, wherein the unidirectional flow structure comprises a through hole (73) penetrating through the sliding block (7), a sliding rod (74) is arranged in the through hole (73) in a sliding manner, one end, close to the three-way valve (61), of the sliding rod (74) is fixedly connected with a baffle (75) for shielding the through hole (73), and the other end is fixedly connected with a bracket (76) with an outer diameter larger than the aperture of the through hole (73).
6. The ring main unit of an environment-friendly gas-insulated switchgear according to claim 5, wherein the perforation (73) is provided in a flaring shape, a closing end of the perforation (73) is provided close to the three-way valve (61), and the bracket (76) is positioned in the perforation (73) and has an outer diameter larger than an aperture of the closing end of the perforation (73).
7. An environment-friendly gas-insulated switchgear ring main unit according to claim 1, characterized in that the heat absorbing pipe (21) is coiled in a serpentine shape in the gas tank (11).
8. An environment-friendly gas-insulated switchgear ring main unit according to claim 1, wherein a moisture absorption box (8) is arranged in the cabinet body (1), a moisture absorption material layer (81) is filled in the moisture absorption box (8), and the expansion pipe (51) penetrates through the moisture absorption material layer (81).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410149253.9A CN117712896B (en) | 2024-02-02 | 2024-02-02 | Environment-friendly gas-insulated combined electrical apparatus looped netowrk cabinet |
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| CN202410149253.9A CN117712896B (en) | 2024-02-02 | 2024-02-02 | Environment-friendly gas-insulated combined electrical apparatus looped netowrk cabinet |
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| CN117712896B CN117712896B (en) | 2024-04-26 |
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|---|---|
| CN117712896B (en) | 2024-04-26 |
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