CN115632330A

CN115632330A - High-voltage prefabricated substation

Info

Publication number: CN115632330A
Application number: CN202210995866.5A
Authority: CN
Inventors: 蒋鼎峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2023-01-20

Abstract

The invention provides a high-voltage pre-installed transformer substation, and relates to the technical field of transformer substations. This high pressure prepackage type transformer substation, including installing in two gibs on ground, two the upside sliding connection of gib has a fire-retardant lid case, and the ground of gib one side has dug the foundation ditch, the inside of foundation ditch is provided with fixed mounting's base and storage box, the side fixed mounting that goes up of base has high pressure telescopic link, the storage box is installed the solenoid valve in the inboard of base downwards, and the bottom of high pressure telescopic link is connected to another mouth-piece of solenoid valve. After the transformer substation catches fire, the base is driven to move downwards by exhaust in the high-pressure telescopic rod, the base and the prefabricated transformer substation enter the storage box, the high-strength plugging film is torn away from the inner side face of the storage box, the supporting block is pushed to stretch out to enable the base and the prefabricated transformer substation to be separated, and the dry powder extinguishing agent in the storage box and gas in the high-pressure telescopic rod enable the separated transformer substation to quickly complete fire extinguishing.

Description

High-voltage prefabricated substation

Technical Field

The invention relates to the technical field of transformer substations, in particular to a high-voltage prefabricated transformer substation.

Background

The transformer substation is a place for converting voltage and current, receiving electric energy and distributing electric energy in an electric power system. The substations in the power plant are step-up substations, which are used to boost up and feed back the electrical energy generated by the generator into the high-voltage network.

The problem that needs to be solved in the electric power industry when quick fire extinguishing after the transformer substation catches fire always, conventional mode is: when the fire happens in the running process, the power supply must be cut off first, and then the fire is extinguished; if the power cannot be cut off quickly, carbon dioxide, carbon tetrachloride, 1211 fire extinguisher or dry powder fire extinguisher can be used. In use, a sufficient safety distance must be maintained, which should not be less than 40cm for 10kV and below equipment. The operation process needs to be completed manually, the time from the ignition of the transformer substation to the manual fire fighting is too long, although the transformer substation can complete automatic power off, the damage of the transformer substation is serious due to the fire, and the transformer substation is usually directly scrapped in daily life, so that great economic damage is caused.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a high-voltage pre-installed substation, which solves the problems that the substation can be powered off after being ignited, but the time from ignition to fire extinguishing is long, irreversible damage is easily caused to the substation, and further, great economic loss is caused.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a high-voltage prefabricated substation comprises two guide strips arranged on the ground, wherein the upper sides of the two guide strips are connected with a fire-insulating cover box in a sliding mode, a foundation pit is dug in the ground on one side of each guide strip, a fixedly installed base and a storage box are arranged inside the foundation pit, a high-voltage telescopic rod is fixedly installed on the upper side face of the base, an electromagnetic valve is installed on the inner side of the base downwards in the storage box, and the other connector pipe of the electromagnetic valve is connected with the bottom of the high-voltage telescopic rod;

the side wall of the storage box is hollow, the left side wall and the right side wall of the storage box are connected with supporting blocks in a sliding mode, dry powder extinguishing agents are filled in the side wall of the storage box and located on the outer sides of the supporting blocks, supporting plates are rotatably connected to the upper portion of the storage box, and supporting rods for supporting the supporting plates are fixedly connected to the side wall of the uppermost end portion of the high-pressure telescopic rod;

a base fixedly connected with the upper end of the high-voltage telescopic rod is arranged on the upper side of the supporting plate, a steel wire rope is fixedly connected between the base and the fire-proof cover box to perform motion linkage, a prefabricated substation with an open lower side and a fire sensor is arranged on the upper side surface of the base, the prefabricated substation is connected with the base through a damping fastener, and a disconnection assembly is arranged in the middle of the base;

the side face of the preassembled transformer substation, which is on the same side with the supporting block, is fixedly provided with a side plate, and the base and the side plate are positioned above the supporting plate and at the inner side of the storage box;

the lower surface of the base is fixedly provided with support frames at four sides, through holes penetrate through the inner side of the hollow part of the side wall of the storage box, high-strength plugging films which are respectively arranged are respectively stuck at the positions, far away from the inner side of the hollow part of the side wall, of the through holes of the four side walls, the lower parts of the four support frames are respectively fixedly connected with the upper ends of the four high-strength plugging films, and the upper ends of the support rods are positioned at the inner sides of the high-strength plugging films.

Preferably, the supporting block is hollow inside, and the lower side surface of the inner side of the side wall of the storage box is an inclined surface inclined towards the outer side of the storage box.

Preferably, the volume ratio of the inner wall of the high-pressure telescopic rod is 1:2-6 carbon tetrachloride and carbon dioxide.

Preferably, the shock attenuation fastener comprises insertion head, two side clamping pieces and ZT type damping spring damper, the bottom surface fixed connection of insertion head and prepackage type transformer substation side wall department, the base is provided with the installation cavity of upper shed in the position of insertion head below, the fixed connection of side clamping piece is inner wall and elasticity clamp in the both sides of insertion head on the installation cavity, ZT type damping spring damper fixed mounting is in the interior bottom surface of installation cavity, and the upper end and the contact of insertion head.

Preferably, a grounding component is sleeved on the part, between the two guide strips, of the steel wire rope.

Preferably, the disconnection assembly comprises an insulating lower plate and an insulating upper plate, a lower connector lug and an upper connector lug are respectively inserted into the insulating lower plate and the insulating upper plate, the insulating upper plate is fixedly connected with the base, the upper surface of the insulating upper plate is fixedly provided with a grounding connector fixed to the end of the steel wire rope, the insulating lower plate is separated from the base, the edge of the insulating lower plate is fixedly provided with an electromagnet, the electromagnet is located on the outer side of the insulating upper plate, and an iron sheet is embedded in the position, above the electromagnet, of the base.

Preferably, the storage box is provided with independent power supply's control box in the one side department of keeping away from the lid case that fires, control box and electro-magnet and fire sensor electric connection, and upper portion is opened, the open department in upper portion of control box sets up spacing stone mound.

Preferably, the lower part of the fire-proof cover box is provided with a heat-insulating layer with holes and a low-temperature deformation component, the position of the fire-proof cover box above the low-temperature deformation component is a negative pressure cavity, the inner cavity of the fire-proof cover box above the heat-insulating layer is provided with a smoke filtering component, a group of opposite side walls of the fire-proof cover box at the inner cavity are provided with exhaust ports, and the inner side of each exhaust port is pasted with a low-pressure PE film.

Preferably, the high-strength plugging film is made of polytetrafluoroethylene, the thickness of the high-strength plugging film is 0.5mm, and the high-strength plugging film covers all through holes in the side wall of the storage box.

Preferably, the low-temperature deformation assembly comprises a thermal deformation membrane and low-temperature strain gauges, the two ends of the thermal deformation membrane in the length direction at the lower inner wall of the negative pressure cavity are fixed and tensioned, the two ends of the low-temperature strain gauges are fixedly connected to the two sides of the thermal deformation membrane in the corresponding width direction of the lower inner wall of the negative pressure cavity, the number of the low-temperature strain gauges is at least two, and the low-temperature strain gauges are pressed on the upper side of the thermal deformation membrane.

(III) advantageous effects

The invention provides a high-voltage prefabricated substation. The method has the following beneficial effects:

1. according to the invention, after the transformer substation catches fire, the exhaust gas in the high-pressure telescopic rod drives the base to move downwards, so that the base and the prefabricated transformer substation enter the storage box, the high-strength plugging film is torn off from the inner side surface of the storage box, and the supporting block is pushed to extend out, so that the base and the prefabricated transformer substation are separated, the dry powder fire extinguishing agent in the storage box and the gas in the high-pressure telescopic rod enable the separated transformer substation to quickly complete fire extinguishing, and the base and the prefabricated transformer substation enter the storage box, so that pedestrians passing through the ground cannot be injured.

2. According to the invention, when the base falls into the storage box, the fire-isolating cover box is driven by the steel wire rope to cover the foundation pit, so that the rapidly increased air pressure in the storage box can be relieved, the smoke can be filtered, and the air pollution is reduced.

3. According to the invention, under the action of the damping fastener, when the prefabricated substation is installed on the base, the corresponding insertion head of the prefabricated substation is clamped between the two side clamping pieces, the prefabricated substation and the base can be prevented from being freely separated under the shape matching of the insertion head and the two side clamping pieces, and the vibration generated when the insertion head is installed can be reduced under the action of the ZT-type damping spring damper.

4. According to the invention, the electric power connection of the two sides of the disconnection assembly is completed through the lower joints and the upper joints on the insulating lower plate and the insulating upper plate corresponding to the disconnection assembly, after the electromagnet is powered off, the electromagnet is separated from the iron sheet of the base, and the lower joints and the upper joints are quickly disconnected in the falling process of the insulating lower plate, so that the quick power-off is realized.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an enlarged view at B of FIG. 1;

FIG. 4 is an enlarged view at C of FIG. 1;

FIG. 5 is an enlarged view taken at D in FIG. 1;

FIG. 6 is a schematic view of a shock absorbing fastener of the present invention;

FIG. 7 is an isometric view of the fire insulated lid box of the present invention;

FIG. 8 is a horizontal cross-sectional view of the fire resistant canopy of the present invention;

FIG. 9 is a schematic view of the structure of the stand of the present invention;

fig. 10 is a top view of the invention with the pre-assembled substation and base removed.

1, a prefabricated substation; 2. a support bar; 3. a side plate; 4. a support frame; 5. a storage box; 6. a high-pressure telescopic rod; 7. a base; 8. a wire rope; 9. a guide bar; 10. a fire-proof cover box; 11. a disconnect assembly; 12. a support block; 13. a through hole; 14. a high-strength plugging film; 15. a support plate; 16. a pin; 17. a grounding head; 18. a base; 19. a shock absorbing fastener; 20. an electromagnet; 21. an insulating lower plate; 22. an insulating upper plate; 23. a thermal insulation layer; 24. a thermally deformable membrane; 25. a low temperature strain gage; 26. a negative pressure cavity; 27. a flue gas filtering component; 28. low pressure PE film.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1-10, a high-voltage prefabricated substation comprises two guide strips 9 made of concrete and installed on the ground, wherein the guide strips 9 are fixed in side pits dug out of the ground, the two guide strips 9 are distributed in parallel, the middle parts of the upper sides of the two guide strips 9 are both provided with protruding joints, the upper sides of the two guide strips 9 are connected with a fire-insulating cover box 10 in a sliding manner, namely, the lower side surface of the fire-insulating cover box 10 is a sliding chute matched with the protruding joints of the guide strips 9, and the fire-insulating cover box 10 slides along the guide strips 9 under the matching of the protruding joints and the fire-insulating cover box 10.

The lower part of the fire-insulating cover box 10 is provided with a heat-insulating layer 23 with holes and a low-temperature deformation assembly, the heat-insulating layer 23 is made of a nano fire-retardant heat-insulating material and has the functions of flame retardance and heat insulation, the diameter of the corresponding hole on the heat-insulating layer 23 is 0.3-0.5mm, smoke enters an inner cavity when the pre-packaged substation is burnt through Kong Gonggao corresponding to the heat-insulating layer 23, and the inner cavity provided with a smoke filtering assembly 27 is arranged above the heat-insulating layer 23 of the fire-insulating cover box 10.

The smoke filtering component 27 is positioned above the heat insulating layer 23 and completely covers the heat insulating layer 23, the smoke filtering component 27 is composed of an outer net rack and an internal filler, the internal filler is positioned on the inner side of the outer net rack and is composed of any two or more of activated carbon, diacetate fiber tows, polypropylene tows and inorganic mineral fibers, and the smoke filtering component 27 is prepared by conventional configuration in the industry. The internal filler can filter and absorb solid particles mixed in the smoke passing through the pore structure of the heat insulation layer 23, and air pollution is reduced.

The front and rear side walls of the internal cavity of the fire-insulating cover box 10 are provided with exhaust ports.

The rain shield with the downward opening is fixedly connected to the outer side of the exhaust port of the fire-insulating cover box 10, smoke passing through the exhaust port is discharged from the opening of the rain shield, the low-pressure PE film 28 is pasted to the inner side of the exhaust port, the low-pressure PE film 28 can burst under the action of the air pressure inside the inner cavity, and before bursting, external wet air can be prevented from entering the inner cavity from the rain shield and the exhaust port, so that the internal filler of the smoke filtering component 27 is wetted. The outside of the fire-proof cover box 10, namely the five sides of the upper, front, back, left and right, is sprayed with the thermal insulation coating, so that the smoke can be prevented from being discharged from the rain shield, and heat transfer is carried out in the inner cavity, so that the condition that the temperature of the outside of the fire-proof cover box 10 is too high is realized.

The position of the cover box 10 that fires above the low temperature deformation component is negative pressure cavity 26, the quantity of negative pressure cavity 26 has two, and distribute in the left and right sides of cavity, negative pressure cavity 26 and gas vent fire the adjacent distribution of cover box 10 department at the separation, there are side opening and well opening the downside that fires cover box 10, the low temperature deformation component comprises heat altered diaphragm 24 and low temperature foil gage 25, the side opening corresponds with the position of low temperature deformation component, well opening corresponds with the position of insulating layer 23. The Thermal deformation diaphragm 24 is made of PET material, the corresponding Thermal deformation temperature is 67 ℃, the material of the low-temperature strain gauge 25 is the same as that of a Thermal Fuse 12G 65-degree temperature Fuse used by a Japanese inner bridge temperature Fuse/temperature protector, the thickness of the low-temperature strain gauge 25 is 0.3mm, after the low-temperature strain gauge 25 is heated, the low-temperature strain gauge 25 is deformed earlier than the Thermal deformation diaphragm 24, after the low-temperature strain gauge 25 is thermally deformed, the pressure on the Thermal deformation diaphragm 24 is reduced, after the Thermal deformation diaphragm 24 is deformed, a side through hole of the flame-proof cover box 10 at the lower side of the Thermal deformation diaphragm 24 is communicated with the negative pressure cavity 26, so that gas at the inner side of the storage box 5 can be sucked into the negative pressure cavity 26 under the suction force of the negative pressure cavity 26, the rapidly increased gas pressure at the inner side of the storage box 5 can be buffered, and the condition that the flame-proof cover box 10 is jacked up by the gas pressure due to the rapid increase of the gas pressure at the inner side of the storage box 5 is prevented.

The both ends of heat altered diaphragm 24 inner wall department along length direction under negative pressure cavity 26 are fixed and tensioning, the both ends fixed connection of low temperature foil gage 25 is in the both sides department that heat altered diaphragm 24 inner wall corresponds the width direction under negative pressure cavity 26, the quantity of low temperature foil gage 25 has two at least, and the voltage-sharing is in the upside of heat altered diaphragm 24, under the cooperation of the heat altered diaphragm 24 of tensioning and low temperature foil gage 25, can prevent that the negative pressure environment of negative pressure cavity 26 from making the both sides perk of heat altered diaphragm 24 width direction, and then with the side opening intercommunication of the downside of fire-proof lid case 10, make the negative pressure environment of negative pressure cavity 26 destroy in advance, lead to can not playing due cushioning effect.

The ground of 9 one sides of gib block is dug there is the foundation ditch, and the foundation ditch communicates with the side pit in upper portion, and the inside of foundation ditch is provided with fixed mounting's base 7 and storage box 5, and the side is flat mutually on the side and the storage box 5 of going up of gib block 9, and perpendicular to storage box 5's a set of opposite flank, and the side fixed mounting that goes up of base 7 has high-pressure telescopic link 6, and the inner wall packing of high-pressure telescopic link 6 has volume ratio 1:2-6, the compression-expansion rod 6 is in a raised limit state under the action of the carbon tetrachloride and carbon dioxide filled inside. The solenoid valve is installed to storage box 5 inboard downwards at base 7, and the bottom of high pressure telescopic link 6 is connected to another mouth-piece of solenoid valve, opens the back at the solenoid valve, and carbon tetrachloride and carbon dioxide in the high pressure telescopic link 6 can enter into storage box 5 through the pipeline in, and the downside of base 7 is for opening the structure, and solenoid valve and the pipeline of connecting solenoid valve and high pressure telescopic link 6 are located the open structure of base 7 promptly, also easy to assemble solenoid valve and corresponding pipeline like this. The pipeline adopts high pressure resistant pipeline for the pipeline can not explode under carbon tetrachloride and carbon dioxide's effect, and then makes carbon tetrachloride and the carbon dioxide in the high pressure telescopic link 6 take place to leak.

The inside of the side wall of the storage box 5 is hollow, the left side wall and the right side wall are connected with a supporting block 12 in a sliding mode, the supporting block 12 is made of concrete or cast iron, the inside of the supporting block 12 is hollow, and the lower side face of the inner side of the side wall of the storage box 5 is an inclined face inclined towards the outer side of the storage box 5. After carbon tetrachloride and carbon dioxide in high pressure telescopic link 6 entered into storage box 5, because high strength plugging film 14 has plugged up through-hole 13 of lower part, carbon tetrachloride and carbon dioxide can act on the inclined plane department of supporting shoe 12 like this for supporting shoe 12 promotes to the storage box 5 inboard, but because the effect of blockking of high strength plugging film 14, make supporting shoe 12 can't stretch into storage box 5 inboard, after high strength plugging film 14 was driven by support frame 4 and was torn supporting shoe 12, supporting shoe 12 could stretch into storage box 5 inboard. One side of the supporting block 12 is slidably inserted into the outer side of the hollow position of the storage box 5, and the other side is slidably connected with the outer side of the hollow position of the storage box 5 and can slide into the inner side of the storage box 5.

The inside outside that just is located supporting shoe 12 of lateral wall of storage box 5 all fills with the dry powder fire extinguishing agent, and the weight ratio of the dry powder fire extinguishing agent of both sides is 1 about storage box 5: 4. the upper portion of four sides on storage box 5 upper portion all sets up the holding tank, and the distance of side and prepackage type transformer substation 1 are all rotated in the holding tank on the lower side edge distance supporting shoe 12 of holding tank and are connected with backup pad 15 with 12 upper flanks, and two backup pads 15 are pressed from both sides between two backup pads 15 about in four backup pads 15. Four backup pads 15 can rotate downwards to the holding tank simultaneously like this in, and then make things convenient for base 18 and prepackage type transformer substation 1 whereabouts to enter into storage box 5 in, the lateral wall fixedly connected with of the top portion of high-pressure telescopic link 6 supports the bracing piece 2 of backup pad 15, and the lateral wall of the top portion of every high-pressure telescopic link 6 all fixedly connected two bracing pieces 2 promptly to this supports two adjacent backup pads 15 that high-pressure telescopic link 6 is close to. The upper end of the supporting rod 2 is positioned at the inner side of the high-strength plugging film 14, so that the supporting rod 2 cannot collide with the inner side surface of the storage box 5 when the high-pressure telescopic rod 6 exhausts air to drive the supporting rod 2 to move downwards.

The upside of backup pad 15 is provided with the base 18 with 6 upper end fixed connection of high pressure telescopic link, under the effect of the corner cut of backup pad 15, can make supporting shoe 12 crowd to the hollow part of storage box 5 inboard, make the base 18 can reach the downside of supporting shoe 12, fixed connection wire rope 8 carries out the motion linkage between base 18 and the lid case 10 that fires at a distance from, the holding tank department that the right side wall of storage box 5 corresponds is provided with logical groove, logical groove intercommunication leads to the inboard of groove and storage box 5, it is connected with the gyro wheel that distributes from top to bottom to lead to groove department rotation, wire rope 8 passes from between two gyro wheels, when base 7 is located backup pad 15 top, wire rope 8 is in lax state.

The part of the steel wire rope 8 between the two guide strips 9 is sleeved with a grounding assembly, the grounding assembly consists of a pin 16 and a grounding head 17, the lower end of the pin 16 is inserted into the inner side of the grounding head 17, the steel wire rope 8 penetrates through the inner side of the upper part of the pin 16, one end, connected with the steel wire rope 8, of the fire-insulating cover box 10 is located at a fixing block on the right side of the lower side face of the fire-insulating cover box 10, the lower side face of the fire-insulating cover box 10 is level with the upper side face of the storage box 5, the lower end of the grounding head 17 is inserted into the bottom face of the bottom of the side pit, and the grounding head 17 is located on the right side of the side pit.

The upper side of the base 18 is provided with a pre-installed substation 1 with an open lower side and installed with fire sensors. The prefabricated substation 1 is connected with a base 18 through a damping fastener 19, a high-voltage transformer and a low-voltage transformer are fixedly mounted on the upper side face of the base 18 and located on the inner side of the prefabricated substation 1, a side door is rotatably connected to the front side of the prefabricated substation 1, a cooling fan is mounted at the top of the prefabricated substation 1, heat dissipation windows are formed in the left side wall and the right side wall of the prefabricated substation 1 and used for cooling the high-voltage transformer and the low-voltage transformer in the prefabricated substation 1 during normal working, and the arrangement directions of the heat dissipation windows and the rain shields are different.

The middle part of the base 7 is provided with a stepped hole, a wire protection pipe is embedded in the position corresponding to the stepped hole at the bottom of the foundation pit and is fixedly connected with the bottom surface of the base 7, the inner diameter of the wire protection pipe is consistent with the inner diameter of the lower part structure of the stepped hole, the middle part of the base 18 is provided with a disconnection component 11, the disconnection component 11 is positioned right above the stepped hole, the disconnection component 11 comprises an insulating lower plate 21 and an insulating upper plate 22, the insulating lower plate 21 and the insulating upper plate 22 are respectively provided with a lower connector lug and an upper connector lug which are inserted and connected, the lower connector lug and the upper connector lug are both made of copper materials for supporting, the upper connector lug corresponding to the insulating upper plate 22 is used for connecting a high-voltage power transformer and a low-voltage power transformer, the lower connector lug corresponding to the insulating lower plate 21 is used for connecting wires which are inserted into the wire protection pipe and pass through the stepped hole, insulating upper plate 22 and base 18 fixed connection, and insulating upper plate 22 upper surface fixed mounting have with wire rope 8 end fixed ground connection, high-voltage transformer and low-voltage transformer ground connection in ground connection department, insulating hypoplastron 21 sets up with base 18 separation and edge fixed mounting has electro-magnet 20, electro-magnet 20 is located the outside of insulating upper plate 22, base 18 pre-buries the iron sheet in the position of electro-magnet 20 top, after fire sensor detects that high-pressure prepackage type transformer substation catches fire, control box control electro-magnet 20 outage, insulating hypoplastron 21 separates with insulating upper plate 22 under the action of self weight and the gravity of the electric wire that lower terminal and lower terminal are connected like this, and then the lower terminal also realizes the separation with the upper terminal, high-voltage transformer and low-voltage transformer directly accomplish the outage like this.

The side face of the preassembled transformer substation 1 on the same side as the supporting block 12 is fixedly provided with the side plate 3, the side plate 3 is in contact with the storage box 5 extending into the side face, the base 18 continuously falls, the preassembled transformer substation 1 and the base 18 are separated at the damping fastener 19, and therefore the dry powder extinguishing agent sprayed out of the through hole 13 of the storage box 5 can be respectively sprayed onto the preassembled transformer substation 1, the high-voltage transformer and the low-voltage transformer to further complete fire extinguishing, the base 18 and the side plate 3 are located on the inner side of the storage box 5 above the supporting plate 15, and the storage box 5 cannot be collided when the base 18 and the side plate 3 fall.

The lower surface of base 18 just is located equal fixed mounting in four sides department and has support frame 4, support frame 4 is by the support body, press frame and floor to constitute, the L shape that is of support body, and all run through at vertical part and horizontal part, bracing piece 2 stretches through from the department that runs through of the vertical part of support body, the cross-section of support body is L shape, and the lower extreme of vertical part and the horizontal part fixed connection of support body, the horizontal part of pressing the frame is towards the inner wall of storage box 5, press the frame to be located the support body and correspond one side department that the vertical part was kept away from to the horizontal part, between the vertical part of floor fixed connection support body and the downside of base 18, one side that the vertical part was kept away from to the horizontal part of support body is towards the inner wall of storage box 5, support frame 4 is along with base 18 whereabouts back, fall on the side of base 7, and then support base 18, the height of support frame 4 is the same after 6 complete compressions. Under the gravity of the base 18 and the gravity of the high-voltage transformer and the low-voltage transformer, the high-voltage telescopic rod 6 is completely compressed, the through holes 13 penetrate through the inner sides of the hollow parts of the side walls of the storage box 5, the high-strength plugging films 14 which are respectively arranged are respectively stuck to the positions, far away from the inner sides of the hollow parts of the side walls, of the through holes 13 of the four side walls, the high-strength plugging films 14 are used for blocking the through holes 13 before the electromagnetic valve is opened, so that the dry powder extinguishing agent in the storage box 5 is leaked in advance, the four inner side surfaces of the storage box 5 form 5-degree included angles with a vertical plane, namely boundary lines of the four inner side surfaces of the storage box 5 are all inclined, the distance from one side, close to the boundary line of the storage box 5, of the four high-strength plugging films 14 is 5cm, the range from the side faces of the four high-strength plugging films 14 to the boundary line of the storage box 5 does not contain the through holes 13, the high-strength plugging films 14 of the high-strength plugging films 14 are made of polytetrafluoroethylene materials, the thickness of the high-strength plugging films is 0.5mm, the high-strength plugging films 14 cover all the through holes 13 in the side wall of the storage box 5, the lower portions of the four support frames 4 are fixedly connected with the upper ends of the four high-strength plugging films 14 respectively, namely the upper ends of the high-strength plugging films 14 are connected to one end of the horizontal portion of the support frame far away from the vertical portion, and after the support frames 4 are driven by the base 18 to move downwards, the high-strength plugging films 14 are torn away from the inner side of the storage box 5.

Damping fastener 19 comprises the insert head, two side clamping pieces and ZT type damping spring damper, the side clamping piece is made by spring steel, the insert head is made by cast iron, the bottom surface fixed connection of insert head and prepackage type transformer substation 1 lateral wall department, base 18 is provided with the installation cavity of upper shed in the position of insert head below, the fixed connection of side clamping piece is inner wall and elasticity clamp in the both sides of insert head on the installation cavity, ZT type damping spring damper fixed mounting is in the interior bottom surface of installation cavity, and the upper end contacts with the insert head, when installing prepackage type transformer substation 1 on base 18, the insert head passes and pushes up on ZT type damping spring damper from between two side clamping pieces, can slow down the vibrations when prepackage type transformer substation 1 installs on base 18 like this, when base 18 separates with prepackage type transformer substation 1, the inboard roll-off of insert head from the clamping piece of two sides.

Storage box 5 is being provided with independent power supply's control box keeping away from one side department of fire-retardant lid case 10, control box and electro-magnet 20 and fire sensor electric connection, and upper portion opens, and control box and electro-magnet 20 and fire sensor supply by independent power supply, and the open department in upper portion of the control box that the control box corresponds sets up spacing stone mound, and the control box is pre-buried in the left side department of ground at the foundation ditch.

The working principle is as follows: the fire sensor detects that the high-voltage prefabricated substation catches fire and then transmits signals to the control box, then the control box controls the electromagnet 20 to be powered off, and then the disconnection assembly 11 separates the used insulating lower plate 21 and the insulating upper plate 22, the lower joint and the upper joint corresponding to the insulating lower plate 21 and the insulating upper plate 22 are separated, and then external electric wires are rapidly powered off with the high-voltage transformer and the low-voltage transformer.

In addition, the control box controls the electromagnetic valve to be opened, when the base 18 and the structure above the base 18 fall down, the high-pressure telescopic rod 6 is pressed downwards, carbon tetrachloride and carbon dioxide in the high-pressure telescopic rod 6 enter the hollow part of the storage box 5 through the pipeline and the electromagnetic valve, the support rod 2 is driven to move downwards during the exhaust compression of the high-pressure telescopic rod 6, and the support force to the support plate 15 is reduced. The supporting plate 15 is rotated downward in the receiving groove and the base 18 is lowered into the storage case 5. When the base 18 is conveyed downwards, the support frame 4 is driven to enable the high-strength plugging film 14 to be torn off from top to bottom, in addition, the steel wire rope 8 is gradually stretched and extends into the storage box 5 under the pushing of carbon tetrachloride and carbon dioxide on the supporting block 12, the supporting block 12 is squeezed into the storage box 5 when the base 18 passes through, and the supporting block 12 is pushed out again after the base 18 passes through the supporting block 12. After the side plates 3 corresponding to the preassembled transformer substation 1 fall onto the supporting blocks 12, the supporting blocks 12 support the preassembled transformer substation 1 through the side plates 3, at this time, the preassembled transformer substation 1 is completely located in the storage box 5, the base 18 falls under the gravity of the base 18 and the gravity of the high-voltage transformer and the low-voltage transformer, the insertion heads are separated from the two side clamping pieces, and the preassembled transformer substation 1 is separated from the base 18. The high-voltage transformer and the low-voltage transformer gradually reach the outside of the preassembled transformer substation 1.

With the tearing of the high-strength plugging film 14, the dry powder extinguishing agent in the storage box 5 can be brought out from the through hole 13 by carbon tetrachloride and carbon dioxide, and then is respectively sprayed onto the pre-installed substation 1, the high-voltage transformer and the low-voltage transformer to quickly extinguish fire.

After the base 18 is separated from the preassembled transformer substation 1, the steel wire rope 8 is stretched, and then the fire-insulating cover box 10 is pulled to move towards the left side, along with the movement of the fire-insulating cover box 10, the pin 16 is separated from the grounding head 17, the fire-insulating cover box 10 stops moving continuously due to the obstruction of the limiting stone pier after moving to the upper part of the foundation pit, after the fire-insulating cover box 10 covers the foundation pit, smoke in the storage box 5 is filtered by the smoke filtering component 27 through the heat insulating layer 23, after the low-pressure PE film 28 is broken by the air pressure in the inner cavity, the smoke is exhausted from the rain-shielding cover through the air outlet, and under the action of the hot air pressure in the storage box 5, the diaphragm 24 and the low-temperature strain gauge 25 are deformed, so that the thermal deformation diaphragm 24 is deformed to generate a gap at the side through the opening, the smoke in the storage box 5 is rapidly sucked away by the negative-pressure cavity 26, and the situation that the air pressure in the storage box 5 overcomes the gravity of the fire-insulating cover box 10 to jack the fire-insulating cover box 10 is avoided.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high pressure prepackage type transformer substation, is including installing in two gib blocks (9) on ground, its characterized in that: the upper sides of the two guide strips (9) are connected with a flame-retardant cover box (10) in a sliding mode, a foundation pit is dug in the ground on one side of each guide strip (9), a fixedly installed base (7) and a storage box (5) are arranged inside the foundation pit, a high-pressure telescopic rod (6) is fixedly installed on the upper side face of the base (7), an electromagnetic valve is installed on the inner side of the base (7) downwards in the storage box (5), and the other connector pipe of the electromagnetic valve is connected with the bottom of the high-pressure telescopic rod (6);

the side wall of the storage box (5) is hollow, the left side wall and the right side wall are connected with supporting blocks (12) in a sliding mode, dry powder extinguishing agents are filled in the side wall of the storage box (5) and located on the outer sides of the supporting blocks (12), supporting plates (15) are connected to the upper portion of the storage box (5) in a rotating mode, and supporting rods (2) supporting the supporting plates (15) are fixedly connected to the side wall of the uppermost end portion of the high-pressure telescopic rod (6);

a base (18) fixedly connected with the upper end of a high-voltage telescopic rod (6) is arranged on the upper side of the supporting plate (15), a steel wire rope (8) is fixedly connected between the base (18) and the fire-insulating cover box (10) to move and link, a pre-installed substation (1) which is open at the lower side and is provided with a fire sensor is arranged on the upper side surface of the base (18), the pre-installed substation (1) is connected with the base (18) through a shock-absorbing fastener (19), and a breaking-connecting assembly (11) is arranged in the middle of the base (18);

the side face of the preassembled transformer substation (1) on the same side as the supporting block (12) is fixedly provided with a side plate (3), and the base (18) and the side plate (3) are positioned above the supporting plate (15) at the position on the inner side of the storage box (5);

the lower surface of the base (18) is provided with support frames (4) which are fixedly arranged on four sides, through holes (13) penetrate through the inner sides of the hollow parts of the side walls of the storage box (5), high-strength plugging films (14) which are respectively arranged are stuck to the positions, far away from the inner sides of the hollow parts of the side walls, of the through holes (13) of the four side walls, and the lower parts of the four support frames (4) are fixedly connected with the upper ends of the four high-strength plugging films (14) respectively.

2. A high-voltage pre-installed substation according to claim 1, characterized in that: the supporting block (12) is hollow, and the lower side surface of the inner side of the side wall of the storage box (5) is an inclined surface inclined towards the outer side of the storage box (5).

3. A high-voltage pre-installed substation according to claim 1, characterized in that: the inner wall of the high-pressure telescopic rod (6) is filled with a material with a volume ratio of 1:2-6 carbon tetrachloride and carbon dioxide.

4. A high-voltage pre-installed substation according to claim 1, characterized in that: damping fastener (19) constitute by insert head, two side clamping pieces and ZT type damping spring damper, the bottom surface fixed connection of insert head and prepackage type transformer substation (1) lateral wall department, base (18) are provided with the installation cavity of upper shed in the position of insert head below, the fixed connection of side clamping piece is inner wall and elasticity clamp in the both sides of insert head on the installation cavity, ZT type damping spring damper fixed mounting is in the interior bottom surface of installation cavity, and the upper end and the contact of insert head.

5. A high-voltage pre-installed substation according to claim 1, characterized in that: and a grounding component is sleeved on the part, between the two guide strips (9), of the steel wire rope (8).

6. A high-voltage pre-installed substation according to claim 1, characterized in that: disconnected subassembly (11) is including insulating hypoplastron (21) and insulating upper plate (22), lower terminal and last terminal of pegging graft respectively on insulating hypoplastron (21) and insulating upper plate (22), insulating upper plate (22) and base (18) fixed connection, and insulating upper plate (22) upper surface fixed mounting have with wire rope (8) end fixing's ground connection joint, insulating hypoplastron (21) and base (18) separation setting and edge fixed mounting have electro-magnet (20), electro-magnet (20) are located the outside of insulating upper plate (22), base (18) are pre-buried to have the iron sheet in the position of electro-magnet (20) top.

7. A high-voltage pre-installed substation according to claim 1, characterized in that: storage box (5) are being provided with independent power source's control box in the one side department of keeping away from fire-retardant lid case (10), control box and electro-magnet (20) and fire sensor electric connection, and upper portion is opened, the open department in upper portion of control box sets up spacing stone mound.

8. A high-voltage pre-installed substation according to claim 1, characterized in that: the lower part of the fire-proof cover box (10) is provided with a heat-insulating layer (23) with holes and a low-temperature deformation component, the position of the fire-proof cover box (10) above the low-temperature deformation component is a negative pressure cavity (26), the inner cavity of the fire-proof cover box (10) above the heat-insulating layer (23) is provided with a smoke filtering component (27), a group of opposite side walls of the fire-proof cover box at the inner cavity are provided with exhaust ports, and the inner side of each exhaust port is pasted with a low-pressure PE film (28).

9. A high-voltage pre-installed substation according to claim 1, characterized in that: the upper end of the support rod (2) is positioned at the inner side of the high-strength plugging membrane (14).