CN218216318U - Alarm device of prepackage type transformer substation - Google Patents

Abstract

The utility model discloses an alarm device of a preassembled transformer substation, which comprises a base, a rectangular box body and an oil collecting pool, wherein the rectangular box body is arranged on the base, the oil collecting pool is arranged below the rectangular box body, and the oil collecting pool penetrates through the base and is arranged in soil below the base; an audible and visual alarm is arranged outside the rectangular box body, a plurality of heat dissipation assemblies are arranged on a side plate of the rectangular box body in parallel, a smoke alarm, a temperature and humidity sensor and a plurality of nozzles are fixed on the inner side of a top plate of the rectangular box body, a carbon dioxide fire extinguisher communicated with the nozzles is arranged in the rectangular box body, and a controller is also arranged in the rectangular box body; the utility model discloses can pass through carbon dioxide fire extinguisher release carbon dioxide gas is reported to the police through audible-visual annunciator and communication module simultaneously in order to restrain the intensity of a fire, the fluid that power equipment revealed can be collected to the oil catch basin, the oil catch basin still can be collected and the water that gets into prepackage type transformer substation is discharged.

Description

An alarm device for a prefabricated substation

technical field

The utility model relates to the technical field of electric power equipment, in particular to an alarm device for a prefabricated substation.

Background technique

Prefabricated substation, also known as box-type substation or prefabricated substation, is a kind of high-voltage switchgear, distribution transformer and low-voltage power distribution device, which are prefabricated indoor and outdoor compact distribution devices arranged in one according to a certain wiring scheme. Electrical equipment, that is, organically combine functions such as transformer step-down and low-voltage power distribution, and install them in a moisture-proof, rust-proof, dust-proof, rodent-proof, fire-proof, anti-theft, heat-insulating, fully enclosed, and movable steel structure box. It is especially suitable for the construction and transformation of urban network, and it is a brand-new substation emerging after the civil substation.

However, the following disadvantages still exist in the actual use of prefabricated substations: due to the large number of internal electrical equipment in the existing prefabricated substations, excessive internal humidity, leakage, high temperature and even fire may occur after a long time of work, and then Damage to the equipment, and the pre-installed transformer box is mostly a closed structure, and the internal equipment cannot be directly observed. When the initial stage of the dangerous situation occurred, because no staff found it, no one stopped the dangerous situation from expanding, thus endangering the power grid and work. The safety of personnel; and some of the existing prefabricated substations will use oil-immersed transformers, and according to national regulations, oil-filled electrical equipment such as main transformers, electrical equipment with a total oil volume of more than 100kg in the house, and a single outdoor The electrical equipment with an oil volume of more than 1000kg should be equipped with oil storage or oil retaining facilities, the capacity of which is not less than 20% of the oil volume of a single equipment and 60% of the maximum single equipment capacity. Each side is 1m larger, and the general accident oil pool shall have the function of oil-water separation, and its outlet shall be led from a safe place, and shall not cause environmental pollution.

Chinese patent (CN215343370U) discloses a box-type substation with early warning function, which can cool down the substation, and can detect the temperature, humidity and leakage in the substation, and alert maintenance personnel. However, when a fire occurs A box-type substation with an early warning function can only warn the staff, but cannot independently extinguish the fire and suppress the fire to buy time for the staff to deal with the fire, and if the transformer used is an oil-immersed transformer, when the oil-immersed transformer leaks oil , the box-type substation cannot collect oil, which may cause a fire in the substation and cause pollution to the surrounding environment.

Contents of the invention

The purpose of the utility model is to provide an alarm device for a prefabricated substation aiming at the problems existing in the prior art.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

An alarm device for a prefabricated substation, comprising a base, a rectangular box and an oil collection pool, characterized in that: the rectangular box is installed on the base, and the rectangular box is provided with the An oil collection pool, the oil collection pool passes through the base and is arranged in the soil below the base; an audible and visual alarm is arranged outside the rectangular box, and the side plates of the rectangular box are parallel A number of heat dissipation components are provided, a smoke alarm, a temperature and humidity sensor and a number of nozzles are fixed on the inner side of the top plate of the rectangular box, a carbon dioxide fire extinguisher is arranged in the rectangular box, and several nozzles communicate with the carbon dioxide fire extinguisher through pipes , the pipeline is provided with a solenoid valve, the rectangular box is also provided with a control box, the control box is provided with a controller, and the controller is respectively connected with the heat dissipation assembly, the smoke alarm, the The temperature and humidity sensor, the electromagnetic valve and the sound and light alarm are electrically connected.

The utility model is provided with the carbon dioxide fire extinguisher. When the smoke alarm and the temperature and humidity sensor jointly confirm that a fire occurs in the prefabricated substation, the controller will control the carbon dioxide fire extinguisher to release carbon dioxide gas to suppress the fire and At the same time, the sound and light alarm and the communication module give an alarm to buy time for the staff to deal with the fire. When the oil-immersed transformer in the prefabricated substation leaks oil, the oil collection pool can collect the leaked Oil, and when the surrounding area of the prefabricated substation encounters waterlogging and water enters the interior of the prefabricated substation, the oil collection pool can collect and discharge the prefabricated substation from the periphery of the prefabricated substation into the prefabricated substation Substation water.

Preferably, an oil pool cover is provided directly above the oil pool, and a cobblestone layer is arranged on the oil pool cover, an oil-immersed transformer is placed on the cobblestone layer, and the top of the cobblestone layer is lower than On the top surface of the floor of the rectangular box, a number of through holes are opened on the cover plate of the oil pool, and the through holes are used to communicate with the rectangular box and the oil collection pool.

The transformer oil leaked from the oil-immersed transformer is introduced into the oil collection pool through several through holes on the cover plate of the oil pool. When water enters the rectangular box, the through holes on the cover plate of the oil pool The water infiltrated into the rectangular box can also be introduced into the oil collection pool to prevent the accumulated water from damaging the electric equipment. Oil seeps into the oil sump from the cobblestone layer and the oil sump cover.

Preferably, an electronic water gauge is provided along the side wall of the oil collecting tank, the top of the electronic water gauge protrudes from the oil pool cover through the through hole and passes through the cobblestone layer, and the controller and The electronic water gauge is electrically connected, and the distance between the edge of the oil-immersed transformer and the edge of the oil pool cover is not less than 1m.

The electronic water gauge is a digital sensor, which uses the principle of weak conductivity of water, uses a high-quality processor chip as a controller, and obtains data by measuring the water level of the electrode. The electronic water gauge has high precision and anti-interference ability, so the error is generally not affected by environmental factors, but only depends on the electrode spacing, and has the ability to automatically monitor the water level for a long time. The electronic water gauge generally adopts a stainless steel protective shell, which has a higher Reliability, while having the advantages of anti-corrosion, anti-freezing, heat resistance, and aging resistance. The water level in the oil collection tank can be monitored through the electronic water gauge. Since transformer oil has good insulating properties, the electronic water gauge cannot measure transformer oil. The oil level is high or low.

Preferably, a drainage port is provided at the bottom of the oil collection tank, and a drain pipe is connected to the drain port, and an electric valve is installed at the drain port, and the electric valve is electrically connected to the controller, and the drain pipe is used for Water flowing into the sump is drained out of the sump.

Because the density of transformer oil is generally less than that of water, when there is a certain amount of water at the bottom of the oil collecting tank, the leaked transformer oil will be above the water. Since the electronic water gauge cannot measure the liquid level of the transformer oil, when After a transformer oil leakage accident occurs, when oil-water separation is required, the electric valve can be opened to discharge the bottom water from the oil collection tank through the drainage pipe. When the electronic water gauge detects that the water level returns to zero, all the water has been discharged. , but the transformer oil is still in the oil collection tank, at this time, closing the electric valve can complete the oil-water separation, avoiding the leakage of the transformer oil to the outside and polluting the environment.

Preferably, the heat dissipation assembly includes a ventilating fan, a mounting bracket, a sealing plate and a lifting mechanism, the mounting bracket is fixed on the side plate, the ventilating fan is fixed at the front of the mounting bracket, and the rear of the mounting bracket The sealing board is plugged in, the lifting mechanism is connected to and controls the sealing board, and the ventilation fan is electrically connected with the controller.

The ventilation fan can actively dissipate heat from the rectangular box, and when the temperature and humidity sensor detects that the temperature or humidity in the rectangular box is too high, the ventilation fan can be used to reduce the temperature or humidity in the rectangular box.

Preferably, the lifting mechanism includes a reel, a lifting rod and a motor, the reel is suspended under the top plate, the lifting rod is suspended under the reel through a lifting rope, and the motor is installed under the top plate And connect one end of the reel, the motor is electrically connected with the controller; the lifting rod is used to connect several sealing inserts.

The sealing plate is lifted up and down controlled by the motor, and when the ventilation fan needs to be turned on, the motor drives the reel to rotate, and the reel rotates to shorten the lifting rope, and the lifting rope pulls the lifting rod When it is necessary to close the ventilation fan, in order to prevent foreign objects, small animals or rainwater from entering the rectangular box, the motor drives the reel to rotate to release the ventilation fan. The lifting rope, so that the sealing plate blocks the gap left by the ventilation fan; when the rectangular box catches fire and needs to open the carbon dioxide fire extinguisher to extinguish the fire, it is also necessary to control the sealing plate to block the ventilation fan The remaining gap prevents outside oxygen from entering the rectangular box to support combustion while ensuring the concentration of carbon dioxide gas.

Preferably, a communication module is provided in the control box, and the communication module is used to upload the signal collected by the controller to the remote terminal.

The communication module can send the data collected by the controller from the smoke alarm, the temperature and humidity sensor and the electronic water gauge to a remote terminal, and when the data is abnormal, the controller passes the communication module Alarming the remote terminal.

Compared with the prior art, the beneficial effects of the utility model are:

(1) The utility model is equipped with a carbon dioxide fire extinguisher. When the smoke alarm and the temperature and humidity sensor jointly confirm a fire in the prefabricated substation, the controller will control the carbon dioxide fire extinguisher to release carbon dioxide gas to suppress the fire and at the same time pass the sound The light alarm and the communication module give an alarm to buy time for the staff to deal with the fire.

(2) The utility model is equipped with an oil collection pool, which can collect the leaked oil when the oil-immersed transformer in the prefabricated substation leaks oil, and when the surrounding area of the prefabricated substation encounters waterlogging, the prefabricated substation When water enters the prefabricated substation, the oil collecting tank can collect and discharge the water entering the prefabricated substation from the periphery of the prefabricated substation.

Description of drawings

Fig. 1 is the structural representation of the front of the utility model;

Fig. 2 is the structural representation of the back of the utility model;

Fig. 3 is the internal structural representation of the utility model;

Fig. 4 is a structural schematic diagram of the combination of the ventilation fan, the mounting bracket, the sealing plate and the lifting rod in the utility model;

In the figure: 1, base; 2, rectangular box; 201, ventilation fan; 202, installation bracket; 203, sealing plate; 204, reel; 302, cobblestone layer; 303, electronic water gauge; 4, smoke alarm; 5, temperature and humidity sensor; 6, carbon dioxide fire extinguisher; 7, sound and light alarm; 8, control box; 9, drainage pipe.

detailed description

The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the orientations or positional relationships indicated by the terms "middle", "upper", "lower", "left", "right", "inner" and "outer" are based on The orientation or positional relationship shown in the accompanying drawings is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood To limit the utility model.

As shown in Figures 1 to 4, an alarm device for a prefabricated substation includes a base 1, a rectangular box 2 and an oil collection pool 3, the rectangular box 2 is installed on the base 1, and the rectangular box 2 below An oil collection pool 3 is provided, and the oil collection pool 3 passes through the base 1 and is arranged in the soil below the base 1; an audible and visual alarm 7 is arranged outside the rectangular box body 2, and the side panels of the rectangular box body 2 are arranged in parallel There are a number of heat dissipation components, a smoke alarm 4, a temperature and humidity sensor 5 and a number of nozzles are fixed on the inner side of the top plate of the rectangular box 2, a carbon dioxide fire extinguisher 6 is arranged inside the rectangular box 2, and several nozzles communicate with the carbon dioxide fire extinguisher 6 through pipes, and the pipes A solenoid valve is arranged on the top, and a control box 8 is also arranged in the rectangular box body 2, and a controller is arranged in the control box 8, and the controller is connected with the heat dissipation component, the smoke alarm 4, the temperature and humidity sensor 5, the solenoid valve and the sound and light alarm respectively. device 7 is electrically connected.

Specifically, the controller is a PLC controller.

Specifically, the oil collection pool 3 can adapt to different oil-immersed transformers by changing its depth to change its own volume, ensuring that the volume of the oil collection pool 3 is greater than the total oil volume of the oil-immersed transformer.

Specifically, an oil pool cover plate 301 is provided directly above the oil pool 3, and a pebble layer 302 is arranged on the oil pool cover plate 301. An oil-immersed transformer is placed on the pebble layer 302, and the top of the pebble layer 302 is lower than the rectangular box. On the top surface of the floor of the body 2, the oil pool cover plate 301 has some through holes. The size of any pebbles in the cobblestone layer 302 all exceeds the diameter of the through holes.

Specifically, an electronic water gauge 303 is provided along the side wall of the oil collecting tank 3, and the top of the electronic water gauge 303 extends out of the oil pool cover plate 301 through a through hole and passes through the cobblestone layer 302, and the controller is electrically connected with the electronic water gauge 303, The distance between the edge of the oil-immersed transformer and the edge of the oil pool cover 301 is not less than 1m.

Specifically, a drain is provided at the bottom of the oil collection tank 3, and a drainage pipe 9 is connected outside the drain, and an electric valve is installed at the drain, and the electric valve is electrically connected with the controller. Oil sump 3.

Specifically, when the oil-immersed transformer is working normally, there is a certain amount of water at the bottom of the oil collecting pool 3, which is used to cool the oil and protect the electronic water gauge 303 when the oil-immersed transformer leaks oil.

Specifically, the heat dissipation assembly includes a ventilating fan 201, a mounting bracket 202, a sealing plate 203 and a lifting mechanism, the mounting bracket 202 is fixed on the side plate, the ventilating fan 201 is fixed on the front of the mounting bracket 202, and the rear part of the mounting bracket 202 is inserted through a slot There is a sealing board 203, the lifting mechanism is connected to and controls the sealing board 203, and the ventilation fan 201 is electrically connected with the controller.

Specifically, the lifting mechanism includes a reel 204, a lifting rod 205 and a motor. The reel 204 is suspended under the top plate, and the lifting rod 205 is suspended below the reel 204 by two parallel lifting ropes. At one end, the motor is electrically connected to the controller; the lifting rod 205 is used to connect several sealing plates 203 .

Specifically, the reel 204 is composed of an external housing and an internal shaft body. The housing is suspended under the roof. Connection, the motor is fixed with the shell or the top plate, and there is a rope hole under the shell, and the ends of the two lifting ropes pass through the rope holes and are respectively fixed on both sides of the shaft. When the shaft rotates clockwise, the lifting rope It will be wound on the shaft body, and the lifting rope will fall from the shaft body when the shaft body rotates counterclockwise.

Specifically, no matter whether the sealing insert 203 is raised or lowered, it will never completely break away from the slot, so that the slot can always guide the seal insert 203 .

Specifically, a communication module is provided in the control box 8, and the communication module is used to upload the signals collected by the control box 8 to the remote terminal.

Specifically, the working principle of an alarm device in a prefabricated substation under different circumstances is as follows:

(1) When the temperature and humidity sensor 5 detects that the temperature rises in the rectangular box 2 and requires heat dissipation or the humidity rises and requires dehumidification and ventilation, the controller will control the motor to pull up the sealing plate 203 and control the ventilation fan 201 to open. When the temperature or When the humidity rises to the set threshold, the controller will turn on the sound and light alarm 7 to warn people around the prefabricated substation, and at the same time, the controller will send an alarm to the remote terminal through the communication module.

(2) When the temperature and humidity sensor 5 monitors that the temperature in the rectangular box 2 is too high or the smoke alarm 4 detects smoke in the rectangular box 2, the controller controls the solenoid valve to open to release carbon dioxide gas, and controls the motor to put down the sealing plate 203. Turn off the ventilation fan 201 and the controller will turn on the sound and light alarm 7 to warn the people around the prefabricated substation, and at the same time the controller will send an alarm to the remote terminal through the communication module.

(3) When the electronic water gauge 303 detects that the liquid level in the oil collection tank 3 has risen to more than half of the range of the electronic water gauge 303, the controller will control the electric valve to open to reduce the liquid level, and at the same time, the controller will communicate to the remote terminal through the communication module Alarm, if the electronic water gauge 303 monitors that the liquid level in the oil collection tank 3 continues to rise and exceeds two-thirds of the range of the electronic water gauge 303, the controller will turn on the sound and light alarm 7 to warn the people around the prefabricated substation, In order to prevent the accumulation of water in the rectangular box 2 from causing the short circuit of the electrical equipment and causing accidents.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (7)

1. The utility model provides an alarm device of prepackage type transformer substation, includes base, rectangle box and oil catch basin, its characterized in that: the rectangular box body is arranged on the base, the oil collecting pool is arranged below the rectangular box body, and the oil collecting pool penetrates through the base and is arranged in soil below the base; be provided with audible-visual annunciator outside the rectangle box, the parallel arrangement has a plurality of radiator unit on the curb plate of rectangle box, be fixed with smoke alarm, temperature and humidity sensor and a plurality of shower nozzle on the roof inboard of rectangle box, be provided with the carbon dioxide fire extinguisher in the rectangle box, it is a plurality of the shower nozzle pass through the pipeline with the carbon dioxide fire extinguisher intercommunication, be provided with the solenoid valve on the pipeline, still be provided with the control box in the rectangle box, be equipped with the controller in the control box, the controller respectively with radiator unit smoke alarm the temperature and humidity sensor the solenoid valve with the audible-visual annunciator electricity is connected.

2. The warning device of a preassembled transformer substation of claim 1, characterized in that: an oil pool cover plate is arranged at a position right above the oil collecting pool, a cobble layer is arranged on the oil pool cover plate, an oil immersed transformer is placed on the cobble layer, the top of the cobble layer is lower than the top surface of the floor of the rectangular box body, a plurality of through holes are formed in the oil pool cover plate and are used for communicating the rectangular box body with the oil collecting pool.

3. The warning device of a preassembled transformer substation of claim 2, characterized in that: an electronic water gauge is arranged along the side wall of the oil collecting pool, the top end of the electronic water gauge extends out of the oil pool cover plate through the through hole and penetrates through the cobble layer, the controller is electrically connected with the electronic water gauge, and the distance between the edge of the oil-immersed transformer and the edge of the oil pool cover plate is not less than 1m.

4. The warning device of a preassembled transformer substation of claim 1, characterized in that: the oil collecting tank is characterized in that a water outlet is formed in the bottom of the oil collecting tank, a drainage pipeline is connected to the outside of the water outlet, an electric valve is installed in the water outlet and electrically connected with the controller, and the drainage pipeline is used for draining water flowing into the oil collecting tank out of the oil collecting tank.

5. The warning device of a preassembled transformer substation of claim 1, characterized in that: the heat dissipation assembly comprises a ventilator, a mounting support, a sealing insertion plate and a lifting mechanism, the mounting support is fixed to the side plate, the ventilator is fixed to the front portion of the mounting support, the sealing insertion plate is inserted into the rear portion of the mounting support, the lifting mechanism is connected with and controls the sealing insertion plate, and the ventilator is electrically connected with the controller.

6. The warning device of a preassembled transformer substation of claim 5, characterized in that: the lifting mechanism comprises a scroll, a lifting rod and a motor, the scroll is hung below the top plate, the lifting rod is hung below the scroll through a lifting rope, the motor is installed below the top plate and connected with one end of the scroll, and the motor is electrically connected with the controller; the lifting rod is used for connecting a plurality of the sealing insertion plates.

7. The warning device of a preassembled transformer substation of claim 1, characterized in that: and a communication module is arranged in the control box and used for uploading the signals collected by the controller to a remote terminal.

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