CN111508690A

CN111508690A - Safety protection system of power transformer for transformer substation

Info

Publication number: CN111508690A
Application number: CN202010337112.1A
Authority: CN
Inventors: 余良
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-08-07

Abstract

The invention discloses a safety protection system of a power transformer for a transformer substation, which comprises an installation box, wherein an installation chamber is arranged in the installation box, a transformer body is arranged at the inner bottom of the installation chamber, a heat insulation box is arranged on one side of the installation box, a liquid storage chamber is arranged in the heat insulation box, and a liquid inlet communicated with the outside is formed in the upper end of the liquid storage chamber; siphon mechanism, siphon mechanism is including setting up the siphon in install bin one side, the one end of siphon extends to the interior bottom of installation room, the other end of siphon is located the inlet directly over, the siphon comprises two standpipes and a semicircular pipe, is located the right side be equipped with in the standpipe and be used for gliding piston block from top to bottom, be equipped with square chamber in the piston block. When an electrical fire disaster occurs near the transformer installation box, the monitoring device can timely pump away the cooling oil in the transformer installation box and send out an alarm, so that nearby workers can timely respond, and the harm caused by the electrical fire disaster is greatly reduced.

Description

Safety protection system of power transformer for transformer substation

Technical Field

The invention relates to the field of power distribution networks, in particular to a safety protection system of a power transformer for a transformer substation.

Background

The distribution network is a power network which receives electric energy from a transmission network or a regional power plant and distributes the electric energy to various users on site through distribution facilities or step by step according to voltage, in the process of the distribution network, a transformer plays an important part, and in order to install the transformer, the transformer is generally installed in an oil-immersed mode, namely the transformer is placed in an installation box, and then cooling oil is poured into the installation box;

however, these cooling oils are also one kind of petroleum, and have extremely strong combustion-supporting property, and if short-circuit combustion occurs in other electrical components near the installation box of the transformer, the cooling oil inside the transformer is likely to be a product of spreading fire, so that when an electrical fire occurs near the transformer, the cooling oil inside the installation box of the transformer is pumped away, and an alarm is given at the same time, which is a problem that we need to solve.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a safety protection system of a power transformer for a transformer substation.

In order to achieve the purpose, the invention adopts the following technical scheme:

a safety protection system of a power transformer for a transformer substation comprises an installation box, wherein an installation chamber is arranged inside the installation box, a transformer body is installed at the inner bottom of the installation chamber, a heat insulation box is installed on one side of the installation box, a liquid storage chamber is arranged in the heat insulation box, and a liquid inlet communicated with the outside is formed in the upper end of the liquid storage chamber; the siphon mechanism comprises a siphon arranged on one side of the installation box, one end of the siphon extends to the inner bottom of the installation chamber, the other end of the siphon is positioned right above the liquid inlet, the siphon consists of two vertical pipes and a semi-annular pipe, a piston block which is used for sliding up and down is arranged in the vertical pipe on the right side, a square cavity is arranged in the piston block, a first rotating rod is rotatably connected between the front inner wall and the rear inner wall of the square cavity, a gear and a magnetic block are fixedly sleeved on the first rotating rod, a sliding rod is vertically arranged in the square cavity, a rack is connected on the sliding rod in a penetrating and sliding manner, the rack is meshed with the gear, the upper end of the rack is connected with the inner top of the square cavity through a memory metal wire, one end of the siphon above the liquid inlet is horn-shaped, and a magnetic ring is fixedly connected on, the same poles of the adjacent surfaces of the magnetic ring and the magnetic block repel each other; the sealing mechanism comprises a second rotating rod which is connected on the inner wall of the liquid inlet in a front-back rotating manner, an impeller is fixedly connected on the second rotating rod, a cam is fixedly connected on the second rotating rod, first sliding grooves are respectively arranged on two sides of the liquid inlet, sliding blocks used for sliding left and right are respectively arranged in the two first sliding grooves, round-head abutting rods matched with the cam are respectively and fixedly connected on opposite sides of the two sliding blocks, one sides of the two sliding blocks, far away from the round-head abutting rods, are respectively and elastically connected with the inner wall of the first sliding grooves through two connecting springs, second sliding grooves are respectively arranged on two sides of the liquid inlet, sliding plates used for sliding left and right are respectively arranged in the two second sliding grooves, the two first sliding grooves are respectively communicated with the outside through two air inlet pipes, and the two first sliding grooves are respectively communicated with the corresponding second sliding grooves through two, and one-way valves are respectively arranged in the two air inlet pipes and the two air outlet pipes.

Preferably, the piston block is cylindrical, and the inner diameter of the magnetic ring is larger than the diameter of a transverse circle of the piston block.

Preferably, the vertical montant that is equipped with in the stock solution room, be equipped with on the montant and be used for gliding floating block from top to bottom, the upper end fixedly connected with electric connection block of floating block, the interior top of stock solution room is equipped with the slot, the both sides inner wall of slot all is equipped with the electric connection piece with electric connection block matched with.

Compared with the prior art, the invention has the beneficial effects that:

1. when an electrical fire occurs, the temperature near the installation box can rise, when the abnormal temperature of the memory metal wire is reached, the memory metal wire can be changed into a spiral shape from a strip shape, the overall length can be shortened, at the moment, the memory metal wire can pull the rack to move upwards, the rack can drive the gear to rotate, the rotation of the gear can drive the magnetic block to rotate, so that the magnetic block can complete the turnover, at the moment, the magnetic block and the adjacent surface of the magnetic ring attract each other in an opposite way, the friction resistance received by the whole piston block is smaller than the sum of the self gravity and the suction force of the magnetic ring, the piston block moves downwards, the cooling oil in the installation chamber can be pumped into the siphon tube by the downward movement of the piston block, and the siphon tube can reach the condition; the piston piece at this moment moves down to the bottommost, because the bore of the bottommost of siphon is loudspeaker form, and the piston piece just can not receive the inner wall frictional resistance of siphon this moment, only receive self gravity, and the appeal of magnetic ring is less than the gravity of self, then the piston piece is along with the action of gravity, fall into the stock solution room through the inlet, owing to reached the condition of siphon effect, so the coolant oil in the installation room can fall down along with the quick standpipe from the right side of siphon effect, and enter into the stock solution room through the inlet, can be timely transfer the coolant oil, the intensity of a fire that avoids leading to spreads.

2. When the cooling oil passes through the inlet, can drive impeller anticlockwise rotation, the rotation of impeller drives the cam and rotates, because two button heads support the pole and all receive coupling spring's elastic action, it offsets with the cam, so the rotation of cam can drive two button heads and support the pole and remove about, thereby it removes about to drive two sliders, use the slider on right side as an example, when the slider moves left, can be with external gas suction to first spout be located the space on slider right side, when the slider right side, can be arranged the gas in the first spout into the space that the second spout is located the sliding plate right side, at this moment the sliding plate can move left, and in the same way, the sliding plate that is located the top can move right, seal the inlet until two sliding plates, double-deck confined effect has been reached, the confined effect is better.

3. When falling into the coolant oil in the stock solution room, the floating block receives the effect of buoyancy and can shifts up, when the coolant oil is complete to fall into the stock solution room, the floating block removes topmost, the electric connection piece at this moment inserts in the slot, make the circuit switch on, bee calling organ this moment can send the police dispatch newspaper, remind near staff, because siphon effect makes the coolant oil all fall into the speed in the stock solution room faster, so the speed of bee calling organ warning is also faster, make the staff can carry out timely processing to the conflagration, reduce the harm that the conflagration produced to minimumly.

Drawings

Fig. 1 is a schematic structural diagram of a safety protection system of a power transformer for a substation according to the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

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

FIG. 4 is a schematic view of example 2;

fig. 5 is an enlarged view of fig. 4 at C.

In the figure: the transformer comprises an installation box 1, a thermal insulation box 2, an installation chamber 3, a transformer body 4, a siphon 5, a liquid storage chamber 6, a piston block 7, a sliding rod 8, a square cavity 9, a magnetic block 10, a rack 11, a memory metal wire 12, a gear 13, a first rotating rod 14, a magnetic ring 15, an air inlet pipe 16, an air outlet pipe 17, a sliding plate 18, a second sliding chute 19, a first sliding chute 20, a sliding block 21, a round-head abutting rod 22, a connecting spring 23, a cam 24, an impeller 25, a liquid inlet 26, a second rotating rod 27, a vertical rod 28, a floating block 29, a buzzer 30, an electrical connection block 31, a slot 32 and an external power supply 33.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1 to 3, a safety protection system of a power transformer for a substation includes:

the transformer comprises an installation box 1, wherein an installation chamber 3 is arranged in the installation box 1, a transformer body 4 is arranged at the inner bottom of the installation chamber 3, a heat insulation box 2 is arranged on one side of the installation box 1, the heat insulation box 2 is made of a heat insulation material with strong fire resistance, a liquid storage chamber 6 is arranged in the heat insulation box 2, and a liquid inlet 26 communicated with the outside is formed in the upper end of the liquid storage chamber 6;

the siphon mechanism comprises a siphon pipe 5 arranged on one side of an installation box 1, one end of the siphon pipe 5 extends to the inner bottom of an installation chamber 3, the other end of the siphon pipe 5 is positioned right above a liquid inlet 26, the siphon pipe 5 consists of two vertical pipes and a semi-annular pipe, a piston block 7 which is positioned on the right side is provided with a piston block 7 and can slide up and down, a square cavity 9 is arranged in the piston block 7, a first rotating rod 14 is rotatably connected between the front inner wall and the rear inner wall of the square cavity 9, a gear 13 and a magnetic block 10 are fixedly sleeved on the first rotating rod 14, a slide rod 8 is vertically arranged in the square cavity 9, a rack 11 is connected on the slide rod 8 in a penetrating and sliding manner, the rack 11 is meshed with the gear 13, the upper end of the rack 11 is connected with the inner top of the square cavity 9 through a memory metal wire 12, the end of the siphon pipe 5, which, the adjacent surfaces of the magnetic ring 15 and the magnetic block 10 have the same polarity and repel each other;

the sealing mechanism comprises a second rotating rod 27 which is connected with the inner wall of a liquid inlet 26 in a front-back rotating manner, an impeller 25 is fixedly connected onto the second rotating rod 27, a cam 24 is fixedly connected onto the second rotating rod 27, first sliding grooves 20 are respectively arranged on two sides of the liquid inlet 26, sliding blocks 21 used for sliding left and right are respectively arranged in the two first sliding grooves 20, round-head abutting rods 22 matched with the cam 24 are respectively fixedly connected onto opposite sides of the two sliding blocks 21, one sides of the two sliding blocks 21 far away from the round-head abutting rods 22 are respectively and elastically connected with the inner wall of the first sliding grooves 20 through two connecting springs 23, second sliding grooves 19 are respectively arranged on two sides of the liquid inlet 26, sliding plates 18 used for sliding left and right are respectively arranged in the two second sliding grooves 19, the two sliding plates 18 are made of heat insulation materials with strong fire resistance, the two second sliding grooves 19 are arranged as shown in figure 3, namely, the left second sliding groove 19 is, and second spout 19 on right side is located the below of first spout 20 on right side, and two first spouts 20 communicate with the external world through two intake pipe 16 respectively, and two first spouts 20 communicate with corresponding second spout 19 through two outlet duct 17 respectively, all install the check valve in two intake pipe 16 and two outlet duct 17, guarantee that intake pipe 16 admits air, outlet duct 17 gives vent to anger.

Wherein, the piston block 7 is cylindric, and the internal diameter of magnetic ring 15 is greater than the diameter of piston block 7 transect circle, when the piston block 7 falls into the bottom, can receive the effect of gravity to continue to move down.

When the magnetic block is used, the magnetic block 10 in the initial state is subjected to the repulsive force of the magnetic ring 15, under the action of the gravity of the magnetic block and the friction force of the magnetic block and the siphon 5, the magnetic block is stressed in balance and kept still, and the liquid level of the siphon 5 is shown in figure 5;

when an electrical fire occurs, the temperature near the installation box 1 can rise, when the abnormal temperature of the memory metal wire 12 is reached, the memory metal wire 12 can be changed into a spiral shape from a strip shape, the total length can be shortened, at the moment, the memory metal wire 12 can pull the rack 11 to move upwards, the rack 11 can drive the gear 13 to rotate, the gear 13 can drive the magnetic block 10 to rotate, so that the magnetic block 10 can complete turnover, at the moment, the adjacent surfaces of the magnetic block 10 and the magnetic ring 15 are attracted in an opposite manner, the whole piston block 7 receives the resultant force of friction resistance smaller than the gravity of the whole piston block 7 and the attraction of the magnetic ring 15, the piston block 7 moves downwards, the cooling oil in the installation chamber 3 can be pumped into the siphon pipe 5 by the downward movement of the piston block 7, and the siphon pipe 5 can reach the condition of siphon action along with the;

at this moment, the piston block 7 moves downwards to the bottommost end, because the bore of the bottommost end of the siphon tube 5 is in a horn shape, the piston block 7 cannot be subjected to the inner wall friction resistance of the siphon tube 5 at this moment, only receives the self gravity and the attraction of the magnetic ring 15, the attraction of the magnetic ring 15 is smaller than the self gravity, the piston block 7 falls into the liquid storage chamber 6 through the liquid inlet 26 along with the action of the gravity, because the siphon action condition is achieved, the cooling oil in the installation chamber 3 can quickly fall from the vertical pipe on the right side along with the siphon action and enters the liquid storage chamber 6 through the liquid inlet 26, when the cooling oil passes through the liquid inlet 26, the impeller 25 can be driven to rotate anticlockwise, the rotation of the impeller 25 drives the cam 24 to rotate, because the two round-head support rods 22 are both subjected to the elastic action of the connecting spring 23 and abut against the cam 24, the rotation of the cam 24 can drive the two round-head support, thereby driving the two sliding blocks 21 to move left and right, taking the right sliding block 21 as an example, when the sliding block 21 moves left, external air is pumped into the space of the first sliding chute 20 on the right side of the sliding block 21, when the sliding block 21 moves right, air in the first sliding chute 20 is discharged into the space of the second sliding chute 19 on the right side of the sliding plate 18, at this time, the sliding plate 18 moves left, and in the same way, the sliding plate 18 above moves right until the two sliding plates 18 close the liquid inlet 26;

it is worth mentioning that the speed of the cooling oil falling into the liquid storage chamber 6 is high due to the siphon effect, so that after the cooling oil falls off, the two sliding plates 18 do not move to the state of closing the liquid inlet 26, but the impeller 25 can continue to rotate under the action of inertia until the two sliding plates 28 close the liquid inlet 26, the double-layer closing effect is achieved, and the closing effect is better.

Example 2

Referring to fig. 4-5, the difference between this embodiment and embodiment 1 is that a vertical rod 28 is vertically disposed in the liquid storage chamber 6, a floating block 29 for sliding up and down is disposed on the vertical rod 28, an electrical connection block 31 is fixedly connected to an upper end of the floating block 29, a slot 32 is disposed at an inner top of the liquid storage chamber 6, and electrical connection pieces matched with the electrical connection block 31 are disposed on inner walls of two sides of the slot 32.

In this embodiment, when falling into the coolant oil in stock solution room 6, buoyancy 29 receives the effect of buoyancy and can shifts up, when the coolant oil is complete to fall into stock solution room 6, buoyancy 29 removes topmost, electric connection block 31 at this moment inserts in slot 32, make the circuit switch on, bee calling organ 30 at this moment can send out the police dispatch newspaper, remind near staff, because the siphon makes the speed that the coolant oil is whole to fall into in stock solution room 6 very fast, so the speed of bee calling organ 30 police dispatch newspaper is also very fast, make the staff can carry out timely processing to the conflagration, reduce the harm that the conflagration produced to minimumly.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A safety protection system of a power transformer for a transformer substation is characterized by comprising:

the transformer comprises an installation box (1), wherein an installation chamber (3) is arranged inside the installation box (1), a transformer body (4) is arranged at the inner bottom of the installation chamber (3), a heat insulation box (2) is arranged on one side of the installation box (1), a liquid storage chamber (6) is arranged in the heat insulation box (2), and a liquid inlet (26) communicated with the outside is formed in the upper end of the liquid storage chamber (6);

siphon mechanism, siphon mechanism is including setting up siphon (5) in install bin (1) one side, the one end of siphon (5) extends to the interior bottom of installation room (3), the other end of siphon (5) is located inlet (26) directly over, siphon (5) comprise two standpipes and a semicircular pipe, are located the right side be equipped with in the standpipe and be used for gliding piston piece (7) from top to bottom, be equipped with square chamber (9) in piston piece (7), it is connected with first pivot pole (14) to rotate between the front and back inner wall of square chamber (9), fixed cover on first pivot pole (14) has been connected with gear (13) and magnetic path (10), vertically in square chamber (9) slide bar (8) is equipped with, it has rack (11) to run through sliding connection on slide bar (8), rack (11) and gear (13) meshing, the upper end of the rack (11) is connected with the inner top of the square cavity (9) through a memory metal wire (12), one end of the siphon (5) above the liquid inlet (26) is in a horn shape, the inner wall of one end of the siphon (5) above the liquid inlet (26) is fixedly connected with a magnetic ring (15), and the adjacent surfaces of the magnetic ring (15) and the magnetic block (10) are in like-pole repulsion;

the sealing mechanism comprises a second rotating rod (27) which is connected to the inner wall of a liquid inlet (26) in a front-back rotating mode, an impeller (25) is fixedly connected to the second rotating rod (27), a cam (24) is fixedly connected to the second rotating rod (27), first sliding grooves (20) are formed in the two sides of the liquid inlet (26), two sliding blocks (21) used for sliding left and right are arranged in the first sliding grooves (20), round-head abutting rods (22) matched with the cam (24) are fixedly connected to the opposite sides of the two sliding blocks (21), one sides, far away from the round-head abutting rods (22), of the two sliding blocks (21) are respectively and elastically connected with the inner wall of the first sliding grooves (20) through two connecting springs (23), second sliding grooves (19) are formed in the two sides of the liquid inlet (26), sliding plates (18) used for sliding left and right are arranged in the second sliding grooves (19), two first spout (20) communicate with the external world through two intake pipe (16) respectively, two first spout (20) communicate with corresponding second spout (19) through two outlet duct (17) respectively, all install the check valve in two intake pipe (16) and two outlet duct (17).

2. The safety protection system of a power transformer for a substation according to claim 1, characterized in that the piston block (7) is cylindrical, and the inner diameter of the magnetic ring (15) is larger than the diameter of the piston block (7) transverse circle.

3. The safety protection system of the power transformer for the transformer substation according to claim 1, wherein a vertical rod (28) is vertically arranged in the liquid storage chamber (6), a floating block (29) which can slide up and down is arranged on the vertical rod (28), an electrical connection block (31) is fixedly connected to the upper end of the floating block (29), a slot (32) is arranged at the inner top of the liquid storage chamber (6), and electrical connection sheets matched with the electrical connection block (31) are arranged on inner walls of two sides of the slot (32).