CN212730768U

CN212730768U - Oil-discharging nitrogen-injecting fire extinguishing device for transformer

Info

Publication number: CN212730768U
Application number: CN202021135849.7U
Authority: CN
Inventors: 袁军甫
Original assignee: Hebei Wenhui Electrical Equipment Manufacturing Co ltd
Current assignee: Hebei Wenhui Electrical Equipment Manufacturing Co ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-03-19
Anticipated expiration: 2030-06-18

Abstract

The utility model discloses a nitrogen extinguishing device is annotated in transformer oil extraction, including support column and connecting pipe, the top of support column is fixed with the cabinet body, the top of tray is provided with the nitrogen cylinder, the connecting pipe is located the top of nitrogen cylinder, discharge valve's top is connected with the blast pipe, the mid-mounting of inhaling oil pipe has the ooff valve, the lower extreme of inhaling oil pipe is provided with the pond lid, the inboard arrangement in accident oil pond has the oil pump, the inboard of buckle is fixed with back oil pipe, the top of the cabinet body is fixed with rings, the cabinet door is installed in the place ahead of the cabinet body. This nitrogen extinguishing device is annotated to transformer oil extraction compares with current ordinary oil extraction nitrogen extinguishing device, has the structure of preventing the maloperation, prevents this oil extraction nitrogen extinguishing device maloperation oil extraction, fixes the nitrogen cylinder at the cabinet internally through preceding fixed plate and after-fixing board, prevents that the nitrogen cylinder from rocking, and the influence nitrogen cylinder is annotated nitrogen, arranges the oil in the accident oil pool back to the transformer in, resources are saved.

Description

Oil-discharging nitrogen-injecting fire extinguishing device for transformer

Technical Field

The utility model relates to a transformer technical field specifically is a nitrogen extinguishing device is annotated to transformer oil extraction.

Background

The transformer nitrogen-filled fire extinguishing device is a fire extinguishing device for large oil-immersed power transformers with the capacity of more than 2MVA in power plants and transformer substations, and is called an oil-discharging nitrogen-filled fire preventing and extinguishing device.

General oil extraction nitrogen injection extinguishing device, easy maloperation oil extraction, and the fixed not firm enough of nitrogen cylinder, easy production is rocked, and fluid does not retrieve, and the resource-wasting can not be fine satisfies people's user demand, to above-mentioned condition, carries out technical innovation on current oil extraction nitrogen injection extinguishing device basis.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a nitrogen extinguishing device is annotated to transformer oil extraction to provide general oil extraction and annotate nitrogen extinguishing device in solving above-mentioned background art, the easy maloperation oil extraction, and the fixed not firm enough of nitrogen cylinder, the easy production is rocked, and fluid does not retrieve, extravagant resource, can not be fine satisfies people's user demand problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a transformer oil extraction nitrogen injection extinguishing device, includes support column and connecting pipe, the top of support column is fixed with the cabinet body, and the inboard of the cabinet body is provided with the tray, the top of tray is provided with the nitrogen cylinder, and the mid-mounting of nitrogen cylinder has fixed knot to construct, the connecting pipe is located the top of nitrogen cylinder, and the top of connecting pipe installs discharge valve, discharge valve's top is connected with the blast pipe, and the right side of blast pipe installs the oil absorption pipe, the mid-mounting of oil absorption pipe has the ooff valve, and the front end of oil absorption pipe is provided with the oil leak window, the lower extreme of oil absorption pipe is provided with the pool lid, and the below of pool lid is provided with the accident oil pool, the inboard of accident oil pool is settled there is the oil pump, and the place ahead of oil pump is provided with the buckle, the inboard of buckle is fixed with back oil, the cabinet door is installed in the place ahead of the cabinet body, and the place ahead of cabinet door is provided with the lock, the top of lock is provided with the observation window, and the hinge is installed in the left side of observation window.

Preferably, fixed knot constructs including front fixed plate, after-fixing board, draw-in groove, connector, pivot and connecting seat, the draw-in groove has been seted up to the rear end of front fixed plate, and the rear of front fixed plate is provided with the after-fixing board, the left end of front fixed plate is fixed with the connector, and the outside of connector is provided with the connecting seat, the middle part of connecting seat runs through there is the pivot.

Preferably, the front fixing plate forms a rotating structure with the cabinet body through the rotating shaft, and the rear surface of the front fixing plate is attached to the front surface of the rear fixing plate.

Preferably, the ooff valve includes casing, first control valve, second control valve and switch floodgate, the internally mounted of casing has first control valve, and the right side of first control valve is provided with the second control valve, the top of first control valve is provided with the switch floodgate.

Preferably, the switch floodgate constitutes revolution mechanic through the pivot, and the lower surface of switch floodgate laminates with the surface of first control valve mutually.

Preferably, the oil return pipe is connected with the oil pump through a buckle, and the oil return pipe is fixedly connected with the one-way valve.

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

1. the utility model discloses a tray, preceding fixed plate, after-fixing board, draw-in groove, connector, pivot and connecting seat set up, conveniently fix the nitrogen cylinder, prevent that the nitrogen cylinder from rocking, influence the nitrogen cylinder and annotate nitrogen, open preceding fixed plate round the pivot, place the nitrogen cylinder on the tray, fix a position the nitrogen cylinder through the draw-in groove on the after-fixing board, rotate preceding fixed plate again, press from both sides the nitrogen cylinder tightly, through bolt and nut, lock preceding fixed plate and after-fixing board, fix the nitrogen cylinder;

2. the utility model discloses a setting of inhaling oil pipe, casing, first control valve, second control valve and switch floodgate prevents the switch valve maloperation for the switch valve is opened, and oil in the transformer leaks, influences the normal work of transformer, and first control valve and second control valve restrict the switch floodgate in the top of first control valve and second control valve, and the switch valve closes, only when first control valve and second control valve shrink, the switch floodgate falls, makes the switch valve open, inhales oil pipe beginning to inhale;

3. the utility model discloses a check valve, return oil pipe, pond lid, oil pump, buckle and accident oil pool's setting will inhale the oil pipe and arrange the oil of going into in the accident oil pool and retrieve, resources are saved, the oil cooling back in the accident oil pool, during the oil pump will be oily through return oil pipe transport return transformer, prevent the oil reflux in the transformer through the check valve, and through the pond lid, prevent that oil from volatilizing.

Drawings

FIG. 1 is a schematic view of a front view half-section structure of the present invention;

fig. 2 is a schematic view of the cabinet body of the present invention;

FIG. 3 is a schematic view of the fixing structure of the present invention;

fig. 4 is a schematic structural diagram of the switching valve of the present invention.

In the figure: 1. a support pillar; 2. a cabinet body; 3. a tray; 4. a nitrogen gas cylinder; 5. a fixed structure; 501. a front fixing plate; 502. a rear fixing plate; 503. a card slot; 504. a connector; 505. a rotating shaft; 506. a connecting seat; 6. a connecting pipe; 7. an exhaust valve; 8. a hoisting ring; 9. an exhaust pipe; 10. an oil suction pipe; 11. an on-off valve; 1101. a housing; 1102. a first control valve; 1103. a second control valve; 1104. switching on and off; 12. An oil leakage window; 13. a one-way valve; 14. an oil return pipe; 15. a pool cover; 16. an oil pump; 17. buckling; 18. An accident oil pool; 19. a cabinet door; 20. a door lock; 21. an observation window; 22. and (7) a hinge.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a transformer oil extraction nitrogen injection extinguishing device, including support column 1 and connecting pipe 6, the top of support column 1 is fixed with the cabinet body 2, and the inboard of the cabinet body 2 is provided with tray 3, the top of tray 3 is provided with nitrogen cylinder 4, and the mid-mounting of nitrogen cylinder 4 has fixed knot to construct 5, fixed knot constructs 5 and includes preceding fixed plate 501, after-fixing plate 502, draw-in groove 503, connector 504, pivot 505 and connecting seat 506, draw-in groove 503 has been seted up to the rear end of preceding fixed plate 501, and the rear of preceding fixed plate 501 is provided with after-fixing plate 502, the left end of preceding fixed plate 501 is fixed with connector 504, and the outside of connector 504 is provided with connecting seat 506, pivot 505 has been run through at the middle part of connecting seat 506, preceding fixed plate 501 forms revolution mechanic through pivot 505 with the cabinet body 2, and the rear surface of preceding fixed plate 501 is laminated with the, Preceding fixed plate 501, after-fixing plate 502, draw-in groove 503, connector 504, the setting of pivot 505 and connecting seat 506, it is convenient to fix nitrogen cylinder 4, prevent that nitrogen cylinder 4 from rocking, influence nitrogen cylinder 4 and annotate the nitrogen, open preceding fixed plate 501 around pivot 505, place nitrogen cylinder 4 on tray 3, draw-in groove 503 through after-fixing plate 502 fixes a position nitrogen cylinder 4, it is rotatory to fix preceding fixed plate 501 again, press from both sides nitrogen cylinder 4 tightly, through bolt and nut, lock preceding fixed plate 501 and after-fixing plate 502, fix nitrogen cylinder 4;

the connecting pipe 6 is positioned above the nitrogen gas cylinder 4, the exhaust valve 7 is arranged above the connecting pipe 6, the exhaust pipe 9 is connected above the exhaust valve 7, the oil suction pipe 10 is arranged on the right side of the exhaust pipe 9, the switching valve 11 is arranged in the middle of the oil suction pipe 10, the oil leakage window 12 is arranged at the front end of the oil suction pipe 10, the switching valve 11 comprises a shell 1101, a first control valve 1102, a second control valve 1103 and a switching gate 1104, the first control valve 1102 is arranged in the shell 1101, the second control valve 1103 is arranged on the right side of the first control valve 1102, the switching gate 1104 is arranged above the first control valve 1102, the switching gate 1104 forms a rotating structure through a rotating shaft 505, the lower surface of the switching gate 1104 is attached to the outer surface of the first control valve 1102, and the switching valve 11 is prevented from being operated by mistake through the arrangement of the oil suction pipe 10, the shell 1101, the first control valve 1102, the second control valve 1103 and, the switching valve 11 is opened, oil in the transformer leaks to affect the normal operation of the transformer, the first control valve 1102 and the second control valve 1103 limit the switching gate 1104 above the first control valve 1102 and the second control valve 1103, the switching valve 11 is closed, and only when the first control valve 1102 and the second control valve 1103 are contracted, the switching gate 1104 falls down to open the switching valve 11, and the oil suction pipe 10 starts to suck oil;

the lower end of the oil suction pipe 10 is provided with a pool cover 15, an accident oil pool 18 is arranged below the pool cover 15, an oil pump 16 is arranged on the inner side of the accident oil pool 18, a buckle 17 is arranged in front of the oil pump 16, an oil return pipe 14 is fixed on the inner side of the buckle 17, a one-way valve 13 is arranged at the right end of the oil return pipe 14, the oil return pipe 14 is connected with the oil pump 16 through the buckle 17, the oil return pipe 14 is fixedly connected with the one-way valve 13, the oil pump 16, the buckle 17 and the accident oil pool 18 are arranged, oil discharged into the accident oil pool 18 from the oil suction pipe 10 is recovered through the one-way valve 13, the oil return pipe 14 is conveyed back into the transformer by the oil pump 16 after the oil in the accident oil pool 18 is cooled, the oil is prevented from flowing back through the oil return pipe 14 by the one-way valve 13, the oil in the transformer is prevented from volatilizing through the pool cover 15, a hanging ring, a cabinet door 19 is installed in front of the cabinet body 2, a door lock 20 is arranged in front of the cabinet door 19, an observation window 21 is arranged above the door lock 20, and a hinge 22 is installed on the left side of the observation window 21.

The working principle is as follows: when the oil-discharging and nitrogen-injecting fire extinguishing device of the transformer is used, firstly, when the temperature in the transformer rises, a temperature sensor outside the transformer transmits temperature data to a control cabinet, the control cabinet transmits signals to a cabinet body 2, so that a first control valve 1102 and a second control valve 1103 shrink, a switch gate 1104 falls down, a switch valve 11 is opened, redundant oil in the transformer passes through an oil suction pipe 10 and an accident oil pool 18, after a delay of ten seconds, an exhaust valve 7 is opened, nitrogen in a nitrogen cylinder 4 is discharged into the transformer through a connecting pipe 6 and an exhaust pipe 9, residual oil is stirred and cooled, after the temperature of the transformer is relaxed, the exhaust valve 7 and the switch valve 11 are closed, a pool cover 15 seals the accident oil pool 18 to prevent oil volatilization, an oil pump 16 pumps the oil in the accident oil pool 18 into the transformer through an oil return pipe 14 to save resources, and prevent oil in the transformer from flowing back through a one-way valve 13, insert lock 20 with the key, open cabinet door 19, through oil leak window 12, observe the oil leak condition, open fixed knot and construct 5, take off nitrogen cylinder 4 from tray 3, change new nitrogen cylinder 4, this is this transformer oil extraction nitrogen injection extinguishing device's theory of operation.

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 nitrogen extinguishing device is annotated to transformer oil extraction, includes support column (1) and connecting pipe (6), its characterized in that: the top of support column (1) is fixed with the cabinet body (2), and the inboard of the cabinet body (2) is provided with tray (3), the top of tray (3) is provided with nitrogen cylinder (4), and the mid-mounting of nitrogen cylinder (4) has fixed knot to construct (5), connecting pipe (6) are located the top of nitrogen cylinder (4), and the top of connecting pipe (6) installs discharge valve (7), the top of discharge valve (7) is connected with blast pipe (9), and the right side of blast pipe (9) installs oil absorption pipe (10), the mid-mounting of oil absorption pipe (10) has ooff valve (11), and the front end of oil absorption pipe (10) is provided with oil leak window (12), the lower extreme of oil absorption pipe (10) is provided with pool cover (15), and the below of pool cover (15) is provided with accident oil pool (18), the inboard arrangement of accident oil pool (18) has oil pump (16), and the place ahead of oil pump (16) is provided with buckle (17), the inboard of buckle (17) is fixed with returns oil pipe (14), and returns the right-hand member of oil pipe (14) and install check valve (13), the top of the cabinet body (2) is fixed with rings (8), cabinet door (19) are installed in the place ahead of the cabinet body (2), and the place ahead of cabinet door (19) is provided with lock (20), the top of lock (20) is provided with observation window (21), and hinge (22) are installed in the left side of observation window (21).

2. The oil-draining nitrogen-injecting fire extinguishing device for the transformer as claimed in claim 1, wherein: fixed knot constructs (5) and includes preceding fixed plate (501), after-fixing board (502), draw-in groove (503), connector (504), pivot (505) and connecting seat (506), draw-in groove (503) have been seted up to the rear end of preceding fixed plate (501), and the rear of preceding fixed plate (501) is provided with after-fixing board (502), the left end of preceding fixed plate (501) is fixed with connector (504), and the outside of connector (504) is provided with connecting seat (506), the middle part of connecting seat (506) is run through there is pivot (505).

3. The oil-draining nitrogen-injecting fire extinguishing device for the transformer as claimed in claim 2, wherein: the front fixing plate (501) forms a rotating structure with the cabinet body (2) through the rotating shaft (505), and the rear surface of the front fixing plate (501) is attached to the front surface of the rear fixing plate (502).

4. The oil-draining nitrogen-injecting fire extinguishing device for the transformer as claimed in claim 1, wherein: the switching valve (11) comprises a shell (1101), a first control valve (1102), a second control valve (1103) and a switching gate (1104), wherein the first control valve (1102) is installed inside the shell (1101), the second control valve (1103) is arranged on the right side of the first control valve (1102), and the switching gate (1104) is arranged above the first control valve (1102).

5. The oil-draining nitrogen-injecting fire extinguishing apparatus for transformer as claimed in claim 4, wherein: the switch gate (1104) forms a rotating structure through the rotating shaft (505), and the lower surface of the switch gate (1104) is attached to the outer surface of the first control valve (1102).

6. The oil-draining nitrogen-injecting fire extinguishing device for the transformer as claimed in claim 1, wherein: the oil return pipe (14) is connected with the oil pump (16) through a buckle (17), and the oil return pipe (14) is fixedly connected with the one-way valve (13).