CN110931217B - Transformer that electric stove was used is smelted to rock wool goods - Google Patents
Transformer that electric stove was used is smelted to rock wool goods Download PDFInfo
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- CN110931217B CN110931217B CN201911074506.6A CN201911074506A CN110931217B CN 110931217 B CN110931217 B CN 110931217B CN 201911074506 A CN201911074506 A CN 201911074506A CN 110931217 B CN110931217 B CN 110931217B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/16—Water cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a transformer for an electric furnace for smelting rock wool products, which comprises a transformer shell, an oil tank, a transformer iron core and a transformer coil pressure regulating mechanism, wherein the oil tank is arranged in the transformer shell, transformer oil is injected into the oil tank, the transformer iron core is soaked in the transformer oil, and the transformer coil pressure regulating mechanism is arranged on the transformer shell. The advantage, this transformer, the oil tank, the case lid, the iron core assembly, the water-cooling terminal, first oil storage tank, the desiccator assembly, the connecting pipe, the transfer line, the second oil storage tank, the oil filter, annotate the fuel outlet valve, terminal box and mutual-inductor sheathed tube set up, reached and found a transformer that rock wool goods smelted electric stove jointly, wherein the oil tank, the case lid, first oil storage tank and second oil storage tank are convenient for hold and work transformer oil, the desiccator assembly is arranged in cleaing away with debris and moisture in the dry air, the iron core assembly can produce great magnetic induction intensity, can make the volume of transformer reduce.
Description
Technical Field
The invention relates to a transformer for an electric furnace for smelting rock wool products, belonging to the technical field of transformers.
Background
The rock wool product is made up by using refined basalt as main raw material, high-temp. melting, making inorganic fibre by high-speed centrifugal equipment, adding special-made adhesive and dust-proofing oil, laying felt by means of swing belt, changing fibre arrangement structure by means of special-made equipment and finally solidifying and forming.
The circuit that rock wool goods used when smelting need use the transformer, and the transformer is the device that changes alternating voltage using electromagnetic induction's principle, and the main component is primary, secondary and iron core (magnetic core), and the main function has: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), and the like, and can be classified into: the loss of the transformer is proportional to the volume, so that the volume and the loss of the transformer increase by the cubic power of the iron core and the external surface area increases by the quadratic power of the size with the increase of the capacity of the transformer.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the technical problem that the loss of the transformer in the prior art is proportional to the volume of the transformer, so as to increase the capacity of the transformer, the volume and the loss of the transformer increase by the third power of the size of the iron core, and the external surface area increases by the second power of the size is solved.
The invention aims to provide a transformer for a rock wool product smelting electric furnace, which comprises a transformer shell, an oil tank, a transformer iron core and a transformer coil pressure regulating mechanism, wherein the oil tank is arranged in the transformer shell, transformer oil is injected into the oil tank, the transformer iron core is soaked in the transformer oil, and the transformer coil pressure regulating mechanism is arranged on the transformer shell;
the transformer coil voltage regulating mechanism comprises a transmission rod, a driving motor, an on-load switch, an oil filter and a second oil storage cabinet, wherein the driving motor is arranged on the outer wall of the transformer shell; the oil filter is arranged on the outer wall of the transformer shell, and an oil inlet and an oil outlet of the oil filter are in flange connection with an oil inlet and an oil outlet of the on-load switch through a flange hose; the second oil storage cabinet is arranged at the top of the transformer shell and is connected with the oil filter through an oil pipe;
the top of the transformer shell is provided with a high-voltage bushing, and the high-voltage bushing is connected with a winding of the transformer iron core through a lead;
set up the water-cooling terminal that gives the cooling of transformer outgoing line sleeve pipe on transformer housing's lateral wall, set up the cooling device of the cooling of transformer oil in the fuel feeding tank on transformer housing's the lateral wall, cooling device is including the cooling tube of dress in the oil tank, closed cooling tower, the fin cooler, hot-water tank and cold water pool, logical cold water in the cooling tube, connect the both ends of cooling tube respectively through two water pipes on the fin cooler, the fin cooler leads to pipe connects the hot-water tank, the hot-water tank leads to pipe inserts closed cooling tower, the closed cooling tower leads to pipe connects the cold water pool, the cold water pool leads to pipe connects the fin cooler.
Preferably, the first oil storage cabinet is arranged at the top of the transformer shell, the top of the first oil storage cabinet is communicated with the moisture absorber for assembly, and the bottom of the first oil storage cabinet is communicated with the connecting pipe which extends into the oil tank.
Preferably, a box cover is arranged at the top of the transformer shell, and the on-load switch, the second oil conservator and the first oil conservator are all arranged on the top surface of the box cover; the transformer iron core is fixedly connected with the box cover through a first bolt.
Preferably, the top surface of the case cover is provided with a resistance thermometer for measuring the temperature of an outlet sleeve in the transformer shell, the top surface of the case cover is provided with a mercury thermometer for measuring the temperature of transformer oil in an oil tank in the transformer shell, and the top surface of the case cover is provided with a temperature controller for triggering the transformer to be powered off;
the measuring end of the resistance thermometer extends into the transformer shell, the signal end of the resistance thermometer is connected into the temperature controller, the measuring end of the mercury thermometer extends into transformer oil in the oil tank, the signal end of the mercury thermometer is connected into the temperature controller, and the trigger signal of the temperature controller is connected into the power supply end of the transformer.
Preferably, an oil filter bypass valve for filtering impurities of transformer oil in the oil tank and a pressure release valve for releasing pressure in the oil tank are arranged on the top surface of the tank cover.
Preferably, the top surface of the box cover is provided with a positioning rod, a mutual inductor sleeve and a grounding sleeve.
Preferably, the bottom of the transformer shell is provided with a small traveling wheel.
Preferably, the bottom of the outer surface of one side of the transformer shell is sequentially provided with a word plate, a grounding screw and an oil injection and drainage valve from left to right; and a terminal box junction box is fixed on one side of the oil tank.
Preferably, the air release plug is arranged on a water pipe connected with the cooling pipe in the oil tank of the fin cooler, the first water pump for sending cold water in the cold water tank into the fin cooler is arranged on the water pipe between the fin cooler and the cold water tank, the second water pump for sending hot water in the hot water tank into the closed cooling tower is arranged on the water pipe between the hot water tank and the closed cooling tower, and the third water pump for sending hot water in the cooling pipe into the fin cooler is arranged on the water pipe connected with the cooling pipe in the oil tank of the fin cooler.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to a transformer for a rock wool product smelting electric furnace, which is characterized in that an oil tank, a tank cover, an iron core assembly, a water-cooled terminal, a first oil storage cabinet, a moisture absorber assembly, a connecting pipe, a transmission rod, a second oil storage cabinet, an oil filter, an oil injection and discharge valve, a terminal box and a mutual inductor sleeve are arranged, so that the transformer for the rock wool product smelting electric furnace is jointly constructed, wherein the oil tank, the tank cover, the first oil storage cabinet and the second oil storage cabinet are convenient for containing and working transformer oil, the moisture absorber assembly is used for removing and drying impurities and moisture in air, the iron core assembly can generate larger magnetic induction intensity, and the volume of the transformer can be reduced.
Drawings
Fig. 1 is a front view of the transformer of the present embodiment (with the transformer core suspended).
Fig. 2 is a side view of the transformer of the present embodiment.
Fig. 3 is a left side view of fig. 2.
Fig. 4 is a plan view of the transformer of the present embodiment.
Fig. 5 is a sectional view showing the mounting position of the spacer in the present embodiment.
Fig. 6 is a block flow diagram of a cooling device.
Detailed Description
The technical solution of the present invention is described in detail below, but the scope of the present invention is not limited to the embodiments.
In order to make the disclosure of the present invention more comprehensible, the following description is further made in conjunction with fig. 1 to 6 and the detailed description.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in fig. 1, the transformer for the electric furnace for smelting rock wool products comprises a transformer shell 1, an oil tank, a transformer iron core 3 and a transformer coil pressure regulating mechanism, wherein the oil tank is arranged in the transformer shell 1, transformer oil 35 is injected into the oil tank, the transformer iron core 3 is soaked in the transformer oil 35, and the transformer coil pressure regulating mechanism is arranged on the transformer shell 1.
As shown in fig. 2, 3 and 4, the transformer coil voltage regulating mechanism includes a transmission rod 11, a driving motor 36, a load switch 29, an oil filter 13 and a second oil conservator 10, the driving motor 36 is installed on the outer wall of the transformer housing 1, the transmission rod 11 is installed on the motor shaft of the driving motor 36 through a gear pair, the end of the transmission rod 11 is connected with the switch body of the load switch 29, the load switch 29 is installed on the top of the transformer housing 1, and the load switch 29 regulates the voltage regulating coil of the transformer; the oil filter 13 is arranged on the outer wall of the transformer shell 1, and an oil inlet and an oil outlet of the oil filter 13 are in flange connection with an oil inlet and an oil outlet of the on-load switch 29 through a flange hose; the second oil conservator 10 is installed on the top of the transformer housing 1, and the second oil conservator 10 is connected with the oil filter 13 through an oil pipe.
As shown in fig. 2 and fig. 6, a water-cooled terminal 4 for cooling the transformer outlet bushing is disposed on the side wall of the transformer housing 1, and a cooling device 6 for cooling the transformer oil 5 in the oil tank is disposed on the side wall of the transformer housing 1. The main body of the cooler is that a cooling pipe is arranged in an oil chamber, and cold water is introduced into the cooling pipe. The oil space outside the tube is divided into a plurality of channels, which facilitates sufficient heat exchange. The cooling system is a semi-closed system, and circulating cooling water in the system is locally in contact with the atmosphere. The oil-water cooler directly communicated with the transformer is a first stage by adopting a two-stage cooling mode, cooling water is in closed circulation, and the water is not directly contacted with air for cooling; the water and air heat exchanger is a second stage, with the cooling water being in local contact with the air. See figure 6 for details.
As shown in fig. 6, the cooling device 6 includes a cooling pipe installed in an oil tank, a closed cooling tower 61, a fin cooler 62, a hot water tank 63 and a cold water tank 64, wherein cold water is introduced into the cooling pipe, the fin cooler 62 is connected to two ends of the cooling pipe through two water pipes, the fin cooler 62 is connected to the hot water tank 63 through a water pipe, the hot water tank 63 is connected to the closed cooling tower 61 through a water pipe, the closed cooling tower 61 is connected to the cold water tank 64 through a water pipe, and the cold water tank 64 is connected to the fin cooler 62 through a water pipe.
As shown in fig. 6, the air release plug 27 is installed on the water pipe connecting the fin cooler 62 and the cooling pipe in the oil tank, the first water pump 65 for sending the cold water in the cold water tank 64 to the fin cooler 62 is installed on the water pipe between the fin cooler 62 and the cold water tank 64, the second water pump 66 for sending the hot water in the hot water tank 63 to the closed cooling tower 61 is installed on the water pipe between the hot water tank 63 and the closed cooling tower 61, and the third water pump 67 for sending the hot water in the cooling pipe to the fin cooler 62 is installed on the water pipe connecting the fin cooler 62 and the cooling pipe in the oil tank.
The cooling tube of this example is tightly expanded together by an outer tube with rolled fins and a smooth inner tube, the inner liner tube is a T2 copper tube, and the outer finned tube is pure aluminum. Such a cooler is intended to prevent cooling water from entering the oil due to leakage at all times, and even if the amount of such water is slight, serious accidents of the transformer may occur. Therefore, the cooler of the embodiment is provided with a differential pressure signal device for protection, the differential pressure signal device is respectively communicated with the oil outlet and the water inlet, and a fault signal is sent out when the oil-water differential pressure is less than 0.05MPa, so that the oil pressure is always greater than the water pressure, and the pipe has small leakage and water cannot enter the oil.
In the embodiment, the inner wall of the outer pipe of the cooling pipe is provided with the plurality of axial leakage detection grooves, if the inner pipe which is communicated with water leaks due to corrosion, the water flows into the leakage alarm along the grooves under pressure to alarm, and the water cannot flow into the oil on the other side, so that the safe operation of the transformer is guaranteed.
As shown in fig. 2, 3 and 4, a tank cover 2 is mounted on the top of a transformer housing 1, and a load switch 29, a second conservator 10 and a first conservator 5 are all mounted on the top surface of the tank cover 2; the transformer core 3 is fixedly connected with the box cover 2 through a first bolt 8. A high-voltage bushing 30 is arranged on the box cover 2 at the top of the transformer housing 1, and the high-voltage bushing 30 is connected with the winding of the transformer core 3 through a lead. The top of the first oil conservator 5 is communicated with a moisture absorber assembly 26, the bottom of the first oil conservator 5 is communicated with a connecting pipe 7, and the connecting pipe 7 extends into the oil tank.
As shown in fig. 4, a resistance thermometer 22 for measuring the temperature of the outlet bushing inside the transformer housing 1 is installed on the top surface of the case cover 2, a mercury thermometer 21 for measuring the temperature of the transformer oil 35 inside the transformer housing 1 is installed on the top surface of the case cover 2, and a temperature controller 23 for triggering the power-off of the transformer is installed on the top surface of the case cover 2; the measuring end of the resistance thermometer 22 extends into the transformer shell 1, the signal end of the resistance thermometer 22 is connected to the temperature controller 23, the measuring end of the mercury thermometer 21 extends into transformer oil 35 in the oil tank, the signal end of the mercury thermometer 21 is connected to the temperature controller 23, and the trigger signal of the temperature controller 23 is connected to the power end of the transformer.
As shown in fig. 4, an oil filter bypass valve 24 for filtering foreign substances from the transformer oil 35 in the tank and a pressure release valve 25 for releasing the pressure in the tank are installed on the top surface of the tank cover 2. A positioning rod 18, a transformer bushing 20 and a grounding bushing 32 are arranged on the top surface of the case cover 2.
As shown in fig. 4, a bridge 28 is provided on the left side of the top surface of the case cover 2, the end of the transmission rod 11 is connected to the switch body of the load switch 29, and a high-pressure bushing 30 is provided on the rear side of the top surface of the case cover 2, and the high-pressure bushing 30 can transmit pressure.
As shown in fig. 4, a tertiary bushing 31 is disposed on the top of the tank cover 2 and behind the bridge 28, a grounding bushing 32 is disposed on the right side of the top of the tank cover 2, a spacer 33 is disposed on the top of the tank cover 2, a protective capacitor 34 is disposed on the rear side of the top of the tank cover 2, and transformer oil 35 is disposed in the inner cavity of the oil tank 1; through the above arrangement, the transformer oil 35 can dissipate heat when the device works to generate heat.
As shown in fig. 2, a character plate 17, a grounding screw 16 and an oil filling and discharging valve 15 are sequentially arranged at the bottom of the outer surface of one side of the transformer housing 1 from left to right; a terminal box junction box 19 is fixed on one side of the oil tank. A nameplate 12 is welded on the surface of the transformer shell 1, and a small traveling wheel 14 is arranged at the bottom of the transformer shell 1.
The structural principle of the transformer in the embodiment is that when the transformer is used, the transformer for the rock wool product electric smelting electric furnace is jointly constructed through the arrangement of the oil tank, the tank cover 2, the transformer iron core 3, the water-cooled terminal 4, the first oil storage cabinet 5, the moisture absorber assembly 6, the connecting pipe 7, the transmission rod 11, the second oil storage cabinet 10, the oil filter 13, the oil injection and discharge valve 15, the terminal box junction box 19 and the mutual inductor sleeve 20, wherein the oil tank, the tank cover 2, the first oil storage cabinet 5 and the second oil storage cabinet 10 are convenient for containing and working the transformer oil 35, the moisture absorber assembly 6 is used for removing and drying impurities and moisture in air, the transformer iron core 3 can generate large magnetic induction intensity to reduce the volume of the transformer, the water-cooled terminal 4 and the connecting pipe 7 can dissipate heat of the transformer when the transformer works, the transformer oil 35 contained in the inner cavity of the oil tank 1 passes through, and the heat generated when the transformer works causes the oil close to the transformer iron core 3 and the winding, through the up-down convection of transformer oil 35, the heat is dissipated through cooling device 6 and water-cooling terminal 4, guarantees the normal operating of this device to solved because the loss of transformer is proportional with its volume, so along with the increase of transformer capacity, its volume and loss will increase with iron core size cubic, and the problem that the external surface area only increases according to the square of size, make large capacity transformer core and winding soak in oil.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A transformer that electric stove was used is smelted to rock wool goods, its characterized in that: the transformer comprises a transformer shell (1), an oil tank, a transformer iron core (3) and a transformer coil voltage regulating mechanism, wherein the oil tank is arranged in the transformer shell (1), transformer oil (35) is injected into the oil tank, the transformer iron core (3) is immersed in the transformer oil (35), and the transformer coil voltage regulating mechanism is arranged on the transformer shell (1);
the transformer coil voltage regulating mechanism comprises a transmission rod (11), a driving motor (36), an on-load switch (29), an oil filter (13) and a second oil storage cabinet (10), wherein the driving motor (36) is installed on the outer wall of the transformer shell (1), a motor shaft of the driving motor (36) is provided with the transmission rod (11) through a gear pair, the end part of the transmission rod (11) is connected with a switch body of the on-load switch (29), the on-load switch (29) is installed at the top of the transformer shell (1), and the on-load switch (29) is connected with a voltage regulating coil of the transformer in a regulating mode; the oil filter (13) is arranged on the outer wall of the transformer shell (1), and an oil inlet and an oil outlet of the oil filter (13) are in flange connection with an oil inlet and an oil outlet of the on-load switch (29) through a flange hose; the second oil storage cabinet (10) is installed at the top of the transformer shell (1), and the second oil storage cabinet (10) is connected with an oil filter (13) through an oil pipe;
the top of the transformer shell (1) is provided with a high-voltage bushing (30), and the high-voltage bushing (30) is connected with a winding of the transformer iron core (3) through a lead;
set up water-cooling terminal (4) of giving transformer outlet wire sleeve pipe cooling on the lateral wall of transformer housing (1), set up cooling device (6) of transformer oil (5) cooling in the fuel feed tank on the lateral wall of transformer housing (1), cooling device (6) are including the cooling tube of dress in the fuel tank, closed cooling tower (61), fin cooler (62), hot water pond (63) and cold water pool (64), logical cold water in the cooling tube, connect the both ends of cooling tube respectively through two water pipes on fin cooler (62), fin cooler (62) lead to water piping connection hot water pond (63), hot water pond (63) lead to water pipe and insert closed cooling tower (61), closed cooling tower (61) lead to water piping connection cold water pool (64), cold water pool (64) lead to water piping connection fin cooler (62).
2. The transformer for the electric furnace for smelting rock wool products according to claim 1, wherein a first oil conservator (5) is installed at the top of the transformer shell (1), the top of the first oil conservator (5) is communicated with a moisture absorber assembly (26), the bottom of the first oil conservator (5) is communicated with a connecting pipe (7), and the connecting pipe (7) extends into an oil tank.
3. The transformer for the electric furnace for rock wool product smelting according to claim 2, wherein a box cover (2) is installed on the top of the transformer housing (1), and the on-load switch (29), the second oil conservator (10) and the first oil conservator (5) are all installed on the top surface of the box cover (2); the transformer iron core (3) is fixedly connected with the box cover (2) through a first bolt (8).
4. The transformer for the electric furnace for smelting rock wool products according to claim 3, wherein a resistance thermometer (22) for measuring the temperature of the outlet sleeve inside the transformer shell (1) is installed on the top surface of the box cover (2), a mercury thermometer (21) for measuring the temperature of the transformer oil (35) inside the transformer shell (1) is installed on the top surface of the box cover (2), and a temperature controller (23) for triggering the transformer to be powered off is installed on the top surface of the box cover (2);
the measuring end of the resistance thermometer (22) extends into the transformer shell (1), the signal end of the resistance thermometer (22) is connected into the temperature controller (23), the measuring end of the mercury thermometer (21) extends into transformer oil (35) in an oil tank, the signal end of the mercury thermometer (21) is connected into the temperature controller (23), and the trigger signal of the temperature controller (23) is connected into the power supply end of the transformer.
5. The transformer for the electric furnace for smelting rock wool products according to claim 3, wherein an oil filter bypass valve (24) for filtering impurities from the transformer oil (35) in the oil tank and a pressure relief valve (25) for relieving the pressure in the oil tank are installed on the top surface of the tank cover (2).
6. The transformer for the electric furnace for rock wool product smelting according to claim 3, characterized in that a positioning rod (18), a transformer bushing (20) and a grounding bushing (32) are arranged on the top surface of the box cover (2).
7. The transformer for the electric furnace for smelting rock wool products as claimed in claim 1, wherein the bottom of the transformer shell (1) is provided with small running wheels (14).
8. The transformer for the electric furnace for smelting rock wool products according to claim 1, wherein a character plate (17), a grounding screw (16) and an oil filling and discharging valve (15) are sequentially arranged at the bottom of the outer surface of one side of the transformer shell (1) from left to right; a terminal box junction box (19) is fixed on one side of the oil tank.
9. The transformer for the electric furnace for rock wool product smelting according to claim 1, wherein a gas release plug (27) is installed on a water pipe connecting the fin cooler (62) and a cooling pipe in the oil tank, a first water pump (65) for sending cold water in the cooling tank (64) into the fin cooler (62) is installed on the water pipe between the fin cooler (62) and the cooling tank (64), a second water pump (66) for sending hot water in the hot water tank (63) into the closed cooling tower (61) is installed on the water pipe between the hot water tank (63) and the closed cooling tower (61), and a third water pump (67) for sending hot water in the cooling pipe into the fin cooler (62) is installed on the water pipe connecting the fin cooler (62) and the cooling pipe in the oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911074506.6A CN110931217B (en) | 2019-11-06 | 2019-11-06 | Transformer that electric stove was used is smelted to rock wool goods |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911074506.6A CN110931217B (en) | 2019-11-06 | 2019-11-06 | Transformer that electric stove was used is smelted to rock wool goods |
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| CN110931217A CN110931217A (en) | 2020-03-27 |
| CN110931217B true CN110931217B (en) | 2020-12-18 |
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|---|---|---|---|---|
| CN101819857A (en) * | 2010-04-06 | 2010-09-01 | 上海海鼎实业发展有限公司 | Cooling system for power transformer |
| CN103996498A (en) * | 2014-06-11 | 2014-08-20 | 中国能建集团装备有限公司南京技术中心 | Seawater cooling system for main transformer of offshore substation |
| CN109192461A (en) * | 2018-08-03 | 2019-01-11 | 深圳供电规划设计院有限公司 | A kind of main transformer underground water cooled system |
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| CN110931217A (en) | 2020-03-27 |
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