Multi-loop output direct-current electric furnace transformer

Abstract

The invention relates to the technical field of electric furnace transformers, and discloses a multi-loop output direct-current electric furnace transformer which comprises an oil tank, a sealing cover is fixedly installed above the oil tank, a low-voltage porcelain sleeve is fixedly installed above the sealing cover, a fixing pipe is fixedly installed above the sealing cover, an air outlet is formed in the sealing cover, and an air outlet is formed in the air outlet. A first sealing plug is slidably connected to the interior of the air outlet. A second sealing plug is connected into the oil tank in a sliding mode, a connecting plate can drive a connecting rod to slide backwards so that the second sealing plug can be separated from the oil tank, oil flows into a folding pipe, and therefore a circulating pump and a first motor are started to drive the oil to conduct the circulating cooling effect; and the second sealing plug is reset, so that the first motor is closed, starting of the circulating pump and the first motor can be controlled, and the condition that the circulating pump and the first motor can operate loads is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of electric furnace transformers, and more specifically, to a multi-loop output DC electric furnace transformer. Background Art

[0002] Electric furnace transformer refers to resistance furnace and salt bath furnace used for mechanical parts heating, heat treatment, powder metallurgy sintering, non-ferrous metal smelting, etc., and most of the existing electric furnace transformers are cooled by forced oil-guided circulation, forced water cooling or forced oil-guided circulation, forced air cooling. Since a partition can be conveniently set between the oil tank and the body of the transformer, the cooled transformer oil is forced to flow through the coils, and the oil flow is uniform, which increases the transformer's additional overload capacity;

[0003] When the existing transformer is circulating and cooling, the oil pump inside the transformer needs to work continuously. Over time, it is easy to cause load and damage to the oil pump, thereby increasing the service life of the oil pump and the cost of overall maintenance. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a multi-circuit output DC furnace transformer, which has the advantage of being able to start an oil pump according to actual conditions and thereby increasing the service life of the oil pump.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a multi-circuit output DC furnace transformer, comprising an oil tank, a sealing cover fixedly installed on the top of the oil tank, a low-voltage porcelain bushing fixedly installed on the top of the sealing cover, a fixed pipe fixedly installed on the top of the sealing cover, an air outlet opened inside the sealing cover, a sealing plug 1 is slidably connected inside the air outlet, a spring 1 is fixedly installed above the sealing plug 1, a fixed plate 1 is fixedly installed above the spring 1, a fixing ring is fixedly installed inside the fixing pipe, a sliding rod is slidably connected inside the fixing ring, a spring 2 is sleeved on the surface of the sliding rod, a connecting plate is fixedly installed behind the sliding rod, a connecting rod is fixedly installed on the surface of the connecting plate, a sealing plug 2 is fixedly installed in front of the connecting rod, a folding pipe is fixedly installed in front of the oil tank, an air bag is fixedly connected on the surface of the folding pipe, a telescopic rod is fixedly installed in front of the oil tank, a circulating pump is fixedly installed in front of the telescopic rod, a motor 1 is fixedly installed in front of the circulating pump, and an oil pipe is fixedly installed on the left side of the circulating pump.

[0006] Preferably, a fixing rod is fixedly installed on the right side of the oil tank, a protective shell is fixedly installed on the right side of the fixing rod, motor 2 is fixedly installed on the right side of the protective shell, fan blades are fixedly installed on the output end of motor 2, and the fan blades are located inside the protective shell.

[0007] Preferably, a fixing plate 2 is fixedly installed above the oil tank, a spring 3 is fixedly installed behind the fixing plate 2, a sealing plate is slidably connected inside the oil tank, and the spring 3 is fixedly connected to the sealing plate.

[0008] Preferably, a hose is fixedly mounted below the oil pipe, the hose is located between the connecting plate and the fixed pipe, a transformer is fixedly mounted on the bottom of the cover, and a coil is fixedly mounted on the surface of the transformer.

[0009] Preferably, the sealing plug 1, the spring 1 and the fixing plate 1 are all located inside the fixing tube, the interior of the fixing tube is hollow, and the fixing tube is located on the right side of the low-pressure porcelain bushing.

[0010] Preferably, the second sealing plug is located inside the oil tank and is slidably connected, the second sealing plug is located directly behind the folding tube, and the second sealing plug is circular.

[0011] Preferably, the airbag is located between the circulating pump and the oil tank, and there are four telescopic rods, which are respectively located at the upper and lower sides of the telescopic rod.

[0012] Preferably, the fixing ring, the sliding rod and the second spring are all located inside the fixing tube, and the second spring is located in front of the fixing ring.

[0013] Preferably, the folding tube is located in front of the oil tank, the folding tube is fixedly connected to the fixing ring, and the folding tube is located below the oil pipe.

[0014] Preferably, there are three transformers and three coils, and the three transformers and the three coils are all located inside the oil tank. There are multiple low-voltage porcelain bushings, and the low-voltage porcelain bushings are all located above the transformer and are electrically connected to the transformer.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention is connected with sealing plug 2 by sliding inside the oil tank. When the internal air pressure is too high, the air pressure will push sealing plug 1 upward, thereby pushing the sliding rod to slide in the direction of the connecting plate. When the sliding rod drives the connecting plate to slide backward, the connecting plate will drive the connecting rod to slide backward so that sealing plug 2 is separated from the oil tank, and the oil flows into the inside of the folding tube, so that the circulation pump and motor 1 are started and the oil is driven to circulate and cool down. At the same time, when the internal temperature drops, the sealing plug 2 is reset, so that motor 1 is turned off, so as to control the start-up of the circulation pump and motor 1 and prevent the circulation pump and motor 1 from running under load.

[0017] 2. The present invention provides a hose between the connecting plate and the fixed pipe. When the temperature is low, the connecting plate will be squeezed toward the fixed pipe, thereby contracting the hose and slowing down the oil circulation speed inside the oil pipe. When the temperature is high, the connecting plate slides backward and the hose is saturated, so that the oil inside will flow quickly, thereby achieving a rapid cooling effect and preventing the oil from being difficult to control the flow speed during use, resulting in excessive internal oil temperature differences and uneven cooling.

[0018] 3. The present invention fixes an airbag on the left side of the folding tube. When the interior needs to be cooled, oil is injected into the interior of the telescopic rod and then expands. When the motor is started, greater vibration and noise are generated. At this time, since the interior of the telescopic rod is liquid, it absorbs the noise generated by the vibration of the motor after expansion, thereby achieving a noise reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 A schematic diagram of the structure at A;

[0021] Figure 3 This is a schematic diagram of the oil tank structure of the present invention;

[0022] Figure 4 For the present invention Figure 3 A schematic diagram of the structure at B;

[0023] Figure 5 This is a schematic diagram of the structure of the circulating pump of the present invention;

[0024] Figure 6 For the present invention Figure 5 A schematic diagram of the structure at position C of FIG.

[0025] Figure 7 For the present invention Figure 5 Enlarged schematic diagram of the structure at D.

[0026] In the figure: 1. oil tank; 2. sealing cover; 3. low-voltage porcelain bushing; 4. fixed pipe; 5. air outlet; 6. sealing plug 1; 7. spring 1; 8. fixing plate 1; 9. fixing ring; 10. sliding rod; 11. spring 2; 12. connecting plate; 13. connecting rod; 14. sealing plug 2; 15. hose; 16. folding tube; 17. air bag; 18. telescopic rod; 19. circulating pump; 20. motor 1; 21. oil pipe; 22. motor 2; 23. fan blade; 24. fixing rod; 25. protective shell; 26. fixing plate 2; 27. spring 3; 28. sealing plate; 29. ​​transformer; 30. coil. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figures 1 to 7 As shown, the present invention provides a multi-circuit output DC furnace transformer, including an oil tank 1, a cover 2 is fixedly installed above the oil tank 1, a low-voltage porcelain bushing 3 is fixedly installed above the cover 2, a fixed tube 4 is fixedly installed above the cover 2, an air outlet 5 is opened inside the cover 2, a sealing plug 6 is slidably connected inside the air outlet 5, a spring 7 is fixedly installed above the sealing plug 6, a fixing plate 8 is fixedly installed above the spring 7, a fixing ring 9 is fixedly installed inside the fixing tube 4, and a sliding rod 10 is slidably connected inside the fixing ring 9. A spring 11 is sleeved on the surface of the slide bar 10, a connecting plate 12 is fixedly installed at the rear of the slide bar 10, a connecting rod 13 is fixedly installed on the surface of the connecting plate 12, a sealing plug 14 is fixedly installed in front of the connecting rod 13, a folding tube 16 is fixedly installed in front of the oil tank 1, an air bag 17 is fixedly connected to the surface of the folding tube 16, a telescopic rod 18 is fixedly installed in front of the oil tank 1, a circulating pump 19 is fixedly installed in front of the telescopic rod 18, a motor 20 is fixedly installed in front of the circulating pump 19, and an oil pipe 21 is fixedly installed on the left side of the circulating pump 19.

[0029] The motor 20 is located in front of the oil tank 1. When the internal air pressure of the oil tank 1 is too high, the air pressure will push the sealing plug 6 upward. At this time, the air pressure will push the sliding rod 10 forward through the inside of the fixed tube 4, and at the same time move the connecting plate 12 backward. At this time, the connecting plate 12 will drive the connecting rod 13 to move backward, so that the sealing plug 14 is away from the oil tank 1, so that the oil inside the oil tank 1 can flow to the inside of the folding tube 16. When the inside of the folding tube 16 has oil flowing, the motor 20 will start and drive the circulation pump 19 to run, so that the internal oil completes the circulation operation. At the same time, according to the distance that the connecting plate 12 moves backward, the diameter value of the hose 15 is controlled, thereby controlling the flow rate, so that when the internal temperature is high, the internal flow rate can be accelerated to achieve the effect of rapid cooling.

[0030] Among them, a fixing rod 24 is fixedly installed on the right side of the oil tank 1, a protective shell 25 is fixedly installed on the right side of the fixing rod 24, a motor 22 is fixedly installed on the right side of the protective shell 25, and a fan blade 23 is fixedly installed on the output end of the motor 22, and the fan blade 23 is located inside the protective shell 25.

[0031] The oil pipe 21 is located on the left side of the fan blade 23. When the oil passes through the oil pipe 21, the motor 22 will drive the fan blade 23 to rotate, thereby quickly increasing the flow of air on the surface of the oil pipe 21, so as to quickly cool the oil inside the oil pipe 21.

[0032] Among them, a fixing plate 26 is fixedly installed on the top of the oil tank 1, a spring 3 27 is fixedly installed behind the fixing plate 26, and a sealing plate 28 is slidably connected inside the oil tank 1, and the spring 3 27 is fixedly connected to the sealing plate 28.

[0033] The sealing plate 28 is in a horizontal L-shape, and its main function is to seal the contact area between the connecting rod 13 and the oil tank 1 when the connecting rod 13 moves backward following the connecting plate 12, thereby controlling the situation in which the air pressure inside the oil tank 1 is not balanced when the temperature is lowered.

[0034] A hose 15 is fixedly installed below the oil pipe 21 , and the hose 15 is located between the connecting plate 12 and the fixed pipe 4 . A transformer 29 is fixedly installed at the bottom of the cover 2 , and a coil 30 is fixedly installed on the surface of the transformer 29 .

[0035] The saturation of the hose 15 is controlled according to the distance the connecting plate 12 moves backward, so as to control the flow rate of the internal oil, so that the higher the temperature, the faster the flow rate, and when the temperature is low, the flow rate will slow down.

[0036] Among them, the sealing plug 6 , the spring 7 and the fixing plate 8 are all located inside the fixing tube 4 , the inside of the fixing tube 4 is hollow, and the fixing tube 4 is located on the right side of the low-voltage porcelain bushing 3 .

[0037] The main function of the sealing plug 6 and the spring 7 is to ensure that the sealing plug 6 is located inside the air outlet 5 when the air pressure inside the oil tank 1 is low, so as to prevent the internal air pressure from pouring out. At the same time, when the internal air pressure is high, the internal air pressure is discharged upward, so as to control the internal temperature and circulate and cool the oil at the appropriate time.

[0038] The second sealing plug 14 is located inside the oil tank 1 for sliding connection. The second sealing plug 14 is located directly behind the folding tube 16 and is circular.

[0039] The main function of the sealing plug 14 is that when the temperature is low, the sealing plug 14 seals the oil inside the oil tank 1 so that the circulating pump 19 will not start when it does not come into contact with the oil. When the internal oil temperature is high, the sealing plug 14 will move backward, so that the oil will flow into the inside of the folding tube 16. At the same time, the motor 20 is started to circulate the oil, thereby controlling the circulating pump 19 and the motor 20, thereby reducing the load of the circulating pump 19 and increasing the service life of the circulating pump 19 and the motor 20.

[0040] The air bag 17 is located between the circulating pump 19 and the oil tank 1 , and there are four telescopic rods 18 , which are respectively located at the upper and lower sides of the telescopic rod 18 .

[0041] The main function of the telescopic rod 18 is that when oil flows into the folding tube 16, it will flow into the telescopic rod 18. When the circulating pump 19 and the motor 20 are running, there will be liquid inside the telescopic rod 18, which will absorb the vibration generated by the circulating pump 19 and the motor 20, thereby achieving the effect of noise reduction.

[0042] The fixing ring 9 , the sliding rod 10 and the second spring 11 are all located inside the fixing tube 4 , and the second spring 11 is located in front of the fixing ring 9 .

[0043] The main function of spring 2 11 is that when the internal air pressure of the fuel tank 1 is too high, the air pressure will push the slide bar 10 toward the connecting plate 12, thereby driving the connecting rod 13 to slide backward. At the same time, when the internal air pressure of the fuel tank 1 becomes low, spring 2 11 will provide elastic force to reset the slide bar 10.

[0044] The folding tube 16 is located in front of the oil tank 1 , the folding tube 16 is fixedly connected to the fixing ring 9 , and the folding tube 16 is located below the oil pipe 21 .

[0045] The main function of the folding tube 16 is to be able to fold and slide. When the motor 20 is started, it will vibrate and produce a loud noise. At this time, the telescopic rod 18 will expand to absorb the energy of the motor 20, and at the same time push the motor 20 forward a small distance. At this time, the folding tube 16 also needs to move forward a distance.

[0046] There are three transformers 29 and three coils 30 , which are all located inside the oil tank 1 . There are multiple low-voltage porcelain bushings 3 , which are all located above the transformers 29 and are electrically connected to the transformers 29 .

[0047] The main function of the three coils 30 is to control the voltage inside so as to achieve the effect of providing voltage transformation for the whole. At the same time, since the three coils 30 are immersed in the oil, the temperature of the coils 30 will rise when they are working, and the oil can be used to cool the inside.

[0048] The working principle and use process of the present invention:

[0049] First, after the device is installed, the coil 30 is allowed to complete the voltage transformation work normally. At this time, when the internal air pressure is too high, the air pressure will push the sealing plug 6 upward, thereby pushing the slide bar 10 to slide in the direction of the connecting plate 12. When the slide bar 10 drives the connecting plate 12 to slide backward, the connecting plate 12 will drive the connecting rod 13 to slide backward so that the sealing plug 14 is separated from the oil tank 1, and the oil flows into the inside of the folding tube 16, so that the circulation pump 19 and the motor 1 20 are started and the oil is driven to circulate and cool down. At the same time, when the internal temperature drops, the sealing plug 14 is reset, so that the motor 1 20 is turned off, so that the start of the circulation pump 19 and the motor 1 20 can be controlled;

[0050] At this time, the oil will flow into the inside of the oil pipe 21, and when passing the left side of the fan blade 23, the motor 22 is started to drive the fan blade 23 to rotate at a high speed, thereby achieving the effect of quickly dissipating heat and cooling the surface of the oil pipe 21;

[0051] At the same time, the connecting plate 12 slides forward and backward to control the force of squeezing the hose 15, so as to control the flow speed of the oil inside the hose 15 and thus achieve the effect of controlling the temperature balance;

[0052] Finally, when the connecting rod 13 moves backward following the connecting plate 12, the sealing plate 28 will be driven by the spring three 27 to slide backward, so as to seal the contact point between the connecting rod 13 and the oil tank 1, thereby preventing the air pressure inside the oil tank 1 from being unbalanced when the temperature is lowered.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-circuit output DC furnace transformer, comprising an oil tank (1), characterized in that: A sealing cover (2) is fixedly installed on the top of the oil tank (1), a low-pressure porcelain bushing (3) is fixedly installed on the top of the sealing cover (2), a fixing tube (4) is fixedly installed on the top of the sealing cover (2), an air outlet (5) is opened inside the sealing cover (2), a sealing plug (6) is slidably connected inside the air outlet (5), a spring (7) is fixedly installed above the sealing plug (6), a fixing plate (8) is fixedly installed above the spring (7), a fixing ring (9) is fixedly installed inside the fixing tube (4), a sliding rod (10) is slidably connected inside the fixing ring (9), and a spring (2) is sleeved on the surface of the sliding rod (10). 11), a connecting plate (12) is fixedly installed at the rear of the sliding rod (10), a connecting rod (13) is fixedly installed on the surface of the connecting plate (12), a sealing plug 2 (14) is fixedly installed in front of the connecting rod (13), a folding tube (16) is fixedly installed in front of the oil tank (1), an air bag (17) is fixedly connected to the surface of the folding tube (16), a telescopic rod (18) is fixedly installed in front of the oil tank (1), a circulating pump (19) is fixedly installed in front of the telescopic rod (18), a motor 1 (20) is fixedly installed in front of the circulating pump (19), and an oil pipe (21) is fixedly installed on the left side of the circulating pump (19).

2. A multi-circuit output DC furnace transformer according to claim 1, characterized in that: A fixing rod (24) is fixedly mounted on the right side of the oil tank (1), a protective shell (25) is fixedly mounted on the right side of the fixing rod (24), a second motor (22) is fixedly mounted on the right side of the protective shell (25), a fan blade (23) is fixedly mounted on the output end of the second motor (22), and the fan blade (23) is located inside the protective shell (25).

3. The multi-circuit output DC furnace transformer according to claim 1, characterized in that: A second fixing plate (26) is fixedly installed above the oil tank (1), a third spring (27) is fixedly installed behind the second fixing plate (26), a sealing plate (28) is slidably connected inside the oil tank (1), and the third spring (27) is fixedly connected to the sealing plate (28).

4. The multi-circuit output DC furnace transformer according to claim 1, characterized in that: A hose (15) is fixedly mounted below the oil pipe (21), and the hose (15) is located between the connecting plate (12) and the fixed pipe (4). A transformer (29) is fixedly mounted at the bottom of the cover (2), and a coil (30) is fixedly mounted on the surface of the transformer (29).

5. The multi-circuit output DC furnace transformer according to claim 1, characterized in that: The sealing plug (6), spring (7) and fixing plate (8) are all located inside the fixing tube (4); the inside of the fixing tube (4) is hollow; and the fixing tube (4) is located on the right side of the low-pressure porcelain bushing (3).

6. The multi-circuit output DC furnace transformer according to claim 1, characterized in that: The second sealing plug (14) is located inside the oil tank (1) and is slidably connected. The second sealing plug (14) is located directly behind the folding tube (16). The second sealing plug (14) is circular.

7. The multi-circuit output DC furnace transformer according to claim 1, characterized in that: The air bag (17) is located between the circulating pump (19) and the oil tank (1), and there are four telescopic rods (18), which are respectively located on the upper and lower sides of the telescopic rod (18).

8. The multi-circuit output DC furnace transformer according to claim 1, characterized in that: The fixing ring (9), the sliding rod (10) and the second spring (11) are all located inside the fixing tube (4), and the second spring (11) is located in front of the fixing ring (9).

9. The multi-circuit output DC furnace transformer according to claim 1, characterized in that: The foldable tube (16) is located in front of the oil tank (1), the foldable tube (16) is fixedly connected to the fixing ring (9), and the foldable tube (16) is located below the oil pipe (21).

10. The multi-circuit output DC furnace transformer according to claim 4, characterized in that: There are three transformers (29) and three coils (30), and the three transformers (29) and the three coils (30) are all located inside the oil tank (1). There are multiple low-voltage porcelain bushings (3), and the low-voltage porcelain bushings (3) are all located above the transformer (29) and are electrically connected to the transformer (29).

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