A transformer power detection device

Abstract

The present invention relates to the technical field of transformer power detection and discloses a transformer power detection device, comprising a transformer, a detection component embedded and fixedly installed in the middle of the top of the transformer, pumping components embedded and fixedly installed on both sides of the detection component at the top of the transformer, a heat dissipation fan movably installed on the top of the detection component, and an indicator light fixedly installed on the top of the transformer. The transformer power detection device is provided with a detection tube, and an inner cavity with air provided in the detection tube is inserted into the transformer oil. The temperature difference between the upper and lower parts of the transformer oil is utilized to cause the air in the inner cavity to expand to different degrees to trigger switches at different heights. The multi-stage switches are connected in parallel and each stage circuit has a resistor. In this way, the parallel connection can be used to reduce the current of the entire circuit and increase the current passing through the dual-output shaft motor, thereby enabling the pumping component to rotate at a higher speed to improve heat dissipation.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer power detection, in particular to a transformer power detection device. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, the secondary coil, and the iron core. It is the basic equipment for power transmission and distribution and is widely used in industry, agriculture, transportation, urban communities, and other fields. Oil-type transformers are a very common type. During use, the transformer oil inside not only plays a very good insulating role, but also can be used to dissipate heat to a certain extent to solve the overheating caused by high-frequency oscillation causing heating of the magnetic core and windings, excessive line current density causing heating of the windings, and high-frequency loss of the magnetic core itself during the use of the transformer. However, there are still some problems with the existing transformers during use, as follows:

[0003] Although existing oil-type transformers can dissipate heat to a certain extent by relying on the internal transformer oil and external fins during use, there is no corresponding effective detection equipment to detect and monitor the internal transformer oil temperature and respond accordingly. This cannot ensure more effective heat dissipation when a fault occurs inside the transformer and the temperature rises rapidly. In addition, the existing transformer oil dissipates heat internally through heat conduction, that is, the hot transformer oil rises to the top and the cold oil sinks to the bottom, forming a natural circulation. However, this heat dissipation method is inefficient and cannot effectively improve the heat dissipation effect, which limits the efficient use of the transformer.

[0004] To this end, we propose a transformer power detection device. Summary of the Invention

[0005] The present invention provides a transformer power detection device, which has the advantages of effectively dissipating heat and improving the use effect of the transformer, and solves the problems raised in the above background technology.

[0006] The present invention provides the following technical solution: a transformer power detection device, comprising a transformer, a detection assembly embedded and fixedly mounted in the middle of the top of the transformer, pumping assemblies embedded and fixedly mounted on both sides of the top of the transformer, a cooling fan movably mounted on the top of the detection assembly, and an indicator light fixedly mounted on the top of the transformer;

[0007] The detection assembly includes a cylinder, a detection tube is fixedly installed at the bottom end of the cylinder, a liquid return pipe is provided at the bottom of the cylinder, a dual-output shaft motor is fixedly installed above the middle part of the interior of the cylinder, a drive structure is fixedly installed on the upper output shaft of the dual-output shaft motor, and a stirring blade is fixedly installed on the lower output shaft of the dual-output shaft motor;

[0008] The pumping assembly comprises an axial flow pump, a driven structure is movably mounted on the top of the axial flow pump, and a pump pipe is fixedly mounted on the bottom of the axial flow pump.

[0009] In a preferred embodiment, the top end of the liquid return pipe is connected to the interior of the cylinder, and the bottom end thereof is inserted into the interior of the transformer, and the stirring blade is arranged to rotate in contact with the interior of the cylinder.

[0010] In a preferred embodiment, the detection tube includes a tube body, an inner cavity is evenly opened inside the tube body from top to bottom, openings are respectively provided on both sides of the middle of the inner cavity, and push pieces are movably provided at the openings, a telescopic rod is movably installed between the opposite surfaces of the two push pieces, a first electrode piece is fixedly installed on the other surface of the two push pieces, and a second electrode piece is fixedly installed at the opening of the inner cavity inside the tube body.

[0011] In a preferred embodiment, the tube body and the inner cavity are both made of non-conductive materials, the upper and lower ends of the push piece are movably connected to the opening of the inner cavity through telescopic sleeves, and the inner cavity is filled with air.

[0012] In a preferred embodiment, the telescopic rod is made of a conductive material, and one side of the second electrode sheet is electrically connected to a wire.

[0013] In a preferred embodiment, the push piece, telescopic rod, first electrode piece and second electrode piece constitute a trigger switch, and the branch where the trigger switch is located and the indicator light and the resistor constitute a detection branch. The detection branches where the trigger switches in multiple inner cavities are located are arranged in parallel, and the whole is connected in series with the dual-output shaft motor and the driving power supply.

[0014] In a preferred embodiment, the driving structure includes a lower disk body, the bottom end of the lower disk body is fixedly connected to the upper output shaft of the dual-output shaft motor, the outer ring of the lower disk body is evenly circumferentially provided with grooves, a short rod is movably embedded in the groove position in the lower disk body, the outer surface of the short rod is located in the lower disk body and is movably sleeved with a spring, an outer end of the short rod is fixedly installed with an arc-shaped rack, and the top of the lower disk body is fixedly installed with an upper disk body.

[0015] In a preferred embodiment, the diameter of the lower disk body is less than or equal to the diameter of the upper disk body, and the driving teeth are evenly spaced circumferentially on the outer surface of the upper disk body. The arc-shaped rack is located at an idle interval position on the upper disk body, and the arc-shaped rack complements the upper disk body to form a circle of continuous driving tooth structure.

[0016] In a preferred embodiment, the bottom end of the driven structure is located in the axial flow pump and is fixedly connected to the impeller shaft therein. The driven structure is composed of two gears with the same diameter stacked one on top of the other.

[0017] The present invention has the following beneficial effects:

[0018] 1. The transformer power detection equipment is provided with a detection tube. An inner cavity with air provided in the detection tube is inserted into the transformer oil. The temperature difference between the upper and lower parts of the transformer oil is used to cause the air in the inner cavity to expand to different degrees to trigger switches at different heights. In addition, an indicator light is connected in series on each switch circuit. The number of indicator lights that light up can more intuitively show whether the current transformer oil temperature has reached a level where the bottom temperature is too high. In this way, when the bottom temperature is too high, it means that the oil temperature inside the entire transformer is very high, which can effectively alert maintenance personnel. In addition, the multi-stage switches are connected in parallel and there is a resistor in each stage circuit. In this way, the current of the entire circuit can be reduced in parallel and the current passing through the dual-output shaft motor can be increased, thereby enabling the pumping component to rotate at a higher speed to improve heat dissipation.

[0019] 2. The transformer power detection equipment utilizes a short rod and a spring to intermittently drive the driven structure to rotate when the driving structure as a whole rotates at a low speed by utilizing the teeth and grooves arranged at intervals on the upper disk body. In this way, the pump pipe can intermittently adsorb the transformer oil outward. When the temperature is too high and the current through the dual-output shaft motor increases, its faster rotation speed can cause the arc-shaped rack that complements the teeth and grooves arranged at intervals on the upper disk body to expand outward under the action of centrifugal force, thereby making the rotational driving effect of the driving structure on the driven structure continuous, thereby driving the axial flow pump to rotate continuously, thereby extracting the internal transformer oil from the transformer and sending it to the inside of the cylinder, and utilizing the rotation of the stirring blades to stir the transformer oil in the cylinder, thereby accelerating the heat conduction of the transformer oil, and thus dissipating the heat of the transformer as a whole in a targeted and more effective manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the connection between the detection component and the pump suction component of the present invention;

[0022] Figure 3This is a schematic cross-sectional view of the detection assembly of the present invention;

[0023] Figure 4 This is a schematic diagram of the partial three-dimensional structure of the internal part of the detection component of the present invention;

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the detection tube of the present invention;

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at A in the middle;

[0026] Figure 7 This is a schematic diagram of the detection control circuit structure of the present invention.

[0027] In the figure: 1. Transformer; 2. Detection component; 21. Cylinder; 22. Detection tube; 221. Tube body; 222. Inner cavity; 223. Push piece; 224. Telescopic rod; 225. First electrode sheet; 226. Second electrode sheet; 23. Liquid return pipe; 24. Dual-output shaft motor; 25. Drive structure; 251. Lower disk; 252. Short rod; 253. Spring; 254. Arc rack; 255. Upper disk; 26. Stirring blade; 3. Pumping component; 31. Axial flow pump; 32. Driven structure; 33. Pump pipe; 4. Cooling fan; 5. Indicator light. DETAILED DESCRIPTION

[0028] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The transformer power detection device involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work fall within the scope of protection of the present invention.

[0029] See also Figure 1 A transformer power detection device includes a transformer 1, a detection component 2 is embedded and fixedly installed in the middle of the top of the transformer 1, a pumping component 3 is embedded and fixedly installed on both sides of the top of the transformer 1, a cooling fan 4 is movably installed on the top of the detection component 2, and an indicator light 5 is fixedly installed on the top of the transformer 1;

[0030] Compared with the prior art, the present application is provided with a detection tube 22, and an inner cavity 222 with air provided in the detection tube 22 is inserted into the transformer oil, and the temperature difference between the upper and lower parts of the transformer oil is used to make the air in the inner cavity 222 expand to different degrees to trigger switches at different heights, and an indicator light 5 is connected in series on each level of the switch circuit. The number of indicator lights 5 that light up can more intuitively show whether the current transformer oil temperature has reached the level where the bottom temperature is too high. In this way, when the bottom temperature is too high, it means that the oil temperature inside the entire transformer is very high, which can well remind the maintenance personnel, and the multi-level switches are connected in parallel and there is a resistor in each level of the circuit, so that the current of the entire circuit can be reduced in parallel and the current passing through the dual output shaft motor 24 can be increased, so that the pump suction component 3 can rotate at a higher speed to improve heat dissipation, and at the same time, by using the short rod 252 The use of the spring 253 allows the driving structure 25 as a whole to intermittently drive the driven structure 32 to rotate by utilizing the teeth and grooves arranged at intervals on the upper disk body 255 when rotating at a low speed, so that the pump pipe 33 can intermittently adsorb the transformer oil outward. When the temperature is too high and the current passing through the dual-output shaft motor 24 becomes larger, its faster rotation speed can cause the arc-shaped rack 254 that complements the teeth and grooves arranged at intervals on the upper disk body 255 to expand outward under the action of centrifugal force, thereby making the driving effect of the driving structure 25 as a whole on the driven structure 32 continuous, thereby driving the axial flow pump 31 to rotate continuously, thereby extracting the internal transformer oil from the transformer and sending it to the inside of the cylinder 21, and utilizing the rotation of the stirring blades 26 to make the transformer oil in the cylinder 21 in a stirring state, thereby accelerating the heat conduction of the transformer oil, and thus more effectively dissipating heat from the transformer as a whole.

[0031] See also Figure 1-3 A transformer power detection device includes a detection assembly 2, which includes a cylinder 21. A detection tube 22 is fixedly installed at the bottom end of the cylinder 21. A liquid return pipe 23 is provided at the bottom of the cylinder 21. A dual-output shaft motor 24 is fixedly installed above the middle portion of the cylinder 21. A drive structure 25 is fixedly installed on the output shaft above the dual-output shaft motor 24. A stirring blade 26 is fixedly installed on the output shaft below the dual-output shaft motor 24.

[0032] In this embodiment, it should be noted that the top end of the liquid return pipe 23 is connected to the interior of the cylinder 21, and the bottom end thereof is inserted into the interior of the transformer 1. The stirring blades 26 are arranged to rotate in contact with the interior of the cylinder 21. In this way, the rotation of the stirring blades 26 can be used to stir the transformer oil pumped into the cylinder 21 to improve its heat dissipation efficiency, thereby accelerating the heat dissipation of the transformer as a whole. The transformer oil after heat dissipation can be returned to the interior of the transformer through the liquid return pipe 23 for use.

[0033] See also Figure 3、 Figure 5 、 Figure 6 and Figure 7 A transformer power detection device includes a detection tube 22, which includes a tube body 221. An inner cavity 222 is evenly formed inside the tube body 221 from top to bottom. Openings are respectively provided on both sides of the middle of the inner cavity 222, and push pieces 223 are movably provided at the openings. A telescopic rod 224 is movably installed between the opposing surfaces of the two push pieces 223. A first electrode piece 225 is fixedly installed on the other surface of the two push pieces 223. A second electrode piece 226 is fixedly installed inside the tube body 221 at the opening of the inner cavity 222.

[0034] In this embodiment, it should be noted that the tube body 221 and the inner cavity 222 are both made of non-conductive materials, and the upper and lower ends of the push piece 223 are movably connected to the opening of the inner cavity 222 through a telescopic sleeve. The inner cavity 222 is filled with air, and the telescopic rod 224 is made of conductive material. One side of the second electrode piece 226 is electrically connected to a wire. The push piece 223, the telescopic rod 224, the first electrode piece 225 and the second electrode piece 226 constitute a trigger switch, and the branch where the trigger switch is located constitutes a detection branch with the indicator light 5 and the resistor. The detection branches where the trigger switches in the multiple inner cavities 222 are located are arranged in parallel, and the whole is connected in series with the dual-output shaft motor 24 and the drive power supply. In this way, when the oil inside the transformer 1 heats up, the hot oil will float upward in the transformer 1, so that the oil temperature at the top of the transformer 1 will be higher than that at the bottom, and then the oil in the upper high-oil-temperature part will be higher. The air inside the inner cavity 222 will expand to a greater extent. When it expands to the point that the first electrode piece 225 and the second electrode piece 226 are in contact with each other, the conductive circuit of the dual-output shaft motor 24 is turned on, so that the dual-output shaft motor 24 can be started to rotate, thereby driving the top cooling fan 4 to rotate to assist in heat dissipation. The trigger switch is set to a double-head trigger structure to avoid the vibration generated by the transformer during normal use, which may cause the circuit of the dual-output shaft motor 24 to be accidentally touched and turned on. Even if vibration exists, such a structure can only make the first electrode piece 225 and the second electrode piece 226 on one side fit together, which cannot turn on the circuit of the dual-output shaft motor 24. Only by using the expansion of the air in the inner cavity 222 to make the first electrode piece 225 and the second electrode piece 226 on both sides contact at the same time can it be turned on, thereby improving the reliability of the use of this structure.

[0035] See also Figure 2-4A transformer power detection device includes a drive structure 25, which includes a lower disk 251. The bottom end of the lower disk 251 is fixedly connected to the upper output shaft of the dual-output shaft motor 24. The outer ring of the lower disk 251 is evenly circumferentially provided with grooves. A short rod 252 is movably embedded in the groove position in the lower disk 251. The outer surface of the short rod 252 is located in the lower disk 251 and is movably sleeved with a spring 253. An arc-shaped rack 254 is fixedly installed on one end of the short rod 252. The top of the lower disk 251 is fixedly installed with an upper disk 255.

[0036] In this embodiment, it should be noted that the diameter of the lower disc 251 is less than or equal to the diameter of the upper disc 255, and the outer surface of the upper disc 255 is circumferentially evenly spaced with drive teeth, and the arc-shaped rack 254 is located at an idle interval position on the upper disc 255, and the arc-shaped rack 254 and the upper disc 255 complement each other to form a circle of continuous drive tooth structure. In this way, as the temperature of the transformer oil gradually increases, the total resistance value in the circuit where the dual-output shaft motor 24 is located gradually decreases, so that the current on the dual-output shaft motor 24 gradually increases, the speed gradually increases, and then the speed of the lower disc 251 becomes higher and higher. When the speed does not reach the point where the arc-shaped rack 254 contacts the driven structure 32, , only the drive teeth arranged at intervals on the upper disk body 255 will intermittently drive the axial flow pump 31 to start, thereby pumping the internal hydraulic oil upward but not pumping it out. When the speed reaches a point where the arc-shaped rack 254 contacts the driven structure 32, it will cooperate with the upper disk body 255 to form a continuous rotation driving effect on the driven structure 32, so that the axial flow pump 31 can rotate continuously, and then pump the transformer oil into the cylinder 21. The stirring and rotating action of the stirring blades 26 accelerates the heat dissipation of the transformer oil, thereby improving the overall heat dissipation effect of the transformer 1. In this way, automatic detection and adjustment of the heat dissipation efficiency of the transformer are achieved, thereby improving the use effect of the existing transformer.

[0037] See also Figure 1-2 A transformer power detection device includes a pumping assembly 3, the pumping assembly 3 includes an axial flow pump 31, a driven structure 32 is movably installed on the top of the axial flow pump 31, and a pump pipe 33 is fixedly installed on the bottom of the axial flow pump 31;

[0038] In this embodiment, it should be noted that a liquid outlet pipe is provided at the top of the axial flow pump 31 and is connected to the interior of the cylinder 21. The bottom end of the driven structure 32 is located in the axial flow pump 31 and is fixedly connected to the impeller shaft inside the axial flow pump 31. The driven structure 32 is composed of two gears of the same diameter stacked up and down. In this way, under the action of the driving structure 25, the pumping condition of the axial flow pump 31 can be automatically controlled by the high and low speed. When the transformer oil temperature does not reach the overheating condition, the driving structure 25 will rotate at a low speed, and then intermittently drive the driven structure 32 to rotate, so that the transformer oil is pumped but not pumped out. When the temperature reaches the overheating condition, the driving structure 25 will rotate at a high speed. In this way, the high-speed rotation of the driving structure 25 will cause the axial flow pump 31 to rotate continuously, thereby realizing the pumping of the transformer oil into the cylinder 21 for efficient heat dissipation, so as to improve the overall heat dissipation efficiency of the transformer 1.

[0039] A transformer power detection device mainly includes two parts: oil temperature detection and oil temperature heat dissipation, wherein:

[0040] The oil temperature detection utilizes the heat of the transformer oil to heat the air inside the inner cavity 222, causing the air to expand. Since the oil at a high temperature will float, different oil temperatures will trigger trigger switches of different magnitudes, and the indicator light 5 will light up accordingly to provide a detection prompt.

[0041] Oil temperature heat dissipation is to use the structure triggered by the result of oil temperature detection to start the dual-output shaft motor 24, and the rotation of the dual-output shaft motor 24 drives the driving structure 25 to rotate as a whole. When the oil temperature does not reach the overheating level, the rotation of the driving structure 25 will cause the upper disk 255 to intermittently drive the driven structure 32 to rotate, thereby causing the axial flow pump 31 to intermittently start pumping the transformer oil. When the oil temperature reaches the overheating level, multiple orders of magnitude of trigger switches will be triggered. When the number of trigger switches triggered is greater than or equal to three, it will default to an overheating state. At the same time, the current passing through the dual-output shaft motor 24 will increase as the number of trigger switches turned on increases, thereby increasing the speed. In this way, the arc-shaped rack 254 will cooperate with the upper disk 255 to continuously rotate the driven structure 32, thereby realizing the continuous rotation of the axial flow pump 31, pumping the transformer oil into the cylinder 21, and using the synchronous rotation of the stirring blades 26 to accelerate the heat dissipation of the transformer oil, and then return it to the transformer 1 through the return pipe 23 for continued use.

[0042] It should be noted that the overheating state can be determined based on the thermal expansion coefficient of air and the operating temperature range required by the transformer in the prior art. This is a result that can be obtained in the prior art and will not be described in detail in this application.

[0043] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A transformer power detection device, comprising a transformer (1), characterized in that: A detection component (2) is embedded and fixedly installed in the middle of the top of the transformer (1); pumping components (3) are embedded and fixedly installed on both sides of the top of the transformer (1) located on the detection component (2); a cooling fan (4) is movably installed on the top of the detection component (2); and an indicator light (5) is fixedly installed on the top of the transformer (1); The detection assembly (2) comprises a cylinder (21), a detection tube (22) is fixedly mounted on the bottom end of the cylinder (21), a liquid return pipe (23) is provided at the bottom of the cylinder (21), a dual-output shaft motor (24) is fixedly mounted above the middle portion of the cylinder (21), a driving structure (25) is fixedly mounted on the upper output shaft of the dual-output shaft motor (24), and a stirring blade (26) is fixedly mounted on the lower output shaft of the dual-output shaft motor (24); The pumping assembly (3) comprises an axial flow pump (31), a driven structure (32) is movably mounted on the top of the axial flow pump (31), and a pump pipe (33) is fixedly mounted on the bottom of the axial flow pump (31); The detection tube (22) includes a tube body (221), an inner cavity (222) is uniformly opened from top to bottom inside the tube body (221), openings are respectively provided on both sides of the middle of the inner cavity (222), and push pieces (223) are movably provided at the openings, a telescopic rod (224) is movably installed between the opposite surfaces of the two push pieces (223), a first electrode piece (225) is fixedly installed on the other surface of the two push pieces (223), and a second electrode piece (226) is fixedly installed inside the tube body (221) at the opening of the inner cavity (222); The push piece (223), the telescopic rod (224), the first electrode piece (225) and the second electrode piece (226) constitute a trigger switch, and the branch where the trigger switch is located, the indicator light (5) and the resistor constitute a detection branch. The detection branches where the trigger switches are located in the multiple inner cavities (222) are arranged in parallel, and the whole is connected in series with the dual-output shaft motor (24) and the driving power supply. The driving structure (25) includes a lower disk body (251), the bottom end of the lower disk body (251) is fixedly connected to the upper output shaft of the dual-output shaft motor (24), the outer ring of the lower disk body (251) is uniformly provided with grooves in the circumferential direction, a short rod (252) is movably embedded in the groove position in the lower disk body (251), the outer surface of the short rod (252) is located in the lower disk body (251) and is movably sleeved with a spring (253), an outer end of the short rod (252) is fixedly installed with an arc-shaped rack (254), and the top end of the lower disk body (251) is fixedly installed with an upper disk body (255); When the transformer oil temperature does not reach the level of overheating, the rotation of the driving structure (25) causes the upper disk (255) to intermittently drive the driven structure (32) to rotate, thereby causing the axial flow pump (31) to intermittently start pumping the transformer oil; When the transformer oil temperature reaches an overheated level, the arc-shaped rack (254) cooperates with the upper disk (255) to continuously rotate the driven structure (32), thereby realizing the continuous rotation of the axial flow pump (31), pumping the transformer oil into the cylinder (21), and utilizing the synchronous rotation of the stirring blades (26) to accelerate the heat loss of the transformer oil, and then the oil flows back to the transformer (1) through the return pipe (23) for continued use.

2. A transformer power detection device according to claim 1, characterized in that: The top end of the liquid return pipe (23) is connected to the interior of the cylinder (21), and the bottom end thereof is inserted into the interior of the transformer (1). The stirring blade (26) is arranged to rotate in contact with the interior of the cylinder (21).

3. The transformer power detection device according to claim 2, characterized in that: The tube body (221) and the inner cavity (222) are both made of non-conductive materials, and the upper and lower ends of the push piece (223) are movably connected to the opening of the inner cavity (222) through telescopic sleeves, respectively. The inner cavity (222) is filled with air.

4. The transformer power detection device according to claim 3, characterized in that: The telescopic rod (224) is made of a conductive material, and one side of the second electrode sheet (226) is electrically connected to a wire.

5. The transformer power detection device according to claim 4, characterized in that: The diameter of the lower disc (251) is less than or equal to the diameter of the upper disc (255), and driving teeth are evenly spaced circumferentially arranged on the outer side surface of the upper disc (255). The arc-shaped rack (254) is arranged at an idle interval position on the upper disc (255), and the arc-shaped rack (254) and the upper disc (255) complement each other to form a circle of continuous driving tooth structure.

6. The transformer power detection device according to claim 1, characterized in that: The bottom end of the driven structure (32) is located in the axial flow pump (31) and is fixedly connected to the impeller shaft inside the axial flow pump (31). The driven structure (32) is composed of two gears with the same diameter stacked up and down.

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