Energy-saving direct current converter transformer

Abstract

This invention discloses an energy-saving DC converter transformer, specifically relating to the field of DC converter transformer technology. It includes a heat sink, a controller, multiple sets of winding coils, an iron core, and a linked leakage flux treatment component. The linked leakage flux treatment component includes an electric cylinder, a push block, a linkage bar, two inclined slots, a connecting post, a guide post, a permalloy outer casing, and a connecting bar. This invention, through its linked leakage flux treatment component, can promptly address leakage flux issues in large areas outside the winding coils, effectively reducing leakage flux, lowering eddy current losses, significantly reducing energy losses in multiple winding coils, and improving the energy-saving performance of the DC converter transformer. This solves the problem of difficulty in timely addressing leakage flux issues in large areas, which leads to significant eddy current losses inside the transformer and significantly reduces the energy-saving performance of the DC converter transformer.

Description

Technical Field

[0001] This invention relates to the field of DC converter transformer technology, and more specifically, to an energy-saving DC converter transformer. Background Technology

[0002] DC converter transformers are the core equipment of DC power transmission systems. Their core function is to convert the high-voltage AC power of the AC grid into low-voltage AC power suitable for the operation of the converter valve through the principle of electromagnetic induction, thereby realizing voltage transformation. The converter valve then efficiently converts the AC power into DC power, thus meeting the needs of long-distance large-capacity power transmission, asynchronous grid interconnection, and renewable energy grid connection.

[0003] In existing published literature, patent publication number CN218513261U discloses a DC converter transformer. This technology ensures normal heat dissipation of the transformer body by opening heat dissipation holes on the side of the casing. At the same time, the casing protects the transformer body from external damage. By using a rain cover in conjunction with a control component, the protective component can be moved up and down, thus blocking the heat dissipation holes on the casing and ensuring the safety of the transformer body inside the casing. However, this technology still has the following drawbacks.

[0004] During the transformation process, DC converter transformers are prone to large-area leakage flux problems in multiple winding coils. It is difficult to quickly and accurately grasp the large-area leakage flux state of each winding coil, and it is difficult to deal with the leakage flux problem in a timely manner. This leads to large eddy current losses in the transformer, which increases the transformer's operating energy consumption and significantly reduces the energy-saving performance of DC converter transformers. Summary of the Invention

[0005] To overcome the aforementioned deficiencies of the prior art, the present invention provides the following technical solution: an energy-saving DC converter transformer, comprising a heat sink and a controller, wherein multiple sets of winding coils are installed inside the heat sink, and each winding coil has an iron core installed inside. A linkage leakage flux treatment component is installed at the bottom of the inner wall of the heat sink; the linkage leakage flux treatment component includes an electric cylinder fixedly installed at the bottom of the inner wall of the heat sink, a push block is fixedly connected to the output end of the electric cylinder, a linkage bar is fixedly connected to the upper surface of the push block, two inclined grooves are formed in the inner wall of the linkage bar, a sleeve post is slidably connected to the inner wall of each inclined groove, a guide post is connected to the inner wall of the sleeve post, and permalloy outer covers are slidably connected to both sides of the winding coils, the outer wall of the permalloy outer cover is provided with a connecting strip, and multiple permalloy outer covers are fixedly connected to the connecting strip.

[0006] Preferably, the two inclined slots are symmetrically arranged about the middle of the linkage bar, wherein the two permalloy outer covers are respectively fixedly connected to the two sleeve posts; both sleeve posts are slidably connected to the guide posts, and the guide posts are slidably connected to the linkage bar. The guide posts are fixedly connected to the heat sink, and the electric cylinder is electrically connected to the controller.

[0007] In operation, the electric cylinder pushes the push block upwards, and the linkage bar moves the two inclined grooves on the inner wall upwards simultaneously. The linkage bar then moves the two connecting posts closer to each other along the inner wall of the inclined grooves. The connecting posts move the permalloy outer cover to the left, and the other connecting post moves the other permalloy outer cover to the right. The permalloy outer covers on both sides of each winding coil come into close contact with each other, and the two permalloy outer covers directly cover the outside of the leakage magnetic winding coil to form a closed state.

[0008] Preferably, the upper and lower surfaces of the permalloy outer cover are provided with permalloy end caps, and the inner wall of the permalloy end cap is provided with a magnetic leakage treatment component; the magnetic leakage treatment component includes a permalloy spacer cover, a permalloy convex cover, a connecting block, and a support column; the permalloy spacer cover is fixed on the inner wall of the permalloy end cap, the permalloy convex cover is fixedly located on the inner wall of the permalloy spacer cover, the connecting block is fixed on one side of the outer wall of the permalloy convex cover, and the support column is fixedly connected between the connecting block and the permalloy spacer cover.

[0009] In use, the leftward movement of the permalloy outer cover causes the permalloy end cover to move to the left, the permalloy spacer cover causes the support column to move to the left, and the connecting block causes the permalloy convex cover to move to the left. The upper permalloy end cover and permalloy spacer cover both cover the magnetic leakage gaps on the upper surface of the winding coils and the iron core, while the upper permalloy convex cover can adhere to the outer wall of the iron core for coverage. The lower permalloy end cover and permalloy spacer cover both cover the magnetic leakage gaps on the lower surface of the winding coils and the iron core. The lower permalloy convex cover also contacts the outer wall of the iron core, achieving synchronous magnetic leakage coverage of multiple winding coils and the upper and lower surfaces of multiple iron cores.

[0010] Preferably, both the permalloy spacer and the permalloy end cap are slidably connected to the winding coil, and the permalloy convex cover is movable and inserted into the iron core. The two permalloy convex covers are symmetrically arranged about the iron core. A spacer strip is provided between each pair of adjacent winding coils; a spacer leakage magnetic flux detection component is installed on the inner wall of the spacer strip near its bottom end; the spacer leakage magnetic flux detection component includes a displacement shaft installed on the inner wall of the spacer strip near its bottom end, both spacer strips are fixedly connected to the displacement shaft, a displacement motor is installed at one end of the displacement shaft, the displacement motor is used to drive the displacement shaft to rotate, and the displacement motor is fixedly connected to the heat sink.

[0011] A guide groove is formed on the inner wall of the spacer sleeve near its top. A slider is slidably connected to the inner wall of the guide groove. Rubber pads are fixedly connected to both sides of the slider. Both rubber pads are slidably connected to the guide groove. A Hall magnetic sensor is fixedly installed on the upper surface of the slider. The Hall magnetic sensor and the positioner motor are electrically connected to the controller. A gap is provided between the iron core and the spacer sleeve. The output end of the positioner motor is fixedly connected to the positioner shaft. The two rubber pads are symmetrically arranged about the slider, and the vertical cross-section of the rubber pads is rectangular. Reinforcing columns are provided on both sides of the electric cylinder. Both reinforcing columns are fixedly connected to the heat sink and the two reinforcing columns are fixedly connected to the guide column. Multiple high-voltage terminals are installed on the upper surface of the heat sink. Multiple low-voltage terminals are provided on one side of the high-voltage terminals. The high-voltage terminals are fixedly connected to the winding coil, and the bottom end of the low-voltage terminals is fixedly connected to the winding coil. A converter valve is installed on one side of the low-voltage terminals, and the controller is fixed to the outer wall of the converter valve.

[0012] When this technology is in use, if the leakage magnetic field detected by the two Hall magnetic sensors exceeds the leakage magnetic field set by the controller, the controller can start the displacement motor. The displacement shaft drives the two spacer strips to rotate 90 degrees clockwise, and the spacer strips are in an inclined state. Under the action of the slider's own counterweight, they slide down the inner wall of the guide groove at an inclination. The slider drives the Hall magnetic sensors to tilt and move downward. The Hall magnetic sensors can detect the leakage magnetic field by tilting and moving downward between the two winding coils. In this way, the Hall magnetic sensors can detect the leakage magnetic field between the two winding coils over a large area.

[0013] The technical effects and advantages of this invention are as follows:

[0014] 1. This invention utilizes a linkage leakage flux treatment component. An electric cylinder pushes a pusher block upwards, causing the linkage bar and the inner wall inclined groove to move upwards simultaneously. This causes two connecting posts to move closer to each other along the inclined groove and guide post. The connecting posts move the permalloy outer cover to the left, and another connecting post moves the other permalloy outer cover to the right. The permalloy outer covers on both sides of each winding coil come into contact with each other, forming a closed state around the outer wall of the winding coil. This allows for timely treatment of leakage flux problems in large areas outside the winding coil. This structure effectively reduces leakage flux, lowers eddy current losses, significantly reduces energy losses in multiple winding coils, achieves high efficiency and energy saving, and improves the energy-saving performance of DC converter transformers.

[0015] 2. This invention employs a magnetic leakage treatment component. When the permalloy outer cover moves to the left, it sequentially drives the permalloy end cover, permalloy spacer cover, support column, connecting block, and permalloy convex cover to the left. The upper permalloy end cover and spacer cover can cover the magnetic leakage gap between the winding coil and the upper surface of the iron core, and the upper permalloy convex cover fits against the outer wall of the iron core. The same structure below covers the magnetic leakage gap on the lower surface. Simultaneous magnetic leakage treatment can be achieved on the upper and lower surfaces of multiple winding coils and multiple iron cores, which can effectively reduce the amount of magnetic leakage, reduce eddy current loss, significantly reduce the energy loss of multiple winding coils, and achieve high efficiency and energy saving.

[0016] 3. This invention employs an intermittent magnetic flux leakage detection component, utilizing two Hall effect magnetic sensors to detect magnetic flux leakage between multiple sets of winding coils. When the amount of magnetic flux leakage exceeds the controller's set value, the controller will activate the displacement motor, driving the displacement shaft to rotate 90 degrees clockwise, causing the spacer sleeve to tilt. Under the action of counterweight, the slider slides down along the guide groove, and the Hall effect magnetic sensors tilt and move downward, achieving large-area detection of magnetic flux leakage. In this way, if the amount of magnetic flux leakage detected by the Hall effect magnetic sensors all exceeds the set value, it is possible to promptly detect a large amount of magnetic flux leakage outside multiple sets of winding coils, which helps to quickly and timely handle magnetic flux leakage problems in large areas.

[0017] Through the interaction of the above-mentioned multiple functions, the Hall magnetic sensor first tilts downwards, promptly detecting significant magnetic leakage on the exterior of multiple winding coils. Secondly, the permalloy outer casings on both sides of each winding coil bring them into close contact, forming a sealed enclosure around the outer wall of the winding coil. This simultaneously achieves magnetic leakage coverage on the upper and lower surfaces of multiple winding coils and multiple iron cores. In summary, this structure effectively reduces large-area magnetic leakage, significantly lowers eddy current losses, and substantially reduces energy losses in multiple winding coils, achieving high efficiency and energy saving, and improving the energy-saving performance of the DC converter transformer. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the energy-saving DC converter transformer of the present invention.

[0019] Figure 2 This is a schematic diagram of the vertical cross-section structure of the energy-saving DC converter transformer of the present invention.

[0020] Figure 3 This is a partial structural diagram of the vertical cross-section at the connection between the heat sink and the guide post of the present invention.

[0021] Figure 4 This is a partial structural diagram of the vertical cross-section of the connection between the connecting strip and the permalloy outer cover of the present invention.

[0022] Figure 5 This is a partial structural diagram of the connection between the permalloy outer cover and the permalloy end cover of the present invention.

[0023] Figure 6 This is a schematic diagram of a partial section of the structure at the connection between the connecting strip and the permalloy end cap of the present invention.

[0024] Figure 7 This is a schematic diagram of the cross-sectional structure of the energy-saving DC converter transformer of the present invention.

[0025] Figure 8 This is a partial structural diagram of the interval magnetic flux leakage detection component of the present invention.

[0026] Figure 9 This is a schematic diagram of a partial structure of the spacer sleeve cut-off part of the present invention.

[0027] The attached diagram is labeled as follows: 1. Heat sink; 2. Winding coil; 3. Iron core; 4. Electric cylinder; 5. Push block; 6. Linkage bar; 7. Inclined groove; 8. Sleeve post; 9. Guide post; 10. Permalloy outer cover; 11. Connecting bar; 12. Permalloy end cover; 13. Permalloy spacer cover; 14. Permalloy convex cover; 15. Connecting block; 16. Support column; 17. Spacer sleeve; 18. Positioning shaft; 19. Positioning motor; 20. Guide inclined groove; 21. Slider; 22. Rubber pad; 23. Hall magnetic sensor; 24. Reinforcing post; 25. High voltage terminal; 26. Low voltage terminal; 27. Converter valve; 28. Controller. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] As attached Figure 1 - Appendix Figure 9 The diagram shows an energy-saving DC converter transformer. This energy-saving DC converter transformer is equipped with a linkage leakage flux treatment component, an interval leakage flux detection component, and a coverage leakage flux treatment component. The configuration of each component can effectively reduce the leakage flux over a large area, reduce a large amount of eddy current loss, significantly reduce the energy loss of multiple winding coils 2, achieve high efficiency and energy saving, and improve the energy-saving performance of the DC converter transformer. The specific structural configuration of each component is as follows.

[0030] In this embodiment, as shown in the appendix Figure 1 - Appendix Figure 5As shown, multiple sets of winding coils 2 are installed inside the heat sink 1. Each winding coil 2 has an iron core 3 installed inside. A linkage leakage magnetic treatment component is installed at the bottom of the inner wall of the heat sink 1. The linkage leakage magnetic treatment component includes an electric cylinder 4 fixedly installed at the bottom of the inner wall of the heat sink 1. A push block 5 is fixedly connected to the output end of the electric cylinder 4. A linkage bar 6 is fixedly connected to the upper surface of the push block 5. Two inclined grooves 7 are opened in the inner wall of the linkage bar 6. A sleeve post 8 is slidably connected to the inner wall of each inclined groove 7. A guide post 9 is connected to the inner wall of the sleeve post 8. Permalloy outer covers 10 are slidably connected to both sides of the winding coil 2. A connecting bar 11 is provided on the outer wall of the permalloy outer cover 10. Multiple permalloy outer covers 10 are fixedly connected to the connecting bar 11. The two inclined grooves 7 are symmetrically arranged about the middle of the linkage bar 6. The two permalloy outer covers 10 are fixedly connected to the two sleeve posts 8 one-to-one. The two sleeve posts 8 are slidably connected to the guide post 9. The guide post 9 is slidably connected to the linkage bar 6. The guide post 9 is fixedly connected to the heat sink 1, and the electric cylinder 4 is electrically connected to the controller 28.

[0031] In this embodiment, as shown in the appendix Figure 5 - Appendix Figure 6 As shown, the upper and lower surfaces of the permalloy outer cover 10 are both provided with permalloy end covers 12. The inner wall of the permalloy end cover 12 is provided with a magnetic leakage treatment component. The magnetic leakage treatment component includes a permalloy spacer cover 13, a permalloy convex cover 14, a connecting block 15, and a support column 16. The permalloy spacer cover 13 is fixed to the inner wall of the permalloy end cover 12, the permalloy convex cover 14 is fixed to the inner wall of the permalloy spacer cover 13, the connecting block 15 is fixed to one side of the outer wall of the permalloy convex cover 14, and the support column 16 is fixedly connected between the connecting block 15 and the permalloy spacer cover 13. Both the permalloy spacer cover 13 and the permalloy end cover 12 are slidably connected to the winding coil 2, and the permalloy convex cover 14 is movable and inserted with the iron core 3. The two permalloy convex covers 14 are symmetrically arranged about the iron core 3.

[0032] In this embodiment, as shown in the appendix Figure 7 - Appendix Figure 9 As shown, a spacer strip 17 is provided between each of two adjacent winding coils 2. A spacer leakage magnetic flux detection component is installed on the inner wall of the spacer strip 17 near its bottom end. The spacer leakage magnetic flux detection component includes a displacement shaft 18 installed on the inner wall of the spacer strip 17 near its bottom end. The displacement shaft 18 is installed on the inner wall of the spacer strip 17 near its bottom end. Both spacer strips 17 are fixedly connected to the displacement shaft 18. A displacement motor 19 is installed at one end of the displacement shaft 18. The displacement motor 19 is used to drive the displacement shaft 18 to rotate. The displacement motor 19 is fixedly connected to the heat sink 1.

[0033] A guide groove 20 is formed on the inner wall of the spacer 17 near its top. A slider 21 is slidably connected to the inner wall of the guide groove 20. Rubber pads 22 are fixedly connected to both sides of the slider 21. Both rubber pads 22 are slidably connected to the guide groove 20. A Hall magnetic sensor 23 is fixedly installed on the upper surface of the slider 21. The Hall magnetic sensor 23 and the positioner motor 19 are electrically connected to the controller 28. A gap is provided between the iron core 3 and the spacer 17. The output end of the positioner motor 19 is fixedly connected to the positioner shaft 18. The two rubber pads 22 are symmetrically arranged about the slider 21, and the vertical cross-section of the rubber pads 22 is rectangular.

[0034] In this embodiment, as shown in the attached figure, both sides of the electric cylinder 4 are provided with reinforcing columns 24, and both reinforcing columns 24 are fixedly connected to the heat sink 1; both reinforcing columns 24 are fixedly connected to the guide column 9, so as to provide support force to the guide column 9 through the reinforcing columns 24 and increase the stability of the guide column 9.

[0035] In this embodiment, as shown in the attached figure, a plurality of high-voltage terminals 25 are installed on the upper surface of the heat sink 1, and a plurality of low-voltage terminals 26 are provided on one side of the high-voltage terminals 25. The high-voltage terminals 25 are fixedly connected to the winding coil 2, and the bottom end of the low-voltage terminals 26 is fixedly connected to the winding coil 2. A converter valve 27 is installed on one side of the low-voltage terminals 26, and a controller 28 is fixed on the outer wall of the converter valve 27 so as to transmit high-voltage AC power to the winding coil 2 through the high-voltage terminals 25. The iron core 3 realizes a closed magnetic circuit with the winding coil 2 and performs coupling operation. After the voltage is reduced by the winding coil 2, the low-voltage AC power is transmitted to the low-voltage terminals 26. The low-voltage terminals 26 are connected to the converter valve 27 to complete the DC-DC converter operation.

[0036] The working principle of the energy-saving DC converter transformer of this invention is as follows:

[0037] Step 1: When using the DC converter transformer, first connect the high-voltage terminal 25 to the high-voltage AC power supply, and then connect it to the DC power supply position through the converter valve 27. In this way, the high-voltage terminal 25 transmits the high-voltage AC power to the winding coil 2. The iron core 3 forms a closed magnetic circuit with the winding coil 2 to perform coupling operation. After the voltage is stepped down by the winding coil 2, the low-voltage AC power is transmitted to the low-voltage terminal 26. The low-voltage terminal 26 is connected to the converter valve 27, which converts the low-voltage AC power into low-voltage DC power, thus completing the DC converter transformer operation.

[0038] Step 2: During large-area gap magnetic leakage detection, two Hall magnetic sensors 23 are used to detect the gap between multiple sets of winding coils 2. When the amount of magnetic leakage sensed by the two Hall magnetic sensors 23 exceeds the amount of magnetic leakage set by the controller 28, the controller 28 can start the displacement motor 19. The displacement motor 19 drives the displacement shaft 18 to rotate 90 degrees clockwise. In this way, the displacement shaft 18 drives the two spacer strips 17 to rotate 90 degrees clockwise, and the spacer strips 17 are tilted.

[0039] Under the force of its own weight, the slider 21 slides down the inner wall of the guide groove 20 at an angle. Simultaneously, the slider 21 causes the two rubber pads 22 to slide down the inner wall of the guide groove 20 at an angle. The slider 21 also causes the Hall magnetic sensor 23 to tilt downwards. This allows the Hall magnetic sensor 23 to detect magnetic leakage between the two winding coils 2. Meanwhile, the rubber pads 22 contact the bottom of the inner wall of the guide groove 20 for cushioning. This allows the Hall magnetic sensor 23 to detect magnetic leakage over a large area between the two winding coils 2. When the magnetic leakage detected by the Hall magnetic sensor 23 exceeds the magnetic leakage threshold set by the controller 28, it indicates that a large amount of magnetic leakage has occurred outside multiple sets of winding coils 2.

[0040] Step 3: During the linkage leakage magnetic field treatment, the electric cylinder 4 is immediately started by the controller 28. The electric cylinder 4 pushes the push block 5 to move upward, the push block 5 drives the linkage bar 6 to move upward, and the linkage bar 6 drives the two inclined grooves 7 on the inner wall to move upward synchronously. The linkage bar 6 drives the two socket posts 8 to move closer to each other along the inner wall of the inclined groove 7. The socket post 8 moves to the left and the other socket post 8 moves to the right. The two socket posts 8 move closer to each other along the outer wall of the guide post 9. The socket post 8 drives the permalloy outer cover 10 to move to the left. The other socket post 8 drives the other permalloy outer cover 10 to move to the right. The permalloy outer cover 10 drives the connecting bar 11 to move to the left. The connecting bar 11 drives the remaining two permalloy outer covers 10 on the right side to move to the left in sync. Due to the symmetrical arrangement, the permalloy outer covers 10 on both sides of each winding coil 2 are close to each other and in contact. Thus, the two permalloy outer covers 10 wrap around the outer wall of the winding coil 2. The two permalloy outer covers 10 directly cover the outside of the leakage magnetic winding coil 2 to form a closed state, which can reduce the leakage magnetic amount, reduce eddy current loss, significantly reduce the energy loss of multiple winding coils 2, and achieve energy saving effect.

[0041] Step 4: During the leakage magnetic field treatment, the leftward movement of the permalloy outer cover 10 simultaneously causes the permalloy end cover 12 to move to the left. The permalloy end cover 12 then causes the permalloy spacer cover 13 to move to the left. The permalloy spacer cover 13 causes the support column 16 to move to the left. The support column 16 then causes the connecting block 15 to move to the left. The connecting block 15 then causes the permalloy convex cover 14 to move to the left. In this way, the upper permalloy end cover 12 and the permalloy spacer cover 13 both cover the leakage magnetic field gaps on the upper surface of the winding coil 2 and the iron core 3, while the upper permalloy convex cover 14 can fit against the outer wall of the iron core 3 for coverage. The lower permalloy end cover 12 and the permalloy spacer cover 13 both cover the leakage magnetic field gaps on the lower surface of the winding coil 2 and the iron core 3. At the same time, the permalloy convex cover 14 below will also contact the outer wall of the iron core 3. In this way, the upper and lower surfaces of multiple winding coils 2 and multiple iron cores 3 can achieve synchronous leakage magnetic coverage treatment, which can reduce the amount of leakage magnetic field, reduce eddy current loss, significantly reduce the energy loss of multiple winding coils 2, and achieve energy saving effect.

[0042] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An energy-saving DC converter transformer, comprising a heat sink (1) and a controller (28), wherein multiple sets of winding coils (2) are installed inside the heat sink (1), and each winding coil (2) has an iron core (3) installed inside, characterized in that: A linkage magnetic flux leakage treatment component is installed at the bottom of the inner wall of the heat sink (1). The linkage leakage magnetic field treatment component includes an electric cylinder (4) fixedly installed at the bottom of the inner wall of the heat sink shell (1). The output end of the electric cylinder (4) is fixedly connected to a push block (5). The upper surface of the push block (5) is fixedly connected to a linkage bar (6). The inner wall of the linkage bar (6) has two inclined grooves (7). The inner wall of each inclined groove (7) is slidably connected to a sleeve post (8). The inner wall of the sleeve post (8) is connected to a guide post (9). Both sides of the winding coil (2) are slidably connected to a permalloy outer cover (10). The outer wall of the permalloy outer cover (10) is provided with a connecting strip (11). Multiple permalloy outer covers (10) are fixedly connected to the connecting strip (11). The permalloy outer cover (10) is provided with permalloy end caps (12) on both the upper and lower surfaces, and the inner wall of the permalloy end caps (12) is provided with a magnetic leakage treatment component. The magnetic flux leakage treatment assembly includes a permalloy spacer (13), a permalloy convex cover (14), a connecting block (15), and a support column (16). The permalloy spacer cover (13) is fixed on the inner wall of the permalloy end cover (12), the permalloy convex cover (14) is fixed on the inner wall of the permalloy spacer cover (13), the connecting block (15) is fixed on one side of the outer wall of the permalloy convex cover (14), and the support column (16) is fixedly connected between the connecting block (15) and the permalloy spacer cover (13). A spacer strip (17) is provided between each of the two adjacent winding coils (2); An inter-spacer magnetic flux leakage detection component is installed on the inner wall of the spacer sleeve (17) and near its bottom end; The interval leakage magnetic field detection assembly includes a displacement shaft (18) installed on the inner wall of the spacer sleeve (17) and near its bottom end. Both spacer sleeves (17) are fixedly connected to the displacement shaft (18). A displacement motor (19) is installed at one end of the displacement shaft (18). The displacement motor (19) is used to drive the displacement shaft (18) to rotate. The displacement motor (19) is fixedly connected to the heat sink (1). A guide groove (20) is provided on the inner wall of the spacer sleeve (17) near its top. A slider (21) is slidably connected to the inner wall of the guide groove (20). Rubber pads (22) are fixedly connected to both sides of the slider (21). Both rubber pads (22) are slidably connected to the guide groove (20). A Hall magnetic sensor (23) is fixedly installed on the upper surface of the slider (21). The Hall magnetic sensor (23) and the displacement motor (19) are electrically connected to the controller (28).

2. The energy-saving DC converter transformer according to claim 1, characterized in that: The two inclined grooves (7) are symmetrically arranged about the middle of the linkage bar (6), and the two permalloy outer covers (10) are respectively fixedly connected to the two sleeve posts (8); Both of the socket posts (8) are slidably connected to the guide post (9), and the guide post (9) is slidably connected to the linkage bar (6).

3. The energy-saving DC converter transformer according to claim 1, characterized in that: The guide post (9) is fixedly connected to the heat sink (1), and the electric cylinder (4) is electrically connected to the controller (28).

4. The energy-saving DC converter transformer according to claim 1, characterized in that: The permalloy spacer cover (13) and the permalloy end cover (12) are slidably connected to the winding coil (2), and the permalloy convex cover (14) is movably inserted into the iron core (3). The two permalloy convex covers (14) are symmetrically arranged about the iron core (3).

5. The energy-saving DC converter transformer according to claim 1, characterized in that: A gap is provided between the iron core (3) and the spacer strip (17), and the output end of the displacement motor (19) is fixedly connected to the displacement shaft (18).

6. The energy-saving DC converter transformer according to claim 1, characterized in that: The two rubber pads (22) are symmetrically arranged about the slider (21), and the vertical cross-sectional shape of the rubber pads (22) is rectangular.

7. The energy-saving DC converter transformer according to claim 1, characterized in that: The electric cylinder (4) is provided with reinforcing columns (24) on both sides, and both reinforcing columns (24) are fixedly connected to the heat sink (1); Both of the reinforcing columns (24) are fixedly connected to the guide column (9).

8. The energy-saving DC converter transformer according to claim 1, characterized in that: The upper surface of the heat sink (1) is equipped with a plurality of high voltage terminals (25), and a plurality of low voltage terminals (26) are provided on one side of the high voltage terminals (25). The high voltage terminals (25) are fixedly connected to the winding coil (2), and the bottom end of the low voltage terminals (26) is fixedly connected to the winding coil (2). A converter valve (27) is installed on one side of the low-voltage terminal (26), and the controller (28) is fixed on the outer wall of the converter valve (27).

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