Dry-type transformer with connection port protection

Abstract

This invention relates to the field of dry-type transformers, specifically a dry-type transformer with connection port protection, including a transformer section. The transformer section has three sets of low-voltage stabilizing sections externally, each containing an oil reservoir. Each oil reservoir also contains a connecting energizing section. The transformer section has a high-voltage connecting section externally. By filling the oil reservoir's oil trough with insulating oil, the connection between the low-voltage connecting piece and the energizing block is directly wrapped. The high dielectric properties of the insulating oil prevent leakage risks. Simultaneously, the buffer springs and buffer pads on the spacer block form an elastic buffer mechanism that absorbs vibration energy during transformer operation, reduces mechanical wear on the connection points, and resists vibration impact. This prevents external vibration from causing the low-voltage connection points to gradually loosen, while vibration also allows dust to adhere to the connection points, exacerbating poor contact problems under these dual effects.

Description

Technical Field

[0001] This invention relates to the field of dry-type transformers, specifically a dry-type transformer with connection port protection. Background Technology

[0002] With the acceleration of social industrialization and the continuous increase in residential electricity demand, the stability and reliability of the power system have become core elements to ensure production and daily life. As a key piece of equipment in the power transmission and distribution process, dry-type transformers are widely used in various important places such as high-rise buildings, airports, docks, data centers, and photovoltaic power stations due to their advantages such as oil-free design, excellent fire resistance, and convenient maintenance. They undertake the core functions of voltage regulation and power conversion. In the overall structure of a dry-type transformer, the connection port is the key node for connecting the windings to the external circuit and regulating the voltage. Its operating status directly determines the safety and stability of the transformer and even the entire power link. In order to maintain the normal operation of dry-type transformers, a dry-type transformer with connection port protection is needed.

[0003] Currently, most dry-type transformers are installed indoors. However, the continuous vibration generated by the operation of equipment in places such as airports and docks can cause the low-voltage terminals to gradually loosen. At the same time, the vibration can cause dust to adhere to the terminals, which can exacerbate poor contact. This not only requires frequent maintenance by workers, but may also affect the normal power supply of the equipment, increasing maintenance costs and labor intensity. In addition, high-voltage terminals are usually directly fixed by bolts, which have poor self-locking properties, making them susceptible to loosening due to environmental and equipment vibrations, thus affecting the normal operation of the circuit. Summary of the Invention

[0004] The purpose of this invention is to provide a dry-type transformer with connection port protection, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dry-type transformer with connection port protection, comprising a transformer section, three sets of low-voltage stabilizing sections are provided on the outside of the transformer section, each of the three sets of low-voltage stabilizing sections includes two low-voltage connecting plates, and a fixing plate is provided on the outside of the two low-voltage connecting plates; an oil storage section is provided inside each of the three sets of low-voltage stabilizing sections, each of the three sets of oil storage sections includes two oil storage blocks, a sealing cover plate is fixedly connected to the top of each of the two oil storage blocks, two docking slots are provided on each of the two sealing cover plates, and a connecting screw is rotatably connected inside each of the two sealing cover plates; a docking energizing section is provided inside each of the oil storage sections, the docking energizing section includes two energizing blocks, two internal adjustment slots are provided on each of the two energizing blocks, and a locking plug is threadedly connected inside each of the four internal adjustment slots; a high-voltage connecting section is provided on the outside of the transformer section.

[0006] Preferably, the transformer section includes a fixed base frame, and three sets of winding bodies are fixedly connected to the top of the fixed base frame. Each of the three sets of winding bodies is provided with a high-voltage winding and a low-voltage winding. A high-voltage terminal is fixedly connected to the outer wall of each of the three sets of winding bodies, and a frustum-shaped clamp is provided at the end of the high-voltage terminal.

[0007] Preferably, two top mounting plates are fixedly connected to the top of the three sets of winding bodies. The two top mounting plates are respectively disposed on the high-voltage side and the low-voltage side of the three sets of winding bodies. Three high-voltage terminals are fixedly connected to the high-voltage winding of the corresponding winding body.

[0008] Preferably, both low-voltage terminals are electrically connected to the low-voltage windings in the corresponding winding bodies. Both low-voltage terminals are provided with an inner insertion end. A stable through hole is opened in the middle position of both low-voltage terminals. A mating insertion hole is opened on the inner insertion end of both low-voltage terminals. The fixing piece is fixedly connected to the top mounting plate on the corresponding low-voltage side.

[0009] Preferably, a locking bolt is fixedly connected to the fixing plate, and the locking bolt is inserted into the two corresponding stabilizing through holes. The locking bolt is configured as a threaded rod structure, and two spacer blocks are threadedly connected to the locking bolt. The two spacer blocks are both located below the inner insertion end of the corresponding low-voltage terminal piece. A buffer spring is fixedly connected to the outer wall of each of the two spacer blocks, and a buffer pad is fixedly connected to the top of each of the two buffer springs. A circular insertion hole is opened on each of the two buffer pads.

[0010] Preferably, both oil storage blocks are disposed on the top of the corresponding buffer pads, and both oil storage blocks are provided with inserts at the bottom for insertion into the corresponding buffer pad holes. Both oil storage blocks have oil grooves inside, and both sealing covers have shaft holes. Corresponding low-voltage connector inserts are fixedly inserted into the mating slots on the same side of both sealing covers.

[0011] Preferably, both of the power-conducting blocks are fixedly connected to the bottom of the corresponding sealing cover plate. Each of the two power-conducting blocks has two power-conducting grooves. Corresponding low-voltage connector inserts are fixedly inserted into the power-conducting grooves on the same side of the two power-conducting blocks. The four internal adjustment grooves are all threaded grooves. The four locking plugs are all inserted into the corresponding mating holes. The four locking plugs are provided with hexagonal prism grooves.

[0012] Preferably, each of the four power-conducting slots is connected to a through hole, and a corresponding locking block is inserted into each of the four through holes. Each of the two power-conducting blocks has a connecting locking groove, and a corresponding connecting screw is threaded into each of the two connecting locking grooves. In addition, an external conductive plate is fixedly inserted into each of the two power-conducting slots on the same side. Each of the two external conductive plates is inserted into a corresponding docking slot, and a fixing hole is opened on each of the two fixing holes. A corresponding locking block is inserted into each of the two fixing holes.

[0013] Preferably, the high-voltage wiring section includes three connecting rods, each of the two ends of the three connecting rods is fixedly connected to a locking connector, each of the six locking connectors is fixedly connected to a constraint sleeve, each of the six constraint sleeves is fitted onto the corresponding high-voltage wiring terminal clip, and each of the six constraint sleeves is fixedly connected to a circumferentially distributed inward-facing clip.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. Immerse the connection parts of the low-voltage connector, external conductive plate, and energized contact block in insulating oil to isolate them from external substances. Connect the oil reservoir block to the sealing cover plate with screws, and then connect the oil reservoir block to the buffer gasket. By filling the oil reservoir block with insulating oil, the connection parts of the low-voltage connector and energized contact block are directly wrapped. The high dielectric properties of the insulating oil block block leakage risk and prevent moisture, dust, and other impurities from entering the contact interface, effectively protecting the connection port. At the same time, the buffer spring and buffer gasket on the spacer block form an elastic buffer mechanism that absorbs the vibration energy of the transformer during operation, reduces mechanical wear of the connection parts, and resists vibration impact. This prevents the connection parts of the low-voltage connector from gradually loosening due to external vibration. Vibration can also cause dust to adhere to the connection points, which can exacerbate poor contact. This not only requires frequent maintenance by workers but may also affect the normal power supply of the equipment, increasing maintenance costs and labor intensity.

[0016] 2. Place the constraint sleeve over the frustum-shaped clip on the high-voltage terminal. A tight fit is achieved through the elastic contraction of the inward-folding clip. At the same time, use bolts to fix the locking connector to the high-voltage terminal to ensure a reliable connection. This avoids the problem that high-voltage wiring rods are usually directly fixed with bolts, which have poor self-locking properties and are easily loosened by environmental and equipment vibrations, thus affecting the normal operation of the circuit. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional assembly structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the three-dimensional assembly structure from below according to the present invention;

[0019] Figure 3 This is an exploded structural diagram of the present invention;

[0020] Figure 4 This is an exploded bottom view schematic diagram of the structure of the present invention;

[0021] Figure 5 This is a partial cross-sectional view of the present invention;

[0022] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of part A is shown.

[0023] Figure 7 For the present invention Figure 5 A schematic diagram of the enlarged structure of section B is shown.

[0024] Figure 8 This is a schematic diagram of the transformer assembly structure of the present invention;

[0025] Figure 9 This is a schematic diagram of the assembly structure of the low-pressure stabilizing part of the present invention;

[0026] Figure 10 This is a schematic diagram of the assembly structure of the oil storage section of the present invention;

[0027] Figure 11 This is a schematic diagram of the assembly structure of the docking and energizing part of the present invention;

[0028] Figure 12 This is a schematic diagram of the assembly structure of the high-voltage wiring section of the present invention;

[0029] Figure 13 This is a schematic diagram of the assembly structure of the low-pressure stabilizing part, the oil storage part, and the docking and energizing part of the present invention;

[0030] Figure 14 For the present invention Figure 13 A schematic diagram of the enlarged structure of section C.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Transformer section; 101. Fixed base frame; 102. Winding body; 103. High-voltage terminal; 104. Top mounting plate; 105. High-voltage terminal; 2. Low-voltage stabilizing section; 201. Low-voltage terminal piece; 202. Stabilizing through hole; 203. Connecting socket; 204. Fixing piece; 205. Locking bolt; 206. Spacer block; 207. Buffer spring; 208. Buffer pad; 3. Oil reservoir; 301. Oil reservoir block; 302. Oil trough 303. Sealing cover plate; 304. Docking slot; 305. Connecting screw; 4. Docking power supply part; 401. Power supply block; 402. Power supply groove; 403. Inner adjustment groove; 404. Locking block; 405. Docking through hole; 406. Connecting lock groove; 407. External conductive plate; 408. Fixing socket; 5. High voltage wiring part; 501. Connecting guide rod; 502. Locking connector; 503. Restraint cover; 504. Inner card. Detailed Implementation

[0033] 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.

[0034] Example 1: Please refer to Figure 1 - Figure 14 A dry-type transformer with connection port protection includes a transformer section 1. The transformer section 1 has three sets of low-voltage stabilizing sections 2 on its exterior. Each of the three sets of low-voltage stabilizing sections 2 includes two low-voltage connecting pieces 201. A fixing piece 204 is provided on the outer side of each of the two low-voltage connecting pieces 201. Each of the three sets of low-voltage stabilizing sections 2 has an oil storage section 3 inside. Each of the three sets of oil storage sections 3 includes two oil storage blocks 301. A sealing cover plate 303 is fixedly connected to the top of each of the two oil storage blocks 301. Two mating slots 304 are provided on each of the two sealing cover plates 303. A connecting screw 305 is rotatably connected inside each of the two sealing cover plates 303. Each of the oil storage sections 3 has a mating energizing section 4 inside. The mating energizing section 4 includes two energizing blocks 401. Two internal adjusting grooves 403 are provided on each of the four internal adjusting grooves 403. A locking plug 404 is threadedly connected inside each of the four internal adjusting grooves 403. A high-voltage connecting section 5 is provided outside the transformer section 1.

[0035] The transformer unit 1 includes a fixed base frame 101. Three sets of winding bodies 102 are fixedly connected to the top of the fixed base frame 101. Each of the three sets of winding bodies 102 is provided with a high voltage winding and a low voltage winding. A high voltage terminal 103 is fixedly connected to the outer wall of each of the three sets of winding bodies 102. A frustum-shaped clamp is provided at the end of the high voltage terminal 103.

[0036] Two top mounting plates 104 are fixedly connected to the top of the three winding bodies 102. The two top mounting plates 104 are respectively set on the high voltage side and the low voltage side of the three winding bodies 102. Three high voltage terminals 105 are fixedly connected to the high voltage side top mounting plate 104. The three high voltage terminals 105 are electrically connected to the high voltage windings of the corresponding winding bodies 102.

[0037] Both low-voltage terminals 201 are electrically connected to the low-voltage windings in the corresponding winding bodies 102. Both low-voltage terminals 201 are provided with an inner insertion end. Both low-voltage terminals 201 are provided with a stable through hole 202 in the middle position. Both low-voltage terminals 201 are provided with a mating insertion hole 203 in the inner insertion end. The fixing piece 204 is fixedly connected to the corresponding low-voltage side top plate 104.

[0038] A locking bolt 205 is fixedly connected to the fixing plate 204. The locking bolt 205 is inserted into two corresponding stable through holes 202. The locking bolt 205 is configured as a threaded rod structure. Two spacer blocks 206 are threadedly connected to the locking bolt 205. Both spacer blocks 206 are located below the inner end of the corresponding low-voltage terminal piece 201. A buffer spring 207 is fixedly connected to the outer wall of each of the two spacer blocks 206. A buffer pad 208 is fixedly connected to the top of each of the two buffer springs 207. A circular insertion hole is opened on each of the two buffer pads 208.

[0039] Both oil storage blocks 301 are set on the top of the corresponding buffer pads 208. Both oil storage blocks 301 have inserts at the bottom for insertion into the corresponding buffer pads 208. Both oil storage blocks 301 have oil grooves 302 inside. Both sealing plates 303 have shaft holes. Both sealing plates 303 have corresponding low-voltage connectors 201 inserted into the mating slots 304 on the same side.

[0040] Two power-conducting blocks 401 are fixedly connected to the bottom of the corresponding sealing cover plate 303. Two power-conducting slots 402 are opened on each of the two power-conducting blocks 401. The corresponding low-voltage connector 201 is fixedly inserted into the power-conducting slots 402 on the same side of the two power-conducting blocks 401. The four internal adjustment slots 403 are all set as threaded grooves. The four locking plugs 404 are all inserted into the corresponding mating holes 203. The four locking plugs 404 are provided with hexagonal prism grooves.

[0041] Each of the four power-conducting slots 402 is connected to a mating through hole 405. Each of the four mating through holes 405 has a corresponding locking block 404 inserted inside. Each of the two power-conducting blocks 401 has a connecting locking groove 406. Each of the two connecting locking grooves 406 has a corresponding connecting screw 305 threaded inside. In addition, each of the two power-conducting slots 402 on the same side has an external conductive plate 407 fixedly inserted inside. Each of the two external conductive plates 407 is inserted inside a corresponding mating slot 304. Each of the two external conductive plates 407 has a fixing insertion hole 408. Each of the two fixing insertion holes 408 has a corresponding locking block 404 inserted inside.

[0042] In this embodiment, two spacer blocks 206 are threaded onto the locking bolt 205 to separate the low-voltage connector 201. The two energized connectors 401 are aligned with the mounting positions at the bottom of the sealing cover 303. The connecting screw 305 is rotated to thread it into the connecting lock groove 406, ensuring a stable connection between the energized connector 401 and the sealing cover 303, and aligning the mating slot 304 with the energized groove 402. Then, the inner insertion end of the low-voltage connector 201 is connected to the outer conductive plate 40. 7. Insert the locking plug 404 into the corresponding mating slot 304 and the power-conducting slot 402 respectively, and align the fixing socket 408, the mating socket 203 and the inner adjustment slot 403. Then, control the locking plug 404 with external tools to make it insert into the fixing socket 408 and the mating socket 203, thereby fixing the low-voltage connector 201 and the external conductive plate 407 by locking the plug 404. Then, inject insulating oil into the oil tank 302 and connect the low-voltage connector 201, the external conductive plate 407 and the power-conducting plug. The connection part of 401 is immersed in insulating oil to isolate external substances. The oil storage block 301 is connected to the sealing cover plate 303 by screws. Then, the oil storage block 301 is connected to the buffer gasket 208. By filling the oil groove 302 of the oil storage block 301 with insulating oil, the connection part between the low-voltage terminal piece 201 and the energized terminal block 401 is directly wrapped. The high dielectric properties of the insulating oil block the risk of leakage and prevent moisture, dust and other impurities from entering the contact interface, effectively protecting the connection port. At the same time, the buffer spring 207 on the spacer block 206 and the buffer gasket 208 form an elastic buffer mechanism, which can absorb the vibration energy of the transformer during operation, reduce the mechanical wear of the connection part, resist vibration impact, and prevent the connection part of the low-voltage terminal from gradually loosening due to external vibration. Vibration can also cause dust to adhere to the connection point, which will aggravate poor contact under the dual effect. This not only requires frequent maintenance by workers, but may also affect the normal power supply of the equipment, increasing maintenance costs and labor intensity.

[0043] Example 2, please refer to Figure 1 - Figure 14The high-voltage wiring section 5 includes three connecting rods 501. Each end of the three connecting rods 501 is fixedly connected to a locking connector 502. Each of the six locking connectors 502 is fixedly connected to a constraint sleeve cover 503. Each of the six constraint sleeve covers 503 is fitted onto the corresponding high-voltage wiring terminal 103 clip. Each of the six constraint sleeve covers 503 is fixedly connected to a circumferentially distributed inward-facing clip 504.

[0044] In this embodiment, three connecting guide rods 501 are taken, and locking connectors 502 are fixed to their two ends respectively. The constraint sleeve 503 is fixed to the locking connector 502. During connection, the constraint sleeve 503 is put on the frustum-shaped clip of the high-voltage wiring terminal 103. The elastic contraction of the inward clip 504 achieves a tight fit. At the same time, bolts are used to fix the locking connector 502 and the high-voltage wiring terminal 103 to ensure reliable connection. This avoids the problem that high-voltage wiring rods are usually directly fixed by bolts, which have poor self-locking properties and are easily loosened by environmental and equipment vibration, affecting the normal operation of the circuit.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dry-type transformer with connection port protection, comprising a transformer section (1), characterized in that: The transformer section (1) is provided with three sets of low-voltage stabilizing sections (2) on its exterior. Each of the three sets of low-voltage stabilizing sections (2) includes two low-voltage connecting pieces (201). A fixing piece (204) is provided on the outside of each of the two low-voltage connecting pieces (201). Each of the three sets of low-voltage stabilizing sections (2) is provided with an oil storage section (3). Each of the three sets of oil storage sections (3) includes two oil storage blocks (301). A sealing cover plate (303) is fixedly connected to the top of each of the two oil storage blocks (301). Each of the two sealing covers (303) has an opening. Two docking slots (304) are provided, and connecting screws (305) are rotatably connected inside the two sealing covers (303). The oil storage part (3) is provided with a docking power supply part (4) inside. The docking power supply part (4) includes two power supply blocks (401). Two internal adjustment grooves (403) are opened on the two power supply blocks (401). Locking plugs (404) are threaded inside the four internal adjustment grooves (403). A high-voltage wiring part (5) is provided on the outside of the transformer part (1).

2. A dry-type transformer with connection port protection according to claim 1, characterized in that: The transformer section (1) includes a fixed base frame (101), and three sets of winding bodies (102) are fixedly connected to the top of the fixed base frame (101). Each of the three sets of winding bodies (102) is provided with a high voltage winding and a low voltage winding. Each of the three sets of winding bodies (102) is fixedly connected with a high voltage terminal (103) on its outer wall. The high voltage terminal (103) is provided with a frustum-shaped clamp at its end position.

3. A dry-type transformer with connection port protection according to claim 2, characterized in that: Two top mounting plates (104) are fixedly connected to the top of the three sets of winding bodies (102). The two top mounting plates (104) are respectively set on the high voltage side and the low voltage side of the three sets of winding bodies (102). Three high voltage terminals (105) are fixedly connected to the top mounting plate (104) on the high voltage side. The three high voltage terminals (105) are electrically connected to the high voltage winding of the corresponding winding body (102).

4. A dry-type transformer with connection port protection according to claim 3, characterized in that: Both low-voltage terminals (201) are electrically connected to the low-voltage windings in the corresponding winding bodies (102). Both low-voltage terminals (201) are provided with an insertion end. Both low-voltage terminals (201) are provided with a stable through hole (202) in the middle position. Both low-voltage terminals (201) are provided with a mating insertion hole (203) in the insertion end. The fixing piece (204) is fixed to the corresponding low-voltage side top plate (104).

5. A dry-type transformer with connection port protection according to claim 4, characterized in that: A locking bolt (205) is fixedly connected to the fixing plate (204). The locking bolt (205) is inserted into the two corresponding stable through holes (202). The locking bolt (205) is configured as a threaded rod structure. Two spacer blocks (206) are threadedly connected to the locking bolt (205). The two spacer blocks (206) are both located below the inner end of the corresponding low-voltage terminal block (201). Buffer springs (207) are fixedly connected to the outer walls of the two spacer blocks (206). Buffer pads (208) are fixedly connected to the top of the two buffer springs (207). Circular insertion holes are opened on the two buffer pads (208).

6. A dry-type transformer with connection port protection according to claim 5, characterized in that: Both oil storage blocks (301) are set on the top of the corresponding buffer pads (208). The bottom of both oil storage blocks (301) is provided with inserts for insertion into the corresponding buffer pads (208) insertion holes. Both oil storage blocks (301) have oil grooves (302) inside. Both sealing covers (303) have shaft holes. The corresponding low-voltage connectors (201) are fixedly inserted into the docking slots (304) on the same side of both sealing covers (303).

7. A dry-type transformer with connection port protection according to claim 4, characterized in that: Both of the power-conducting blocks (401) are fixedly connected to the bottom of the corresponding sealing cover plate (303). Both of the power-conducting blocks (401) have two power-conducting grooves (402). The corresponding low-voltage connector (201) is fixedly inserted into the power-conducting grooves (402) on the same side of both power-conducting blocks (401). The four internal adjustment grooves (403) are all set as threaded grooves. The four locking plugs (404) are all inserted into the corresponding mating holes (203). The four locking plugs (404) are provided with hexagonal prism grooves.

8. A dry-type transformer with connection port protection according to claim 7, characterized in that: Each of the four power-conducting slots (402) is connected to a docking through hole (405). Each of the four docking through holes (405) has a corresponding locking block (404) inserted inside. Each of the two power-conducting blocks (401) has a connecting locking groove (406). Each of the two connecting locking grooves (406) has a corresponding connecting screw (305) threaded inside. In addition, each of the two power-conducting slots (402) on the same side has an external conductive plate (407) fixedly inserted inside. Each of the two external conductive plates (407) is inserted inside a corresponding docking slot (304). Each of the two external conductive plates (407) has a fixing hole (408). Each of the two fixing holes (408) has a corresponding locking block (404) inserted inside.

9. A dry-type transformer with connection port protection according to claim 2, characterized in that: The high-voltage wiring section (5) includes three connecting rods (501), and each end of the three connecting rods (501) is fixedly connected to a locking connector (502). Each of the six locking connectors (502) is fixedly connected to a constraint sleeve (503). Each of the six constraint sleeves (503) is fitted onto the corresponding high-voltage wiring end (103) clip. Each of the six constraint sleeves (503) is fixedly connected to a circumferentially distributed inward-facing clip (504).

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