Voltage transformer

Abstract

The invention relates to a voltage transformer, and relates to the technical field of transformers, the voltage transformer comprises a transformer body, a base plate is arranged below the transformer body, a plurality of supporting rods are fixedly arranged on the base plate, and the ends, away from the base plate, of the supporting rods are fixedly connected with the bottom side of the transformer body; in the application, the voltage transformer can isolate high voltage from electrical workers, so that the safety of the workers is ensured. Meanwhile, a measuring loop can be isolated from a measured loop, so that test equipment and an electrical system are protected from being damaged; the voltage transformer is strictly tested and subjected to quality control in the design and manufacturing processes, so that the high reliability of the voltage transformer is ensured; therefore, the device can stably operate in an electric power system, and the fault time and the downtime are reduced; the voltage transformer can be suitable for electrical equipment with different voltage grades, and can meet the measurement requirements of different occasions, so that the voltage transformer can play an important role in various power systems.

Description

Technical Field

[0001] The present application relates to the technical field of transformers, and in particular to a voltage transformer. Background Art

[0002] Voltage transformers can be divided into electromagnetic voltage transformers, capacitive voltage transformers and electronic voltage transformers according to their working principles. Among them, electromagnetic voltage transformers use the principle of electromagnetic induction to convert high voltage into low voltage according to proportional requirements. They are used for voltage monitoring and power metering. They are suitable for working environments ranging from -5 degrees Celsius to 45 degrees Celsius.

[0003] From a technical perspective, a voltage transformer primarily consists of a mutual inductance component encased in an insulating shell. Within the mutual inductance component, an iron core, primary winding, secondary winding, and insulation material are meticulously arranged. The iron core, the heart of the transformer, carries the primary and secondary windings, which are meticulously wound and insulated from each other. When the primary winding receives voltage U1, a magnetic flux φ is generated in the iron core. Based on the principle of electromagnetic induction, a secondary voltage U2 is induced in the secondary winding. By flexibly adjusting the number of turns in the primary or secondary winding, different primary-to-secondary voltage ratios can be customized to meet diverse voltage transformer requirements.

[0004] However, when voltage transformers are deployed outdoors, despite their inherent waterproofing and the fact that they are often bolted directly to the ground, waterlogging poses a significant risk during rainy seasons. Prolonged exposure to water can not only gradually erode the transformer's protective coating but also potentially penetrate its internal structure, causing insulation degradation and even the risk of internal short circuits. This poses a potential threat to the stable operation of the power system, leaving room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide a voltage transformer to solve the problem that when the above-mentioned voltage transformer is used outdoors in rainy seasons, ground water may penetrate into the transformer.

[0006] The voltage transformer provided in this application adopts the following technical solution: A voltage transformer comprises a transformer body, wherein a base plate is provided below the transformer body, a plurality of support rods are fixed on the base plate, and ends of the support rods away from the base plate are fixedly connected to the bottom side of the transformer body.

[0007] By adopting the above technical solution, due to the coordinated arrangement of the substrate and the support rod, a gap is created between the bottom side of the transformer body and the upper side of the substrate, thereby raising the height of the transformer body, reducing the possibility of ground water eroding the lower part of the transformer body in rainy weather, and improving the safety protection performance of the transformer body when used outdoors.

[0008] Optionally, a plurality of universal wheels with a braking function are fixed on the bottom side of the base plate, and a traction handle is hinged on the side of the base plate facing the transformer body, and the traction handle can be rotated, adjusted and fixed.

[0009] By adopting the above technical solution, when the voltage transformer needs to be moved a short distance, due to the coordinated arrangement of the universal wheel and the traction handle, the base plate can slide quickly on the ground through the universal wheel, and the base plate can be quickly pulled by the traction handle, thereby facilitating the short-distance movement of the voltage transformer.

[0010] Optionally, a hinge seat is fixed on the base plate, and the traction handle is rotatably connected to the hinge seat through a hinge shaft. A plurality of locking screw holes are provided on the hinge seat, and a locking through hole that can coincide with the locking screw hole is provided on the traction handle. A locking bolt is provided above the base plate and passes through the locking screw hole and is screwed into the locking through hole.

[0011] By adopting the above technical solution, when adjusting and fixing the rotation angle of the traction handle, the locking screw hole on the traction handle is adjusted to a state where it coincides with the locking screw hole at the corresponding position, and then the locking bolt is used to fix it.

[0012] Optionally, two positioning rods are symmetrically arranged on the base plate in the vertical direction, and a positioning through-hole is opened on the base plate for the positioning rods to pass through and slide; an adjusting member is provided on the base plate to control the reciprocating sliding of the positioning rod, and the lower end of the positioning rod passing through the positioning through-hole can slide back and forth in the direction close to the ground.

[0013] By adopting the above technical solution, when the traction handle is rotated, the positioning rod can be slid up and down by controlling the adjustment member, thereby causing the lower end of the positioning rod passing through the positioning through hole to slide back and forth in the direction close to the ground; when the voltage transformer is installed and fixed, the lower end of the positioning rod is abutted against the ground, thereby improving the installation stability of the voltage transformer; when the voltage transformer needs to be moved, the positioning rod is moved upward so that there is a gap between the lower end of the positioning rod and the ground, thereby reducing the impact on the movement of the voltage transformer.

[0014] Optionally, a retaining ring is fixed on the outer periphery of the positioning rod, and a positioning groove for the retaining ring to be placed in and slide up and down is opened on the upper opening edge of the positioning through hole of the base plate, and a compression spring is provided in the positioning groove, and the two ends of the compression spring are fixedly connected to the bottom side of the positioning groove and the retaining ring respectively; a guide inclined surface is provided on the upper end edge of the positioning rod, and the adjusting part includes an adjusting rod slidably provided on the upper side of the base plate and a connecting rod hinged to one end of the adjusting rod, and the adjusting rod can slide along the guide inclined surface to a state of abutting against the upper end surface of the positioning rod, and the other end of the connecting rod is hinged to the outer peripheral surface of the traction handle.

[0015] By adopting the above technical solution, when the traction handle is rotated to a certain state, the adjusting rod is driven by the connecting rod to slide along the guide inclined surface to a state of abutting against the upper end face of the positioning rod. At this time, the compression spring is compressed, and the lower end of the positioning rod abuts against the ground. This state facilitates enhancing the installation stability of the voltage transformer; when the adjusting rod and the upper end of the positioning rod are misaligned, the compression spring squeezes the retaining ring until the upper side surface of the retaining ring is flush with the upper side surface of the substrate, and at the same time moves the positioning rod upward, and finally there is a gap between the lower end of the positioning rod and the ground. This state facilitates moving the voltage transformer over a short distance.

[0016] Optionally, a traction ring is hinged on the transformer body, and the traction ring can be rotated, adjusted and fixed relative to the transformer body.

[0017] By adopting the above technical solution, when the voltage transformer is installed, due to the setting of the traction spring on the transformer body, the lifting equipment can quickly lift the transformer body through the traction pull ring, thereby improving the overall assembly efficiency of the voltage transformer.

[0018] Optionally, the end of the traction ring away from the transformer body can be rotated to a state of abutting against the upper side surface of the substrate and fixed.

[0019] By adopting the above technical solution, after the hoisting is completed, the traction ring can be rotated to abut against the upper side of the substrate and fixed, thereby improving the stability of the mutual inductor body and the substrate surface.

[0020] Optionally, a accommodating groove is provided on the end of the traction handle away from the base plate, and a protective curtain is provided inside the accommodating groove. One side of the protective curtain is fixedly connected to the inner wall of the accommodating groove, and the other side of the protective curtain is detachably connected to the end of the traction pull ring away from the transformer.

[0021] By adopting the above technical solution, when the voltage transformer is used outdoors, the protective curtain can be taken out of the accommodating groove, and then the traction handle is adjusted to a vertical state, and finally one side of the protective curtain is detachably connected to the traction pull ring, thereby shielding and protecting the upper side of the transformer body, reducing the exposure of the voltage transformer to sunlight and the impact of rain on the voltage transformer, and improving the safety protection performance of the voltage transformer.

[0022] Optionally, a hook is fixedly provided on the side edge of the protective curtain away from the traction handle, and a slot for the hook to be engaged is provided on the traction pull ring.

[0023] By adopting the above technical solution, when the side of the protective curtain away from the traction handle is detachably connected to the traction pull ring, the hook on the protective curtain can be inserted into the slot on the traction pull ring, thereby improving the corresponding assembly efficiency.

[0024] Optionally, a blocking plate for blocking the opening of the accommodating groove is hingedly connected to the traction handle, and an accommodating groove for the blocking plate to be rotated and inserted into is provided on the opening edge of the accommodating groove.

[0025] By adopting the above technical solution, when the protective curtain is not needed for protection, the protective curtain can be folded and stored inside the accommodating groove, and then the opening of the accommodating groove can be blocked with a blocking plate, so that the protective curtain can be better stored.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. Due to the coordinated arrangement of the base plate and the support rod, there is a gap between the bottom side of the transformer body and the upper side of the base plate, thereby raising the height of the transformer body, reducing the possibility of ground water eroding the lower part of the transformer body in rainy weather, and improving the safety protection performance of the transformer body when used outdoors.

[0027] 2. When the voltage transformer is installed and fixed, the lower end of the positioning rod is in contact with the ground to improve the installation stability of the voltage transformer; when the voltage transformer needs to be moved, the positioning rod is moved upward so that there is a gap between the lower end of the positioning rod and the ground to reduce the impact on the movement of the voltage transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 This is a schematic structural diagram of a transformer body according to an embodiment of the present application; Figure 2 This is a schematic diagram of the structure of the installation and coordination of the substrate and the transformer body according to an embodiment of the present application; Figure 3 This is a partial structural diagram of the installation and coordination of the traction handle in an embodiment of the present application; Figure 4 It is a partial cross-sectional structural diagram of the embodiment of the present application embodying the installation and coordination of the traction handle; Figure 5 This is a partial cross-sectional structural diagram of the embodiment of the present application embodying the installation and coordination of the adjusting member; Figure 6 yes Figure 5 A magnified schematic diagram of part A; Figure 7 This is a schematic diagram of the structure of an embodiment of the present application when the pull ring abuts against the upper surface of the substrate; Figure 8This is a schematic diagram of the structure of the protective curtain installation embodiment of the present application; Figure 9 yes Figure 8 An enlarged schematic diagram of part B; Figure 10 It is a schematic diagram of the partial cross-sectional structure of the embodiment of the present application embodying the installation and coordination of the protective curtain.

[0030] In the figure, 1. transformer body; 2. base plate; 21. support rod; 22. universal wheel; 23. hinged seat; 231. locking screw hole; 24. locking bolt; 25. positioning through hole; 251. positioning sink; 3. traction handle; 31. locking through hole; 32. accommodating groove; 321. accommodating sink; 33. blocking plate; 4. positioning rod; 41. retaining ring; 42. guiding slope; 43. compression spring; 5. adjusting member; 51. adjusting rod; 52. connecting rod; 6. traction pull ring; 61. slot; 7. protective curtain; 71. hook. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0032] Example: Reference Figure 1 A voltage transformer includes a transformer body 1, wherein the transformer body 1 includes an insulating shell, a transformer assembly located in the insulating shell, and an insulating filler, the transformer assembly generally includes an iron core, a primary coil wound on the iron core, and a secondary coil wound on the iron core, and the insulating filler is generally epoxy resin; During the assembly of the transformer body 1, the following steps are adopted: first, the transformer assembly is installed inside the insulating shell and the corresponding wiring is completed; second, the insulating filler is injected into the insulating shell to cover the transformer assembly inside the insulating shell.

[0033] During the operation of the voltage transformer, when voltage is applied to the primary winding, the iron core generates magnetic flux, and according to the law of electromagnetic induction, a secondary voltage is generated in the secondary winding; by changing the number of turns of the primary or secondary winding, different primary voltage and secondary voltage ratios can be generated.

[0034] Reference Figure 2 and Figure 3 A base plate 2 is provided below the transformer body 1, and four support rods 21 are fixed on the base plate 2 in the vertical direction. The ends of the support rods 21 away from the base plate 2 are fixedly connected to the four corners of the bottom side of the transformer body 1, so as to support the transformer and thereby raise the installation height of the transformer.

[0035] Reference Figure 3 and Figure 4, four universal wheels 22 with brake functions are fixed on the bottom side of the base plate 2, and a traction handle 3 is hinged on the side edge of the base plate 2 facing the transformer body 1, wherein the traction handle 3 can be rotated to a certain angle relative to the base plate 2 and then fixed to this state; Two hinged seats 23 are fixed on the base plate 2, and the traction handle 3 is rotatably connected to the hinged seat 23 through a hinge shaft. Three locking screw holes 231 are provided on the hinged seat 23 (corresponding to the horizontal, 45-degree upward and vertical states respectively), and a locking through hole 31 that can coincide with the locking screw hole 231 is provided on the traction handle 3. A locking bolt 24 is provided above the base plate 2 and passes through the locking screw hole 231 and is screwed into the locking through hole 31. The locking bolt 24 is a butterfly bolt.

[0036] Reference Figure 3 and Figure 5 Two positioning rods 4 are symmetrically arranged on the base plate 2 in the vertical direction, and a positioning through-hole 25 is opened on the base plate 2 for the positioning rod 4 to pass through and slide; an adjusting member 5 is provided on the base plate 2 to control the reciprocating sliding of the positioning rod 4. When the traction handle 3 is rotated, the positioning rod 4 can be slid up and down by controlling the adjusting member 5, thereby making the lower end of the positioning rod 4 passing through the positioning through-hole 25 slide back and forth in the direction close to the ground.

[0037] Reference Figure 5 and Figure 6 A retaining ring 41 is fixed on the outer periphery of the positioning rod 4, and a positioning groove 251 is opened on the upper opening edge of the positioning through hole 25 of the base plate 2 for the retaining ring 41 to be placed in and slide up and down. A compression spring 43 is provided in the positioning groove 251, and the two ends of the compression spring 43 are respectively fixedly connected to the bottom side of the positioning groove 251 and the retaining ring 41; a guide inclined surface 42 is provided on the upper end edge of the positioning rod 4, and the adjusting member 5 includes an adjusting rod 51 slidably arranged on the upper side of the base plate 2, and a connecting rod 52 hinged to one end of the adjusting rod 51. The adjusting rod 51 can slide along the guide inclined surface 42 until it abuts against the upper end surface of the positioning rod 4, and the other end of the connecting rod 52 is hinged to the outer peripheral surface of the traction handle 3; When the traction handle 3 is rotated to a vertical state, the adjusting rod 51 is driven by the connecting rod 52 to slide along the guide inclined surface 42 until it abuts against the upper end surface of the positioning rod 4. At this time, the compression spring 43 is compressed, and the lower end of the positioning rod 4 abuts against the ground. This state facilitates enhancing the installation stability of the voltage transformer. When the traction handle 3 is at an upward angle of 45 degrees and in a horizontal state, the adjustment rod 51 does not abut against the upper end of the positioning rod 4, and the compression spring 43 squeezes the retaining ring 41 until the upper side of the retaining ring 41 is flush with the upper side of the substrate 2, and at the same time moves the positioning rod 4 upward, and finally there is a gap between the lower end of the positioning rod 4 and the ground. This state is convenient for moving the voltage transformer over a short distance.

[0038] Reference Figure 7 and Figure 8, the middle part of the two opposite sides of the transformer body 1 is hinged with a traction pull ring 6, wherein the traction pull ring 6 can be rotated and adjusted relative to the transformer body 1 and fixed. The traction pull ring 6 and the transformer, the traction handle 3 and the base plate 2 are hinged in the same manner, which will not be repeated here; The end of the pulling ring 6 away from the transformer body 1 can be rotated to abut against the upper side of the substrate 2 and fixed, thereby improving the installation stability between the transformer body 1 and the substrate 2.

[0039] Reference Figure 8 A receiving groove 32 is provided on the end of the traction handle 3 away from the base plate 2, and a protective curtain 7 is provided inside the receiving groove 32. One side of the protective curtain 7 is fixedly connected to the inner wall of the receiving groove 32, and the other side of the protective curtain 7 is detachably connected to the end of the traction pull ring 6 away from the transformer; When the voltage transformer is used outdoors, the protective curtain 7 can be taken out of the accommodating groove 32, and then the traction handle 3 is adjusted to a vertical state, and the traction pull ring 6 is rotated away from the traction handle 3 and adjusted to an upward angle of 45 degrees. Finally, one side of the protective curtain 7 is detachably connected to the traction pull ring 6; thereby, the upper side of the transformer body 1 is shielded and protected.

[0040] Reference Figure 8 and Figure 9 Two hooks 71 are fixed on the side edge of the protective curtain 7 away from the traction handle 3, and a slot 61 for the hooks 71 to be engaged is provided on the traction pull ring 6, thereby realizing a detachable connection between one side edge of the protective curtain 7 and the traction pull ring 6.

[0041] Reference Figure 8 and Figure 10 A blocking plate 33 is hingedly connected to the traction handle 3 to block the opening of the accommodating groove 32, wherein a accommodating groove 321 is provided on the opening edge of the accommodating groove 32 for the blocking plate 33 to rotate and engage, and finally the blocking plate 33 can be fixed with screws; with this arrangement, when the protective curtain 7 is not needed for protection, the protective curtain 7 can be folded and stored in the accommodating groove 32, and then the blocking plate 33 can be used to block the opening of the accommodating groove 32.

[0042] The implementation principle of the embodiment of this application is: When installing the voltage transformer, the worker can quickly lift the transformer body 1 through the traction ring 6; when the voltage transformer needs to be moved a short distance to a designated location, the traction handle 3 can be adjusted to an upward angle of 45 degrees. The combination of the traction handle 3 and the universal wheel 22 can achieve rapid movement of the voltage transformer; When the inductance transformer is installed outdoors, first rotate the traction handle 3 to a vertical state, and then drive the adjustment rod 51 to slide along the guide slope 42 to a position where it abuts the upper end surface of the positioning rod 4 through the connecting rod 52, so that the lower end of the positioning rod 4 abuts the ground; After the inductance transformer is installed, when it is necessary to protect the upper part of the transformer body 1, the protective curtain 7 is taken out from the accommodating groove 32, and then the traction pull ring 6 is rotated and adjusted to 45 degrees upward in the direction away from the traction handle 3, and finally the hook 71 on the protective curtain 7 is inserted into the card groove 61 on the traction pull ring 6; when the protective curtain 7 is no longer needed for protection, the protective curtain 7 can be folded and stored inside the accommodating groove 32, and then the opening of the accommodating groove 32 is sealed using the blocking plate 33.

[0043] Unless otherwise defined, the terms or scientific terms used in this application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "A" or "one" and other similar words do not indicate a quantity limit, but rather indicate the existence of at least one. "Include" or "comprising" and other similar words mean that the elements or objects appearing before "include" or "comprising" cover the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0044] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A voltage transformer, comprising a transformer body (1), characterized in that: A base plate (2) is provided below the transformer body (1), and a plurality of support rods (21) are fixedly provided on the base plate (2). The ends of the support rods (21) away from the base plate (2) are fixedly connected to the bottom side of the transformer body (1).

2. A voltage transformer according to claim 1, characterized in that: A plurality of universal wheels (22) with a braking function are fixed on the bottom side of the base plate (2), and a traction handle (3) is hingedly connected to the side of the base plate (2) facing the transformer body (1), and the traction handle (3) can be rotated, adjusted, and fixed.

3. A voltage transformer according to claim 2, characterized in that: A hinge seat (23) is fixedly provided on the base plate (2); the traction handle (3) is rotatably connected to the hinge seat (23) via a hinge shaft; a plurality of locking screw holes (231) are provided on the hinge seat (23); a locking through hole (31) that can overlap with the locking screw hole (231) is provided on the traction handle (3); and a locking bolt (24) is provided above the base plate (2) and passes through the locking screw hole (231) and is screwed into the locking through hole (31).

4. A voltage transformer according to claim 2, characterized in that: Two positioning rods (4) are symmetrically arranged on the base plate (2) in a vertical direction, and a positioning through hole (25) is provided on the base plate (2) for the positioning rods (4) to pass through and slide. The base plate (2) is provided with an adjusting member (5) for controlling the reciprocating sliding of the positioning rod (4); the lower end of the positioning rod (4) passing through the positioning through hole (25) can reciprocate in a direction close to the ground.

5. A voltage transformer according to claim 4, characterized in that: A retaining ring (41) is fixedly provided on the outer periphery of the positioning rod (4); a positioning groove (251) is provided on the upper opening edge of the positioning through hole (25) of the base plate (2) for the retaining ring (41) to be placed therein and slide up and down; a compression spring (43) is provided in the positioning groove (251); and two ends of the compression spring (43) are fixedly connected to the bottom side of the positioning groove (251) and the retaining ring (41) respectively; A guiding slope (42) is provided on the upper end edge of the positioning rod (4); the adjusting member (5) comprises an adjusting rod (51) slidably arranged on the upper side of the base plate (2) and a connecting rod (52) hinged to one end of the adjusting rod (51); the adjusting rod (51) can slide along the guiding slope (42) to a state of contact with the upper end surface of the positioning rod (4); the other end of the connecting rod (52) is hinged to the outer peripheral surface of the traction handle (3).

6. A voltage transformer according to claim 3, characterized in that: A traction ring (6) is hingedly connected to the transformer body (1), and the traction ring (6) can be rotated, adjusted, and fixed relative to the transformer body (1).

7. A voltage transformer according to claim 6, characterized in that: The end of the traction ring (6) away from the transformer body (1) can be rotated to a state where it abuts against the upper side surface of the base plate (2) and is fixed.

8. A voltage transformer according to claim 6, characterized in that: An accommodating groove (32) is provided on the end of the traction handle (3) away from the base plate (2), and a protective curtain (7) is provided inside the accommodating groove (32). One side of the protective curtain (7) is fixedly connected to the inner wall of the accommodating groove (32), and the other side of the protective curtain (7) is detachably connected to the end of the traction pull ring (6) away from the mutual inductor.

9. A voltage transformer according to claim 8, characterized in that: A hook (71) is fixedly provided on the side edge of the protective curtain (7) away from the traction handle (3), and a slot (61) for the hook (71) to be inserted is provided on the traction pull ring (6).

10. A voltage transformer according to claim 8, characterized in that: A blocking plate (33) for blocking the opening of the accommodating groove (32) is hingedly connected to the traction handle (3), and an accommodating groove (321) for the blocking plate (33) to be rotated and engaged is provided on the opening edge of the accommodating groove (32).

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