CN216871708U - An oil-immersed voltage transformer - Google Patents

Abstract

The utility model disclosed by the utility model belongs to the technical field of voltage transformers, in particular to an oil-immersed voltage transformer, comprising a casing and a second shock absorbing structure. A sealing layer is arranged between the shell covers, the inner walls of both ends of the bottom of the shell are fixedly installed with grounding rods, both ends of the inner wall of the shell cover are fixedly installed with terminal rods, two sets of coils are arranged in the shell, and The two sets of coils are the primary coil and the secondary coil respectively, the top end of the grounding rod is connected to the inner wall of the bottom end of the core rod in the coil through the first shock absorbing structure, and the bottom end of the connecting rod is connected through the first shock absorbing structure On the inner wall of the top end of the core rod in the coil, the first shock absorbing structure includes a shock absorbing component. The first shock absorbing structure in the present invention not only improves the shock absorbing effect, but also reduces the shaking of the coil, thereby avoiding affect the coil.

Description

An oil-immersed voltage transformer

technical field

The utility model relates to the technical field of voltage transformers, in particular to an oil-immersed voltage transformer.

Background technique

Similar to a transformer, a voltage transformer is an instrument used to transform the voltage on the line. However, the purpose of the transformer to transform voltage is to transmit electric energy, so the capacity is very large, and it is generally calculated in kVA or MVA; and the purpose of the voltage transformer to transform the voltage is mainly used for measuring instruments and relays. The protection device is used to supply power for the voltage, power and electrical energy of the coil line, or to protect the valuable equipment, motors and transformers in the line when the line fails. Therefore, the capacity of the voltage transformer is very small, generally only a few volt-ampere, Dozens of volt-amperes, and the maximum does not exceed one thousand volt-amperes.

Voltage transformers are divided into dry type, pouring type and oil-immersed type, etc. At present, oil-immersed voltage transformers always vibrate due to impact and collision during transportation, installation and use, which will easily cause the coil inside the voltage transformer. Deformation or damage occurs, although there are devices on the market for shock absorption of the coil, but the device not only has poor shock absorption effect, but also cannot reduce the shaking of the coil, which will affect the use of the coil.

To this end, we propose an oil-immersed voltage transformer.

Utility model content

In view of the above-mentioned and/or existing problems in an oil-immersed voltage transformer, the present utility model is proposed.

Therefore, the purpose of the present invention is to provide an oil-immersed voltage transformer, which can solve the above-mentioned existing problems.

In order to solve the above-mentioned technical problems, according to one aspect of the present utility model, the utility model provides the following technical solutions:

An oil-immersed voltage transformer includes a casing and a second shock absorbing structure, the top of the casing is fixedly mounted with a casing cover by screws, and a sealing layer is arranged between the casing and the casing cover, and the casing Ground rods are fixedly installed on the inner walls at both ends of the bottom of the casing cover, and terminal rods are fixedly installed at both ends of the inner wall of the shell cover. The top end of the grounding rod is connected to the inner wall of the bottom end of the core rod in the coil through the first shock absorbing structure, and the bottom end of the connecting rod is connected to the inner wall of the top end of the core rod in the coil through the first shock absorbing structure;

The first shock absorbing structure includes a shock absorbing assembly, the shock absorbing assembly is connected to the inner walls of both ends of the core rod in the coil, and the shock absorbing assembly is provided with a limiting assembly.

As a preferred solution of the oil-immersed voltage transformer of the present invention, an oil drain hole is formed on the inner wall of the bottom end of the housing, and an oil drain pipe is fixedly installed on the inner wall of the oil drain hole, and There is a valve on the oil discharge pipe.

As a preferred solution of the oil-immersed voltage transformer of the present invention, wherein: the inner wall of the middle end of the shell cover is provided with an oil inlet hole, and the inner wall of the oil inlet hole is threadedly connected with a rubber plug, And a sealing layer is arranged between the oil inlet hole and the rubber plug.

As a preferred solution of the oil-immersed voltage transformer according to the present invention, wherein: both ends of the top of the shell cover are fixedly installed with connection blocks, and the inner wall of the connection block is fixedly installed with connecting rods, and the An insulating sleeve is screwed on the connecting block, a sealing layer is arranged between the insulating sleeve and the connecting block, and a connecting rod is arranged on the inner side of the insulating sleeve.

As a preferred solution of the oil-immersed voltage transformer according to the present utility model, wherein: the top inner wall of the insulating sleeve is threadedly connected with a threaded cover, and a sealing layer is provided between the threaded cover and the insulating sleeve, and the insulating sleeve is provided with a sealing layer. The inner wall of the threaded cover is fixedly mounted with a connecting rod, and the connecting rod extends to the top of the threaded cover, and the top end of the connecting rod is provided with a connecting terminal.

As a preferred solution of the oil-immersed voltage transformer of the present invention, wherein: the shock absorber assembly includes a sliding groove and four sets of springs, and the inner walls of both ends of the core rod in the coil are provided with sliding grooves a baffle plate is fixedly installed on the inner wall of one end of the sliding slot, and the inner wall of the sliding slot is slidably connected to the slider;

The top of the grounding rod is fixedly installed with the bottom slider through the bottom baffle, and the grounding rod is slidably connected to the inner wall of the bottom baffle, the grounding rod is slidably connected to the bottom spring, and the two ends of the bottom spring are respectively connected with the bottom baffle. Fixed connection with the bottom slider;

The bottom end of the terminal rod is fixedly installed with the top slider through the top baffle, and the terminal rod is slidably connected to the inner wall of the top baffle, the terminal rod is slidably connected to the top spring, and the two ends of the top spring are respectively connected with the top block. The plate and the top slider are fixedly connected;

The limit assembly includes a limit block and a limit groove, the inner wall of the sliding groove is evenly provided with a number of limit grooves, the slider is evenly fixed and installed with a number of limit blocks, and the limit blocks are clamped in the limit grooves On the inner wall of the stopper, the material of the limit block is set to be rubber.

As a preferred solution of the oil-immersed voltage transformer of the present invention, wherein: the second shock absorption structure includes a first support rod, a first shock absorption spring, a second support rod and a second damper A shock spring, the first support rod is fixedly installed on the inner wall of the top end of the housing, and the inner walls of both ends of the first support rod are fixedly installed with a terminal rod, and one end of the terminal rod is slidably connected to the first shock spring, the The top of the first shock-absorbing spring is fixedly installed with a first support rod, and the bottom of the first shock-absorbing spring is fixedly installed with a top baffle.

As a preferred solution of the oil-immersed voltage transformer of the present invention, wherein: the second support rod is fixedly installed on the inner wall of the bottom end of the casing, and the inner walls of both ends of the second support rod are A grounding rod is fixedly installed, one end of the grounding rod is slidably connected to a second damping spring, the top of the second damping spring is fixedly installed with a bottom baffle plate, and the bottom of the second damping spring is fixedly installed with a second support rod.

Compared with the existing technology:

1. The first shock absorption structure will not only improve the shock absorption effect, but also reduce the shaking of the coil, so as to avoid affecting the coil;

2. The second shock absorbing structure has the effect of improving the shock absorbing effect.

Description of drawings

Fig. 1 is the front view schematic diagram of the structure of the utility model;

Fig. 2 is the enlarged schematic diagram of the structure at place A in Fig. 1 of the utility model;

Fig. 3 is the enlarged schematic diagram of the structure at place B in Fig. 1 of the utility model;

Fig. 4 is an enlarged schematic view of the structure at C in Fig. 1 of the utility model;

FIG. 5 is a schematic view of the structure of the sliding groove of the present invention.

In the figure: shell 2, ground rod 21, oil drain hole 22, oil drain pipe 23, valve 24, shell cover 3, oil inlet hole 31, rubber plug 32, connecting block 33, insulating sleeve 34, threaded cover 35, terminal rod 36. Terminal 37, coil 4, sliding slot 51, baffle 52, slider 53, spring 54, limit block 61, limit slot 62, first support rod 71, first shock spring 72, second support Rod 81 , second damping spring 82 .

Detailed ways

In order to make the objectives, technical solutions and advantages of the present utility model clearer, the embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings.

The utility model provides an oil-immersed voltage transformer, please refer to FIG. 1 to FIG. 5 , including a casing 2 and a second shock absorbing structure, the top of the casing 2 is fixedly installed with a casing cover 3 by screws, and the casing 2 is connected to the A sealing layer is provided between the shell covers 3, the inner walls of both ends of the bottom of the shell 2 are fixedly installed with grounding rods 21, both ends of the inner wall of the shell cover 3 are fixedly installed with terminal rods 36, and two sets of coils 4 are arranged in the shell 2, And the two sets of coils 4 are the primary coil and the secondary coil respectively, the top end of the grounding rod 21 is connected to the inner wall of the bottom end of the core rod in the coil 4 through the first shock absorbing structure, and the bottom end of the connecting rod 36 passes through the first shock absorbing structure. Connected to the inner wall of the top end of the core rod in the coil 4, the first shock absorbing structure includes a shock absorbing assembly, the shock absorbing assembly is connected to the inner walls of both ends of the core rod in the coil 4, and the shock absorbing assembly is provided with a limit assembly.

The inner wall of the bottom end of the casing 2 is provided with an oil discharge hole 22, the inner wall of the oil discharge hole 22 is fixedly installed with an oil discharge pipe 23, and the oil discharge pipe 23 is provided with a valve 24, and the inner wall of the middle end of the shell cover 3 is provided with an oil inlet hole 31, A rubber plug 32 is threadedly connected to the inner wall of the oil inlet hole 31 , and a sealing layer is provided between the oil inlet hole 31 and the rubber plug 32 , the top ends of the shell cover 3 are fixedly installed with a connecting block 33 , and the inner wall of the connecting block 33 is fixedly installed The connecting rod 36, an insulating sleeve 34 is threadedly connected to the connecting block 33, and a sealing layer is provided between the insulating sleeve 34 and the connecting block 33, the inner side of the insulating sleeve 34 is provided with a connecting rod 36, and the top inner wall of the insulating sleeve 34 is threadedly connected with the thread The cover 35 is provided with a sealing layer between the screw cover 35 and the insulating sleeve 34. The inner wall of the screw cover 35 is fixedly installed with a terminal rod 36, and the terminal rod 36 extends to the top of the screw cover 35. The top of the terminal rod 36 is provided with a terminal. 37.

The damping assembly includes a sliding groove 51 and four sets of springs 54. The inner walls of both ends of the core rod in the coil 4 are provided with sliding grooves 51. One end of the inner wall of the sliding groove 51 is fixedly installed with a baffle 52. And the phenomenon that the connecting rod 36 is detached from the sliding groove 51, so as to realize the position limit of the coil 4, the inner wall of the sliding groove 51 is slidably connected to the sliding block 53, and the top of the grounding rod 21 is fixedly installed through the bottom baffle 52. The bottom sliding block Block 53, and the grounding rod 21 is slidably connected to the inner wall of the bottom baffle 52, the grounding rod 21 is slidably connected to the bottom spring 54, and the two ends of the bottom spring 54 are fixedly connected to the bottom baffle 52 and the bottom slider 53 respectively. The bottom end of the rod 36 is fixedly installed with the top slider 53 through the top baffle 52, and the terminal rod 36 is slidably connected to the inner wall of the top baffle 52, and the terminal rod 36 is slidably connected to the top spring 54, and the two ends of the top spring 54 are respectively It is fixedly connected with the top baffle 52 and the top slider 53. The limit component includes a limit block 61 and a limit slot 62. The inner wall of the sliding slot 51 is evenly provided with a number of limit slots 62, and the slider 53 is evenly fixed to install a number of limit slots. The limit block 61 is clamped on the inner wall of the limit groove 62, and the material of the limit block 61 is set to be rubber.

The second shock absorbing structure includes a first support rod 71, a first shock absorbing spring 72, a second support rod 81 and a second shock absorbing spring 82. The first support rod 71 is fixedly installed on the inner wall of the top end of the housing 2, and the first support rod 71 is The inner walls of both ends of a support rod 71 are fixedly mounted with the terminal rod 36, one end of the terminal rod 36 is slidably connected to the first shock-absorbing spring 72, and the top of the first shock-absorbing spring 72 is fixedly installed with the first support rod 71, and the first shock-absorbing spring The bottom of 72 is fixedly installed with the top baffle 52, the second support rod 81 is fixedly installed on the inner wall of the bottom end of the housing 2, and the inner walls of both ends of the second support rod 81 are fixedly installed with the ground rod 21, and one end of the ground rod 21 slides The second damping spring 82 is connected, the top of the second damping spring 82 is fixedly mounted with the bottom baffle 52 , and the bottom of the second damping spring 82 is fixedly mounted with the second support rod 81 .

Working principle: When a vibration occurs, the spring 54 and the second shock-absorbing spring 82 will expand and contract. After the expansion, the spring 54 and the second shock-absorbing spring 82 will generate elasticity, so that the spring 54 and the second shock-absorbing spring 82 will pass through the spring 54 and the second shock-absorbing spring 82 The elasticity of the spring counteracts the force of the vibration, so as to dampen the coil 4. When the spring 54 and the second damping spring 82 expand and contract, the slider 53 will move up and down in the sliding groove 51. When the slider 53 When moving up and down, the limit block 61 will pass through multiple sets of limit grooves 62, thereby increasing the friction force between the friction force limit block 61 and the limit groove 62, so the limit block 61 will pass through the limit block 61 and the limit groove. The frictional force between the 62 counteracts the vibration force, thereby reducing the shaking of the coil 4 .

Although the present invention has been described above with reference to the embodiments, various modifications may be made and equivalents may be substituted for parts thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features in the disclosed embodiments of the present invention can be combined with each other in any way, and the description of these combinations is not exhaustive in this specification. For the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims (8)

1. The utility model provides an oil-immersed voltage transformer, includes casing (2) and second shock-absorbing structure, screw fixed mounting cap (3) are passed through at the top of casing (2), and are equipped with the sealing layer between casing (2) and cap (3), the equal fixed mounting earthing rod (21) of bottom both ends inner wall of casing (2), the equal fixed mounting binding post (36) in inner wall both ends of cap (3), be equipped with two sets of coils (4) in casing (2), and two sets of coils (4) are primary coil and secondary coil, its characterized in that respectively: the top end of the grounding rod (21) is connected to the inner wall of the bottom end of the core rod in the coil (4) through a first damping structure, and the bottom end of the wiring rod (36) is connected to the inner wall of the top end of the core rod in the coil (4) through the first damping structure;

the first damping structure comprises a damping assembly, the damping assembly is connected to the inner walls of the two ends of the core rod in the coil (4), and a limiting assembly is arranged on the damping assembly.

2. The oil-immersed voltage transformer according to claim 1, wherein an oil discharge hole (22) is formed in the inner wall of the bottom end of the shell (2), an oil discharge pipe (23) is fixedly mounted on the inner wall of the oil discharge hole (22), and a valve (24) is arranged on the oil discharge pipe (23).

3. The oil-immersed voltage transformer according to claim 1, wherein an oil inlet hole (31) is formed in the inner wall of the middle end of the shell cover (3), a rubber plug (32) is in threaded connection with the inner wall of the oil inlet hole (31), and a sealing layer is arranged between the oil inlet hole (31) and the rubber plug (32).

4. The oil-immersed voltage transformer according to claim 1, wherein connecting blocks (33) are fixedly mounted at both ends of the top of the shell cover (3), a junction rod (36) is fixedly mounted on the inner wall of each connecting block (33), an insulating sleeve (34) is connected onto each connecting block (33) in a threaded manner, a sealing layer is arranged between each insulating sleeve (34) and each connecting block (33), and the junction rod (36) is arranged on the inner side of each insulating sleeve (34).

5. The oil-immersed voltage transformer according to claim 4, wherein a threaded cover (35) is in threaded connection with the inner wall of the top end of the insulating sleeve (34), a sealing layer is arranged between the threaded cover (35) and the insulating sleeve (34), a wiring rod (36) is fixedly installed on the inner wall of the threaded cover (35), the wiring rod (36) extends above the threaded cover (35), and a wiring terminal (37) is arranged at the top end of the wiring rod (36).

6. The oil-immersed voltage transformer according to claim 1, wherein the damping assembly comprises a sliding groove (51) and four groups of springs (54), the sliding groove (51) is formed in each of the inner walls of two ends of a core rod in the coil (4), a baffle (52) is fixedly mounted on the inner wall of one end of the sliding groove (51), and the inner wall of the sliding groove (51) is slidably connected with a sliding block (53);

the top end of the grounding rod (21) is fixedly provided with a bottom sliding block (53) through a bottom baffle (52), the grounding rod (21) is connected to the inner wall of the bottom baffle (52) in a sliding mode, the grounding rod (21) is connected with a bottom spring (54) in a sliding mode, and two ends of the bottom spring (54) are fixedly connected with the bottom baffle (52) and the bottom sliding block (53) respectively;

the bottom end of the wiring rod (36) is fixedly provided with a top sliding block (53) through a top baffle (52), the wiring rod (36) is connected to the inner wall of the top baffle (52) in a sliding mode, the wiring rod (36) is connected with a top spring (54) in a sliding mode, and two ends of the top spring (54) are fixedly connected with the top baffle (52) and the top sliding block (53) respectively;

the limiting assembly comprises limiting blocks (61) and limiting grooves (62), a plurality of limiting grooves (62) are uniformly formed in the inner wall of the sliding groove (51), a plurality of limiting blocks (61) are uniformly and fixedly mounted on the sliding block (53), the limiting blocks (61) are connected to the inner wall of the limiting grooves (62) in a clamped mode, and rubber is arranged on the limiting blocks (61) through materials.

7. The oil-immersed voltage transformer according to claim 1, wherein the second damping structure comprises a first supporting rod (71), a first damping spring (72), a second supporting rod (81) and a second damping spring (82), the first supporting rod (71) is fixedly installed on the inner wall of the top end of the shell (2), the inner walls of the two ends of the first supporting rod (71) are fixedly installed with a wiring rod (36), one end of the wiring rod (36) is slidably connected with the first damping spring (72), the first supporting rod (71) is fixedly installed at the top of the first damping spring (72), and the top baffle (52) is fixedly installed at the bottom of the first damping spring (72).

8. The oil-immersed voltage transformer according to claim 7, wherein the second support rod (81) is fixedly installed on the inner wall of the bottom end of the shell (2), the inner walls of both ends of the second support rod (81) are fixedly installed with the grounding rod (21), one end of the grounding rod (21) is slidably connected with the second damping spring (82), the top of the second damping spring (82) is fixedly installed with the bottom baffle (52), and the bottom of the second damping spring (82) is fixedly installed with the second support rod (81).

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