CN220856263U

CN220856263U - Dry-type transformer

Info

Publication number: CN220856263U
Application number: CN202322670453.2U
Authority: CN
Inventors: 戚子轩; 梁威鸿; 黄洁
Original assignee: GUANGDONG KEYUAN ELECTRIC CO LTD
Current assignee: GUANGDONG KEYUAN ELECTRIC CO LTD
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2024-04-26
Anticipated expiration: 2033-09-28

Abstract

The utility model relates to the technical field of transformers, and discloses a dry-type transformer, which comprises: the waterproof connector passes through the side wall of the box body, the waterproof connector comprises an inner end part positioned at the inner side of the box body and an outer end part positioned at the outer side of the box body, the transformer winding comprises a wiring terminal, the wiring terminal is connected with an inner wire, an outer wire led outwards is arranged in the outer end part, the inner wire and the outer wire are electrically connected in the waterproof connector, the first connector cover and the inner end part are screwed to lock the wires together with the waterproof connector, the second connector cover and the outer end part are screwed to lock the wires on the waterproof connector, the locking column is fixed on the side wall of the box body, the pressing sleeve is made of soft materials, the pressing sleeve is sleeved outside the inner end part, and the pressing part and the locking column are screwed to compress the inner end part. The dry-type transformer is tightly pressed on the first connector cover through the lock column, the pressing piece and the pressing sleeve, so that the circuit contact is ensured to be reliable.

Description

Dry-type transformer

Technical Field

The utility model relates to the technical field of transformers, in particular to a dry-type transformer.

Background

The small dry-type transformer, such as servo electronic transformer, usually designs the exposed binding post on the box body, and the upside of the metal conducting strip of binding post is sheltered from with the plastics lid, and this can play certain waterproof effect. However, in some humid environments, the exposed metal conductive sheet presents a greater risk of leakage. For this reason, current small dry transformers are designed with a housing and waterproof wiring connectors. In order to ensure insulativity, the existing waterproof connector is made of plastic, and the waterproof connector made of plastic is easy to lead to unreliable connection between the waterproof connector and a wire when being subjected to external environment vibration under the condition that the heat generated during the working of a transformer or the outdoor temperature is high and is heated for a long time, so that the problem of unstable line contact is caused. As can be seen, there is still room for improvement in current dry transformers.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the background art.

The present utility model provides a dry-type transformer, comprising: the waterproof connector comprises a box body, a transformer winding, a waterproof connector, a first connector cover, a second connector cover, a lock column, a pressing piece and a pressing sleeve, wherein the waterproof connector is fixedly connected with the box body, the waterproof connector penetrates through the side wall of the box body, the waterproof connector comprises an inner end portion positioned at the inner side of the box body and an outer end portion positioned at the outer side of the box body, the transformer winding comprises a wiring terminal, the wiring terminal is connected with an inner wire, the other end of the inner wire stretches into the inner end portion, an outer wire led outwards is arranged in the outer end portion, the inner wire and the outer wire are electrically connected in the waterproof connector, the first connector cover is screwed with the inner end portion to lock the wire with the waterproof connector, the second connector cover is screwed with the outer end portion to lock the wire on the waterproof connector, the lock column is fixed on the side wall of the box body, the pressing sleeve is made of soft material, the pressing sleeve is sleeved outside the inner end portion, and the pressing piece and the lock column are screwed tightly.

The utility model has the beneficial effects that: the transformation winding of the dry-type transformer is communicated with the inner lead and the inner lead through the waterproof connector, so that the dry-type transformer is not easily influenced by environmental humidity; the waterproof connector is located in the box body, besides the wire is locked through the first connector cover in a screwing mode, the pressing sleeve is pressed through the pressing piece and the locking column in a screwing mode, the first connector cover is locked through the pressing sleeve, the first connector cover is not easy to loosen when being vibrated, and on the other hand, the waterproof connector also has a certain heat insulation effect on the first connector cover, the first connector cover is favorable for keeping the wire fixed, and the circuit contact is guaranteed to be reliable.

As some sub-schemes of the above technical scheme, a first screw thread is provided on the outer periphery of the lock cylinder, a second screw thread is provided on the inner side of the pressing piece, and the first screw thread is in threaded connection with the second screw thread.

As some sub-schemes of the above technical scheme, the pressing piece includes a connecting portion and a pressing portion connected together, the second screw thread is disposed on the connecting portion, an outer wall of the pressing portion is tapered, an opening of the pressing portion adjacent to one end of the connecting portion is larger than one end far away from the connecting portion, and the pressing portion presses the pressing sleeve on the first joint cover.

As some sub-schemes of the above technical scheme, a bracket and a conductive strip are arranged on the inner side of the waterproof joint, the bracket is fixedly connected with the waterproof joint, a through hole is formed in the bracket, the conductive strip penetrates through the through hole and is fixed with the bracket, and the inner lead is electrically connected with the outer lead through the conductive strip.

As some sub-aspects of the above technical solution, the number of the conductive strips is three.

As some sub-schemes of the above technical scheme, a separation frame is further arranged on the support, the separation frame is in a Y shape, and three conductive strips are separated by the separation frame.

As some sub-aspects of the above technical solution, the lock cylinder is made of ceramic.

As some sub-schemes of the above technical scheme, the lock cylinder is made of boron nitride ceramics.

As some sub-schemes of the above technical scheme, the material of the pressing sleeve is rubber.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of an embodiment of a dry-type transformer;

FIG. 2 is a schematic diagram of the internal structure of an embodiment of a dry-type transformer;

FIG. 3 is a schematic view of the structure of the water drain connector;

fig. 4 is a front semi-sectional view of an embodiment of a dry transformer.

In the accompanying drawings: 1-a box body;

2-transforming windings;

3-waterproof joint; 31-a bracket; 32-dividing frames; 33-conducting strips;

4-a first connector cover;

5-a second connector cover;

6-locking a column;

7-pressing piece; 71-connecting part; 72-compacting part;

8-pressing the sleeve;

91-inner leads; 92-outer conductor.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the meaning of a number is not quantitative, and the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated. Appear throughout and/or represent three parallel schemes, e.g., a and/or B represent a scheme that is met by a, a scheme that is met by B, or a scheme that is met by a and B simultaneously.

In the description of the utility model, there are phrases containing a plurality of parallel features, where the phrase defines a feature that is closest, for example: b, C provided on A, E connected with D, which means that B is provided on A, E connected with D, and C is not limited; but for the words representing the relationship between features, such as "spaced arrangement", "annular arrangement", etc., do not belong to this category. The phrase preceded by a "homonym" indicates that all features in the phrase are defined, e.g., B, C, D, all disposed on a, and B, C and D are both disposed on a. The sentence of the subject is omitted, and the omitted subject is the subject of the previous sentence, namely, B is arranged on A and comprises C, B is arranged on A, and A comprises C.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Embodiments of the present utility model are described below with reference to fig. 1 to 4.

The present embodiments relate to a dry-type transformer for changing the output voltage of a circuit to adapt to different power requirements.

The dry-type transformer includes: the waterproof connector comprises a box body 1, a transformer winding 2, a waterproof connector 3, a first connector cover 4, a second connector cover 5, a lock column 6, a pressing piece 7 and a pressing sleeve 8, wherein the waterproof connector 3 is fixedly connected with the box body 1, the waterproof connector 3 penetrates through the side wall of the box body 1, the waterproof connector 3 comprises an inner end part positioned at the inner side of the box body 1 and an outer end part positioned at the outer side of the box body 1, the transformer winding 2 comprises a wiring terminal, the wiring terminal is connected with an inner lead 91, the other end of the inner lead 91 stretches into the inner end part, an outer lead 92 led outwards is arranged in the outer end part, the inner lead 91 and the outer lead 92 are electrically connected in the waterproof connector 3, the first connector cover 4 is screwed with the inner end part to lock the lead with the waterproof connector 3, the second connector cover 5 is screwed with the outer end part to lock the lead on the waterproof connector 3, the lock column 6 is fixed on the side wall of the box body 1, the pressing sleeve 8 is made of soft material, and the pressing sleeve 8 is screwed with the inner lead 7 and the pressing sleeve 8.

The transformation winding 2 of the dry-type transformer is communicated with the inner lead 91 through the waterproof connector 3, so that the dry-type transformer is not easily influenced by environmental humidity; the waterproof connector 3 is located in the inner end of the box body 1, besides the wire is locked through the first connector cover 4 in a screwing mode, the pressing sleeve 8 is pressed through the pressing piece 7 and the lock column 6 in a screwing mode, the first connector cover 4 is locked through the pressing sleeve 8, the first connector cover 4 is not easy to loosen when vibrated, and on the other hand, the waterproof connector also has a certain heat insulation effect on the first connector cover 4, the first connector cover 4 is facilitated to keep the wire fixed, and the circuit contact is guaranteed to be reliable.

The outer periphery of the lock cylinder 6 is provided with a first screw thread (not shown in the figure), the inner side of the pressing piece 7 is provided with a second screw thread (not shown in the figure), and the first screw thread is in threaded connection with the second screw thread. The pressing piece 7 can be screwed with the lock column 6 through the threaded connection of the first screw thread and the second screw thread, and the structure is stable and reliable.

The pressing piece 7 comprises a connecting portion 71 and a pressing portion 72 which are connected together, the second screw thread is arranged on the connecting portion 71, the outer wall of the pressing portion 72 is conical, the opening size of one end, close to the connecting portion 71, of the pressing portion 72 is larger than that of one end, far away from the connecting portion 71, of the pressing portion 72, and the pressing portion 72 presses the pressing sleeve 8 on the first joint cover 4. The casting die 7 sets up to the design including connecting portion 71 and sticiss portion 72, and when the second thread on connecting portion 71 was screwed with the first thread of lock post 6 periphery, the toper appearance of sticiss portion 72 can press sticiss cover 8 promptly to sticiss first joint lid 4 through sticiss cover 8, guarantee that first joint lid 4 can sticiss the wire on waterproof joint 3, fixed waterproof joint 3 is more reliable.

The waterproof connector comprises a waterproof connector body and is characterized in that a support 31 and a conducting strip 33 are arranged on the inner side of the waterproof connector body 3, the support 31 is fixedly connected with the waterproof connector body 3, a through hole is formed in the support 31, the conducting strip 33 penetrates through the through hole and is fixed with the support 31, and an inner conducting wire 91 is electrically connected with an outer conducting wire 92 through the conducting strip 33. The support 31 supports the conductive strip 33, the inner conductive wire 91 and the outer conductive wire 92 are electrically connected through the conductive strip 33, the connection between the inner conductive wire 91 and the outer conductive wire 92 is stable, and the connection position between the inner conductive wire 91 and the outer conductive wire 92 is fixed and reliable.

The number of the conductive strips 33 is three. Three conductive strips 33 are arranged in one waterproof connector 3, so that one waterproof connector 3 can be connected with a live wire, a zero wire and a ground wire respectively as required.

The support 31 is further provided with a separation frame 32, the separation frame 32 is in a Y shape, and three conductive strips 33 are separated by the separation frame 32. The Y-shaped separator 32 separates the three conductors to form a reliable insulation between them, ensuring reliable line insulation between the live, neutral and ground conductors.

The lock cylinder 6 is made of ceramic. The ceramic has good insulativity and heat resistance, and the lock cylinder 6 is made of ceramic with high durability and safety.

The lock cylinder 6 is made of boron nitride ceramics. The boron nitride ceramic has good heat resistance, thermal stability, thermal conductivity and high-temperature dielectric strength, is ideal application in heat dissipation and insulation environments, and has good chemical stability and excellent durability.

The material of the pressing sleeve 8 is rubber. The material of the pressing sleeve 8 adopts rubber, so that the cost is low and the durability is good.

While the preferred embodiment of the present utility model has been described in detail, the utility model is not limited to the embodiments, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the utility model, and these equivalent modifications and substitutions are intended to be included in the scope of the utility model as defined in the appended claims.

Claims

1. The dry-type transformer is characterized in that: comprising the following steps: the waterproof connector (3) is fixedly connected with the box body (1), the waterproof connector (3) passes through the side wall of the box body (1), the waterproof connector (3) comprises an inner end part positioned at the inner side of the box body (1) and an outer end part positioned at the outer side of the box body (1), the transformer winding (2) comprises a wiring terminal, the wiring terminal is connected with an inner lead (91), the other end of the inner lead (91) stretches into the inner end part, an outer lead (92) led outwards is arranged in the outer end part, the inner lead (91) and the outer lead (92) are electrically connected in the waterproof connector (3), the first connector cap (4) and the inner end part are screwed to lock the lead with the waterproof connector (3), the second connector cap (5) and the outer lead are screwed to lock the lead (3) on the inner end part, the soft sleeve (8) is pressed on the side wall of the box body (6), the pressing piece (7) is screwed with the lock column (6) to press the inner end part of the pressing sleeve (8).

2. A dry-type transformer according to claim 1, wherein: the periphery of lock post (6) is equipped with first screw thread, the inboard of casting die (7) is equipped with the second screw thread, first screw thread with second screw thread threaded connection.

3. A dry transformer according to claim 2, wherein: the pressing piece (7) comprises a connecting portion (71) and a pressing portion (72) which are connected together, the second screw thread is arranged on the connecting portion (71), the outer wall of the pressing portion (72) is conical, the opening size of one end, adjacent to the connecting portion (71), of the pressing portion (72) is larger than that of one end, far away from the connecting portion (71), of the pressing portion, and the pressing portion (72) presses the pressing sleeve (8) on the first joint cover (4).

4. A dry transformer according to claim 2, wherein: the waterproof connector is characterized in that a support (31) and a conducting strip (33) are arranged on the inner side of the waterproof connector (3), the support (31) is fixedly connected with the waterproof connector (3), a through hole is formed in the support (31), the conducting strip (33) penetrates through the through hole and is fixed with the support (31), and the inner conducting wire (91) is electrically connected with the outer conducting wire (92) through the conducting strip (33).

5. The dry-type transformer according to claim 4, wherein: the number of the conductive strips (33) is three.

6. The dry-type transformer according to claim 5, wherein: the support (31) is also provided with a separation frame (32), the separation frame (32) is Y-shaped, and three conducting strips (33) are separated by the separation frame (32).

7. A dry transformer according to claim 2, wherein: the lock cylinder (6) is made of ceramic.

8. The dry-type transformer according to claim 6, wherein: the lock cylinder (6) is made of boron nitride ceramics.

9. A dry-type transformer according to claim 1, wherein: the pressing sleeve (8) is made of rubber.