Dry-type transformer capable of rapidly dissipating heat

Abstract

The utility model discloses a dry-type transformer capable of rapidly dissipating heat, which comprises a bracket, an iron core, a lower clamping piece, an upper clamping piece, a screw rod, an insulating plate, a pulling plate, a low-voltage coil winding pouring body, a high-voltage coil winding pouring body, an insulating cushion block, a high-voltage lead, a low-voltage outgoing copper bar, a high-voltage outgoing copper bar and an axial flow fan, the lower clamping piece and the upper clamping piece are arranged at the lower end of the iron core and the front end wall and the rear end wall of the lower end of the iron core respectively, the two ends of the pulling plate are fixedly connected with the lower clamping piece and the upper clamping piece respectively, and the low-voltage coil winding pouring bodies are embedded into the high-voltage coil winding pouring bodies at intervals. A cooling air channel is formed between the outer circumferential wall of the low-voltage coil winding casting body and the inner circumferential wall of the high-voltage coil winding casting body, the iron core is provided with three core columns, and the low-voltage coil winding casting body is arranged on the core columns in a sleeved mode respectively. According to the technical scheme, the heat dissipation performance of the transformer can be effectively improved, the reliability of the transformer is improved, the service life of the transformer is prolonged, and practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer technical field, especially a kind of dry-type transformer of quick heat dissipation. BACKGROUND

[0002] Dry-type transformer is the transformer that iron core and winding are not impregnated in insulating oil, three-phase dry-type transformer is the main component of various power supply and electrical equipment.It is the device for changing alternating voltage using the principle of electromagnetic induction, and the main components are primary coil, secondary coil and iron core (magnetic core).In electrical equipment and wireless circuit, it is commonly used for voltage lifting, impedance matching, safety isolation, etc.In generator, no matter coil moves through magnetic field or magnetic field moves through fixed coil, potential can be induced in coil, and in the two cases, the value of magnetic flux is unchanged, but the amount of magnetic flux intersecting with coil is changed, which is the principle of mutual induction.Transformer is a kind of device for transforming voltage, current and impedance using electromagnetic mutual induction.The safe operation and service life of dry-type transformer depend largely on the safety and reliability of transformer winding insulation.The insulation is destroyed when winding temperature exceeds insulation tolerance temperature, which is one of the main reasons leading to abnormal operation of transformer, therefore, monitoring and alarm control of transformer operating temperature are very important.

[0003] However, the existing three-phase dry-type transformer on the market is mostly cooled by natural air, and the heat dissipation is not ideal, which can affect the reliability and service life of the transformer. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a kind of dry-type transformer of quick heat dissipation, to solve the technical problems that the existing three-phase dry-type transformer is cooled by natural air, and the heat dissipation is not ideal, which can affect the reliability and service life of the transformer.

[0005] To achieve the above object, the utility model provides a dry -type transformer of quick heat dissipation, including support, iron core, lower clamp piece, upper clamp piece, screw rod, insulating plate, draw plate, low voltage coil winding pouring body, high voltage coil winding pouring body, insulating pad, high voltage lead, low voltage copper bar, high voltage copper bar and axial flow fan, the support is side by side arrangement, the iron core is arranged on the support, the lower clamp piece and upper clamp piece are arranged on the front and rear two end walls of the lower end and lower end of the iron core respectively, the lower clamp piece is fixedly connected with the support, the screw rod is respectively worn in the lower clamp piece, upper clamp piece and iron core, the lower clamp piece and upper clamp piece are fixedly connected with the iron core through the screw rod, the insulating plate is arranged between the inner side wall of the lower clamp piece and upper clamp piece respectively, and the insulating plate is respectively in contact with the side wall of the iron core, the both ends of draw plate are fixedly connected with the lower clamp piece and upper clamp piece respectively, the low voltage coil winding pouring body and high voltage coil winding pouring body are solid insulation package winding, the low voltage coil winding pouring body is embedded in the high voltage coil winding pouring body at intervals, the outer peripheral wall of the low voltage coil winding pouring body and the inner peripheral wall of the high voltage coil winding pouring body form a cooling air channel, the iron core is equipped with three core columns, the low voltage coil winding pouring body is respectively sleeved on the core column, the insulating pad is arranged on the upper end wall of the lower clamp piece and the lower end wall of the upper clamp piece respectively, the insulating pad is respectively in contact with the upper and lower end walls of the low voltage coil winding pouring body and high voltage coil winding pouring body, the both ends of high voltage lead are electrically connected with the high voltage coil winding pouring body respectively, the low voltage copper bar and high voltage copper bar are arranged on the side wall of upper clamp piece respectively, the low voltage copper bar and high voltage copper bar are electrically connected with the low voltage coil winding pouring body and high voltage coil winding pouring body respectively, the axial flow fan is arranged on the both side walls of the lower clamp piece respectively.

[0006] Optionally, the screw rod is sleeved with a polyvinyl chloride insulating sleeve.

[0007] Optionally, the lower end of the support is provided with a plurality of mounting holes on both sides.

[0008] Optionally, it further includes a roller, and the roller is arranged on the lower bottom wall of the support.

[0009] Optionally, the iron core is formed by stacking cold-rolled grain-oriented silicon steel sheets, and an insulating material is arranged between adjacent silicon steel sheets.

[0010] Optionally, the upper end of the insulating pad is provided with a limiting protrusion, and the limiting protrusion is embedded in the cooling air channel.

[0011] The technical scheme of the utility model has the following beneficial effects: the technical scheme of the utility model, through the left and right parallel arrangement of the support, the iron core is arranged on the support, the lower clamp and the upper clamp are arranged on the front and back two end walls of the lower end and the lower end of the iron core respectively, the lower clamp is fixedly connected with the support, the screw rod is arranged in the lower clamp, the upper clamp and the iron core respectively, the lower clamp and the upper clamp are fixedly connected with the iron core through the screw rod, the insulating plate is arranged between the inner side walls of the lower clamp and the upper clamp respectively, the insulating plate abuts against the side wall of the iron core respectively, the two ends of the pull plate are fixedly connected with the lower clamp and the upper clamp respectively, the low-voltage coil winding pouring body and the high-voltage coil winding pouring body are solid insulation package windings, the low-voltage coil winding pouring body is embedded in the high-voltage coil winding pouring body at intervals, a cooling air channel is formed between the outer peripheral wall of the low-voltage coil winding pouring body and the inner peripheral wall of the high-voltage coil winding pouring body, the iron core is provided with three core columns, the low-voltage coil winding pouring body is sleeved on the core column, the insulating pad is arranged on the upper end wall of the lower clamp and the lower end wall of the upper clamp respectively, the insulating pad abuts against the upper and lower end walls of the low-voltage coil winding pouring body and the high-voltage coil winding pouring body respectively, the two ends of the high-voltage lead wire are electrically connected with the high-voltage coil winding pouring body respectively, the low-voltage outgoing line copper bar and the high-voltage outgoing line copper bar are electrically connected with the low-voltage coil winding pouring body and the high-voltage coil winding pouring body respectively, the axial flow fan is arranged on the two side walls of the lower clamp respectively, the forced heat dissipation of the axial flow fan can effectively improve the heat dissipation efficiency of the transformer, the heat generated by the transformer can be quickly dissipated to the air, the temperature rise of the transformer is avoided, the cooling air channel formed between the outer peripheral wall of the low-voltage coil winding pouring body and the inner peripheral wall of the high-voltage coil winding pouring body can quickly dissipate heat, the heat dissipation performance of the transformer is effectively improved, the reliability of the transformer is improved and the service life of the transformer is prolonged, and the practicability is high. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creating labor.

[0013] Fig. 1 It is the overall structure schematic diagram of a kind of quick heat dissipation dry-type transformer of an embodiment of the utility model;

[0014] Fig. 2 It is the overall structure schematic diagram of another view of a kind of quick heat dissipation dry-type transformer of an embodiment of the utility model;

[0015] Fig. 3 It is the partial exploded structure schematic diagram of a kind of quick heat dissipation dry-type transformer of an embodiment of the utility model;

[0016] Fig. 4 Figure 1 is a schematic structural view of a dry-type transformer according to an embodiment of the present application.

[0017] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0019] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0020] In addition, the technical solutions in each embodiment can be combined with each other, but it must be based on the fact that the technical solutions can be realized by those skilled in the art, and when the combination of the technical solutions appears contradictory or unachievable, it should be considered that the combination of the technical solutions does not exist and is not within the protection scope required by the present application.

[0021] The present application provides a dry-type transformer capable of rapid heat dissipation.

[0022] As Figs. 1 to 4As shown in the utility model one embodiment, this dry type transformer of quick heat dissipation, including support 101, core 102, lower clamp piece 103, upper clamp piece 104, screw rod 105, insulating plate (not shown), pull plate 106, low voltage coil winding pouring body 107, high voltage coil winding pouring body 108, insulating pad 109, high voltage lead 110, low voltage copper bar 111, high voltage copper bar 112 and axial flow fan 113, support 101 is side by side and arranged, core 102 is set up on support 101, lower clamp piece 103 and upper clamp piece 104 are set up on the front and rear two end walls of the lower end and lower end of core 102 respectively, lower clamp piece 103 is fixedly connected with support 101, screw rod 105 is respectively threaded in lower clamp piece 103, upper clamp piece 104 and core 102, lower clamp piece 103 and upper clamp piece 104 are fixedly connected with core 102 through screw rod 105, insulating plate is respectively set up between the inner side wall of lower clamp piece 103 and upper clamp piece 104, and the side wall of insulating plate is respectively in abutment with core 102, the both ends of pull plate 106 are fixedly connected with lower clamp piece 103 and upper clamp piece 104, low voltage coil winding pouring body 107 and high voltage coil winding pouring body 108 are all solid insulation package winding, low voltage coil winding pouring body 107 is embedded in high voltage coil winding pouring body 108 at intervals, the outer peripheral wall between low voltage coil winding pouring body 107 and the inner peripheral wall of high voltage coil winding pouring body 108 forms a cooling air duct, core 102 is equipped with three core columns 1021, low voltage coil winding pouring body 107 is respectively sleeved on core column 1021, insulating pad 109 is respectively set up on the upper end wall of lower clamp piece 103 and the lower end wall of upper clamp piece 104, insulating pad 109 is respectively in abutment with the upper and lower end walls of low voltage coil winding pouring body 107 and high voltage coil winding pouring body 108, the both ends of high voltage lead 110 are respectively electrically connected with high voltage coil winding pouring body 107, low voltage copper bar 111 and high voltage copper bar 112 are respectively set up on the side wall of upper clamp piece 104, low voltage copper bar 111 and high voltage copper bar 112 are respectively electrically connected with low voltage coil winding pouring body 107 and high voltage coil winding pouring body 108, axial flow fan 113 is respectively set up on the two side walls of lower clamp.

[0023] Specifically, screw rod 05 is respectively sleeved with a polyvinyl chloride insulating sleeve (not shown), and the polyvinyl chloride insulating sleeve serves as an insulator to enhance the insulation performance of the screw rod.

[0024] Specifically, the lower end of the support 101 is provided with a plurality of mounting holes 1011 on both sides, facilitating the installation and fixation of the transformer.

[0025] Specifically, it also includes a roller (not shown), which is arranged on the lower bottom wall of the support 101, facilitating the movement of the transformer.

[0026] Specifically, the iron core 102 is formed by stacking cold-rolled grain-oriented silicon steel sheets, and insulating materials are arranged between the adjacent two silicon steel sheets, the cold-rolled grain-oriented silicon steel sheets have the advantages of small static power consumption and high working efficiency, and the insulating materials arranged between the adjacent two silicon steel sheets can reduce the loss and noise of the iron core.

[0027] Specifically, the upper end of the insulating pad 109 is provided with a limiting protrusion 1091, and the limiting protrusion 1091 is embedded in the cooling air channel respectively, and the limiting protrusion plays a good limiting and supporting role on the outer peripheral wall of the low-voltage coil winding pouring body and the high-voltage coil winding pouring body.

[0028] Specifically, the working principle and process of the utility model are as follows:

[0029] Through the left and right side-by-side arrangement of the support, the iron core is arranged on the support, the lower clamp and the upper clamp are arranged on the front and rear end walls of the lower end and the lower end of the iron core respectively, the lower clamp is fixedly connected with the support, the screw rods are respectively arranged in the lower clamp, the upper clamp and the iron core, the lower clamp and the upper clamp are fixedly connected with the iron core through the screw rods, the insulating plates are arranged between the inner side walls of the lower clamp and the upper clamp respectively, and the insulating plates abut against the side walls of the iron core respectively, the two ends of the pull plate are fixedly connected with the lower clamp and the upper clamp respectively, the low-voltage coil winding pouring body and the high-voltage coil winding pouring body are solid insulation encapsulated windings, the low-voltage coil winding pouring body is embedded in the high-voltage coil winding pouring body at intervals, a cooling air channel is formed between the outer peripheral wall of the low-voltage coil winding pouring body and the inner peripheral wall of the high-voltage coil winding pouring body, the iron core is provided with three core columns, the low-voltage coil winding pouring body is sleeved on the core columns respectively, the insulating pads are arranged on the upper end wall of the lower clamp and the lower end wall of the upper clamp respectively, the insulating pads abut against the upper and lower end walls of the low-voltage coil winding pouring body and the high-voltage coil winding pouring body respectively, the two ends of the high-voltage lead are electrically connected with the high-voltage coil winding pouring body respectively, the low-voltage outgoing line copper bar and the high-voltage outgoing line copper bar are electrically connected with the low-voltage coil winding pouring body and the high-voltage coil winding pouring body respectively, the axial flow fans are arranged on the two side walls of the lower clamp respectively, and the heat generated by the transformer can be effectively dissipated to the air around through the forced heat dissipation of the axial flow fans, so that the heat dissipation efficiency of the transformer is effectively improved, the heat generated by the transformer is quickly dissipated to the air around, the temperature rise of the transformer is avoided, the cooling air channel formed between the outer peripheral wall of the low-voltage coil winding pouring body and the inner peripheral wall of the high-voltage coil winding pouring body can quickly dissipate heat, so that the heat dissipation performance of the transformer is effectively improved, the reliability of the transformer is improved, and the service life of the transformer is prolonged, and the utility is strong.

[0030] The above only describes the preferred embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made according to the utility model specification and the attached drawings or direct / indirect application in other related technical fields under the utility model concept of the utility model is included in the patent protection range of the utility model.

Claims

1. A dry-type transformer capable of rapid heat dissipation, characterized by comprising: The utility model provides a kind of transformer, including support, iron core, lower clamp, upper clamp, screw rod, insulating plate, pull plate, low voltage coil winding pouring body, high voltage coil winding pouring body, insulating pad, high voltage lead, low voltage copper bar, high voltage copper bar and axial flow fan, the support left and right side by side arrangement is set, the iron core is set on the support, the lower clamp and upper clamp are respectively set on the lower end of the iron core and the lower end of the two end walls before and after, the lower clamp is fixedly connected with the support, the screw rod is respectively threaded in the lower clamp, upper clamp and iron core, the lower clamp and upper clamp are fixedly connected with iron core by the screw rod, the insulating plate is respectively arranged between the inner side wall of the lower clamp and upper clamp, and the insulating plate is respectively in contact with the side wall of the iron core, the both ends of the pull plate are fixedly connected with the lower clamp and upper clamp, the low voltage coil winding pouring body and high voltage coil winding pouring body are solid insulation package winding, the low voltage coil winding pouring body is embedded in the high voltage coil winding pouring body at intervals, the outer circumferential wall of the low voltage coil winding pouring body and the inner circumferential wall of the high voltage coil winding pouring body form a cooling air channel, the iron core is equipped with three core columns, the low voltage coil winding pouring body is respectively sleeved on the core column, the insulating pad is respectively arranged on the upper end wall of the lower clamp and the lower end wall of the upper clamp, the insulating pad is respectively in contact with the upper and lower end walls of the low voltage coil winding pouring body and high voltage coil winding pouring body, the both ends of the high voltage lead are electrically connected with the high voltage coil winding pouring body, the low voltage copper bar and high voltage copper bar are respectively arranged on the side wall of upper clamp, the low voltage copper bar and high voltage copper bar are respectively electrically connected with the low voltage coil winding pouring body and high voltage coil winding pouring body, the axial flow fan is respectively arranged on the two side walls of the lower clamp.

2. The dry-type transformer of claim 1, wherein, The screw rod is respectively sleeved with a polyvinyl chloride insulating sleeve.

3. The dry-type transformer of claim 1, wherein, The lower end of the support is provided with a plurality of mounting holes on both sides.

4. The dry-type transformer of claim 1, wherein, Further comprising a roller, the roller is arranged on the lower bottom wall of the support.

5. The quick heat dissipating dry-type transformer according to claim 1, wherein The iron core is formed by stacking cold-rolled grain-oriented silicon steel sheets, and an insulating material is arranged between adjacent silicon steel sheets.

6. The quick heat dissipating dry-type transformer according to claim 1, wherein The upper end of the insulating pad is provided with a limiting protrusion, and the limiting protrusion is embedded in the cooling air channel.

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