Sealing structure for outgoing line bar of electric reactor
By using a sealed structure for the reactor output line, combined with a sealed protective sheet metal layer, insulating elastic seals, and ventilation channels, the heat dissipation problem of the reactor in the energy storage converter system is solved, achieving a balance between high sealing level and effective heat dissipation, thereby improving the overall reliability and reducing costs.
Patent Information
- Application Number
- CN202520247263.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-17
AI Technical Summary
In energy storage converter systems, the heat dissipation design of reactors is difficult to achieve effective heat dissipation under high protection levels and insulation requirements, resulting in poor cost and reliability.
The reactor output terminal block adopts a sealing structure, including a sealing and protective sheet metal layer, an insulating elastic seal, and a ventilation channel. The output terminal block is sealed by an insulating silicone rubber sleeve, and forced air cooling is combined to achieve a high sealing level and effective heat dissipation.
While ensuring the insulation and high protection level of the reactor output busbars, effective heat dissipation is achieved, improving the overall reliability and reducing costs.
Smart Images
Figure CN223898139U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of heat dissipation equipment for electronic components, and in particular to the technical field of a sealing structure for the output busbar of a reactor. Background Technology
[0002] Currently, in energy storage converter systems, reactors are crucial components for regulating system current, voltage, and harmonic values. Due to their large size and numerous welds involved in manufacturing, reactors often exhibit significant tolerances in their final structural installation. The reactor's input and output busbars are conductive components and require excellent insulation from the metal casing. During operation, the reactor carries a large current, resulting in substantial heat generation. Therefore, heat dissipation design is a critical indicator affecting the overall reliability of the system. In the power electronics industry, reactors typically employ forced air cooling. Since high-power energy storage converters are mostly outdoor units, the entire converter requires a high protection rating. Furthermore, reactor heat dissipation necessitates airflow and convection with the outside environment. Often, to meet these heat dissipation requirements, numerous complex protective measures are implemented to ensure high overall protection, resulting in compromised cost and reliability. Summary of the Invention
[0003] The purpose of this invention is to solve the problems in the prior art by proposing a sealing structure for the reactor output busbar, which enables the reactor output busbar to have a high sealing level of overall sheet metal protection while meeting the insulation requirements, and also meets the requirements of effective external heat dissipation.
[0004] To achieve the above objectives, this utility model proposes a sealing structure for the output terminal of a reactor, comprising a reactor body, a sealing and protective sheet metal layer, an insulating elastic sealant, and a ventilation channel. The outer side of the reactor body is covered with a sealing and protective sheet metal layer. The sealing and protective sheet metal layer is provided with protective perforations corresponding to the output terminal and input terminal positions of the reactor body. The protective perforations are filled with insulating elastic sealants. A ventilation channel is provided on the upper part of the sealing and protective sheet metal layer.
[0005] Preferably, the reactor body is a three-phase reactor, and the reactor body is provided with 3 incoming line bars and 3 outgoing line bars.
[0006] Preferably, the insulating elastic seal includes a silicone rubber sleeve and an insulating pressure plate, wherein the silicone rubber sleeve is embedded in the insulating pressure plate and the silicone rubber sleeve elastically contacts and seals the inlet and outlet terminals respectively.
[0007] Preferably, the reactor body is a forced air-cooled reactor.
[0008] Preferably, the sealed protective sheet metal layer has a high-sealing protective cavity inside, and the sealed protective sheet metal layer has a heat dissipation channel that is sealed and isolated from the high-sealing protective cavity. The heat dissipation channel is connected to the ventilation channel.
[0009] Preferably, the insulating elastic seal is a high-temperature resistant elastic seal.
[0010] Preferably, the top opening of the ventilation channel is located at the top of the reactor body, and the sealing and protective sheet metal layer is a high thermal conductivity sheet metal layer.
[0011] The beneficial effects of this utility model are as follows: This utility model combines the reactor body, the sealed protective sheet metal layer, the insulating elastic sealant, and the ventilation channel. Through experimental optimization, the reactor output busbar passes through the sheet metal cavity from a high-protection-level sheet metal cavity while being insulated from the sheet metal parts. Without reducing the original structural protection level, the reactor output busbar meets the insulation requirements, and the overall sheet metal protection has a high sealing level while also meeting the requirements for effective external heat dissipation.
[0012] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description
[0013] Figure 1 This is a top view schematic diagram of the sealing structure of the output terminal block of a reactor according to the present invention;
[0014] Figure 2 This is a schematic diagram of the main structure of a reactor output terminal sealing structure according to the present invention;
[0015] Figure 3 This is a three-dimensional structural diagram of a reactor output line sealing structure according to the present invention.
[0016] In the diagram: 1-Reactor body, 2-Sealed protective sheet metal layer, 3-Insulating elastic seal, 4-Ventilation channel. Detailed Implementation
[0017] See Figure 1 , Figure 2 and Figure 3This utility model discloses a sealing structure for the output terminals of a reactor, comprising a reactor body 1, a sealing and protective sheet metal layer 2, an insulating elastic seal 3, and a ventilation channel 4. The outer side of the reactor body 1 is covered by the sealing and protective sheet metal layer 2. The sealing and protective sheet metal layer 2 has protective perforations corresponding to the output and input terminals of the reactor body 1. The protective perforations are filled with insulating elastic seals 3. A ventilation channel 4 is provided on the upper part of the sealing and protective sheet metal layer 2. The reactor body 1 is a three-phase reactor, with three input terminals and three output terminals. The insulating elastic seal 3... The sealing element 3 includes a silicone rubber sleeve and an insulating pressure plate. The silicone rubber sleeve is embedded in the insulating pressure plate and is elastically sealed to the inlet and outlet terminals respectively. The reactor body 1 is a forced air-cooled reactor. The sealing and protective sheet metal layer 2 has a high-sealing protective cavity inside. The sealing and protective sheet metal layer 2 has a heat dissipation channel that is sealed and isolated from the high-sealing protective cavity. The heat dissipation channel is connected to the ventilation channel 4. The insulating elastic seal 3 is a high-temperature resistant elastic seal. The top opening of the ventilation channel 4 is located at the top of the reactor body 1. The sealing and protective sheet metal layer 2 is a high thermal conductivity sheet metal layer.
[0018] The reactor body 1 of this utility model is placed in a sheet metal cavity with sealed sides. The sheet metal around the reactor body has holes at the corresponding positions of the reactor's output terminals. The gap after the output terminals pass through the holes is sealed by an insulating silicone rubber sleeve. The insulating elastic sealing element 3 is composed of a silicone rubber sleeve and an insulating pressure plate, which has good elasticity and a high temperature resistance range. When the reactor body 1 is working, it generates heat, which is carried away through the ventilation channel 4 at the top of the sheet metal cavity. In this way, without reducing the original structural protection level and ensuring that the reactor output terminals meet the insulation requirements, the overall sheet metal protection has a high sealing level, while also meeting the requirements for effective external heat dissipation. In the sealing structure of the reactor's output terminals, the insulating silicone rubber sleeve is used to seal the input and output terminals. That is, the reactor output terminals pass through the sheet metal holes, and the gap between the output terminals and the sheet metal cavity is sealed by the insulating silicone rubber sleeve. This achieves the goal of the output terminals passing through the sheet metal cavity and being insulated from the sheet metal parts without affecting the overall protection performance. The above structure allows the reactor to have good protection while dissipating heat, and has the advantages of simple structure, low cost, and high manufacturability.
[0019] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.
Claims
1. A sealing structure for the output terminal of a reactor, characterized in that: The reactor body (1) includes a sealed protective sheet metal layer (2), an insulating elastic seal (3), and a ventilation channel (4). The outer side of the reactor body (1) is covered with a sealed protective sheet metal layer (2). The sealed protective sheet metal layer (2) has protective perforations at the outlet and inlet positions of the reactor body (1). The protective perforations are filled with insulating elastic seals (3). The upper part of the sealed protective sheet metal layer (2) has a ventilation channel (4).
2. The reactor output terminal sealing structure as described in claim 1, characterized in that: The reactor body (1) is a three-phase reactor, and the reactor body (1) is provided with 3 incoming line bars and 3 outgoing line bars.
3. The reactor output terminal sealing structure as described in claim 1, characterized in that: The insulating elastic seal (3) includes a silicone rubber sleeve and an insulating pressure plate. The silicone rubber sleeve is embedded in the insulating pressure plate and the silicone rubber sleeve is elastically sealed to the inlet and outlet terminals respectively.
4. The reactor output terminal sealing structure as described in claim 1, characterized in that: The reactor body (1) is a forced air-cooled reactor.
5. The reactor output terminal sealing structure as described in claim 1, characterized in that: The sealed protective sheet metal layer (2) has a high-sealing protective cavity inside, and the sealed protective sheet metal layer (2) has a heat dissipation channel that is sealed and isolated from the high-sealing protective cavity inside, and the heat dissipation channel is connected to the ventilation channel (4).
6. The reactor output terminal sealing structure as described in claim 1, characterized in that: The insulating elastic seal (3) is a high-temperature resistant elastic seal.
7. The reactor output terminal sealing structure as described in claim 1, characterized in that: The top opening of the ventilation channel (4) is located on the top of the reactor body (1), and the sealing and protective sheet metal layer (2) is a high thermal conductivity sheet metal layer.