Silicon controlled rectifier valve group with air cooling heat dissipation assembly

Abstract

The utility model discloses a silicon controlled rectifier valve group with an air cooling heat dissipation assembly, which relates to the technical field of heater control and comprises an accommodating box, a plurality of groups of paired radiators are arranged in an inner cavity of the accommodating box, and silicon controlled rectifiers are clamped among the groups of radiators. The radiator is used for absorbing heat generated by the thyristor; the heat dissipation box is used for bearing the containing box, a plurality of heat dissipation fans are arranged in the heat dissipation box, the positions of all the heat dissipation fans correspond to the positions of all the sets of radiators, and the heat dissipation fans are used for blowing airflow to the heat dissipation fans; and the valve group control board is used for sending trigger signals to the silicon controlled rectifiers and controlling the on and off of the silicon controlled rectifiers. The silicon controlled rectifier valve group with the air cooling heat dissipation assembly achieves the technical effects of accurately regulating and controlling the temperature of the silicon controlled rectifier and improving the heat dissipation performance of the silicon controlled rectifier assembly.

Description

Technical Field

[0001] This utility model relates to the field of heater control technology, and in particular to a thyristor valve group with an air-cooled heat dissipation component. Background Technology

[0002] With the development of various industries, users have increasingly higher demands and requirements for electric heating power control cabinets. Under the premise of improving performance, it is usually necessary to simplify the structure of the electric heating power control cabinet and stabilize its heat dissipation performance. In particular, the integration and heat dissipation performance of the thyristor valve group module are especially important. The thyristor generates a lot of heat during operation. If this heat is not dissipated in time, it will cause the temperature of the thyristor to rise, affecting its performance and reliability.

[0003] In summary, developing a thyristor valve assembly with efficient and stable heat dissipation performance is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a thyristor valve assembly with an air-cooled heat dissipation component, which solves the technical problem of the market's increasing requirements for heat dissipation effect and heat dissipation stability of electric heating cabinets.

[0005] To achieve the above objectives, this utility model provides a thyristor valve assembly with an air-cooled heat dissipation component, comprising:

[0006] The housing has several pairs of heat sinks inside, with a thyristor sandwiched between each pair of heat sinks. The heat sinks are used to absorb the heat generated by the thyristor.

[0007] A heat sink box contains a housing box. Inside the heat sink box are several cooling fans, each corresponding to a group of heat sinks. The cooling fans are used to blow airflow onto the heat sinks.

[0008] The valve group control board is used to send trigger signals to each thyristor and to control the conduction and cutoff of the thyristors.

[0009] Preferably, the heat sink includes a bracket that is attached to the thyristor. The bracket has several heat sink fins evenly arranged on both sides of the thyristor. Each heat sink fin is parallel to the direction of the airflow blown by the cooling fan. A locking member is connected between pairs of brackets to ensure that each heat sink is tightly attached to the thyristor.

[0010] Preferably, adjacent heat sinks are connected by connecting plates, each connecting plate being Z-shaped. Each connecting plate consists of parallel plates, and each plate is fixed to the heat sink on both sides of the adjacent thyristor.

[0011] Preferably, the heat sink is provided with a sliding guide rail on the side away from the housing. The sliding guide rail includes a lower guide rail with a groove and an upper guide rail that can be slidably disposed in the groove. The lower guide rail is fixedly connected to the ground and the upper guide rail is fixedly connected to the heat sink.

[0012] Preferably, each group of radiators is provided with a first insulating post and a second insulating post on both sides. The second insulating post is connected to an insulating plate. The first insulating post and the insulating plate are both connected to an insulating channel steel frame. The insulating channel steel frame is used to support the insulating plate and each radiator. The insulating channel steel frame also connects the housing and the radiator housing.

[0013] Preferably, a handle is provided on the side wall of the heat sink that is perpendicular to the sliding guide rail.

[0014] Preferably, the side of the insulating plate away from the heat sink is provided with several aluminum-cased resistors and capacitors, and each aluminum-cased resistor and capacitor is connected in parallel with each thyristor.

[0015] Preferably, a number of fixing bolts are inserted between the side wall of the container and the insulating channel steel frame, and an insulating gasket is provided between each fixing bolt and the side wall of the container.

[0016] Preferably, there are three cooling fans, and three pairs of heat sinks are arranged in pairs. Two thyristors are sandwiched between each pair of heat sinks, and each thyristor is connected to a valve group control board.

[0017] Preferably, each thyristor is equipped with a temperature sensor, and each temperature sensor is connected to the valve group control board, enabling the valve group control board to adjust the power of the cooling fan.

[0018] Compared to the aforementioned background technology, the thyristor valve group with air-cooled heat dissipation components provided by this utility model includes: a housing box, inside which are arranged several pairs of heat sinks, with a thyristor sandwiched between the pairs of heat sinks. The heat sinks absorb the heat generated by the thyristor. A heat dissipation box is provided at the bottom of the housing box, and the inner cavity of the heat dissipation box is connected to the inner cavity of the housing box. A cooling fan is provided inside the heat dissipation box, with each cooling fan corresponding to the position of each heat sink group. Each thyristor is connected to each valve group control board. The valve group control board sends a trigger signal to the thyristor, which causes the thyristor to switch to a conducting state. Current can be conducted through the thyristor, generating heat while transmitting current. The cooling fan is activated to blow airflow onto the heat sinks, which absorb the heat generated by the thyristor. The airflow passes through each heat sink, carrying the heat absorbed by the heat sink to the outside of the thyristor valve group, effectively reducing the temperature of the thyristor after it is energized and ensuring that the thyristor has stable and reliable conduction performance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 A structural diagram of a thyristor valve assembly with air-cooled heat dissipation components provided in an embodiment of this utility model;

[0021] Figure 2 This is a structural diagram of a concealed housing for a silicon controlled rectifier valve assembly with a wind-cooled heat dissipation component, provided in an embodiment of the present invention.

[0022] Figure 3 This is a structural diagram of a single heat sink provided in an embodiment of the present utility model;

[0023] Figure 4 This is a structural diagram of the heat sink provided in an embodiment of the present utility model;

[0024] Figure 5 This is a structural diagram of the heat sink and thyristor assembly provided in an embodiment of the present invention.

[0025] Among them, 1-accommodation box; 2-radiator; 3-thyristor; 4-heat dissipation box; 41-handle; 5-heat dissipation fan; 6-valve group control board; 7-connecting plate; 8-sliding guide rail; 81-upper guide rail; 82-lower guide rail; 9-first insulating post; 10-second insulating post; 11-insulating board; 12-insulating channel steel frame; 13-aluminum shell resistor; 14-capacitor; 15-locking component. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] This utility model provides a thyristor valve assembly with a wind-cooled heat dissipation component. Please refer to the appendix of the instruction manual. Figure 1 To be continued Figure 5The thyristor valve group includes a housing 1 for accommodating each valve group component. The housing 1 has several heat sinks 2 inside, and each heat sink 2 is arranged in pairs. A thyristor 3 is sandwiched between the pairs of heat sinks 2. A thyristor (Silicon Controlled Rectifier) ​​is also known as an SCR, which is a high-power electrical component, also called a thyristor.

[0029] When the thyristor 3 is in the conducting state, it generates heat. The heat sink 2, which is in contact with the thyristor 3, absorbs the heat generated. A heat sink 4 is provided below the housing 1, and the inner cavity of the heat sink 4 is connected to the inner cavity of the housing 1. Several cooling fans 5 are provided inside the heat sink 4, and each cooling fan 5 corresponds to a pair of heat sinks 2. When the cooling fans 5 are activated, they blow airflow towards the side closest to the heat sink 2. The airflow carries the heat absorbed by the heat sink 2 away from the interior of the thyristor valve group, ensuring that the thyristor 3 located inside the housing 1 is in a suitable working environment. It should be noted that the thyristor 3 is a controllable rectifier that can convert alternating current into direct current. When no positive voltage is applied between the anode and cathode of the thyristor 3 or the control electrode does not receive a trigger signal, the thyristor 3 is in the off state. When the control electrode of the thyristor 3 receives a positive pulse, the thyristor 3 is in the conducting state, allowing current to pass through. The thyristor 3 can adjust the current magnitude through a control signal. Each thyristor 3 is connected to a valve group control board 6. Each valve group control board 6 receives the control signal from the operator and converts the control signal into a trigger signal that the thyristor 3 can receive. Each valve group control board 6 controls the conduction, cut-off and maximum current allowed through each thyristor 3.

[0030] In one embodiment of this application, the aforementioned thyristor 3 valve group is located inside the electric heating power control cabinet. When the user needs to change the working state of the electric heating power control cabinet, the valve group control board 6 outputs an adjustment signal to the thyristor 3, and the thyristor 3 changes the magnitude of the allowable current, thereby changing the power of the electric heating power control cabinet. During the conduction of current by the thyristor 3, the thyristor 3 generates heat due to its own resistance. When the thyristor 3 switches to the conducting state, the cooling fan 5 is activated, and the cooling fan 5 blows airflow to the radiator 2. The radiator 2 clamps the thyristor 3 and absorbs the heat generated by the thyristor 3. When the airflow passes through the radiator 2, it carries the heat to the outside of the housing 1. The radiator 2 increases the heat dissipation area of ​​the thyristor 3, ensuring that the thyristor 3 is kept at a suitable working temperature, avoiding the increase in resistance caused by temperature rise, and the decrease in the current that the thyristor 3 can conduct, which would cause a deviation between the actual working efficiency and the target working efficiency of the electric heating power control cabinet.

[0031] Preferably, each heat sink 2 includes a bracket that fits against the silicon controlled rectifier (SCR) 3. The surface of the bracket that fits against the SCR 3 is smooth to avoid the formation of tiny gaps between the bracket and the SCR 3 after they fit together, which would affect the heat transfer from the SCR 3 to the heat sink 2. The bracket extends along the length of the housing 1 to both sides of the SCR 3 with wing plates. Several heat dissipation fins are evenly arranged on each wing plate. Each heat dissipation fin is parallel to the direction of the airflow blown by the cooling fan 5, ensuring that the airflow blown by the cooling fan 5 passes smoothly through the heat sink 2, so that the airflow can carry away the heat absorbed by the heat sink 2 in time. In addition, a locking member 15 is provided between each pair of heat sinks 2. The locking member 15 can be a double-ended bolt. Locking nuts are screwed on both sides of the double-ended bolt. Each locking nut pushes against the opposite bracket, so that the heat sink 2 tightly clamps the SCR 3, preventing gaps from forming between the SCR 3 and the heat sink 2, and improving the heat transfer efficiency between the SCR 3 and the heat sink 2.

[0032] Please refer to the instruction manual appendix. Figure 2 A connecting plate 7 is provided between each adjacent group of heat sinks 2. Preferably, the connecting plate 7 is Z-shaped. The connecting plate 7 connects each heat sink 2 and stabilizes the setting of each heat sink 2. In addition, the parallel plates on both sides of the connecting plate 7 are located on both sides of the thyristor 3. Each plate is fixed to the heat sink 2 on both sides of the adjacent thyristor 3. When each thyristor 3 is in the conducting state, the thyristor 3 generates heat due to its own resistance. The heat sink 2 in contact with the thyristor 3 absorbs the heat and is carried away from the housing 1 by the airflow blown by the cooling fan 5. However, since each thyristor 3 is located in a different position in the circuit, the airflow through... The current of each thyristor 3 and the voltage applied to both sides of each thyristor 3 may deviate, resulting in different amounts of heat generated by each thyristor 3. Preferably, the connecting plate 7 is made of a material with high thermal conductivity and is coated with an insulating coating on its outer periphery. When the heat generated by adjacent thyristors 3 is different, the temperature of the heat sink 2 that is attached to them is also different. The connecting plate 7 located between each adjacent heat sink 2 transfers the heat from the heat sink 2 with a higher temperature to the heat sink 2 with a lower temperature, so that each heat sink 2 can dissipate heat together. The connecting plate 7 improves the heat dissipation efficiency of the thyristor 3 valve group while ensuring the stability of each thyristor 3.

[0033] A sliding guide rail 8 is provided on the side of the heat sink 4 away from the housing 1. The sliding guide rail 8 includes a lower guide rail 82 fixed to the ground below and an upper guide rail 81 fixedly connected to the housing 1. The lower guide rail 82 is provided with a groove that cooperates with the upper guide rail 81. The upper guide rail 81 can slide in the groove. A handle 41 is provided on the side wall of the heat sink 4 perpendicular to the length of the groove. When the thyristor 3 valve group fails or is under regular maintenance, the operator can pull the handle 41 to move the thyristor valve group out of the electric heating power control cabinet for easy maintenance.

[0034] Please refer to the instruction manual appendix. Figure 3Several first insulating posts 9 and second insulating posts 10 are connected to both sides of the radiator 2 along the thickness direction of the heat sink 4. It should be noted that an insulating channel steel frame 12 is provided inside the housing 1. The insulating channel steel frame 12 is used to support each radiator 2 and each thyristor 3. In addition, the insulating channel steel frame 12 also connects the housing 1 and the heat sink 4. Each first insulating post 9 is connected to the insulating channel steel frame 12, and the second insulating posts 10 are connected to an insulating plate 11. Several aluminum-cased resistors 13 and capacitors are installed on the side of the insulating plate 11 away from each radiator 2. 14. Each aluminum-cased resistor 13 and capacitor 14 is connected in parallel with each thyristor 3. The aluminum-cased resistor 13 allows some current to pass through, so that the current is diverted before flowing through the thyristor 3. After being connected in parallel, the voltage across the thyristor 3 is reduced, ensuring that the current and voltage in the circuit are within a controllable range. The capacitor 14 connected in parallel with the thyristor 3 prevents the self-induced electromotive force generated by the electric heating power regulating cabinet when the circuit is disconnected, which could cause overvoltage in the circuit and damage the thyristor 3. The capacitor 14 plays a buffering and absorption role to protect the thyristor 3.

[0035] Preferably, a number of fixing bolts are inserted between the container 1 and the insulating channel steel frame 12. An insulating gasket is provided between the head of each fixing bolt and the outer wall of the container 1 to prevent the fixing bolts from damaging the insulating coating on the outer wall of the container 1 during the tightening process, so as to prevent the container 1 from having the risk of leakage.

[0036] Preferably, each thyristor 3 is equipped with a temperature sensor, which is connected to the valve group control board 6. It should be noted that the number of paired heat sinks 2 is the same as the number of cooling fans 5, and each cooling fan 5 corresponds one-to-one with each heat sink 2. Each cooling fan 5 is connected to the valve group control board 6. When the temperature sensor detects that the temperature of the thyristor 3 exceeds the suitable temperature, the valve group control board 6 sends a start signal to the cooling fan 5, and the cooling fan 5 dissipates heat from the thyristor 3. In addition, when the temperature of one thyristor 3 exceeds that of other thyristors 3, the valve group control board 6 connected to it increases the power of the corresponding cooling fan 5. If the temperature of the thyristor 3 does not drop to normal after a period of cooling operation, the valve group control board 6 sends a start signal to the alarm to remind the operator to check and maintain it.

[0037] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0038] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A thyristor valve assembly with an air-cooled heat dissipation component, characterized in that, include: The container (1) has a plurality of pairs of heat sinks (2) in its inner cavity, and a thyristor (3) is sandwiched between each pair of heat sinks (2). The heat sinks (2) are used to absorb the heat generated by the thyristor (3). A heat dissipation box (4) carries the housing box (1). The heat dissipation box (4) is provided with a plurality of heat dissipation fans (5). Each heat dissipation fan (5) corresponds to the position of each group of heat sinks (2). The heat dissipation fan (5) is used to blow airflow to the heat sink (2). The valve group control board (6) is used to send trigger signals to each of the thyristors (3), and the valve group control board (6) is used to control the conduction and cutoff of the thyristors (3).

2. The thyristor valve assembly with air-cooled heat dissipation components according to claim 1, characterized in that, The heat sink (2) includes a bracket that fits against the thyristor (3). The bracket has several heat sink fins evenly arranged on both sides of the thyristor (3). Each heat sink fin is parallel to the direction of the airflow blown by the cooling fan (5). A locking member (15) is connected between pairs of brackets. The locking member (15) makes each heat sink (2) fit tightly against the thyristor (3).

3. The thyristor valve assembly with air-cooled heat dissipation components according to claim 2, characterized in that, The adjacent heat sinks (2) are connected by connecting plates (7). Each connecting plate (7) is specifically Z-shaped. Each connecting plate (7) includes parallel plates, and each plate is fixed on the heat sinks (2) on both sides of the adjacent thyristor (3).

4. The thyristor valve assembly with air-cooled heat dissipation components according to claim 3, characterized in that, The heat sink (4) is provided with a sliding guide rail (8) on the side away from the housing (1). The sliding guide rail (8) includes a lower guide rail (82) with a groove and an upper guide rail (81) that can be slidably disposed in the groove. The lower guide rail (82) is fixedly connected to the ground and the upper guide rail (81) is fixedly connected to the heat sink (4).

5. The thyristor valve assembly with air-cooled heat dissipation components according to claim 4, characterized in that, Each heat sink (2) has a first insulating post (9) and a second insulating post (10) on both sides. The second insulating post (10) is connected to the insulating plate (11). The first insulating post (9) and the insulating plate (11) are both connected to the insulating channel steel frame (12). The insulating channel steel frame (12) is used to support the insulating plate (11) and each heat sink (2). The insulating channel steel frame (12) also connects the receiving box (1) and the heat sink box (4).

6. The thyristor valve assembly with air-cooled heat dissipation component according to claim 5, characterized in that, The heat sink (4) has a handle (41) on its side wall perpendicular to the sliding guide rail (8).

7. The thyristor valve assembly with air-cooled heat dissipation component according to claim 6, characterized in that, The insulating plate (11) is provided with a number of aluminum-cased resistors (13) and capacitors (14) on the side away from the heat sink (2), and each of the aluminum-cased resistors (13) and capacitors (14) is connected in parallel with each of the thyristors (3).

8. The thyristor valve assembly with air-cooled heat dissipation component according to claim 7, characterized in that, A number of fixing bolts are provided between the side wall of the container (1) and the insulating channel steel frame (12), and an insulating gasket is provided between each fixing bolt and the side wall of the container (1).

9. The thyristor valve assembly with air-cooled heat dissipation component according to claim 1, characterized in that, Each of the thyristors (3) is equipped with a temperature sensor, and each of the temperature sensors is connected to the valve group control board (6) so that the valve group control board (6) can adjust the power of the cooling fan (5).

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