Surge protection device with built-in temperature self-adaptive structure

Abstract

The utility model discloses a surge protection device with a built-in temperature self-adaptive structure, which comprises a shell, and a group of sliding seats are arranged in an inner cavity of the shell; the sliding block is connected to an inner cavity in one end of the sliding base in a sliding mode, and one end of the sliding block can make contact with the sheet-shaped spring. The spiral spring is arranged at the other end of the sliding block; according to the utility model, the dynamic adjustment of the performance of the surge protection device is realized, the adverse effect of temperature on the mechanical property of the spring is effectively overcome, the adaptability and reliability of the surge protection device in different temperature environments are improved, the service life of equipment is prolonged, and the service life of the equipment is prolonged. And the equipment fault risk caused by the temperature factor is reduced.

Description

Technical Field

[0001] This utility model relates to the field of surge protector technology, specifically a surge protector with a built-in temperature adaptive structure. Background Technology

[0002] In modern power systems, surge protectors are key devices that protect electrical equipment from transient overvoltage surges. To ensure stable operation under different ambient temperatures, some products have incorporated a built-in temperature adaptive structure. This structure typically uses a temperature sensing element to detect changes in ambient temperature and drive relevant components to adjust their performance, ensuring that the surge protector can operate normally in both high and low temperature environments. Meanwhile, some surge protectors employ a mechanism where a spring pushes the fuse-broken connecting piece to disconnect the connection. When a surge causes the connecting piece to fuse, the spring releases its preload and quickly pushes the connecting piece away, promptly cutting off the faulty circuit and ensuring the safety of downstream equipment.

[0003] However, existing surge protectors with integrated temperature adaptive structures have significant drawbacks. The pre-compression of the spring, as a key parameter determining its elastic force, is generally not adjustable. On the one hand, changes in ambient temperature directly affect the mechanical properties of the spring. At high temperatures, the spring's elastic modulus decreases and its elastic force weakens, while at low temperatures it becomes stiff and slow to respond. A fixed pre-compression cannot compensate for the performance fluctuations caused by temperature. Therefore, it is necessary to design surge protectors with built-in temperature adaptive structures to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a surge protector with a built-in temperature adaptive structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a surge protector with a built-in temperature adaptive structure, including a housing, wherein a set of slides is installed in the inner cavity of the housing;

[0006] A slider is slidably connected to the inner cavity of one end of the slide block, and one end of the slider can contact a leaf spring;

[0007] A helical spring, wherein the helical spring is disposed at the other end of the slider;

[0008] An adjustment component for adjusting the pre-compression of the helical spring.

[0009] Preferably, the adjusting assembly includes a screw and an adjusting nut. A set of the screws is installed in the inner cavity of the slide block, and the slider is sleeved on the screws and can slide along its axial direction. A set of the adjusting nuts is threaded onto the external of the screws. One end of the helical spring contacts the slider, and the other end contacts the adjusting nut. The pre-compression of the helical spring can be changed by rotating the adjusting nut.

[0010] Preferably, the leaf spring can be electrically connected to a set of connection terminals of the varistor through a hot-melt process, and the varistor is fixed to the inner wall of the housing.

[0011] Preferably, the end of the leaf spring furthest from the slider is fixedly connected to the input terminal by two sets of bolts.

[0012] Preferably, the other set of connecting ends is fixedly connected to the output terminal by two sets of bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model realizes dynamic adjustment of the surge protector's performance, effectively overcomes the adverse effects of temperature on the spring's mechanical properties, improves the surge protector's adaptability and reliability under different temperature environments, extends the equipment's service life, and reduces the risk of equipment failure caused by temperature factors.

[0015] 2. This utility model allows for adjustment of the pre-compression amount simply by rotating the adjusting nut, facilitating installation and maintenance. It can precisely adjust the spring pre-compression amount according to different temperature environments, significantly enhancing the surge protector's adaptability to temperature changes. It effectively solves the problem that a fixed pre-compression amount cannot cope with temperature effects, improving the reliability and stability of the surge protector and ensuring its normal operation under various temperature conditions.

[0016] 3. This utility model utilizes the temperature sensitivity of the hot-melt material to actively disconnect the connection when the varistor overheats without the need for additional control circuitry, preventing the risk of device burnout or fire due to continuous heating. Under normal operation, the hot-melt process ensures tight contact between the sheet spring and the varistor, resulting in low conductivity resistance. In case of abnormal heating, the connection is quickly disconnected to prevent the fault from escalating. The input and output terminals are connected to the sheet spring and varistor via bolts, facilitating quick disassembly and replacement of the sheet spring or varistor after the hot-melt connection is disconnected. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the overall structure of the present invention.

[0018] Figure 2 This utility model Figure 1 Enlarged view of point A;

[0019] Figure 3 This utility model Figure 1 Enlarged view of point B;

[0020] Figure 4 This is an exploded view of the overall structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the overall structure of this utility model.

[0022] In the diagram: 1. Housing; 2. Slide; 3. Slider; 4. Leaf spring; 5. Helical spring; 6. Screw; 7. Adjusting nut; 8. Varistor; 9. Input terminal; 10. Bolt; 11. Output terminal. Detailed Implementation

[0023] 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.

[0024] Example 1

[0025] Please refer to Figures 1-5 As shown, this utility model provides a surge protector with a built-in temperature adaptive structure, including a housing 1, and a set of slides 2 installed in the inner cavity of the housing 1;

[0026] Slider 3 is slidably connected to the inner cavity of one end of slide block 2, and one end of slider 3 can contact the leaf spring 4;

[0027] A helical spring 5 is disposed at the other end of the slider 3;

[0028] Adjustment component, used to adjust the pre-compression of helical spring 5.

[0029] When changes in ambient temperature affect the mechanical properties of the leaf spring 4 and the helical spring 5, the pre-compression of the helical spring 5 can be changed by adjusting the component. When the temperature rises, the elastic modulus of the spring decreases and the elastic force weakens. The adjusting component increases the pre-compression to enhance the elastic force. When the temperature drops, the spring becomes stiffer and the response is slow. The adjusting component decreases the pre-compression to optimize the response speed, thereby enabling the surge protector to maintain stable performance.

[0030] It enables dynamic adjustment of surge protector performance, effectively overcomes the adverse effects of temperature on spring mechanical properties, improves the adaptability and reliability of surge protector in different temperature environments, extends equipment service life, and reduces the risk of equipment failure due to temperature factors.

[0031] Specifically, the adjustment assembly includes a screw 6 and an adjusting nut 7. A set of screws 6 is installed in the inner cavity of the slide block 2. The slider 3 is sleeved on the screw 6 and can slide along its axial direction. A set of adjusting nuts 7 is connected to the external thread of the screw 6. One end of the helical spring 5 contacts the slider 3 and the other end contacts the adjusting nut 7. The pre-compression of the helical spring 5 can be changed by rotating the adjusting nut 7.

[0032] Before installation, operators adjust the pre-compression of the helical spring 5 by rotating the adjusting nut 7, based on the temperature baseline of the installation environment, such as the annual average temperature and extreme temperature difference. In high-temperature areas, the pre-compression is increased to compensate for the decrease in the elastic modulus of the spring under high temperatures, maintaining its elasticity. In low-temperature areas, the pre-compression is decreased to prevent the spring from stiffening and responding slowly due to low temperatures. Rotating the adjusting nut 7 causes it to move axially along the screw 6, pushing or pulling the helical spring 5, thereby changing its pre-compression. When the temperature rises, the spring force weakens, so the adjusting nut 7 is tightened to increase the pre-compression; when the temperature drops, the spring hardens, so the adjusting nut 7 is loosened to decrease the pre-compression, ensuring the surge protector maintains stable performance.

[0033] The pre-compression amount can be adjusted simply by rotating the adjusting nut 7, which is convenient for installation and maintenance. The spring pre-compression amount can be precisely adjusted according to different temperature environments, which significantly enhances the adaptability of the surge protector to temperature changes. It effectively solves the problem that a fixed pre-compression amount cannot cope with the influence of temperature, improves the reliability and stability of the surge protector, and ensures that it can function normally under various temperature conditions.

[0034] Wherein: the leaf spring 4 can be electrically connected to one set of connection terminals of the varistor 8 through a hot-melt process; the varistor 8 is fixed to the inner wall of the housing 1; one end of the leaf spring 4 away from the slider 3 is fixedly connected to the input terminal 9 through two sets of bolts 10; and the other set of connection terminals of 8 is fixedly connected to the output terminal 11 through two sets of bolts 10.

[0035] Current is conducted from input terminal 9 through bolt 10 to leaf spring 4, and then electrically connected to varistor 8 through hot melt process. The current is then output from output terminal 11 through bolt 10 at the other end of varistor 8, forming a current path. When varistor 8 heats up due to surge discharge or overload and the temperature rises to the melting point of the hot melt connection material, the material at the connection between leaf spring 4 and varistor 8 melts, the electrical connection is automatically disconnected, and the current path is cut off.

[0036] Utilizing the temperature sensitivity of the hot-melt material, the connection can be actively disconnected when the varistor 8 overheats without the need for additional control circuitry. This prevents the risk of device burnout or fire due to continuous heating. Under normal operation, the hot-melt process ensures that the sheet spring 4 and the varistor 8 are in close contact with each other and have low conductivity. In case of abnormal heating, the connection is disconnected quickly to prevent the fault from escalating. The input terminal 9 and the output terminal 11 are connected to the sheet spring 4 and the varistor 8 by bolts 10, which facilitates quick disassembly and replacement of the sheet spring 4 or the varistor 8 after the hot-melt connection is disconnected.

[0037] Working principle: Rotating the adjusting nut 7 causes it to move axially along the screw 6 due to its threaded connection with the screw 6. This movement pushes or pulls the helical spring 5, thus changing its pre-compression. As the temperature rises, the spring force weakens, so tightening the adjusting nut 7 increases the pre-compression. As the temperature falls, the spring hardens, so loosening the adjusting nut 7 decreases the pre-compression, maintaining the surge protector's stable performance. Current is conducted from the input terminal 9 through the bolt 10 to the leaf spring 4, which is then electrically connected to the varistor 8 via a heat-fusion process. The current is then output from the output terminal 11 through the bolt 10 at the other end of the varistor 8, forming a current path. When the varistor 8 heats up due to surge discharge or overload, reaching the melting point of the heat-fusion connection material, the material at the connection between the leaf spring 4 and the varistor 8 melts, automatically disconnecting the electrical connection and cutting off the current path.

[0038] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A surge protector with a built-in temperature adaptive structure, comprising a housing (1), characterized in that: A set of slides (2) are installed in the inner cavity of the housing (1); The slider (3) is slidably connected to the inner cavity of one end of the slide block (2), and one end of the slider (3) can contact the leaf spring (4); A helical spring (5) is disposed at the other end of the slider (3); An adjustment component is provided for adjusting the pre-compression of the helical spring (5).

2. The surge protector with a built-in temperature adaptive structure according to claim 1, characterized in that: The adjustment assembly includes a screw (6) and an adjusting nut (7). A set of the screws (6) is installed in the inner cavity of the slide (2). The slider (3) is sleeved on the screws (6) and can slide along its axial direction. A set of the adjusting nuts (7) is threaded onto the outside of the screws (6). One end of the helical spring (5) is in contact with the slider (3), and the other end is in contact with the adjusting nut (7). The pre-compression of the helical spring (5) can be changed by rotating the adjusting nut (7).

3. The surge protector with a built-in temperature adaptive structure according to claim 1, characterized in that: The leaf spring (4) can be electrically connected to a set of connection terminals of the varistor (8) through a hot-melt process, and the varistor (8) is fixed to the inner wall of the housing (1).

4. The surge protector with a built-in temperature adaptive structure according to claim 3, characterized in that: The end of the leaf spring (4) away from the slider (3) is fixedly connected to the input terminal (9) by two sets of bolts (10).

5. The surge protector with a built-in temperature adaptive structure according to claim 3, characterized in that: The other set of connection ends of (8) is fixedly connected to the output terminal (11) by two sets of bolts (10).

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