Automatic alarm device for transformer cabinet

Abstract

The utility model relates to the field of transformer cabinet, concretely relates to an automatic alarm device of transformer cabinet, including transformer cabinet alarm shell, the main part for carrying out transformer cabinet alarm, smoke temperature composite detection machine body, fixedly installed in the inside of transformer cabinet alarm shell is used for detecting the smoke and temperature of inductance. The utility model is provided with smoke temperature composite detection machine body, interval frame, upper induction frame, thermal expansion composite metal sheet, propelling block, point touch cover, point contact and point contact head, when using the automatic alarm device of transformer cabinet, after the temperature in transformer cabinet rises, the thermal expansion composite metal sheet installed above and below transformer cabinet alarm shell is heated, continues to expand according to the original bending appearance, the part of thermal expansion composite metal sheet bending is in contact with propelling block and makes propelling block slide in the inside of transformer cabinet alarm shell, makes the point contact of point touch cover and point contact each other.

Description

Technical Field

[0001] This utility model relates to the field of transformer cabinets, and specifically to an automatic alarm device for transformer cabinets. Background Technology

[0002] A transformer cabinet is a metal enclosure used to install and protect transformers. It is usually made of metal sheets and has functions such as protection, heat dissipation, and ease of maintenance. The transformer cabinet is usually equipped with temperature control, ventilation and heat dissipation, and safety protection facilities to ensure that the transformer can operate safely and stably even in harsh environments. The automatic alarm device of the transformer cabinet is a device used to monitor the environmental parameters inside the transformer cabinet and trigger an alarm when an abnormality is detected. This device usually includes components such as sensors, controllers, and alarms. It can monitor the environmental parameters inside the transformer cabinet in real time and issue an alarm signal in a timely manner when an abnormality is detected, so as to remind relevant personnel to take measures to prevent accidents from occurring or escalating.

[0003] The existing automatic alarm devices for transformer cabinets lack means to improve sensitivity and rapid response capabilities. This causes the automatic alarm devices to rely on a single trigger condition, resulting in inaccurate detection results and missed alarms. Over time, the overall response time of the automatic alarm devices for transformer cabinets becomes lagging. In emergencies, this lag can delay fault handling, increase the risk of accidents, and increase maintenance and replacement costs, requiring regular manual inspections.

[0004] Therefore, it is necessary to invent an automatic alarm device for transformer cabinets to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an automatic alarm device for a transformer cabinet. This design, achieved through a smoke and temperature composite detection body, a spacer frame, an upper sensing frame, a thermally expanding composite metal sheet, a pusher block, a contact sleeve, a contactor, and a contact head, improves the sensitivity and rapid response capability of the automatic alarm device. The mechanical and electrical linkage design ensures immediate alarm activation in case of temperature anomalies, with a response time significantly superior to purely electronic sensors. Furthermore, it can simultaneously monitor smoke concentration and temperature changes, reducing the risk of false alarms based on a single parameter. This design also minimizes manual intervention, avoiding delays caused by manual inspections, and enhancing the automatic operation of the transformer cabinet. The automatic alarm device is suitable for transformer cabinets in remote or high-risk areas. It addresses the shortcomings of existing automatic alarm devices in transformer cabinets, which lack means to improve sensitivity and rapid response. This leads to reliance on single trigger conditions, resulting in inaccurate detection results and missed alarms. Over time, the overall response time of the automatic alarm device becomes sluggish. In emergencies, this lag can delay fault handling, increase the risk of accidents, and increase maintenance and replacement costs, requiring regular manual inspections.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic alarm device for a transformer cabinet, comprising a transformer cabinet alarm housing and a main body for performing transformer cabinet alarm functions;

[0007] The smoke and temperature composite detector body is fixedly installed inside the transformer cabinet alarm housing to detect the sensed smoke and temperature. The smoke and temperature composite detector body is fixedly installed above and below the detector body. The transformer cabinet alarm housing is fixedly installed above and below the detector body. The upper sensing frame is fixedly installed inside the upper sensing frame.

[0008] The push block is slidably connected to the upper and lower parts of the transformer cabinet alarm housing for pushing. The push block is fixedly installed with telescopic springs on both sides of its exterior. A contact sleeve is fixedly installed at the bottom of the push block. A contactor is fixedly installed inside the upper sensor frame. A contact head is fixedly installed above the contactor.

[0009] The outer protective cylinders are all fixedly installed on the outside of the transformer cabinet alarm housing to provide protection. Telescopic cylinders are fixedly installed on both sides of the upper sensor frame. A smoke sensor is fixedly installed on the top of the telescopic cylinder, and a temperature sensor is fixedly installed on the other side of the smoke sensor.

[0010] Preferably, buzzers are fixedly installed on both sides of the outer side of the transformer cabinet alarm housing, and mounting plates are fixedly installed on the outer side of the transformer cabinet alarm housing, with positioning bolts passing through the external threads of the mounting plates.

[0011] Preferably, a sealing plate is fixedly installed on the back of the transformer cabinet alarm housing, and strong magnetic blocks are fixedly installed on the outside of the sealing plate.

[0012] Preferably, the contact sleeve is slidably connected to the housing of the transformer cabinet alarm, and the contact sleeve and the contact head are used together.

[0013] Preferably, the number of the outer protective cylinders is set to four, and the four outer protective cylinders are distributed at equal intervals on the transformer cabinet alarm housing.

[0014] Preferably, the smoke sensor and temperature sensor are slidably connected to the outer protective cylinder, and the outer protective cylinder is symmetrically arranged along the central axis of the sensing frame above it.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] This utility model includes a smoke and temperature composite detector body, a spacer frame, an upper sensing frame, a thermally expanding composite metal sheet, a pusher block, a contact sleeve, a contactor, and a contact head. When the automatic alarm device for the transformer cabinet is used, after the internal temperature of the transformer cabinet rises, the thermally expanding composite metal sheets installed above and below the alarm housing are heated and continue to expand in their original curved shape. The curved part of the thermally expanding composite metal sheet abuts against the pusher block, causing the pusher block to slide inside the alarm housing, allowing the contact sleeve and the contact head of the contactor to come into contact with each other. This activates the connection between the smoke and temperature composite detector body and the contactor wires, and drives the smoke through a telescopic cylinder. The sensors and temperature sensors slide out to detect the smoke and temperature inside the transformer cabinet. This allows for timely automatic alarm activation upon reaching the warning point. This design improves the sensitivity and rapid response of the transformer cabinet's automatic alarm device. The mechanical and electrical linkage design ensures that the alarm is activated immediately when the temperature is abnormal, with a response time significantly better than purely electronic sensors. Moreover, it can simultaneously monitor smoke concentration and temperature changes, reducing the risk of false alarms based on a single parameter. At the same time, this design reduces manual intervention and avoids delays caused by manual inspections, making the automatic alarm device suitable for transformer cabinets in remote or high-risk areas. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the buzzer structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the spacer structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the contact sleeve structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the smoke sensor structure of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Transformer cabinet alarm housing; 2. Buzzer; 3. Mounting plate; 4. Positioning bolts; 5. Enclosure plate; 6. Strong magnetic block; 7. Smoke and temperature composite detector body; 8. Spacer frame; 9. Upper sensor frame; 10. Thermal expansion composite metal sheet; 11. Propulsion block; 12. Telescopic spring; 13. Contact sleeve; 14. Contactor; 15. Contact head; 16. Outer protective cylinder; 17. Telescopic cylinder; 18. Smoke sensor; 19. Temperature sensor. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figure 1-5 The automatic alarm device for a transformer cabinet shown includes a transformer cabinet alarm housing 1 and a main body for alarming the transformer cabinet.

[0027] The smoke and temperature composite detector body 7 is fixedly installed inside the transformer cabinet alarm housing 1 to detect the sensed smoke and temperature. A spacer 8 is fixedly installed above and below the smoke and temperature composite detector body 7. An upper sensing frame 9 is fixedly installed above and below the transformer cabinet alarm housing 1. A thermal expansion composite metal sheet 10 is fixedly installed inside the upper sensing frame 9.

[0028] The push block 11 is slidably connected to the top and bottom of the transformer cabinet alarm housing 1 for pushing. The push block 11 is fixedly installed with telescopic springs 12 on both sides of its exterior. The push block 11 is fixedly installed with a contact sleeve 13 at its bottom. The upper sensor frame 9 is fixedly installed with a contactor 14 inside. The contactor 15 is fixedly installed above the contactor 14.

[0029] The outer protective cylinder 16 is fixedly installed on the outside of the transformer cabinet alarm housing 1 to provide protection. Telescopic cylinders 17 are fixedly installed on both sides of the upper sensing frame 9. A smoke sensor 18 is fixedly installed on the top of the telescopic cylinder 17, and a temperature sensor 19 is fixedly installed on the other side of the smoke sensor 18. The push block 11 slides inside the transformer cabinet alarm housing 1, allowing the contact sleeve 13 and the contact head 15 of the contactor 14 to come into contact with each other. This activates the wire connection between the smoke and temperature composite detector 7 and the contactor 14. The telescopic cylinder 17 drives the smoke sensor 18 and the temperature sensor 19 to slide out and detect the smoke and temperature inside the transformer cabinet. This allows for timely and automatic alarm sounding when the alarm point is reached.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, buzzers 2 are fixedly installed on both sides of the outer side of the transformer cabinet alarm housing 1. Mounting plates 3 are fixedly installed on the outer side of the transformer cabinet alarm housing 1. Positioning bolts 4 are threaded through the outer side of the mounting plates 3. The mounting plates 3 and positioning bolts 4 are used to provide a method for the automatic alarm device of the transformer cabinet to be directly threaded onto the transformer cabinet. A sealing plate 5 is fixedly installed on the back of the transformer cabinet alarm housing 1. A strong magnetic block 6 is fixedly installed on the outer side of the sealing plate 5. The sealing plate 5 and the strong magnetic block 6 can directly magnetically attach the automatic alarm device of the transformer cabinet to the transformer cabinet, thereby completing the installation. The contact sleeve 13 is slidably connected to the transformer cabinet alarm housing 1. The contact sleeve 13 and the contact head 15 work together. The bent part of the thermal expansion composite metal sheet 10 abuts against the push block 11, causing the push block 11 to slide inside the transformer cabinet alarm housing 1, so that the contact sleeve 13 and the contact head 15 of the contactor 14 come into contact with each other. In this way, the electrical connection between the smoke and temperature composite detector body 7 and the contactor 14 is activated.

[0031] like Figure 1 , Figure 4 and Figure 5 As shown, the number of outer protective cylinders 16 is set to four, and the four outer protective cylinders 16 are evenly distributed on the transformer cabinet alarm housing 1. The smoke sensor 18 and temperature sensor 19 are driven out of the outer protective cylinders 16 by the telescopic cylinder 17 to detect the smoke and temperature inside the transformer cabinet. The smoke sensor 18 and temperature sensor 19 are slidably connected to the outer protective cylinders 16. The outer protective cylinders 16 are symmetrically arranged on the central axis of the sensing frame 9 above the sensing cylinders 16. The smoke sensor 18 and temperature sensor 19 can simultaneously monitor smoke concentration and temperature changes, reducing the risk of false alarms from a single parameter.

[0032] The working principle of this practical application is as follows: First, inside the transformer cabinet where the alarm device needs to be installed, remove the automatic alarm device from the transformer cabinet. Different installation methods can be selected according to the current installation and usage requirements of the transformer cabinet. It can be directly threaded onto the transformer cabinet using the mounting plate 3 and positioning bolts 4, or it can be magnetically attached to the transformer cabinet using the sealing plate 5 and strong magnetic block 6, thus completing the installation. Then, connect the external power supply, and the automatic alarm device is officially installed and used inside the transformer cabinet. After the internal temperature of the transformer cabinet rises, the thermal expansion composite metal sheets 10 installed above and below the alarm housing 1 are heated and continue to expand in their original curved shape. Then, the curved part of the thermal expansion composite metal sheet 10 abuts against the pushing block 11, causing the pushing block 11 to slide inside the alarm housing 1, allowing the contact sleeve 13 and the contact head 15 of the contactor 14 to come into contact. This activates the wire connection between the smoke and temperature composite detector body 7 and the contactor 14. Subsequently, the telescopic cylinder 17 drives the smoke sensor 18 and temperature sensor 19 to slide out. The system detects smoke and temperature inside the transformer cabinet, triggering an automatic alarm upon reaching the warning point. This design enhances the sensitivity and rapid response of the automatic alarm device, ensuring immediate activation of the alarm in case of temperature anomalies. The response time is significantly faster than purely electronic sensors. Furthermore, it simultaneously monitors smoke concentration and temperature changes, reducing the risk of false alarms based on a single parameter. After external inspectors control and process the alarm, the internal temperature of the transformer cabinet decreases, causing the thermal expansion composite metal sheet 10 to spring back to its original position. The pushed block 11, which was resisted, slides under the action of the telescopic spring 12, disengaging the contact sleeve 13 from the contact head 15. This allows the automatic alarm device to re-enter the warning state. Finally, the installation and use of the automatic alarm device are completed according to the above operations. The telescopic cylinder 17 is then switched off. If the device is not used for an extended period, the external power supply should be disconnected. The thermal expansion composite metal sheet 10 is made of iron-nickel alloy. This completes the operation of the automatic alarm device for the transformer cabinet.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic alarm device for a transformer cabinet, characterized in that: include Transformer cabinet alarm housing (1), the main body used for transformer cabinet alarm; The smoke and temperature composite detector body (7) is fixedly installed inside the transformer cabinet alarm housing (1) for detecting the sensed smoke and temperature. The smoke and temperature composite detector body (7) is fixedly installed above and below the spacer frame (8). The transformer cabinet alarm housing (1) is fixedly installed above and below the spacer frame (9). The upper sensing frame (9) is fixedly installed inside the upper sensing frame (9). The push block (11) is slidably connected to the upper and lower parts of the transformer cabinet alarm housing (1) for pushing. The push block (11) is fixedly installed with telescopic springs (12) on both sides of its exterior. The push block (11) has a contact sleeve (13) fixedly installed at its bottom. The upper sensor frame (9) has a contactor (14) fixedly installed inside. The contactor (14) has a contact head (15) fixedly installed above its top. The outer protective cylinder (16) is fixedly installed on the outside of the transformer cabinet alarm housing (1) to provide protection. Telescopic cylinders (17) are fixedly installed on both sides of the upper sensor frame (9). A smoke sensor (18) is fixedly installed on the top of the telescopic cylinder (17), and a temperature sensor (19) is fixedly installed on the other side of the smoke sensor (18).

2. The automatic alarm device for a transformer cabinet according to claim 1, characterized in that: Buzzers (2) are fixedly installed on both sides of the outer side of the transformer cabinet alarm housing (1). Mounting plates (3) are fixedly installed on the outer side of the transformer cabinet alarm housing (1). Positioning bolts (4) are threaded through the outer side of the mounting plates (3).

3. The automatic alarm device for a transformer cabinet according to claim 1, characterized in that: A sealing plate (5) is fixedly installed on the back of the transformer cabinet alarm housing (1), and a strong magnetic block (6) is fixedly installed on the outside of the sealing plate (5).

4. The automatic alarm device for a transformer cabinet according to claim 1, characterized in that: The contact sleeve (13) is slidably connected to the transformer cabinet alarm housing (1), and the contact sleeve (13) and the contact head (15) are used together.

5. The automatic alarm device for a transformer cabinet according to claim 1, characterized in that: The number of the outer protective cylinders (16) is set to four, and the four outer protective cylinders (16) are distributed at equal intervals on the transformer cabinet alarm housing (1).

6. The automatic alarm device for a transformer cabinet according to claim 1, characterized in that: The smoke sensor (18) and temperature sensor (19) are slidably connected to the outer protective cylinder (16), and the outer protective cylinder (16) is symmetrically arranged on the central axis of the upper sensing frame (9).

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