Thermal anti-theft device

By installing a temperature sensor and a limit switch inside the locking valve cap of the heat anti-theft device, combined with a convenient installation structure, the problem of slow response in existing heat anti-theft devices is solved, achieving rapid and accurate heat theft warning and convenient installation.

CN223938826UActive Publication Date: 2026-02-24CHANGYUAN DUNAN ENERGY CONSERVATION HEATING CO LTD
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Patent Information

Application Number
CN202520337565.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-28
Publication Date
2026-02-24
Estimated Expiration
2035-02-28

AI Technical Summary

Technical Problem

Existing heat anti-theft devices suffer from high false alarm rates and slow response times, failing to provide quick and accurate real-time feedback, making it difficult to effectively prevent heat theft.

Method used

The valve cap features a built-in temperature sensor and limit switch to monitor temperature and opening status in real time, and provides feedback via a circuit board. It can be easily installed on heat transfer pipes using the mounting structure.

Benefits of technology

It features a rapid-response alarm system to prevent heat theft, is easy to operate, adapts to heat delivery pipes of different diameters, and has high installation compatibility.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a thermal anti-theft device, which belongs to the technical field of thermal anti-theft and comprises a locking valve main body, a connecting end pipe is arranged on the locking valve main body, and a thermal conveying pipe is arranged on the connecting end pipe. The temperature sensor and the limit switch are arranged in the locking valve cap, the temperature sensor monitors the temperature at the position of the locking valve in real time, the limit switch monitors the opening state of the locking valve cap, information feedback can be conducted in the first time, an alarm system can make a quick response, heat theft can be effectively eradicated, and the safety of a user is improved. The locking valve cap is arranged on the heat delivery pipe through the mounting structure, the fixing sleeve is adopted for sleeving and is used in cooperation with the first elastic piece, the second elastic piece, the rotating screw and the nut, fixing and dismounting can be rapidly carried out, dismounting and mounting of the locking valve cap are facilitated, the operation convenience is high, and the practicability is high. And the first elastic sheet and the second elastic sheet can elastically deform, so that the device is suitable for heating power conveying pipes with different diameters, and the mounting adaptability is high.
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Description

Technical Field

[0001] This utility model relates to the field of thermal anti-theft technology, and in particular to thermal anti-theft devices. Background Technology

[0002] Every year, heating companies see a number of customers requesting heating service suspension for various reasons. Among these customers, a significant portion do so to reduce heating fees, but in reality, they are illegally connecting to the heating pipelines to steal heat, causing substantial economic losses to the heating companies. To prevent this, each heating company has established a separate inspection department. However, due to the sheer number of customers suspending heating, it is impossible to accurately identify those stealing heat, and comprehensive, blanket inspections result in a significant waste of manpower and resources.

[0003] To avoid losses and prevent theft of heating, heating anti-theft devices are installed at the entrance pipes of the house. Traditional anti-theft systems mostly rely on cameras, infrared sensors, etc., but these systems may have problems such as high false alarm rate and slow response speed, and cannot provide fast and accurate real-time feedback, making them less effective for heating anti-theft. Utility Model Content

[0004] The main purpose of this utility model is to provide a thermal anti-theft device, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A thermal anti-theft device includes a locking valve body, a connecting end pipe on the locking valve body, a heat conveying pipe on the connecting end pipe, a locking valve cap installed on the heat conveying pipe, the locking valve cap being located at the upper end of the locking valve body, a temperature sensor installed inside the locking valve cap, a limit switch installed inside the locking valve cap, and mounting structures at both ends of the locking valve cap, the mounting structures being installed on the heat conveying pipe.

[0007] Preferably, a support frame is fixed on the main body of the locking valve, and an opening and closing ball is provided inside the main body of the locking valve, and an adjusting wheel is provided on the main body of the locking valve.

[0008] Preferably, the end of the connecting pipe is provided with a first connecting flange, and the end of the heat conveying pipe is provided with a second connecting flange, and the second connecting flange is connected to the first connecting flange.

[0009] Preferably, the inside of the locking valve cap is provided with a circuit board, and the circuit board is provided with a cable passing through the locking valve cap. The temperature sensor and the limit switch are both connected to the circuit board through connecting wires.

[0010] Preferably, the mounting structure includes a fixing plate, a fixing sleeve, a first elastic plate, a rotating seat, a rotating screw, a second elastic plate, a round hole, and a nut. The fixing plate is fixedly connected to the fixing sleeve, and the fixing plate and the fixing sleeve are fixed on the locking valve cap. The first elastic plate and the second elastic plate are fixed at both ends of the fixing sleeve.

[0011] Preferably, the rotating seat is fixedly mounted on the first elastic plate, the rotating screw is rotatably mounted on the rotating seat, the circular hole is opened on the second elastic plate, the lower end of the rotating screw passes through the circular hole, and the lower end of the rotating screw is threadedly connected to the nut.

[0012] Compared with the prior art, this utility model has the following beneficial effects: This thermal anti-theft device, through the setting of a locking valve cap, has a temperature sensor and a limit switch installed inside the locking valve cap. The temperature sensor monitors the temperature at the locking valve in real time, and the limit switch monitors the opening status of the locking valve cap, which can provide information feedback immediately, enabling the alarm system to respond quickly and effectively preventing thermal theft. The locking valve cap is installed on the thermal conveying pipe through an installation structure and is fitted with a fixing sleeve. It is used in conjunction with the first elastic plate, the second elastic plate, the rotating screw, and the nut, which can be quickly fixed and disassembled, making it easy to install and remove the locking valve cap. The operation is highly convenient. The first and second elastic plates can undergo elastic deformation, making them suitable for thermal conveying pipes of different diameters, and the installation adaptability is high. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the locking valve cap of this utility model;

[0015] Figure 3 This is a schematic diagram of the installation structure of this utility model.

[0016] In the diagram: 1. Locking valve body; 2. Connecting end pipe; 3. Heat transfer pipe; 4. Locking valve cap; 5. Circuit board; 6. Temperature sensor; 7. Limit switch; 8. Mounting structure; 801. Fixing plate; 802. Fixing sleeve; 803. First elastic plate; 804. Rotating seat; 805. Rotating screw; 806. Second elastic plate; 807. Round hole; 808. Nut; 9. Cable; 10. First connecting flange; 11. Second connecting flange. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] like Figures 1-3 As shown, the thermal anti-theft device includes a locking valve body 1, a connecting end pipe 2 on the locking valve body 1, a thermal conveying pipe 3 on the connecting end pipe 2, a locking valve cap 4 installed on the thermal conveying pipe 3, and the locking valve cap 4 located at the upper end of the locking valve body 1. A temperature sensor 6 is installed inside the locking valve cap 4, and a limit switch 7 is installed inside the locking valve cap 4. Mounting structures 8 are provided at both ends of the locking valve cap 4, and the mounting structures 8 are installed on the thermal conveying pipe 3.

[0019] A support frame is fixed on the main body 1 of the shut-off valve, and an opening / closing ball is installed inside the main body 1. An adjusting wheel is also provided on the main body 1. A first connecting flange 10 is provided at the end of the connecting pipe 2, and a second connecting flange 11 is provided at the end of the heat transfer pipe 3, with the second connecting flange 11 connected to the first connecting flange 10. A circuit board 5 is provided inside the shut-off valve cap 4, and a cable 9 passes through the circuit board 5. The temperature sensor 6 and the limit switch 7 are both connected to the circuit board 5 via connecting wires.

[0020] When installing the thermal anti-theft device, the locking valve is fixed to the thermal conveying pipe 3 through the connecting end pipe 2. The circuit board 5, temperature sensor 6 and limit switch 7 are installed inside the locking valve cap 4. The temperature sensor 6 and limit switch 7 are electrically connected to the circuit board 5. The cable 9 on the circuit board 5 is installed through it. The locking valve cap 4 is installed on the thermal conveying pipe 3 using the mounting structure 8. At this time, the locking valve cap 4 is located above the locking valve body 1. The temperature sensor 6 contacts the connecting end pipe 2, and the limit switch 7 contacts the support frame.

[0021] During operation, for users who have paid their heating bills, if the temperature sensor 6 detects that the temperature of the shut-off valve is lower than the set value, it will provide feedback and trigger an alarm. At this time, the shut-off valve is in an closed state. Maintenance personnel will open the shut-off valve and reset it to clear the alarm, at which point the user will receive normal heating. For all users outside the heating season and users who are in arrears during the heating season, under normal circumstances, both the shut-off valve and the shut-off valve cap 4 should be closed, and the temperature of the shut-off valve should be below the set temperature. If someone opens the shut-off valve cap 4 or the shut-off valve temperature is higher than the high alarm temperature, it is determined that the user is using heat or someone has opened the shut-off valve. At this time, the system will alarm, and the user's heat theft status will be displayed abnormally in the user list. On-site confirmation is required. Similarly, after opening the valve, the cap should be replaced, and the limit switch 7 will close. At this time, the system has already alarmed, and the user's heat theft status will still be displayed abnormally, but the limit switch 7 in the user list will be closed. On-site confirmation is still required. After confirming that there is no abnormality, a reset is required to clear the alarm and restore the user's heat theft status to normal.

[0022] According to the above implementation scheme, the installation structure 8 includes a fixing plate 801, a fixing sleeve 802, a first elastic plate 803, a rotating seat 804, a rotating screw 805, a second elastic plate 806, a round hole 807, and a nut 808. The fixing plate 801 is fixedly connected to the fixing sleeve 802, and the fixing plate 801 and the fixing sleeve 802 are fixed on the locking valve cap 4. The first elastic plate 803 and the second elastic plate 806 are fixed at both ends of the fixing sleeve 802. The rotating seat 804 is fixedly installed on the first elastic plate 803, and the rotating screw 805 is rotatably installed on the rotating seat 804. The round hole 807 is opened in the second elastic plate 806, and the lower end of the rotating screw 805 passes through the round hole 807, and the lower end of the rotating screw 805 is threadedly connected to the nut 808.

[0023] When installing the locking valve cap 4, the locking valve cap 4 is placed on the heat conveying pipe 3, and the fixing sleeve 802 at the fixing plate 801 is fitted onto the heat conveying pipe 3. Then, the first elastic plate 803 and the second elastic plate 806 are operated to deform the two elastic plates. The rotating screw 805 rotates on the rotating seat 804. After the end of the rotating screw 805 passes through the round hole 807, the nut 808 is installed for adjustment until the two elastic plates are clamped onto the heat conveying pipe 3, thereby completing the installation and fixing of the locking valve cap 4.

[0024] It should be noted that the locking valve cap 4 is equipped with a temperature sensor 6 and a limit switch 7 inside. The temperature sensor 6 monitors the temperature at the locking valve in real time, while the limit switch 7 monitors the opening status of the locking valve cap 4. This allows for immediate feedback of information, enabling the alarm system to respond quickly and effectively preventing heat theft. The locking valve cap 4 is mounted on the heat transfer pipe 3 via the mounting structure 8 and is connected using a fixing sleeve 802. It works in conjunction with the first elastic plate 803, the second elastic plate 806, the rotating screw 805, and the nut 808, allowing for quick fixing and disassembly. This facilitates the installation and removal of the locking valve cap 4 and provides high operational convenience. The first elastic plate 803 and the second elastic plate 806 can undergo elastic deformation, making them suitable for heat transfer pipes 3 of different diameters, resulting in high installation adaptability.

[0025] The foregoing describes the working principle, features, and beneficial effects of this utility model. Those skilled in the art will understand from the foregoing that it does not limit the utility model. The embodiments and description above illustrate the basic principles and features of this utility model. Various changes and improvements can be made to this utility model while remaining consistent with its concept, and all such improvements should fall within the scope of protection claimed by this utility model.

Claims

1. A thermal anti-theft device, comprising a locking valve body (1), wherein the locking valve body (1) is provided with a connecting end pipe (2), and the connecting end pipe (2) is provided with a heat conveying pipe (3), characterized in that: A locking valve cap (4) is installed on the heat transfer pipe (3), and the locking valve cap (4) is located at the upper end of the locking valve body (1). A temperature sensor (6) is installed inside the locking valve cap (4), and a limit switch (7) is provided inside the locking valve cap (4). An installation structure (8) is provided at both ends of the locking valve cap (4), and the installation structure (8) is installed on the heat transfer pipe (3).

2. The thermal anti-theft device according to claim 1, characterized in that: The locking valve body (1) is fixed with a support frame, and the locking valve body (1) is provided with an opening and closing ball inside, and the locking valve body (1) is provided with an adjusting wheel.

3. The thermal anti-theft device according to claim 2, characterized in that: The end of the connecting pipe (2) is provided with a first connecting flange (10), and the end of the heat conveying pipe (3) is provided with a second connecting flange (11), and the second connecting flange (11) is connected to the first connecting flange (10).

4. The thermal anti-theft device according to claim 3, characterized in that: The inside of the locking valve cap (4) is provided with a circuit board (5), and the circuit board (5) is provided with a cable (9) that runs through the locking valve cap (4). The temperature sensor (6) and the limit switch (7) are both connected to the circuit board (5) through a connecting wire.

5. The thermal anti-theft device according to claim 4, characterized in that: The mounting structure (8) includes a fixing plate (801), a fixing sleeve (802), a first elastic piece (803), a rotating seat (804), a rotating screw (805), a second elastic piece (806), a round hole (807), and a nut (808). The fixing plate (801) is fixedly connected to the fixing sleeve (802), and the fixing plate (801) and the fixing sleeve (802) are fixed on the locking valve cap (4). The first elastic piece (803) and the second elastic piece (806) are fixed at both ends of the fixing sleeve (802).

6. The thermal anti-theft device according to claim 5, characterized in that: The rotating seat (804) is fixedly mounted on the first elastic plate (803), the rotating screw (805) is rotatably mounted on the rotating seat (804), the round hole (807) is opened on the second elastic plate (806), the lower end of the rotating screw (805) passes through the round hole (807), and the lower end of the rotating screw (805) is threadedly connected to the nut (808).