A thermal anti-theft cap
By integrating temperature sensors and limit switches, the thermal anti-theft cap solves the problem of unauthorized heating use by users in arrears, enabling real-time monitoring and early warning, and reducing construction costs and maintenance difficulties.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGYUAN DUNAN ENERGY CONSERVATION HEATING CO LTD
- Filing Date
- 2025-03-07
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies, the increased construction costs caused by unpaid users' illegal use of heat, coupled with a lack of real-time monitoring and early warning methods, are due to the problem.
Design a thermal anti-theft cap that integrates a temperature sensor and a limit switch locking valve device. The valve can be remotely controlled and monitored in real time through a drive motor and gear mechanism. Combined with the probe to detect the pipe temperature, it can provide real-time alarms and determine heat theft behavior based on the user's payment status.
It enables real-time monitoring and early warning of users in arrears, avoiding high maintenance costs caused by illegal heating use and ensuring the safety and reliability of the heating system.
Smart Images

Figure CN224550925U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thermal anti-theft technology, and in particular to a thermal anti-theft cap. Background Technology
[0002] In existing technologies, the current method to address illegal heat theft is to disconnect pipes for users with outstanding payments, which is effective. However, the repeated disconnection and reconnection of pipes increases construction costs. There is an urgent need for a locking valve device integrating a temperature sensor and limit switch to provide timely warnings and real-time monitoring, warnings, and handling of users with outstanding payments, thereby completely eliminating illegal heat theft. Summary of the Invention
[0003] The main purpose of this utility model is to provide a heat-resistant anti-theft cap that can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A thermal anti-theft cap includes a valve body with a thermal anti-theft mechanism on top. The thermal anti-theft mechanism includes a ball, a valve stem, a first gear, a drive motor, a second gear, a fixed base, a housing, a temperature sensor, a probe, a limit switch, and a cap. The ball is movably connected to the inside of the valve body via rotating shafts at both ends, and the valve stem is fixedly connected to the top of the rotating shafts. The first gear is fixedly connected to the top of the valve stem. The fixed base is fixedly connected to the top of the valve body, and the housing is fixedly connected to the top surface of the fixed base. The drive motor is fixedly connected to the top surface of the mounting base on the top surface of the fixed base, and the second gear is fixedly connected to the output end of the drive motor and meshes with the first gear. The temperature sensor is fixedly connected to the top surface of the fixed base, and a connecting wire connects the temperature sensor and the probe. The cap is fixedly connected to the connecting neck on the top surface of the housing via an internal thread on its inner wall. The limit switch is also fixedly connected to the top surface of the fixed base.
[0006] Preferably, a set of symmetrical valve seats are fixedly installed on the outer wall of the valve body, and bearings are fixedly installed inside the valve seats. Rotating shafts are fixedly installed at the upper and lower ends of the ball, and the rotating shafts and bearings are inserted and fixedly installed together. The valve stem is fixedly installed at the top end of the upper rotating shaft, and a first gear is fixedly installed at the top end of the valve stem.
[0007] Preferably, the fixed seat is fixedly installed on the top surface of the upper valve seat, and an mounting seat is fixedly installed on the top surface of the fixed seat. A drive motor is fixedly installed on the top surface of the mounting seat, and a second gear is fixedly installed at the bottom of the output end of the drive motor and meshes with the first gear. A control switch is fixedly installed on the right side of the top surface of the fixed seat, and the control switch is electrically connected to the drive motor.
[0008] Preferably, an installation port is fixedly installed on the top left side of the outer wall of the valve body, and a probe is fixedly installed inside the installation port. The temperature sensor is fixedly installed on the top left side of the fixed base, and a connecting wire connects the temperature sensor and the probe.
[0009] Preferably, the housing is fixedly installed on the top surface of the fixing base, and a connecting neck is fixedly installed on the top surface of the housing, with external threads provided on the outer wall of the connecting neck.
[0010] Preferably, the inner wall of the cap is provided with an internal thread that is threaded to the external thread, and a connecting rod is fixedly installed on the inner top surface of the cap. A pressure plate is fixedly installed at the bottom end of the connecting rod, and a limit switch is fixedly installed below the pressure plate and behind the top surface of the fixed base.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] In this utility model, the valve body and the thermal anti-theft mechanism work together. After the user pays the fee, the anti-theft heating platform can be remotely powered to start the drive motor through the control switch. The drive motor will drive the output end to rotate the second gear. The second gear will drive the first gear to rotate under the rotation meshing action. The first gear will drive the valve stem to rotate and then drive the ball to rotate through the rotating shaft to open the valve for normal heating. Alternatively, after the staff unscrews the cap so that the pressure plate no longer triggers the limit switch, they can manually start the drive motor through the control switch to open the valve. Then, they can screw the cap back onto the housing to make the pressure plate trigger the limit switch again, which will then turn off the remote alarm of the anti-theft heating platform.
[0013] If a user opens the cap without paying, preventing the pressure plate from triggering the limit switch, the anti-heat theft platform will issue an alarm. Staff can then check at a designated location to see if the cap has been opened by unauthorized personnel. Furthermore, the unpaid user cannot power the anti-heat theft platform to the drive motor via the control switch, keeping the valve closed and preventing heat theft. Simultaneously, the probe monitors the heating medium inside the pipe. If the temperature exceeds a preset value, it transmits the signal to a temperature sensor via a connecting line. The temperature sensor then relays the signal to the anti-heat theft platform, alerting relevant personnel to investigate the theft. This integrated locking valve device, incorporating a temperature sensor and limit switch, solves the problems of high manpower and resources required to prevent heat theft and the high maintenance costs associated with pipe disconnection. Based on the user's payment history, the temperature status of the locking valve at the user's location, and the limit switch signal status, the system proactively determines whether the user is engaging in heat theft, reporting this to the system in real time, issuing an alarm, and prompting on-site verification. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a cross-sectional view of the overall structure of this utility model;
[0016] Figure 3 This is a schematic diagram showing the overall structure of the locking valve of this utility model.
[0017] Figure 4 This is a structural breakdown diagram of the thermal anti-theft mechanism of this utility model.
[0018] In the diagram: 1. Valve body; 2. Thermal anti-theft mechanism; 3. Valve seat; 4. Bearing; 5. Ball; 6. Rotating shaft; 7. Valve stem; 8. First gear; 9. Mounting base; 10. Drive motor; 11. Second gear; 12. Mounting port; 13. Fixing base; 14. Housing; 15. Connecting neck; 16. External thread; 17. Control switch; 18. Temperature sensor; 19. Probe; 20. Connecting wire; 21. Limit switch; 22. Cap; 23. Internal thread; 24. Connecting rod; 25. Pressure plate. Detailed Implementation
[0019] 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.
[0020] like Figure 1 - Figure 4 As shown, a thermal anti-theft cap includes a valve body 1, with a thermal anti-theft mechanism 2 located above the valve body 1. The thermal anti-theft mechanism 2 includes a ball 5, a valve stem 7, a first gear 8, a drive motor 10, a second gear 11, a fixing seat 13, a housing 14, a temperature sensor 18, a probe 19, a limit switch 21, and a cap 22. The ball 5 is movably connected to the inside of the valve body 1 via rotating shafts 6 at both ends, and the valve stem 7 is fixedly connected to the top of the rotating shaft 6. The first gear 8 is fixedly connected to the top of the valve stem 7, and the fixing seat 13 is fixedly connected to the valve body 1. Above, the housing 14 is fixedly connected to the top surface of the fixed base 13, the drive motor 10 is fixedly connected to the top surface of the mounting base 9 on the top surface of the fixed base 13, and the second gear 11 is fixedly connected to the output end of the drive motor 10 and meshes with the first gear 8. The temperature sensor 18 is fixedly connected to the top surface of the fixed base 13, and a connecting wire 20 is connected between the temperature sensor 18 and the probe 19. The cap 22 is fixedly connected to the connecting neck 15 on the top surface of the housing 14 through the internal thread 23 on the inner wall. The limit switch 21 is also fixedly connected to the top surface of the fixed base 13.
[0021] like Figure 3As shown, a set of symmetrical valve seats 3 are fixedly installed on the outer wall of the valve body 1, and a bearing 4 is fixedly installed inside the valve seat 3. A rotating shaft 6 is fixedly installed at the upper and lower ends of the ball 5, and the rotating shaft 6 and the bearing 4 are inserted and fixedly installed together. The valve stem 7 is fixedly installed at the top of the upper rotating shaft 6, and a first gear 8 is fixedly installed at the top of the valve stem 7. The first gear 8 can drive the valve stem 7 to rotate, so that the valve stem 7 drives the rotating shaft 6 to rotate in the bearing 4 installed in the valve seat 3, and then the ball 5 rotates in the valve body 1 to realize the opening and closing operation of the locking valve.
[0022] like Figure 3 and Figure 4 As shown, the fixed seat 13 is fixedly installed on the top surface of the upper valve seat 3, and the mounting seat 9 is fixedly installed on the top surface of the fixed seat 13. The drive motor 10 is fixedly installed on the top surface of the mounting seat 9, and the second gear 11 is fixedly installed at the bottom of the output end of the drive motor 10 and meshes with the first gear 8. The control switch 17 is fixedly installed on the right side of the top surface of the fixed seat 13, and the control switch 17 is electrically connected to the drive motor 10. When the power is supplied, the drive motor 10 on the top surface of the mounting seat 9 can be turned on by the control switch 17, so that the drive motor 10 drives the second gear 11 to rotate. The second gear 11 drives the first gear 8 to rotate under the rotation meshing action, so as to provide driving force for the execution of the lock valve.
[0023] like Figure 4 As shown, an installation port 12 is fixedly installed on the top left side of the outer wall of the valve body 1, and a probe 19 is fixedly installed inside the installation port 12. A temperature sensor 18 is fixedly installed on the top left side of the fixed base 13, and a connecting line 20 connects the temperature sensor 18 and the probe 19. The temperature inside the pipeline can be detected by the probe 19, and the detection signal is transmitted to the temperature sensor 18 through the connecting line 20. The temperature sensor 18 then transmits the signal to the anti-heat theft platform. When the temperature inside the pipeline exceeds the preset value, an alarm is issued through the anti-heat theft platform to achieve the purpose of real-time monitoring of the pipeline and prevent unpaid users from stealing heat.
[0024] like Figure 4 As shown, the housing 14 is fixedly installed on the top surface of the fixed base 13, and a connecting neck 15 is fixedly installed on the top surface of the housing 14. An external thread 16 is provided on the outer wall of the connecting neck 15. The external thread 16 on the outer wall of the connecting neck 15 is used to cooperate with the installation and fixing of the cap 22.
[0025] like Figure 4As shown, the inner wall of the cap 22 is provided with an internal thread 23 that is threaded to the external thread 16. A connecting rod 24 is fixedly installed on the inner top surface of the cap 22. A pressure plate 25 is fixedly installed at the bottom end of the connecting rod 24. A limit switch 21 is also fixedly installed below the pressure plate 25 and behind the top surface of the fixed base 13. When the cap 22 is rotated to open, the pressure plate 25 at the bottom end of the connecting rod 24 will no longer contact the contact of the limit switch 21. The limit switch 21 changes from the closed state to the open state and transmits the power-on signal to the anti-heat theft platform to alarm, so as to inform relevant personnel to check whether the cap 22 has been illegally opened and heat theft has occurred. This can achieve the purpose of real-time monitoring of the status of the cap 22.
[0026] The specific operating principle of valve body 1 and thermal anti-theft mechanism 2 in combination is as follows:
[0027] After the user has paid, the anti-theft heat platform will supply power normally. Heating can be provided by remote control or by personnel on-site opening of the locking valve. Personnel can manually rotate the cap 22 from the top surface of the housing 14, causing the pressure plate 25 at the bottom of the connecting rod 24 to stop pressing the contacts of the limit switch 21, thus opening the limit switch 21 and triggering an alarm through the anti-theft heat platform. This alarm informs relevant personnel that the locking valve is being opened normally. However, manually opening the control switch 17 supplies power to the drive motor 10 mounted on the top surface of the mounting base 9 through the anti-theft heat platform. The drive motor 10 drives the second gear 11 to rotate, causing the second gear 11 to rotate the first gear 8 through meshing. The first gear 8 will drive the valve stem 7 to rotate, causing the valve stem 7 to drive the rotating shaft 6 installed on the upper and lower end walls of the ball 5 to rotate inside the bearing 4 installed in the valve seat 3. The rotating shaft 6 will drive the ball 5 to rotate and open the locking valve to provide heat to the paid users. Then, the cap 22 will be screwed into the connecting neck 15, so that the internal thread 23 on the inner wall of the cap 22 is threaded together with the external thread 16 on the outer wall of the connecting neck 15. At this time, the pressure plate 25 installed at the bottom of the connecting rod 24 on the top surface inside the cap 22 will press the contact on the limit switch 21 again, so that the limit switch 21 changes from the open state to the closed state, and the anti-heat theft platform will deactivate the alarm. In this way, the opening and closing state of the cap 22 can be monitored in real time through the limit switch 21.
[0028] When an unpaid user attempts to steal heat, the anti-heat theft platform will not provide normal power because the user has not paid. After the user unscrews the cap 22, triggering the limit switch 21, the anti-heat theft platform will issue an alarm, informing relevant personnel that the cap 22 has been opened. This will allow relevant personnel to check the status of the cap 22 at a designated location and confirm whether heat theft has occurred. When the unpaid user presses to start the drive motor 10, the anti-heat theft platform will stop supplying power, preventing the drive motor 10 from being powered on and running. This will prevent the unpaid user from opening the locking valve to steal heat. After receiving the alarm information, relevant personnel can manually close the cap 22 to deactivate the alarm.
[0029] When personnel have not paid the fee and have not opened the cap 22, the probe 19 installed in the installation port 12 can monitor the temperature inside the pipe in real time. Once the temperature inside the pipe is detected to be greater than the preset value, the generated signal will be transmitted to the temperature sensor 18 through the connecting line 20. The temperature sensor 18 will then transmit the signal to the anti-heat theft platform. The anti-heat theft platform will issue an alarm to relevant personnel and check the on-site situation in a timely manner to confirm whether a heat theft problem has occurred. Once the heat theft problem is resolved and the probe 19 detects that the temperature inside the pipe is lower than the preset value, the current alarm can be lifted.
[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, various improvements can be made to it without departing from the scope of the present utility model, and components can be replaced with equivalents or some technical features can be replaced with equivalents. All such improvements within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A thermal anti-theft cap, comprising a valve body (1), characterized in that: A thermal anti-theft mechanism (2) is provided above the valve body (1), and the thermal anti-theft mechanism (2) includes a ball (5), a valve stem (7), a first gear (8), a drive motor (10), a second gear (11), a fixed seat (13), a housing (14), a temperature sensor (18), a probe (19), a limit switch (21), and a cap (22). The ball (5) is movably connected to the inside of the valve body (1) through rotating shafts (6) at both ends, and the valve stem (7) is fixedly connected to the top of the rotating shaft (6). The first gear (8) is fixedly connected to the top of the valve stem (7), and the fixed seat (13) is fixedly connected above the valve body (1). The housing (14) is fixedly connected to the top surface of the fixed base (13). The drive motor (10) is fixedly connected to the top surface of the mounting base (9) on the top surface of the fixed base (13). The second gear (11) is fixedly connected to the output end of the drive motor (10) and meshes with the first gear (8). The temperature sensor (18) is fixedly connected to the top surface of the fixed base (13). A connecting wire (20) is connected between the temperature sensor (18) and the probe (19). The cap (22) is fixedly connected to the connecting neck (15) on the top surface of the housing (14) through the internal thread (23) on the inner wall. The limit switch (21) is also fixedly connected to the top surface of the fixed base (13).
2. The heat-resistant anti-theft cap according to claim 1, characterized in that: A set of symmetrical valve seats (3) are fixedly installed on the outer wall of the valve body (1), and a bearing (4) is fixedly installed inside the valve seat (3). Rotating shafts (6) are fixedly installed at the upper and lower ends of the ball (5), and the rotating shafts (6) and the bearings (4) are inserted and fixedly installed together. The valve stem (7) is fixedly installed at the top of the upper rotating shaft (6), and a first gear (8) is fixedly installed at the top of the valve stem (7).
3. The heat-resistant anti-theft cap according to claim 2, characterized in that: The fixed seat (13) is fixedly installed on the top surface of the upper valve seat (3), and the top surface of the fixed seat (13) is fixedly installed with a mounting seat (9). The top surface of the mounting seat (9) is fixedly installed with a drive motor (10), and the bottom of the output end of the drive motor (10) is fixedly installed with a second gear (11) and meshes with the first gear (8). The right side of the top surface of the fixed seat (13) is fixedly installed with a control switch (17), and the control switch (17) is electrically connected to the drive motor (10).
4. The heat-resistant anti-theft cap according to claim 3, characterized in that: The valve body (1) has an installation port (12) fixedly installed on the top left side of the outer wall, and a probe (19) is fixedly installed inside the installation port (12). The temperature sensor (18) is fixedly installed on the top left side of the fixed base (13), and a connecting line (20) connects the temperature sensor (18) and the probe (19).
5. A heat-resistant anti-theft cap according to claim 4, characterized in that: The housing (14) is fixedly installed on the top surface of the fixed base (13), and a connecting neck (15) is fixedly installed on the top surface of the housing (14). An external thread (16) is provided on the outer wall of the connecting neck (15).
6. A heat-resistant anti-theft cap according to claim 5, characterized in that: The inner wall of the cap (22) is provided with an internal thread (23) that is threaded to the external thread (16), and a connecting rod (24) is fixedly installed on the inner top surface of the cap (22). A pressure plate (25) is fixedly installed at the bottom end of the connecting rod (24), and a limit switch (21) is fixedly installed below the pressure plate (25) and behind the top surface of the fixed seat (13).