Alloy radio frequency water meter with anti-freezing function

Abstract

The utility model discloses an alloy radio frequency water meter with anti -freezing function, including heating shell and water meter body, water meter body sets up in heating shell inside, heating shell inside bottom is equipped with heating wire, and heating shell inside is integrated with temperature sensor, heating shell outside surface is equipped with temperature controller, temperature controller is used for controlling the temperature of heating shell inside, heating shell top opening is equipped with the cover, heating shell both sides port is equipped with gland, and the gland is set up on the water supply pipeline, and is sealed between the water supply pipeline, the gland and cover are sealedly connected between heating shell. The utility model discloses a heating shell is set up to the space of water meter body around heating, like this can realize the purpose of anti -freezing to water meter body, and heating position does not contact water meter body, avoids the direct transmission of heat to water meter body and easily causes the internal component damage of water meter.

Description

Technical Field

[0001] This utility model relates to the field of water meter technology, specifically to an alloy radio frequency water meter with antifreeze function. Background Technology

[0002] Water meters are key devices in modern water supply systems used to measure water consumption. Their accuracy and operational stability directly affect the economic interests of water supply companies and users. With the development of intelligent technology, radio frequency (RF) water meters, due to their advantages such as non-contact data reading and remote meter reading, have been widely used in residential communities, commercial buildings, and other scenarios. However, in cold regions or low-temperature winter environments, traditional RF water meters often suffer from freezing and cracking, leading to metering failure, water waste, and even pipeline system malfunctions, causing great inconvenience to maintenance work.

[0003] In existing technologies, the bodies of ordinary radio frequency water meters are mostly made of cast iron or engineering plastics. Although cast iron bodies have high strength, their toughness decreases significantly at low temperatures, making them prone to cracking when the internal water freezes and expands. Plastic bodies, on the other hand, have insufficient low-temperature resistance and are prone to embrittlement and fracture in environments below -10°C. Furthermore, the internal flow channels of traditional water meters are often designed as straight cylindrical structures, which easily create stagnant zones within the meter body. At low temperatures, these zones freeze first and gradually spread, leading to freezing blockage or even bursting of the entire meter body.

[0004] To address the issue of freezing, some products employ external insulation sleeves or electric heat tracing devices. For example, utility model patent CN220490152U discloses an antifreeze water meter, comprising a water meter body and a heating device. The water meter body has a dial, and the heating device is offset from the dial on the water meter body. The heating device includes a heating device housing and a heating wire. The heating device housing is connected to the water meter body, and the heating device housing has a receiving cavity. The heating wire is located within the receiving cavity and is used to heat the water meter body after being energized. This solution provides an antifreeze water meter with good freezing performance by incorporating a heating device on the water meter, and it also prevents the dial from being obstructed.

[0005] The electric heating antifreeze water meter provided by the aforementioned patent can achieve a basic antifreeze effect through heating with an electric heating wire, but the water meter has poor protective performance, resulting in poor impact and corrosion resistance. At the same time, the existing water meter's radio frequency module has insufficient sealing performance, and water vapor can easily enter the module in low-temperature environments, causing electronic components to fail and affecting the stability of data transmission. Utility Model Content

[0006] The purpose of this utility model is to provide an alloy radio frequency water meter with antifreeze function, which aims to improve the poor protection performance of existing antifreeze water meters, resulting in poor impact and corrosion resistance. At the same time, the radio frequency module has insufficient sealing performance, and water vapor can easily enter the module in low-temperature environments, causing electronic components to fail and thus affecting the stability of data transmission.

[0007] This utility model is implemented as follows: An alloy radio frequency water meter with antifreeze function includes a heating shell and a water meter body. The water meter body is disposed inside the heating shell. A heating wire is provided at the bottom of the inner side of the heating shell, and a temperature sensor is integrated inside the heating shell. A temperature controller is provided on the outer side of the heating shell to control the temperature inside the heating shell. A cover is provided at the top opening of the heating shell, and pressure caps are provided at the two side ports of the heating shell. The pressure caps are fitted onto the water supply pipeline and seal with the water supply pipeline. The pressure caps and the cover are sealed to the heating shell.

[0008] Preferably, a sealing ring is provided inside the top opening of the heating housing, and a support is provided along the bottom of the sealing ring on the inner side of the heating housing for supporting the sealing ring; a connecting ring is provided at the edge of the top opening of the heating housing, and the connecting ring is provided with multiple connecting holes.

[0009] Preferably, the heating shell is provided with a first guide joint and a second guide joint on both sides, and each of the first guide joint and the second guide joint is provided with a mounting joint at its end. The mounting joint is provided with a sealing gasket on its end face, and both the mounting joint and the sealing gasket are provided with mounting holes on both sides.

[0010] Preferably, the bottom inner side of the heating housing is provided with heat dissipation holes for the heat generated by the heating wire to dissipate into the inner cavity of the heating housing; the side of the heating housing is provided with a connecting wire, and the end of the connecting wire is provided with a power plug for energizing the heating housing.

[0011] Preferably, the temperature controller has a display screen on the front and a setting button below the display screen for setting the temperature inside the heating shell.

[0012] Preferably, the water meter body is provided with a flow guide pipe, and the inner sides of both ends of the flow guide pipe are provided with transition parts. After the water meter body is connected to the water supply pipeline, it is suspended inside the heating shell.

[0013] Preferably, the bottom of the cover is provided with a plug ring, which will compress the sealing ring when inserted into the inner side of the heating shell, thereby achieving a seal between the cover and the heating shell; the cover is provided with an observation window in the middle, and the cover is provided with multiple bolt holes on the edge, and the cover and the heating shell are connected by bolts.

[0014] Preferably, the pressure cap has a through hole at the position of the mounting hole, and the pressure cap has a sleeve hole in the middle for fitting onto the water supply pipeline.

[0015] Preferably, it also includes a transfer pipe, and a sealed bearing is provided inside the central sleeve hole of the pressure cap. The sealed bearing is interference-fitted with the transfer pipe, and the end of the transfer pipe facing the inner side of the heating shell is connected to the water meter body.

[0016] Preferably, the end of the adapter pipe facing the heating shell is provided with a threaded adapter, and the side of the adapter pipe is provided with a hexagon, and the other end of the adapter pipe is provided with a flange, and the edge of the flange is provided with multiple flange holes.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model heats the space surrounding the water meter body by setting a heating shell, thus preventing the water meter body from freezing. The heated part does not contact the water meter body, avoiding direct heat transfer that could damage internal components. Simultaneously, the heating shell integrates a temperature sensor and a temperature controller, allowing for constant temperature heating inside the shell. A cover is provided at the top opening of the heating shell body, and pressure caps are provided at both ends. These pressure caps can be fitted onto the water supply pipeline, and the pressure caps and cover can be tightly sealed to the heating shell, preventing external moisture from entering the water meter body. This effectively protects the water meter and significantly improves its impact resistance and corrosion resistance.

[0018] 2. This utility model connects the water meter body by rotating the adapter pipe in the middle of the end cap. The end of the adapter pipe facing the heating protective shell is connected to the water meter body, which facilitates the connection of the entire water meter to the water supply pipeline. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the heating shell of this utility model; Figure 3 This is a schematic diagram of the structure of the water meter body of this utility model; Figure 4 This is a schematic diagram of the structure of the cap of this utility model; Figure 5 This is a schematic diagram of the structure of the pressure cap of this utility model; Figure 6 This is a schematic diagram of the transfer tube of this utility model.

[0020] In the diagram: 1. Heating shell; 11. Sealing ring; 12. Connecting wire; 13. Connecting plug; 14. Connecting ring; 141. Connecting hole; 15. First guide joint; 16. Second guide joint; 161. Mounting joint; 162. Sealing gasket; 163. Mounting hole; 17. Heat dissipation hole; 18. Temperature controller; 181. Display screen; 182. Setting button; 2. Water meter body; 21. Flow guide pipe; 22. Adapter; 3. Cover; 31. Bolt hole; 32. Insert ring; 33. Observation window; 4. Pressure cap; 41. Perforation; 42. Sealed bearing; 43. Sleeve hole; 5. Adapter pipe; 51. Threaded adapter; 52. Hexagon; 53. Flange; 54. Flange hole. Detailed Implementation

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details: Example 1 like Figure 1As shown, an alloy radio frequency water meter with antifreeze function includes a heating shell 1 and a water meter body 2. The water meter body 2 is located inside the heating shell 1, thus providing good protection for the water meter body 2 and preventing damage from external impacts. A heating wire is provided at the bottom of the inner side of the heating shell 1, which is easily energized to generate heat, thereby raising the internal temperature of the heating shell 1 and achieving the antifreeze purpose. A temperature sensor is integrated inside the heating shell 1 for easy detection of the internal temperature. A temperature controller 18 is provided on the outer side of the heating shell 1 to control the internal temperature of the heating shell 1, allowing for easy setting of the internal temperature and ensuring a constant temperature for effective antifreeze. A cover 3 is provided at the top opening of the heating shell 1, which facilitates sealing the top opening of the heating shell 1, allowing for easy disassembly and assembly of the water meter body 2 while providing comprehensive protection for the water meter body 2. The heating housing 1 has pressure caps 4 at both ends. The pressure caps 4 are fitted onto the water supply pipe and are sealed to the water supply pipe. The pressure caps 4 and the cover 3 are sealed to the heating housing 1. This structure can keep the cavity inside the heating housing 1 in an effective sealed state, preventing external water vapor from entering the water meter body 2. The temperature controller 18, in conjunction with the sensor and heating wire, operates on the following principle for temperature control: A PT100 platinum resistance temperature sensor (measurement accuracy ±0.1℃) is selected and installed inside the heating shell 1. It collects the analog temperature signal inside the heating shell 1 in real time, converts it into a digital signal via a signal converter, and transmits it to the temperature controller 18. The temperature controller 18 has a built-in microprocessor and PID control algorithm. A target constant temperature value is preset (which can be set as needed within the range of 1℃ to 40℃). The measured temperature is compared with the set value in real time, and the deviation is calculated before automatically outputting a pulse width modulation (PWM) control signal. The heating wire is configured at the actuator. When the measured temperature is lower than the set value, the controller activates the heating module to heat the wire, causing the temperature to rise uniformly. The greater the deviation, the higher the output power. Heating stops when the measured temperature is higher than the set value. When the temperature approaches the set value, the PID algorithm automatically reduces the control input to avoid overshoot and fluctuations. Simultaneously, the heating shell 1 is encapsulated with a polyurethane insulation layer to reduce environmental temperature interference. Combined with the over-temperature alarm and power-off protection functions of the temperature controller 18, this ensures that the cavity temperature remains stable within an accuracy range of ±0.3℃ for a long period.

[0023] like Figure 2As shown, a sealing ring 11 is provided inside the opening at the top of the heating housing 1. A support platform is provided along the bottom of the sealing ring 11 on the inner side of the heating housing 1 to support the sealing ring 11. The sealing ring 11 is used to achieve a seal between the cover 3 and the heating housing 1. A connecting ring 14 is provided at the edge of the opening at the top of the heating housing 1. The connecting ring 14 has multiple connecting holes 141. The cooperation between the connecting ring 14 and the connecting holes 141 facilitates the connection between the heating housing 1 and the cover 3. A first guide joint 15 and a second guide joint 16 are provided on both sides of the heating housing 1. The first guide joint 15 and the second guide joint 16 facilitate the water supply pipe to pass through the inner side of the heating housing 1 and connect to the water meter body 2. The ends of the first guide joint 15 and the second guide joint 16 are provided with installation joints 161. The installation joints 161 facilitate the installation of the pressure cover 4 and ensure the stability of the pressure cover 4. A sealing gasket 162 is provided on the end face of the installation joint 161. The sealing gasket 162 facilitates the sealing between the installation joint 161 and the pressure cover 4. Both the mounting connector 161 and the sealing gasket 162 have mounting holes 163 on both sides, which facilitate the connection between the mounting connector 161 and the pressure cap 4. A heat dissipation hole 17 is provided at the bottom inner side of the heating shell 1 to dissipate the heat generated by the heating wire into the inner cavity of the heating shell 1. A connecting wire 12 is provided on the side of the heating shell 1, and a power plug 13 is provided at the end of the connecting wire 12 for powering the heating shell 1, facilitating the operation of the entire device. A display screen 181 is provided on the front of the temperature controller 18 for displaying the set temperature. A setting button 182 is provided below the display screen 181 on the temperature controller 18 for setting the internal temperature of the heating shell 1.

[0024] like Figure 3 As shown, the water meter body 2 is provided with a flow guide pipe 21, and the inner sides of both ends of the flow guide pipe 21 are provided with adapter parts 22. After the water meter body 2 is connected to the water supply pipeline, it is suspended inside the heating shell 1. The flow guide pipe 21 is for the water to flow through and for the water meter to measure the flow rate. The adapter parts 22 are used to connect the flow guide pipe 21 to the water supply pipeline or other components.

[0025] like Figure 4 As shown, the bottom of the cover 3 is provided with a retaining ring 32. When the retaining ring 32 is inserted into the inner side of the heating housing 1, it will compress the sealing ring 11, thereby achieving a seal between the cover 3 and the heating housing 1. The middle of the cover 3 is provided with an observation window 33, which is convenient for observing the water meter data. In addition, the edge of the cover 3 is provided with multiple bolt holes 31. The cover 3 and the heating housing 1 are connected by bolts. The bolt holes 31 facilitate the bolts to pass through, making it easy to connect the cover 3 and the heating housing 1 with bolts.

[0026] like Figure 5 As shown, the pressure cap 4 has a through hole 41 at the position aligned with the mounting hole 163, which facilitates the connection between the pressure cap 4 and the mounting connector 161. The pressure cap 4 also has a sleeve hole 43 in the middle for fitting onto the water supply pipe.

[0027] Example 2 like Figure 1 As shown, an alloy radio frequency water meter with antifreeze function includes a heating shell 1 and a water meter body 2. The water meter body 2 is located inside the heating shell 1, thus providing good protection for the water meter body 2 and preventing damage from external impacts. A heating wire is provided at the bottom of the inner side of the heating shell 1, which is easily energized to generate heat, thereby raising the internal temperature of the heating shell 1 and achieving the antifreeze purpose. A temperature sensor is integrated inside the heating shell 1 for easy detection of the internal temperature. A temperature controller 18 is provided on the outer side of the heating shell 1 to control the internal temperature of the heating shell 1, allowing for easy setting of the internal temperature and ensuring a constant temperature for effective antifreeze. A cover 3 is provided at the top opening of the heating shell 1, which facilitates sealing the top opening of the heating shell 1, allowing for easy disassembly and assembly of the water meter body 2 while providing comprehensive protection for the water meter body 2. The heating housing 1 has pressure caps 4 at both ends. The pressure caps 4 are fitted onto the water supply pipe and are sealed to the water supply pipe. The pressure caps 4 and the cover 3 are sealed to the heating housing 1. This structure can keep the cavity inside the heating housing 1 in an effective sealed state, preventing external water vapor from entering the water meter body 2. The temperature controller 18, in conjunction with the sensor and heating wire, operates on the following principle for temperature control: A PT100 platinum resistance temperature sensor (measurement accuracy ±0.1℃) is selected and installed inside the heating shell 1. It collects the analog temperature signal inside the heating shell 1 in real time, converts it into a digital signal via a signal converter, and transmits it to the temperature controller 18. The temperature controller 18 has a built-in microprocessor and PID control algorithm. A target constant temperature value is preset (which can be set as needed within the range of 1℃ to 40℃). The measured temperature is compared with the set value in real time, and the deviation is calculated before automatically outputting a pulse width modulation (PWM) control signal. The heating wire is configured at the actuator. When the measured temperature is lower than the set value, the controller activates the heating module to heat the wire, causing the temperature to rise uniformly. The greater the deviation, the higher the output power. Heating stops when the measured temperature is higher than the set value. When the temperature approaches the set value, the PID algorithm automatically reduces the control input to avoid overshoot and fluctuations. Simultaneously, the heating shell 1 is encapsulated with a polyurethane insulation layer to reduce environmental temperature interference. Combined with the over-temperature alarm and power-off protection functions of the temperature controller 18, this ensures that the cavity temperature remains stable within an accuracy range of ±0.3℃ for a long period.

[0028] like Figure 2As shown, a sealing ring 11 is provided inside the opening at the top of the heating housing 1. A support platform is provided along the bottom of the sealing ring 11 on the inner side of the heating housing 1 to support the sealing ring 11. The sealing ring 11 is used to achieve a seal between the cover 3 and the heating housing 1. A connecting ring 14 is provided at the edge of the opening at the top of the heating housing 1. The connecting ring 14 has multiple connecting holes 141. The cooperation between the connecting ring 14 and the connecting holes 141 facilitates the connection between the heating housing 1 and the cover 3. A first guide joint 15 and a second guide joint 16 are provided on both sides of the heating housing 1. The first guide joint 15 and the second guide joint 16 facilitate the water supply pipe to pass through the inner side of the heating housing 1 and connect to the water meter body 2. The ends of the first guide joint 15 and the second guide joint 16 are provided with installation joints 161. The installation joints 161 facilitate the installation of the pressure cover 4 and ensure the stability of the pressure cover 4. A sealing gasket 162 is provided on the end face of the installation joint 161. The sealing gasket 162 facilitates the sealing between the installation joint 161 and the pressure cover 4. Both the mounting connector 161 and the sealing gasket 162 have mounting holes 163 on both sides, which facilitate the connection between the mounting connector 161 and the pressure cap 4. A heat dissipation hole 17 is provided at the bottom inner side of the heating shell 1 to dissipate the heat generated by the heating wire into the inner cavity of the heating shell 1. A connecting wire 12 is provided on the side of the heating shell 1, and a power plug 13 is provided at the end of the connecting wire 12 for powering the heating shell 1, facilitating the operation of the entire device. A display screen 181 is provided on the front of the temperature controller 18 for displaying the set temperature. A setting button 182 is provided below the display screen 181 on the temperature controller 18 for setting the internal temperature of the heating shell 1.

[0029] like Figure 3 As shown, the water meter body 2 is provided with a flow guide pipe 21, and the inner sides of both ends of the flow guide pipe 21 are provided with adapter parts 22. After the water meter body 2 is connected to the water supply pipeline, it is suspended inside the heating shell 1. The flow guide pipe 21 is for the water to flow through and for the water meter to measure the flow rate. The adapter parts 22 are used to connect the flow guide pipe 21 to the water supply pipeline or other components.

[0030] like Figure 4 As shown, the bottom of the cover 3 is provided with a retaining ring 32. When the retaining ring 32 is inserted into the inner side of the heating housing 1, it will compress the sealing ring 11, thereby achieving a seal between the cover 3 and the heating housing 1. The middle of the cover 3 is provided with an observation window 33, which is convenient for observing the water meter data. In addition, the edge of the cover 3 is provided with multiple bolt holes 31. The cover 3 and the heating housing 1 are connected by bolts. The bolt holes 31 facilitate the bolts to pass through, making it easy to connect the cover 3 and the heating housing 1 with bolts.

[0031] like Figure 5 As shown, the pressure cap 4 has a through hole 41 at the position aligned with the mounting hole 163, which facilitates the connection between the pressure cap 4 and the mounting connector 161. The pressure cap 4 also has a sleeve hole 43 in the middle for fitting onto the water supply pipe.

[0032] like Figure 1 and Figure 5 As shown, it also includes a transfer pipe 5. A sealed bearing 42 is provided inside the sleeve hole 43 in the middle of the pressure cover 4. The sealed bearing 42 is interference-fitted with the transfer pipe 5. One end of the transfer pipe 5 facing the inner side of the heating shell 1 is connected to the water meter body 2. This structure facilitates connection with the water meter with the cooperation of the transfer pipe 5, thus avoiding the need for the water supply pipeline to pass through the pressure cover 4 and be connected to the water meter body 2. In actual use, the assembled water meter is directly connected to the water supply pipeline through the transfer pipe 5.

[0033] like Figure 6 As shown, the end of the adapter pipe 5 facing the heating housing 1 is provided with a threaded adapter 51, which facilitates the connection of the adapter pipe 5 to the guide pipe 21. The side of the adapter pipe 5 is provided with a hexagonal body 52, which facilitates the rotation of the adapter pipe 5 using a wrench. The other end of the adapter pipe 5 is provided with a flange 53, and the edge of the flange 53 has multiple flange holes 54. The flange 53, in conjunction with the flange holes 54, facilitates the connection of the adapter pipe 5 to the water supply pipeline.

[0034] Working principle: The water meter body 2 is set inside the heating shell 1 with a polyurethane insulation layer. The heating shell 1 forms an effective seal through the structure of the cover 3, the pressure cover 4, the sealing gasket 162 and the sealing bearing 42 to prevent external water vapor from entering. At the same time, a heating wire is provided at the bottom of the inner side of the heating shell 1, and a PT100 platinum resistance temperature sensor (measurement accuracy ±0.1℃) is integrated inside. The outer side is equipped with a temperature controller 18 with a built-in microprocessor and PID adjustment algorithm. During operation, the temperature sensor collects the analog temperature signal inside the heating shell 1 in real time. After being converted into a digital signal by the signal converter, it is transmitted to the temperature controller 18. The controller compares the measured temperature with the preset target constant temperature value in real time and regulates the operation of the heating wire through the pulse width modulation (PWM) control signal. When the measured temperature is lower than the set value, the heating wire starts heating, and the larger the deviation, the higher the output power. When the temperature approaches the set value, the PID algorithm automatically reduces the control quantity to avoid overshoot and fluctuation. When the measured temperature is higher than the set value, heating stops. Combined with the polyurethane insulation layer of the heating shell 1 to reduce the interference of ambient temperature, and the over-temperature alarm and power failure protection functions of the temperature controller 18, the cavity temperature is ensured to remain stable within the accuracy range of ±0.3℃ for a long time, achieving antifreeze protection. At the same time, the heating shell 1 is conveniently connected to the water supply pipeline through components such as the adapter pipe 5, threaded adapter 51, and flange 53. The water meter body 2 measures the flow rate normally through the guide pipe 21. The overall structure ensures the antifreeze effect without affecting the core function of the water meter.

[0035] In summary, compared with the prior art, this application heats the space around the water meter body 2 by setting a heating shell 1; this can achieve the purpose of preventing the water meter body 2 from freezing; and the heating part does not contact the water meter body 2, avoiding direct heat transfer to the water meter body 2, which could easily cause damage to the internal components of the water meter; at the same time, the heating shell 1 integrates a temperature sensor and a temperature controller 18, which can be used to achieve constant temperature heating inside the heating shell 1; a cover 3 is set at the top opening of the heating shell 1, and pressure caps 4 are set at both ends of the heating shell 1. The pressure caps 4 can be fitted onto the water supply pipeline, and the pressure caps 4 and the cover 3 can be pressed tightly and sealed with the heating shell 1 to prevent external moisture from entering the water meter body 2, while also protecting the water meter well and greatly improving the water meter's impact resistance and corrosion resistance.

[0036] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An alloy radio frequency water meter with antifreeze function, characterized in that, The device includes a heating shell (1) and a water meter body (2). The water meter body (2) is located inside the heating shell (1). A heating wire is provided at the bottom of the inner side of the heating shell (1), and a temperature sensor is integrated inside the heating shell (1). A temperature controller (18) is provided on the outer side of the heating shell (1). The temperature controller (18) is used to control the temperature inside the heating shell (1). A cover (3) is provided at the top opening of the heating shell (1), and a pressure cover (4) is provided at the two side ports of the heating shell (1). The pressure cover (4) is fitted onto the water supply pipeline and is sealed to the water supply pipeline. The pressure cover (4) and the cover (3) are sealed to the heating shell (1).

2. The alloy radio frequency water meter with antifreeze function according to claim 1, characterized in that, The heating shell (1) has a sealing ring (11) inside the top opening. The heating shell (1) has a support platform along the bottom of the sealing ring (11) inside the bottom, which is used to support the sealing ring (11). The heating shell (1) has a connecting ring (14) at the top opening edge, and the connecting ring (14) has multiple connecting holes (141).

3. The alloy radio frequency water meter with antifreeze function according to claim 1, characterized in that, The heating shell (1) is provided with a first guide joint (15) and a second guide joint (16) on both sides respectively. The ends of the first guide joint (15) and the second guide joint (16) are provided with mounting joints (161). The end face of the mounting joint (161) is provided with a sealing gasket (162), and the mounting joint (161) and the sealing gasket (162) are provided with mounting holes (163) on both sides.

4. The alloy radio frequency water meter with antifreeze function according to claim 1, characterized in that, The heating shell (1) has a heat dissipation hole (17) at the bottom of its inner side, which is used to dissipate the heat generated by the heating wire into the inner cavity of the heating shell (1); the heating shell (1) has a connecting wire (12) on its side, and the end of the connecting wire (12) has a power plug (13) for powering the heating shell (1).

5. The alloy radio frequency water meter with antifreeze function according to claim 4, characterized in that, The temperature controller (18) has a display screen (181) on the front and a setting button (182) below the display screen (181) for setting the temperature inside the heating shell (1) through the temperature controller (18).

6. The alloy radio frequency water meter with antifreeze function according to claim 1, characterized in that, The water meter body (2) is provided with a guide pipe (21), and the inner sides of both ends of the guide pipe (21) are provided with a transition part (22). After the water meter body (2) is connected to the water supply pipeline, it is suspended inside the heating shell (1).

7. The alloy radio frequency water meter with antifreeze function according to claim 2, characterized in that, The bottom of the cover (3) is provided with a plug ring (32). When the plug ring (32) is inserted into the inner side of the heating shell (1), it will squeeze the sealing ring (11) to achieve a seal between the cover (3) and the heating shell (1). The cover (3) is provided with an observation window (33) in the middle and multiple bolt holes (31) are provided on the edge of the cover (3). The cover (3) and the heating shell (1) are connected by bolts.

8. The alloy radio frequency water meter with antifreeze function according to claim 3, characterized in that, The pressure cap (4) has a through hole (41) aligned with the mounting hole (163), and the pressure cap (4) has a sleeve hole (43) in the middle for fitting onto the water supply pipeline.

9. The alloy radio frequency water meter with antifreeze function according to claim 8, characterized in that, It also includes a transfer pipe (5), and a sealed bearing (42) is provided inside the central sleeve hole (43) of the pressure cap (4). The sealed bearing (42) is interference-fitted with the transfer pipe (5), and one end of the transfer pipe (5) facing the inner side of the heating shell (1) is connected to the water meter body (2).

10. An alloy radio frequency water meter with antifreeze function according to claim 9, characterized in that, The adapter pipe (5) has a threaded adapter (51) at one end facing the heating shell (1), and a hexagonal body (52) on the side of the adapter pipe (5). The other end of the adapter pipe (5) has a flange (53), and the flange (53) has multiple flange holes (54) on its edge.

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