Ultrasonic water meter with anti-freezing shell

Abstract

The utility model relates to an ultrasonic water meter with an anti-freezing shell. Comprising a water meter body, and an anti-freezing shell is installed outside the water meter body; the water meter body comprises a water meter pipeline and end flanges located at the two ends of the water meter pipeline, a control box is installed on the top wall of the water meter pipeline, side wing plates are arranged on the two sides of the water meter pipeline, and a bottom wing plate is arranged at the bottom. The anti-freezing shell comprises two opposite anti-freezing shell bodies, the two anti-freezing shell bodies clamp the water meter pipeline between the middle portions and clamp the control box between the upper portions, middle notches allowing the side wing plates to be inserted are formed in the middle portions of the inner walls of the anti-freezing shell bodies, and bottom stepped grooves used for containing the bottom wing plates are formed in the bottoms of the inner walls of the anti-freezing shell bodies. A plurality of electric heating rods are arranged in the anti-freezing shell in the axial direction, an on-shell power connection terminal is installed on the inner wall of the upper portion of the anti-freezing shell, an on-box power connection terminal is installed on the side wall of the control box, and after the anti-freezing shell is installed on the water meter body, the on-box power connection terminal makes contact with the on-shell power connection terminal.

Description

Technical Field

[0001] This utility model belongs to the field of water meter technology, and in particular relates to an ultrasonic water meter with an antifreeze outer shell. Background Technology

[0002] An ultrasonic water meter is a type of water meter that calculates the water flow rate by analyzing the time difference caused by the change in water velocity as an ultrasonic beam propagates upstream and downstream. Its characteristics include low starting velocity, wide rangeability, high measurement accuracy, stable operation, and excellent low-flow-rate detection capability. It solves many problems associated with traditional mechanical water meters and is currently being used more and more widely.

[0003] In low-temperature winter environments, ultrasonic water meters are prone to freezing issues, especially in extremely cold weather where the water inside can freeze. When the water freezes, the meter malfunctions and, in severe cases, cracks. Therefore, it is necessary to develop and design a structure for ultrasonic water meters used in low-temperature conditions to enhance their freeze resistance. Utility Model Content

[0004] The purpose of this invention is to provide an ultrasonic water meter with an antifreeze outer shell, thereby improving the antifreeze capability of the ultrasonic water meter and enabling it to operate normally under low temperature conditions without being damaged by freezing.

[0005] The technical solution adopted by this utility model is as follows: an ultrasonic water meter with an antifreeze shell, comprising a water meter body, with an antifreeze shell installed on the outside of the water meter body; the water meter body includes a water meter pipe and end flanges located at both ends of the water meter pipe, a control box is installed on the top wall of the water meter pipe, side wing plates are provided on both sides of the water meter pipe, and a bottom wing plate is provided at the bottom; the antifreeze shell includes two opposing antifreeze shells, the two antifreeze shells clamping the water meter pipe in the middle and clamping the control box in the upper part, a central slot for inserting the side wing plates is provided in the middle of the inner wall of the antifreeze shell, a bottom stepped groove for accommodating the bottom wing plates is provided at the bottom of the inner wall of the antifreeze shell, a plurality of heating rods arranged in the axial direction are provided inside the antifreeze shell, an on-shell electrical terminal is installed on the upper inner wall of the antifreeze shell, an on-box electrical terminal is installed on the side wall of the control box, and after the antifreeze shell is installed on the water meter body, the on-box electrical terminal contacts the on-shell electrical terminal.

[0006] Preferably, the antifreeze shell is made of foamed plastic and is integrally injection molded. The heating rod is integrally injection molded inside the antifreeze shell and close to the inner wall of the antifreeze shell. The electrical terminals on the shell are integrally injection molded on the upper inner side of the antifreeze shell.

[0007] Preferably, the bottom of the antifreeze housing is provided with multiple horizontally penetrating stepped assembly holes. After the two antifreeze housings are fastened together, they are fixedly connected by assembly bolts located in each stepped assembly hole. A plug is provided inside the stepped assembly hole and outside the assembly bolt.

[0008] Preferably, thermally conductive silicone is provided between the inner wall of the antifreeze housing and the water meter pipe, side wing plate, and bottom wing plate.

[0009] Preferably, the side wing plate and the bottom wing plate extend in the radial direction, and the ends of the side wing plate and the bottom wing plate are fixedly connected to the end flange. When the antifreeze housing is installed on the water meter body, the end of the antifreeze housing abuts against the end flange. A groove for accommodating connecting bolts is also provided at the corresponding position on the inner wall of the end of the antifreeze housing.

[0010] Preferably, the water meter pipe, side wing plate, bottom wing plate, and control box are integral castings. A circuit board is installed inside the control box, and a cover with a display screen is installed on the top of the control box. Cables connected to the circuit board pass through wire holes provided on the cover with the display screen.

[0011] The advantages and positive effects of this utility model are:

[0012] This invention provides an ultrasonic water meter with an antifreeze outer shell. Compared to existing ultrasonic water meters, this invention features an antifreeze outer shell on the outside of the meter body, forming an antifreeze insulation layer that enhances the meter's freeze resistance. Furthermore, this invention incorporates a heating rod inside the antifreeze shell, connected to the control box via terminals on the shell. This allows for temperature control of the heating rod, raising the temperature of the antifreeze shell and consequently the meter body, thus preventing the ultrasonic water meter from dropping below freezing. The insulation and active thermal intervention features of this invention enable the ultrasonic water meter to operate normally under low-temperature conditions and prevent freezing damage. Attached Figure Description

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

[0014] Figure 2 This is a three-dimensional structural diagram of the main body of the water meter in this utility model;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the middle part of this utility model.

[0016] In the picture:

[0017] 1. Water meter pipe; 2. End flange; 3. Connecting bolts; 4. Control box; 5. Electrical terminals on the box; 6. Side wing plate; 7. Bottom wing plate; 8. Antifreeze housing; 9. Assembly bolts; 10. Heating rod; 11. Cover with display screen; 12. Circuit board; 13. Electrical terminals on the housing; 14. Central groove; 15. Stepped assembly hole; 16. Bottom stepped groove; 17. Thermally conductive silicone; 18. Blocking material. Detailed Implementation

[0018] To further understand the invention content, features and effects of this utility model, the following embodiments are provided in detail.

[0019] Please see Figure 1 , Figure 2 and Figure 3 This utility model discloses an ultrasonic water meter with an antifreeze outer shell, comprising a water meter body with an antifreeze outer shell installed on the outside. The water meter body provides ultrasonic flow measurement function, and its operating principle is consistent with existing ultrasonic water meters. The antifreeze outer shell constructs an antifreeze and heat-insulating layer on the outside of the water meter body, and actively intervenes in the heat of the water meter body to prevent the temperature of the water meter body from dropping below the freezing point, thus preventing internal freezing problems and enabling the ultrasonic water meter to operate normally under low-temperature conditions and avoid freezing damage.

[0020] Please see Figure 2 It can be seen that:

[0021] The water meter body includes a water meter pipe 1 and end flanges 2 located at both ends of the water meter pipe 1. A control box 4 is installed on the top wall of the water meter pipe 1. Side flanges 6 are provided on both sides of the water meter pipe 1, and a bottom flange 7 is provided at the bottom. The end flanges 2 are used to connect the ultrasonic water meter to the water pipe. A flange is provided at the end of the water pipe, and the flange is fixedly connected to the end flange 2 of the ultrasonic water meter by connecting bolts 3.

[0022] The two side wing plates 6 are horizontal and circumferentially spaced 180° apart, while the bottom wing plate 7 is vertical. Both the side wing plates 6 and the bottom wing plate 7 extend radially, and their ends are fixedly connected to the end flanges 2. In this embodiment, the water meter pipe 1, the side wing plates 6 and the bottom wing plate 7, and the control box 4 are integral castings. The two end flanges 2 are welded to the ends of the water meter pipe 1, the side wing plates 6 and the bottom wing plate 7. A circuit board 12 is installed inside the control box 4, and a cover 11 with a display screen is installed on the top of the control box 4. Cables connected to the circuit board 12 (including power cables and signal cables) pass through wire holes provided on the cover 11 with the display screen. Therefore, this ultrasonic water meter is a water meter that requires an external power supply, and the applied active thermal intervention is achieved by consuming electrical energy.

[0023] The antifreeze housing includes two opposing antifreeze housings 8, which clamp the water meter pipe 1 between the middle sections and the control box 4 between the upper sections, specifically as follows: Figure 3 As shown, a semi-circular central groove is provided in the middle of the antifreeze housing 8, and the water meter pipe 1 is located between the central grooves of the two antifreeze housings 8. A top groove for accommodating the control box 4 is provided in the middle of the top of the antifreeze housing 8. The control box 4 is located between the top grooves, with the display screen cover 11 exposed, so that the display content can be easily viewed.

[0024] A central slot 14 is provided in the middle of the inner wall of the antifreeze housing 8 for inserting the side wing plate 6. A bottom stepped slot 16 is provided at the bottom of the inner wall of the antifreeze housing 8 to accommodate the bottom wing plate 7. When two antifreeze housings 8 are joined together, the two bottom stepped slots 16 form a complete bottom slot similar to the central slot 14, and the bottom wing plate 7 is located in this bottom slot. The functions of the side wing plate 6 and the central slot 14, and the bottom wing plate 7 and the bottom slot are as follows: First, they enable better bonding between the antifreeze housing and the water meter body. The wing plate can act as a positioning plate, and the slot can act as a positioning groove, providing positioning for the installation of the antifreeze housing onto the water meter body. Second, the side wing plate 6 and the bottom wing plate 7 can act as heat-conducting fins for the water meter pipe 1. When the antifreeze housing applies active thermal intervention to the water meter body, the heat-conducting fins allow heat to be better transferred to the water meter pipe 1.

[0025] Multiple heating rods 10 are arranged axially inside the antifreeze housing 8. A housing-mounted electrical terminal 13 is installed on the upper inner wall of the antifreeze housing 8, and a box-mounted electrical terminal 5 is installed on the side wall of the control box 4. After the antifreeze housing is installed onto the water meter body, the box-mounted electrical terminal 5 contacts the housing-mounted electrical terminal 13, thus connecting the heating rods 10 to the circuit board 12. Specifically, terminal mounting holes are provided on the side wall of the control box 4. The box-mounted electrical terminal 5 is inserted into the terminal mounting holes and glued in place. The box-mounted electrical terminal 5 can be a flexible terminal. The housing-mounted electrical terminal 13 on the antifreeze housing 8 is a protruding terminal. After the antifreeze housing is installed onto the water meter body, the housing-mounted electrical terminal 13 exerts an inward squeezing force on the box-mounted electrical terminal 5, ensuring the reliability of the electrical connection.

[0026] When the antifreeze housing is installed onto the water meter body, the end of the antifreeze housing 8 abuts against the end flange 2. Therefore, the axial length of the antifreeze housing 8 is equal to the length of the side flange 6 and the bottom flange 7. A groove for accommodating the connecting bolt 3 is also provided at a corresponding position on the inner wall of the end of the antifreeze housing 8. After the antifreeze housing is installed, the nuts and bolts of the connecting bolt 3 fall into the aforementioned groove, thus allowing the antifreeze housing and the water meter body to be more stably and tightly integrated.

[0027] In this embodiment, the antifreeze housing 8 is made of foamed plastic and is integrally injection molded. The heating rod 10 is integrally injection molded inside the antifreeze housing 8 and close to the inner wall of the antifreeze housing 8. The electrical terminal 13 on the housing is integrally injection molded on the upper inner side of the antifreeze housing 8, which improves the integrity of the antifreeze housing 8 and its auxiliary components.

[0028] In this embodiment, a plurality of horizontally penetrating stepped assembly holes 15 are provided at the bottom of the antifreeze housing 8. After the two antifreeze housings 8 are fastened together, they are fixedly connected by assembly bolts 9 located in each stepped assembly hole 15. A plug 18 is provided inside the stepped assembly hole 15 and outside the assembly bolt 9 to seal the stepped assembly hole 15.

[0029] In this embodiment, thermally conductive silicone 17 is provided between the inner wall of the antifreeze shell 8 and the water meter pipe 1, the side wing plate 6, and the bottom wing plate 7. The thermally conductive silicone 17 serves to bond the antifreeze shell to the water meter body, and the thermally conductive silicone layer formed at the same time facilitates the transfer of heat generated by the antifreeze shell to the water meter body.

Claims

1. An ultrasonic water meter with an antifreeze outer casing, characterized in that: The system includes a water meter body, with an antifreeze outer casing installed on the outside of the water meter body; the water meter body includes a water meter pipe (1) and end flanges (2) located at both ends of the water meter pipe (1), a control box (4) is installed on the top wall of the water meter pipe (1), side wing plates (6) are provided on both sides of the water meter pipe (1), and a bottom wing plate (7) is provided at the bottom; the antifreeze outer casing includes two opposing antifreeze shells (8), the two antifreeze shells (8) clamp the water meter pipe (1) between the middle and clamp the control box (4) between the upper parts, and the antifreeze shells (8) are located inside the antifreeze shells (8). The middle part of the wall is provided with a central slot (14) for inserting the side wing plate (6). The bottom of the inner wall of the antifreeze housing (8) is provided with a bottom stepped groove (16) for accommodating the bottom wing plate (7). Multiple heating rods (10) are arranged in the axial direction inside the antifreeze housing (8). On the upper inner wall of the antifreeze housing (8) are installed the housing power terminal (13). On the side wall of the control box (4) are installed the box power terminal (5). After the antifreeze housing is installed on the water meter body, the box power terminal (5) contacts the housing power terminal (13).

2. The ultrasonic water meter with an antifreeze outer casing as described in claim 1, characterized in that: The antifreeze housing (8) is made of foamed plastic and is integrally injection molded. The heating rod (10) is integrally injection molded inside the antifreeze housing (8) and close to the inner wall of the antifreeze housing (8). The electrical terminal (13) on the housing is integrally injection molded on the upper inner side of the antifreeze housing (8).

3. The ultrasonic water meter with an antifreeze outer casing as described in claim 2, characterized in that: Multiple horizontally penetrating stepped assembly holes (15) are provided at the bottom of the antifreeze housing (8). After the two antifreeze housings (8) are fastened together, they are fixedly connected by assembly bolts (9) located in each stepped assembly hole (15). A plug (18) is provided inside the stepped assembly hole (15) and outside the assembly bolt (9).

4. The ultrasonic water meter with an antifreeze outer casing as described in claim 3, characterized in that: Thermally conductive silicone (17) is provided between the inner wall of the antifreeze housing (8) and the water meter pipe (1), the side wing plate (6), and the bottom wing plate (7).

5. The ultrasonic water meter with an antifreeze outer casing as described in claim 4, characterized in that: Both the side wing plate (6) and the bottom wing plate (7) extend in the radial direction. The ends of the side wing plate (6) and the bottom wing plate (7) are fixedly connected to the end flange (2). When the antifreeze shell is installed on the water meter body, the end of the antifreeze shell (8) abuts against the end flange (2). A groove for accommodating the connecting bolt (3) is also provided at the corresponding position on the inner wall of the end of the antifreeze shell (8).

6. The ultrasonic water meter with an antifreeze outer casing as described in claim 5, characterized in that: The water meter pipe (1), side wing plate (6), bottom wing plate (7) and control box (4) are integral castings. A circuit board (12) is installed inside the control box (4). A cover with a display screen (11) is installed on the top of the control box (4). The cable connected to the circuit board (12) passes through the wire hole set on the cover with the display screen (11).

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