Temperature sensor for water meter with high heat retaining property

Abstract

The utility model relates to the technical field of water meter temperature sensing, and provides a temperature sensor for a water meter with high heat preservation performance, which comprises a pipeline, the outer surface of the pipeline is movably connected with a shell, and the outer surface of the shell is provided with a clamping structure; the clamping structure comprises an inner groove formed in the outer surface of the shell, a PCB and an inner support are arranged in the inner groove, the inner side of the shell is fixedly connected with a PCB corner protruding column, the position, close to the end, of the inner side of the shell is fixedly connected with a PCB end protruding column, the two ends of the PCB are provided with transducer welding points, the outer surface of the PCB is provided with PCB positioning holes, and the outer surface of the PCB is fixedly connected with a protruding assembly. The lower end of the PCB is fixedly connected with an embedded temperature measuring probe, and a positioning pin is fixedly connected to the position, corresponding to the embedded temperature measuring probe, of the inner side of the shell. By means of the technical scheme, the problems that due to the fact that the embedded temperature measuring probe portion of an existing temperature sensor for the water meter directly extends into the pipeline portion, temperature measurement is not accurate, sensitivity is low, heat around the measuring sensor is lost, and measuring errors are large are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water meter temperature sensing, and in particular to a temperature sensor for a water meter with strong heat preservation performance. Background Art

[0002] With the development of science and technology, water meters are becoming more and more intelligent. Water meters usually have more functions. Water meters are usually used to measure water consumption. The temperature of water flow can be monitored by adding temperature sensors.

[0003] After searching, the authorization announcement number CN215064693U is a temperature sensor assembly structure for a stainless steel ultrasonic water meter, which includes an ultrasonic water meter case, a connection assembly and a temperature sensor. The connection assembly includes a left strap, a right strap and a receiving cavity arranged between the left strap and the right strap. Both ends of the left strap and the right strap are provided with a clamping piece. The bottom of the receiving cavity is provided with an arc opening, and the top of the receiving cavity is provided with a receiving cover. The arc opening is arranged close to the ultrasonic water meter case. The temperature sensor is provided in the receiving cavity and is filled with thermal conductive silicone grease. The utility model reduces the welding process, which is conducive to improving production efficiency and reducing production costs.

[0004] However, the above-mentioned existing water meter temperature sensor has an embedded temperature measuring probe that directly extends into the interior of the pipe part, which will cause inaccurate temperature measurement and low sensitivity, heat loss around the measuring sensor, and large measurement errors. Therefore, we propose a water meter temperature sensor with strong thermal insulation. Utility Model Content

[0005] The utility model provides a temperature sensor for a water meter with strong heat preservation, which solves the problems of the existing temperature sensor for a water meter mentioned in the background technology that the embedded temperature measuring probe directly extends into the interior of the pipe part, which may cause inaccurate temperature measurement, low sensitivity, heat loss around the measuring sensor, and large measurement errors.

[0006] The technical solution of the utility model is as follows:

[0007] A temperature sensor for a water meter with strong heat preservation performance, comprising a pipe, a shell is movably connected to the outer surface of the pipe, and a clamping structure is arranged on the outer surface of the shell;

[0008] The snap-fit ​​structure includes an inner groove formed on the outer surface of the shell, a PCB and an inner bracket are respectively arranged inside the inner groove, a PCB corner boss is fixedly connected to the inner side of the shell, a PCB end boss is fixedly connected to the inner side of the shell near the end, transducer welding points are formed at both ends of the PCB, a PCB positioning hole is formed on the outer surface of the PCB, a protrusion component is fixedly connected to the outer surface of the PCB, an embedded temperature measuring probe is fixedly connected to the lower end of the PCB, and a positioning pin is fixedly connected to the inner side of the shell corresponding to the embedded temperature measuring probe.

[0009] As a further technical solution of the utility model, the inner groove is a rectangular inwardly concave groove structure, and the four corners of the rectangle are arc-shaped and inwardly concave to form an arc-shaped structure.

[0010] As a further technical solution of the utility model, the PCB corner boss matches the PCB positioning hole, the transducer welding point is an inwardly recessed notch structure, and the PCB end boss matches the transducer welding point.

[0011] As a further technical solution of the utility model, the shape of the inner bracket is the same as that of the PCB, and the volume of the inner bracket is larger than that of the PCB, and the PCB is located at the inner center of the inner bracket.

[0012] As a further technical solution of the utility model, the inner bracket matches the inner groove, and the thickness of the inner bracket is smaller than the depth of the inner groove.

[0013] As a further technical solution of the utility model, a communication line is connected to the outer surface of the PCB, the PCB is embedded in the inner bracket, and the communication line runs from the inside of the inner bracket to the outside of the inner bracket.

[0014] As a further technical solution of the utility model, the outer surface of the inner bracket is provided with a hole matching the protrusion assembly, the embedded temperature probe is located at the center of the lower end of the PCB, and the embedded temperature probe passes through the inner bracket to the outside of its lower end.

[0015] As a further technical solution of the utility model, the embedded temperature probe is made of brass material, the connection between the PCB and the embedded temperature probe is coated with thermal grease, the embedded temperature probe detects the water temperature inside the pipe through ultrasonic technology, and the positioning pin is made of plastic material.

[0016] The working principle and beneficial effects of the utility model are:

[0017] 1. In the utility model, the embedded temperature probe and the inner bracket are pinned together through the effect of the snap-fit ​​structure, so that the integrity is better. At the same time, the head of the embedded temperature probe is fixed to the hole positioned on the pipe by pressing down the inner bracket, which makes the assembly more convenient. The embedded temperature probe is made of brass material, and the joint between the PCB and the embedded temperature probe is coated with thermal conductive silicone grease, which can enhance the mechanical stress there. The positioning pin made of plastic material has good thermal insulation performance, which reduces the heat dissipation of the flowing water inside the pipe, thereby making the temperature measurement result more accurate and the embedded temperature probe more sensitive. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a partial exploded view of the utility model;

[0021] Figure 3 For this utility model Figure 1 A schematic diagram of a local structure cut away from another perspective;

[0022] Figure 4 For this utility model Figure 3 Schematic diagram of the split local structure.

[0023] In the figure: 1. pipeline; 2. shell; 3. snap-fit ​​structure; 30. inner bracket; 31. inner groove; 32. PCB; 33. PCB corner boss; 34. PCB end boss; 35. transducer welding point; 36. PCB positioning hole; 37. protrusion component; 38. embedded temperature probe; 39. positioning pin; 4. communication line. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1

[0026] like Figure 1 to Figure 4 As shown, this embodiment provides a temperature sensor for a water meter with strong heat preservation, comprising a pipe 1, a shell 2 is movably connected to the outer surface of the pipe 1, and a clamping structure 3 is provided on the outer surface of the shell 2;

[0027] The snap-fitting structure 3 includes an inner groove 31 opened on the outer surface of the shell 2, and a PCB 32 and an inner bracket 30 are respectively arranged inside the inner groove 31. A PCB corner boss 33 is fixedly connected to the inner side of the shell 2, and a PCB end boss 34 is fixedly connected to the inner side of the shell 2 near the end. Transducer welding points 35 are opened at both ends of the PCB 32, and a PCB positioning hole 36 is opened on the outer surface of the PCB 32. A protrusion component 37 is fixedly connected to the outer surface of the PCB 32, and an embedded temperature probe 38 is fixedly connected to the lower end of the PCB 32. A positioning pin 39 is fixedly connected to the inner side of the shell 2 corresponding to the embedded temperature probe 38.

[0028] The inner groove 31 is a rectangular groove structure that is concave inwards, and the four corners of the rectangle are arc-shaped and concave inwards to form an arc-shaped structure.

[0029] The PCB corner boss 33 matches the PCB positioning hole 36 , the transducer soldering point 35 is an inwardly recessed notch structure, and the PCB end boss 34 matches the transducer soldering point 35 .

[0030] The shape of the inner bracket 30 is the same as that of the PCB 32 , and the volume of the inner bracket 30 is larger than that of the PCB 32 . The PCB 32 is located at the inner center of the inner bracket 30 .

[0031] The inner bracket 30 matches the inner groove 31 , and the thickness of the inner bracket 30 is smaller than the depth of the inner groove 31 .

[0032] The outer surface of the PCB 32 is connected with a communication line 4 . The PCB 32 is embedded in the inner bracket 30 , and the communication line 4 passes through from the inside of the inner bracket 30 to the outside of the inner bracket 30 .

[0033] The outer surface of the inner bracket 30 is provided with a hole matching the protrusion component 37 , and the embedded temperature probe 38 is located at the center of the lower end of the PCB 32 , and the embedded temperature probe 38 passes through the inner bracket 30 to the outside of the lower end thereof.

[0034] The embedded temperature probe 38 is made of brass material. The joint between PCB 32 and the embedded temperature probe 38 is coated with thermal conductive silicone grease. The embedded temperature probe 38 detects the water temperature inside the pipeline 1 through ultrasonic technology. The positioning pin 39 is made of plastic material.

[0035] In this embodiment, the embedded temperature probe 38 is pinned together with the inner bracket 30 to improve the integrity. At the same time, the inner bracket 30 is used to press down to fix the head of the embedded temperature probe 38 to the positioning hole on the pipe 1, which is more convenient for assembly. The embedded temperature probe 38 is made of brass material, and the joint between PCB32 and the embedded temperature probe 38 is coated with thermal conductive silicone grease to enhance the mechanical stress there. The positioning pin 39 made of plastic has good thermal insulation performance, which reduces the heat dissipation of the flowing water inside the pipe 1, thereby making the temperature measurement result more accurate. The embedded temperature probe 38 has a higher sensitivity and has the advantages of easy processing and easy installation and disassembly. It is more convenient and stable than the traditional threaded fixing method.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A temperature sensor for a water meter with strong heat preservation, characterized in that: It comprises a pipeline (1), the outer surface of the pipeline (1) is movably connected to a shell (2), and the outer surface of the shell (2) is provided with a snap-fit ​​structure (3); The snap-fit ​​structure (3) comprises an inner groove (31) formed on the outer surface of the shell (2); a PCB (32) and an inner bracket (30) are respectively arranged inside the inner groove (31); a PCB corner boss (33) is fixedly connected to the inner side of the shell (2); a PCB end boss (34) is fixedly connected to the inner side of the shell (2) near the end; transducer welding points (35) are formed at both ends of the PCB (32); a PCB positioning hole (36) is formed on the outer surface of the PCB (32); a protrusion assembly (37) is fixedly connected to the outer surface of the PCB (32); an embedded temperature measuring probe (38) is fixedly connected to the lower end of the PCB (32); and a positioning pin (39) is fixedly connected to the inner side of the shell (2) corresponding to the embedded temperature measuring probe (38).

2. The water meter temperature sensor with strong heat preservation performance according to claim 1, characterized in that: The inner groove (31) is a rectangular inwardly concave groove structure, and the four corners of the rectangle are arc-shaped and inwardly concave to form an arc-shaped structure.

3. The temperature sensor for water meter with strong heat preservation performance according to claim 2, characterized in that: The PCB corner boss (33) matches the PCB positioning hole (36), the transducer welding point (35) is an inwardly recessed notch structure, and the PCB end boss (34) matches the transducer welding point (35).

4. The temperature sensor for water meter with strong heat preservation performance according to claim 3, characterized in that: The shape of the inner bracket (30) is the same as that of the PCB (32), and the volume of the inner bracket (30) is greater than that of the PCB (32). The PCB (32) is located at the inner center of the inner bracket (30).

5. The temperature sensor for water meter with strong heat preservation performance according to claim 4, characterized in that: The inner bracket (30) matches the inner groove (31), and the thickness of the inner bracket (30) is smaller than the depth of the inner groove (31).

6. The temperature sensor for water meter with strong heat preservation performance according to claim 5, characterized in that: The outer surface of the PCB (32) is connected to a communication line (4); the PCB (32) is embedded in the inner bracket (30), and the communication line (4) passes through from the inside of the inner bracket (30) to the outside of the inner bracket (30).

7. The temperature sensor for water meter with strong heat preservation performance according to claim 6, characterized in that: The outer surface of the inner bracket (30) is provided with a hole matching the protrusion assembly (37), the embedded temperature measuring probe (38) is located at the center of the lower end of the PCB (32), and the embedded temperature measuring probe (38) passes through the inner bracket (30) to the outside of the lower end thereof.

8. The temperature sensor for water meter with strong heat preservation performance according to claim 7, characterized in that: The embedded temperature measuring probe (38) is made of brass material, and the joint between the PCB (32) and the embedded temperature measuring probe (38) is coated with thermal conductive silicone grease. The embedded temperature measuring probe (38) detects the water temperature inside the pipeline (1) through ultrasonic technology, and the positioning pin (39) is made of plastic material.

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