Ultrasonic heat meter flowmeter

Abstract

The utility model relates to a flow meter of an ultrasonic heat meter. The flow meter comprises a hollow meter shell, two reflecting mirror mounting holes and two transducer mounting holes are symmetrically formed in the two ends of the top of the meter shell; the reflector mounting hole and the transducer mounting hole are formed in the same side of the meter shell and are positioned on the same horizontal axis; the two reflecting mirror mounting holes are internally provided with reflecting mirrors; the two transducer mounting holes are respectively and internally provided with a transducer; a reflector pressing block used for pressing is further arranged in the reflector mounting hole. The reflecting mirror and the energy converter are packaged in the reflecting mirror mounting hole and the energy converter mounting hole through a pressing plate; and the pressing plate is fixed on the meter shell through a screw. Compared with the prior art, the machining device has the advantages that machining of transducer mounting holes, reflector mounting holes and screw fixing holes can be completed through one-time clamping, in batch production, product machining and manufacturing size consistency is good, errors are small, and product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat meters, in particular to an ultrasonic heat meter flow meter. Background Art

[0002] A heat meter is an instrument used for heat measurement. It uses two sensors, temperature and flow, to measure the flow of the heat carrier and the temperature of the inlet and outlet water respectively, and then obtains the heat value through compensation and integration of density and enthalpy values. There are three types of flow meters currently used in heat meters: mechanical, ultrasonic and electromagnetic. Among them, reflective ultrasonic flow sensors are widely used. Its structure mainly consists of a case, a set of transducers and two reflectors. The transducer emits ultrasonic waves, which are reflected twice by the reflector and received by the transducer at the other end and converted into electrical signals. Since the sound wave is superimposed with the flow rate of water during transmission, that is, the time taken for the ultrasonic wave to propagate the same distance downstream is shorter than the time taken for the ultrasonic wave to propagate upstream, this principle is used in combination with the cross-sectional area of ​​the water passing through the pipe to calculate the flow rate and volume of the water. In principle, it can be seen that controlling the distance of sound wave propagation and the angle of sound wave reflection is an important factor in ensuring the accuracy of measurement.

[0003] At present, the reflector and transducer of the commonly used ultrasonic flow meter are almost not installed on the same plane. That is, when processing the reflector and the transducer installation matching parts, the clamping of the shell needs to be changed many times, which affects the control of processing accuracy and the consistency of product size. Such installation will lead to the inability to control the distance between holes within a very small error range, thereby affecting the distance and angle of ultrasonic propagation due to the inconsistency and error of the shell processing size. Utility Model Content

[0004] The purpose of the utility model is to provide an ultrasonic heat meter flowmeter in order to overcome the defects of the prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] An ultrasonic heat meter flow meter, the flow meter comprises a case with a hollow interior; two reflector mounting holes and two transducer mounting holes are symmetrically arranged at two ends of the top of the case; the reflector mounting holes and the transducer mounting holes are arranged on the same side of the case and are located on the same horizontal axis; reflectors are installed in the two reflector mounting holes; transducers are installed in the two transducer mounting holes; reflector pressing blocks for pressing are also arranged in the reflector mounting holes; the reflectors and transducers are encapsulated in the reflector mounting holes and the transducer mounting holes through a pressing plate; the pressing plate is fixed to the case by screws.

[0007] Furthermore, a reflector sealing ring for waterproof sealing is arranged at the bottom of the reflector pressing block; and a transducer sealing ring for waterproof sealing is arranged at the bottom of the transducer.

[0008] Furthermore, a temperature sensor for measuring temperature is provided on the side of the transducer mounting hole on one side of the watch case; the temperature sensor is fixed to the watch case by threaded assembly.

[0009] Furthermore, the temperature sensor is provided with a temperature sensor sealing ring for waterproof sealing.

[0010] Furthermore, the pressing plate is made of metal material.

[0011] Furthermore, the pressing plate has a circular wire outlet hole above the transducer mounting hole.

[0012] Furthermore, both ends of the casing are provided with threaded interfaces for connecting to the heating pipe.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] The utility model sets the transducer mounting hole and the reflector mounting hole on the same side of the watch case and on the same horizontal axis, that is, the processing of all mounting holes can be completed by one clamping, including the fixing holes at the screw fixing position. The transducer mounting hole and the reflector mounting hole are located on the same axis, and the axis parallelism between the holes, the depth difference between the transducer mounting hole and the reflector mounting hole, and the spacing between the holes can be easily controlled within a very small error range, avoiding the influence of the inconsistency and error of the machining dimensions of the watch case on the distance and angle of ultrasonic propagation, ensuring the consistency of the machining dimensions, improving the quality of the product, making the measurement results more accurate, and more suitable for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 An exploded diagram of the structure provided by the utility model;

[0016] Figure 2 This is a structural cross-sectional view provided by the utility model.

[0017] The numbers in the figure show:

[0018] 1. Case; 2. Reflector mounting hole; 3. Transducer mounting hole; 4. Reflector; 5. Transducer; 6. Reflector pressure block; 7. Pressure plate; 8. Screws; 9. Reflector sealing ring; 10. Transducer sealing ring; 11. Temperature sensor; 12. Temperature sensor sealing ring; 13. Wire outlet hole; 14. Threaded interface. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0023] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] Example

[0026] like Figure 1 and 2As shown, an ultrasonic heat meter flowmeter comprises a case 1 with a hollow interior, and both ends of the case 1 are provided with threaded interfaces 14 for connecting to a heating pipe; two reflector mounting holes 2 and two transducer mounting holes 3 are symmetrically provided at both ends of the top of the case 1; the reflector mounting holes 2 and the transducer mounting holes 3 are arranged on the same side of the case 1 and on the same horizontal axis, and the processing of all the mounting holes can be completed by clamping once, which can avoid the influence of the inconsistency and error of the processing size of the case 1 on the distance and angle of ultrasonic propagation, ensure the consistency of the processing size, improve the quality of the product, make the measurement results more accurate, and be more suitable for mass production. The two reflector mounting holes 2 are both installed with reflectors 4; the two transducer mounting holes 3 are both installed with transducers 5; the reflector mounting hole 2 is also provided with a reflector pressing block 6 for pressing the reflector 4; the reflector 4 and the transducer 5 are encapsulated in the reflector mounting hole 2 and the transducer mounting hole 3 by a pressing plate 7 made of a metal material; the pressing plate 7 is fixed to the watch case 1 by screws 8, and a plurality of screws 8 are provided to form a multi-directional fixation on the pressing plate 7; the pressing plate 7 is above the transducer mounting hole 3 A circular wire outlet hole 13 is opened at the position for wire outlet from the top of the transducer 5; a temperature sensor 11 is arranged on the side of the transducer mounting hole 3 on one side of the watch case 1 for measuring the temperature of water flowing through the inside of the watch case 1; the temperature sensor 11 is fixed to the watch case 1 by threaded assembly; a reflector sealing ring 9 is arranged at the bottom of the reflector pressing block 6, a transducer sealing ring 10 is arranged at the bottom of the transducer 5, and a temperature sensor sealing ring 12 is arranged on the temperature sensor 11, which plays a role of waterproof sealing to prevent leakage.

[0027] The installation steps of this utility model are as follows:

[0028] First, install the transducer 5 in the transducer mounting holes 3 at both ends, then put the reflector 4 into the reflector mounting hole 2 from the threaded interfaces 14 at both ends of the case 1, use the reflector pressing block 6 to tighten it, align the upper pressing plate 7 with the opening position, fix the pressing plate 7 on the case 1 with multiple screws 8, fix the reflector 4 and the transducer 5, and finally install the temperature sensor 11 on the side of the case 1 by threaded assembly, and the installation is completed.

[0029] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. An ultrasonic heat meter flowmeter, characterized in that: The flow meter comprises a hollow case (1); two reflector mounting holes (2) and two transducer mounting holes (3) are symmetrically arranged at two ends of the top of the case (1); the reflector mounting holes (2) and the transducer mounting holes (3) are arranged on the same side of the case (1) and are located on the same horizontal axis; a reflector (4) is installed in each of the two reflector mounting holes (2); a transducer (5) is installed in each of the two transducer mounting holes (3); a reflector pressing block (6) for pressing is also arranged in the reflector mounting hole (2); the reflector (4) and the transducer (5) are encapsulated in the reflector mounting hole (2) and the transducer mounting hole (3) by a pressing plate (7); the pressing plate (7) is fixed to the case (1) by screws (8).

2. The ultrasonic heat meter flowmeter according to claim 1, characterized in that: The bottom of the reflector pressing block (6) is provided with a reflector sealing ring (9) for waterproof sealing; the bottom of the transducer (5) is provided with a transducer sealing ring (10) for waterproof sealing.

3. The ultrasonic heat meter flowmeter according to claim 1, characterized in that: A temperature sensor (11) for measuring temperature is arranged on the side of the transducer mounting hole (3) on one side of the watch case (1); the temperature sensor (11) is fixed to the watch case (1) by means of threaded assembly.

4. The ultrasonic heat meter flowmeter according to claim 3, characterized in that: The temperature sensor (11) is provided with a temperature sensor sealing ring (12) for waterproof sealing.

5. The ultrasonic heat meter flowmeter according to claim 1, characterized in that: The pressing plate (7) is a pressing plate made of metal material.

6. The ultrasonic heat meter flowmeter according to claim 1, characterized in that: The pressing plate (7) is provided with a circular wire outlet hole (13) at a position above the transducer installation hole (3).

7. The ultrasonic heat meter flowmeter according to claim 1, characterized in that: Both ends of the meter housing (1) are provided with threaded interfaces (14) for connecting to a heating pipeline.

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