Probe compatible with thermal gas flow meter and anemometer

Abstract

The utility model relates to the field of gas flow monitoring, especially a kind of compatible hot gas flow meter and anemograph probe, by the adhesion between sensor and support, and the both sides of support are equipped with a plurality of limit slot, then heating wire is wound around the limit slot on support in turn, so that the bundle of support and sensor is tied, so it can effectively guarantee the connection stability of sensor and support, and due to the limit cooperation between heating wire and limit slot, it is also unnecessary to worry about installation stress to cause vibration to sensor when installing thereby influence measurement precision, and support can block particulate matter and other impurities in gas, avoid to cause damage to sensor, so overall structure stability is high, and manufacturing cost is lower, can be applicable to large-scale industrial production.

Description

Technical Field

[0001] This utility model relates to the field of gas flow monitoring, and in particular to a probe compatible with thermal gas flow meters and anemometers. Background Technology

[0002] With the development of technology and the increasing demands of industrial processes, gas flow sensors have been applied in many aspects of industry. For example, gas flow sensors are used in thermal gas flow meters and anemometers to detect information such as airflow rate and velocity. Currently, there are generally two types of gas flow sensors on the market: traditional capillary bypass sensors and MEMS (Micro-Electro-Mechanical Systems) sensors. Traditional capillary bypass sensors typically use an "I"-shaped metal capillary structure with a heating wire wound in the middle, and then use upstream and downstream spot-welded temperature measuring resistors. This structure is prone to failure at the weld points between the capillary and the sensor under vibration and is also sensitive to installation stress, making it prone to zero-point drift. On the other hand, MEMS sensors mainly use micromachining technology to create a suspended hot film (used to integrate heaters and temperature sensors) on a silicon wafer, thereby achieving ultimate thermal isolation. However, this structure requires a semiconductor process production line, resulting in high design and manufacturing costs. Furthermore, the suspended hot film structure is very fragile and cannot withstand the impact of particulate matter in the gas or oil contamination, requiring a high level of industrial environmental control.

[0003] The technical problem to be solved by this application is: to design a probe for compatible thermal gas flow meters and anemometers that has a stable structure and low manufacturing cost. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a probe for compatible thermal gas flow meters and anemometers that has a stable structure and low manufacturing cost.

[0005] The technical solution adopted in this utility model is as follows: a probe compatible with thermal gas flow meter and anemometer, including a bracket, a sensor attached to the bracket, several limiting grooves on both sides of the bracket, a heating wire wrapped around the bracket and the heating wire binding the sensor, and the heating wire and the limiting grooves are mutually limiting and cooperating.

[0006] In some embodiments, the limiting grooves are serrated and are equidistantly distributed on both sides of the bracket.

[0007] In some implementations, the support is made of an aluminum substrate.

[0008] In some embodiments, one end of the bracket is provided with a socket plate, and the limiting grooves are located on both sides of the bracket at the end away from the socket plate.

[0009] In some implementations, the two ends of the heating wire are soldered to the support.

[0010] In some implementations, the sensor terminals are soldered to the bracket.

[0011] In some implementations, the bracket has a rectangular cross-section, and the sensor is glued to one side of the bracket.

[0012] This invention has the following technical advantages: By bonding the sensor to the bracket and providing several limiting grooves on both sides of the bracket, and then winding the heating wire around the limiting grooves on the bracket in sequence, the bracket and the sensor are bound together. This effectively ensures the connection stability between the sensor and the bracket. Furthermore, due to the limiting fit between the heating wire and the limiting grooves, there is no need to worry about the installation stress causing vibration to the sensor and affecting the measurement accuracy during installation. In addition, the bracket can block impurities such as particulate matter in the gas, avoiding damage to the sensor. Therefore, the overall structure has high stability and low manufacturing cost, making it suitable for large-scale industrial production. Attached Figure Description

[0013] Figure 1 This is a front structural diagram of the probe for compatible thermal gas flow meters and anemometers of this utility model; Figure 2 This is a side view of the probe for a compatible thermal gas flow meter and anemometer.

[0014] The labels and names in the diagram correspond as follows: 1. Bracket; 2. Sensor; 3. Limiting groove; 4. Heating wire; 5. Socket plate. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-2 This utility model provides a technical solution: a probe compatible with thermal gas flow meters and anemometers, including a bracket, a sensor attached to the bracket, the terminal of the sensor being connected to the bracket by spot welding, and the cross-section of the bracket being rectangular. The sensor is glued to one side of the bracket. Therefore, during installation, attention should be paid to the installation direction of the probe. During installation, it is necessary to ensure that the sensor is located on the leeward side of the bracket. This allows the bracket to block impurities such as particulate matter in the airflow, thereby preventing particulate matter in the gas from impacting the sensor and damaging it. Several limiting grooves are provided on both sides of the bracket. The bracket is also equipped with a heating wire that is wound around it, and the heating wire also binds the sensor. When the heating wire is wound around the bracket, the heating wire and the limiting grooves on both sides of the bracket are in a limiting fit. By bonding the sensor to the bracket and providing several limiting grooves on both sides of the bracket, the heating wire is wound around the limiting grooves on the bracket in sequence, thereby binding the bracket and the sensor. This can effectively ensure the connection stability between the sensor and the bracket. The limiting grooves can also effectively prevent the heating wire from sliding or loosening from the bracket due to vibration or thermal expansion and contraction during the winding process or subsequent use. Furthermore, due to the limiting fit between the heating wire and the limiting grooves, there is no need to worry about the installation stress causing vibration to the sensor and thus affecting the measurement accuracy during installation.

[0017] The limiting grooves are serrated and are equidistantly distributed on both sides of the bracket. By equidistantly distributing the limiting grooves on both sides of the bracket, the uniformity of the winding of the heating wire can be effectively ensured, so that the heat carried away by the gas is uniform, and the heat dissipation of the heating wire is also uniform when it is heating.

[0018] The bracket is made of an aluminum substrate, which has excellent thermal conductivity, enabling rapid dissipation of heat from the heating wire and preventing localized overheating. In addition, the aluminum substrate structure provides fast response and high sensitivity.

[0019] One end of the bracket is equipped with a socket plate, and the limiting grooves are located on both sides of the end of the bracket away from the socket plate. The socket plate is used to connect with external products and equipment to supply power to the whole unit.

[0020] The two ends of the heating wire are soldered to the bracket, and the terminals of the sensor are soldered to the bracket. The solder joints between the heating wire and the sensor and the bracket are all on the leeward side during installation to avoid the impact of particulate matter or other impurities in the gas.

[0021] This probe is mainly used to detect the flow rate and velocity of gas, and can be used in both thermal gas flow meters and anemometers.

[0022] The working principle or beneficial effects of this utility model are as follows: By bonding the sensor to the bracket and providing several limiting grooves on both sides of the bracket, the heating wire is then wound around the limiting grooves on the bracket in sequence, thereby binding the bracket and the sensor. This effectively ensures the connection stability between the sensor and the bracket. Furthermore, due to the limiting fit between the heating wire and the limiting grooves, there is no need to worry about the installation stress causing vibration to the sensor and affecting the measurement accuracy during installation. In addition, the bracket can block impurities such as particulate matter in the gas, avoiding damage to the sensor. Therefore, the overall structure has high stability and low manufacturing cost, making it suitable for large-scale industrial production.

[0023] Finally, it should be noted that 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, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made 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 probe compatible with thermal gas flow meters and anemometers, characterized in that, The device includes a bracket with a sensor that is bonded to it. Several limiting grooves are provided on both sides of the bracket. A heating wire is wound around the bracket and binds the sensor. The heating wire and the limiting grooves are in a limiting fit.

2. The probe for compatible thermal gas flow meters and anemometers according to claim 1, characterized in that, The limiting groove is serrated and is equidistantly distributed on both sides of the bracket.

3. The probe for compatible thermal gas flow meters and anemometers according to claim 1, characterized in that, The support is made of an aluminum substrate.

4. The probe for compatible thermal gas flow meters and anemometers according to claim 1, characterized in that, One end of the bracket is provided with a socket plate, and the limiting groove is located on both sides of the bracket at the end away from the socket plate.

5. The probe for compatible thermal gas flow meters and anemometers according to claim 1, characterized in that, The two ends of the heating wire are soldered to the bracket.

6. The probe for compatible thermal gas flow meters and anemometers according to claim 1, characterized in that, The sensor's terminals are soldered to the bracket.

7. The probe for compatible thermal gas flow meters and anemometers according to claim 1, characterized in that, The bracket has a rectangular cross-section, and the sensor is glued to one side of the bracket.

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