Anti-clogging pitot tube flow measuring device

Abstract

The utility model discloses a kind of anti-blocking pitot tube measuring flow equipment, equipment is equipped with the steel pipe with double-layer channel, one layer channel is static pressure intake pipe, another layer is full pressure intake main pipe, the one end of the steel pipe is the air outlet end of static pressure intake pipe and full pressure intake main pipe, the other end of the steel pipe is the air inlet end of static pressure intake pipe and full pressure intake main pipe, the air inlet end of the full pressure intake main pipe is connected with the full pressure intake pipe of transverse, constitute T-shaped structure, the full pressure intake pipe one end is full pressure intake end, the other end is equipped with detachable cap. The utility model starts from the angle of accurately measuring gas flow, can more accurately, more conveniently measure the gas flow of pitot tube, and measuring equipment is not easy to block, further provides foundation for equipment accurate measurement, and after each use, it is convenient to clean, also can further ensure that next time test will not be blocked.

Description

Technical Field

[0001] This utility model relates to the field of gas flow measurement technology. Background Technology

[0002] Pitot tubes are commonly used industrial production devices. For example, the patent publication with authorization announcement number 204027611U and authorization announcement date of December 17, 2014, entitled "A Novel Wear-Resistant Pitot Tube", discloses a Pitot tube including a Pitot tube pressure tap end tube body, a Pitot tube pressure tap end tube body, and an external protective tube. One side of the Pitot tube pressure tap end tube body is the part outside the tested pipeline, and the open end on the other side is the first connection end. The open end on one side of the Pitot tube pressure tap end tube body is the second connection end, and a pressure tap is provided on the other side. The first connection end and the second connection end are connected by welding, and a sealant is provided at the connection between the first connection end and the second connection end. An external protective tube is fitted on the external tube body at the connection between the first connection end and the second connection end, and a tungsten carbide coating is sprayed on the outer wall of the external protective tube. The Pitot tube pressure tap end tube body is made of high chromium steel, and the Pitot tube pressure tap end tube body and the external protective tube (5) are made of stainless steel.

[0003] However, traditional pitot tubes are prone to clogging. Since most pitot tubes are L-shaped or S-shaped, when measuring dusty or humid gases, the pressure sensor orifice is easily blocked by particles or condensate, resulting in large measurement errors. Furthermore, as the measurement time increases, the blockage of the pressure sensor orifice by particles or condensate becomes more pronounced, directly affecting the measurement results or even making measurement impossible. This necessitates regular maintenance in factories, including cleaning before clogging occurs. Frequent disassembly and cleaning are required to avoid clogging, which affects testing efficiency. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to realize a Pitot tube flow measurement device that is not easily clogged.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a device for measuring flow rate using a clogging-proof Pitot tube, the device having a steel pipe with a double-layer channel, one layer being a static pressure air inlet pipe and the other layer being a total pressure air inlet main pipe, one end of the steel pipe being the outlet end of the static pressure air inlet pipe and the total pressure air inlet main pipe, and the other end of the steel pipe being the inlet end of the static pressure air inlet pipe and the total pressure air inlet main pipe, the inlet end of the total pressure air inlet main pipe being connected to a horizontally placed total pressure air inlet pipe, forming a T-shaped structure, one end of the total pressure air inlet pipe being the total pressure air inlet end, and the other end being provided with a detachable nut.

[0006] The static pressure intake pipe and the total pressure intake pipe are arranged in parallel, and their inner diameters and lengths are the same.

[0007] The static pressure intake pipe and the total pressure intake pipe are independent pipes welded together as a whole.

[0008] The outlet ends of the static pressure intake pipe and the total pressure intake pipe branch off to form a static pressure outlet end and a total pressure outlet end.

[0009] The total pressure intake pipe has an outer diameter of 10mm, an inner diameter of 9mm, and a length of 15cm.

[0010] The inlet of the full-pressure intake pipe has a gradually decreasing frustum-shaped structure.

[0011] The removable nut is covered with a plastic layer, and the removable nut is connected to the other end of the full-pressure intake pipe by a thread.

[0012] This invention, from the perspective of accurately measuring gas flow, enables more accurate and convenient measurement of gas flow in a Pitot tube. Furthermore, the measuring device is less prone to clogging, providing a foundation for accurate measurement. It is also easy to clean after each use, ensuring that it will not clog during the next test. Attached Figure Description

[0013] The following is a brief explanation of the content and markings in each of the accompanying drawings in this utility model specification:

[0014] Figure 1 Top view of the device for measuring flow rate using a Pitot tube to prevent clogging;

[0015] Figure 2 Front view of the device used to measure flow rate using a Pitot tube to prevent clogging;

[0016] The markings in the above diagrams are as follows: 1. Static pressure outlet, 2. Total pressure outlet, 3. Steel pipe, 4. Static pressure inlet, 5. Total pressure inlet, 6. Removable nut. Detailed Implementation

[0017] The following description, with reference to the accompanying drawings, details the specific implementation of this utility model, including the shape and structure of each component, the relative positions and connections between the parts, the function and working principle of each part, the manufacturing process, and the operation and use methods. This will help those skilled in the art to have a more complete, accurate, and in-depth understanding of the inventive concept and technical solution of this utility model.

[0018] The anti-clogging Pitot tube flow measurement device is designed from the perspective of accurately measuring gas flow. By using the invented device, gas flow can be measured more accurately and conveniently. At the same time, after a measurement, the device is easy to maintain and clean, further providing a foundation for accurate measurement.

[0019] The main body of the equipment is a double-layered steel pipe 3. The length of the steel pipe 3 can be designed according to needs. The structure of the double-layered steel pipe 3 is that it is separated by a partition in the middle, so that the steel pipe 3 forms two passages. One passage is a static pressure air inlet pipe and the other passage is a full pressure air inlet main pipe. For the convenience of production, the steel pipe 3 can be changed to a pipeline composed of two independent pipes welded together, that is, one pipe is a static pressure air inlet pipe and the other pipe is a full pressure air inlet main pipe. One end of the steel pipe 3 is the outlet end of the static pressure air inlet pipe and the full pressure air inlet main pipe, and the other end of the steel pipe 3 is the inlet end of the static pressure air inlet pipe and the full pressure air inlet main pipe. In order to facilitate the connection with other pipelines, the outlet end needs to be forked to form two independent static pressure outlet end 1 and full pressure outlet end 2. The distance between the outer ends of the static pressure outlet end 1 and the full pressure outlet end 2 is at least 20mm, so as to facilitate the connection with other pipelines.

[0020] The other end of the steel pipe 3 is the inlet end of the static pressure inlet pipe and the total pressure inlet main pipe. The inlet end of the static pressure inlet pipe is not modified and is a conventional pipe joint. The inlet end of the total pressure inlet main pipe is connected to the horizontally placed total pressure inlet pipe. That is, the total pressure inlet pipe and the total pressure inlet main pipe form a T-shaped structure. The end of the total pressure inlet main pipe is connected to the middle part of the total pressure inlet pipe. One end of the total pressure inlet pipe is the total pressure inlet end 5, and the other end is equipped with a detachable nut 6.

[0021] The main pipe of the full pressure intake pipe has an outer diameter of 10mm, an inner diameter of 9mm, and a length of 15cm. The full pressure intake end 5 has a tapered structure, that is, the whole structure is a frustum-shaped structure, with the pipe diameter gradually decreasing towards the outside. The inner diameter at the top is 5mm. The tail of the full pressure intake pipe is equipped with a sealing nut and covered with a plastic layer, which serves both as a seal and a connection to prevent airtightness issues.

[0022] The static pressure intake pipe and the total pressure intake main pipe are arranged parallel to each other on the left side. The outer and inner diameters of the static pressure main pipe and the head are the same as those of the total pressure intake pipe. The length of the static pressure main pipe is the same as that of the total pressure main pipe. The static pressure intake pipe, the total pressure intake main pipe, and the total pressure intake pipe can all be made of high-temperature resistant stainless steel pipe 3, and all are connected and fixed together by welding.

[0023] This product's total pressure inlet pipe is parallel to the airflow direction, resulting in a more accurate measurement of total pressure, similar to that of an L-shaped Pitot tube. Furthermore, the product's total pressure pipe is equipped with a sealing nut, making it suitable for measuring flow velocity in high-dust flue gas environments. Compared to a standard S-shaped pipe, dust entering the pipe can cause blockage at bends, affecting the Pitot tube coefficient. With this product, even in high-dust conditions, dust entering the total pressure pipe will remain at the tail nut, preventing blockage of the total pressure inlet and improving measurement accuracy. After each measurement, the tail nut can be removed for cleaning of internal dust using a brush or compressed air, ensuring accurate subsequent measurements. This design solves the problem of material blockage that occurs with ordinary Pitot tubes when measuring flow velocity in high dust concentrations, resulting in more accurate gas velocity measurements, significantly improving testing precision, and facilitating equipment maintenance.

[0024] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A device for measuring flow rate using a clog-resistant Pitot tube, characterized in that: The equipment is equipped with a steel pipe with a double-layer channel. One layer is a static pressure air inlet pipe, and the other layer is a full pressure air inlet main pipe. One end of the steel pipe is the outlet end of the static pressure air inlet pipe and the full pressure air inlet main pipe, and the other end of the steel pipe is the air inlet end of the static pressure air inlet pipe and the full pressure air inlet main pipe. The air inlet end of the full pressure air inlet main pipe is connected to the horizontally placed full pressure air inlet pipe, forming a T-shaped structure. One end of the full pressure air inlet pipe is the full pressure air inlet end, and the other end is equipped with a detachable nut.

2. The device for measuring flow rate using an anti-clogging Pitot tube according to claim 1, characterized in that: The static pressure intake pipe and the total pressure intake pipe are arranged in parallel, and their inner diameters and lengths are the same.

3. The device for measuring flow rate using an anti-clogging Pitot tube according to claim 2, characterized in that: The static pressure intake pipe and the total pressure intake pipe are independent pipes welded together as a whole.

4. The device for measuring flow rate using an anti-clogging Pitot tube according to claim 3, characterized in that: The outlet ends of the static pressure intake pipe and the total pressure intake pipe branch off to form a static pressure outlet end and a total pressure outlet end.

5. The device for measuring flow rate using an anti-clogging Pitot tube according to any one of claims 1-4, characterized in that: The total pressure intake pipe has an outer diameter of 10mm, an inner diameter of 9mm, and a length of 15cm.

6. The device for measuring flow rate using an anti-clogging Pitot tube according to claim 5, characterized in that: The inlet of the full-pressure intake pipe has a gradually decreasing frustum-shaped structure.

7. The device for measuring flow rate using an anti-clogging Pitot tube according to claim 6, characterized in that: The removable nut is covered with a plastic layer, and the removable nut is connected to the other end of the full-pressure intake pipe by a thread.

Images