Length-adjustable pitot tube

Abstract

The utility model discloses a pitot tube with an adjustable length. The pitot tube comprises a main body unit and an adjusting unit, the main body unit comprises a pitot tube main body, one end of the pitot tube main body is provided with a sampling port, a front end flange is arranged on the sampling port, and the sampling port is connected with a high-low pressure tube and a temperature tube through the front end flange; the adjusting unit comprises a movable flange, a loose joint clamping sleeve and a locking nut; compared with the prior art, the measuring precision and flexibility are remarkably improved, the length of the pitot tube is flexibly adjusted by introducing the adjusting unit, and the insertion length of the pitot tube can be accurately adjusted according to actual measuring requirements in high-temperature and corrosive environments such as a chimney; the design not only improves the accuracy of measurement, but also greatly enhances the applicability of the pitot tube in different environments and conditions, thereby improving the universality and efficiency of the measurement work.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring tools, in particular to a Pitot tube with adjustable length. Background Art

[0002] As a precision measurement tool, the Pitot tube's primary function is to accurately measure fluid velocity or dynamic pressure. Consequently, it has found widespread application in fields such as meteorological observation, aerospace, and industrial production. However, traditional Pitot tube designs often suffer from fixed structures and non-adjustable lengths, significantly limiting their flexible application in diverse environments and conditions.

[0003] Adjusting the length of the Pitot tube is particularly important in high-temperature, highly corrosive industrial environments, such as chimneys. Due to the complex internal environment of chimneys, large temperature fluctuations, and the frequent presence of corrosive substances, the insertion length of the Pitot tube must be precisely adjusted based on the actual site conditions to ensure accurate and safe measurements. However, existing Pitot tubes are mostly made of stainless steel. While they offer some corrosion resistance and high-temperature resistance, they often lack flexibility in length design.

[0004] These pitot tubes (such as Figure 2 (As shown, the proper insertion length is typically calculated based on the chimney's diameter and fixed during the manufacturing process.) Once the Pitot tube is inserted into the chimney and secured with a fixing flange, its length cannot be adjusted. While this design meets basic measurement needs to a certain extent, it has significant drawbacks. If the measured value deviates due to an inappropriate insertion length, personnel are often unable to adjust the Pitot tube length to correct the error, increasing maintenance costs and difficulties.

[0005] Furthermore, the non-adjustable length of traditional pitot tubes limits their versatility in different chimneys or under different measurement conditions. Workers often need to prepare pitot tubes of varying lengths for different measurement needs, which not only increases procurement costs but also reduces work efficiency.

[0006] In summary, existing Pitot tubes have significant shortcomings in length adjustment, failing to meet the high demands for measurement accuracy and flexibility in high-temperature and corrosive environments. Therefore, developing an adjustable length Pitot tube to overcome these shortcomings is of great practical significance and application value. Utility Model Content

[0007] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0008] Therefore, in order to solve the above technical problems, the present utility model provides the following technical solutions: a length-adjustable pitot tube, comprising a main unit and an adjustment unit;

[0009] The main unit includes a pitot tube body, one end of the pitot tube body is provided with a sampling port, a front end flange is arranged on the sampling port, and high and low pressure pipes and a temperature pipe are connected through the front end flange;

[0010] The adjustment unit includes a movable flange, a flexible ferrule and a locking nut. The movable flange is detachably connected to the pitot tube body. The flexible ferrule is used to connect the movable flange and the pitot tube body. The locking nut cooperates with the flexible ferrule. By adjusting the tightness of the locking nut, the position of the movable flange relative to the pitot tube body is controlled, thereby adjusting the length of the pitot tube body from the sampling port to the movable flange, thereby achieving the purpose of freely adjusting the chimney insertion length of the pitot tube body.

[0011] As a preferred solution of the adjustable length Pitot tube of the utility model, the movable flange has a mounting hole matching the flexible ferrule, and one end of the flexible ferrule passes through the mounting hole and is connected to the locking nut.

[0012] As a preferred solution of the length-adjustable pitot tube of the utility model, the movable flange and the pitot tube body are quickly disassembled and assembled through the movable sleeve and the locking nut, so that the damaged part can be easily replaced.

[0013] As a preferred solution of the length-adjustable pitot tube of the utility model, the movable ferrule is sleeved on the pitot tube body, and the inner surface of the movable ferrule is tightly matched with the outer surface of the pitot tube body.

[0014] As a preferred solution of the adjustable length Pitot tube described in the utility model, an external thread structure is arranged on the outer wall of the movable sleeve, and the inner surface of the locking nut has an internal thread matching the outer surface of the movable sleeve, and the locking nut is rotated to achieve tightening or loosening with the movable sleeve.

[0015] As a preferred solution of the adjustable length Pitot tube described in the utility model, the locking nut is made of stainless steel, the flexible sleeve is made of high-temperature material PTFE, and the Pitot tube body, movable flange, flexible sleeve and locking nut are all corrosion-resistant and high-temperature resistant.

[0016] Beneficial effects of the utility model:

[0017] 1. Compared with the existing technology, the present invention significantly improves the measurement accuracy and flexibility. By introducing an adjustment unit, the present invention realizes the flexible adjustment of the pitot tube length and can accurately adjust the insertion length of the pitot tube according to the actual measurement requirements in high-temperature and corrosive environments such as chimneys. This design not only improves the measurement accuracy, but also greatly enhances the applicability of the pitot tube in different environments and conditions, making the measurement work more flexible and efficient.

[0018] 2. Compared with the existing technology, the present invention can effectively reduce the maintenance cost and difficulty of the product. Once the traditional pitot tube is inserted to an inappropriate length, it is often difficult to adjust, resulting in measurement value deviation, increasing maintenance cost and difficulty. The adjustable length pitot tube of the present invention can achieve quick adjustment of the length by simply rotating the locking nut, without replacing the entire pitot tube, thereby effectively reducing maintenance costs. At the same time, this design also simplifies the maintenance process and improves work efficiency.

[0019] 3. Compared with the existing technology, the present invention enhances structural durability and safety. The present invention uses corrosion-resistant and high-temperature resistant materials (such as stainless steel and PTFE) to make the key components of the pitot tube, ensuring the long-term stable operation of the pitot tube in high-temperature and corrosive environments; in addition, through the design of the adjustment unit, the staff can adjust the length without damaging the pitot tube, avoiding structural damage or safety hazards caused by improper adjustment, and further improving the safety and durability of the pitot tube.

[0020] 4. Compared with the existing technology, the present invention improves the versatility and efficiency of measurement work. Since traditional pitot tubes are not adjustable in length, workers often need to prepare pitot tubes of different lengths for different measurement needs. The adjustable length pitot tube of the present invention can adapt to different measurement conditions through simple adjustment, and there is no need to prepare pitot tubes of multiple lengths, thereby improving the versatility and efficiency of measurement work. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0023] Figure 2 It is a schematic diagram of the overall structure of the prior art.

[0024] In the figure: 100, main unit; 101, Pitot tube body; 102, front flange; 103, high and low pressure pipes; 104, temperature pipe; 105, fixing flange;

[0025] 200, adjustment unit; 201, movable flange; 202, flexible fitting; 203, locking nut. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views of device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0030] Reference Figure 1 , is an embodiment of the present utility model, which provides a length-adjustable pitot tube, comprising a main unit 100 and an adjustment unit 200;

[0031] The main unit 100 includes a pitot tube body 101, a sampling port is provided at one end of the pitot tube body 101, a front flange 102 is arranged on the sampling port, and high and low pressure pipes 103 and a temperature pipe 104 are connected through the front flange 102;

[0032] The adjustment unit 200 includes a movable flange 201, a flexible ferrule 202, and a locking nut 203. The movable flange 201 is detachably connected to the pitot tube body 101. The movable flange 201 has a mounting hole that matches the flexible ferrule 202. One end of the flexible ferrule 202 passes through the mounting hole and is connected to the locking nut 203.

[0033] The movable sleeve 202 is used to connect the movable flange 201 and the pitot tube body 101. The movable flange 201 and the pitot tube body 101 are quickly disassembled and assembled through the movable sleeve 202 and the locking nut 203, which facilitates the replacement of damaged parts. The movable sleeve 202 is sleeved on the pitot tube body 101, and the inner surface of the movable sleeve 202 is tightly matched with the outer surface of the pitot tube body 101.

[0034] An external thread structure is arranged on the outer wall of the flexible ferrule 202, and the inner surface of the locking nut 203 has an internal thread matching the outer surface of the flexible ferrule 202. The locking nut 203 is rotated to achieve tightening or loosening with the flexible ferrule 202; the locking nut 203 cooperates with the flexible ferrule 202, and the position of the movable flange 201 relative to the pitot tube body 101 is controlled by adjusting the tightness of the locking nut 203, thereby adjusting the length of the pitot tube body 101 from the sampling port to the movable flange 201, thereby achieving the purpose of freely adjusting the chimney insertion length of the pitot tube body 101;

[0035] The locking nut 203 is made of stainless steel, the flexible sleeve 202 is made of high-temperature material PTFE, and the Pitot tube body 101, the movable flange 201, the flexible sleeve 202 and the locking nut 203 are all corrosion-resistant and high-temperature-resistant.

[0036] In this embodiment: the movable flange 201 is sleeved on the pitot tube body 101 through the flexible sleeve 202, and the inner surface of the flexible sleeve 202 is tightly matched with the outer surface of the pitot tube body 101; the locking nut 203 is rotated, and the external thread structure of the flexible sleeve 202 is matched with the locking nut 203 to achieve the tightening or loosening of the flexible sleeve 202; after loosening the locking nut 203, the movable flange 201 can be moved to the desired position, and then the locking nut 203 is tightened to fix the movable flange 201; the sampling port at one end of the pitot tube body 101 is connected to the high and low pressure pipes 103 and the temperature pipe 104 through the front flange 102, which is used to measure fluid parameters in high-temperature environments such as chimneys.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A pitot tube with adjustable length, characterized by: It comprises a main body unit (100) and an adjustment unit (200); The main unit (100) comprises a pitot tube main body (101), a sampling port is provided at one end of the pitot tube main body (101), a front end flange (102) is arranged on the sampling port, and high and low pressure pipes (103) and a temperature pipe (104) are connected via the front end flange (102); The adjustment unit (200) comprises a movable flange (201), a flexible sleeve (202) and a locking nut (203); the movable flange (201) is detachably connected to the pitot tube body (101); the flexible sleeve (202) is used to connect the movable flange (201) and the pitot tube body (101); the locking nut (203) cooperates with the flexible sleeve (202); by adjusting the tightness of the locking nut (203), the position of the movable flange (201) relative to the pitot tube body (101) is controlled, thereby adjusting the length of the pitot tube body (101) from the sampling port to the movable flange (201), thereby achieving the purpose of freely adjusting the chimney insertion length of the pitot tube body (101).

2. The length-adjustable Pitot tube according to claim 1, characterized in that: The movable flange (201) has a mounting hole that matches the movable ferrule (202), and one end of the movable ferrule (202) passes through the mounting hole and is connected to the locking nut (203).

3. The length-adjustable Pitot tube according to claim 1, wherein: The movable flange (201) and the pitot tube body (101) are quickly disassembled and assembled via the movable sleeve (202) and the locking nut (203), making it easy to replace damaged parts.

4. The length-adjustable Pitot tube according to claim 1, wherein: The movable sleeve (202) is sleeved on the pitot tube body (101), and the inner surface of the movable sleeve (202) is tightly matched with the outer surface of the pitot tube body (101).

5. The length-adjustable Pitot tube according to claim 1, characterized in that: An external thread structure is arranged on the outer wall of the movable sleeve (202), and the inner surface of the locking nut (203) has an internal thread matching the outer surface of the movable sleeve (202). The locking nut (203) is rotated to achieve tightening or loosening with the movable sleeve (202).

6. The length-adjustable Pitot tube according to claim 1, characterized in that: The locking nut (203) is made of stainless steel, the flexible sleeve (202) is made of high-temperature material PTFE, and the Pitot tube body (101), the movable flange (201), the flexible sleeve (202) and the locking nut (203) are all corrosion-resistant and high-temperature-resistant.

Images