Portable modular three-dimensional pitot tube flow rate automatic measuring device

Abstract

The application relates to the technical field of flow velocity measurement, in particular to a portable modular three-dimensional pitot tube flow velocity automatic measuring device, which comprises a measuring device main body, a mounting mechanism and an extension mechanism, wherein the mounting mechanism is arranged on the outer wall of the measuring device main body; the extension mechanism is arranged on the outer wall of the mounting mechanism; the mounting mechanism comprises a first connecting pipe, a second connecting pipe, a first spring, a sliding sleeve, a moving column and a moving ring, one end of the first connecting pipe is connected with the measuring device main body, a fixing groove is arranged on the outer wall of the first connecting pipe, and the second connecting pipe is sleeved on the outer wall of the first connecting pipe. Through the arrangement of the mounting mechanism, the probe is disassembled and stored in the non-working state, the overall occupied space of the device is reduced, the long probe is prevented from protruding from the outer wall of the device, the device is convenient for workers to carry on the shoulder or to carry by hand, and the carrying demand of outdoor flow operation is adapted.

Description

Technical Field

[0001] This application relates to the technical field of flow velocity measurement, and more particularly to a portable modular three-dimensional pitot tube automatic flow velocity measurement device. Background Technology

[0002] In experimental research and engineering testing in fields such as thermal power generation, energy conservation and environmental protection, and fluid mechanics, it is often necessary to measure the airflow velocity in places such as pipelines, wind tunnels, and flues. The three-dimensional Pitot tube automatic velocity measurement device is a commonly used contact velocity measurement device. The three-dimensional Pitot tube automatic velocity measurement device can simultaneously measure the velocity components of airflow in three directions. Compared with the traditional single-point Pitot tube, it can obtain more comprehensive flow field information and is widely used in the detection of various complex flow fields.

[0003] Currently, most traditional three-dimensional Pitot tube flow velocity automatic measurement devices are one-piece fixed rod structures with an integral length that cannot be disassembled. This results in a large storage volume for field testing, making them unsuitable for small tool bags or shoulder bags for transport. Furthermore, the rod cannot be disassembled individually, making it cumbersome to carry during mobile testing, and the exposed probe is easily damaged during transport. A few segmented threaded splicing rods can only be lengthened, lacking an integral quick-release positioning and sealing structure, making disassembly and assembly time-consuming. After splicing, the sleeve is prone to circumferential torsion, and probe orientation misalignment can lead to errors in flow velocity calculation. Summary of the Invention

[0004] This application aims to at least partially address one of the technical problems in the related art.

[0005] One objective of this application is to provide a portable, modular, three-dimensional Pitot tube flow velocity automatic measurement device. Through the design of the mounting mechanism, the probe can be disassembled and stored when not in operation, reducing the overall space occupied by the device and preventing a long probe from protruding from the device's outer wall. This facilitates carrying the device in a bag or by hand, adapting to the carrying needs of outdoor mobile operations. Furthermore, by using it in conjunction with a telescopic mechanism, the probe's extension length can be flexibly adjusted according to on-site measurement requirements, adapting to measurement points at different depths. This eliminates the need for operators to prepare measuring rods of corresponding lengths in advance, further enhancing the device's adaptability to different measurement scenarios. Additionally, the probe can be retracted to reduce the overall length when not in operation, further minimizing the overall space occupied by the device.

[0006] To achieve the above objectives, a first aspect of this application provides a portable modular three-dimensional Pitot tube flow velocity automatic measuring device, comprising a measuring device body, a mounting mechanism, and a telescopic mechanism. The mounting mechanism is disposed on the outer wall of the measuring device body; the telescopic mechanism is disposed on the outer wall of the mounting mechanism; the mounting mechanism includes a first connecting pipe, a second connecting pipe, a first spring, a sliding sleeve, a movable column, and a movable ring. One end of the first connecting pipe is connected to the measuring device body; a fixing groove is formed on the outer wall of the first connecting pipe; the second connecting pipe is sleeved on the outer wall of the first connecting pipe; the first spring is sleeved on the outer wall of the second connecting pipe, and one end of the first spring is connected to the second connecting pipe; the sliding sleeve is connected to the other end of the first spring; the movable column is slidably disposed inside the second connecting pipe; and the movable ring is slidably disposed inside the second connecting pipe.

[0007] In addition, the portable modular three-dimensional Pitot tube flow velocity automatic measurement device proposed in this application may also have the following additional technical features: Specifically, the installation mechanism further includes a sealing component and a dustproof component, wherein the sealing component is disposed on the inner wall of the second connecting pipe; and the dustproof component is disposed on the inner wall of the second connecting pipe.

[0008] Specifically, the sealing assembly includes a second spring, a compression plate, a sealing ring, and a first limiting post. The second spring is disposed inside the second connecting pipe, and one end of the second spring is connected to the second connecting pipe. The compression plate is connected to the other end of the second spring. The sealing ring is disposed on the outer wall of the compression plate. The first limiting post is disposed inside the second spring, and one end of the first limiting post is connected to the second connecting pipe. The other end of the first limiting post is connected to the compression plate.

[0009] Specifically, the dustproof assembly includes a fixing ring, a third spring, and a dustproof net, wherein the fixing ring is fixed to the inner wall of the second connecting pipe; the third spring is disposed inside the second connecting pipe, and one end of the third spring is connected to the fixing ring, and the dustproof net is connected to the other end of the third spring.

[0010] Specifically, the telescopic mechanism includes an outer sleeve, a first guide block, a middle sleeve, a second guide block, an inner sleeve, a probe, a limiting member, and a locking assembly. One end of the outer sleeve is connected to one end of the second connecting pipe; the first guide block is fixed to the inner wall of the second connecting pipe; the middle sleeve is slidably disposed on the inner wall of the outer sleeve; a first guide groove is formed on the outer wall of the middle sleeve; the second guide block is fixed to the inner wall of the middle sleeve; the inner sleeve is slidably disposed on the inner wall of the middle sleeve; a second guide groove is formed on the outer wall of the inner sleeve; the probe is connected to one end of the inner sleeve; the limiting member is disposed on the inner wall of the first guide groove; and the locking assembly is disposed on the inner wall of the outer sleeve.

[0011] Specifically, the limiting component includes a first limiting block and a second limiting block, wherein the first limiting block is fixed on the inner wall of the first guide groove; and the second limiting block is fixed on the inner wall of the second guide groove.

[0012] Specifically, the locking assembly includes a fourth spring, a first locking block, a fifth spring, and a second locking block. The inner wall of the outer sleeve has multiple first locking slots spaced at equal intervals. The fourth spring is installed inside the middle sleeve, with one end connected to the middle sleeve, and the first locking block is connected to the other end of the fourth spring. The inner wall of the middle sleeve has multiple second locking slots spaced at equal intervals. The fifth spring is installed inside the inner sleeve, with one end connected to the inner sleeve, and the second locking block is connected to the other end of the fifth spring.

[0013] Specifically, the locking assembly further includes a second limiting post and a third limiting post, wherein the second limiting post is installed inside the fourth spring, and one end of the second limiting post is connected to the middle sleeve, and the other end of the second limiting post is connected to the first locking block; the third limiting post is installed inside the fifth spring, and one end of the third limiting post is connected to the inner sleeve, and the other end of the third limiting post is connected to the second locking block.

[0014] Specifically, the probe includes a sphere, wherein the sphere is connected to one end of the inner sleeve; a central hole, an upper hole, a lower hole, a left hole and a right hole are respectively opened on the outer wall of the sphere.

[0015] Specifically, the installation mechanism further includes a limiting ring, wherein anti-slip grooves are provided at equal intervals on the outer wall of the sliding sleeve; the limiting ring is sleeved on the outer wall of the second connecting pipe.

[0016] The portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to an embodiment of this application has the following beneficial effects: 1. This application adopts a modular assembly structure, which enables tool-free quick assembly and disassembly of the telescopic mechanism and the main body of the measuring device with the help of the installation mechanism. Different length telescopic sleeves or three-dimensional Pitot tube probes with different range and accuracy can be flexibly replaced according to different measurement conditions such as pipelines, ventilation, and open channels. When the equipment is not in use, the probe components can be disassembled and stored separately, which greatly reduces the space occupied by the whole machine and makes it easy to carry by hand or in a bag. It perfectly meets the portable use needs of outdoor mobile detection and on-site inspection.

[0017] 2. The installation mechanism features a spring-locked linkage structure. Pushing the sliding sleeve releases the lock, allowing for insertion and removal assembly. After releasing the sleeve, the spring automatically resets, securing the device. This simple and efficient disassembly and assembly process eliminates the need for wrenches, clips, or other auxiliary tools, significantly reducing the time spent replacing probe components on-site and improving testing efficiency. A limit ring restricts the sliding sleeve's travel, preventing it from completely detaching and being lost, ensuring long-term stable operation of the disassembly and assembly structure. Anti-slip grooves on the outer wall of the sleeve increase hand friction, preventing slippage during pushing and pulling operations and making gripping and operation easier.

[0018] 3. The installation mechanism integrates an adaptive sealing component. Relying on the second spring to continuously push the extrusion plate, the sealing ring is always kept in close contact with the outer wall of the first connecting pipe. This can automatically compensate for the wear caused by long-term friction of the sealing ring, continuously maintain the sealing effect of the gap between the first and second connecting pipes, effectively prevent water vapor and dust from entering the interior of the installation mechanism, prevent the internal moving column and moving ring from rusting and jamming, reduce the frequency of sealing ring replacement, reduce equipment operation and maintenance costs, and extend the service life of the whole machine.

[0019] 4. The second connecting pipe is equipped with an elastic buffer dustproof component. After the telescopic mechanism is disassembled, the dustproof net can seal the pipe opening, preventing dust and debris from falling into the multi-layer telescopic sleeve and avoiding the accumulation of impurities that could cause the sleeve to slide and jam. The third spring can buffer the impact of dust and water flow on the dustproof net, reduce the stress deformation and probability of damage to the dustproof net, continuously ensure the cleanliness of the inner wall of the telescopic sleeve, and ensure smooth adjustment of the sleeve.

[0020] 5. The telescopic mechanism adopts a three-stage guiding telescopic structure consisting of an outer sleeve, a middle sleeve, and an inner sleeve. With the help of guide grooves and guide blocks for circumferential limiting, each layer of sleeve will not rotate or deflect during the pulling and adjusting process, ensuring the stable orientation of the measuring hole of the front ball probe and eliminating errors in three-dimensional flow velocity measurement caused by probe angle deviation, effectively improving the accuracy of flow velocity vector measurement data. Limiting blocks are set in the groove to limit the maximum extension stroke of the sleeve, which can prevent the sleeve from being completely pulled out and falling off, improving the safety of the telescopic adjustment structure.

[0021] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the overall structure of a portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to an embodiment of this application; Figure 2 This is a schematic diagram of the mounting mechanism and telescopic mechanism of a portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to an embodiment of this application. Figure 3 This is a cross-sectional structural diagram of the mounting mechanism of a portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to an embodiment of this application; Figure 4 This is a schematic diagram of the internal structure of the mounting mechanism of a portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to an embodiment of this application; Figure 5 This is a schematic diagram of the telescopic mechanism of a portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to an embodiment of this application; Figure 6 This is a schematic diagram of the locking component structure of a portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to an embodiment of this application; Figure 7 According to one embodiment of this application, a portable modular three-dimensional Pitot tube automatic flow velocity measurement device is provided. Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 According to one embodiment of this application, a portable modular three-dimensional Pitot tube automatic flow velocity measurement device is provided. Figure 6 Enlarged structural diagram at point B; Figure 9 This is a schematic diagram of the probe structure of a portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to an embodiment of this application; Figure 10 This is a schematic diagram of the structure of a portable modular three-dimensional Pitot tube flow velocity automatic measuring device according to an embodiment of this application, showing the first locking block and the second limiting post working together.

[0023] As shown in the figure: 1. Measuring device body; 2. Mounting mechanism; 21. First connecting pipe; 22. Fixing groove; 23. Second connecting pipe; 24. First spring; 25. Sliding sleeve; 26. Anti-slip groove; 27. Moving column; 28. Moving ring; 29. ​​Limiting ring; 3. Sealing assembly; 31. Second spring; 32. Extrusion plate; 33. Sealing ring; 34. First limiting column; 4. Dustproof assembly; 41. Fixing ring; 42. Third spring; 43. Dustproof net; 5. Telescopic mechanism; 51. Outer sleeve; 52. First guide block; 53. Middle sleeve; 54. First guide groove; 55. Second guide block; 56. Inner sleeve; 57. Second guide groove; 58. Probe; 581. Ball; 582. Center hole; 583. Upper side hole; 584. Lower side hole; 585. Left side hole; 586. Right side hole; 6. Limiting component; 61. First limiting block; 62. Second limiting block; 7. Locking assembly; 71. First slot; 72. Fourth spring; 73. First locking block; 74. Second limiting post; 75. Second slot; 76. Fifth spring; 77. Second locking block; 78. Third limiting post. Detailed Implementation

[0024] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0025] The following description, in conjunction with the accompanying drawings, describes a portable modular three-dimensional pitot tube flow velocity automatic measurement device according to an embodiment of this application.

[0026] The portable modular three-dimensional Pitot tube automatic flow velocity measurement device provided in this application embodiment can be applied to on-site fluid flow velocity measurement in various scenarios, including fluid flow velocity detection inside industrial pipelines, airflow velocity measurement in ventilation and air conditioning systems, and flow velocity measurement in open channels of water conservancy projects. It can meet the adaptation requirements of different measurement scenarios for measurement depth, and is convenient for operators to carry and transport, adapting to the needs of on-site mobile operations.

[0027] like Figure 1-9 As shown in the figure, a portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to an embodiment of this application includes a measurement device body 1, a mounting mechanism 2, and a telescopic mechanism 5.

[0028] The installation mechanism 2 is installed on the outer wall of the main body 1 of the measuring device; the telescopic mechanism 5 is installed on the outer wall of the installation mechanism 2.

[0029] The mounting mechanism 2 includes a first connecting pipe 21, a second connecting pipe 23, a first spring 24, a sliding sleeve 25, a moving column 27, and a moving ring 28.

[0030] One end of the first connecting pipe 21 is connected to the main body 1 of the measuring device; a fixing groove 22 is provided on the outer wall of the first connecting pipe 21; the second connecting pipe 23 is sleeved on the outer wall of the first connecting pipe 21; the first spring 24 is sleeved on the outer wall of the second connecting pipe 23, and one end of the first spring 24 is connected to the second connecting pipe 23, and the sliding sleeve 25 is connected to the other end of the first spring 24; the moving column 27 is slidably disposed inside the second connecting pipe 23; and the moving ring 28 is slidably disposed inside the second connecting pipe 23.

[0031] It should be noted that the main body 1 of the measuring device described in this embodiment is the signal processing and display body of the existing three-dimensional Pitot tube flow velocity automatic measuring device. It can process the pressure signals of each measuring hole collected by the probe 58 and finally calculate the magnitude and direction of the three-dimensional flow velocity. Since its structure and principle are well known, they will not be described in detail here.

[0032] Specifically, this device adopts a modular assembly structure. The main body 1 of the measuring device can be quickly and independently disassembled and assembled with the telescopic mechanism 5 through the installation mechanism 2. The telescopic sleeve of the corresponding length or probe of different measurement range can be replaced separately according to the on-site measurement conditions.

[0033] During assembly, the worker first pushes the sliding sleeve 25 on the outer wall of the second connecting pipe 23 toward one side of the outer sleeve 51. As the sliding sleeve 25 moves, it compresses the first spring 24. When the sliding sleeve 25 continues to move until the inner wall is no longer compressing the moving column 27, the moving column 27 loses its compressive force. At this time, the worker inserts one end of the second connecting pipe 23 into the interior of the first connecting pipe 21. During the insertion process, when the first connecting pipe 21 contacts the moving ring 28, it compresses the moving ring 28 and the moving column 27 on the outer wall of the moving ring 28, moving them toward the cavity of the sliding sleeve 25. When one end of the second connecting pipe 23 is fully inserted into the interior of the first connecting pipe 21, the worker releases the sliding sleeve 25. The first spring 24 loses its compressive force and releases, causing the sliding sleeve 25 to return to its original position. The inner wall of the sliding sleeve 25 then compresses the moving column 27 again, causing the moving column 27 to move synchronously with the moving ring 28, locking the moving ring 28 into the fixing groove 22 on the outer wall of the first connecting pipe 21, thus completing the fixing and locking of the second connecting pipe 23 and the first connecting pipe 21.

[0034] During disassembly, the operator pushes the sliding sleeve 25 to compress the first spring 24, causing the compression part on the inner wall of the sliding sleeve 25 to disengage from the moving column 27. After the outer side of the moving column 27 loses its limiting compression force, the second connecting tube 23 can be pulled out from the first connecting tube 21 without the need for additional tools. The operation is convenient and quick, and probe 58 components of different lengths and accuracy levels can be quickly replaced according to the measurement scenario requirements to adapt to various measurement requirements.

[0035] Meanwhile, the modular assembly structure allows the device to be disassembled and stored when not in operation, reducing the overall space occupied by the device, preventing the long probe 58 from protruding from the outer wall of the device, making it convenient for operators to carry in bags or transport by hand, and meeting the carrying needs of outdoor mobile operations.

[0036] Furthermore, by using it in conjunction with the telescopic mechanism 5, the extension length of the probe 58 can be flexibly adjusted according to on-site measurement needs, adapting to measurement points at different depths. This eliminates the need for operators to prepare measuring rods of corresponding lengths in advance, further enhancing the device's adaptability to different measurement scenarios. Simultaneously, when not in operation, the probe 58 can be retracted to reduce its overall length, further minimizing the overall space occupied by the device.

[0037] like Figure 4 As shown, in one embodiment of this application, the mounting mechanism 2 further includes a sealing component 3 and a dustproof component 4.

[0038] The sealing component 3 is disposed on the inner wall of the second connecting pipe 23; the dustproof component 4 is disposed on the inner wall of the second connecting pipe 23.

[0039] Specifically, by setting the sealing component 3, after the telescopic mechanism 5 is installed by the installation mechanism 2, the sealing component 3 can seal and fill the gap between the second connecting pipe 23 and the first connecting pipe 21, preventing dust and moisture in the field environment from entering the interior of the installation mechanism 2 through the gap, preventing internal parts from being corroded by dust and moisture and causing problems such as jamming and rusting, ensuring the smoothness of disassembly and assembly operations, and extending the overall service life of the device.

[0040] Meanwhile, with the dustproof component 4 in place, after the telescopic mechanism 5 is disassembled by the installation mechanism 2, the dustproof component 4 can prevent dust and impurities in the external environment from entering the interior of each sleeve through the second connecting pipe 23, thus avoiding dust and impurities from adhering to the inner wall of the pipe and affecting the smoothness of the subsequent sliding adjustment of the telescopic mechanism.

[0041] like Figure 4 As shown, in one embodiment of this application, the sealing assembly 3 includes a second spring 31, a compression plate 32, a sealing ring 33, and a first limiting post 34.

[0042] The second spring 31 is disposed inside the second connecting pipe 23, and one end of the second spring 31 is connected to the second connecting pipe 23. The extrusion plate 32 is connected to the other end of the second spring 31. The sealing ring 33 is disposed on the outer wall of the extrusion plate 32. The first limiting post 34 is disposed inside the second spring 31, and one end of the first limiting post 34 is connected to the second connecting pipe 23. The other end of the first limiting post 34 is connected to the extrusion plate 32.

[0043] Specifically, after prolonged or repeated disassembly and assembly operations via the installation mechanism 2, when the sealing ring 33 becomes worn and thin, the second spring 31 will continuously push the extrusion plate 32, causing the extrusion plate 32 to keep the sealing ring 33 in contact with the outer wall of the first connecting pipe 21. This automatically compensates for the wear of the sealing ring 33, maintains a good sealing effect, and eliminates the need for frequent replacement of the sealing ring 33, thus reducing the maintenance cost and frequency of the device.

[0044] like Figure 4 As shown, in one embodiment of this application, the dustproof component 4 includes a retaining ring 41, a third spring 42, and a dustproof net 43.

[0045] The fixing ring 41 is fixed on the inner wall of the second connecting pipe 23; the third spring 42 is disposed inside the second connecting pipe 23, and one end of the third spring 42 is connected to the fixing ring 41, and the dustproof net 43 is connected to the other end of the third spring 42.

[0046] Specifically, when the telescopic mechanism 5 is detached from the main body 1 of the measuring device through the installation mechanism 2, the opening at one end of the second connecting pipe 23 will be directly exposed. At this time, the dustproof net 43 can prevent dust and impurities in the external environment from entering the interior of each sleeve through the second connecting pipe 23, thus avoiding dust and impurities from adhering to the inner wall of the pipe and affecting the smoothness of the subsequent sliding adjustment of the telescopic mechanism.

[0047] Meanwhile, with the third spring 42, when dust and impurities in the external environment collide with the dustproof net 43, the third spring 42 can buffer and absorb the impact force, improve the structural stability of the dustproof net 43, and extend the service life of the dustproof net 43.

[0048] like Figure 5 As shown, in one embodiment of this application, the telescopic mechanism 5 includes an outer sleeve 51, a first guide block 52, a middle sleeve 53, a second guide block 55, an inner sleeve 56, a probe 58, a limiting member 6, and a locking assembly 7.

[0049] In this configuration, one end of the outer sleeve 51 is connected to one end of the second connecting pipe 23; the first guide block 52 is fixed on the inner wall of the second connecting pipe 23; the middle sleeve 53 is slidably disposed on the inner wall of the outer sleeve 51; a first guide groove 54 is provided on the outer wall of the middle sleeve 53; the second guide block 55 is fixed on the inner wall of the middle sleeve 53; the inner sleeve 56 is slidably disposed on the inner wall of the middle sleeve 53; a second guide groove 57 is provided on the outer wall of the inner sleeve 56; the probe 58 is connected to one end of the inner sleeve 56; the limiting member 6 is disposed on the inner wall of the first guide groove 54; and the locking assembly 7 is disposed on the inner wall of the outer sleeve 51.

[0050] Specifically, when the extension length of probe 58 needs to be adjusted, the operator pulls out the middle sleeve 53. The first guide groove 54 on the outer wall of the middle sleeve 53 slides along the outer wall of the first guide block 52 inside the outer sleeve 51. The first guide block 52 restricts the sliding direction of the middle sleeve 53, preventing the middle sleeve 53 from circumferentially deflecting inside the outer sleeve 51. After the extension length of the middle sleeve 53 is adjusted, the relative position of the outer sleeve 51 and the middle sleeve 53 can be locked and fixed by the locking component 7. Next, the inner sleeve 56 is pulled out. The second guide groove 57 on the outer wall of the inner sleeve 56 slides along the second guide block 55 on the inner wall of the middle sleeve. Similarly, the second guide block 55 restricts the circumferential deflection of the inner sleeve. After the extension length of the inner sleeve 56 is adjusted, the relative position of the inner sleeve 56 and the middle sleeve 53 can be locked and fixed by the locking component 7.

[0051] At the same time, it also ensures that the entire telescopic adjustment process remains in a stable guiding state, avoiding circumferential deflection between the sleeves that could cause deviations in the probe's 58-degree angle, thus ensuring the accuracy of the three-dimensional flow velocity measurement direction and further improving the reliability of the measurement results.

[0052] In addition, by setting the limiting member 6, the maximum pull-out length of the middle sleeve 53 and the inner sleeve 56 is limited, so as to prevent the middle sleeve 53 and the inner sleeve 56 from completely coming out of the sleeve under the pull of external force, thus ensuring the structural safety of the telescopic adjustment process.

[0053] like Figure 5 As shown, in one embodiment of this application, the limiting member 6 includes a first limiting block 61 and a second limiting block 62.

[0054] The first limiting block 61 is fixed on the inner wall of the first guide groove 54; the second limiting block 62 is fixed on the inner wall of the second guide groove 57.

[0055] Specifically, when the middle sleeve 53 slides to its maximum stroke, the first limiting block 61 on the inner wall of the first guide groove 54 will abut against the first guide block 55 to prevent the middle sleeve 53 from falling out of the outer sleeve 51.

[0056] When the inner sleeve 56 slides to its maximum stroke, the second limiting block 62 on the inner wall of the second guide groove 57 will abut against the second guide block 55 to prevent the inner sleeve 56 from coming out of the middle sleeve 53 and falling.

[0057] like Figure 6 As shown, in one embodiment of this application, the locking component 7 further includes a second limiting post 74 and a third limiting post 78.

[0058] The second limiting post 74 is installed inside the fourth spring 72, and one end of the second limiting post 74 is connected to the middle sleeve 53, while the other end of the second limiting post 74 is connected to the first locking block 73; the third limiting post 78 is installed inside the fifth spring 76, and one end of the third limiting post 78 is connected to the inner sleeve 56, while the other end of the third limiting post 78 is connected to the second locking block 77.

[0059] Specifically, when the worker pulls the middle sleeve 53 outward or pushes it inward into the outer sleeve 51, the first locking block 73 is squeezed by the inner wall of the outer sleeve 51, compressing the fourth spring 72 and causing it to contract inward into the middle sleeve 53, allowing the middle sleeve 53 to slide smoothly. Once the middle sleeve 53 is adjusted to the appropriate position, the first locking block 73 aligns with the corresponding first slot 71, and the fourth spring 72 loses its squeezing force, causing the first locking block 73 to pop out and lock into the corresponding first slot 71, thus completing the locking and fixing of the middle sleeve 53.

[0060] Similarly, when the operator pulls the inner sleeve 56 outward or pushes it inward into the middle sleeve 53, the second locking block 77 is compressed by the inner wall of the middle sleeve 53, causing the fifth spring 76 to contract. After the inner sleeve 56 is in place, the second locking block 77 aligns with the corresponding second locking groove 75, and the fifth spring 76 pops the second locking block 77 into the corresponding second locking groove 75, thus locking and fixing the position of the inner sleeve 56. The operation is simple and can quickly lock at any extension length, preventing the sleeve from sliding or shifting due to external forces during measurement. No additional locking operation is required to fix the position, which is suitable for the adjustment needs of rapid measurement operations and improves the efficiency of on-site operations.

[0061] like Figure 7 As shown, in one embodiment of this application, the probe 58 includes a sphere 581.

[0062] Among them, the sphere 581 is connected to one end of the inner sleeve 56; the outer wall of the sphere 581 is provided with a central hole 582, an upper side hole 583, a lower side hole 584, a left side hole 585 and a right side hole 586 respectively.

[0063] It should be noted that the probe 58 described in this embodiment is a conventional structure disclosed in the prior art. The central hole 582 is used to measure the total pressure in the direction of the incoming flow. The upper hole 583, lower hole 584, left hole 585, and right hole 586 measure the static pressure in the corresponding direction, respectively. The flow velocity in the three-dimensional direction can be calculated by the pressure difference collected by the five pressure holes. In addition, the central hole 582, upper hole 583, lower hole 584, left hole 585, and right hole 586 on the sphere 581 are connected to independent pressure-guiding tubes (not shown in the figure). All pressure-guiding tubes (not shown in the figure) pass through the hollow channels inside the inner sleeve 56, middle sleeve 53, and outer sleeve 51 in sequence and are connected one by one to the multi-channel pressure acquisition interface inside the host (not shown in the figure). The pressure medium collected by each measuring hole can be independently transmitted to the pressure sensor to complete the three-dimensional pressure data acquisition. Since its structure and principle are well known, they will not be described in detail here.

[0064] Specifically, during measurement, the sphere 581 extends into the flow field to be measured, and pressure signals in different directions are collected through five measuring holes. These signals are then transmitted to the back-end processing unit, which can directly calculate the three-dimensional flow velocity data at that location. Omnidirectional flow velocity measurement can be completed without the need for repeated manual adjustment of the probe angle, thus adapting to the rapid measurement needs under different flow field environments.

[0065] like Figure 4 As shown, in one embodiment of this application, the installation mechanism 2 further includes a limiting ring 29.

[0066] Among them, anti-slip grooves 26 are evenly spaced on the outer wall of the sliding sleeve 25; the limiting ring 29 is sleeved on the outer wall of the second connecting pipe 23.

[0067] Specifically, the anti-slip groove 26 increases the friction of the outer wall of the sliding sleeve 25, making it less likely for the operator's hand to slip when pushing the sliding sleeve 25 along the outer wall of the second connecting pipe 23, thus making the operation easier and smoother.

[0068] In addition, the setting of the limiting ring 29 can prevent the sliding sleeve 25 from completely disengaging from the second connecting tube 23 when it slides towards one end of the second connecting tube 23.

[0069] In summary, the portable modular three-dimensional Pitot tube flow velocity automatic measurement device of this application embodiment, through the setting of the mounting mechanism 2, allows the probe 58 to be disassembled and stored in the non-working state, reducing the overall space occupied by the device, avoiding the long probe protruding from the outer wall of the device, making it convenient for operators to carry in a bag or transport by hand, and adapting to the carrying needs of outdoor mobile operations. At the same time, by cooperating with the telescopic mechanism 5, the extension length of the probe 58 can be flexibly adjusted according to the on-site measurement needs, adapting to measurement points at different depths, eliminating the need for operators to prepare measuring rods of corresponding length specifications in advance, further improving the device's adaptability to different measurement scenarios. In addition, in the non-working state, the probe 58 can be retracted to reduce the overall length, further reducing the overall space occupied by the device.

[0070] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0071] In the description of this specification, the references to the terms "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0072] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A portable, modular three-dimensional Pitot tube automatic flow velocity measurement device, characterized in that, It includes a measuring device body (1), a mounting mechanism (2), and a telescopic mechanism (5), wherein, The mounting mechanism (2) is disposed on the outer wall of the main body (1) of the measuring device; The telescopic mechanism (5) is disposed on the outer wall of the mounting mechanism (2); The installation mechanism (2) includes a first connecting pipe (21), a second connecting pipe (23), a first spring (24), a sliding sleeve (25), a moving column (27), and a moving ring (28), wherein, One end of the first connecting pipe (21) is connected to the main body (1) of the measuring device; A fixing groove (22) is provided on the outer wall of the first connecting pipe (21); The second connecting pipe (23) is sleeved on the outer wall of the first connecting pipe (21); The first spring (24) is sleeved on the outer wall of the second connecting pipe (23), and one end of the first spring (24) is connected to the second connecting pipe (23), and the sliding sleeve (25) is connected to the other end of the first spring (24); The movable column (27) is slidably disposed inside the second connecting pipe (23); The movable ring (28) is slidably disposed inside the second connecting tube (23).

2. The portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to claim 1, characterized in that, The mounting mechanism (2) further includes a sealing component (3) and a dustproof component (4), wherein, The sealing assembly (3) is disposed on the inner wall of the second connecting pipe (23); The dustproof component (4) is disposed on the inner wall of the second connecting pipe (23).

3. The portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to claim 2, characterized in that, The sealing assembly (3) includes a second spring (31), a compression plate (32), a sealing ring (33), and a first limiting post (34), wherein, The second spring (31) is disposed inside the second connecting tube (23), and one end of the second spring (31) is connected to the second connecting tube (23), and the extrusion plate (32) is connected to the other end of the second spring (31); The sealing ring (33) is disposed on the outer wall of the extrusion plate (32); The first limiting post (34) is disposed inside the second spring (31), and one end of the first limiting post (34) is connected to the second connecting pipe (23), and the other end of the first limiting post (34) is connected to the extrusion plate (32).

4. The portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to claim 2, characterized in that, The dustproof component (4) includes a retaining ring (41), a third spring (42), and a dustproof net (43), wherein, The fixing ring (41) is fixed on the inner wall of the second connecting pipe (23); The third spring (42) is disposed inside the second connecting tube (23), and one end of the third spring (42) is connected to the fixing ring (41), and the dustproof net (43) is connected to the other end of the third spring (42).

5. The portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to claim 1, characterized in that, The telescopic mechanism (5) includes an outer sleeve (51), a first guide block (52), a middle sleeve (53), a second guide block (55), an inner sleeve (56), a probe (58), a limiting member (6), and a locking assembly (7), wherein, One end of the outer sleeve (51) is connected to one end of the second connecting tube (23); The first guide block (52) is fixed on the inner wall of the second connecting pipe (23); The middle sleeve (53) is slidably disposed on the inner wall of the outer sleeve (51); A first guide groove (54) is provided on the outer wall of the middle sleeve (53); The second guide block (55) is fixed on the inner wall of the middle sleeve (53); The inner sleeve (56) is slidably disposed on the inner wall of the middle sleeve (53); A second guide groove (57) is provided on the outer wall of the inner sleeve (56); The probe (58) is connected to one end of the inner sleeve (56); The limiting member (6) is disposed on the inner wall of the first guide groove (54); The locking assembly (7) is disposed on the inner wall of the outer sleeve (51).

6. The portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to claim 5, characterized in that, The limiting member (6) includes a first limiting block (61) and a second limiting block (62), wherein, The first limiting block (61) is fixed on the inner wall of the first guide groove (54); The second limiting block (62) is fixed on the inner wall of the second guide groove (57).

7. A portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to claim 5, characterized in that, The locking assembly (7) includes a fourth spring (72), a first locking block (73), a fifth spring (76), and a second locking block (77), wherein, Multiple first slots (71) are equally spaced on the inner wall of the outer sleeve (51); The fourth spring (72) is installed inside the middle sleeve (53), and one end of the fourth spring (72) is connected to the middle sleeve (53), and the first locking block (73) is connected to the other end of the fourth spring (72); Multiple second slots (75) are equally spaced on the inner wall of the middle sleeve (53); The fifth spring (76) is installed inside the inner sleeve (56), and one end of the fifth spring (76) is connected to the inner sleeve (56), while the second locking block (77) is connected to the other end of the fifth spring (76).

8. A portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to claim 7, characterized in that, The locking assembly (7) further includes a second limiting post (74) and a third limiting post (78), wherein, The second limiting post (74) is installed inside the fourth spring (72), and one end of the second limiting post (74) is connected to the middle sleeve (53), and the other end of the second limiting post (74) is connected to the first locking block (73); The third limiting post (78) is installed inside the fifth spring (76), and one end of the third limiting post (78) is connected to the inner sleeve (56), and the other end of the third limiting post (78) is connected to the second locking block (77).

9. A portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to claim 5, characterized in that, The probe (58) includes a sphere (581), wherein, The sphere (581) is connected to one end of the inner sleeve (56); The outer wall of the sphere (581) is provided with a central hole (582), an upper hole (583), a lower hole (584), a left hole (585), and a right hole (586).

10. A portable modular three-dimensional Pitot tube flow velocity automatic measurement device according to claim 1, characterized in that, The installation mechanism (2) further includes a limiting ring (29), wherein, Anti-slip grooves (26) are provided at equal intervals on the outer wall of the sliding sleeve (25); The limiting ring (29) is sleeved on the outer wall of the second connecting pipe (23).

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