Calibration mounting method for a miniature dynamic pressure sensor

Abstract

This invention discloses a calibration and installation method for a miniature dynamic pressure sensor. The method involves passing the lower end of the sensor to be calibrated through a clamping member; installing a sleeve on the portion of the sensor exposed below the clamping member; placing a docking support on a flat surface; and inserting the clamping member, sensor, and sleeve together into the docking support from top to bottom; adjusting the overall height of the clamping member, sensor, and sleeve so that the sensor's outlet end face is flush with the outlet at the bottom of the docking support; and connecting the docking support to a calibration device for calibration. This invention provides a calibration and installation method for a miniature dynamic pressure sensor to solve the calibration problems of miniature dynamic pressure sensors in the prior art, achieving efficient and rapid calibration and installation of miniature dynamic pressure sensors, improving operability and repeatability, and reducing the probability of sensor damage during calibration.

Description

Technical Field

[0001] This invention relates to the field of metrology, and more specifically to a calibration and installation method for a miniature dynamic pressure sensor. Background Technology

[0002] Dynamic pressure sensors are widely used in defense, petrochemical, and aerospace fields due to their numerous advantages. They are particularly favored in dynamic pressure experiments such as explosion impact, shock wave rupture, and supersonic wind tunnel blowing. To ensure the reliability of test data in dynamic environments, dynamic pressure sensors must be dynamically calibrated.

[0003] Commonly used dynamic pressure sensor calibration devices include shock tube-based low-pressure dynamic pressure calibration devices, sinusoidal dynamic pressure calibration devices, and resonant sinusoidal pressure signal generators. Because there are many types of dynamic pressure sensors, such as those from brands like Kulite and Endevco commonly used in supersonic wind tunnel testing, and these sensors vary in size, it is necessary to design matching calibration fixtures to facilitate the connection and installation between the dynamic pressure sensor and the calibration device when performing dynamic calibration on a specific sensor.

[0004] When applied to dynamic pressure measurements in supersonic wind tunnel experiments, the external dimensions of the dynamic pressure sensor significantly impact the measurement results. Therefore, theoretically, miniature dynamic pressure sensors should be prioritized when selecting the type of dynamic pressure sensor. Currently, the most commonly used miniature dynamic pressure sensors have an outer diameter of approximately 2 mm. Due to their small size, these sensors significantly complicate the design of calibration fixtures. Consequently, existing technologies suffer from shortcomings in terms of the operability, repeatability, and damage resistance of the sensor during docking and installation with the calibration fixture. This results in high calibration difficulty, low efficiency, and a high failure rate for miniature dynamic pressure sensors. Summary of the Invention

[0005] This invention provides a calibration and installation method for a miniature dynamic pressure sensor, which solves the calibration problem of miniature dynamic pressure sensors in the prior art, realizes efficient and quick calibration and installation of miniature dynamic pressure sensors, improves operability and repeatability, and reduces the probability of sensor damage during calibration.

[0006] This invention is achieved through the following technical solution:

[0007] A calibration and installation method for a miniature dynamic pressure sensor, comprising:

[0008] Pass the lower end of the sensor to be calibrated through a clamping device;

[0009] A sleeve is installed on the portion of the sensor exposed below the clamping component;

[0010] Place a docking support on a flat surface, and then insert the clamping component, along with the sensor and sleeve, into the docking support from top to bottom.

[0011] Adjust the overall height of the clamping parts, sensor, and sleeve so that the sensor outlet end face is flush with the outlet at the bottom of the docking support;

[0012] Connect the docking support to the calibration device.

[0013] To address the problems of low operability, poor repeatability, and easy damage to sensors during the calibration process of existing miniature dynamic pressure sensors, this invention proposes a calibration and installation method for miniature dynamic pressure sensors. This method first involves passing the lower end of the miniature dynamic pressure sensor to be calibrated through a clamping member, exposing a portion of the sensor below the clamping member. Then, a sleeve is installed at the exposed portion, covering the sensor. At this point, the clamping member, sensor, and sleeve together form a single integrated structure. Next, a docking support is placed on a flat surface, and the aforementioned integrated structure is installed into the docking support from top to bottom, gradually adjusting the height of the integrated structure until the sensor outlet end face is flush with the outlet at the bottom of the docking support. Finally, the docking support is connected to the calibration device, and the calibration operation can then be performed.

[0014] This application significantly improves the operability and efficiency of calibrating miniature dynamic pressure sensors by using clamping components, docking supports, and sleeves. Furthermore, after calibrating one sensor, the same method can be used to calibrate the next sensor, resulting in extremely high repeatability. In addition, the sleeves and clamping components jointly protect the sensor, preventing direct connection between the sensor and the docking support or calibration device. This effectively reduces the risk of damage to the miniature dynamic pressure sensor during calibration, thus possessing significant economic value.

[0015] It should be noted that the calibration device used in this application to connect with the docking support can be any existing calibration device used for pressure sensor calibration, and there is no limitation here.

[0016] Furthermore, the sleeve is inserted from bottom to top onto the sensor from the sensor outlet end. During the execution of this method, the upper end of the sensor should be located inside the clamping member; therefore, the sleeve is inserted from bottom to top onto the sensor to ensure sufficient protection of the exposed part of the sensor.

[0017] Furthermore, the number of sleeves is greater than or equal to two, and a rubber ring is installed on the sensor between two adjacent sleeves. The specific number of sleeves is determined by the length of the sensor; the rubber ring is also fitted onto the miniature dynamic pressure sensor and located between any two adjacent sleeves, serving to position, seal, and provide flexible cushioning.

[0018] Furthermore, the clamping component and the docking support are connected by threads, and the overall height of the clamping component, sensor, and sleeve is adjusted by the threads. In this solution, the clamping component is screwed into the docking support via threads. Since the sensor and sleeve have already been pre-installed on the clamping component, the sensor and sleeve can be moved synchronously during the screwing-in process. By controlling the position of the screw-in thread, the overall height can be adjusted.

[0019] Furthermore, methods for aligning the sensor outlet face with the outlet at the bottom of the docking support include:

[0020] The entire assembly consisting of the drive clamping component, sensor, and sleeve moves downward until the sensor outlet face is about to reach the outlet at the bottom of the docking support;

[0021] The docking support is lifted off the flat surface, and the clamping parts, sensor and sleeve are driven to move downward as a whole until the sensor outlet end face protrudes out of the outlet at the bottom of the docking support;

[0022] Gently push the sensor outlet face upwards until it is flush with the outlet of the docking support.

[0023] The sensor outlet face protrudes beyond the outlet at the bottom of the docking support. This can be understood as the sensor outlet face extending just beyond the docking support from the bottom. This application does not limit the length of the protrusion.

[0024] Furthermore, using a circular wooden strip with the same outer diameter as the sensor outlet to gently push the sensor outlet end face further reduces the risk of sensor damage.

[0025] Furthermore, the docking support and the calibration device are connected by threads. The main function of the docking support is to connect the calibration device and the sensor to be calibrated; therefore, the use of a threaded connection here can fully ensure the stability and reliability of the connection.

[0026] Furthermore, it also includes performing a disassembly operation after the calibration work is completed. The disassembly operation includes:

[0027] Remove the docking support from the calibration device;

[0028] The entire assembly consisting of the clamping element, sensor, and sleeve is lifted and removed from the docking support.

[0029] Remove the sleeve from the sensor;

[0030] Lift the sensor up to remove it from the clamping part.

[0031] In existing technologies, the disassembly process of miniature dynamic pressure sensors after calibration also carries a significant risk of damage. Therefore, this solution further restricts the disassembly process. First, the docking support is removed from the calibration device. Then, the entire assembly consisting of the clamping component, sensor, and sleeve is lifted and removed from the docking support. Throughout this process, the sensor body is well protected, resulting in a low damage rate. Afterward, the sleeve is removed from the sensor, and the sensor is slowly lifted to remove it from the clamping component.

[0032] As can be seen, the disassembly process after calibration is easy to operate and can be reused immediately after disassembly. Furthermore, the sensor is well protected during disassembly, which can significantly reduce the probability of sensor damage during disassembly after calibration.

[0033] Furthermore, when the number of sleeves is greater than or equal to 2, each sleeve and the rubber ring located between adjacent sleeves are disassembled one by one. That is, the bottommost sleeve, the rubber ring, the second sleeve, and so on are disassembled in sequence, thereby gradually releasing the protection of the sensor so that the sensor can be removed from the clamping member.

[0034] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0035] 1. The present invention provides a calibration and installation method for a miniature dynamic pressure sensor, which effectively solves the calibration problem caused by the small size of the miniature dynamic pressure sensor. It can significantly improve the operability and efficiency of the calibration of the miniature dynamic pressure sensor. Furthermore, after the calibration of one sensor is completed, the same method can be used to calibrate the next sensor, resulting in extremely high repeatability.

[0036] 2. The present invention provides a calibration and installation method for a miniature dynamic pressure sensor, which effectively reduces the risk of damage to the miniature dynamic pressure sensor during the calibration process and has significant economic value.

[0037] 3. The present invention provides a calibration and installation method for a miniature dynamic pressure sensor, which can effectively ensure the installation requirements of the miniature dynamic pressure sensor during the calibration process, while also meeting the sealing performance required for calibration. Attached Figure Description

[0038] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0039] Figure 1This is a schematic diagram of a specific embodiment of the present invention;

[0040] Figure 2 This is a half-sectional view of the docking support in a specific embodiment of the present invention;

[0041] Figure 3 This is a half-sectional view of the clamping component in a specific embodiment of the present invention;

[0042] Figure 4 This is a cross-sectional view of a specific embodiment of the present invention.

[0043] The attached diagram shows the markings and corresponding component names:

[0044] 1-Dating support, 101-Support body, 102-Upper chamber, 103-Lower chamber, 2-Clamping component, 201-Clamping body, 202-Upper channel, 203-Lower channel, 204-Assembly part, 3-Sleeve, 4-Rubber ring, 5-Sensor. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments and accompanying drawings. The illustrative embodiments and descriptions of this invention are for explaining the invention only and are not intended to limit the invention. In the description of this application, it should be understood that the terms "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "high," "low," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application.

[0046] Example 1:

[0047] A calibration and installation method for a miniature dynamic pressure sensor, comprising:

[0048] Pass the lower end of the sensor to be calibrated through a clamping device;

[0049] A sleeve is installed on the portion of the sensor exposed below the clamping component;

[0050] Place a docking support on a flat surface, and then insert the clamping component, along with the sensor and sleeve, into the docking support from top to bottom.

[0051] Adjust the overall height of the clamping parts, sensor, and sleeve so that the sensor outlet end face is flush with the outlet at the bottom of the docking support;

[0052] Connect the docking support to the calibration device and perform the calibration operation.

[0053] Preferably, the sleeve is inserted from the bottom up onto the outside of the sensor from the sensor outlet end.

[0054] Preferably, the number of sleeves is greater than or equal to the number of sleeves, and a rubber ring is provided on the sensor sleeve between two adjacent sleeves.

[0055] Preferably, the clamping member and the docking support are connected by threads, and the overall height of the clamping member, sensor and sleeve is adjusted by the threads.

[0056] Preferably, the method for making the sensor outlet end face flush with the outlet at the bottom of the docking support includes:

[0057] The entire assembly of the drive clamping component, sensor, and sleeve moves downward until the sensor outlet face is about to reach the outlet at the bottom of the mating support;

[0058] The docking support is lifted off the flat surface, and the clamping parts, sensor and sleeve are driven to move downward as a whole until the sensor outlet end face protrudes out of the outlet at the bottom of the docking support;

[0059] Gently push the sensor outlet face upwards until it is flush with the outlet of the docking support.

[0060] Preferably, a circular wooden strip with the same outer diameter as the sensor outlet is used to gently push the sensor outlet end face.

[0061] Preferably, the docking support and the calibration device are connected by threads.

[0062] Example:

[0063] A calibration and installation method for a miniature dynamic pressure sensor, based on an embodiment, further includes a disassembly operation after the calibration is completed. The disassembly operation in this embodiment includes the following steps:

[0064] Remove the docking support from the calibration device;

[0065] The entire assembly consisting of the clamping element, sensor, and sleeve is lifted and removed from the docking support.

[0066] Remove the sleeve from the sensor;

[0067] Lift the sensor up to remove it from the clamping part.

[0068] Example 3:

[0069] A miniature dynamic pressure sensor calibration fixture is provided for performing the method described in Example 1 or Example 2. The fixture is as follows: Figures 1 to 3As shown, it includes a docking support 1 for connecting to a calibration device, a lower chamber 103 formed in the docking support 1, and a clamping member 2 detachably connected to the docking support 1; the clamping member 2 includes an assembly part 204 that is clearance-fitted with the lower chamber 103, an internal channel for the sensor to pass through; and a sleeve 3 that is clearance-fitted in the lower chamber 103.

[0070] The number of sleeves 3 is greater than or equal to 2, and a rubber ring 4 is provided between any two adjacent sleeves 3.

[0071] This fixture can be used for the efficient and quick installation of miniature dynamic pressure sensors, meeting the requirements of operability, repeatability, and sensor damage resistance. After installing the miniature dynamic pressure sensor using this fixture, the docking support 1 can be connected to the dynamic calibration device for efficient calibration of the miniature dynamic pressure sensor.

[0072] Example 4:

[0073] A miniature dynamic pressure sensor calibration fixture, based on Example 3, such as... Figure 2 As shown, the docking support 1 includes a support body 101, and the outer wall of the support body 101 is provided with an external thread for threaded connection with the calibration device.

[0074] The docking support 1 has an upper chamber 102 that communicates with the lower chamber 103; the upper chamber 102 is open at the top, and the lower chamber 103 is open at the bottom. The clamping member 2 is a clamping bolt that matches the docking support 1.

[0075] like Figure 3 As shown, the clamping bolt includes a clamping body 201, which is threadedly connected to the upper chamber 102. The diameter of the upper chamber 102 is larger than the diameter of the lower chamber 103. The internal channels include an upper channel 202 located within the clamping body 201 and a lower channel 203 located within the assembly part 204.

[0076] In a more preferred embodiment, the diameter of the upper channel 202 is larger than the diameter of the lower channel 203. The inner diameter of the sleeve 3 is equal to the diameter of the lower channel 203.

[0077] In this embodiment, there are two sleeves 3, with a rubber ring 4 sandwiched between them.

[0078] Preferred, such as Figure 2 and Figure 4 As shown, the bottom of the lower chamber 103 has an annular step, through which the sensor body can pass. The annular step serves to limit the movement of the sleeve.

[0079] In a more preferred embodiment, a rubber ring 4 is also provided between the lowermost sleeve 3 and the annular step.

[0080] The specific installation process in this embodiment is as follows:

[0081] Step 1: Insert the lower end of the sensor into the upper channel 202 of the clamping bolt and place it in the lower channel 203 of the clamping bolt, keeping most of the sensor body below the lower channel 203 of the clamping bolt. At this time, the sensor body and the lower channel 203 are in clearance fit.

[0082] The second step is to put the first sleeve, the elastic rubber ring, and the second sleeve on the sensor body in sequence.

[0083] The third step is to place the docking support flat on a flat table, insert the entire assembly completed in the second step into the upper and lower chambers of the docking support, and tighten the bolts so that it moves downward through the threads of the upper chamber of the docking support, gradually transmitting the sensor downward through the compression of the sleeve and rubber ring combination.

[0084] Step 4: When the sensor outlet face is about to reach the docking support outlet, lift the entire calibration fixture and continue to tighten the bolts until the sensor outlet face protrudes from the docking support outlet. Then, use a round wooden strip with the same outer diameter as the sensor to gently push the sensor end face upwards and adjust it until the sensor outlet face is flush with the docking support outlet. This completes the sensor installation process.

[0085] After installation in this embodiment, as shown below Figure 4 As shown, it should be noted that Figure 4 Sensor 5 in the image only shows the main body; the connecting part above it is not shown.

[0086] The specific disassembly process in this embodiment is as follows:

[0087] Step 1: Tighten the clamping bolt upwards until the clamping bolt, sensor, sleeve, and elastic ring can be easily lifted upwards.

[0088] The second step is to remove the second sleeve, elastic ring, and first sleeve from the sensor body in sequence.

[0089] The third step is to lift the sensor upwards from the upper channel 202 of the clamping bolt to complete the disassembly process.

[0090] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0091] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Additionally, the term "connection" as used herein, unless otherwise specified, can refer to a direct connection or an indirect connection via other components.

Claims

1. A calibration installation method of a miniature dynamic pressure sensor, characterized in that, a calibration installation method is performed based on a miniature dynamic pressure sensor calibration tool, the miniature dynamic pressure sensor calibration tool comprising a docking support (1) for connecting with a calibration device, a lower chamber (103) opened in the docking support (1), and a compression member (2) detachably connected with the docking support (1); the compression member (2) comprises a fitting part (204) in clearance fit with the lower chamber (103), and an internal passage for the sensor to pass through; and further comprising a sleeve (3) in clearance fit in the lower chamber (103); the calibration installation method comprises: passing a lower end of a sensor to be calibrated through a compression member (2); installing a sleeve (3) outside a part of the sensor exposed below the compression member (2); placing a docking support (1) on a flat surface, and jointly loading the compression member (2), the sensor, and the sleeve (3) from top to bottom into the docking support (1); adjusting the overall height of the compression member (2), the sensor, and the sleeve (3) so that the outlet end surface of the sensor is flush with the outlet at the bottom of the docking support; connecting the docking support (1) with the calibration device.

2. A method of calibrating the installation of a microdynamic pressure sensor according to claim 1, characterized in that The sleeve (3) is sleeved onto the sensor from the outlet end of the sensor.

3. A method of calibrating the installation of a microdynamic pressure sensor according to claim 1, characterized in that The number of the sleeves (3) is greater than or equal to 2, and a rubber ring (4) is provided outside the sensor between two adjacent sleeves (3).

4. The method of claim 1, wherein, The compression member (2) is connected with the docking support (1) through threads, and the overall height of the compression member (2), the sensor, and the sleeve (3) is adjusted through threads.

5. The method of claim 1, wherein, The method for making the outlet end surface of the sensor flush with the outlet at the bottom of the docking support comprises: driving the overall compression member (2), sensor, and sleeve (3) to move downward until the outlet end surface of the sensor is about to reach the outlet at the bottom of the docking support; making the docking support leave the flat surface, and continuing to drive the overall compression member (2), sensor, and sleeve (3) to move downward until the outlet end surface of the sensor protrudes out of the outlet at the bottom of the docking support; gently pushing the outlet end surface of the sensor upward until the outlet end surface of the sensor is flush with the outlet of the docking support.

6. A method of calibrating the installation of a microdynamic pressure sensor according to claim 5, characterized in that A circular wooden stick with the same outer diameter as the outlet of the sensor is used to gently push the outlet end surface of the sensor.

7. The method of claim 1, wherein, The docking support (1) is connected with the calibration device through threads.

8. The method of claim 1, wherein, Further comprising a disassembly operation after the calibration operation is completed.

9. A method of calibrating the installation of a microdynamic pressure sensor according to claim 8, characterized in that The disassembly operation comprises: disassembling the docking support (1) from the calibration device; lifting the overall compression member (2), sensor, and sleeve (3) to take the overall compression member (2), sensor, and sleeve (3) out of the docking support (1); disassembling the sleeve (3) from the sensor; lifting the sensor to take the sensor out of the compression member (2).

10. A method of calibrating the installation of a microdynamic pressure sensor according to claim 9, characterized in that When the number of the sleeves (3) is greater than or equal to 2, each sleeve (3) and the rubber ring (4) between two adjacent sleeves (3) are disassembled one by one.

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