A structure and processing method for arranging pressure measuring holes on the surface of a slat based on buried pipes

Abstract

The present invention provides a structure and processing method for arranging pressure measuring holes on the surface of a slat based on an embedded pipe form, and relates to the technical field of wind tunnel testing. The arrangement structure of the present invention includes a pressure measuring tube, and the slat is provided with a pressure measuring hole and a wiring groove, the wiring groove is arranged on the opposite side of the pressure measuring surface of the slat, and the pressure measuring tube is installed in the wiring groove along the extension direction of the wiring groove; the first end opening of the pressure measuring hole is located on the pressure measuring surface of the slat, the wiring groove has an initial end and an end, the second end opening of the pressure measuring hole is connected to the pressure measuring tube at a position of the wiring groove close to the initial end, and the axial direction of the pressure measuring hole is perpendicular to the tangent direction of the pressure measuring surface of the slat at the first end opening of the pressure measuring hole; along the initial end to the end of the wiring groove, the corresponding slat thickness gradually increases, and the end of the wiring groove leads to the inside or outside of the slat. The present invention can obtain a more complete pressure distribution of thin-walled components of an aircraft, which is conducive to more accurate evaluation of its aerodynamic performance.

Description

Technical Field

[0001] The invention relates to the technical field of wind tunnel testing, and in particular to an arrangement structure and a processing method of pressure measuring holes on a slat surface based on an embedded pipe form. Background Art

[0002] At present, surface pressure measurement has always been an important means to obtain the aerodynamic characteristics of aircraft in aircraft model tests. Through model flight tests and wind tunnel tests, the surface pressure information of aircraft under different incoming flow conditions can be obtained, providing key data support for aircraft development.

[0003] After research, the inventors found in practice that some surface pressure data of aircraft models are often unable to be obtained, making it difficult to accurately evaluate the aerodynamic performance of the aircraft model. Summary of the invention

[0004] In order to solve the problem that it is difficult to accurately evaluate the aerodynamic performance of an aircraft model, the present application provides a slat surface pressure measuring hole arrangement structure and a processing method based on an embedded pipe form.

[0005] In a first aspect, the present application provides a structure for arranging pressure measuring holes on the surface of a slat based on an embedded pipe form, which adopts the following technical solution:

[0006] A slat surface pressure measuring hole arrangement structure based on buried pipe form, comprising a pressure measuring tube, a pressure measuring hole and a wiring groove on the slat, the wiring groove being arranged on the opposite side of the pressure measuring surface of the slat, the pressure measuring tube being installed in the wiring groove along the extension direction of the wiring groove; the first end opening of the pressure measuring hole is located on the pressure measuring surface of the slat, the wiring groove has an initial end and an end, the second end opening of the pressure measuring hole is located at a position of the wiring groove close to the initial end and is connected to the pressure measuring tube, the axial direction of the pressure measuring hole is perpendicular to the tangent direction of the pressure measuring surface of the slat at the opening of the first end of the pressure measuring hole; along the initial end to the end of the wiring groove, the corresponding thickness of the slat gradually increases, and the end of the wiring groove leads to the inside or outside of the slat.

[0007] Preferably, the pressure measuring tube is provided with an air bleed interface near its end, the air bleed interface is opposite to the second end opening of the pressure measuring hole, and an air bleed space is formed in the wiring groove between the air bleed interface and the second end opening of the pressure measuring hole, and the pressure measuring hole is connected to the pressure measuring tube through the air bleed space.

[0008] Preferably, the length of the air bleed interface is 1.5 to 2 times the outer diameter of the pressure measuring tube.

[0009] Preferably, the air bleed interface is semi-cylindrical in shape.

[0010] Preferably, the air bleed interface is a slope structure formed by beveling the tube end of the pressure measuring tube.

[0011] Preferably, the width and / or depth of the wiring groove are both greater than the outer diameter of the pressure measuring tube, so that a gap is left between the wiring groove and the pressure measuring tube.

[0012] Preferably, the pressure measuring tube and the wiring groove are filled with adhesive material, and the air bleed interface is away from the filling portion of the adhesive material.

[0013] Preferably, the wiring trough includes a main trough body and a sub-trough body, the sub-trough body is connected with the main trough body, and one end of the main trough body away from the sub-trough body leads to the inside or outside of the slat, and the pressure measuring tube includes a first pipe section and a second pipe section, and the second pipe section is connected with the first pipe section; the first pipe section is installed in the main trough body, the second pipe section is installed in the sub-trough body, and the air bleed interface is arranged at one end of the second pipe section away from the first pipe section, and one end of the first pipe section away from the second pipe section leads to the inside or outside of the slat along the main trough body.

[0014] Preferably, the outer diameter of the pressure measuring tube is the same as the diameter of the pressure measuring hole.

[0015] In a second aspect, the present application provides a method for processing a slat surface pressure measuring hole arrangement structure based on an embedded pipe form, and processing the above-mentioned slat surface pressure measuring hole arrangement structure based on an embedded pipe form comprises the following steps:

[0016] Milling out the slat and the wiring groove, wherein the milling direction of the wiring groove is from the side with smaller thickness of the slat to the side with larger thickness of the slat;

[0017] Processing pressure measuring holes on the slats;

[0018] Annealing the piezometer tube and processing the piezometer tube by wire cutting;

[0019] Install the pressure measuring tube in the wiring trough and fill the gap between the pressure measuring tube and the wiring trough;

[0020] Check the air tightness and air permeability between the installed pressure measuring tube and the pressure measuring hole.

[0021] The present invention has the following advantages and beneficial effects:

[0022] The wiring trough is set on the back of the pressure measuring surface of the slat and extends from the area with smaller thickness to the area with gradually increasing thickness, so that the wiring trough can be arranged in the area with limited space. This layout method avoids the dependence on the cover plate or supporting structure and effectively solves the problem of arranging the pressure measuring holes of thin-walled parts.

[0023] Furthermore, the wiring trough designed in this application extends from the side with smaller thickness to the side with larger thickness of the slat, and runs through different thickness change areas, ensuring that the wiring trough extends smoothly in the thin-walled area. This can flexibly adapt to the complex configuration of the slat or other thin-walled components without the need for additional thickening of the model structure, thereby retaining the true geometric characteristics of the model and avoiding the impact of thickening or modification on the aerodynamic characteristics. At the same time, the pressure measuring tube is pre-buried in the wiring trough on the back of the pressure measuring hole, and does not need to be arranged inside the model, reducing the requirements for installation space.

[0024] This application avoids the problem of bending the pressure measuring tube near the pressure measuring hole in the traditional solution, and further reduces the requirement for installation space. Therefore, it can better solve the problem of arranging the thin-walled position and component pressure measuring holes of the aircraft scale model, so that the aerodynamic performance can also be effectively evaluated at the thin-walled components of the aircraft, thereby improving the accuracy of the evaluation of aerodynamic performance.

[0025] In addition, the preferred technical solution of the present invention also has the following beneficial effects:

[0026] The end of the pressure measuring tube of the present invention connected to the pressure measuring hole is designed as a semi-cylindrical or beveled air bleed joint, and the air bleed joint is arranged facing the pressure measuring hole, which is not only conducive to the transmission of pressure signals, but also can effectively prevent the filling material from clogging the pressure measuring tube. At the same time, the need for complex bending and routing is reduced, and the accuracy of aerodynamic performance test evaluation and the efficiency of data collection are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 is a schematic diagram of a slat structure of some embodiments of the present application;

[0029] Figure 2 is a partial schematic diagram for illustrating a slat arrangement structure in some embodiments of the present application;

[0030] Figure 3 is a partial perspective view for showing the slat arrangement structure of some embodiments of the present application;

[0031] Figure 4 is a partial cross-sectional view for showing the arrangement structure of the slats in some embodiments of the present application;

[0032] Figure 5 yes Figure 4 A magnified view of part A in FIG.

[0033] Figure 6 This is a partial schematic diagram of some embodiments of the present application for showing the air bleed interface Figure 1 ;

[0034] Figure 7 This is a partial schematic diagram of some embodiments of the present application for showing the air bleed interface Figure 2 ;

[0035] Figure 8 It is a schematic diagram for showing the positional relationship of wiring troughs, pressure measuring holes and pressure measuring tubes in some embodiments of the present application.

[0036] The markings in the figure are:

[0037] 100, slat; 110, pressure measuring hole; 120, wiring trough; 121, main trough body; 122, sub-trough body; 200, pressure measuring tube; 210, air bleed interface; 220, first pipe section; 230, second pipe section; 300, air bleed space. DETAILED DESCRIPTION

[0038] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0039] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0040] In the related technology, surface pressure measurement has always been an important means to obtain the aerodynamic characteristics of aircraft in aircraft model tests. Through model flight tests and wind tunnel tests, the surface pressure information of aircraft under different incoming flow conditions can be obtained, providing key data support for aircraft development. Taking wind tunnel tests as an example, aircraft are generally scaled into models according to a certain ratio. The traditional arrangement method of pressure measuring holes is: 1. For components with larger space such as the fuselage, pressure measuring holes can be drilled directly on the surface of the model, and then metal pressure measuring tubes are installed at the pressure measuring hole positions inside the model, and the pressure signals are led out using the pressure measuring tubes; 2. For components such as wings and tail wings, the internal space is limited and the pressure measuring tubes cannot be directly installed. At this time, part of the model pressure measuring position needs to be processed into the form of a cover plate, a wiring groove is reserved under the cover plate, and the pressure measuring holes are processed on the cover plate. Finally, the pressure measuring tube and the cover plate are installed on the model body, and the pressure measuring tube is led out through the wiring groove.

[0041] However, during the actual test, the applicant found that even if the second method is used, it is still unable to effectively solve the problem of arranging the pressure measuring holes in narrow spaces and thin-walled components. The reason is that the cover plate itself has a certain thickness. Considering the material characteristics, the pressure measuring tube needs to be bent 90° at a certain radius below the pressure measuring hole, which will increase the installation space requirements of the pressure measuring tube. Finally, the installation of the pressure measuring tube generally requires a component thickness greater than 5mm.

[0042] Furthermore, taking the leading edge slat of the high-lift configuration of the aircraft scale model as an example, the part with a thickness of less than 5 mm accounts for a considerable proportion of the entire slat, and it is impossible to arrange the pressure measuring holes using the above two conventional methods. More importantly, such thinner parts often determine the aerodynamic characteristics of the entire model. If the arrangement problem of the pressure measuring holes is not solved, its surface pressure data cannot be obtained, and it is difficult to accurately evaluate the overall aerodynamic performance of the model.

[0043] Based on this, the present application provides a slat surface pressure measuring hole arrangement structure and processing method based on buried tube form. Through the arrangement structure and processing method, the pressure measuring tube can be led from the thin-walled part of the slat to the relatively thick part of the slat. There is no need to arrange it inside the slat, thus reducing the requirements for installation space and can better solve the problem of arranging the thin-walled positions and component pressure measuring holes of the aircraft scale model.

[0044] Please refer to Figure 1 to Figure 8In some embodiments, a pressure measuring hole arrangement structure on the surface of a slat based on an embedded pipe form includes a pressure measuring tube 200, a pressure measuring hole 110 and a wiring groove 120 on the slat 100, the wiring groove 120 is arranged on the opposite side of the pressure measuring surface of the slat 100, and the pressure measuring tube 200 is installed in the wiring groove 120 along the extension direction of the wiring groove 120. Exemplarily, the slat 100 is made of 7075 aluminum alloy, which has a compact structure and strong corrosion resistance, and is best for aviation and marine plates. Of course, the slat 100 can also be made of other metal materials, such as 30CrMnSiA. Further, the pressure measuring tube 200 can be made of 304 stainless steel.

[0045] At the same time, the first end opening of the pressure measuring hole 110 is located on the pressure measuring surface of the slat 100, the wiring groove 120 has an initial end and a terminal end, the second end opening of the pressure measuring hole 110 is located near the initial end of the wiring groove 120 and is connected to the pressure measuring tube 200, and the axial direction of the pressure measuring hole 110 is perpendicular to the tangent direction of the pressure measuring surface of the slat 100 at the first end opening of the pressure measuring hole 110. Exemplarily, the shape of the pressure measuring hole 110 is linear. Further, along the initial end of the wiring groove 120 to the terminal end of the wiring groove 120, the corresponding thickness of the slat 100 gradually increases, and the terminal end of the wiring groove 120 leads to the inside or outside of the slat 100. It is worth noting that the end of the wiring trough 120 leading to the inside or outside of the slat 100 refers to the extension direction of the wiring trough 120. As long as the wiring trough 120 extends from the side of the slat 100 with a smaller thickness to the side of the slat 100 with a larger thickness, the end of the wiring trough 120 can be adaptively arranged and extended according to the actual pressure measurement conditions.

[0046] After the above arrangement, the wiring groove 120 is arranged on the back of the pressure measuring surface of the slat 100, and extends from the area with a smaller thickness to the area with a gradually increasing thickness, so that the wiring groove 120 can be arranged in an area with limited space. This layout method avoids dependence on a cover plate or a supporting structure, and effectively solves the problem of arranging the pressure measuring holes 110 of thin-walled components.

[0047] Furthermore, the wiring groove 120 designed in the present application extends from the side with smaller thickness to the side with larger thickness of the slat 100, and runs through different thickness change areas, ensuring that the wiring groove 120 smoothly extends in the thin-walled area. In this way, it can flexibly adapt to the complex configuration of the slat 100 or other thin-walled parts, without the need for additional thickening of the model structure, thereby retaining the real geometric characteristics of the model and avoiding the impact on the aerodynamic characteristics due to thickening or modification.

[0048] At the same time, since the wiring groove 120 is arranged on the back of the slat 100 and is coordinated with the geometric configuration of the slat 100, the installation process of the pressure measuring tube 200 is more convenient. During assembly, the pressure measuring tube 200 can naturally extend along the wiring groove 120 to the thicker part of the slat 100, reducing the need for complex bending and wiring, and improving the efficiency of test preparation and data collection. In this case, in the pressure measurement on the surface of the slat 100, the thin-walled part of the slat 100 can achieve pressure data measurement through the above arrangement, which is beneficial to obtain more complete surface pressure data of the aircraft model.

[0049] In some embodiments, in combination Figure 4 , Figure 5 The pressure measuring tube 200 is provided with an air bleed interface 210 near its end, and the air bleed interface 210 is directly opposite to the second end opening of the pressure measuring hole 110. An air bleed space 300 is formed between the air bleed interface 210 and the second end opening of the pressure measuring hole 110 in the wiring groove 120, and the pressure measuring hole 110 is connected to the pressure measuring tube 200 through the air bleed space 300.

[0050] In this way, the pressure measuring tube 200 is provided with an air bleed interface 210 at the end, which is directly opposite to the second end opening of the pressure measuring hole 110, forming a channel for the air bleed interface 210 to be directly connected with the pressure measuring hole 110, so that the pressure signal can be more directly transmitted from the pressure measuring hole 110 to the pressure measuring tube 200. In the wiring groove 120, the area between the air bleed interface 210 and the second end opening of the pressure measuring hole 110 forms an air bleed space 300. This design makes the air bleed space 300 more sufficient, thereby effectively reducing the measurement error caused by air flow disturbance or local flow instability.

[0051] The specific effects are reflected in several aspects: First, by setting the air bleed space 300, the direct transmission of the pressure signal is prevented from being affected by the inner wall of the pipeline, the bending of the pressure measuring tube 200 or other factors, which helps to maintain the stability and accuracy of the pressure measurement data.

[0052] Secondly, thanks to the arrangement of the air bleed interface 210 facing the second end opening of the pressure measuring hole 110, the transmission path of the pressure signal is short and direct. This design reduces the attenuation or distortion that may occur during signal transmission and improves the measurement sensitivity.

[0053] Thirdly, the bleed air space 300 is set up at the bleed air interface 210 near the end of the pressure measuring tube 200, which not only solves the problem of pressure loss in the bending area in the traditional method, but also enhances the adaptability of the pressure measuring tube 200 under different aerodynamic conditions, and can provide a consistent pressure transmission effect regardless of whether it is in a high-speed and low-pressure or low-speed and high-pressure flow environment. This arrangement not only improves the measurement accuracy of thin-walled parts on the surface of the slat 100, but also provides reliable data support for the evaluation of aircraft aerodynamic performance in complex aerodynamic environments.

[0054] Overall, this arrangement structure of pressure measuring holes on the slat surface based on buried pipes, through the arrangement of the bleed air interface 210 and the bleed air space 300, enables the pressure measuring system to have measurement accuracy while ensuring its compact structure, and increases the number of pressure measuring points on the aircraft thin-walled parts. After adopting this method, more accurate aerodynamic characteristics can be obtained through aircraft surface pressure measurement, providing key data guarantee for subsequent aerodynamic design optimization.

[0055] Exemplarily, the length of the bleed air interface 210 is 1.5 to 2 times the outer diameter of the pressure measuring tube 200. This arrangement ensures that the length of the bleed air interface 210 is sufficient to form a stable bleed air space 300 during operation, reduces the distortion of the pressure value in the pressure measuring tube 200, and takes into account the overall installation convenience and structural strength of the pressure measuring tube 200. This reasonable length range design can improve the applicability of the pressure measuring structure in the thin-walled area of ​​the slat 100, so that accurate pressure data can be obtained, providing reliable experimental support for the evaluation and optimization design of the aerodynamic characteristics of the aircraft.

[0056] For example, see Figure 6 , the shape of the air bleed interface 210 is semi-cylindrical. Exemplarily, a straight cut is made in the middle of the pressure measuring tube 200 along the axial direction of the pressure measuring tube 200, and the straight cut is stopped after the length is 1.5 to 2 times the outer diameter of the pressure measuring tube 200, and the straight cut is made again along the radial direction of the pressure measuring tube 200, thereby forming a semi-cylindrical air bleed interface 210, making the processing of the air bleed interface 210 more convenient.

[0057] For example, see Figure 7 The air bleed interface 210 is a slope structure formed by chamfering the end of the pressure measuring tube 200. Of course, the air bleed joint of the pressure measuring tube 200 is not limited to the above-specified shape, and can also have other shapes, such as V-shaped groove shape, hemispherical shape, etc.

[0058] In some embodiments, in combination Figure 4 , Figure 5, the width and / or depth of the wiring groove 120 are greater than the outer diameter of the pressure measuring tube 200, so that there is a gap between the wiring groove 120 and the pressure measuring tube 200. Such a configuration allows the pressure measuring tube 200 to be directly placed in the wiring groove 120 when arranged in the wiring groove 120, and to a certain extent avoids the situation where the pressure measuring tube 200 cannot be placed in the wiring groove 120. Exemplarily, an adhesive material is filled between the pressure measuring tube 200 and the wiring groove 120, and the air bleed interface 210 is away from the filling part of the adhesive material. Exemplarily, the adhesive material can be selected from epoxy resin.

[0059] In this way, the adhesive material is filled between the wiring groove 120 and the pressure measuring tube 200. Fixing the pressure measuring tube 200 in this way can ensure that the pressure measuring tube 200 maintains a stable installation position during the test. In addition, the design of the position of the bleed air interface 210 away from the filling part of the adhesive material can ensure that the opening area of ​​the bleed air interface 210 remains unobstructed and is not interfered by the adhesive material, thereby maintaining the integrity of the bleed air space 300 and the patency of the bleed air path, reducing the probability of blockage in the pressure measuring system and the inability to transmit the pressure signal. The design of this structure not only improves the installation flexibility and measurement stability of the arrangement structure of the pressure measuring holes 110 on the surface of the slat 100, but also takes into account the requirements for structural strength and aerodynamic characteristics, providing reliable support for high-precision wind tunnel test data.

[0060] In some embodiments, in combination Figure 2 , Figure 8 The wiring slot 120 includes a main slot body 121 and a sub-slot body 122, the sub-slot body 122 is connected to the main slot body 121, and one end of the main slot body 121 away from the sub-slot body 122 leads to the inside or outside of the slat 100. The pressure measuring tube 200 includes a first pipe section 220 and a second pipe section 230, and the second pipe section 230 is connected to the first pipe section 220.

[0061] At the same time, the first pipe section 220 is installed in the main slot body 121, the second pipe section 230 is installed in the sub-slot body 122, and the air bleed interface 210 is arranged at one end of the second pipe section 230 away from the first pipe section 220, and the end of the first pipe section 220 away from the second pipe section 230 leads to the inside or outside of the slat 100 along the main slot body 121.

[0062] Furthermore, one or more sub-slot bodies 122 are provided. For example, if multiple sub-slot bodies 122 are provided, the multiple sub-slot bodies 122 are all connected to one main slot body 121, and the first pipe sections 220 corresponding to the multiple pressure measuring tubes 200 are all extended into the same main slot body 121. However, it should be noted that the multiple pressure measuring tubes 200 are independent of each other and not connected. In the present application, after multiple pressure measuring tubes 200 are provided, in order to reduce the number of slots in the aircraft model, the first pipe sections 220 of the multiple pressure measuring tubes 200 are arranged in the same main slot body 121 at the same time, but are not connected at the same time. At the same time, it should be noted that one pressure measuring hole 110 corresponds to an independent and complete pressure measuring tube 200.

[0063] On this basis, the main tank body 121 is responsible for the arrangement of the first pipe section 220 in all nearby pressure measuring tubes 200, while the sub-tank body 122 is used for the installation of the second pipe section 230, so that multiple sub-tank bodies 122 are added on the basis of the main tank body 121, so that multiple pressure measuring points can be flexibly arranged to achieve multi-point pressure measurement.

[0064] In addition, one end of the main slot body 121 away from the sub-slot body 122 leads to the inside or outside of the slat 100, and the first pipe section 220 extends to the inside or outside of the slat 100 accordingly, so that multiple pressure measuring tubes 200 share one wiring groove. This structure mainly reduces the number of model slots, reduces processing costs, and facilitates wiring.

[0065] In summary, through the multi-channel layout in which the sub-slot body 122 is connected to the main slot body 121, multiple sub-slot bodies 122 and second pipe sections 230 can be arranged according to test requirements, allowing multi-point distribution in the required pressure measurement area. This ability to collect pressure signals at multiple points is of great significance for testing the complex aerodynamic environment on the surface of the slat 100, and can capture more pressure data.

[0066] This design significantly improves the flexibility and applicability of the pressure measurement system. It can provide stable measurement results in both single-point and multi-point pressure measurements, while taking into account the convenience of installation and the compactness of the structure. It provides high-spatial-resolution data support for the analysis of aircraft aerodynamic characteristics, and thus provides key technical support for data analysis of wind tunnel tests and subsequent aircraft design optimization.

[0067] In some embodiments, the outer diameter of the pressure measuring tube 200 is the same as the diameter of the pressure measuring hole 110. The design that the outer diameter of the pressure measuring tube 200 is the same as the diameter of the pressure measuring hole 110 effectively ensures the consistency and accuracy of the pressure signal during the transmission process, so that the continuity of the flow channel can be maintained when the pressure is transmitted from the pressure measuring hole 110 to the pressure measuring tube 200. This design also puts fewer restrictions on the arrangement and installation of the pressure measuring tube 200, and can be more flexibly arranged in different areas of the surface of the slat 100.

[0068] See also Figure 1 to Figure 8 The embodiment of the present application further discloses a method for processing a slat surface pressure measuring hole arrangement structure based on an embedded pipe form, and processing the slat surface pressure measuring hole arrangement structure based on an embedded pipe form in some of the above embodiments comprises the following steps:

[0069] Milling out the slat 100 and the wiring groove 120, wherein the milling direction of the wiring groove 120 is from the side with a smaller thickness of the slat 100 to the side with a larger thickness of the slat 100;

[0070] A pressure measuring hole 110 is machined on the slat 100;

[0071] Annealing the pressure measuring tube 200 and processing the pressure measuring tube 200 by wire cutting;

[0072] The pressure measuring tube 200 is installed in the wiring groove 120, so that the opening surface of the air bleed joint faces the end opening of the pressure measuring hole 110, and the gap between the pressure measuring tube 200 and the wiring groove 120 is filled with epoxy resin, and then the slat 100 is left stationary to wait for the filling material to dry;

[0073] Check the air tightness and air permeability between the installed pressure measuring tube 200 and the pressure measuring hole 110. A precision pressure gauge can be used for measurement. After confirmation, sandpaper is used to grind the filling material of the wiring groove 120 until it is flat.

[0074] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A structure for arranging pressure measuring holes on the surface of a slat based on an embedded pipe, characterized in that: It comprises a pressure measuring tube (200), the slat (100) is provided with a pressure measuring hole (110) and a wiring groove (120), the wiring groove (120) is arranged on the back side opposite to the pressure measuring surface of the slat (100), and the pressure measuring tube (200) is installed in the wiring groove (120) along the extension direction of the wiring groove (120); The first end opening of the pressure measuring hole (110) is located on the pressure measuring surface of the slat (100); the wiring groove (120) has an initial end and an end; the second end opening of the pressure measuring hole (110) is located at a position of the wiring groove (120) close to the initial end and is connected to the pressure measuring tube (200); the axial direction of the pressure measuring hole (110) is perpendicular to the tangent direction of the pressure measuring surface of the slat (100) at the first end opening of the pressure measuring hole (110); Along the initial end of the wiring groove (120) to the end of the wiring groove (120), the thickness of the corresponding slat (100) gradually increases, and the end of the wiring groove (120) leads to the inside or outside of the slat (100); The pressure measuring tube (200) is provided with an air bleed interface (210) near its end, and the air bleed interface (210) is directly opposite to the second end opening of the pressure measuring hole (110). An air bleed space (300) is formed in the wiring groove (120) between the air bleed interface (210) and the second end opening of the pressure measuring hole (110), and the pressure measuring hole (110) is connected to the pressure measuring tube (200) through the air bleed space (300).

2. The arrangement structure of pressure measuring holes on the slat surface based on buried pipes according to claim 1 is characterized in that: The length of the air bleed interface (210) is 1.5 to 2 times the outer diameter of the pressure measuring tube (200).

3. The arrangement structure of pressure measuring holes on the slat surface based on buried pipes according to claim 1 is characterized in that: The air bleed interface (210) is in a semi-cylindrical shape.

4. The arrangement structure of pressure measuring holes on the slat surface based on buried pipes according to claim 1 is characterized in that: The air bleed interface (210) is an inclined surface structure formed by beveling the end of the pressure measuring tube (200).

5. The arrangement structure of pressure measuring holes on the slat surface based on buried pipes according to any one of claims 1 to 4, characterized in that: The width and / or depth of the wiring groove (120) are both greater than the outer diameter of the pressure measuring tube (200), so that a gap is left between the wiring groove (120) and the pressure measuring tube (200).

6. The arrangement structure of pressure measuring holes on the slat surface based on buried pipes according to claim 5 is characterized in that: An adhesive material is filled between the pressure measuring tube (200) and the wiring groove (120), and the air bleed interface (210) is away from the filling position of the adhesive material.

7. The arrangement structure of pressure measuring holes on the slat surface based on buried pipes according to claim 6 is characterized in that: The wiring trough (120) comprises a main trough body (121) and a sub-trough body (122), the sub-trough body (122) being connected to the main trough body (121), one end of the main trough body (121) away from the sub-trough body (122) leading to the inside or outside of the slat (100), the pressure measuring tube (200) comprising a first tube section (220) and a second tube section (230), the second tube section (230) being connected to the first tube section (220); The first pipe section (220) is installed in the main slot body (121), the second pipe section (230) is installed in the sub-slot body (122), and the bleed air interface (210) is provided at an end of the second pipe section (230) away from the first pipe section (220), and an end of the first pipe section (220) away from the second pipe section (230) leads to the inside or outside of the slat (100) along the main slot body (121).

8. The arrangement structure of pressure measuring holes on the slat surface based on buried pipes according to claim 1 is characterized in that: The outer diameter of the pressure measuring tube (200) is the same as the diameter of the pressure measuring hole (110).

9. A method for processing a slat surface pressure measuring hole arrangement structure based on an embedded pipe form, characterized in that: Processing the arrangement structure of pressure measuring holes on the surface of the slat based on the buried pipe form according to any one of claims 1 to 8 comprises the following steps: Milling out the slat (100) and the wiring groove (120), wherein the milling direction of the wiring groove (120) is from the side with a smaller thickness of the slat (100) to the side with a larger thickness of the slat (100); A pressure measuring hole (110) is machined on the slat (100); Annealing the pressure measuring tube (200) and processing the pressure measuring tube (200) by wire cutting; Installing the pressure measuring tube (200) in the wiring groove (120), and filling the gap between the pressure measuring tube (200) and the wiring groove (120); The air tightness and air permeability between the installed pressure measuring tube (200) and the pressure measuring hole (110) are tested.

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