Pipeline installation angle deviation simulation device and test method

Abstract

The application belongs to the technical field of pipeline test and test, and particularly relates to a pipeline installation angle deviation simulation device and a test and test method. The pipeline installation angle deviation simulation device and the test and test method can accurately and conveniently preset an angle deviation for a pipeline within a certain safety margin, realize pressure resistance test, gas pressure leakage test, system pressure test, explosion test and the like of the pipeline under the condition of the preset angle deviation, and conform to actual use conditions of an aircraft pipeline. Therefore, sufficient verification of the application of the aircraft pipeline can be realized.

Description

Technical Field

[0001] This application belongs to the field of pipeline testing technology, specifically relating to a pipeline installation angle deviation simulation device and testing method. Background Technology

[0002] Piping is an important part of aircraft design, and it is widely used in hydraulic, fuel, lubricating oil and other systems. It can transmit oil and other fluids to various systems, and its performance has an important impact on aircraft performance.

[0003] The performance tests of pipelines mainly include pressure resistance, air pressure leakage, constant stress bending fatigue, pulse, system pressure, and burst tests. Currently, there are widely recognized assessment and evaluation methods in the industry for these tests.

[0004] In recent years, with increasingly stringent requirements for weight reduction in aircraft piping, low-strength steel pipes have been replaced with high-strength steel pipes and high-strength titanium pipes. The increase in strength has made it difficult to straighten the pipes. Due to the accumulation of various manufacturing and installation tolerances, the phenomenon of stress installation has become serious. Stress installation and use have become the norm in pipe applications.

[0005] Existing technical conditions and test methods have made relatively detailed provisions on aircraft piping specifications, free end length, typical pipe interface forms, as well as test equipment and methods. However, the verification conditions are relatively simple, the test pipes are all straight pipes, and the test installation conditions are all ideal installation conditions, which cannot well simulate the actual application scenarios of aircraft piping.

[0006] There is an angular deviation between the free end and the pipe interface of the aircraft piping. Existing test methods cannot quantitatively simulate the angular deviation of the piping installation, resulting in insufficient application verification of aircraft piping.

[0007] This application is made in view of the aforementioned technical deficiencies. Summary of the Invention

[0008] The purpose of this application is to provide a pipeline installation angle deviation simulation device and test method, which can accurately and conveniently preset the angle deviation of the pipeline within a certain safety margin, and realize the pressure resistance, air pressure leakage, system pressure, burst test of the pipeline under the preset angle deviation conditions, which conforms to the actual use conditions of aircraft pipelines, thereby achieving full verification of the application of aircraft pipelines.

[0009] The technical solution of this application is:

[0010] On the one hand, a pipeline installation angle deviation simulation device is provided, including a base, a fixed back plate, a fixed interface plate, a deflection slide plate, a deflection back plate, a deflection interface plate, and a servo drive motor;

[0011] The base is fixed on the table.

[0012] The fixed backplate is vertically connected to the base;

[0013] The fixed interface plate is connected to one side of the fixed back plate, and a fixed pipe interface is connected to it. The fixed pipe interface is used to connect one end of the pipe, which is the fixed end of the pipe.

[0014] The deflection slide has a rectangular opening on its side wall. There are two deflection slides, which are arranged opposite each other and are vertically connected to the base via a slide rail. They are perpendicular to the fixed back plate and are located on the side where the fixed back plate connects to the fixed interface plate.

[0015] The deflection backplate is set between the two deflection slides and has a turntable at the bottom. The turntable is installed into a round hole on the base. The two ends of the deflection backplate extend into two rectangular openings and are connected to the two deflection slides by vertical bolts. The bolt holes at both ends of the deflection slides are racetrack-shaped.

[0016] The deflection interface plate is connected to the side of the deflection backplate facing the fixed backplate. It has deflection pipe interfaces and hydraulic pipe interfaces on both sides. The deflection pipe interface passes through the mounting hole opened on the deflection backplate and is used to connect the other end of the pipe, which is the free end of the pipe. The hydraulic pipe interface is connected to the deflection pipe interface and is used to connect to the hydraulic source.

[0017] A servo drive motor is connected to a deflection slide plate, which drives the deflection slide plate to slide, thereby causing the deflection back plate, deflection interface plate and its deflection pipe interface and hydraulic pipe interface to deflect, and also causing another deflection slide plate to slide in the opposite direction. This enables the adjustment of the pipeline installation angle and quantitative simulation of the pipeline installation angle deviation.

[0018] According to at least one embodiment of this application, in the above-mentioned pipeline installation angle deviation simulation device, the base is rectangular and is fixed to the table surface by four anchor bolts.

[0019] The fixed back plate is rectangular and is vertically connected to the base by two bolts;

[0020] The fixed interface plate is rectangular and is connected to the fixed back plate by four bolts.

[0021] The fixing pipe interface is integrally formed on the fixing interface plate, or it can be detachably connected to the fixing interface plate;

[0022] The deflection slide is rectangular and a displacement sensor is installed between it and the base. The displacement sensor is used to monitor the sliding distance of the deflection slide on the base.

[0023] The deflection backplate is rectangular, with the height of its two ends being less than the height of the rectangular opening.

[0024] The deflection interface plate is rectangular and is connected to the side of the deflection back plate facing the fixed back plate by four bolts;

[0025] The deflection tube interface is integrally formed on the deflection backplate, or it can be detachably connected to the deflection interface plate.

[0026] According to at least one embodiment of this application, in the above-mentioned pipeline installation angle deviation simulation device, the fixed pipe interface and the fixed end of the pipeline are connected by an outer nut and have a conical sealing contact.

[0027] The deflection pipe interface is connected to the free end of the pipeline via an outer nut, and the conical surface provides a sealing contact.

[0028] The hydraulic pipe interface is connected to the hydraulic source via a hydraulic hose, and can be connected to the hydraulic hose via an outer nut, with a conical or arc-shaped sealing contact.

[0029] According to at least one embodiment of this application, in the above-mentioned pipeline installation angle deviation simulation device, the bolts connecting the two ends of the deflection back plate to the two deflection slide plates have their heads in the slide grooves opened in the base slide rail grooves and the slide grooves forming openings at the bottom of the base. After the bolts are tightened, they can be secured in the slide grooves to fix the deflection slide plates.

[0030] According to at least one embodiment of this application, in the above-mentioned pipeline installation angle deviation simulation device, there are multiple pairs of bolt holes on the base for connecting the fixed back plate, and the corresponding bolt holes can be selected to connect the fixed back plate to adapt to the length of the pipeline.

[0031] According to at least one embodiment of this application, in the above-mentioned pipeline installation angle deviation simulation device, the part of the deflection pipe interface in the mounting hole is a narrow neck part, and an unstable washer is provided in the mounting hole. The unstable washer is sleeved on the narrow neck part, and the unstable washer is formed by two semi-circular ring structures joined together.

[0032] According to at least one embodiment of this application, in the above-mentioned pipeline installation angle deviation simulation device, the servo drive motor is connected to the ball screw through a coupling, the ball screw is connected to the screw slider and the support block, the screw slider is connected to the deflection slide plate by four bolts, and the support block is supported on the base.

[0033] On the other hand, a pipeline testing method is provided, implemented based on the aforementioned pipeline installation angle deviation simulation device, including:

[0034] Based on the dimensions of the fixed end and free end of the pipeline, select the corresponding size of the fixed pipe interface and deflection pipe interface, and assemble the pipeline installation angle deviation simulation device.

[0035] Under conditions of no installation stress and angular deviation, connect the fixed end and free end of the pipeline to the fixed pipe interface and the deflection pipe interface through the outer nut according to the preset installation torque and installation parameters.

[0036] Release the outer nut between the fixed end and free end of the pipeline and the fixed pipe interface and deflection pipe interface, and ensure conical sealing contact between the fixed end and free end of the pipeline and the fixed pipe interface and deflection pipe interface;

[0037] The deflection slide is driven by a servo drive motor to slide a distance X, where tanθ=2X / L, θ is the preset angle deviation of the pipeline, and L is the initial distance between the centers of the bolt holes at both ends of the two deflection slides that connect to the deflection back plate.

[0038] According to the preset installation torque and installation parameters, connect the fixed end and free end of the pipeline to the fixed pipe interface and the deflection pipe interface through the outer nut, and tighten the bolts connecting the two ends of the deflection back plate to the two deflection slide plates, and fix them in the slide groove to fix the two deflection slide plates.

[0039] The pressure inside the pipeline is supplied and maintained by a hydraulic power source to conduct test experiments.

[0040] According to at least one embodiment of this application, in the above-described pipeline test method, when assembling the pipeline installation angle deviation simulation device, the bolt holes for connecting the fixed back plate to the base are determined according to the length of the pipeline, and the fixed back plate is fixed.

[0041] Before connecting the deflection interface plate to the deflection back plate, first put the unstable washer ring on the narrow neck of the deflection tube interface. When connecting the deflection interface plate to the deflection back plate, the deflection tube interface passes through the mounting hole opened on the deflection back plate, and the unstable washer ring is inserted into the mounting hole.

[0042] Before connecting the two deflecting slides to the base, first install the turntable at the bottom of the deflecting back plate into the round hole on the base. Then, deflect the deflecting back plate and slowly push one deflecting slide into one of the slide rails on the base. At the same time, deflect the deflecting back plate so that the corresponding end of the deflecting back plate fits into the rectangular opening on the deflecting slide. Deflect the deflecting back plate again and slowly push the other deflecting slide into the other slide rail on the base. At the same time, deflect the deflecting back plate so that the corresponding end of the deflecting back plate fits into the rectangular opening on the deflecting slide. Then, connect the two ends of the deflecting back plate to the two deflecting slides with vertical bolts, but do not tighten the bolts.

[0043] According to at least one embodiment of this application, the above-described pipeline testing method involves conducting tests on the pipeline, including pressure resistance, gas pressure leakage, system pressure, and burst testing.

[0044] This application has at least the following beneficial technical effects:

[0045] This invention provides a pipeline installation angle deviation simulation device and testing method, which can accurately and conveniently preset the angle deviation of the pipeline within a certain safety margin, and realize the pressure resistance, air pressure leakage, system pressure, burst test of the pipeline under the preset angle deviation conditions, which conforms to the actual use conditions of aircraft pipelines, thereby enabling full verification of the application of aircraft pipelines. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the structure of the pipeline installation angle deviation simulation device provided in the embodiments of this application;

[0047] Figure 2 This is a schematic diagram of the structure of the base provided in the embodiment of this application;

[0048] Figure 3 This is a schematic diagram of the structure of the fixed backplate, fixed interface plate, and fixed pipe interface provided in the embodiments of this application;

[0049] Figure 4 This is a schematic diagram of the deflection sliding plate provided in an embodiment of this application;

[0050] Figure 5 This is an assembly diagram of the deflection backplate, deflection interface plate, deflection pipe interface, hydraulic pipe interface, and instability washer ring provided in the embodiments of this application.

[0051] Figure 6 This is a schematic diagram of the structure of the deflection backplate, deflection interface plate, deflection pipe interface, hydraulic pipe interface, and instability washer ring provided in the embodiments of this application;

[0052] Figure 7 This is a schematic diagram of the structure of the servo drive motor, coupling, ball screw, screw slider, and support block provided in the embodiments of this application;

[0053] Figure 8 This is a schematic diagram of the assembly process of a deflection slide block provided in an embodiment of this application;

[0054] Figure 9 This is a schematic diagram of the assembly process of the two deflection sliding plates provided in the embodiments of this application;

[0055] in:

[0056] 1-Base; 2-Fixed backplate; 3-Fixed interface plate; 4-Deflection slide plate; 5-Deflection backplate; 6-Deflection interface plate; 7-Servo drive motor; 8-Fixed pipe interface; 9-Pipeline; 10-Displacement sensor; 11-Deflection pipe interface; 12-Hydraulic pipe interface; 13-Hydraulic source; 14-Instability washer; 15-Coupling; 16-Ball screw; 17-Screw slider; 18-Support block.

[0057] To better illustrate this embodiment, some content in the accompanying drawings may be omitted, enlarged, or reduced. They are for illustrative purposes only and should not be construed as limiting the scope of this application. Detailed Implementation

[0058] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, and other related parts can be referred to the general design.

[0059] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The word "comprising" as used in this application description indicates that the concept preceding the word encompasses the concepts listed following the word and their equivalents, without excluding other related concepts.

[0060] Furthermore, the terms indicating location used in the description of this application are only used to indicate relative directions or positional relationships. When the absolute position of the described object changes, its relative positional relationship may also change accordingly. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation" and "connection" used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.

[0061] A device for simulating pipe installation angle deviation includes a base 1, a fixed back plate 2, a fixed interface plate 3, a deflection slide plate 4, a deflection back plate 5, a deflection interface plate 6, and a servo drive motor 7. Figure 1 As shown.

[0062] Base 1 is rectangular and is fixed to the table surface by four anchor bolts, as shown below. Figure 2 As shown.

[0063] The fixed back plate 2 is rectangular and is vertically connected to the base 1 by two bolts.

[0064] The fixed interface plate 3 is rectangular and is connected to one side of the fixed back plate 2 by four bolts. A fixed pipe interface 8 is connected to it, such as... Figure 3 As shown, the fixed pipe interface 8 is used to connect one end of the pipe 9. This end is the fixed end of the pipe 9. It can be connected to the fixed end of the pipe 9 by an outer nut and the conical surface seals the connection.

[0065] The fixed pipe interface 8 can be integrally formed on the fixed interface plate 3. The size of the fixed pipe interface 8 formed on different fixed interface plates 3 is different. The corresponding fixed interface plate 3 can be selected and replaced according to the size of the fixed end of the pipe 9.

[0066] The fixed pipe interface 8 can also be detachably connected to the fixed interface plate 3. The fixed pipe interface 8 of the corresponding size can be selected and replaced on the fixed interface plate 3 according to the size of the fixed end of the pipe 9.

[0067] The deflection slide 4 is rectangular, with rectangular openings on its side walls, such as... Figure 4 As shown, there are two deflection slides 4, which are arranged opposite to each other and are vertically connected to the base 1 via slide rails. They are perpendicular to the fixed back plate 2 and are located on the side where the fixed back plate 2 is connected to the fixed interface plate 3. A displacement sensor 10 is provided between the deflection slide 4 and the base 1. The displacement sensor 10 is used to monitor the sliding distance of the deflection slide 4 on the base 1.

[0068] The deflection backplate 5 is rectangular and is positioned between the two deflection slide plates 4. It has a turntable at the bottom and is installed into a round hole on the base 1. Both ends of the deflection backplate 5 extend into the two rectangular openings. The height of the two ends can be slightly less than the height of the rectangular openings. It is connected to the two deflection slide plates 4 by vertical bolts. The head of the bolt is located in a groove formed in the slide rail groove of the base 1 and the bottom of the base 1. After the bolt is tightened, it can be secured in the groove, fixing the deflection slide plate 4. The bolt holes at both ends of the deflection slide plate 4 are racetrack-shaped.

[0069] The deflection interface plate 6 is rectangular and is connected to the side of the deflection back plate 5 facing the fixed back plate 2 by four bolts. Deflection pipe interfaces 11 and hydraulic pipe interfaces 12 are connected to both sides. Figures 5-6 As shown, the deflection pipe interface 11 passes through the mounting hole opened on the deflection back plate 5 to connect to the other end of the pipe 9, which is the free end of the pipe 9. It can be connected to the free end of the pipe 9 by an outer nut and has a conical sealing contact. The hydraulic pipe interface 12 is connected to the deflection pipe interface 11 and is used to connect to the hydraulic source 13. It can be connected to the hydraulic source 13 by a hydraulic hose and can be connected to the hydraulic hose by an outer nut and has a conical or arc-shaped sealing contact. The hydraulic source 13 is used to supply and maintain the internal pressure of the pipe 9.

[0070] The base 1 has multiple pairs of bolt holes for connecting and fixing the back plate 2. The appropriate bolt holes can be selected to connect the back plate 2 according to the length of the pipe 9.

[0071] The deflection tube interface 11 can be integrally formed on the deflection back plate 5. The size of the deflection tube interface 11 formed on different deflection back plates 5 is different. The appropriate deflection back plate 5 can be selected and replaced according to the size of the free end of the pipe 9.

[0072] The deflection pipe interface 11 can also be detachably connected to the deflection interface plate 6. The deflection pipe interface 11 of the corresponding size can be selected and replaced on the deflection interface plate 6 according to the size of the fixed end of the pipe 9.

[0073] The deflection tube interface 11 is located in the mounting hole, which is a narrow neck. An unstable washer 14 is installed in the mounting hole and is fitted onto the narrow neck. The unstable washer 14 is formed by the joining of two semi-circular ring structures.

[0074] A servo drive motor 7 is connected to a deflection slide plate 4, which drives the deflection slide plate 4 to slide, thereby causing the deflection back plate 5, the deflection interface plate 6 and its deflection pipe interface 11 and hydraulic pipe interface 12 to deflect, and also causing another deflection slide plate 4 to slide in the opposite direction. This enables the adjustment of the installation angle of the pipeline 9, quantitatively simulates the angle deviation of the pipeline installation, and ensures full verification of the application of the aircraft pipeline.

[0075] The bolt holes at both ends of the deflection slide plate 4 are in the shape of a racetrack, which ensures that the bolts connecting the deflection back plate 5 and the deflection slide plate 4 can only reciprocate along the long side of the racetrack-shaped bolt holes, thus achieving a precise correspondence between the linear displacement of the deflection slide plate 4 and the angular displacement of the deflection pipe interface 11.

[0076] Specifically, the servo drive motor 7 can be designed to connect to the ball screw 16 via a coupling 15. A screw slider 17 and a support block 18 are connected to the ball screw 16. The screw slider 17 is connected to the deflection slide plate 4 via four bolts, and the support block 18 is supported on the base 1. Figure 7 As shown, the servo drive motor 7 can drive the ball screw 16 to rotate through the coupling 15, causing the screw slider 17 to slide, which in turn drives the deflection slide plate 4 to slide, thus converting it into the deflection of the deflection tube interface 11. By monitoring the sliding distance of the deflection slide plate 4 through the displacement sensor 10, the deflection angle of the deflection tube interface 11 can be controlled.

[0077] A pipeline testing method, implemented based on the pipeline installation angle deviation simulation device disclosed above, is described in detail below:

[0078] Based on the dimensions of the fixed end and free end of pipe 9, select the corresponding size of fixed pipe interface 8 and deflection pipe interface 11 to assemble the pipe installation angle deviation simulation device.

[0079] When assembling the pipeline installation angle deviation simulation device, determine the bolt holes for connecting the fixed back plate 2 to the base 1 according to the length of the pipeline 9, and fix the fixed back plate 2.

[0080] Before connecting the deflection interface plate 6 to the deflection back plate 5, the unstable pad ring 14 is first fitted onto the narrow neck of the deflection tube interface 11. When connecting the deflection interface plate 6 to the deflection back plate 5, the deflection tube interface 11 passes through the mounting hole opened on the deflection back plate 5, and the unstable pad ring 14 is inserted into the mounting hole.

[0081] Before connecting the two deflecting slide plates 4 to the base 1, first install the turntable at the bottom of the deflecting back plate 5 into the round hole opened on the base 1. Then, deflect the deflecting back plate 5 and slowly push one of the deflecting slide plates 4 into a slide rail on the base 1. At the same time, deflect the deflecting back plate 5 so that the corresponding end of the deflecting back plate 5 fits into the rectangular opening on the deflecting slide plate 4. Figure 8 As shown, the deflecting back plate 5 is deflected again, and another deflecting slide plate 4 is slowly pushed into another slide rail of the base 1. At the same time, the deflecting back plate 5 is deflected so that the corresponding end of the deflecting back plate 5 is inserted into the rectangular opening on the deflecting slide plate 4, as shown. Figure 9 As shown, the two ends of the deflection backplate 5 are then connected to the two deflection slide plates 4 with vertical bolts, but the bolts are not tightened.

[0082] Under conditions of no installation stress and angular deviation, the fixed end and free end of the pipe 9 are connected to the fixed pipe interface 8 and the deflection pipe interface 11 by means of the outer nut, according to the preset installation torque and installation parameters.

[0083] Release the outer nut between the fixed end and free end of pipe 9 and the fixed pipe interface 8 and the deflection pipe interface 11, but ensure that the fixed end and free end of pipe 9 are in conical sealing contact with the fixed pipe interface 8 and the deflection pipe interface 11.

[0084] The servo drive motor 7 drives the deflection slide plate 4 to slide a distance X, where tanθ=2X / L, θ is the preset angle deviation of the pipe 9, and L is the initial distance between the centers of the bolt holes at both ends of the two deflection slide plates 4 that connect to the deflection back plate 5, that is, the distance before the two deflection slide plates 4 slide and the deflection back plate 5, the deflection interface plate 6 and its deflection pipe interface 11 deflect. X can be obtained by the displacement sensor 10 monitoring the sliding distance of the deflection slide plate 4 connected to the servo drive motor 7.

[0085] According to the preset installation torque and installation parameters, connect the fixed end and free end of the pipe 9 to the fixed pipe interface 8 and the deflection pipe interface 11 through the outer nut, and tighten the bolts connecting the two ends of the deflection back plate 5 to the two deflection slide plates 4, and fix them in the slide groove to fix the two deflection slide plates 4.

[0086] The hydraulic source 13 supplies and maintains pressure inside the pipeline 9 to conduct tests, including pressure resistance, air pressure leakage, system pressure, and burst tests.

[0087] For aircraft piping, the above steps can be used to conduct tests on the piping under different preset angle deviation conditions, thus fully verifying the application of aircraft piping.

[0088] The technical solution of this application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A device for simulating pipeline installation angle deviation, characterized in that, Includes a base (1), a fixed back plate (2), a fixed interface plate (3), a deflection slide (4), a deflection back plate (5), a deflection interface plate (6), and a servo drive motor (7). The base (1) is fixed on the table. The fixed back plate (2) is vertically connected to the base (1); The fixed interface plate (3) is connected to one side of the fixed back plate (2), and a fixed pipe interface (8) is connected to it. The fixed pipe interface (8) is used to connect one end of the pipe (9), which is the fixed end of the pipe (9). The deflection slide (4) has a rectangular opening on its side wall. There are two deflection slides (4), which are arranged opposite each other and are vertically connected to the base (1) via a slide rail. They are perpendicular to the fixed back plate (2) and are located on the side of the fixed back plate (2) connected to the fixed interface plate (3). The deflection backplate (5) is set between the two deflection slide plates (4), and has a turntable at the bottom. The turntable is installed in the round hole opened on the base (1). The two ends of the deflection backplate (5) extend into the two rectangular openings and are connected to the two deflection slide plates (4) by vertical bolts. The bolt holes at both ends of the deflection slide plates (4) are racetrack shaped. The deflection interface plate (6) is connected to the side of the deflection back plate (5) facing the fixed back plate (2). The two sides are connected to the deflection pipe interface (11) and the hydraulic pipe interface (12). The deflection pipe interface (11) passes through the mounting hole opened on the deflection back plate (5) and is used to connect the other end of the pipe (9). This end is the free end of the pipe (9). The hydraulic pipe interface (12) is connected to the deflection pipe interface (11) and is used to connect the hydraulic source (13). The servo drive motor (7) is connected to a deflection slide plate (4) to drive the deflection slide plate (4) to slide, thereby causing the deflection back plate (5), deflection interface plate (6) and its deflection pipe interface (11) and hydraulic pipe interface (12) to deflect, and also causing another deflection slide plate (4) to slide in the opposite direction. This enables the adjustment of the installation angle of the pipeline (9) and quantitative simulation of the angle deviation of the pipeline installation.

2. The pipeline installation angle deviation simulation device according to claim 1, characterized in that, The base (1) is rectangular and is fixed to the table surface by four anchor bolts; The fixed back plate (2) is rectangular and is vertically connected to the base (1) by two bolts; The fixed interface plate (3) is rectangular and is connected to the fixed back plate (2) by four bolts; The fixed pipe interface (8) is integrally formed on the fixed interface plate (3), or is detachably connected to the fixed interface plate (3); The deflection slide (4) is rectangular and a displacement sensor (10) is provided between it and the base (1). The displacement sensor (10) is used to monitor the sliding distance of the deflection slide (4) on the base (1). The deflection backplate (5) is rectangular, and the height of its two ends is less than the height of the rectangular opening; The deflection interface plate (6) is rectangular and is connected to the side of the deflection back plate (5) facing the fixed back plate (2) by four bolts; The deflection tube interface (11) is integrally formed on the deflection back plate (5), or it is detachably connected to the deflection interface plate (6).

3. The pipeline installation angle deviation simulation device according to claim 2, characterized in that, The fixed pipe interface (8) and the fixed end of the pipe (9) are connected by an outer nut and have a conical sealing contact. The deflection pipe interface (11) is connected to the free end of the pipe (9) by an outer nut and the conical surface is in a sealed contact. The hydraulic pipe interface (12) is connected to the hydraulic source (13) via a hydraulic hose. The interface and the hydraulic hose can be connected via an outer nut and sealed with a conical or arc-shaped surface.

4. The pipeline installation angle deviation simulation device according to claim 3, characterized in that, The bolts connecting the two ends of the deflection backplate (5) to the two deflection slide plates (4) have their heads in the slide grooves opened in the slide rail grooves of the base (1) and the slide grooves formed at the bottom of the base (1). After the bolts are tightened, they can be secured in the slide grooves to fix the deflection slide plates (4).

5. The pipeline installation angle deviation simulation device according to claim 4, characterized in that, The base (1) has multiple pairs of bolt holes for connecting the fixed back plate (2), and the corresponding bolt holes can be selected to connect the fixed back plate (2) to adapt to the length of the pipeline (9).

6. The pipeline installation angle deviation simulation device according to claim 5, characterized in that, The deflection tube interface (11) is located in the mounting hole, which is a narrow neck. An unstable washer (14) is installed in the mounting hole. The unstable washer (14) is fitted onto the narrow neck. The unstable washer (14) is formed by connecting two semi-circular ring structures.

7. The pipeline installation angle deviation simulation device according to claim 6, characterized in that, The servo drive motor (7) is connected to the ball screw (16) via the coupling (15). The ball screw (16) is connected to the screw slider (17) and the support block (18). The screw slider (17) is connected to the deflection slide plate (4) by four bolts. The support block (18) is supported on the base (1).

8. A pipeline testing method, implemented based on the pipeline installation angle deviation simulation device according to claim 7, characterized in that, include: Based on the dimensions of the fixed end and free end of the pipeline (9), select the corresponding fixed pipe interface (8) and deflection pipe interface (11) to assemble the pipeline installation angle deviation simulation device. Under conditions of no installation stress and angular deviation, the fixed end and free end of the pipeline (9) are connected to the fixed pipe interface (8) and the deflection pipe interface (11) by means of the outer nut according to the preset installation torque and installation parameters. Release the outer nut between the fixed end and free end of the pipeline (9) and the fixed pipe interface (8) and the deflection pipe interface (11), and the conical sealing contact between the fixed end and free end of the pipeline (9) and the fixed pipe interface (8) and the deflection pipe interface (11); The servo drive motor (7) drives the deflection slide (4) to slide a distance X, where tanθ=2X / L, θ is the preset angle deviation of the pipeline (9), and L is the initial distance between the centers of the bolt holes at both ends of the deflection back plate (5) on the two deflection slides (4). According to the preset installation torque and installation parameters, connect the fixed end and free end of the pipeline (9) to the fixed pipe interface (8) and the deflection pipe interface (11) through the outer nut, and tighten the bolts connecting the two ends of the deflection back plate (5) to the two deflection slide plates (4) in the groove to fix the two deflection slide plates (4). Pressure is supplied and maintained inside the pipeline (9) by a hydraulic source (13) to carry out test experiments.

9. The pipeline testing method according to claim 8, characterized in that, When assembling the pipeline installation angle deviation simulation device, determine the bolt holes for connecting the fixed back plate (2) to the base (1) according to the length of the pipeline (9), and fix the fixed back plate (2); Before connecting the deflection interface plate (6) to the deflection back plate (5), first put the unstable washer ring (14) on the narrow neck of the deflection tube interface (11). When connecting the deflection interface plate (6) to the deflection back plate (5), the deflection tube interface (11) passes through the mounting hole opened on the deflection back plate (5), and the unstable washer ring (14) is inserted into the mounting hole. Before connecting the two deflection slides (4) to the base (1), first install the turntable at the bottom of the deflection back plate (5) into the round hole opened on the base (1), then deflect the deflection back plate (5) and slowly push one deflection slide (4) into one slide rail of the base (1), while deflecting the deflection back plate (5) so that the corresponding end of the deflection back plate (5) is inserted into the rectangular opening on the deflection slide (4), deflect the deflection back plate (5) again and slowly push the other deflection slide (4) into another slide rail of the base (1), while deflecting the deflection back plate (5) so that the corresponding end of the deflection back plate (5) is inserted into the rectangular opening on the deflection slide (4), and then connect the two ends of the deflection back plate (5) to the two deflection slides (4) with vertical bolts, but do not tighten the bolts.

10. The pipeline testing method according to claim 9, characterized in that, Tests were conducted on the pipeline (9), including pressure resistance, air pressure leakage, system pressure, and burst test.

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