A pressure testing device and a testing method for an aviation pipeline connection system

Abstract

The present invention discloses a pressure test device and a test method for an aviation pipeline connection system, which relates to the field of pressure test technology, including a transmission component, a dustproof housing, a control console, a speed regulating device, a drawer, and a flow path device. The dustproof housing sprays a viscous liquid between a viscous pulley and a transmission belt through an arc-shaped nozzle to reduce the slipping phenomenon, and then the dustproof flap is manually flipped up. At this time, the transmission component drives the hydraulic rack forward through the hydraulic gear, and the hydraulic rack drives the clamping block to move to the right through the hydraulic oil, inserting the test connector into the flow path device, and then the dustproof flap is manually closed downward, and the plunger rod squeezes the hydraulic oil in the hydraulic rod into the expansion ring of the flow path device, so that the expansion ring expands and clamps the test connector to achieve the auxiliary feeding function. The flow path device drives the double valve to slide back and forth through the switching plunger, so that the three flow path channels are connected or closed to achieve the switching of the test mode.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure testing, and in particular to a pressure testing device and a testing method for an aviation pipeline connection system. Background Art

[0002] In the aerospace field, aircraft engines and oxygen supply systems have connection systems based on a large number of pipes and connectors. The materials of these connection systems are generally made of aluminum alloy and stainless steel due to different pressures. These aluminum alloy and stainless steel connection systems mainly bear the coupling excitation from the fluid in the pipe. If the connection system cannot withstand the coupling excitation of the fluid in the pipe, leakage, explosion and other accidents will occur; therefore, before the connection system is installed, it is necessary to conduct a strict pressure test on the connection system.

[0003] The existing connection system pressure testing device generally controls the fluid speed through a fluid pump. When performing pressure tests on multiple connection systems, it can only output fluid with one flow rate, which makes the test flexibility and efficiency low. At the same time, the existing device also requires manual installation of pipelines. When faced with multiple pipelines, this manual installation is inefficient and cannot improve the efficiency of installation and testing. Therefore, there is a need for an aviation pipeline connection system pressure testing device and a testing method that can simultaneously output fluids with multiple flow rates and automatically and quickly install test pipelines to solve the shortcomings of the existing connection system pressure testing device.

[0004] For example, the patent with announcement number CN112730075B provides a pressure test device for aviation pipeline connector system and its test method, which includes multiple installation modules, pressure modules and measurement and control modules. The installation modules can be expanded multiple times, thereby increasing the number of tests for pipeline connectors. The installation module of this application is expanded multiple times, and the measurement and control module is controlled by an automated measuring device, which has the advantages of high test accuracy, convenient operation, accurate and reliable data, etc. Although this solution can carry out pressure tests on multiple pipelines and tests on multiple pressure environments, it cannot carry out pressure tests on multiple pipe connector systems under different pressure environments and flow rate impacts in the same set of tests; thus, it cannot further improve the convenience and efficiency of the tests; this solution cannot achieve dust-proof sealing for other modules when idle, and long-term non-use may cause dust blockage; when installing multiple test pipes, the installation method of this solution is relatively cumbersome, and errors in manual installation may also lead to leakage during testing; although this solution has a high-pressure hydraulic station and a low-pressure hydraulic station, it cannot simultaneously transport high-pressure and low-pressure fluids into the test pipeline, and cannot fully utilize the two hydraulic stations, thereby failing to further improve the efficiency of the tests. At the same time, the high-pressure hydraulic station and low-pressure hydraulic station of this solution require two power sources, which greatly increases the maintenance cost and control difficulty. Summary of the invention

[0005] The purpose of the present invention is to provide an aviation pipeline connection system pressure testing equipment and a testing method, aiming to solve technical problems existing in the prior art such as how to conduct pressure tests in different pressure environments and flow rate shocks in the same set of tests, how to achieve dust prevention in an idle state, how to achieve rapid auxiliary installation of test connectors, and how to achieve simultaneous output of fluids with different flow rates using one power source.

[0006] In view of the above technical problems, the technical solution adopted by the present invention is: a pressure testing equipment for an aviation pipeline connection system, comprising a transmission component, a dustproof casing, a control console, a speed regulating device, a drawer, and a flow path device; the dustproof casing is provided with a dustproof flap, a dustproof shell, a plunger rod, a hydraulic rod, a transverse sliding block, a hydraulic gear, and a hydraulic rack; the dustproof flap is rotatably connected to the upper end of the dustproof shell; the upper end of the plunger rod is rotatably connected to the lower surface of the dustproof flap; the plunger rod is also slidably installed in the hydraulic rod; hydraulic oil is stored in the hydraulic rod; the lower end of the hydraulic rod is also hinged to the right side of the transverse sliding block; the transverse sliding block is slidably installed on the left side of the dustproof shell in the front and rear directions; the hydraulic gear is rotatably connected to the left side of the dustproof shell; the hydraulic rack is slidably installed on the left side of the dustproof shell; the hydraulic gear also forms a gear rack pair with the hydraulic rack; a viscous pulley is provided on the transmission component , transfer belt; two viscous pulleys are fixedly connected to the left side of the dustproof flap and the inner cylindrical surface of the hydraulic gear respectively; the dustproof flap is manually flipped up, at this time, the dustproof flap drives the hydraulic gear to rotate through two viscous pulleys and a transfer belt, the hydraulic gear drives the hydraulic rack forward, and the hydraulic rack pushes the test connector through the hydraulic oil to insert into the flow path device, and then the dustproof flap is manually closed downward, so that the plunger rod squeezes the hydraulic oil in the hydraulic rod into the flow path device, so that the flow path device expands and clamps the test connector to realize the auxiliary feeding function; the control console is fixedly installed on the right side of the dustproof shell; the flow path device is fixedly installed on the right side of the dustproof shell; the right end of the flow path device is also connected to the upper end of the speed regulating device through a pipeline; the speed regulating device is fixedly installed at the bottom of the dustproof shell; the drawer is slidably installed at the lower end of the dustproof shell along the front and rear directions.

[0007] Furthermore, the dustproof housing also includes a dustproof base, a filter base, a hydraulic pipeline, a clamping block, a hydraulic column, and an L-shaped hydraulic cylinder; the dustproof base is fixedly installed at the lower end of the dustproof housing; the front end of the hydraulic rack is also slidably installed in the L-shaped hydraulic cylinder along the front and rear directions; the filter base is fixedly installed at the bottom of the dustproof housing; the two ends of the hydraulic pipeline are respectively connected to the internal space of the hydraulic rod and the left end of the flow path device; the clamping block is fixedly installed at the front end of the hydraulic column; the hydraulic column is slidably installed in the L-shaped hydraulic cylinder along the left and right directions; the L-shaped hydraulic cylinder is fixedly installed at the bottom of the dustproof housing.

[0008] Furthermore, the transfer component also includes a mucus box, a transfer shell, an arc-shaped nozzle, and a mucus pump; the mucus box is fixedly installed at the rear end of the dustproof shell; the transfer shell is fixedly installed at the left end of the dustproof shell; the arc-shaped nozzle is fixedly installed on the side of the mucus pump; and the mucus pump is connected to the mucus box through a pipe.

[0009] Furthermore, a liquid storage hole and an absorption rod are arranged on the viscous pulley along the radial direction; the absorption rod is used to absorb the viscous liquid in the liquid storage hole.

[0010] Furthermore, an annular groove and a transverse groove are provided on the inner periphery of the transfer belt; the transverse groove is used for the inflow of the viscous liquid; and the annular groove is used for guiding the viscous liquid.

[0011] Furthermore, the speed regulating device includes a speed regulating housing, an inspection cover, a discharge pipe, a pump housing, a pump gear, a motor, a first gear ring, a first central gear, a first planetary gear, a first planetary truss, a second gear ring, a third gear ring, a second central gear, a second planetary gear, a third central gear, a third planetary gear, a second planetary truss, a fixed shaft, and a rotating sleeve; the speed regulating housing is fixedly installed at the bottom of the dustproof base; the inspection cover is slidably installed at the upper end of the speed regulating housing; the two ends of the discharge pipe are respectively connected to the internal space of the speed regulating housing and the right end of the flow path device; the pump housing is fixedly installed inside the speed regulating housing; two pump gears are also rotatably connected in the pump housing; the two pump gears are meshed with each other; the motor is fixedly installed at the rear end of the speed regulating housing in the horizontal direction; the output end of the motor is also fixedly connected to the pump gear in the middle and lower part; the first gear ring is fixedly installed in the speed regulating housing; the central axis of the first central gear is connected to the pump gear in the middle and upper part The gears are fixedly connected; the first planetary gears respectively form a gear pair with the first central gear and the first ring gear; the front end of the first planetary truss is rotatably connected with the three first planetary gears respectively; the rear end of the first planetary truss is fixedly connected with the pump gear above the rear end; the third ring gear is fixedly installed in the speed regulating housing; the central axis of the third central gear is fixedly connected with the pump gear above the middle; the third planetary gears respectively form a gear pair with the third central gear and the third ring gear; the rear end of the second planetary truss is respectively rotatably connected with the three third planetary gears; the front end of the second planetary truss is respectively rotatably connected with the three second planetary gears; the second central gear is fixedly installed inside the speed regulating housing through a fixed shaft; the second ring gear is rotatably connected to the periphery of the fixed shaft through a rotating sleeve; the second planetary gears respectively form a gear pair with the second central gear and the second ring gear; the outer cylindrical surface of the rotating sleeve is also fixedly connected to the pump gear above the front end.

[0012] Furthermore, the flow path device includes an expansion ring, a flow path housing, a regulating bolt, a liquid pipeline, a switching plunger, a flow path bracket, a flow path back cover, a flow path channel, and a double valve; the expansion ring is fixedly installed at the front end of the flow path housing; the flow path housing is fixedly installed on the right side of the dustproof housing; three flow paths are also arranged on the flow path housing; a connecting hole is arranged between two adjacent flow paths; the regulating bolt and the side of the flow path housing form a threaded pair; the two ends of the liquid pipeline are respectively connected with the discharge pipe and the flow path housing; the switching plunger is slidably installed in the flow path housing along the left and right directions; the flow path bracket is fixedly installed at the right end of the switching plunger; the flow path bracket is also fixedly connected to the right ends of the three double valves respectively; the flow path back cover is fixedly installed at the right end of the flow path channel; the right end of the flow path back cover is also connected with the upper end of the discharge pipe through a pipeline; the double valve is also slidably installed in the flow path channel along the axial direction of the flow path channel.

[0013] Furthermore, the double valve includes a valve body sleeve, a hollow bracket, a one-way plunger, a pressure measuring spring, and a liquid-passing cavity; the valve body sleeve is slidably installed in the flow channel along the axial direction of the flow channel; the hollow bracket is fixedly installed at the right end of the valve body sleeve; the interior of the hollow bracket is a hollow structure; the hollow bracket is also provided with an inlet and an outlet; the one-way plunger is slidably installed on the periphery of the hollow bracket along the axial direction of the valve body sleeve; a pressure sensor is provided at the right end of the one-way plunger; the pressure sensor on the one-way plunger is fixedly installed on the right end of the hollow bracket through a pressure measuring spring; and a liquid-passing cavity is also provided inside the one-way plunger.

[0014] Furthermore, the control console includes a control host and a pressure meter; the control host is fixedly installed at the right end of the dustproof shell; the pressure meter is fixedly installed in the control host; the pressure meter is connected to the pressure sensor on the one-way plunger through a wire.

[0015] A method for pressure testing an aviation pipeline connection system, such as the above-mentioned pressure testing device for an aviation pipeline connection system, comprises the following steps:

[0016] Step 1: First, manually flip up the dust-proof flap. At this time, the dust-proof flap drives the hydraulic gear to rotate through two viscous pulleys and a transmission belt. The hydraulic gear drives the hydraulic rack to move forward. The hydraulic rack pushes the clamping block and the hydraulic column to move to the right through the hydraulic oil. At this time, the test connector is placed on the left end of the flow path device. Then the clamping block drives the test connector to be inserted into the flow path device. Then manually close the dust-proof flap downward. The dust-proof flap drives the transverse slider backward through the plunger rod and the hydraulic rod. When the transverse slider moves backward to the limit position, the plunger rod slides inward relative to the hydraulic rod, so that the hydraulic oil is squeezed into the expansion ring of the flow path device through the hydraulic pipeline, so that the expansion ring expands and clamps the test connector to realize the auxiliary feeding function;

[0017] Step 2: While step 1 is being carried out, the mucus pump on the transmission component sucks out the viscous liquid in the mucus tank, and then sprays the viscous liquid between the viscous pulley and the transmission belt through the arc-shaped nozzle. The sprayed viscous liquid flows into the liquid storage hole and the annular groove through the transverse groove. When the absorption rod on the transmission belt contacts the inner surface of the viscous pulley, the viscous liquid absorbed in the absorption rod is squeezed out, thereby reducing the occurrence of slippage;

[0018] Step 3: After step 1, first pass the fluid into the speed regulating housing, the motor on the speed regulating device drives the pump gear at the lower middle to rotate, the pump gear at the lower middle will drive the pump gear at the upper middle to rotate, the pump gear at the upper middle drives the first center gear and the third center gear to rotate at the same time, the first center gear drives the first planetary truss and the rear end pump gear to perform deceleration motion through the planetary motion of the first planetary gear, the third center gear drives the second planetary gear to perform planetary deceleration motion on the second center gear through the third planetary gear and the second planetary truss, the second planetary gear drives the second gear ring and the front end pump gear to perform acceleration motion, thereby achieving different speed outputs of the three sets of pump gears;

[0019] Step 4: After the three groups of pump gears output fluids with different flow rates, the fluids enter the flow path of the flow path device through the discharge pipe. When the regulating bolt is tightened inward, the liquid pipeline will be closed. At this time, the switching plunger is in a retracted state, so that the valve body sleeve of the double valve closes the connecting hole between the two flow paths. The fluid will directly flow into the test connector through the double valve to achieve synchronous pressure testing of multiple pipelines with three flow rate fluids;

[0020] Step 5: When the regulating bolt is loosened outward, the liquid pipeline will be opened. At this time, the fluid will drive the switching plunger to extend outward, causing the valve body sleeve of the double valve to move to the right, thereby opening the connecting hole between the two flow channels. At this time, only one flow rate of fluid is introduced. The fluid flows into a flow channel through a double valve, and then flows into the remaining two flow channels from the connecting hole of the flow channel, and then flows into each test connector to achieve synchronous pressure testing of multiple pipelines with one flow rate fluid.

[0021] Compared with the prior art, the present invention has the following beneficial effects: (1) The dustproof housing sprays the viscous liquid between the viscous pulley and the transmission belt through the arc-shaped nozzle to reduce the slipping phenomenon. Then the dustproof flap is manually flipped up. At this time, the transmission component drives the hydraulic rack forward through the hydraulic gear. The hydraulic rack drives the clamping block to move to the right through the hydraulic oil. The test connector is inserted into the flow path device. Then the dustproof flap is manually closed downward. The plunger rod squeezes the hydraulic oil in the hydraulic rod into the expansion ring of the flow path device, so that the expansion ring expands and clamps the test connector to achieve the auxiliary feeding function. (2) The flow path device drives the double valve to slide back and forth through the switching plunger, so that the three flow paths are connected or closed to achieve the switching of the test mode. (3) The speed regulating device drives the pump gear at the lower middle part to rotate through the motor, and the pump gear at the lower middle part drives the pump gear at the upper middle part to rotate. The pump gear at the upper middle part drives the first center gear and the third center gear to rotate simultaneously. The first center gear drives the first planetary truss and the pump gear at the rear end to perform deceleration motion through the planetary motion of the first planetary gear. The third center gear drives the second planetary gear to perform planetary deceleration motion on the second center gear through the third planetary gear and the second planetary truss. The second planetary gear drives the second gear ring and the pump gear at the front end to perform acceleration motion, thereby realizing different speed outputs of the three sets of pump gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The schematic diagram of the overall assembly structure of the working state of the embodiment of the present invention is as follows Figure 1 .

[0023] Figure 2 The schematic diagram of the overall assembly structure of the working state of the embodiment of the present invention is as follows Figure 2 .

[0024] Figure 3 The structure of the transmission component of the present invention is shown in FIG. Figure 1 .

[0025] Figure 4 The structure of the transmission component of the present invention is shown in FIG. Figure 2 .

[0026] Figure 5 It is a schematic diagram of the component structure of the viscous pulley of the present invention.

[0027] Figure 6 This is a schematic diagram of the parts structure of the transfer belt of the present invention.

[0028] Figure 7 The structure of the dustproof housing of the present invention is shown in FIG. Figure 1 .

[0029] Figure 8 The structure of the dustproof housing of the present invention is shown in FIG. Figure 2 .

[0030] Fig. 9 It is a structural schematic diagram of the control console of the present invention.

[0031] Fig.10 The structure of the speed regulating device of the present invention is shown in FIG. Figure 1 .

[0032] Fig.11 The structure of the speed regulating device of the present invention is shown in FIG. Figure 2 .

[0033] Fig.12 The structure of the speed regulating device of the present invention is shown in FIG. Figure 3 .

[0034] Fig.13 The structure of the speed regulating device of the present invention is shown in FIG. Figure 4 .

[0035] Fig.14 The structure of the speed regulating device of the present invention is shown in FIG. Figure 5 .

[0036] Fig.15 The structure of the flow path device of the present invention is shown in FIG. Figure 1 .

[0037] Fig.16 The structure of the flow path device of the present invention is shown in FIG. Figure 2 .

[0038] Fig.17 The structure of the double valve of the present invention is shown in FIG. Figure 1 .

[0039] Fig.18 The structure of the double valve of the present invention is shown in FIG. Figure 2 .

[0040] In the figure: 1-transmission assembly; 2-dustproof housing; 3-control console; 4-speed regulating device; 5-drawer; 6-flow path device; 101-viscous liquid box; 102-transmission housing; 103-viscous pulley; 104-arc nozzle; 105-viscous liquid pump; 106-transmission belt; 107-liquid storage hole; 108-absorption rod; 109-annular groove; 110-lateral groove; 201-dustproof flap; 202-anti- Dust base; 203-dustproof housing; 204-piston rod; 205-hydraulic rod; 206-transverse slide; 207-hydraulic gear; 208-hydraulic rack; 209-filter bottom plate; 210-hydraulic pipeline; 211-clamping block; 212-hydraulic column; 213-L-type hydraulic cylinder; 301-control host; 302-pressure instrument; 401-speed regulating housing; 402-inspection cover; 403-discharge Tube; 404- pump housing; 405- pump gear; 406- motor; 407- first gear ring; 408- first central gear; 409- first planetary gear; 410- first planetary truss; 411- second gear ring; 412- third gear ring; 413- second central gear; 414- second planetary gear; 415- third central gear; 416- third planetary gear; 417- second planetary truss; 418- fixed shaft; 419- rotating sleeve; 601- expansion sleeve; 602- flow path housing; 603- regulating bolt; 604- liquid pipeline; 605- switching plunger; 606- flow path bracket; 607- flow path back cover; 608- flow path channel; 609- double valve; 610- valve body sleeve; 611- hollow bracket; 612- one-way plunger; 613- pressure measuring spring; 614- liquid cavity. DETAILED DESCRIPTION

[0041] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0042] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0043] Figures 1 to 18 It is a preferred embodiment of the present invention.

[0044] like Figure 1 and Figure 2As shown, the dustproof housing 2 is provided with a dustproof flap 201, a dustproof housing 203, a plunger rod 204, a hydraulic rod 205, a transverse sliding block 206, a hydraulic gear 207, and a hydraulic rack 208; the dustproof flap 201 is rotatably connected to the upper end of the dustproof housing 203; the upper end of the plunger rod 204 is rotatably connected to the lower surface of the dustproof flap 201; the plunger rod 204 is also slidably installed in the hydraulic rod 205; the hydraulic rod 205 stores hydraulic oil; the lower end of the hydraulic rod 205 The hydraulic gear 207 is rotatably connected to the left side of the dustproof housing 203; the hydraulic rack 208 is slidably installed on the left side of the dustproof housing 203; the hydraulic gear 207 also forms a gear rack pair with the hydraulic rack 208; the transmission component 1 is provided with a viscous pulley 103 and a transmission belt 106; the two viscous pulleys 103 are respectively connected to the dustproof flap The left side of 201 and the inner cylindrical surface of the hydraulic gear 207 are fixedly connected; the dust-proof flap 201 is manually flipped up, at this time, the dust-proof flap 201 drives the hydraulic gear 207 to rotate through two viscous pulleys 103 and a transmission belt 106, and the hydraulic gear 207 drives the hydraulic rack 208 to move forward. The hydraulic rack 208 pushes the test connection piece into the flow path device 6 through the hydraulic oil, and then the dust-proof flap 201 is manually closed downward, so that the plunger rod 204 squeezes the hydraulic oil in the hydraulic rod 205 into the flow path device 6, so that the flow path device 6 expands and clamps the test connection piece to realize the auxiliary feeding function; the console 3 is fixedly installed on the right side of the dust-proof shell 203; the flow path device 6 is fixedly installed on the right side of the dust-proof shell 203; the right end of the flow path device 6 is also connected to the upper end of the speed regulating device 4 through a pipeline; the speed regulating device 4 is fixedly installed at the bottom of the dust-proof shell 2; the drawer 5 is slidably installed at the lower end of the dust-proof shell 203 along the front and rear directions.

[0045] like Figure 3 and Figure 4 As shown, in the transfer assembly 1, the mucus tank 101 is fixedly mounted at the rear end of the dustproof shell 203; the transfer shell 102 is fixedly mounted at the left end of the dustproof shell 203; the arc-shaped nozzle 104 is fixedly mounted on the side of the mucus pump 105; the mucus pump 105 is connected to the mucus tank 101 through a pipeline.

[0046] like Figure 5 As shown, in the viscous belt wheel 103 , a liquid storage hole 107 and an absorption rod 108 are provided on the viscous belt wheel 103 along the radial direction; the absorption rod 108 is used to absorb the viscous liquid in the liquid storage hole 107 .

[0047] like Figure 6As shown, in the transfer belt 106, an annular groove 109 and a transverse groove 110 are provided on the inner periphery of the transfer belt 106; the transverse groove 110 is used for the inflow of the viscous liquid; and the annular groove 109 is used for guiding the viscous liquid.

[0048] like Figure 7 and Figure 8 As shown, in the dustproof housing 2, the dustproof base 202 is fixedly installed at the lower end of the dustproof shell 203; the front end of the hydraulic rack 208 is also slidably installed in the L-shaped hydraulic cylinder 213 along the front-to-back direction; the filter bottom plate 209 is fixedly installed at the bottom of the dustproof shell 203; the two ends of the hydraulic pipeline 210 are respectively connected to the internal space of the hydraulic rod 205 and the left end of the flow path device 6; the clamping block 211 is fixedly installed at the front end of the hydraulic column 212; the hydraulic column 212 is slidably installed in the L-shaped hydraulic cylinder 213 along the left-right direction; the L-shaped hydraulic cylinder 213 is fixedly installed at the bottom of the dustproof shell 203.

[0049] like Fig. 9 As shown, in the control console 3, the control host 301 is fixedly installed at the right end of the dustproof housing 203; the pressure instrument 302 is fixedly installed in the control host 301; the pressure instrument 302 is connected to the pressure sensor on the one-way plunger 612 through a wire.

[0050] like Fig.10 , Fig.11 , Fig.12 , Fig.13 and Fig.14As shown, in the speed regulating device 4, the speed regulating housing 401 is fixedly mounted on the bottom of the dustproof base 202; the inspection cover 402 is slidably mounted on the upper end of the speed regulating housing 401; the two ends of the discharge pipe 403 are respectively connected to the internal space of the speed regulating housing 401 and the right end of the flow path device 6; the pump housing 404 is fixedly mounted inside the speed regulating housing 401; two pump gears 405 are also rotatably connected in the pump housing 404; the two pump gears 405 are meshed with each other; the motor 406 is fixedly mounted on the rear end of the speed regulating housing 401 in the horizontal direction; the output end of the motor 406 is also fixedly connected to the pump gear 405 at the lower middle part; the first ring gear 407 is fixedly mounted in the speed regulating housing 401; the central axis of the first central gear 408 is fixedly connected to the pump gear 405 at the upper middle part; the first planetary gear 409 forms a gear pair with the first central gear 408 and the first ring gear 407 respectively; the front end of the first planetary truss 410 is respectively connected to the three first planetary gears 4 09 rotationally connected; the rear end of the first planetary truss 410 is fixedly connected to the pump gear 405 above the rear end; the third ring gear 412 is fixedly installed in the speed regulating housing 401; the central axis of the third central gear 415 is fixedly connected to the pump gear 405 above the middle; the third planetary gear 416 respectively forms a gear pair with the third central gear 415 and the third ring gear 412; the rear end of the second planetary truss 417 is rotationally connected with the three third planetary gears 416 respectively; the front end of the second planetary truss 417 is rotationally connected with the three second planetary gears 414 respectively; the second central gear 413 is fixedly installed inside the speed regulating housing 401 through a fixed shaft 418; the second ring gear 411 is rotationally connected to the periphery of the fixed shaft 418 through a rotating sleeve 419; the second planetary gear 414 respectively forms a gear pair with the second central gear 413 and the second ring gear 411; the outer cylindrical surface of the rotating sleeve 419 is also fixedly connected to the pump gear 405 above the front end.

[0051] like Fig.15 and Fig.16 As shown, in the flow path device 6, the expansion ring 601 is fixedly installed at the front end of the flow path housing 602; the flow path housing 602 is fixedly installed on the right side of the dustproof housing 203; three flow path channels 608 are also arranged on the flow path housing 602; a connecting hole is arranged between two adjacent flow path channels 608; the regulating bolt 603 and the side of the flow path housing 602 form a threaded pair; the two ends of the liquid passage 604 are respectively connected to the discharge pipe 403 and the flow path housing 602; the switching plunger 605 is slidably installed in the flow path housing 602 along the left and right directions; the flow path bracket 606 is fixedly installed at the right end of the switching plunger 605; the flow path bracket 606 is also fixedly connected to the right ends of the three double valves 609 respectively; the flow path back cover 607 is fixedly installed at the right end of the flow path channel 608; the right end of the flow path back cover 607 is also connected to the upper end of the discharge pipe 403 through a pipeline; the double valve 609 is also slidably installed in the flow path channel 608 along the axial direction of the flow path channel 608.

[0052] like Fig.17 and Fig.18 As shown, in the double valve 609, the valve body sleeve 610 is slidably installed in the flow channel 608 along the axial direction of the flow channel 608; the hollow bracket 611 is fixedly installed at the right end of the valve body sleeve 610; the interior of the hollow bracket 611 is a hollow structure; the hollow bracket 611 is also provided with an inlet and an outlet; the one-way plunger 612 is slidably installed on the periphery of the hollow bracket 611 along the axial direction of the valve body sleeve 610; a pressure sensor is provided at the right end of the one-way plunger 612; the pressure sensor on the one-way plunger 612 is fixedly installed at the right end of the hollow bracket 611 through a pressure measuring spring 613; and the interior of the one-way plunger 612 is also provided with a liquid-passing cavity 614.

[0053] Working principle of the present invention: Figure 1 and Figure 2 The usage and corresponding scenarios of the present invention are given. The posture control of the pressure test process of the pipeline connection system is determined by the transmission component 1, the dustproof housing 2, the speed regulating device 4, and the flow path device 6. The posture of the transmission component 1 is determined by the dustproof housing 2, and the postures of the speed regulating device 4 and the flow path device 6 are determined by the dustproof housing 2. The dustproof housing 2 is the core of the pressure test process of the pipeline connection system.

[0054] Taking the first embodiment as an example, the dustproof flap 201 is first manually flipped up, and the dustproof flap 201 drives the hydraulic gear 207 to rotate through two viscous pulleys 103 and a transmission belt 106. The hydraulic gear 207 drives the hydraulic rack 208 to move forward, and the hydraulic rack 208 pushes the clamping block 211 and the hydraulic column 212 to move to the right through the hydraulic oil. At this time, the test connection piece is placed on the left end of the flow path device 6, and then the clamping block 211 will drive the test connection piece to be inserted into the flow path device 6, and then the dustproof flap 201 is manually closed downward, and the dustproof flap 201 first drives the transverse sliding block 206 to move backward through the plunger rod 204 and the hydraulic rod 205. When the transverse sliding block 206 moves backward to the extreme position, the plunger rod 204 The hydraulic rod 205 slides inward relative to the hydraulic rod 205, so that the hydraulic oil is squeezed into the expansion ring 601 of the flow path device 6 through the hydraulic pipeline 210, so that the expansion ring 601 expands and clamps the test connector to realize the auxiliary feeding function; while the viscous pulley 103 on the transmission component 1 rotates, the mucus pump 105 on the transmission component 1 sucks out the viscous liquid in the mucus box 101, and then sprays the viscous liquid between the viscous pulley 103 and the transmission belt 106 through the arc nozzle 104. The sprayed viscous liquid will flow into the liquid storage hole 107 and the annular groove 109 through the transverse groove 110. When the absorption rod 108 on the transmission belt 106 contacts the inner surface of the viscous pulley 103, the absorption rod 108 will be absorbed. The attached viscous liquid is squeezed out, thereby reducing the occurrence of slippage; after the test connector is installed, the fluid is introduced into the speed regulating housing 401, and the motor 406 on the speed regulating device 4 drives the pump gear 405 at the lower middle to rotate, and the pump gear 405 at the lower middle will drive the pump gear 405 at the upper middle to rotate, and the pump gear 405 at the upper middle drives the first center gear 408 and the third center gear 415 to rotate at the same time, and the first center gear 408 drives the first planetary truss 410 and the rear end pump gear 405 to decelerate through the planetary motion of the first planetary gear 409, and the third center gear 415 drives the second planetary gear 414 in the second center through the third planetary gear 416 and the second planetary truss 417. The heart gear 413 performs planetary deceleration motion, and the second planetary gear 414 drives the second gear ring 411 and the front end pump gear 405 to perform acceleration motion, thereby realizing different speed outputs of the three groups of pump gears 405; after the three groups of pump gears 405 output fluids with different flow rates, the fluids enter the flow path channel 608 of the flow path device 6 through the discharge pipe 403, and when the regulating bolt 603 is tightened inwardly, the liquid passage 604 will be closed. At this time, the switching plunger 605 is in a retracted state, so that the valve body sleeve 610 of the double valve 609 closes the connecting hole between the two flow paths 608, and the fluid will directly flow into the test connector through the double valve 609 to realize the synchronous pressure test of multiple pipelines by three flow rate fluids;When the regulating bolt 603 is loosened outward, the liquid passage 604 will be opened. At this time, the fluid will drive the switching plunger 605 to extend outward, so that the valve body sleeve 610 of the double valve 609 also moves to the right, thereby opening the connecting hole between the two flow channels 608. At this time, only one flow rate of fluid is introduced. The fluid flows into one flow channel 608 through a double valve 609, and then flows into the other two flow channels 608 from the connecting hole of the flow channel 608, and then flows into each test connector to achieve a synchronous pressure test of multiple pipelines by one flow rate fluid; the pressure meter 302 on the console 3 will display the pressure sensor value on the one-way plunger 612, so as to facilitate the staff to observe; after the drawer 5 is manually opened, the auxiliary tool can be put into the drawer 5. ;

[0055] Specifically, Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the dust cover 201 is first manually flipped upwards, and the dust cover 201 drives the hydraulic gear 207 and the dust cover 201 to rotate synchronously through two viscous pulleys 103 and a transmission belt 106. The hydraulic gear 207 drives the hydraulic rack 208 to move forward in the L-shaped hydraulic cylinder 213. The hydraulic rack 208 pushes the clamping block 211 and the hydraulic column 212 to move to the right through the hydraulic oil in the L-shaped hydraulic cylinder 213. At this time, the test connector is placed on the left end of the flow path device 6. The rear clamping block 211 drives the test connection piece to be inserted into the flow path device 6, and then the dust cover 201 is manually closed downward. The dust cover 201 first drives the lateral sliding block 206 to move backward on the left side of the dustproof housing 203 through the plunger rod 204 and the hydraulic rod 205. When the lateral sliding block 206 moves backward to the limit position, the plunger rod 204 slides inward relative to the hydraulic rod 205, so that the hydraulic oil is squeezed into the expansion ring 601 of the flow path device 6 through the hydraulic pipeline 210, so that the expansion ring The ring 601 expands and clamps the test connector to achieve the auxiliary feeding function; while the viscous pulley 103 rotates, the viscous pump 105 sucks out the viscous liquid in the viscous box 101, and then sprays the viscous liquid into the gap between the viscous pulley 103 and the transmission belt 106 through the arc nozzle 104, and the sprayed viscous liquid flows into the liquid storage hole 107 and the annular groove 109 through the transverse groove 110, and the viscous liquid in the liquid storage hole 107 is absorbed by the absorption rod 108. When the absorption rod 108 on the belt 106 contacts the inner surface of the viscous pulley 103, the viscous liquid adsorbed in the absorption rod 108 will be squeezed out, thereby reducing the occurrence of slippage; the transfer shell 102 is used to prevent the mucus from being thrown out; the dustproof base 202 is used to bear the overall weight; after the test connector is removed, the remaining fluid and particle residue in the connector will fall onto the filter bottom plate 209, and the fluid will fall into the bottom of the dustproof shell 203 after being filtered by the filter bottom plate 209, so as to achieve solid-liquid separation.

[0056] like Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.14 , Fig.15 , Fig.16 , Fig.17 and Fig.18As shown, after the test connector is installed, the fluid is introduced into the speed regulating housing 401, and the motor 406 on the speed regulating device 4 drives the pump gear 405 at the lower middle to rotate, and the pump gear 405 at the lower middle will drive the pump gear 405 at the upper middle to rotate, and the pump gear 405 at the upper middle drives the first central gear 408 and the third central gear 415 to rotate at the same time, and the first central gear 408 drives the first planetary gear 409 to perform planetary deceleration motion on the first gear ring 407, thereby interfering with the first planetary truss 410 and the rear end pump gear 405 to perform deceleration motion, and the third central gear 415 drives the third planetary gear 416 to perform planetary deceleration motion on the third gear ring 412, and the third planetary gear 416 is driven by the second planetary truss The rack 417 drives the second planetary gear 414 to perform planetary motion on the second central gear 413, and the second planetary gear 414 drives the front end pump gear 405 to perform acceleration motion by rotating the sleeve 419 and the second gear ring 411, thereby realizing the output of the three groups of pump gears 405 at different speeds; after the three groups of pump gears 405 output fluids with different flow rates, the fluid first enters the right side of the speed regulating housing 401 through the pump housing 404, and then flows into the discharge pipe 403 from the right side of the speed regulating housing 401, and then enters the interior of the flow channel 608 through the flow channel rear cover 607. When the regulating bolt 603 is tightened inwardly, the liquid passage 604 will be closed. At this time, the switching plunger 605 is in a retracted state, so that the valve body sleeve 610 of the double valve 609 will turn the two The connecting hole between the flow channels 608 is closed, and the fluid will directly flow into the test connector through the double valve 609 to realize synchronous pressure testing of multiple pipelines with three flow rate fluids; when the regulating bolt 603 is loosened outward, the liquid pipeline 604 will be opened, and the fluid will drive the switching plunger 605 to extend outward in the flow channel housing 602, and the switching plunger 605 drives the valve body sleeve 610 of the double valve 609 to move to the right through the flow channel bracket 606, thereby opening the connecting hole between the two flow channels 608. At this time, only one flow rate of fluid is introduced, and the fluid flows into one flow channel 608 through a double valve 609, and then flows into the remaining two flow channels 608 from the connecting hole of the flow channel 608, And flow into each test connection piece to realize a synchronous pressure test of multiple pipelines by a flow rate fluid; when the fluid reaches the flow path channel 608, the fluid will flow from the right end of the valve body sleeve 610 to the inlet of the hollow bracket 611, and then flow from the inlet of the hollow bracket 611 into the interior of the hollow bracket 611. At this time, the fluid will accumulate at the right end of the one-way plunger 612. When the pressure reaches a certain level, the pressure will push the one-way plunger 612 to move to the left, so that the inlet of the liquid-passing cavity 614 on the one-way plunger 612 is aligned with the outlet of the hollow bracket 611. At this time, the fluid will enter the liquid-passing cavity 614 of the one-way plunger 612, and then flow from the front end of the liquid-passing cavity 614 into the test pipe fitting to realize the one-way passage function of the liquid;The pressure measuring spring 613 is used to transmit pressure and drive the one-way plunger 612 to rebound; after the inspection cover 402 is opened, the interior of the speed regulating housing 401 can be inspected; the fixed shaft 418 is used to fix the second central gear 413; the pressure instrument 302 on the console 3 will display the pressure sensor value on the one-way plunger 612, so as to facilitate the staff to observe; the control host 301 on the console 3 is used to control the operation of the power part; after the drawer 5 is manually opened, the auxiliary tool can be placed in the drawer 5; the expansion ring 601 clamps the test connector by expansion. ;

[0057] A method for pressure testing an aviation pipeline connection system, such as the above-mentioned pressure testing device for an aviation pipeline connection system, comprises the following steps:

[0058] Step 1: First, manually flip up the dust-proof flap 201. At this time, the dust-proof flap 201 drives the hydraulic gear 207 to rotate through two viscous pulleys 103 and a transmission belt 106. The hydraulic gear 207 drives the hydraulic rack 208 to move forward. The hydraulic rack 208 pushes the clamping block 211 and the hydraulic column 212 to move to the right through the hydraulic oil. At this time, the test connection piece is placed on the left end of the flow path device 6. Then the clamping block 211 will drive the test connection piece to be inserted into the flow path device 6. Then, manually close the dust-proof flap 201 downward. The dust-proof flap 201 first drives the transverse slider 206 to move backward through the plunger rod 204 and the hydraulic rod 205. When the transverse slider 206 moves backward to the limit position, the plunger rod 204 slides inward relative to the hydraulic rod 205, so that the hydraulic oil is squeezed into the expansion ring 601 of the flow path device 6 through the hydraulic pipeline 210, so that the expansion ring 601 expands and clamps the test connection piece to realize the auxiliary feeding function;

[0059] Step 2: While step 1 is being performed, the mucus pump 105 on the transmission component 1 sucks out the viscous liquid in the mucus box 101, and then sprays the viscous liquid between the viscous pulley 103 and the transmission belt 106 through the arc-shaped nozzle 104. The sprayed viscous liquid flows into the liquid storage hole 107 and the annular groove 109 through the transverse groove 110. When the absorption rod 108 on the transmission belt 106 contacts the inner surface of the viscous pulley 103, the viscous liquid absorbed in the absorption rod 108 is squeezed out, thereby reducing the occurrence of slippage;

[0060] Step 3: After step 1, the fluid is first introduced into the speed regulating housing 401, and the motor 406 on the speed regulating device 4 drives the pump gear 405 at the lower middle to rotate, and the pump gear 405 at the lower middle will drive the pump gear 405 at the upper middle to rotate, and the pump gear 405 at the upper middle drives the first central gear 408 and the third central gear 415 to rotate at the same time, and the first central gear 408 drives the first planetary truss 410 and the rear end pump gear 405 to perform deceleration motion through the planetary motion of the first planetary gear 409, and the third central gear 415 drives the second planetary gear 414 to perform planetary deceleration motion on the second central gear 413 through the third planetary gear 416 and the second planetary truss 417, and the second planetary gear 414 drives the second gear ring 411 and the front end pump gear 405 to perform acceleration motion, thereby realizing different speed outputs of the three groups of pump gears 405;

[0061] Step 4: After the three groups of pump gears 405 output fluids of different flow rates, the fluids enter the flow channel 608 of the flow path device 6 through the discharge pipe 403. When the regulating bolt 603 is tightened inward, the liquid pipeline 604 will be closed. At this time, the switching plunger 605 is in a retracted state, so that the valve body sleeve 610 of the double valve 609 closes the connecting hole between the two flow channels 608. The fluid will directly flow into the test connector through the double valve 609 to achieve synchronous pressure testing of multiple pipelines with three flow rate fluids;

[0062] Step 5: When the regulating bolt 603 is loosened outward, the liquid pipeline 604 will be opened. At this time, the fluid will drive the switching plunger 605 to extend outward, so that the valve body sleeve 610 of the double valve 609 also moves to the right, thereby opening the connecting hole between the two flow channels 608. At this time, only one flow rate of fluid is introduced. The fluid flows into one flow channel 608 through a double valve 609, and then flows from the connecting hole of the flow channel 608 into the remaining two flow channels 608, and then flows into each test connector to achieve a synchronous pressure test of multiple pipelines with one flow rate fluid.

[0063] The present invention is not limited to the above-mentioned specific implementation modes. Various changes made by technicians in the relevant technical field based on the above-mentioned conception without creative work all fall within the protection scope of the present invention.

Claims

1. An aviation pipeline connection system pressure test device, comprising a transmission component (1), a dustproof housing (2), a control console (3), a speed regulating device (4), a drawer (5), and a flow path device (6), characterized in that: The dustproof housing (2) is provided with a dustproof flap (201), a dustproof shell (203), a plunger rod (204), a hydraulic rod (205), a transverse sliding block (206), a hydraulic gear (207), and a hydraulic rack (208); the dustproof flap (201) is rotatably connected to the upper end of the dustproof shell (203); the upper end of the plunger rod (204) is rotatably connected to the lower surface of the dustproof flap (201); the plunger rod (204) is also slidably mounted in the hydraulic rod (205); hydraulic oil is stored in the hydraulic rod (205); the lower end of the hydraulic rod (205) is also hinged to the right side of the transverse sliding block (206); the transverse sliding block (206) is slidably mounted on the left side of the dustproof shell (203) in the front-rear direction; the hydraulic gear (207) is connected to the hydraulic rack (208); ... 07) is rotatably connected to the left side of the dustproof housing (203); the hydraulic rack (208) is slidably mounted on the left side of the dustproof housing (203); the hydraulic gear (207) and the hydraulic rack (208) also form a gear rack pair; the transmission component (1) is provided with a viscous pulley (103) and a transmission belt (106); the two viscous pulleys (103) are respectively fixedly connected to the left side of the dustproof flap (201) and the inner cylindrical surface of the hydraulic gear (207); the dustproof flap (201) is manually flipped upward, at which time the dustproof flap (201) drives the hydraulic gear (207) to rotate through the two viscous pulleys (103) and a transmission belt (106), and the hydraulic gear (207) drives the hydraulic rack (208) to move forward The hydraulic rack (208) pushes the test connector into the flow path device (6) through the hydraulic oil, and then the dust cover (201) is manually closed downward, so that the plunger rod (204) squeezes the hydraulic oil in the hydraulic rod (205) into the flow path device (6), so that the expansion ring (601) on the flow path device (6) expands and clamps the test connector, thereby realizing the auxiliary feeding function; the control console (3) is fixedly mounted on the right side of the dustproof shell (203); the flow path device (6) is fixedly mounted on the right side of the dustproof shell (203); the right end of the flow path device (6) is also connected to the upper end of the speed regulating device (4) through a pipeline; the speed regulating device (4) is fixedly mounted on the bottom of the dustproof shell (2); the drawer (5) is arranged along the front and rear sides. The dustproof housing (203) is slidably mounted at the lower end of the dustproof housing (203); the dustproof housing (2) further comprises a dustproof base (202), a filter base plate (209), a hydraulic pipeline (210), a clamping block (211), a hydraulic column (212), and an L-shaped hydraulic cylinder (213); the dustproof base (202) is fixedly mounted at the lower end of the dustproof housing (203); the front end of the hydraulic rack (208) is also slidably mounted in the L-shaped hydraulic cylinder (213) along the front-back direction; the filter base plate (209) is fixedly mounted at the bottom of the dustproof housing (203); the two ends of the hydraulic pipeline (210) are respectively connected to the internal space of the hydraulic rod (205) and the left end of the flow path device (6); the clamping block (211) is fixedly mounted at the front end of the hydraulic column (212);The hydraulic column (212) is slidably installed in the L-shaped hydraulic cylinder (213) along the left-right direction; the L-shaped hydraulic cylinder (213) is fixedly installed at the bottom of the dustproof housing (203); the speed regulating device (4) also includes a speed regulating housing (401), an inspection cover (402), a discharge pipe (403), a pump housing (404), a pump gear (405), a motor (406), a first ring gear (407), a first central gear (408), a first planetary gear (409), a first planetary truss (410), a second ring gear (411), a third ring gear (412), a second central gear (413), a second planetary gear (414), a third central gear (415), a third planetary gear (416), and a second planetary truss (41 7), a fixed shaft (418), a rotating sleeve (419); the speed regulating housing (401) is fixedly mounted on the bottom of the dustproof base (202); the inspection cover (402) is slidably mounted on the upper end of the speed regulating housing (401); the two ends of the discharge pipe (403) are respectively connected to the internal space of the speed regulating housing (401) and the right end of the flow path device (6); the pump housing (404) is fixedly mounted inside the speed regulating housing (401); two pump gears (405) are also rotatably connected inside the pump housing (404); the two pump gears (405) are meshed with each other; the motor (406) is fixedly mounted on the rear end of the speed regulating housing (401) in the horizontal direction; the output end of the motor (406) is also fixedly connected to the pump gear (405) at the lower middle part; The first gear ring (407) is fixedly installed in the speed regulating housing (401); the central axis of the first central gear (408) is fixedly connected to the pump gear (405) at the top in the middle; the first planetary gears (409) respectively form a gear pair with the first central gear (408) and the first gear ring (407); the front end of the first planetary truss (410) is rotatably connected to the three first planetary gears (409); the rear end of the first planetary truss (410) is fixedly connected to the pump gear (405) at the top in the rear end; the third gear ring (412) is fixedly installed in the speed regulating housing (401); the central axis of the third central gear (415) is fixedly connected to the pump gear (405) at the top in the middle; the third planetary gears (416) are respectively connected to the third central gear (416); The heart gear (415) and the third gear ring (412) form a gear pair; the rear end of the second planetary truss (417) is rotationally connected to the three third planetary gears (416); the front end of the second planetary truss (417) is rotationally connected to the three second planetary gears (414); the second center gear (413) is fixedly installed inside the speed regulating housing (401) via a fixed shaft (418); the second gear ring (411) is rotationally connected to the periphery of the fixed shaft (418) via a rotating sleeve (419); the second planetary gears (414) respectively form a gear pair with the second center gear (413) and the second gear ring (411); the outer cylindrical surface of the rotating sleeve (419) is also fixedly connected to the pump gear (405) above the front end;The flow path device (6) further comprises an expansion ring (601), a flow path housing (602), an adjusting bolt (603), a liquid passage (604), a switching plunger (605), a flow path bracket (606), a flow path rear cover (607), a flow path channel (608), and a double valve (609); the expansion ring (601) is fixedly mounted on the front end of the flow path housing (602); the flow path housing (602) is fixedly mounted on the right side of the dustproof housing (203); three flow path channels (608) are also arranged on the flow path housing (602); a connecting hole is arranged between two adjacent flow path channels (608); the adjusting bolt (603) and the side surface of the flow path housing (602) form a screw thread. The two ends of the liquid passage (604) are respectively connected to the discharge pipe (403) and the flow path housing (602); the switching plunger (605) is slidably mounted in the flow path housing (602) along the left-right direction; the flow path support (606) is fixedly mounted on the right end of the switching plunger (605); the flow path support (606) is also fixedly connected to the right ends of the three double valves (609); the flow path rear cover (607) is fixedly mounted on the right end of the flow path channel (608); the right end of the flow path rear cover (607) is also connected to the upper end of the discharge pipe (403) through a pipeline; the double valve (609) is also slidably mounted in the flow path channel (608) along the axial direction of the flow path channel (608). ; 2. The aviation pipeline connection system pressure testing equipment according to claim 1, characterized in that: The transfer assembly (1) further comprises a mucus tank (101), a transfer housing (102), an arc-shaped nozzle (104), and a mucus pump (105); the mucus tank (101) is fixedly mounted at the rear end of the dustproof housing (203); the transfer housing (102) is fixedly mounted at the left end of the dustproof housing (203); the arc-shaped nozzle (104) is fixedly mounted on the side of the mucus pump (105); and the mucus pump (105) is connected to the mucus tank (101) via a pipeline.

3. The pressure testing device for aviation pipeline connection system according to claim 2, characterized in that: A liquid storage hole (107) and an absorption rod (108) are provided on the viscous pulley (103) along a radial direction; the absorption rod (108) is used to absorb the viscous liquid in the liquid storage hole (107).

4. The pressure testing device for aviation pipeline connection system according to claim 3, characterized in that: An annular groove (109) and a transverse groove (110) are provided on the inner periphery of the transfer belt (106); the transverse groove (110) is used for the inflow of viscous liquid; and the annular groove (109) is used for guiding the viscous liquid.

5. The aviation pipeline connection system pressure testing equipment according to claim 4, characterized in that: The double valve (609) comprises a valve body sleeve (610), a hollow bracket (611), a one-way plunger (612), a pressure measuring spring (613), and a liquid passage cavity (614); the valve body sleeve (610) is slidably installed in the flow channel (608) along the axial direction of the flow channel (608); the hollow bracket (611) is fixedly installed at the right end of the valve body sleeve (610); the interior of the hollow bracket (611) is a hollow structure; the hollow bracket (611) is also provided with an inlet and an outlet; the one-way plunger (612) is slidably mounted on the periphery of the hollow bracket (611) along the axial direction of the valve body sleeve (610); a pressure sensor is arranged at the right end of the one-way plunger (612); the pressure sensor on the one-way plunger (612) is fixedly mounted on the right end of the hollow bracket (611) via a pressure measuring spring (613); and a liquid passage cavity (614) is also arranged inside the one-way plunger (612).

6. The aviation pipeline connection system pressure testing equipment according to claim 5, characterized in that: The control console (3) comprises a control host (301) and a pressure meter (302); the control host (301) is fixedly mounted on the right end of the dustproof housing (203); the pressure meter (302) is fixedly mounted inside the control host (301); the pressure meter (302) is connected to a pressure sensor on a one-way plunger (612) via a wire.

7. A pressure testing method for an aviation pipeline connection system, characterized in that: The aviation pipeline connection system pressure testing device according to claim 6 comprises the following steps: Step 1: First, manually flip up the dust cover (201). At this time, the dust cover (201) drives the hydraulic gear (207) to rotate through two viscous pulleys (103) and a transmission belt (106). The hydraulic gear (207) drives the hydraulic rack (208) to move forward. The hydraulic rack (208) pushes the clamping block (211) and the hydraulic column (212) to move to the right through the hydraulic oil. At this time, the test connector is placed at the left end of the flow path device (6). Then the clamping block (211) drives the test connector to be inserted into the flow path device (6). The dust cover (201) is manually closed downwards, and the dust cover (201) first drives the transverse sliding block (206) to move backwards through the plunger rod (204) and the hydraulic rod (205). When the transverse sliding block (206) moves backwards to the limit position, the plunger rod (204) slides inwards relative to the hydraulic rod (205), so that the hydraulic oil is squeezed into the expansion ring (601) of the flow path device (6) through the hydraulic pipeline (210), so that the expansion ring (601) expands and clamps the test connection piece, thereby realizing the auxiliary feeding function; Step 2: While step 1 is being performed, the mucus pump (105) on the transmission component (1) sucks out the viscous liquid in the mucus box (101), and then sprays the viscous liquid between the viscous pulley (103) and the transmission belt (106) through the arc-shaped nozzle (104). The sprayed viscous liquid flows into the liquid storage hole (107) and the annular groove (109) through the transverse groove (110). When the absorption rod (108) on the transmission belt (106) contacts the inner surface of the viscous pulley (103), the viscous liquid absorbed in the absorption rod (108) is squeezed out, thereby reducing the occurrence of slippage; Step 3: After step 1, the fluid is first introduced into the speed regulating housing (401), and the motor (406) on the speed regulating device (4) drives the pump gear (405) at the lower middle part to rotate, and the pump gear (405) at the lower middle part drives the pump gear (405) at the upper middle part to rotate, and the pump gear (405) at the upper middle part drives the first center gear (408) and the third center gear (415) to rotate simultaneously, and the first center gear (408) drives the first planetary truss (410) and the rear end pump gear (405) to perform a deceleration motion through the planetary motion of the first planetary gear (409), and the third center gear (415) drives the second planetary gear (414) to perform a planetary deceleration motion on the second center gear (413) through the third planetary gear (416) and the second planetary truss (417), and the second planetary gear (414) drives the second gear ring (411) and the front end pump gear (405) to perform an acceleration motion, thereby achieving different speed outputs of the three sets of pump gears (405); Step 4: After the three groups of pump gears (405) output fluids of different flow rates, the fluids enter the flow channel (608) of the flow path device (6) through the discharge pipe (403). When the regulating bolt (603) is tightened inward, the liquid passage (604) is closed. At this time, the switching plunger (605) is in a retracted state, so that the valve body sleeve (610) of the double valve (609) closes the connecting hole between the two flow channels (608). The fluids directly flow into the test connector through the double valve (609), thereby realizing synchronous pressure testing of multiple pipelines by three flow rate fluids. Step 5: When the regulating bolt (603) is loosened outward, the liquid passage (604) will be opened. At this time, the fluid will drive the switching plunger (605) to extend outward, so that the valve body sleeve (610) of the double valve (609) also moves to the right, thereby opening the connecting hole between the two flow channels (608). At this time, only one flow rate of fluid is introduced. The fluid flows into one flow channel (608) through a double valve (609), and then flows from the connecting hole of the flow channel (608) into the remaining two flow channels (608), and then flows into each test connector to achieve a synchronous pressure test of multiple pipelines by one flow rate fluid.

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