Nozzle flow and flow direction test fixture and method

Abstract

The invention discloses a nozzle flow and flow direction test fixture and method. The clamp comprises a clamping mechanism used for clamping and positioning a to-be-tested part, an oil inlet mechanism used for introducing a test medium into the to-be-tested part, a test mounting seat used for mounting a flow test tool or a flow direction test tool, and a plugging mechanism used for plugging an oil outlet hole, which does not need to be measured, in the to-be-tested part. The oil inlet mechanism is fixedly mounted on the supporting seat, the test mounting seat is arranged in a to-be-tested part in a penetrating manner and is fixed on a central shaft of the supporting seat, and the flow test tool comprises an oil receiving copper pipe which is arranged in the test mounting seat in a penetrating manner and is used for receiving a test medium, a measuring cup communicated with the oil receiving copper pipe, and flow detection equipment arranged at the bottom of the measuring cup; the flow direction test tool comprises a measuring block fixed at a preset position on the test mounting seat, and a target hole is formed in the preset position in the measuring block; and the plugging mechanism covers and is fixed above the to-be-tested part. The device can effectively improve the test accuracy, is convenient to mount and dismount, and is high in efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft engine parts inspection, in particular to a nozzle flow direction test fixture and a nozzle flow direction test method comprising the nozzle flow direction test fixture. Background Art

[0002] Aircraft engines have a complete lubricating oil system to lubricate, cool, clean and prevent corrosion of designated parts. Whether the lubricating oil system can work properly directly affects the working performance and service life of the engine. The lubricating oil nozzle is an important part of the lubricating oil system. The lubricating oil enters the lubricating oil nozzle from the oil inlet hole and then sprays out from the oil outlet holes distributed on the lubricating oil nozzle, so that a certain flow of lubricating oil is sprayed toward the designated parts to achieve cooling and lubrication. Therefore, during the processing of parts such as lubricating oil nozzles and bearing seats, it is necessary to conduct flow direction tests on the processed oil outlet holes to detect whether the oil outlet holes can spray a certain flow of medium to the designated position under fixed medium, pressure range, and temperature range, so as to determine whether its flow capacity and oil injection direction meet the use requirements.

[0003] Before conducting a flow direction test on the processed oil outlet, a fixture is required to fix the part to be tested. However, the traditional fixture is a simple bracket that only fixes the part to be tested by tightening screws. During the test, the nozzle is easily shaken by the impact of liquid flow, causing the nozzle to be unable to maintain the horizontal downward centering position, which affects the measurement of the spray angle; especially when shaking violently, workers have to hold the nozzle by hand, which has a large human factor and is not conducive to data collection. In addition, it is difficult to install and replace parts, resulting in the assembly time of the product accounting for a large proportion of the test cycle of a single nozzle, a long product test cycle, low test efficiency, and a delay in the nozzle test cycle.

[0004] In the prior art, the flow test of the nozzle is carried out by manual visual inspection, that is, the nozzle and the matching tooling are pre-installed before the test, the oil pressure is set, and the lubricating oil with appropriate parameters is delivered to the oil outlet during the test and sprayed through the pipeline on the tooling, and the lubricating oil sprayed from each oil outlet is collected into a measuring cup respectively, and the collection time is fixed by the stopwatch reading, and the reading on the measuring cup is used to detect the volume of the lubricating oil sprayed at a fixed time to detect the flow size. This method of detection by manual visual inspection can basically meet the inspection requirements of product quality, but the stopwatch reading and the measuring cup reading have certain errors, there are quality risks, and the detection accuracy of the nozzle flow direction is low. At present, for the flow direction test of the nozzle, it is usually to observe whether the oil column sprayed from the oil outlet can reach the theoretical position to evaluate whether the flow direction is qualified, so as to finally obtain the test result of the nozzle flow direction. However, although the accuracy of the flow direction test using the existing method is better, it needs to be coordinated with the matching tooling, and there is great inconvenience in collecting the sprayed lubricating oil, which is time-consuming and labor-intensive. Summary of the invention

[0005] The invention provides a nozzle flow direction test fixture and method, so as to solve the technical problem in the prior art that the nozzle flow direction test is time-consuming, labor-intensive and has large errors due to the inconvenience of nozzle clamping.

[0006] According to one aspect of the present invention, there is provided a nozzle flow direction test fixture, comprising: a clamping mechanism, comprising a support seat for supporting and clamping a part to be tested and a fixing member for pressing and fixing the part to be tested on the support seat, the fixing member being fixedly mounted on the support seat along the circumference of the part to be tested;

[0007] The oil inlet mechanism is fixedly mounted on the support seat and is used to introduce the test medium into the part to be tested;

[0008] A test mounting seat is inserted into the part to be tested and fixed on the central axis of the support seat, and is used to install a flow test tool and a flow direction test tool to respectively perform a flow test and a flow direction test on the part to be tested. The flow test tool comprises an oil receiving copper pipe inserted into the test mounting seat and arranged corresponding to the oil outlet hole of the part to be tested, a measuring cup connected to the oil receiving copper pipe, and a flow detection device arranged at the bottom of the measuring cup. The flow direction test tool comprises a measuring block fixed at a preset position on the test mounting seat, and a target hole is opened in the measuring block at a preset position.

[0009] The plugging mechanism is coaxially arranged with the part to be tested and fixed above the part to be tested, and is used to plug the oil outlet hole and / or the oil receiving copper pipe that does not need to be tested for flow rate and flow direction.

[0010] Furthermore, the support seat includes a support plate and a support leg fixed to the bottom of the support plate, a positioning groove for clamping the part to be tested is opened in the support plate, and the fixing piece is arranged on the periphery of the positioning groove;

[0011] The height of the legs is greater than the height of the measuring cup.

[0012] Furthermore, the fixing member includes a pressure plate for covering the part to be tested and an angle pin for positioning the pressure plate on the support disk. The angle pin is axially inserted into the pressure plate and the support disk in sequence and is fixedly connected to the pressure plate and the support disk.

[0013] Furthermore, the oil inlet mechanism includes a pipe joint mounting seat fixed on the support plate, a pipe joint movably inserted into the pipe joint mounting seat, and a locking nut for locking the pipe joint to the pipe joint mounting seat, wherein the locking nut is sleeved on the outside of the pipe joint and is threadedly connected to the pipe joint;

[0014] One end of the pipe joint is used to be connected with the test medium equipment, and the other end is used to be connected with the oil inlet hole of the part to be tested.

[0015] Furthermore, the test mounting seat includes a column arranged on the central axis of the positioning groove and fixedly connected to the support plate, and a mounting plate fixed to the upper end of the column, the mounting plate is coaxially arranged with the part to be tested and has a plurality of mounting holes opened along the axial direction;

[0016] The oil receiving copper pipe is sequentially passed through the mounting hole, and is arranged in the mounting plate and the supporting plate, and is fixed to the mounting plate.

[0017] Furthermore, the flow direction test tooling also includes an oil-conducting copper tube for receiving the test medium in the oil outlet holes on the tested part that do not require flow direction testing and / or for connecting to the target hole to receive the test medium passing through the target hole. The oil-conducting copper tube is sequentially inserted into the mounting plate and the support plate through the mounting hole and fixed to the mounting plate.

[0018] Furthermore, the flow detection device includes a weight sensor for measuring the weight of the test medium in the measuring cup and a detector for calculating and displaying the flow measurement result. The weight sensor is arranged at the bottom of the measuring cup, and the detector is electrically connected to the weight sensor.

[0019] Furthermore, a connecting hose is fixed to one end of the oil receiving copper tube and the oil guiding copper tube away from the oil outlet hole of the part to be tested, so as to guide the test medium.

[0020] Furthermore, the sealing mechanism includes a sealing disk coaxially arranged with the part to be tested and a compression plug fixedly mounted on the sealing disk. The sealing disk cover is arranged above the part to be tested and is detachably fixedly connected to the part to be tested. The diameter of the compression plug is adapted to the oil outlet hole of the part to be tested and the inner diameter of the oil receiving copper tube.

[0021] According to one aspect of the present invention, there is also provided a nozzle flow direction test method using the nozzle flow direction test fixture, comprising the following steps:

[0022] S1: The part to be tested is coaxially sleeved on the outside of the test mounting seat, and is placed on the support seat so that it is clamped by the support seat, and then the fixing cover is pressed on the outer ring at the bottom of the part to be tested and fixed on the support seat, so as to achieve the clamping and positioning of the part to be tested;

[0023] S2: Adjust the position of the oil inlet mechanism so that it corresponds to the oil inlet hole of the part to be tested, and at the same time, cover and fix the blocking mechanism above the part to be tested;

[0024] S3: When the fixture is used to perform a flow test on the part to be tested, a flow measurement tool is used. Specifically, the oil receiving copper tube is sequentially inserted into the test mounting seat and the support seat along the axial direction, and the position of the oil receiving copper tube is adjusted and fixed so that one end of the oil receiving copper tube corresponds to the oil outlet hole of the part to be tested and the other end is connected to the measuring cup. Then, the sealing mechanism is used to seal the oil outlet hole in the part to be tested that does not need to be subjected to the flow test, and then the oil inlet mechanism is opened to introduce the test medium into the oil inlet hole of the part to be tested, so that the test medium is sprayed from the oil outlet hole into the oil receiving copper tube and flows into the measuring cup, and the flow test result is obtained through the flow detection equipment;

[0025] S4: When the fixture is used to perform a flow direction test on the part to be tested, a flow direction measurement tool is used. Specifically, the measuring block is installed at a preset position on the test mounting seat, and then the sealing mechanism is used to seal the oil outlet holes in the part to be tested that do not require a flow direction test. The oil inlet mechanism is then opened to introduce the test medium into the oil inlet holes of the part to be tested. Whether the test medium sprayed from the oil outlet holes passes through the target hole on the measuring block is observed to detect whether the flow direction of the part to be tested meets the requirements.

[0026] The present invention has the following beneficial effects:

[0027] The nozzle flow direction test fixture and method of the present invention, the clamping mechanism of the fixture firmly clamps the part to be tested through the cooperation of the support seat and the fixing part, so that the part to be tested remains stable during the flow direction test, and the clamping mechanism can position the part to be tested, which is convenient for clamping, saves time and effort, has high stability, and accurate positioning; by installing the oil inlet mechanism on the support seat and arranging it on the outside of the part to be tested, the oil inlet hole of the part to be tested and the oil inlet mechanism are arranged correspondingly, so that the test medium can be transported, and the oil inlet mechanism and the clamping mechanism are integrated, which is convenient and fast for transportation and use; a test mounting seat is set on the central axis of the support seat and is passed through the inner cavity of the part to be tested, and a flow test tool or a flow direction test tool is installed on the test mounting seat to respectively perform flow or flow direction tests on the part to be tested, and the test mounting seat can realize the installation of the flow test tool or the flow direction test tool The flow test fixture adopts a measuring cup and a flow detection device for measurement, which can effectively reduce the error caused by visual reading compared with the visual inspection method in the prior art. The flow direction test fixture adopts a method of setting a target hole on the measuring block. By observing whether the test medium sprayed from the oil outlet passes through the target hole, it can be judged whether its flow direction meets the requirements. The measuring block is fixedly installed at a preset position of the test mounting seat to avoid test errors caused by repeated clamping, and the position and size of the target hole are set according to the purpose of the part to be tested and the theoretical spray range, with high accuracy. By setting the sealing mechanism coaxially with the part to be tested and fixing it above the part to be tested, the oil outlet hole that does not need to be tested for flow or flow direction can be sealed. It is suitable for parts to be tested with multiple complex oil outlet holes and has certain versatility.

[0028] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0030] Figure 1 This is a cross section of the nozzle flow flow to the test fixture of the preferred embodiment of the present invention when conducting a flow test Figure 1-1 ;

[0031] Figure 2 is a top view of a nozzle flow direction test fixture of a preferred embodiment of the present invention when a flow test is performed;

[0032] Figure 3This is a cross section of the nozzle flow direction test fixture of the preferred embodiment of the present invention when conducting a flow direction test Figure 2-2 ;

[0033] Figure 4 is a cross-sectional view of a nozzle flow direction test fixture of a preferred embodiment of the present invention when performing a flow direction test;

[0034] Figure 5 It is a top view of the nozzle flow direction test fixture of the preferred embodiment of the present invention when conducting a flow direction test.

[0035] Legend:

[0036] 100, clamping mechanism; 101, support seat; 1011, support plate; 1012, support leg; 1013, connecting frame; 1014, fixing frame; 102, fixing piece; 1021, pressure plate; 1022, angle pin; 200, oil inlet mechanism; 201, pipe joint mounting seat; 202, pipe joint; 203, locking nut; 300, test mounting seat; 301, column; 302, mounting plate; 400, flow test fixture; 401, oil receiving copper pipe; 402, measuring cup; 403, flow detection equipment; 500, flow direction test fixture; 501, measuring block; 5011, target hole; 502, oil guide copper pipe; 600, plugging mechanism; 601, plugging plate; 602, pressing plug. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0038] like Figure 1 and Figure 3As shown, the nozzle flow direction test fixture of this embodiment is used to firmly clamp the part to be tested to perform a flow direction test. In this embodiment, the part to be tested is a casing, which includes a base and a positioning ring fixed to the outer ring of the base. Angular holes are provided on the positioning ring and on the end of the casing away from the base. The nozzle is provided on the inner wall of the casing, and an oil outlet hole is opened axially in the nozzle. An oil inlet hole is provided on the outer wall of the casing, and a connected oil path is formed between the oil outlet hole and the oil inlet hole. The fixture includes a clamping mechanism 100 for clamping and positioning the casing, an oil inlet mechanism 200 for introducing a test medium into the oil circuit in the casing, a test mounting seat 300 for installing a flow test fixture 400 or a flow direction test fixture 500, and a sealing mechanism 600 for sealing the oil outlet hole of the nozzle that does not need to be measured in the casing. The clamping mechanism 100 includes a support seat 101 for supporting and clamping a positioning ring of the casing and a fixing member 102 for pressing and fixing the positioning ring of the casing on the support seat 101. The fixing member 102 is arranged on the outer periphery of the positioning ring of the casing and fixedly installed on the support seat 101. The support seat 101 and the fixing member 102 cooperate to firmly clamp the casing, so that the nozzle remains stable during the flow direction test. At the same time, the clamping mechanism 100 can position the casing through the angular holes on the casing positioning ring. The clamping is convenient, time-saving and labor-saving, with high stability and accurate positioning. Preferably, a plurality of fixing members 102 are provided along the radial direction of the positioning ring to achieve circumferential positioning of the positioning ring. The oil inlet mechanism 200 is fixedly mounted on the support seat 101, and is used to communicate with the oil inlet hole of the casing to introduce the test medium into the oil circuit. The test mounting seat 300 is penetrated through the inner cavity of the casing and fixed on the central axis of the support seat 101, and is used to install a flow test fixture 400 and a flow direction test fixture 500 to respectively perform a flow test and a flow direction test on the nozzle in the casing. The flow test fixture 400 includes an oil receiving copper tube 401 penetrated through the test mounting seat 300 and corresponding to the oil outlet hole of the casing, a measuring cup 402 connected to the oil receiving copper tube 401, and a flow detection device 403 arranged at the bottom of the measuring cup 402. The flow test fixture 400 uses the measuring cup 402 and the flow detection device 403 for measurement, which is different from the visual method used in the prior art. In comparison, the error caused by visual reading can be effectively reduced; the flow direction test fixture 500 includes a measuring block 501 fixed on the test mounting seat 300, the measuring block 501 is set at a preset position on the test mounting seat 300, and a target hole 5011 is opened in the measuring block 501, the target hole 5011 is a waist-shaped hole, and the position and size of the measuring block 501 and the target hole 5011 are set according to the purpose of the nozzle and the theoretical injection range, so that by observing whether the test medium sprayed from the oil outlet on the nozzle passes through the target hole 5011, it can be judged whether its flow direction meets the requirements, thereby avoiding test errors caused by repeated clamping and having high accuracy.By installing the flow test fixture 400 or the flow direction test fixture 500 on the test mounting seat 300 to respectively test the flow or flow direction of the nozzle, the flow test fixture 400 or the flow direction test fixture 500 can be positioned with the oil outlet in the nozzle, reducing repeated clamping of parts and improving the accuracy of the test. The plugging mechanism 600 is coaxially arranged with the casing and fixed at the end of the casing away from the base. The positioning is achieved through the angular hole on the casing. It is used to plug the oil outlet and / or the oil receiving copper tube 401 that do not need to be tested for flow and flow direction. It is suitable for casings with multiple complex nozzles and has a certain degree of versatility.

[0039] like Figure 1 , Figure 3 and Figure 4 As shown, the support seat 101 includes a support plate 1011 and a leg 1012, and the leg 1012 is fixedly installed at the bottom of the support plate 1011 for supporting the support plate 1011. Specifically, a positioning groove is provided in the support plate 1011, and the shape and size of the positioning groove are adapted to the positioning ring at the end of the receiver, so as to place and clamp the positioning ring of the receiver, and a center hole is provided in the positioning groove, and a connecting rod is provided in the center hole, and the connecting rod is fixed on the support plate 1011 for installing the test mounting seat 300, and the test mounting seat 300 is arranged at the central axis of the center hole and fixedly connected with the connecting rod; the fixing member 102 is radially arranged on the outer periphery of the positioning groove and fixedly installed on the mounting plate, so as to press the positioning ring of the receiver into the positioning groove, so that the receiver is firmly clamped on the support plate 1011 through cooperation with the support plate 1011. Preferably, the support plate 1011 is circular; optionally, the support plate 1011 can also be a square plate or a special-shaped plate. Optionally, a mounting plate is protruding from the outer periphery of the support disk 1011, and multiple mounting plates are arranged along the radial direction of the support disk 1011. The fixing member 102 can also be fixedly installed on the mounting plate to press the annular plate of the receiver into the positioning groove to clamp the receiver.

[0040] Preferably, the height of the legs 1012 is greater than the height of the measuring cup 402 and the flow test equipment, so as to raise the support plate 1011, so as to facilitate the placement of the measuring cup 402 and the flow test equipment at the bottom of the support plate 1011. Preferably, the support mechanism also includes a fixing frame 1014 disposed on the side of the support seat 101, the fixing frame 1014 is vertically disposed and fixedly mounted on the support plate 1011, and a connecting piece is disposed on the fixing frame 1014 for fixedly connecting with an external wall or vertical structure to enhance the stability of the support mechanism and prevent the support seat 101 from tipping over. Optionally, a lifting ring is fixedly mounted on the support plate 1011 to facilitate transfer in coordination with external lifting equipment.

[0041] like Figure 1 , Figure 3 and Figure 4As shown, the fixing member 102 includes a pressing plate 1021 and an angular pin 1022. The pressing plate 1021 is arranged on the outer periphery of the positioning groove along the axial direction of the positioning groove, and is fixedly connected to the support plate 1011 by a fastening screw, so as to press and fix the receiver in the positioning groove; the line connecting the central axis of the angular pin 1022 and the central axis of the positioning groove is the positioning reference axis, and a positioning hole for the angular pin 1022 to pass through is provided in the support plate 1011, and the positioning hole is arranged correspondingly to the angular hole on the positioning ring of the receiver, so as to position the receiver. When in use, the positioning ring of the receiver is clamped in the positioning groove, and the angular hole on the positioning ring is made to correspond to the positioning hole on the support plate 1011, and then the positioning of the receiver is realized by passing the angular pin 1022 through the angular hole and the positioning hole in sequence, and finally the pressing plate 1021 is covered on the upper end of the positioning ring, and the fastening screw is tightened to firmly clamp the receiver.

[0042] like Figure 1 As shown, the oil inlet mechanism 200 includes a pipe joint 202 for inputting a test medium into the oil circuit in the casing, a pipe joint mounting seat 201 for mounting the pipe joint 202, and a locking nut 203 for locking the pipe joint 202 on the pipe joint mounting seat 201. The pipe joint mounting seat 201 is fixed on the support plate 1011, and an installation groove is provided at one end thereof away from the support plate 1011. The pipe joint 202 is movably inserted into the installation groove. The outer wall of the pipe joint 202 is provided with an external thread. The locking nut 203 is sleeved on the outside of the pipe joint 202 and is threadedly connected with the external thread of the pipe joint 202, so that the pipe joint 202 can be locked on the pipe joint mounting seat 201 by screwing the locking nut 203, and at the same time, the pipe joint 202 can be moved toward or away from the casing to adjust the distance between the pipe joint 202 and the casing, so that the pipe joint 202 corresponds to the oil inlet hole on the casing. Preferably, the pipe joint mounting base 201 includes a first support plate arranged perpendicular to the support plate 1011 and a second support plate arranged at an angle between the support plate 1011, one end of the first support plate is fixed on the support plate 1011, and the other end is fixedly connected to the second support plate, and a mounting groove is opened on the second support plate, so that the pipe joint 202 inserted into the mounting groove can also be arranged at an angle to facilitate the correspondence with the oil inlet hole on the casing; optionally, the second support plate is hingedly connected to the first support plate, so that the angle of the pipe joint 202 installed on the second support plate can be adjusted to improve flexibility.

[0043] One end of the pipe joint 202 is used to communicate with the test medium device, and the other end is used to communicate with the oil inlet of the casing, so that when the flow rate or flow direction test of the nozzle begins, the test medium device is turned on, and the test medium can be transported to the oil inlet through the pipe joint 202 and enter the oil circuit. Preferably, a seal is provided between the pipe joint 202 and the oil inlet, and the seal is fixedly installed at the end of the pipe joint 202 to seal between the oil inlet and the pipe joint 202, so as to prevent the test medium from leaking from the connection between the pipe joint 202 and the oil inlet.

[0044] like Figure 1 and Figure 3 As shown, the test mounting seat 300 includes a column 301 and a mounting plate 302. The column 301 is arranged on the central axis of the support plate 1011 and is fixedly connected to the connecting frame 1013 in the support. The mounting plate 302 is arranged at the upper end of the column 301 and is fixedly connected to the column 301. The mounting plate 302 is coaxially arranged with the casing and has a plurality of mounting holes along the axial direction for connecting the flow test fixture 400 or the flow direction test fixture 500.

[0045] When the flow test fixture 400 is connected, the oil receiving copper tube 401 is sequentially inserted into the mounting hole of the mounting plate 302 and the support plate 1011 along the axial direction and fixed to the mounting plate 302, and one end of the oil receiving copper tube 401 is set corresponding to the oil outlet hole of the nozzle, and the other end extends toward the bottom of the support plate 1011 and communicates with the measuring cup 402, so that the test medium sprayed from the oil outlet hole of the nozzle can be received through the joint copper tube, and the test medium is transported to the measuring cup 402, and then the flow measurement of the nozzle is achieved by measuring the flow test equipment at the bottom. Preferably, the outer wall of the oil receiving copper tube 401 is provided with an external thread, and the mounting hole is provided with an internal thread that cooperates with the internal thread for threaded connection, and the oil receiving copper tube 401 can be fixed in the mounting basin by threaded connection with the mounting hole; optionally, the oil receiving copper tube 401 can also be movably inserted into the mounting hole, and the oil receiving copper tube 401 is pressed against the mounting plate 302 by installing a fastening screw on the side wall of the mounting plate 302. Preferably, in this embodiment, the number of mounting holes and the number of oil receiving copper tubes 401 are set to 7 correspondingly to adapt to the number of nozzles for flow test.

[0046] like Figure 3 , Figure 4 and Figure 5As shown, the flow direction test fixture 500 is used to perform a flow direction test on the nozzle in the casing positioned on the clamping mechanism 100, and includes a measuring block 501 with a target hole 5011. When the nozzle needs to be tested for flow direction, the measuring block 501 is fixed on the mounting plate 302, and the size and position of the measuring block 501 and the target hole 5011 are set according to the purpose of the nozzle and the theoretical spray range, so that by observing whether the test medium sprayed from the oil outlet of the nozzle passes through the target hole 5011, it can be judged whether its flow direction meets the requirements. Preferably, in this embodiment, five measuring blocks 501 are set on the mounting plate 302. The flow direction test fixture 500 also includes an oil guide copper tube 502, which is sequentially inserted into the mounting plate 302 and the support plate 1011 through the mounting hole and fixed to the mounting plate 302. On the one hand, the oil guide copper tube 502 can be connected to the oil outlet hole of the nozzle that does not need to be subjected to the flow direction test, so as to guide the test medium therein out to prevent it from spraying toward the target hole 5011 on the measuring block 501, thereby avoiding interference with the flow direction test; on the other hand, for nozzles with a pass rate requirement, the oil guide copper tube 502 can be installed behind the target hole 5011 and connected to the target hole 5011 to receive the test medium passing through the target hole 5011, so that the pass rate can be calculated by the flow rate before and after the target hole 5011 under the same test conditions. Preferably, two oil guide copper tubes 502 are provided.

[0047] like Figure 1 and Figure 2As shown, in the flow test fixture 400, the flow detection device 403 is connected to the end of the oil receiving copper tube 401 away from the nozzle and / or the measuring cup 402, and the flow detection device 403 includes a weight sensor and a detector. The weight sensor is arranged at the bottom of the measuring cup 402, and is used to measure the weight of the test medium in the measuring cup 402. The detector is electrically connected to the weight sensor to calculate and display the flow measurement result. Preferably, a connecting hose is fixed to the end of the oil receiving copper tube 401 away from the oil outlet of the nozzle, which is used to guide the test medium so that it flows into the measuring cup 402 for flow detection. Optionally, the oil receiving copper tube 401 can also be directly connected to the measuring cup 402. When the flow test fixture 400 is installed to carry out a flow test on the nozzle, the test medium equipment is used to pass the test medium into the oil circuit through the pipe joint, and the test medium in the oil circuit flows into the nozzle and is sprayed into the oil receiving copper tube 401 through the oil outlet hole. The end of each oil receiving copper tube 401 close to the nozzle corresponds to the oil outlet hole of the nozzle, so that the test medium sprayed from the oil outlet of each nozzle can be connected to the connecting hose, and the test medium is connected to the measuring cup 402 through the connecting hose, so that the weight sensor at the bottom of the measuring cup 402 can transmit the weight of the test medium in the measuring cup 402 to the detector. The detector analyzes and calculates the density of the test medium and the weight of the test medium in the measuring cup 402 within a fixed time, and obtains the volume of the test medium that can be sprayed from the oil outlet of each nozzle under a certain pressure and temperature within a fixed time, thereby completing the flow test on the nozzle.

[0048] like Figure 1 and Figure 2 As shown, the plugging mechanism 600 includes a plugging disc 601 and a compression plug 602 fixedly mounted on the plugging disc 601. A positioning disc is arranged on one side of the plugging disc 601 for connecting with the casing. The outer diameter of the positioning disc matches the inner diameter of the end of the casing away from the base, so that the positioning disc can be inserted into the casing to achieve coaxial positioning with the casing. At the same time, an angular pin 1022 is installed on the plugging disc 601. The angular pin 1022 corresponds to the angular hole at the end of the casing away from the base, so as to achieve the positioning of the plugging disc 601 and the casing, and ensure that the compression plug 602 positioned and mounted on the plugging disc 601 corresponds to the position of the nozzle, so as to facilitate plugging. The diameter of the compression plug 602 matches the inner diameter of the oil outlet hole of the nozzle and the oil receiving copper tube 401, so as to plug the oil outlet hole and the oil receiving copper tube 401 that do not need to be tested for flow or flow direction. Preferably, in this embodiment, the number of the clamping plugs 602 is set to 3, which can meet the needs of blocking redundant nozzles and avoid cross-entanglement caused by an excessive number of clamping plugs 602.

[0049] According to one aspect of the present invention, there is also provided a nozzle flow direction test method using the nozzle flow direction test fixture, comprising the following steps:

[0050] S1: The part to be tested is coaxially sleeved on the outside of the test mounting seat 300, and is placed on the support seat 101 so that it is clamped by the support seat 101, and then the fixing member 102 is pressed on the outer ring at the bottom of the part to be tested and fixed on the support seat 101, so as to achieve the clamping and positioning of the part to be tested;

[0051] S2: Adjust the position of the oil inlet mechanism 200 so that it corresponds to the oil inlet hole of the part to be tested, and at the same time, cover and fix the blocking mechanism 600 above the part to be tested;

[0052] S3: When the fixture is used to perform a flow test on the part to be tested, a flow measurement tool is used. Specifically, the oil receiving copper tube 401 is sequentially inserted into the test mounting seat 300 and the support seat 101 along the axial direction, and the position of the oil receiving copper tube 401 is adjusted and fixed so that one end thereof corresponds to the oil outlet hole of the part to be tested and the other end thereof is connected to the measuring cup 402. Then, the blocking mechanism 600 is used to block the oil outlet hole in the part to be tested that does not require a flow test, and then the oil inlet mechanism 200 is opened to introduce the test medium into the oil inlet hole of the part to be tested, so that the test medium is sprayed from the oil outlet hole into the oil receiving copper tube 401 and flows into the measuring cup 402, and the flow test result is obtained through the flow detection device 403;

[0053] S4: When the fixture is used to perform a flow direction test on the part to be tested, a flow direction measurement tool is used. Specifically, the measuring block 501 is installed at a preset position on the test mounting seat 300, and then the sealing mechanism 600 is used to seal the oil outlet holes in the part to be tested that do not require a flow direction test. The oil inlet mechanism 200 is then opened to introduce the test medium into the oil inlet hole of the part to be tested. By observing whether the test medium sprayed from the oil outlet passes through the target hole 5011 on the measuring block 501, it is detected whether the flow direction of the part to be tested meets the requirements.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A nozzle flow direction test fixture, characterized in that: include: The clamping mechanism (100) comprises a support seat (101) for supporting and clamping a part to be tested, and a fixing member (102) for pressing and fixing the part to be tested on the support seat (101), wherein the fixing member (102) is fixedly mounted on the support seat (101) along the circumference of the part to be tested; An oil inlet mechanism (200) is fixedly mounted on the support seat (101) and is used to introduce a test medium into the part to be tested; A test mounting seat (300) is inserted into the part to be tested and fixed on the central axis of the support seat (101), and is used to install a flow test fixture (400) and a flow direction test fixture (500) to respectively perform a flow test and a flow direction test on the part to be tested, wherein the flow test fixture (400) comprises an oil receiving copper tube (401) inserted into the test mounting seat (300) and arranged corresponding to the oil outlet of the part to be tested, a measuring cup (402) connected to the oil receiving copper tube (401), and a flow detection device (403) arranged at the bottom of the measuring cup (402), and the flow direction test fixture (500) comprises a measuring block (501) fixed at a preset position on the test mounting seat (300), and a target hole (5011) is opened in the measuring block (501) at a preset position; The plugging mechanism (600) is coaxially arranged with the part to be tested and fixed above the part to be tested, and is used to plug the oil outlet hole and / or the oil receiving copper pipe (401) that do not need to be tested for flow rate and flow direction.

2. The nozzle flow direction test fixture according to claim 1, characterized in that: The support seat (101) comprises a support plate (1011) and a support leg (1012) fixed to the bottom of the support plate (1011); a positioning groove for clamping a part to be tested is provided in the support plate (1011); and the fixing member (102) is arranged on the periphery of the positioning groove; The height of the supporting legs (1012) is greater than the height of the measuring cup (402).

3. The nozzle flow direction test fixture according to claim 2, characterized in that: The fixing member (102) comprises a pressing plate (1021) for covering and fixing the part to be measured, and an angular pin (1022) for positioning the pressing plate (1021) on the supporting disk (1011); the angular pin (1022) is arranged corresponding to the angular hole of the part to be measured, and is sequentially penetrated in the pressing plate (1021) and the supporting disk (1011) along the axial direction.

4. The nozzle flow direction test fixture according to claim 2, characterized in that: The oil inlet mechanism (200) comprises a pipe joint mounting seat (201) fixed on the support plate (1011), a pipe joint (202) movably inserted into the pipe joint mounting seat (201), and a locking nut (203) for locking the pipe joint (202) onto the pipe joint mounting seat (201); the locking nut (203) is sleeved on the outside of the pipe joint (202) and is threadedly connected to the pipe joint (202); One end of the pipe joint (202) is used to communicate with the test medium equipment, and the other end is used to communicate with the oil inlet hole of the part to be tested.

5. The nozzle flow direction test fixture according to claim 2, characterized in that: The test mounting seat (300) comprises a column (301) arranged on the central axis of the positioning groove and fixedly connected to the support plate (1011), and a mounting plate (302) fixed to the upper end of the column (301), wherein the mounting plate (302) is coaxially arranged with the part to be tested and has a plurality of mounting holes opened in the axial direction; The oil receiving copper tube (401) is sequentially inserted into the mounting plate (302) and the supporting plate (1011) through the mounting hole and is fixed to the mounting plate (302).

6. The nozzle flow direction test fixture according to claim 5, characterized in that: The flow direction test fixture (500) further comprises an oil-conducting copper tube (502) for receiving a test medium in an oil outlet hole on a part to be tested that does not require a flow direction test and / or for connecting to the target hole (5011) to receive a test medium passing through the target hole (5011); the oil-conducting copper tube (502) is sequentially inserted into the mounting plate (302) and the support plate (1011) through the mounting hole and is fixed to the mounting plate (302).

7. The nozzle flow direction test fixture according to claim 1, characterized in that: The flow detection device (403) includes a weight sensor for measuring the weight of the test medium in the measuring cup (402) and a detector for calculating and displaying the flow measurement result. The weight sensor is arranged at the bottom of the measuring cup (402), and the detector is electrically connected to the weight sensor.

8. The nozzle flow direction test fixture according to claim 6, characterized in that: A connecting hose is fixed to one end of the oil receiving copper tube (401) and the oil guiding copper tube (502) away from the oil outlet hole of the part to be tested, for guiding the test medium.

9. The nozzle flow direction test fixture according to claim 1, characterized in that: The blocking mechanism (600) comprises a blocking disk (601) coaxially arranged with the part to be tested and a compression plug (602) fixedly mounted on the blocking disk (601); the blocking disk (601) is disposed above the part to be tested and is detachably fixedly connected to the part to be tested; the diameter of the compression plug (602) is adapted to the oil outlet of the part to be tested and the inner diameter of the oil receiving copper tube (401).

10. A nozzle flow direction test method, using the nozzle flow direction test fixture according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: The part to be tested is sleeved on the outside of the test mounting seat (300), and is clamped in the support seat (101), and then the fixing member (102) is pressed on the outer ring at the bottom of the part to be tested to clamp and position the part to be tested; S2: adjusting the position of the oil inlet mechanism (200) so that it corresponds to the oil inlet hole of the part to be tested, and at the same time covering and fixing the blocking mechanism (600) above the part to be tested; S3: When the fixture is used to perform a flow test on the part to be tested, the flow test fixture (400) is used, specifically, the oil receiving copper tube (401) is sequentially inserted into the test mounting seat (300) and the support seat (101) along the axial direction, the position of the oil receiving copper tube (401) is adjusted and fixed, so that one end thereof corresponds to the oil outlet hole of the part to be tested and the other end is connected to the measuring cup (402), and then the blocking mechanism (600) is used to block the oil outlet hole in the part to be tested that does not need to be subjected to the flow test, and then the oil inlet mechanism (200) is opened to pass the test medium into the oil inlet hole of the part to be tested, so that the test medium is sprayed from the oil outlet hole into the oil receiving copper tube (401) and flows into the measuring cup (402), and the flow test result is obtained through the flow detection device (403); S4: When the fixture is used to perform a flow direction test on the part to be tested, the flow direction test fixture (500) is used. Specifically, the measuring block (501) is mounted at a preset position on the test mounting seat (300), and then the blocking mechanism (600) is used to block the oil outlet holes in the part to be tested that do not need to be subjected to a flow direction test. Then, the oil inlet mechanism (200) is opened to introduce the test medium into the oil inlet hole of the part to be tested. By observing whether the test medium sprayed from the oil outlet passes through the target hole (5011), it is detected whether the flow direction of the part to be tested meets the requirements.

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