Nozzle flow direction test fixture and method

Abstract

The application discloses a nozzle flow direction test fixture and method, which comprises a clamping mechanism for clamping and positioning a part to be tested, an oil inlet mechanism for feeding test medium into the part to be tested, a test mounting seat for mounting a flow test tool or a flow direction test tool, and a plugging mechanism for plugging an oil outlet hole on the part to be tested which does not need to be measured, the oil inlet mechanism is fixedly installed on a support seat, the test mounting seat is arranged in the part to be tested and is fixed on a central shaft of the support seat, the flow test tool comprises an oil inlet copper pipe arranged in the test mounting seat and used for connecting the test medium, a measuring cup communicated with the oil inlet 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 on a preset position of the test mounting seat, and a target hole is arranged in the measuring block at the preset position; and the plugging mechanism is arranged above the part to be tested. The application can effectively improve the accuracy of the test, is convenient to assemble and disassemble, and is high in efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aero-engine part inspection, in particular, to a nozzle flow direction test fixture. Furthermore, the present application also relates to a nozzle flow direction test method comprising the nozzle flow direction test fixture. BACKGROUND

[0002] An aero-engine has a complete oil system to lubricate, cool, clean and anticorrosion of designated components. Whether the oil system can work normally directly affects the working performance and service life of the engine. The oil nozzle is an important component of the oil system. Oil enters the oil nozzle from the oil inlet hole, and then is sprayed from the oil outlet holes distributed on the oil nozzle, so that a certain flow of oil is sprayed towards the designated components to achieve cooling and lubrication. Therefore, during the machining process of the oil nozzle and bearing seat and other parts, the flow direction test of the machined oil outlet hole is needed to detect whether the oil outlet hole can spray a certain flow of medium to the designated position under the fixed medium, pressure range and temperature range, so as to judge whether the flow capacity and oil injection direction meet the use requirements.

[0003] Before the flow direction test of the machined oil outlet hole, a fixture is needed to fix the tested part. However, the traditional fixture is a simple support, which only fixes the tested part by fastening screws. During the test process, the nozzle is easy to shake under the impact of liquid flow, which causes the spray head to deviate from the horizontal downward centering position, affecting the measurement of the spray angle. Especially when the shaking is severe, the worker has to hold the nozzle by hand, which is not conducive to data collection. Moreover, the part is difficult to assemble and replace, which leads to a large proportion of the product assembly time in the single nozzle test cycle, long product test cycle, low test efficiency and lagging nozzle test cycle.

[0004] In the prior art, the flow test of the nozzle adopts manual visual inspection, that is, the nozzle and the matching tooling are preassembled before the test, the oil pressure is set, the lubricating oil with appropriate parameters is delivered into the oil outlet hole and sprayed through the pipeline on the tooling during the test, the lubricating oil sprayed by each oil outlet hole is collected into a measuring cup, the collection time is fixed by the stopwatch reading, and the volume of the sprayed lubricating oil at the fixed time is read on the measuring cup to detect the flow size. This manual visual inspection method basically meets the product quality detection requirements. However, the stopwatch reading and the measuring cup reading both have certain errors, which may cause quality problems, and the detection accuracy of the nozzle flow direction is low. At present, the flow direction test of the nozzle is usually performed by observing whether the oil column sprayed by the oil outlet hole 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 existing flow direction test method has good accuracy, it needs to be matched with the tooling, which is inconvenient and time-consuming and labor-consuming in collecting the sprayed oil. SUMMARY

[0005] The present application provides a nozzle flow direction test fixture and method to solve the technical problem of time-consuming, labor-intensive and large error in nozzle flow direction test caused by inconvenient clamping of the nozzle in the prior art.

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

[0007] An oil inlet mechanism is fixedly installed on the support seat and used for passing test medium into the to-be-tested part;

[0008] A test mounting seat is provided in the to-be-tested part and fixed on the central shaft of the support seat, and is used for installing flow test tools and flow direction test tools to respectively perform flow test and flow direction test on the to-be-tested part. The flow test tools include an oil receiving copper pipe provided in the test mounting seat and corresponding to the oil outlet hole of the to-be-tested part, a measuring cup in communication with the oil receiving copper pipe, and a flow detection device provided at the bottom of the measuring cup. The flow direction test tools include a measuring block fixed at a predetermined position on the test mounting seat, and a target hole is provided in the measuring block at the predetermined position.

[0009] A plugging mechanism is coaxially arranged above the to-be-tested part and fixed on the to-be-tested part, and is used for plugging the oil outlet hole and / or the oil receiving copper pipe which do not need to be tested for flow and flow direction.

[0010] Further, the support seat includes a support disc and a support leg fixed at the bottom of the support disc, a positioning groove for clamping the to-be-tested part is provided in the support disc, and the fixing member is arranged at the outer periphery of the positioning groove.

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

[0012] Further, the fixing member includes a pressing plate for covering the to-be-tested part and an angular pin for positioning the pressing plate on the support disc, the angular pin is sequentially provided in the pressing plate and the support disc along the axial direction and fixedly connected with the pressing plate and the support disc.

[0013] Further, the oil inlet mechanism includes a pipe joint mounting seat fixed on the support disc, a pipe joint movably provided in the pipe joint mounting seat, and a locking nut for locking the pipe joint on the pipe joint mounting seat, the locking nut is sleeved on the outside of the pipe joint and threadedly connected with the pipe joint.

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

[0015] Further, the test mounting base comprises a stand column arranged on the central axis of the positioning groove and fixedly connected with the support disc, and a mounting disc fixed to the upper end of the stand column, the mounting disc is coaxially arranged with the part to be tested and axially provided with a plurality of mounting holes;

[0016] The oil receiving copper pipe is sequentially arranged in the mounting disc and the support disc through the mounting holes and is fixed with the mounting disc.

[0017] Further, the flow test device further comprises a guide oil copper pipe for receiving the test medium in the oil outlet hole of the part to be tested which does not need to be tested and / or for connecting the target hole to receive the test medium through the target hole, the guide oil copper pipe is sequentially arranged in the mounting disc and the support disc through the mounting holes and is fixed with the mounting disc.

[0018] Further, the flow detection device comprises 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 with the weight sensor.

[0019] Further, one end of the oil receiving copper pipe and the guide oil copper pipe away from the oil outlet hole of the part to be tested is fixed with a connecting hose for guiding the test medium.

[0020] Further, the plugging mechanism comprises a plugging disc coaxially arranged with the part to be tested and a pressing plug fixedly installed on the plugging disc, the plugging disc is arranged above the part to be tested and is detachably fixedly connected with the part to be tested, and the diameter of the pressing plug is matched with the inner diameter of the oil outlet hole of the part to be tested and the oil receiving copper pipe.

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

[0022] S1: coaxially sleeving the part to be tested on the outside of the test mounting base, placing it on the support seat so that it is clamped by the support seat, and then pressing the fixing member on the outer ring at the bottom of the part to be tested and fixing it on the support seat, so as to realize the clamping and positioning of the part to be tested;

[0023] S2: adjusting the position of the oil inlet mechanism to correspond to the oil inlet hole of the part to be tested, and simultaneously arranging and fixing the plugging mechanism above the part to be tested;

[0024] S3: when the flow test is carried out on the tested part by using the clamp, a flow measurement tool is used, specifically, the oil receiving copper pipe is sequentially arranged in the test mounting seat and the support seat along the axial direction, the position of the oil receiving copper pipe is adjusted and fixed, one end of the oil receiving copper pipe corresponds to the oil outlet hole of the tested part, the other end of the oil receiving copper pipe is communicated with the measuring cup, then the plugging mechanism is used to plug the oil outlet hole of the tested part which does not need to be tested, then the oil inlet mechanism is opened to introduce the test medium into the oil inlet hole of the tested part, so that the test medium is sprayed into the oil receiving copper pipe from the oil outlet hole and flows into the measuring cup, and the flow test result is obtained through the flow detection equipment;

[0025] S4: when the flow direction test is carried out on the tested part by using the clamp, a flow direction measurement tool is used, specifically, the measuring block is installed at the preset position on the test mounting seat, then the plugging mechanism is used to plug the oil outlet hole of the tested part which does not need to be tested, then the oil inlet mechanism is opened to introduce the test medium into the oil inlet hole of the tested part, whether the test medium sprayed from the oil outlet hole passes through the target hole on the measuring block is observed to detect whether the flow direction of the tested part meets the requirements.

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

[0027] The nozzle flow direction test fixture and method of the present application, the clamping mechanism of the fixture is matched with the fixing piece through the support base to stably clamp the part to be tested, 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, time-saving and labor-saving, stable and accurate in positioning; the oil inlet mechanism is installed on the support base and arranged outside the part to be tested, so that the oil inlet hole of the part to be tested is correspondingly arranged with the oil inlet mechanism to deliver the test medium, and the oil inlet mechanism and the clamping mechanism are integrated, which is convenient and easy to transport and use; the test mounting seat is arranged on the center shaft of the support base and penetrates into the inner cavity of the part to be tested, and the flow test tool or the flow direction test tool is installed on the test mounting seat to respectively test the flow or the flow direction of the part to be tested, so that the test mounting seat can install and position the flow test tool or the flow direction test tool, and the oil outlet hole of the part to be tested is correspondingly arranged, thereby reducing repeated clamping of the part and improving the accuracy of the test; the flow test tool uses a measuring cup and a flow detection device for measurement, which can effectively reduce the error caused by visual reading compared with the visual method in the prior art, the flow direction test tool uses a target hole arranged on a measuring block, and whether the test medium sprayed from the oil outlet hole passes through the target hole can be observed to determine whether the flow direction meets the requirements, the measuring block is fixedly installed at a preset position of the test mounting seat, thereby avoiding 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 spraying range, thereby being high in accuracy; the plugging mechanism is coaxially arranged with the part to be tested and fixed above the part to be tested, so that the plugging mechanism can plug the oil outlet hole which does not need to be tested for flow or flow direction, and is suitable for the part to be tested with multiple complex oil outlet holes and has certain universality.

[0028] In addition to the objects, features and advantages described above, the present application has other objects, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings constituting a part of the present application are used to provide a further understanding of the present application, the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0030] Figure 1 is a cross-sectional view of the nozzle flow direction test fixture of the preferred embodiment of the present application during flow test; Figure 1-1 ;

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

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

[0033] Figure 4 is a cross section of the nozzle flow direction test fixture of the preferred embodiment of the present application when conducting a flow direction test

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

[0035] Legend:

[0036] 100, clamping mechanism; 101, support base; 1011, support disc; 1012, support leg; 1013, connecting frame; 1014, fixed frame; 102, fixed part; 1021, pressing plate; 1022, angular pin; 200, oil feeding mechanism; 201, pipe joint mounting base; 202, pipe joint; 203, locking nut; 300, test mounting base; 301, stand; 302, mounting disc; 400, flow test tool; 401, oil receiving copper pipe; 402, measuring cup; 403, flow detection equipment; 500, flow direction test tool; 501, measuring block; 5011, target hole; 502, oil guiding copper pipe; 600, plugging mechanism; 601, plugging disc; 602, pressing plug. DETAILED DESCRIPTION

[0037] The embodiments of the present application are described in detail below with reference to the accompanying drawings, but the present application can be implemented in various different ways as defined and covered by the following.

[0038] As Figure 1 and Figure 3The nozzle flow direction test fixture of the embodiment is used for firmly clamping a part to be tested to perform a flow direction test. In the 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. The positioning ring and the end of the casing away from the base are both provided with angular holes. The nozzle is arranged on the inner wall of the casing. An oil outlet hole is axially arranged in the nozzle. An oil inlet hole is arranged on the outer wall of the casing. The oil outlet hole and the oil inlet hole form an oil passage in communication. 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 passage in the casing, a test mounting seat 300 for mounting a flow test tool 400 or a flow direction test tool 500, and a plugging mechanism 600 for plugging the oil outlet hole of the nozzle in the casing that does not need to be measured. The clamping mechanism 100 includes a support seat 101 for supporting and clamping the positioning ring of the casing and a fixing piece 102 for pressing and fixing the positioning ring of the casing on the support seat 101. The fixing piece 102 is arranged on the outer periphery of the positioning ring of the casing and is fixedly mounted on the support seat 101. The casing is firmly clamped by the cooperation of the support seat 101 and the fixing piece 102, so that the nozzle remains stable during the flow direction test. Meanwhile, the clamping mechanism 100 can position the casing through the angular holes on the positioning ring of the casing. The clamping is convenient, time-saving and labor-saving, and has high stability and accurate positioning. Preferably, a plurality of fixing pieces 102 are arranged along the radial direction of the positioning ring to realize the circumferential positioning of the positioning ring. The oil inlet mechanism 200 is fixedly mounted on the support seat 101 and is used for communicating with the oil inlet hole of the casing to introduce the test medium into the oil passage. The test mounting seat 300 is arranged in the inner cavity of the casing and is fixedly arranged on the central shaft of the support seat 101. The test mounting seat 300 is used for mounting the flow test tool 400 and the flow direction test tool 500 to perform flow test and flow direction test on the nozzle in the casing, respectively. The flow test tool 400 includes an oil receiving copper pipe 401 arranged in the test mounting seat 300 and corresponding to the oil outlet hole of the casing, a measuring cup 402 in communication with the oil receiving copper pipe 401, and a flow detection device 403 arranged at the bottom of the measuring cup 402. The flow test tool 400 uses the measuring cup 402 and the flow detection device 403 to perform measurement. Compared with the visual method in the prior art, the flow test tool 400 can effectively reduce the error caused by visual reading. The flow direction test tool 500 includes a measuring block 501 fixed to the test mounting seat 300. The measuring block 501 is arranged at a predetermined position on the test mounting seat 300. A target hole 5011 is arranged in the measuring block 501. The target hole 5011 is a waist-shaped hole. The position and size of the measuring block 501 and the target hole 5011 are set according to the purpose and theoretical jet range of the nozzle. Therefore, whether the flow direction of the test medium sprayed from the oil outlet hole of the nozzle meets the requirements can be judged by observing whether the test medium passes through the target hole 5011, thereby avoiding test errors caused by repeated clamping and having high accuracy.By installing the flow test tool 400 or the flow direction test tool 500 on the test mounting seat 300 to respectively perform flow or flow direction test on the nozzle, the positioning of the flow test tool 400 or the flow direction test tool 500 and the oil outlet hole in the nozzle can be realized, the repeated clamping of parts is reduced, and the accuracy of the test is improved. The plugging mechanism 600 is coaxially arranged with the casing and fixed to the end of the casing away from the base, is positioned through the angular hole on the casing, and is used for plugging the oil outlet hole and / or the oil receiving copper pipe 401 which do not need to be tested for flow and flow direction. The plugging mechanism 600 is suitable for the casing with multiple complex nozzles and has a certain universality.

[0039] As shown in Figure 1 , Figure 3 and Figure 4 , the support seat 101 includes a support disc 1011 and a support leg 1012, and the support leg 1012 is fixedly installed at the bottom of the support disc 1011 for supporting the support disc 1011. Specifically, the support disc 1011 is provided with a positioning groove, the shape and size of the positioning groove are matched with the positioning ring at the end of the casing, and the positioning groove is used for placing and clamping the positioning ring of the casing. A center hole is formed in the positioning groove, and a connecting rod is arranged in the center hole. The connecting rod is fixed to the support disc 1011 for installing the test mounting seat 300. The test mounting seat 300 is arranged at the center axis of the center hole and is fixedly connected with the connecting rod. The fixing member 102 is arranged radially at the outer periphery of the positioning groove and is fixedly installed on the mounting plate, so as to press the positioning ring of the casing in the positioning groove, and the casing is stably clamped on the support disc 1011 through cooperation with the support disc 1011. Preferably, the support disc 1011 is circular. Alternatively, the support disc 1011 can also be a square plate or a special-shaped plate. Alternatively, the outer periphery of the support disc 1011 is provided with mounting plates, a plurality of mounting plates are arranged radially along the support disc 1011, and the fixing member 102 can also be fixedly installed on the mounting plate, so as to press the annular plate of the casing in the positioning groove to clamp the casing.

[0040] Preferably, the height of the support leg 1012 is greater than the height of the measuring cup 402 and the flow test equipment, so as to lift the support disc 1011, and facilitate placing the measuring cup 402 and the flow test equipment at the bottom of the support disc 1011. Preferably, the support mechanism further includes a fixing frame 1014 arranged at the side of the support seat 101. The fixing frame 1014 is vertically arranged and fixedly installed on the support disc 1011. The fixing frame 1014 is provided with a connecting member for fixedly connecting with an external wall or a vertical structure to enhance the stability of the support mechanism and prevent the support seat 101 from falling. Alternatively, a lifting ring is fixedly installed on the support disc 1011, so as to facilitate cooperation with external lifting equipment for transfer.

[0041] As shown in Figure 1 , Figure 3 and Figure 4As shown, the fixing member 102 comprises a pressing plate 1021 and an angular pin 1022, the pressing plate 1021 is arranged along the axial direction of the positioning groove at the outer periphery of the positioning groove and is fixedly connected with the support disc 1011 by fastening screws, for pressing and fixing the case in the positioning groove; the connecting line of the central axis of the angular pin 1022 and the positioning groove center axis is the positioning reference axis, the support disc 1011 is provided with a positioning hole for allowing the angular pin 1022 to pass through, and the positioning hole is correspondingly arranged with the angular hole on the positioning ring of the case, for positioning the case. In use, the positioning ring of the case is clamped in the positioning groove, and the angular hole on the positioning ring is corresponded with the positioning hole on the support disc 1011, and then the angular pin 1022 is sequentially passed through the angular hole and the positioning hole to realize the positioning of the case, and finally the pressing plate 1021 is covered on the upper end of the positioning ring, and the fastening screws are tightened to firmly clamp the case.

[0042] As shown in Figure 1 As shown, the oil inlet mechanism 200 comprises a pipe joint 202 for inputting test medium to the oil way in the case, 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 disc 1011, and the end away from the support disc 1011 is provided with a mounting groove, the pipe joint 202 is movably passed through the mounting groove, the outer wall of the pipe joint 202 is provided with external threads, and the locking nut 203 is sleeved on the outside of the pipe joint 202 and is threadedly connected with the external threads of the pipe joint 202, so that the pipe joint 202 can be locked on the pipe joint mounting seat 201 by rotating the locking nut 203, and the pipe joint 202 can be moved towards or away from the case to adjust the distance between the pipe joint 202 and the case and make the pipe joint 202 correspond to the oil inlet hole on the case. Preferably, the pipe joint mounting seat 201 comprises a first supporting plate perpendicular to the support disc 1011 and a second supporting plate inclined to the support disc 1011, one end of the first supporting plate is fixed on the support disc 1011 and the other end is fixedly connected with the second supporting plate, and the mounting groove is provided on the second supporting plate, so that the pipe joint 202 passing through the mounting groove is also inclined, which is convenient for corresponding with the oil inlet hole on the case; alternatively, the second supporting plate is hingedly connected with the first supporting plate, so that the pipe joint 202 mounted on the second supporting plate can be adjusted in angle, improving flexibility.

[0043] One end of the pipe joint 202 is used for communication with the test medium device, and the other end is used for communication with the oil inlet hole of the cartridge, so that when the flow or flow direction test of the nozzle is started, the test medium can be delivered into the oil inlet hole through the pipe joint 202 to enter the oil circuit. Preferably, a sealing element is arranged between the pipe joint 202 and the oil inlet hole, and the sealing element is fixedly installed at the end of the pipe joint 202 for sealing between the oil inlet hole and the pipe joint 202, preventing leakage of the test medium from the connection between the pipe joint 202 and the oil inlet hole.

[0044] As shown in Figure 1 and Figure 3 , the test mounting seat 300 includes a column 301 and a mounting disc 302, the column 301 is arranged on the central shaft of the support disc 1011 and is fixedly connected with the connecting frame 1013 in the support, and the mounting disc 302 is arranged at the upper end of the column 301 and is fixedly connected with the column 301. The mounting disc 302 is coaxially arranged with the cartridge and is provided with a plurality of mounting holes in the axial direction, which are used for connecting the flow test tool 400 or the flow direction test tool 500.

[0045] When the flow test tool 400 is connected, the oil receiving copper pipe 401 is sequentially arranged in the mounting hole of the mounting disc 302 and the support disc 1011 in the axial direction and is fixed with the mounting disc 302, and one end of the oil receiving copper pipe 401 is arranged corresponding to the oil outlet hole of the nozzle, and the other end extends towards the lower side of the support disc 1011 and is in communication with the measuring cup 402, so that the test medium sprayed from the oil outlet hole of the nozzle can be received by the joint copper pipe, and the test medium is delivered into the measuring cup 402, and then the flow measurement of the nozzle is realized through the flow test device at the bottom of the measuring cup. Preferably, the outer wall of the oil receiving copper pipe 401 is provided with external threads, and the mounting hole is provided with internal threads matched with the external threads for threaded connection, and the oil receiving copper pipe 401 can be fixed in the mounting basin through the threaded connection with the mounting hole; alternatively, the oil receiving copper pipe 401 can also be movably arranged in the mounting hole, and a fastening screw is installed on the side wall of the mounting disc 302 to abut the oil receiving copper pipe 401 in the mounting disc 302. Preferably, in the embodiment, the number of mounting holes and oil receiving copper pipes 401 is 7, which is corresponding to the number of nozzles for flow test.

[0046] As shown in Figure 3 , Figure 4 and Figure 5As shown, the flow direction test tool 500 is used to test the flow direction of the nozzle positioned in the cartridge on the clamping mechanism 100, including the measuring block 501 provided with the target hole 5011. When the flow direction test of the nozzle is needed, the measuring block 501 is fixed on the mounting disc 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 whether the flow direction of the test medium sprayed from the oil outlet hole of the nozzle meets the requirements can be judged by observing whether the test medium passes through the target hole 5011. Preferably, in the present embodiment, the measuring block 501 is provided with 5 on the mounting disc 302. The flow direction test tool 500 further includes the oil guide copper pipe 502, which is sequentially arranged in the mounting disc 302 and the support disc 1011 through the mounting hole and is fixed with the mounting disc 302. On the one hand, the oil guide copper pipe 502 can be connected with the oil outlet hole of the nozzle which does not need to be tested for flow direction, so as to guide the test medium in it out, prevent it from being sprayed to the target hole 5011 on the measuring block 501, and avoid interference with the flow direction test. On the other hand, for the nozzle with pass rate requirement, the oil guide copper pipe 502 can be installed behind the target hole 5011 and communicated with the target hole 5011, so as 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 condition. Preferably, the oil guide copper pipe 502 is provided with 2.

[0047] As Figure 1 and Figure 2As shown in the flow test tool 400, the flow detection device 403 is connected to the oil receiving copper pipe 401 away from the nozzle and / or the measuring cup 402, the flow detection device 403 comprises a weight sensor arranged at the bottom of the measuring cup 402 for measuring the weight of the test medium in the measuring cup 402, and a detector electrically connected to the weight sensor for calculating and displaying the flow measurement result. Preferably, a connecting hose is fixed to the end of the oil receiving copper pipe 401 away from the oil outlet hole of the nozzle for guiding the test medium to flow into the measuring cup 402 for flow detection. Alternatively, the oil receiving copper pipe 401 can also be directly connected to the measuring cup 402. When the flow test tool 400 is installed for flow test of the nozzle, the test medium is introduced into the oil circuit through the pipe joint, and the test medium in the oil circuit flows into the nozzle through the oil outlet hole and is sprayed into the oil receiving copper pipe 401, the end of each oil receiving copper pipe 401 close to the nozzle corresponds to the oil outlet hole of the nozzle to receive the test medium sprayed from the oil outlet hole of each nozzle to the connecting hose, and the test medium is received from the connecting hose to the measuring cup 402, 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, and the detector can analyze and calculate the weight of the test medium in the measuring cup 402 in a fixed time according to the density of the test medium to obtain the volume of the test medium that can be sprayed from the oil outlet hole of each nozzle under a certain pressure and temperature in a fixed time, i.e. the flow test of the nozzle is completed.

[0048] As shown in Figure 1 and Figure 2 The plugging mechanism 600 comprises a plugging disc 601 and a compression plug 602 fixedly installed on the plugging disc 601, the plugging disc 601 is provided with a positioning disc on the side connected to the casing, the outer diameter of the positioning disc is matched with the inner diameter of the end of the casing away from the base, so that the positioning disc can be arranged in the casing to realize coaxial positioning with the casing, and an angular pin 1022 is installed on the plugging disc 601, which is arranged corresponding to the angular hole of the end of the casing away from the base, to realize positioning of the plugging disc 601 and the casing, and ensure that the compression plug 602 fixedly installed on the plugging disc 601 corresponds to the position of the nozzle, so as to facilitate plugging. The diameter of the compression plug 602 is matched with the inner diameter of the oil outlet hole of the nozzle and the oil receiving copper pipe 401, so as to plug the oil outlet hole and the oil receiving copper pipe 401 which do not need to be tested for flow or flow direction. Preferably, in this embodiment, the number of compression plugs 602 is three, which can meet the plugging of the excess nozzles, and avoid cross winding caused by too many compression plugs 602.

[0049] According to one aspect of the present application, a nozzle flow and flow direction test method using the nozzle flow and flow direction test fixture is also provided, 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 to be 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 is fixed on the support seat 101, so that the part to be tested is clamped and positioned;

[0051] S2: adjust the position of the oil inlet mechanism 200 to correspond to the oil inlet hole of the part to be tested, and cover and fix the plugging mechanism 600 above the part to be tested;

[0052] S3: when the flow test of the part to be tested is carried out by using the clamp, the flow measuring tool is used, specifically, the oil receiving copper pipe 401 is sequentially arranged in the test mounting seat 300 and the support seat 101 along the axial direction, the position of the oil receiving copper pipe 401 is adjusted and fixed, one end of the oil receiving copper pipe 401 corresponds to the oil outlet hole of the part to be tested, the other end of the oil receiving copper pipe 401 communicates with the measuring cup 402, then the plugging mechanism 600 plugs the oil outlet hole of the part to be tested which does not need to be tested, 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 into the oil receiving copper pipe 401 from the oil outlet hole and flows into the measuring cup 402, and the flow test result is obtained by the flow detection equipment 403;

[0053] S4: when the flow direction test of the part to be tested is carried out by using the clamp, the flow direction measuring tool is used, specifically, the measuring block 501 is installed at the preset position on the test mounting seat 300, then the plugging mechanism 600 plugs the oil outlet hole of the part to be tested which does not need to be tested, 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, whether the test medium sprayed from the oil outlet hole passes through the target hole 5011 on the measuring block 501 is observed to detect whether the flow direction of the part to be tested meets the requirements.

[0054] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A nozzle flow direction test fixture, characterized by, The utility model relates to a test device for testing flow rate and flow direction of oil outlet hole of oil pump, comprising: A clamping mechanism (100) comprising a support seat (101) for supporting and clamping the tested part and a fixing part (102) for pressing and fixing the tested part on the support seat (101), the fixing part (102) is fixedly installed on the support seat (101) along the circumference of the tested part, the support seat (101) comprises a support disc (1011), and a positioning groove for clamping the tested part is formed in the support disc (1011); An oil inlet mechanism (200) is fixedly installed on the support seat (101) and used for feeding test medium into the tested part; A test mounting seat (300) is arranged in the tested part and fixedly arranged on the central shaft of the support seat (101), and is used for mounting a flow rate test tool (400) and a flow direction test tool (500) to respectively perform flow rate test and flow direction test on the tested part, the flow rate test tool (400) comprises an oil receiving copper pipe (401) arranged in the test mounting seat (300) and corresponding to the oil outlet hole of the tested part, a measuring cup (402) in communication with the oil receiving copper pipe (401), and a flow detection device (403) arranged at the bottom of the measuring cup (402), and the flow direction test tool (500) comprises a measuring block (501) fixedly arranged at a predetermined position on the test mounting seat (300), and a target hole (5011) is formed in the measuring block (501) at a predetermined position; A plugging mechanism (600) is coaxially arranged with the tested part and fixedly arranged above the tested part, and is used for plugging the oil outlet hole and / or the oil receiving copper pipe (401) which do not need to be tested in flow rate and flow direction; The fixing part (102) comprises a pressing plate (1021) for covering and fixing on the tested part and an angular pin (1022) for positioning the pressing plate (1021) on the support disc (1011), the angular pin (1022) is correspondingly arranged with the angular hole of the tested part and sequentially arranged in the pressing plate (1021) and the support disc (1011) along the axial direction; The test mounting seat (300) comprises a stand column (301) arranged on the central shaft of the positioning groove and fixedly connected with the support disc (1011) and a mounting disc (302) fixedly arranged at the upper end of the stand column (301), the mounting disc (302) is coaxially arranged with the tested part and axially provided with a plurality of mounting holes; The oil receiving copper pipe (401) is sequentially arranged in the mounting disc (302) and the support disc (1011) through the mounting holes and fixed with the mounting disc (302); The flow direction test tool (500) further comprises an oil guide copper pipe (502) for receiving test medium in the oil outlet hole of the tested part which does not need to be tested in flow direction and / or for communicating with the target hole (5011) to receive test medium passing through the target hole (5011), and the oil guide copper pipe (502) is sequentially arranged in the mounting disc (302) and the support disc (1011) through the mounting holes and fixed with the mounting disc (302).

2. The nozzle flow direction test fixture according to claim 1, characterized in that, the support base (101) further comprises a support leg (1012) fixed to the bottom of the support disc (1011), and the fixing member (102) is arranged on the outer periphery of the positioning groove; the height of the support leg (1012) is greater than the height of the measuring cup (402).

3. The nozzle flow direction test fixture according to claim 1, characterized in that, the oil inlet mechanism (200) comprises a pipe joint mounting seat (201) fixed to the support disc (1011), a pipe joint (202) movably arranged in the pipe joint mounting seat (201), and a locking nut (203) for locking the pipe joint (202) to the pipe joint mounting seat (201), the locking nut (203) being sleeved on the outside of the pipe joint (202) and being threadedly connected with the pipe joint (202); one end of the pipe joint (202) is used for communicating with the test medium equipment, and the other end is used for communicating with the oil inlet hole of the part to be tested.

4. The nozzle flow direction test fixture according to claim 1, characterized in that, the flow detection device (403) comprises 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 results, the weight sensor being arranged on the bottom of the measuring cup (402), and the detector being electrically connected with the weight sensor.

5. The nozzle flow direction test fixture according to claim 1, characterized in that, one end of the oil receiving copper pipe (401) and the oil guide copper pipe (502) away from the oil outlet hole of the part to be tested is fixed with a connecting hose for guiding the test medium.

6. The nozzle flow direction test fixture according to claim 1, characterized in that, the plugging mechanism (600) comprises a plugging disc (601) coaxially arranged with the part to be tested and a compression plug (602) fixedly installed on the plugging disc (601), the plugging disc (601) is arranged above the part to be tested and is detachably fixedly connected with the part to be tested, and the diameter of the compression plug (602) is matched with the inner diameter of the oil outlet hole of the part to be tested and the oil receiving copper pipe (401).

7. A nozzle flow direction test method using the nozzle flow direction test jig according to any one of claims 1 to 6, characterized by, comprising the following steps: S1: sleeving the part to be tested outside the test mounting seat (300), and clamping it in the support base (101), and then pressing the fixing member (102) 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) to correspond to the oil inlet hole of the part to be tested, and simultaneously arranging and fixing the plugging mechanism (600) above the part to be tested; S3: when the flow test is performed on the part to be tested by using the clamp, the flow test tool (400) is used, specifically, the oil receiving copper pipe (401) is sequentially arranged in the test mounting seat (300) and the support seat (101) along the axial direction, the position of the oil receiving copper pipe (401) is adjusted and fixed, one end of the oil receiving copper pipe (401) corresponds to the oil outlet hole of the part to be tested, the other end of the oil receiving copper pipe (401) communicates with the measuring cup (402), then the plugging mechanism (600) is used to plug the oil outlet hole of the part to be tested which does not need to be tested, then the oil inlet mechanism (200) is opened to introduce the test medium into the oil outlet hole of the part to be tested, so that the test medium is sprayed from the oil outlet hole into the oil receiving copper pipe (401) and flows into the measuring cup (402), and the flow test result is obtained by the flow detection device (403); S4: when the flow direction test is performed on the part to be tested by using the clamp, the flow direction test tool (500) is used, specifically, the measuring block (501) is installed on the test mounting seat (300) at a predetermined position, then the plugging mechanism (600) is used to plug the oil outlet hole of the part to be tested which does not need to be tested, then the oil inlet mechanism (200) is opened to introduce the test medium into the oil outlet hole of the part to be tested, whether the test medium sprayed from the oil outlet hole passes through the target hole (5011) is observed to detect whether the flow direction of the part to be tested meets the requirements.

Images