Nozzle service life test bench

Abstract

The utility model relates to the technical field of engine manufacturing, in particular to a nozzle service life test bench, which comprises a rack (1). A fixed guide rail (3) and an observation box (8) are respectively arranged on the rack (1); a nozzle (7) is arranged on the fixed guide rail (3), and the fixed guide rail (3) is connected with a methanol pump (4); the observation box (8) is arranged at the bottom of the nozzle (7); the fixed guide rail is connected with a plurality of to-be-detected nozzles; the input end of the methanol pump is connected with the methanol storage tank, so that methanol is pressurized and pumped into the to-be-detected nozzle, sprayed out from the bottom of the to-be-detected nozzle and sprayed into the observation box; the working state of the nozzle can be observed through the observation box, and the sprayed methanol can be collected and reused through the observation box; key parameters such as flow, pressure and spraying angle of the nozzle can be monitored in real time, verification efficiency and accuracy are greatly improved, and cyclic utilization of methanol is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of engine manufacturing, in particular to a nozzle life test bench. Background Art

[0002] In the conventional process of product development and verification, the verification of parts often plays a pivotal role. For complex mechanical systems such as engines, the performance and reliability of parts are directly related to the operating efficiency and safety of the entire engine. Therefore, strict verification of engine parts is an essential step in the development stage.

[0003] In traditional methods, nozzle verification is usually achieved by installing it on the engine for testing; the advantage of this method is that it can simulate the actual working environment, thereby more accurately evaluating the performance of the nozzle; however, this method also has obvious disadvantages; first, due to the large size and complex structure of the engine, the installation and removal of the nozzle requires a lot of time and manpower; secondly, each verification requires starting the entire engine system, which not only increases energy consumption, but may also cause unnecessary wear and tear on the engine, and is relatively large in terms of resource consumption.

[0004] After searching, the applicant found that the Chinese patent document with publication number 117268745A disclosed a nozzle bracket assembly, a test bench and a test method for the nozzle assembly and transmission system on December 22, 2023, wherein the bracket assembly for the nozzle includes: a first bracket, including a first rotation center line and a first connection point, and the first bracket is rotatably connected to the nozzle at the first connection point; a second bracket, including a second rotation center line, and the second rotation center line intersects with the first rotation center line; a third bracket, including a third rotation center line, a second connection point and a third connection point, the third rotation center line is perpendicular to the second rotation center line, the third bracket is rotatably connected to the second bracket at the second connection point, and is connected to the nozzle at the third connection point; wherein the first bracket supports and drives the nozzle to rotate around the first rotation center line, and the second bracket supports and drives the nozzle to rotate together around the second rotation center line through the third bracket; the device also cannot solve the above-mentioned technical problems.

[0005] Therefore, in order to improve or solve at least one of the above problems, it is necessary to provide a nozzle life test bench that does not require testing on an engine. Utility Model Content

[0006] The utility model aims to provide a nozzle life test bench which does not need to perform an engine nozzle life test on the engine.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is: a nozzle life test bench, including a frame; the frame is respectively provided with a fixed guide rail and an observation box; the fixed guide rail is provided with a nozzle and is connected to a methanol pump; the observation box is arranged at the bottom of the nozzle.

[0008] The frame is provided with a test table; the test table is arranged between the fixed guide rail and the observation box.

[0009] The fixed guide rail comprises an infusion tube and a fixed rod; one end of the fixed rod is connected to the infusion tube; the other end of the fixed rod is connected to the test table; and the nozzle is arranged at the bottom of the infusion tube.

[0010] A nozzle joint is provided at the bottom of the infusion tube; one end of the nozzle joint is connected to the infusion tube; a U-shaped ferrule is provided at the other end of the nozzle joint; and the U-shaped ferrule is connected to the nozzle.

[0011] The bottom of the U-shaped sleeve is provided with a bending edge; the top of the nozzle is provided with a clamping groove; the bending edge is clamped in the clamping groove.

[0012] The test table is provided with a spray hole; the spray hole is communicated with the observation box; and the end of the nozzle is clamped in the spray hole.

[0013] An observation window is provided on one side of the observation box; a recovery box is provided at the bottom of the observation box; a connecting pipe is provided at the bottom of the observation box; and both ends of the connecting pipe are respectively connected with the observation box and the recovery box.

[0014] A mounting plate is provided on the frame; the methanol pump is arranged on the mounting plate; a pressure regulating valve is connected to one side of the frame, and an oil inlet nozzle is provided on the top of the fixed guide rail; the output end of the methanol pump is connected to the input end of the pressure regulating valve; and the input end of the pressure regulating valve is connected to the oil inlet nozzle.

[0015] A methanol filter is arranged on the frame, and the methanol filter is connected between the pressure regulating valve and the oil inlet nozzle.

[0016] A filter plate is arranged in the recovery box; and a plurality of nozzle joints are evenly distributed on the fixed guide rail.

[0017] The beneficial effects of this application are:

[0018] 1. The present application provides a rack and a test bench, and the fixed rails on the test bench are connected to multiple nozzles to be tested; a methanol pump and a pressure regulating valve are provided, and the input end of the methanol pump is connected to a methanol storage tank; thereby, methanol is pressurized and pumped into the nozzle to be tested, and sprayed from the bottom of the nozzle to be tested into an observation box; the working status of the nozzle can be observed through the observation window on the front side of the observation box, and the sprayed methanol can also be collected and reused through the observation box, and the key parameters of the nozzle, such as flow rate, pressure, spray angle, etc., can be monitored in real time, which greatly improves the efficiency and accuracy of verification.

[0019] And the methanol nozzle can be quickly verified by adjusting the injection frequency of the methanol nozzle, and low consumption life verification can be achieved. By building this small nozzle-specific test bench, engineers can verify a large number of nozzles in a short time, greatly shortening the product development cycle; at the same time, due to the reduction in the number of engine starts and wear, maintenance costs are also reduced; in addition, this verification method can also provide more detailed and accurate test data, providing strong support for product optimization and improvement.

[0020] 2. The present application provides multiple nozzle connectors, which can be quickly connected to the nozzles to be tested, thereby fixing the nozzles to be tested and supplying methanol to the nozzles to be tested.

[0021] 3. The present application provides a U-shaped ferrule, which can clamp and fix the nozzle joint and the nozzle to be tested, so as to facilitate the rapid disassembly and assembly of the nozzle to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of the nozzle life test bench.

[0024] Figure 2 This is the front cross-sectional view of the nozzle life test bench.

[0025] Figure 3 for Figure 1 An enlarged view of point A of the nozzle life test bench is shown.

[0026] Figure 4 This is a partial side sectional view of the nozzle connection of this nozzle life test bench.

[0027] The marks in the above figure are:

[0028] The markings in the figure are:

[0029] 1. Rack, 101, mounting plate,

[0030] 2. Test table,

[0031] 3. Fixed rail, 301. Infusion tube, 302. Fixed rod,

[0032] 4. Methanol pump, 5. Pressure regulating valve, 6. Nozzle connector,

[0033] 7. Nozzle, 701, slot,

[0034] 8. Observation box, 9. Observation window, 10. Injection hole, 11. Recovery box, 12. Methanol filter,

[0035] 13. U-shaped ferrule, 131. bent edge,

[0036] 14. Connecting pipe, 15. Filter plate, 16. Oil inlet nozzle, DETAILED DESCRIPTION

[0037] The following is a further detailed explanation of the specific implementation methods of the utility model through the description of the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the utility model and facilitating its implementation.

[0038] Figure 1 The nozzle life test bench shown includes a frame 1; a fixed guide rail 3 and an observation box 8 are respectively provided on the frame 1; a nozzle 7 is provided on the fixed guide rail 3 and is connected to a methanol pump 4; and the observation box 8 is arranged at the bottom of the nozzle 7.

[0039] The fixed guide rail 3 is connected to a plurality of nozzles 7 to be tested; the input end of the methanol pump 4 is connected to a methanol storage tank, so that methanol is pressurized and pumped into the nozzle 7 to be tested, and is sprayed out from the bottom of the nozzle 7 to be tested and sprayed into an observation box 8; the working state of the nozzle 7 can be observed through the observation box 8, and the sprayed methanol can also be collected and reused through the observation box 8; the key parameters of the nozzle 7, such as flow rate, pressure, spray angle, etc., can be monitored in real time, which greatly improves the efficiency and accuracy of verification and realizes the recycling of methanol.

[0040] A test bench 2 is provided on the frame 1; the test bench 2 is arranged between the fixed guide rail 3 and the observation box 8.

[0041] The test table 2 is a square plate and is fixedly connected to the frame 1; the fixed guide rail 3 is fixedly connected to the top of the test table 2; the observation box 8 is a square box with an open top; the observation box 8 is fixedly connected to the frame 1 and is arranged at the bottom of the test table 2.

[0042] The fixed rail 3 includes a liquid infusion tube 301 and a fixed rod 302 ; one end of the fixed rod 302 is connected to the liquid infusion tube 301 ; the other end of the fixed rod 302 is connected to the test table 2 ; and the nozzle 7 is arranged at the bottom of the liquid infusion tube 301 .

[0043] The infusion tube 301 is a hollow square tube; a connecting plate is provided on one side of the top of the infusion tube 301, a bolt hole is provided on the connecting plate, a bolt is provided in the bolt hole, and the bolt is connected to the top of the fixing rod 302; the fixing rod 302 is a cylindrical rod; the bottom of the fixing rod 302 is fixedly connected to the top surface of the test bench 2.

[0044] A nozzle joint 6 is provided at the bottom of the infusion tube 301 ; one end of the nozzle joint 6 is connected to the infusion tube 301 ; the other end of the nozzle joint 6 is provided with a U-shaped ferrule 13 ; the U-shaped ferrule 13 is connected to the nozzle 7 .

[0045] A plurality of nozzle connectors 6 are fixedly connected to the bottom of the infusion tube 301 ; a U-shaped sleeve 13 is provided at the bottom of the nozzle connector 6 , and the U-shaped sleeve 13 can realize stable connection of the nozzle 7 and rapid assembly and disassembly of the nozzle 7 .

[0046] A bending edge 131 is provided at the bottom of the U-shaped sleeve 13 ; a clamping groove 701 is provided at the top of the nozzle 7 ; and the bending edge 131 is clamped in the clamping groove 701 .

[0047] The top side of the nozzle 7 is provided with a slot 701 at one end; the bottom of the U-shaped sleeve 13 is provided with an L-shaped bending edge 131; the bending edge 131 cooperates with the slot 701 to clamp and fix the nozzle connector 6 and the nozzle 7 to be tested, so as to facilitate the rapid disassembly and assembly of the nozzle 7 to be tested.

[0048] The test table 2 is provided with a spray hole 10 ; the spray hole 10 is communicated with the observation box 8 ; the end of the nozzle 7 is clamped in the spray hole 10 .

[0049] The injection hole 10 is a through hole; the injection hole 10 is arranged on the test bench 2 and corresponds to the bottom position of the nozzle 7; the end of the nozzle 7 extends into the injection hole 10, so that methanol can be injected into the observation box 8 for test observation.

[0050] An observation window 9 is provided on one side of the observation box 8; a recovery box 11 is provided at the bottom of the observation box 8; a connecting pipe 14 is provided at the bottom of the observation box 8; both ends of the connecting pipe 14 are connected to the observation box 8 and the recovery box 11 respectively.

[0051] The observation window 9 is arranged on the front side of the observation box 8; the staff can observe the working status of the nozzle 7 through the observation window 9, and can monitor the key parameters of the nozzle 7 such as flow, pressure, spray angle, etc. in real time, which greatly improves the efficiency and accuracy of the verification; the recovery box 11 can collect the methanol sprayed in the test for recycling, which effectively saves the test cost.

[0052] A mounting plate 101 is provided on the frame 1; a methanol pump 4 is provided on the mounting plate 101; a pressure regulating valve 5 is connected to one side of the frame 1, and an oil inlet nozzle 16 is provided on the top of the fixed guide rail 3; the output end of the methanol pump 4 is connected to the input end of the pressure regulating valve 5; and the input end of the pressure regulating valve 5 is connected to the oil inlet nozzle 16.

[0053] The mounting plate 101 is a square plate, fixedly connected to the frame 1; the mounting plate 101 is arranged above the fixed guide rail 3; the methanol pump 4 is fixedly connected to the mounting plate 101; the pressure regulating valve 5 can accurately control the pressure and flow of the methanol pumped out by the methanol pump 4; and the nozzle 7 can be subjected to injection tests under different pressure and flow methanol conditions.

[0054] A methanol filter 12 is provided on the frame 1 , and the methanol filter 12 is connected between the pressure regulating valve 5 and the oil inlet nozzle 16 .

[0055] The methanol filter 12 is fixedly connected to the frame 1; the methanol filter 12 is connected to the pipeline between the pressure regulating valve 5 and the oil inlet nozzle 16; the methanol filter 12 can effectively remove impurities in the pipeline to ensure the purity of the methanol entering the nozzle 7 for testing.

[0056] A filter plate 15 is arranged in the recovery box 11 ; and a plurality of nozzle joints 6 are evenly distributed on the fixed guide rail 3 .

[0057] The filter plate 15 is disposed in the middle of the recovery box 11 and is capable of filtering the methanol flowing down from the connecting pipe 14 , thereby ensuring the purity of the recovered methanol.

[0058] The specific working process of the utility model is as follows:

[0059] A test bench 2 is arranged on a frame 1, and a plurality of nozzles 7 to be tested are connected to a fixed guide rail 3 on the test bench 2; an input end of the methanol pump 4 is connected to a methanol storage tank through a methanol pump 4 and a pressure regulating valve 5; methanol is pressurized and pumped into the nozzle 7 to be tested, and is sprayed out from the bottom of the nozzle 7 to be tested and sprayed into an observation box 8; the working state of the nozzle 7 can be observed through an observation window 9 on the front side of the observation box 8, and the sprayed methanol can also be collected and reused through the observation box 8, so that key parameters such as the flow rate, pressure, and spray angle of the nozzle 7 can be monitored in real time.

[0060] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A nozzle life test bench, characterized in that: The invention comprises a frame (1); a fixed guide rail (3) and an observation box (8) are respectively arranged on the frame (1); a nozzle (7) is arranged on the fixed guide rail (3) and is connected to a methanol pump (4); and the observation box (8) is arranged at the bottom of the nozzle (7).

2. A nozzle life test bench according to claim 1, characterized in that: The frame (1) is provided with a test table (2); the test table (2) is arranged between the fixed guide rail (3) and the observation box (8).

3. A nozzle life test bench according to claim 2, characterized in that: The fixed guide rail (3) comprises a liquid infusion tube (301) and a fixed rod (302); one end of the fixed rod (302) is connected to the liquid infusion tube (301); the other end of the fixed rod (302) is connected to the test table (2); and the nozzle (7) is arranged at the bottom of the liquid infusion tube (301).

4. A nozzle life test bench according to claim 3, characterized in that: A nozzle joint (6) is provided at the bottom of the infusion tube (301); one end of the nozzle joint (6) is in communication with the infusion tube (301); a U-shaped ferrule (13) is provided at the other end of the nozzle joint (6); and the U-shaped ferrule (13) is connected to the nozzle (7).

5. A nozzle life test bench according to claim 4, characterized in that: The bottom of the U-shaped sleeve (13) is provided with a bent edge (131); the top of the nozzle (7) is provided with a clamping groove (701); and the bent edge (131) is clamped in the clamping groove (701).

6. A nozzle life test bench according to any one of claims 4-5, characterized in that: The test table (2) is provided with a spray hole (10); the spray hole (10) is connected to the observation box (8); and the end of the nozzle (7) is clamped in the spray hole (10).

7. A nozzle life test bench according to claim 6, characterized in that: An observation window (9) is provided on one side of the observation box (8); a recovery box (11) is provided at the bottom of the observation box (8); a connecting pipe (14) is provided at the bottom of the observation box (8); and both ends of the connecting pipe (14) are respectively connected to the observation box (8) and the recovery box (11).

8. A nozzle life test bench according to claim 7, characterized in that: The frame (1) is provided with a mounting plate (101); the methanol pump (4) is arranged on the mounting plate (101); a pressure regulating valve (5) is connected to one side of the frame (1), and an oil inlet nozzle (16) is provided on the top of the fixed guide rail (3); the output end of the methanol pump (4) is connected to the input end of the pressure regulating valve (5); and the input end of the pressure regulating valve (5) is connected to the oil inlet nozzle (16).

9. A nozzle life test bench according to claim 8, characterized in that: A methanol filter (12) is provided on the frame (1), and the methanol filter (12) is connected between the pressure regulating valve (5) and the oil inlet nozzle (16).

10. A nozzle life test bench according to any one of claims 7 to 9, characterized in that: A filter plate (15) is provided in the recovery box (11); and a plurality of nozzle joints (6) are evenly distributed on the fixed guide rail (3).

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