A test bench and its usage method

Abstract

A test bench for measuring the flow rate of the injection nozzle of an injection ring, comprising a base frame, a water flow rate test bench collection device, and a water flow rate test bench tooling. The water flow rate test bench tooling is arranged inside the base frame, and the water flow rate test bench collection device is arranged on the side of the base frame. The test bench of the present invention is used to measure the flow rate of the injection nozzle of the injection ring, with a reasonable overall design, effectively realizing the collection of the flow rate of the injection nozzle of the injection ring, having a high collection efficiency, complete collection, and high weighing accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of engine tests, specifically to a test bench and its usage method, especially for engine fuel injection ring tests. Background Art

[0002] Fuel injection rings and fuel injectors are important components of aerospace engines. For different fuel injection rings, measuring the flow rate of aviation kerosene inside the fuel injection ring under a predetermined pressure is one of the key parameters in the test. In the prior art, usually, liquid water is injected into the fuel injection ring, and the flow rate of the water is measured and then converted into the flow rate of the aviation kerosene in the fuel injection ring. However, the existing water flow test benches have problems such as low collection efficiency, incomplete collection, and low weighing accuracy for the water ejected from the fuel injection ring. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art and provide a test bench for measuring the flow rate at the nozzle of a fuel injection ring, which includes a base frame, a water flow test bench collection device, and a water flow test bench tooling. The water flow test bench tooling is arranged inside the base frame, and the water flow test bench collection device is arranged on the side of the base frame.

[0004] Further, the base frame is a cuboid frame structure. A guide rail is fixedly connected inside the base frame. Above the guide rail, there is a tooling base that can move along the guide rail. On the upper surface of the tooling base, two tooling columns are fixedly installed. The tops of the two tooling columns are fixedly connected to a tooling top plate. On the upper surface of the tooling base, a tooling distance adjustment device is fixedly installed, and the tooling distance adjustment device is located between the two tooling columns.

[0005] Further, the tooling distance adjustment device is a hydraulic cylinder or a pneumatic cylinder.

[0006] Further, a drainage trough is arranged inside the base frame, and the drainage trough is located below the guide rail.

[0007] Further, two base water intake connection conduit mounting plates are symmetrically arranged with respect to the axis of the base frame. Both ends of each base water intake connection conduit mounting plate are fixedly connected through two adjacent columns of the base frame. A number of base water intake connection conduits are arranged on each base water intake connection conduit mounting plate.

[0008] Further, a water intake trough is fixedly connected to the outside of each base water intake connection conduit mounting plate. A number of water intake trough connection conduits and funnels are arranged inside the water intake trough. The number of base water intake connection conduits, water intake trough connection conduits, and funnels is the same. The base water intake connection conduits and the water intake trough connection conduits are connected through hoses, and the funnels are located directly below the water intake trough connection conduits.

[0009] Further, a water return trough is arranged inside the base frame, and the water return trough is located below the drainage trough.

[0010] Furthermore, the water flow test bench collection device includes a collection device base, a weighing mechanism mounting seat, a weighing mechanism, and a drainage device; the weighing mechanism mounting seat is fixedly installed on the collection device base, the weighing mechanism is arranged on the weighing mechanism mounting seat, and the drainage device is fixedly connected to the collection device base and communicated with the weighing mechanism.

[0011] Furthermore, the water flow test bench tooling includes an oil injection ring fixing device, an inner nozzle collection assembly, an outer nozzle collection assembly, and a tooling fixing plate; the oil injection ring fixing device is fixedly connected to the oil injection ring, the inner nozzle collection assembly is communicated with the inner nozzle of the inner ring of the oil injection ring, the outer nozzle collection assembly is communicated with the outer nozzle of the oil injection ring, and the inner nozzle collection assembly and the outer nozzle collection assembly are fixedly connected to the tooling fixing plate.

[0012] The usage method of the above test bench includes the following steps:

[0013] S100. Install the test piece oil injection ring

[0014] Use the clamp of the oil injection ring fixing device in the water flow test bench tooling to fix the test piece oil injection ring;

[0015] S200. Connect the injection port and inject

[0016] S210. Connect one end of the hose to the injector of the test piece oil injection ring and the other end to the water tank. A pressure pump is provided in the water tank or in the middle section of the hose, and the pressure of the pressure pump is adjustable;

[0017] S220. Start the pressure pump, and after the water sprays out from the inner nozzle and the outer nozzle of the test piece oil injection ring, stop the pressure pump;

[0018] S300. Install the tooling

[0019] S310. Coarse adjustment

[0020] Start the tooling distance adjustment device to make the inner nozzle collection assembly and the outer nozzle collection assembly on the tooling fixing plate in the water flow test bench tooling reach the predetermined positions;

[0021] S320. Fine adjustment

[0022] S321. Start the longitudinal movement mechanism of the outer nozzle in the water flow test bench tooling to move the outer nozzle to the predetermined position, and make the nozzle connection port of the outer nozzle in the water flow test bench tooling communicate and fix with the outer nozzle of the oil injection ring;

[0023] S322. Start the longitudinal movement mechanism of the inner nozzle in the water flow test bench tooling to move the inner nozzle to the predetermined position, and adjust the hinge point between the inner nozzle and the hinge connecting seat in the water flow test bench tooling to make the nozzle connection port of the inner nozzle in the water flow test bench tooling communicate and fix with the inner nozzle of the inner ring of the oil injection ring;

[0024] S400. Measure the flow rate of the injection orifice of the injection ring

[0025] S410. Adjust the pressure pump to a predetermined pressure, start the pressure pump and start timing simultaneously. The water in the water tank enters the injection ring through the injector, is ejected from the inner injection orifice and the outer injection orifice of the injection ring, and then enters the inner connecting nozzle and the outer injection orifice nozzle in the water flow test bench tooling, and then passes through the base water guiding connecting conduit, the water tank connecting conduit, the funnel and the liquid collection tank in the water flow test bench collection device in sequence. The weighing sensor in the water flow test bench collection device weighs the water in the liquid collection tank;

[0026] S420. Stop the pressure pump and timing, remove the hose connected to the injector, connect one end of a dry hose to the injector and the other end to the pressure pump, adjust the pressure pump to a predetermined pressure, start the pressure pump and start timing simultaneously. The high-pressure gas ejects the remaining water in the injection ring from the inner injection orifice and the outer injection orifice of the injection ring, and then enters the inner connecting nozzle and the outer injection orifice nozzle, and then passes through the base water guiding connecting conduit, the water tank connecting conduit, the funnel and the liquid collection tank in sequence. The weighing sensor weighs the water in the liquid collection tank; until the hose leading to the water accumulation tank stops discharging water, close the pressure pump and stop timing simultaneously;

[0027] S430. In step S420, the weight finally weighed by the weighing sensor / (the time of step S410 + the time of step S420) is the flow rate of the inner injection orifice and the outer injection orifice of the injection ring.

[0028] The advantages of the present invention compared with the prior art are as follows:

[0029] 1. The test bench of the present invention is used to measure the flow rate of the injection orifice of the injection ring. The overall design is reasonable, effectively realizing the collection of the flow rate of the injection orifice of the injection ring, with high collection efficiency, complete collection and high weighing accuracy.

[0030] 2. For the test bench of the present invention, its water flow test bench collection device introduces the water in the water collection tank of the water flow test bench into the liquid collection tank through a hose, realizing complete collection with high collection efficiency of the water ejected from the injection ring. At the same time, the weighing sensor weighs the water in the liquid collection tank, improving the weighing quality, and the overall structure is reasonably arranged.

[0031] 3. The test bench of the present invention, the flow test bench tooling, for the test piece fuel injection ring, by setting an inner nozzle orifice collection component and an outer nozzle orifice collection component, connecting the inner nozzle orifice connection port to the inner nozzle orifice of the inner ring of the fuel injection ring, and connecting the outer nozzle orifice nozzle orifice connection port and the outer nozzle orifice drain port, realizes the collection of liquid water at the inner and outer nozzle orifices of the fuel injection ring, with complete collection and high collection efficiency. At the same time, the inner nozzle orifice collection component and the outer nozzle orifice collection component are modularly designed, with a simple structure. In addition, for the inner nozzle orifice collection component, through hinged setting, after the outer nozzle orifice collection component is connected and fixed to the outer nozzle orifice of the fuel injection ring, through hinged adjustment, the inner nozzle orifice collection component is connected to the inner nozzle orifice of the inner ring of the fuel injection ring, applicable to a variety of fuel injection ring test pieces, with a wide range of applications. Finally, by setting an inner nozzle longitudinal movement mechanism and an outer nozzle orifice longitudinal movement mechanism, the heights of the inner nozzle orifice collection component and the outer nozzle orifice collection component are adjustable, and in cooperation with the fuel injection ring fixing device, it is applicable to a variety of fuel injection ring test pieces, further expanding the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a three-dimensional perspective view of the test bench of the present invention.

[0033] Figure 2 is Figure 1 an enlarged view of part A in

[0034] Figure 3 is Figure 1 an enlarged view of part B in

[0035] Figure 4 is a three-dimensional perspective view of the water flow test bench collection device in the test bench of the present invention from the first perspective.

[0036] Figure 5 is a three-dimensional perspective view of the water flow test bench collection device in the test bench of the present invention from the second perspective.

[0037] Figure 6 is Figure 5 an enlarged view of part C in

[0038] Figure 7 is a three-dimensional structural schematic diagram of the water flow test bench tooling in the test bench of the present invention.

[0039] Figure 8 is a three-dimensional structural schematic diagram of the inner nozzle orifice collection component of the water flow test bench tooling in the test bench of the present invention from one perspective.

[0040] Figure 9 is a three-dimensional structural schematic diagram of the inner nozzle orifice collection component of the water flow test bench tooling in the test bench of the present invention from another perspective.

[0041] Figure 10In the test bench of the present invention, it is a three-dimensional structural schematic diagram of the internal nozzle of the water flow test bench tooling.

[0042] Figure 11 In the test bench of the present invention, it is a three-dimensional structural schematic diagram of the external nozzle collection assembly of the water flow test bench tooling.

[0043] Figure 12 In the test bench of the present invention, it is a three-dimensional structural schematic diagram of the external nozzle of the water flow test bench tooling.

[0044] Figure 13 In the test bench of the present invention, it is a structural schematic diagram of an injector. Detailed implementation manners

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "plurality" is two or more.

[0046] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "abutment" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0047] As Figures 1-3 shown, a test bench for measuring the flow rate of the injection ring nozzle includes a base frame 100, a water flow test bench collection device 200, and a water flow test bench tooling 300. The water flow test bench tooling 300 is disposed inside the base frame 100, and the water flow test bench collection device 200 is disposed on the side of the base frame 100.

[0048] The base frame 100 is a cuboid frame structure. A guide rail 110 is fixedly connected inside the base frame 100. Above the guide rail 110, there is a tooling base 120 which can move along the guide rail 110. On the upper surface of the tooling base 120, two tooling columns 130 are fixedly installed. At the top of the two tooling columns 130, a tooling top plate 140 is fixedly connected. On the upper surface of the tooling base 120, a tooling distance adjustment device 150 is fixedly installed, and the tooling distance adjustment device 150 is located between the two tooling columns 130. A drain trough 160 is arranged inside the base frame 100, and the drain trough 160 is located below the guide rail 110.

[0049] The two base water diversion connection conduit mounting plates 170 are symmetrically arranged with respect to the axis of the base frame 100. Both ends of each base water diversion connection conduit mounting plate 170 are fixedly connected through two adjacent columns of the base frame 100. A number of base water diversion connection conduits 171 are arranged on each base water diversion connection conduit mounting plate 170.

[0050] On the outside of each base water diversion connection conduit mounting plate 170, a water diversion trough 180 is fixedly connected. A number of water diversion trough connection conduits 181 and funnels 182 are arranged inside the water diversion trough 180. The number of the base water diversion connection conduits 171, the water diversion trough connection conduits 181 and the funnels 182 is the same. The base water diversion connection conduit 171 and the corresponding water diversion trough connection conduit 181 are connected through a hose, and the funnel 182 is located directly below the corresponding water diversion trough connection conduit 181. A water return trough 190 is arranged inside the base frame 100, and the water return trough 190 is located below the drain trough 160.

[0051] There are two sets of water flow test bench collection devices, and their structures are the same. They are symmetrically arranged on the side of the bottom of the base frame 100.

[0052] As Figures 4-6 shown, the water flow test bench collection device includes a collection device base 210, a weighing mechanism mounting seat 220, a weighing mechanism 230 and a drainage device 240. The weighing mechanism mounting seat 220 is fixedly installed on the collection device base 210. The weighing mechanism 230 is arranged on the weighing mechanism mounting seat 220. The drainage device 240 is fixedly connected to the collection device base 210 and is communicated with the weighing mechanism 230.

[0053] The base 210 of the collection device includes a first vertical column 211, a second vertical column 212, a third vertical column 213, a fourth vertical column 214, a first cross beam 215, a second cross beam 216 and a longitudinal beam 217. The first vertical column 211 and the second vertical column 212 are vertically arranged, the first cross beam 215 is horizontally arranged, and both ends of the first cross beam 215 are fixedly connected to the first vertical column 211 and the second vertical column 212 respectively. The third vertical column 213 and the fourth vertical column 214 are vertically arranged, the second cross beam 216 is horizontally arranged, and both ends of the second cross beam 216 are fixedly connected to the third vertical column 213 and the fourth vertical column 214 respectively. The longitudinal beam 217 is horizontally arranged, and both ends of the longitudinal beam 217 are fixedly connected to the first cross beam 215 and the second cross beam 216 respectively.

[0054] The mounting base 220 of the weighing mechanism includes a first vertical column 221 of the weighing mechanism, a second vertical column 222 of the weighing mechanism and a horizontal mounting plate 223 of the weighing mechanism. The first vertical column 221 of the weighing mechanism and the second vertical column 222 of the weighing mechanism are vertically arranged. One ends of the first vertical column 221 of the weighing mechanism and the second vertical column 222 of the weighing mechanism are fixedly connected to the first cross beam 215 and the second cross beam 216 respectively, and the other ends are both fixedly connected to the bottom of the horizontal mounting plate 223 of the weighing mechanism.

[0055] The weighing mechanism 230 includes a first weighing mechanism 230-1 and a second weighing mechanism 230-2. Along the axial direction of the horizontal mounting plate 223 of the weighing mechanism, the first weighing mechanism 230-1 and the second weighing mechanism 230-2 are symmetrically arranged relative to the axis of the horizontal mounting plate 223 of the weighing mechanism on the horizontal mounting plate 223 of the weighing mechanism.

[0056] The first weighing mechanism 230-1 and the second weighing mechanism 230-2 have the same structure.

[0057] The first weighing mechanism 230-1 includes a mounting base 231 of the weighing mechanism, a weighing sensor 232, a mounting base 233 of the water collection tank and a water accumulation tank 234. The weighing sensor 232, the mounting base 233 of the water collection tank and the water accumulation tank 234 are multiple, and the numbers of the weighing sensor 232, the mounting base 233 of the water collection tank and the water accumulation tank 234 are the same as the number of the funnel 182. And the water accumulation tank 234 is communicated with the funnel 182 through a hose.

[0058] The bottom of the mounting base 231 of the weighing mechanism is fixedly connected to the top of the horizontal mounting plate 223 of the weighing mechanism. One end of each weighing sensor 232 is connected to the top surface of the mounting base 231 of the weighing mechanism, and the other end is connected to the corresponding mounting base 233 of the water collection tank. Each mounting base 233 of the water collection tank is connected with a water accumulation tank 234.

[0059] The drainage device 240 includes a first drainage device 240-1 and a second drainage device 240-2. Along the axial direction of the longitudinal beam 217, the first drainage device 240-1 and the second drainage device 240-2 are symmetrically arranged with respect to the axis of the longitudinal beam 217.

[0060] The first drainage device 240-1 and the second drainage device 240-2 have the same structure.

[0061] The first drainage device 240-1 includes a drainage valve mounting seat 241, a drainage valve 242, a liquid collection tank connecting pipe 243, and a drainage valve drain pipe 244. The bottom of the drainage valve mounting seat 241 is fixedly connected to the tops of the first upright 211 and the third upright 213 respectively. There are multiple drainage valves 242, liquid collection tank connecting pipes 243, and drainage valve drain pipes 244, and the quantities are the same as those of the weighing sensors 232, the water collection tank mounting seats 233, and the water accumulation tanks 234. Each drainage valve 242 is fixedly installed on the drainage valve mounting seat 241. The inlet of each drainage valve 242 is communicated with the bottom of the corresponding water accumulation tank 234 through the liquid collection tank connecting pipe 243, and the outlet is communicated with the drainage valve drain pipe.

[0062] As Figures 7-13 shown, the water flow test bench tooling is used to receive the liquid water ejected from the spray nozzles of the fuel injection ring 1. The fuel injection ring 1 is provided with a number of fuel injectors 2. The inner ring of the fuel injection ring 1 is provided with inner spray nozzles, and the outer ring is provided with outer spray nozzles. The water flow test bench tooling includes a fuel injection ring fixing device 310, an inner spray nozzle collection assembly 320, an outer spray nozzle collection assembly 330, and a tooling fixing plate 340. The fuel injection ring fixing device 310 is fixedly connected to the fuel injection ring 1. The inner spray nozzle collection assembly 320 is communicated with the inner spray nozzles on the inner ring of the fuel injection ring 1. The outer spray nozzle collection assembly 330 is communicated with the outer spray nozzles of the fuel injection ring 1. The inner spray nozzle collection assembly 320 and the outer spray nozzle collection assembly 330 are fixedly connected to the tooling fixing plate 340. The bottom of the tooling fixing plate 340 is fixedly connected to the tooling distance adjusting device 150.

[0063] The fuel injection ring fixing device 310 includes a fuel injection ring fixing nut 311, a fuel injection ring fixing device connecting frame 312, and a fuel injection ring fixing device clamp 313. There are multiple fuel injection ring fixing device connecting frames 312, and the multiple fuel injection ring fixing device connecting frames 312 are fixedly connected to the fuel injection ring fixing nut 311. Each fuel injection ring fixing device connecting frame 312 is provided with a fuel injection ring fixing device clamp 313. Each fuel injection ring fixing device clamp 313 is detachably connected to the fuel injection ring 1. The fuel injection ring fixing nut 311 is fixedly connected to the bottom of the tooling top plate 140.

[0064] The inner nozzle collection assembly 320 includes an inner connecting nozzle 321, a hinged connection seat 325, an inner connecting nozzle connection block 327, and an inner connecting nozzle longitudinal movement mechanism 328. The inner connecting nozzle 321 and the hinged connection seat 325 are multiple and have the same quantity. One end of each inner connecting nozzle 321 is provided with an inner connecting nozzle spout connection port 322, and the other end is provided with an inner connecting nozzle drain port 323. The inner connecting nozzle spout connection port 322 and the inner connecting nozzle drain port 323 are in communication. The inner connecting nozzle drain port 323 is connected to the base water diversion connecting conduit 171 through a hose. The inner connecting nozzle spout connection port 322 is in communication with the inner spout of the inner ring of the fuel injection ring 1. An inner connecting nozzle hinge hole 324 is provided on the body of each inner connecting nozzle 321. An inner nozzle collection assembly hinge bolt 326 passes through the inner connecting nozzle hinge hole 324 to hinge the inner connecting nozzle 321 and the corresponding hinged connection seat 325. Each hinged connection seat 325 passes through the inner connecting nozzle connection block 327 and is fixedly connected to the inner connecting nozzle connection block 327. The bottom of the inner connecting nozzle connection block 327 is fixedly connected to the inner connecting nozzle longitudinal movement mechanism 328. The inner connecting nozzle longitudinal movement mechanism 328 passes through the tooling fixing plate 340 and is fixedly connected to the tooling fixing plate 340.

[0065] Preferably, both the inner connecting nozzle 321 and the hinged connection seat 325 are five in number.

[0066] Preferably, the cross-section of the inner connecting nozzle spout connection port 322 is rectangular, and the cross-section of the inner connecting nozzle drain port 323 is circular.

[0067] The external nozzle collection assembly 330 includes an external nozzle 331, a first external nozzle connection block 334, a second external nozzle connection block 335, an external nozzle fixed mounting base 336, and an external nozzle longitudinal movement mechanism 337. There are multiple external nozzles 331. One end of each external nozzle 331 is provided with an external nozzle port connection port 332, and the other end is provided with an external nozzle drain port 333. The external nozzle port connection port 332 and the external nozzle drain port 333 are communicated. The external nozzle drain port 333 is communicated with the base water diversion connection conduit 171. The external nozzle port connection port 332 is communicated with the external nozzle of the oil injection ring 1. The multiple external nozzles 331 are divided into two groups. One group of external nozzles 331 is fixedly connected to the first external nozzle connection block 334, and the other group of external nozzles 331 is fixedly connected to the second external nozzle connection block 335. The bottoms of the first external nozzle connection block 334 and the second external nozzle connection block 335 are fixedly connected to the external nozzle fixed mounting base 336. The bottom of the external nozzle fixed mounting base 336 is fixedly connected to the external nozzle longitudinal movement mechanism 337. The external nozzle longitudinal movement mechanism 337 passes through the tooling fixing plate 340 and is fixedly connected to the tooling fixing plate 340.

[0068] Preferably, there are 4 external nozzles 331 in each group.

[0069] Preferably, the cross-section of the external nozzle port connection port 332 is rectangular, and the cross-section of the external nozzle drain port 333 is circular.

[0070] Preferably, the tooling distance adjustment device 150 is a hydraulic cylinder or a pneumatic cylinder.

[0071] Preferably, the drain valve 242 is an electromagnetic valve.

[0072] Preferably, the internal nozzle longitudinal movement mechanism 328 is a pneumatic cylinder or a hydraulic cylinder.

[0073] Preferably, the external nozzle longitudinal movement mechanism 337 is a pneumatic cylinder or a hydraulic cylinder.

[0074] The usage method of the above test bench for measuring the flow rate of the oil injection ring nozzle includes the following steps:

[0075] S100. Install the test piece oil injection ring

[0076] Use the oil injection ring fixing device clamp 313 to fix the test piece oil injection ring 1;

[0077] S200. Connect the injection port and inject

[0078] S210. Connect one end of a hose to the fuel injector 2 of the fuel injection ring 1 of the test piece, and the other end to a water tank. A pressure pump is provided inside the water tank or in the middle section of the hose, and the pressure of the pressure pump is adjustable.

[0079] S220. Start the pressure pump, and after water sprays out from the inner spray orifice and the outer spray orifice of the fuel injection ring 1 of the test piece, stop the pressure pump.

[0080] S300. Fixture installation

[0081] S310. Coarse adjustment

[0082] Start the fixture distance adjustment device 150 to move the inner spray orifice collection assembly 320 and the outer spray orifice collection assembly on the fixture fixing plate 340 to a predetermined position.

[0083] S320. Fine adjustment

[0084] S321. Start the longitudinal movement mechanism 337 of the outer spray orifice nozzle to move the outer spray orifice nozzle 331 to a predetermined position, and connect and fix the nozzle connection port 332 of the outer spray orifice nozzle to the outer spray orifice of the fuel injection ring 1.

[0085] S322. Start the longitudinal movement mechanism 328 of the inner connection nozzle to move the inner connection nozzle 321 to a predetermined position, and adjust the hinge point between the inner connection nozzle 321 and the hinge connection seat 325 to connect and fix the nozzle connection port 322 of the inner connection nozzle to the inner spray orifice of the inner ring 1 of the fuel injection ring.

[0086] S400. Measure the flow rate of the spray orifices of the fuel injection ring

[0087] S410. Adjust the pressure pump to a predetermined pressure, start the pressure pump and start timing simultaneously. The water in the water tank enters the fuel injection ring 1 through the fuel injector 2, sprays out from the inner spray orifice and the outer spray orifice of the fuel injection ring 1, then enters the inner connection nozzle 321 and the outer spray orifice nozzle 331, and then passes through the base water diversion connection conduit 171, the water trough connection conduit 181, the funnel 182 and the liquid collection tank 234 in sequence. The weighing sensor 232 weighs the water in the liquid collection tank 234.

[0088] S420. Stop the pressure pump and stop timing. Disconnect the hose connected to the fuel injector 2, connect one end of a dry hose to the fuel injector 2, and connect the other end to the pressure pump. Adjust the pressure pump to a predetermined pressure, start the pressure pump and start timing simultaneously. The high-pressure gas sprays out the remaining water in the fuel injection ring 1 from the inner spray orifice and the outer spray orifice of the fuel injection ring 1, then enters the inner connection nozzle 321 and the outer spray orifice nozzle 331, and then passes through the base water diversion connection conduit 171, the water trough connection conduit 181, the funnel 182 and the liquid collection tank 234 in sequence. The weighing sensor 232 weighs the water in the liquid collection tank 234; until the hose introducing water into the water accumulation tank 234 stops discharging water, close the pressure pump and stop timing simultaneously.

[0089] In S430, for each weighing sensor 232, the weight finally weighed / (the time of step S410 + the time of step S420) is the flow rate of each inner injection port and outer injection port of the injection ring 1.

[0090] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0091] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A method for using a test bench, characterized in that, The test bench, which is used to measure the flow rate of the injection nozzle of the injection ring, includes a base frame, a water flow test bench collection device, and a water flow test bench tooling. The water flow test bench tooling is arranged inside the base frame, and the water flow test bench collection device is arranged on the side of the base frame; The method includes the following steps: S100. Install the test piece injection ring Use the clamp of the injection ring fixing device in the water flow test bench tooling to fix the test piece injection ring; S200. Connect the injection port and inject S210. Connect one end of the hose to the injector of the test piece injection ring and the other end to the water tank. A pressure pump is arranged inside the water tank or in the middle section of the hose, and the pressure of the pressure pump is adjustable; S220. Start the pressure pump, stop the pressure pump after the water sprays out from the inner injection nozzle and the outer injection nozzle of the test piece injection ring; S300. Tooling installation S310. Coarse adjustment Start the tooling distance adjustment device to make the inner injection nozzle collection component and the outer injection nozzle collection component on the tooling fixing plate in the water flow test bench tooling reach the predetermined position; S320. Fine adjustment S321. Start the longitudinal movement mechanism of the outer injection nozzle in the water flow test bench tooling to move the outer injection nozzle to the predetermined position, and connect and fix the injection nozzle connection port of the outer injection nozzle in the water flow test bench tooling with the outer injection nozzle of the injection ring; S322. Start the longitudinal movement mechanism of the inner connection nozzle in the water flow test bench tooling to move the inner connection nozzle to the predetermined position, and adjust the hinge point between the inner connection nozzle and the hinge connection seat in the water flow test bench tooling to connect and fix the injection nozzle connection port of the inner connection nozzle in the water flow test bench tooling with the inner injection nozzle of the inner ring of the injection ring; S400. Measure the flow rate of the injection nozzle of the injection ring S410. Adjust the pressure pump to the predetermined pressure, start the pressure pump and start timing at the same time. The water in the water tank enters the injection ring through the injector, sprays out from the inner injection nozzle and the outer injection nozzle of the injection ring, and then enters the inner connection nozzle and the outer injection nozzle in the water flow test bench tooling, and then passes through the base water connection conduit, the water tank connection conduit, the funnel and the liquid collection tank in the water flow test bench collection device in sequence. The weighing sensor in the water flow test bench collection device weighs the water in the liquid collection tank; S420. Stop the pressure pump and timing, remove the hose connected to the injector, connect one end of a dry hose to the injector and the other end to the pressure pump, adjust the pressure pump to the predetermined pressure, start the pressure pump and start timing at the same time. The high-pressure gas sprays out the remaining water in the injection ring from the inner injection nozzle and the outer injection nozzle of the injection ring, and then enters the inner connection nozzle and the outer injection nozzle and then passes through the base water connection conduit, the water tank connection conduit, the funnel and the liquid collection tank in sequence. The weighing sensor weighs the water in the liquid collection tank; until the hose introducing the accumulated water tank stops discharging water, close the pressure pump and stop timing at the same time; S430. In step S420, the weight finally weighed by each weighing sensor / (the time of step S410 + the time of step S420) is the flow rate of each inner injection nozzle and outer injection nozzle of the injection ring.

2. The method according to claim 1, characterized in that: The base frame is a rectangular frame structure. A guide rail is fixedly connected inside the base frame. Above the guide rail, there is a tooling base which can move along the guide rail. On the upper surface of the tooling base, two tooling columns are fixedly installed. At the top of the two tooling columns, a tooling top plate is fixedly connected. On the upper surface of the tooling base, a tooling distance adjustment device is fixedly installed, and the tooling distance adjustment device is located between the two tooling columns.

3. The method according to claim 2, characterized in that: The tooling distance adjustment device is a hydraulic cylinder or a pneumatic cylinder.

4. The method according to claim 2, characterized in that: A drain trough is arranged inside the base frame, and the drain trough is located below the guide rail.

5. The method according to claim 2, characterized in that: Two base water diversion connection duct mounting plates are symmetrically arranged with respect to the axis of the base frame. Both ends of each base water diversion connection duct mounting plate are fixedly connected through two adjacent columns of the base frame. A number of base water diversion connection ducts are arranged on each base water diversion connection duct mounting plate.

6. The method according to claim 5, characterized in that: On the outside of each base water diversion connection duct mounting plate, a water diversion trough is fixedly connected. A number of water diversion trough connection ducts and funnels are arranged inside the water diversion trough. The number of the base water diversion connection ducts, the water diversion trough connection ducts and the funnels is the same. The base water diversion connection ducts and the water diversion trough connection ducts are connected through hoses, and the funnels are located directly below the water diversion trough connection ducts.

7. The method according to claim 2, characterized in that: A water return trough is arranged inside the base frame, and the water return trough is located below the drain trough.

8. The method according to claim 1, characterized in that: The water flow test bench collection device includes a collection device base, a weighing mechanism mounting seat, a weighing mechanism and a drainage device; The weighing mechanism mounting seat is fixedly installed on the collection device base. The weighing mechanism is arranged on the weighing mechanism mounting seat. The drainage device is fixedly connected to the collection device base and is communicated with the weighing mechanism.

9. The method according to claim 1, characterized in that: The water flow test bench tooling includes an oil injection ring fixing device, an inner nozzle collection assembly, an outer nozzle collection assembly, and a tooling fixing disk; the oil injection ring fixing device is fixedly connected to the oil injection ring. The inner nozzle collection assembly is communicated with the inner nozzle of the inner ring of the oil injection ring. The outer nozzle collection assembly is communicated with the outer nozzle of the oil injection ring. The inner nozzle collection assembly and the outer nozzle collection assembly are fixedly connected to the tooling fixing disk.

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