Hydrostatic test tool for integrated structure of engine shell and spray pipe

Abstract

The utility model relates to a hydraulic pressure test tool for an integrated structure of an engine shell and a spray pipe. An engine comprises an engine front end socket, an engine shell, a shell, a plurality of saddles, a front end socket hydraulic pressure tool and a spray pipe hydraulic pressure tool. The multiple saddle seats are located on the bottom end face of the shell and support the engine shell. The front end socket water pressure tool is located on the end face of one side of the inner wall of the shell, the front end socket water pressure tool is close to a front end socket of the shell of the engine, and the front end socket water pressure tool seals the front end socket of the engine; and the spray pipe water pressure tool is positioned on the opposite end surface of the front end socket water pressure tool. The shell provided by the utility model can be used for a hydrostatic test of an integrated structure of an engine shell and a spray pipe. Compared with a conventional water pressure tool which cannot meet the test requirement of the structure, the device can meet the low-pressure test of the spray pipe, and cannot cause the damage of the spray pipe due to the high pressure generated at the spray pipe during the high-pressure test of the engine shell.

Description

Technical Field

[0001] The utility model belongs to the field of aerospace technology, and particularly relates to a hydrostatic test tooling for an integrated structure of an engine housing and a nozzle. Background Art

[0002] After the engine housing and the nozzle are manufactured, hydrostatic tests are required, and the test pressures are different. For a split structure, the two can be respectively sealed and installed and tested using their respective hydrostatic toolings; however, in an integrated structure, the two are connected, and it is impossible to test according to the conventional hydrostatic test method. A special hydrostatic test tooling needs to be designed to meet both the low-pressure test of the nozzle and prevent the generation of high pressure at the nozzle during the high-pressure test of the engine housing, which may cause damage to the nozzle.

[0003] The information disclosed in this background art section is only intended to enhance the overall understanding of the utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a hydrostatic test tooling for an integrated structure of an engine housing and a nozzle, which can meet the hydrostatic test requirements of the integrated structure of the engine housing and the nozzle, has low cost, is easy to manufacture, and has higher sealing reliability.

[0005] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:

[0006] A hydrostatic test tooling for an integrated structure of an engine housing and a nozzle, the engine includes an engine front head and an engine housing, and the tooling includes a housing, a plurality of saddle seats, a front head hydrostatic tooling, and a nozzle hydrostatic tooling. The plurality of saddle seats are located on the bottom end face of the housing, and the saddle seats support the engine housing; the front head hydrostatic tooling is located on one end face of the inner wall of the housing, the front head hydrostatic tooling is close to the front head of the engine housing, and the front head hydrostatic tooling seals the engine front head; the nozzle hydrostatic tooling is located on the opposite end face to the front head hydrostatic tooling, and the nozzle hydrostatic tooling is used to seal the front and rear ends of the nozzle.

[0007] In one or more embodiments of the utility model, the front head hydrostatic tooling includes an exhaust device, a plug, a water injection device, a first pressure measuring device, a handle, a first lifting lug, and a first O-ring. The plug is threadedly connected to the engine housing front head through bolts. A handle and a first lifting lug are welded on one end face of the plug, and the first pressure measuring device is connected to one end face of the plug.

[0008] In one or more embodiments of the present utility model, the nozzle hydraulic pressure tooling includes a rear end cover, an exhaust device, a second pressure measuring device, a second lifting lug, a water injection device, a disassembly and assembly boss, a transition collar, a sealing movable block, a first double nut, a second double nut and a clamp. The second pressure measuring device is connected to one end face of the rear end cover. The second lifting lug and the disassembly and assembly boss are welded to one end face of the rear end cover. The rear end cover is connected to the rear end face of the shell nozzle. A is welded to the central end face of the rear end cover. The is connected to the transition collar and the sealing movable block, and is axially locked by the first double nut and the second double nut, and radially locked by the clamp.

[0009] In one or more embodiments of the present utility model, the exhaust device includes a first high-pressure ball valve, an exhaust pipe and an exhaust joint. The exhaust pipe is connected to the exhaust pipe. One end face of the exhaust joint is fixedly connected to the inner wall end face of the shell. A first through hole is opened on the plug. The exhaust pipe penetrates through the first through hole. The first high-pressure ball valve penetrates through the first through hole and is connected to the first high-pressure ball valve on the outer end face of the plug. The water injection device includes a second high-pressure ball valve and a water injection pipe. A second through hole is opened on the plug. The second high-pressure ball valve penetrates through the outer end face of the plug and is connected to the second high-pressure ball valve.

[0010] In one or more embodiments of the present utility model, both the first pressure measuring device and the second pressure measuring device are three-way interfaces.

[0011] In one or more embodiments of the present utility model, a first O-ring is fixedly connected between the shell and the plug.

[0012] In one or more embodiments of the present utility model, a fifth O-ring and a sixth O-ring are connected between the rear end cover and the shell.

[0013] In one or more embodiments of the present utility model, the saddle includes a frame and a rubber pad. A U-shaped groove is opened on the top end face of the frame, and a rubber pad is fixedly connected to the U-shaped groove.

[0014] In one or more embodiments of the present utility model, the sealing movable block is of a multi-piece fan-shaped structure.

[0015] In one or more embodiments of the present utility model, a sealing gasket is connected to the sealing movable block. A sealing gasket is connected between the sealing movable block and the transition collar. A second O-ring, a third O-ring and a fourth O-ring are connected between the transition collar and the front end of the shell nozzle.

[0016] Compared with the prior art, the hydraulic pressure test tooling for the integrated structure of the engine shell and the nozzle of the present utility model has the following advantages;

[0017] 1) The housing can be used for the hydrostatic test of the integrated structure of the engine housing and the nozzle. Compared with the conventional hydrostatic tooling that cannot meet the test requirements of such structures, this application can not only meet the low-pressure test of the nozzle but also prevent high pressure from being generated at the nozzle during the high-pressure test of the engine housing, thus avoiding damage to the nozzle.

[0018] 2) The saddle is made of conventional steel, rubber and other materials, with low cost and easy to manufacture.

[0019] 3) The front head hydrostatic tooling has higher sealing reliability. This application uses a redundant design method, and multiple sealing measures ensure the sealing performance at the same time. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of the hydrostatic test tooling for the integrated structure of the engine housing and the nozzle in an embodiment of the present invention;

[0022] Figure 2 It is an axonometric view of the saddle;

[0023] Figure 3 It is a cross-sectional view of the hydrostatic test tooling for the integrated structure of the engine housing and the nozzle in an embodiment of the present invention;

[0024] Figure 4 It is a cross-sectional view of the front head hydrostatic tooling of the present invention;

[0025] Figure 5 It is an axonometric view of the front head hydrostatic tooling of the present invention;

[0026] Figure 6 It is an axonometric view of the nozzle hydrostatic tooling of the present invention;

[0027] Figure 7 It is a cross-sectional view of the nozzle hydrostatic tooling of the present invention;

[0028] Figure 8 It is a partial exploded view of the nozzle hydrostatic tooling of the present invention.

[0029] Main reference numerals description:

[0030] 1 - housing, 2 - saddle, 201 - frame, 202 - rubber pad, 3 - front head hydraulic pressure tooling, 301 - first high-pressure ball valve, 302 - exhaust pipe, 303 - exhaust joint, 304 - second high-pressure ball valve, 305 - water injection pipe, 306 - first pressure measuring device, 307 - plug, 308 - handle, 309 - first lifting lug, 310 - first O-ring, 4 - nozzle hydraulic pressure tooling, 401 - rear plug, 402 - exhaust device, 403 - second pressure measuring device, 404 - second lifting lug, 405 - water injection device, 406 - disassembly and assembly boss, 407 - adapter collar, 408 - sealing block, 409 - first double nut, 410 - second double nut, 411 - clamp, 412 - gasket, 413 - first O-ring, 414 - second O-ring, 415 - third O-ring, 416 - fourth O-ring, 417 - fifth O-ring, 418 - sixth O-ring, 5 - threaded center connecting rod. Detailed implementation manners

[0031] In order to enable those skilled in the art to better understand the technical solutions in the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0032] As Figure 1 - Figure 2 shown, a hydraulic pressure test tooling for an integrated structure of an engine housing and a nozzle in an embodiment of the present utility model includes a housing 1, a plurality of saddles 2, a front head hydraulic pressure tooling 3, and a nozzle hydraulic pressure tooling 4, which can not only meet the low-pressure test of the nozzle, but also prevent high pressure from being generated at the nozzle during the high-pressure test of the engine housing, resulting in damage to the nozzle.

[0033] A plurality of saddles 2 are located on the bottom end face of the housing 1. The saddles 2 support the engine housing. The saddle 2 includes a frame 201 and a rubber pad 202. A U-shaped groove is formed on the top end face of the frame 201, and the rubber pad 202 is fixedly connected to the U-shaped groove. Among them, the saddle 2 is set according to the length of the housing 1, and there are at least 2 saddles.

[0034] Furthermore, the frame 201 is welded and formed by an external steel plate, an internal steel pipe, and a forklift groove. The function of the rubber pad 202 is to prevent the engine housing from being scratched and bumped.

[0035] As Figure 4 - Figure 8As shown, the front head hydrostatic pressure tooling 3 is located on one end face of the inner wall of the housing 1. The front head hydrostatic pressure tooling 3 is close to the front head of the engine housing, and the front head hydrostatic pressure tooling 3 seals the engine front head.

[0036] The front head hydrostatic pressure tooling 3 includes an exhaust device 402, a plug cover 307, a water injection device 405, a first pressure measuring device 306, a handle 308, a first lifting lug 309, and a first O-ring 310. The plug cover 307 is connected to the front head of the engine housing by bolts in a threaded manner. The handle 308 and the first lifting lug 309 are welded to the side of the plug cover 307. The plug cover 307 is connected to the front head of the housing 1 by bolts and washers. The first pressure measuring device 306 is connected to one end face of the plug cover 307.

[0037] Furthermore, the exhaust device 402 is used to discharge the air inside the engine housing during water injection. The water injection device 405 is used for high-pressure and rapid water injection. The first pressure measuring device 306 is connected to pressure measuring equipment such as a mechanical pressure gauge and a digital display pressure gauge. The first lifting lug 309 is used for lifting the plug cover 307 by a crane to reduce manual labor.

[0038] A first O-ring 310 is fixedly connected between the housing 1 and the plug cover 307. The material of the first O-ring 310 is rubber materials such as nitrile rubber, ethylene propylene diene monomer rubber, silicone rubber, or fluororubber.

[0039] As Figure 5 - Figure 8 shown, the exhaust device 402 includes a first high-pressure ball valve 301, an exhaust pipe 302, and an exhaust joint 303. The exhaust pipe 302 is connected to the exhaust pipe 302. One end face of the exhaust joint 303 is fixedly connected to the inner wall end face of the housing 1. A first through hole is provided on the plug cover 307. The exhaust pipe 302 passes through the first through hole. The first high-pressure ball valve 301 passes through the first through hole and is located on the outer end face of the plug cover 307 to connect the first high-pressure ball valve 301. The first high-pressure ball valve 301, the exhaust pipe 302, and the exhaust joint 303 are connected by threads and sealing tape.

[0040] The water injection device 405 includes a second high-pressure ball valve 304 and a water injection pipe 305. A second through hole is provided on the plug cover 307. The second high-pressure ball valve 304 passes through the outer end face of the plug cover 307 to connect the second high-pressure ball valve 304. The second high-pressure ball valve 304 and the water injection pipe 305 are connected by threads and sealing tape.

[0041] The nozzle hydrostatic pressure tooling 4 is located at the opposite end face of the front head hydrostatic pressure tooling 3, and the nozzle hydrostatic pressure tooling 4 is used to seal the front and rear ends of the nozzle. The nozzle hydrostatic pressure tooling 4 includes a rear plug 401, an exhaust device 402, a second pressure measuring device 403, a second lifting lug 404, a water injection device 405, a disassembly and assembly boss 406, an adapter collar 407, a sealing block 408, a first double nut 409, a second double nut 410, and a clamp 411;

[0042] The second pressure measuring device 403 is connected to one side end face of the rear plug 401, and the second lifting lug 404 and the disassembly and assembly boss 406 are welded to the rear plug 401. The rear plug 401 is connected to the rear end face of the nozzle of the housing 1. Further, the rear plug 401 is sealed with the rear end of the nozzle of the housing 1 through a fifth O-ring 417 and a sixth O-ring 418.

[0043] Among them, both the first pressure measuring device 306 and the second pressure measuring device 403 are three-way interfaces and can be connected to multiple pressure measuring devices

[0044] A 5 is welded to the central end face of the rear plug 401. The 5 is connected to the adapter collar 407 and the sealing block 408, and is axially locked by the first double nut 409 and the second double nut 410, and radially locked by the clamp 411.

[0045] A fifth O-ring 417 and a sixth O-ring 418 are connected between the rear plug 401 and the housing 1.

[0046] To ensure the sealing effect between the nozzle hydrostatic pressure tooling 4 and the nozzle of the housing 1, the sealing blocks 408 are sealed with each other through a sealing gasket 412, the sealing block 408 and the adapter collar 407 are sealed through a sealing gasket 412, and the adapter collar 407 and the front end of the nozzle of the housing 1, the 5 of the rear plug 401 are sealed through a second O-ring 414, a third O-ring 415, and two fourth O-rings 416.

[0047] Further, the disassembly and assembly boss 406 on the rear plug 401 is convenient for applying rotational force and is used for tightening or loosening. The adapter collar 407, the sealing block 408 and the 5 of the rear plug 401 are assembled together through threads.

[0048] Preferably, the sealing gasket 412, the first O-ring 413, the second O-ring 414, the third O-ring 415, the fourth O-ring 416, the fifth O-ring 417, and the sixth O-ring 418 are all made of rubber materials such as nitrile rubber, ethylene propylene diene monomer rubber, silicone rubber, or fluororubber.

[0049] Among them, the clamp 411 is a finished product well-known to those skilled in the art.

[0050] The sealing movable block 408 is composed of multiple fan-shaped structures. To ensure that the tooling inside the engine housing can pass through the opening of the front head smoothly, the sealing movable block 408 is formed by splicing multiple fan-shaped structures.

[0051] The working principle of the present utility model is as follows:

[0052] 1) The saddle 2 supports the engine housing;

[0053] 2) Nozzle low-pressure water pressure test: Use the nozzle water pressure tooling 4 to seal the front and rear ends of the nozzle.

[0054] 3) Engine housing high-pressure water pressure test: Use the front head water pressure tooling 3 to seal the front head of the engine housing. The plug cover 307 is installed on the front head through fasteners such as bolts and washers to block the opening of the front head. The exhaust device 402, the first pressure measuring device 306, the first lifting lug 309 and the water injection device 405 therein are similar to the nozzle water pressure tooling 4. The handle 308 is used to assist manual disassembly, and the first O-ring 310 is used for sealing.

[0055] As Figure 1 - Figure 8 shown, its manufacturing process and preparation method are as follows:

[0056] (1) Saddle 2:

[0057] a. The frame 201 is welded and formed by an external steel plate, an internal steel pipe and a forklift slot, and the material is 45# steel;

[0058] b. The rubber pad 202 is a purchased finished 5-mm-thick silicone rubber pad;

[0059] c. Bond the rubber pad 202 to the frame 201 and nail and press it on the side;

[0060] d. Spray paint on the surface.

[0061] (2) Front head water pressure tooling 3:

[0062] a. The exhaust pipe 302 and the water injection pipe 305 are cut and blanked from Q235 steel pipes, bent and formed, and external threads are tapped at both ends;

[0063] b. Use Q235 bar stock to machine the exhaust joint 303, and prepare the finished products of the first high-pressure ball valve 301 and the second high-pressure ball valve 304;

[0064] c. Connect the first high-pressure ball valve 301, the exhaust pipe 302 and the exhaust joint 303 through threads and sealing tape to form an exhaust device; connect the second high-pressure ball valve 304 and the water injection pipe 305 through threads and sealing tape to form the water injection device 405;

[0065] d. The first pressure measuring device 306 is a three-way interface and is machined with Q235;

[0066] e. Bend the handle 308 from Q235 pipe material by forming, and machine the first lifting lug 309 from Q235 bar stock. Weld the exhaust pipe 302 in the exhaust device 402, the water injection pipe 305 in the water injection device 405, the first pressure measuring device 306, the handle 308, and the first lifting lug 309 to the plug cover 307. The plug cover is machined from Q345 material;

[0067] Among them, the first O-ring 310 and the fastener are finished products in the prior art.

[0068] ③ Nozzle hydrostatic pressure tooling 4:

[0069] a. The manufacturing methods of the exhaust device 402 and the water injection device 405 are the same as those of the exhaust device 402 and the water injection device 405 in the front head hydrostatic pressure tooling 3;

[0070] b. The second pressure measuring device 403 is a three-way interface and is machined from Q235;

[0071] c. The second lifting lug 404 is machined from Q235 bar stock, and the disassembly and assembly boss 406 is cut from Q235 sheet material;

[0072] d. Weld the exhaust pipe 302 in the exhaust device 402, the second pressure measuring device 403, the second lifting lug 404, the water injection pipe 305 in the water injection device 405, and the disassembly and assembly boss 406 to the rear plug cover 401; The overall material of the rear plug cover 401 is Q345, and the 5 on it is machined from Q345 bar stock and then welded to its central area;

[0073] e. The adapter collar 407, the sealing block 408, the first double nut 409, and the second double nut 410 are all roughly machined from 45# steel, then heat-treated, and finally finish-machined;

[0074] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed by the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0075] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hydraulic test fixture for an integrated structure of an engine casing and a nozzle, wherein the engine comprises an engine front head and an engine casing, characterized in that: Including; case; A plurality of saddle seats are located on the bottom end surface of the housing, and the saddle seats support the engine housing; A front head hydraulic tooling is located on one side end surface of the inner wall of the shell, the front head hydraulic tooling is close to the front head of the shell of the engine, and the front head hydraulic tooling seals the front head of the engine; The nozzle hydraulic tooling is located at the end face opposite to the front head hydraulic tooling, and the nozzle hydraulic tooling is used to seal the front and rear ends of the nozzle.

2. A hydraulic test fixture for an integrated structure of an engine casing and a nozzle according to claim 1, characterized in that: The front head hydraulic tooling includes an exhaust device, a plugging cover, a water injection device, a first pressure measuring device, a handle, a first lifting ear and a first O-ring. The plugging cover is threadedly connected to the front head of the engine casing by bolts. A handle and a first lifting ear are welded on one end face of the plugging cover. The first pressure measuring device is connected to one end face of the plugging cover.

3. A hydraulic test fixture for an integrated structure of an engine casing and a nozzle according to claim 2, characterized in that: The nozzle hydraulic tooling includes a rear plugging cover, an exhaust device, a second pressure measuring device, a second lifting ear, a water injection device, a disassembly and assembly boss, an adapter ring, a sealing piece, a first double nut, a second double nut and a clamp. The second pressure measuring device is connected to one side end face of the rear plugging cover, the second lifting ear and the disassembly and assembly boss are welded to one side end face of the rear plugging cover, the rear plugging cover is connected to the rear end face of the shell nozzle, the center end face of the rear plugging cover is welded with the adapter ring and the sealing piece, and is axially locked by the first double nut and the second double nut, and radially locked by the clamp.

4. A hydraulic test fixture for an integrated structure of an engine casing and a nozzle according to claim 3, characterized in that: The exhaust device includes a first high-pressure ball valve, an exhaust pipe and an exhaust joint, the exhaust pipe is connected to the exhaust pipe, one side end face of the exhaust joint is fixedly connected to the inner wall end face of the shell, the plugging cover is provided with a first through hole, the exhaust pipe passes through the first through hole, the first high-pressure ball valve passes through the first through hole and is connected to the first high-pressure ball valve on the outer end face of the plugging cover, the water injection device includes a second high-pressure ball valve and a water injection pipe, the plugging cover is provided with a second through hole, the second high-pressure ball valve passes through the outer end face of the plugging cover and is connected to the second high-pressure ball valve.

5. A hydraulic test fixture for an integrated structure of an engine casing and a nozzle according to claim 3 or 4, characterized in that: The first pressure measuring device and the second pressure measuring device are both three-way interfaces.

6. A hydraulic test fixture for an integrated structure of an engine casing and a nozzle according to claim 3 or 4, characterized in that: A first O-ring is fixedly connected between the shell and the plugging cover.

7. A hydraulic test fixture for an integrated structure of an engine casing and a nozzle according to claim 3 or 4, characterized in that: A fifth O-ring and a sixth O-ring are connected between the rear plugging cover and the housing.

8. The hydraulic test fixture for the integrated structure of engine casing and nozzle according to claim 1, characterized in that: The saddle seat comprises a frame and a rubber pad. A U-shaped groove is provided on the top end surface of the frame, and a rubber pad is fixedly connected to the U-shaped groove.

9. The hydraulic test fixture for the integrated structure of engine casing and nozzle according to claim 4, characterized in that: The sealing movable piece is a multi-piece fan-shaped structure.

10. A hydraulic test fixture for an integrated structure of an engine casing and a nozzle according to claim 9, characterized in that: A sealing gasket is connected to the sealing piece, a sealing gasket is connected between the sealing piece and the adapter ring, and a second O-ring, a third O-ring and a fourth O-ring are connected between the adapter ring and the front end of the shell nozzle.

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