Tool structure for detecting flow of fuel injection pipeline of pulse engine

Abstract

The utility model relates to a tool structure for detecting the flow of an oil injection pipeline of a pulse engine, and belongs to the technical field of liquid fuel engine detection. The anti-splashing oil inlet device comprises a nest-shaped body (1), an anti-splashing eave (3), a sealing plug (4) and an oil inlet header pipe (5). The nest-shaped body (1) is of a cylindrical structure, a plurality of oil outlet holes are formed in the front face of the nest-shaped body (1), a sealing plug (4) is arranged at the front end of each oil outlet hole, an oil inlet hole is formed in the top end of the nest-shaped body (1), the oil inlet hole is connected with an oil inlet header pipe (5), and the tail end of each oil outlet hole is communicated with the oil inlet hole in the top end through an inner oil way of the nest-shaped body (1). According to the utility model, the measurement requirements of complicated test models and various sizes of products of the type are met, and finally the purpose of improving the inspection efficiency and accuracy of the products of the type is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to liquid fuel engine detection technical field, concretely relates to a detection frock structure for pulsating engine oil injection pipeline flow. BACKGROUND

[0002] The flow of the pulsating engine fuel injection manifold is one of the key technical indexes that needs 100% detection for various types of turbojet engines. The fuel injection manifold is one of the key components inside the pulsating engine, which plays an important role in inputting fuel into the engine combustion chamber and atomizing. The main structure of the fuel injection manifold of different types of pulsating engines is a stainless steel pipe with a plug structure inside the fuel injection nozzle. When working, fuel is pumped out from the fuel tank, flows into the stainless steel pipe structure of the fuel injection manifold, and is uniformly atomized and sprayed from the fuel injection nozzle on the main pipe structure and is ignited. Since the working state temperature of the pulsating engine is relatively high and the combustion process cannot be interrupted, the heat released during fuel combustion is sufficient to melt the high-temperature alloy, so the fuel combustion point needs to be controlled in the center area to protect the engine outer wall from being ablated and melted. Once the fuel pipeline of a certain fuel injection nozzle works abnormally, the inconsistent flow or different atomization effects of the fuel injection nozzle will cause the fuel combustion point to deviate, which will affect the service life of the engine, and even directly burn out the engine. Therefore, the flow detection of the fuel injection manifold is very important. At present, the flow detection of the fuel injection manifold of the pulsating engine is generally carried out by using aviation fuel as the medium, and the flow of a single fuel injection nozzle and the overall fuel injection manifold in a unit time is measured under certain pressure conditions. The electronic scale reading is read within a specified time, so as to judge whether the pipeline flow meets the requirements.

[0003] Defects of the traditional technology:

[0004] The traditional pulsating engine fuel injection manifold test needs to prepare corresponding outer diameter hoses, quick connectors and oil barrels for connecting equipment and receiving fuel for each fuel injection nozzle and the overall fuel injection manifold, and the to-be-tested product is fixed by a rope to limit its position to ensure that the oil mist does not overflow or the to-be-tested product falls below the oil surface to affect the test accuracy. When working, the to-be-tested fuel injection manifold is reliably connected with the fuel supply hose, and the fuel injection manifold and the fuel supply hose are bent and fixed by a rope, so that the fuel injection nozzle of the fuel injection manifold is downward when the fuel injection manifold is hung and placed in the oil barrel on the electronic scale, so as to ensure that the atomized oil mist does not overflow. The shortcomings are as follows: frequent replacement of the quick connector and the hose leads to oil leakage in the pipeline, affecting the test accuracy and the quality of the parts; the quick connector and the hose are not universal for different outer diameters of the fuel injection nozzle and the fuel injection manifold, and manual replacement is required after each test, which is low in working efficiency and high in fuel consumption rate; the direction of the fuel injection nozzle cannot be reliably controlled by the rope, which easily causes the oil mist to overflow from above the oil barrel, resulting in a smaller measurement result. Utility model content

[0005] (1) Technical problem to be solved

[0006] The utility model wants to solve the technical problem of how to provide a detection tool structure for the flow of the fuel injection pipeline of a pulsating engine, so as to solve the problems of low work efficiency and inaccurate measurement results that occur easily during the flow test of the fuel injection pipeline of a traditional pulsating engine.

[0007] (II) Technical solutions

[0008] To solve the above technical problems, the utility model provides a detection tool structure for the flow of the fuel injection pipeline of a pulsating engine, comprising: a nest-shaped body 1, a splash-proof eave 3, a sealing plug 4, and an oil inlet main pipe 5.

[0009] The nest-shaped body 1 is in a cylindrical structure, a plurality of oil outlet holes are formed on the front face of the nest-shaped body 1, each oil outlet hole is provided with a sealing plug 4 at the front end, an oil inlet hole is formed at the top end of the nest-shaped body 1, the oil inlet hole is connected to the oil inlet main pipe 5, and each oil outlet hole and the oil inlet hole at the top end are communicated through an oil passage inside the nest-shaped body 1. The oil injection main pipe 6 of the measured part is inserted into one of the oil outlet holes. The splash-proof eave 3 is fixed to the upper end of the cylindrical section of the nest-shaped body 1 and is used to shield the oil mist that escapes upward during the test.

[0010] The back of the nest-shaped body 1 is connected to the magnetic base 2 through threads.

[0011] The front face of the nest-shaped body 1 is evenly provided with six oil outlet holes, and the inner diameters of the oil outlet holes are different.

[0012] A rubber sleeve is arranged at the inner hole wall of each oil outlet hole to enhance the sealing performance of the connection.

[0013] The sealing plug 4 is connected to the oil outlet hole through interference fit.

[0014] (III) Advantages

[0015] The utility model provides a detection tool structure for the flow of the fuel injection pipeline of a pulsating engine, which solves the problems of the need for a conversion connector when the fuel injection pipeline is directly connected to each measured part during traditional testing, the low measurement accuracy caused by the overflow of oil mist during testing, and thus meets the measurement requirements of complex types and various sizes of products, and finally achieves the purpose of improving the inspection efficiency and accuracy of the products. DRAWINGS

[0016] Figure 1 It is a schematic diagram of the fuel injection main pipe of an engine.

[0017] Figure 2 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0018] In order to make the purpose, content and advantages of the utility model more clear, the specific implementation of the utility model is described in further detail below in combination with the drawings and examples.

[0019] The embodiment provides a detection tool structure for the flow of an oil injection pipeline of a pulsating engine, comprising: a nest-shaped body 1, a splash-proof eave 3, a sealing plug 4 and an oil inlet main pipe 5, wherein the nest-shaped body 1 is a cylindrical part, the front surface of the nest-shaped body 1 is uniformly distributed with six oil outlet holes of different sizes, the top end of the nest-shaped body 1 is provided with an oil inlet hole, the six oil outlet holes on the front surface and the oil inlet hole on the top end are communicated through the oil channel inside the cylinder, the inner hole walls of the oil outlet holes are all designed with rubber sleeves to enhance the sealing performance of the connection, the back surface of the nest-shaped body 1 is provided with a blind hole with an internal thread, and the blind hole with an internal thread is connected with a magnetic base 2 through an internal and external thread connection, so as to firmly fix the connected tool in a suitable position on the inner wall of an oil drum during testing. The nest-shaped body 1 is sealingly connected with the oil inlet main pipe 5 through a quick plug connector, so as to ensure the continuous and stable fuel supply during testing and other functions, and the connector at the position does not need to be frequently replaced and unplugged, thereby effectively ensuring the sealing performance of the product. The splash-proof eave 3 is connected with the top end of the nest-shaped body 1 through welding, so as to realize the function of shielding the upwardly escaping oil mist during testing, thereby ensuring the testing accuracy. The sealing plug 4 is made of soft rubber material and is matched with the six oil outlet holes on the side surface of the nest-shaped body 1 through interference fit, one of the sealing plugs 4 is removed as required during testing, and an oil injection pipeline 6 to be tested is inserted, so as to realize the testing function.

[0020] The utility model working process is as follows:

[0021] First, the tool is assembled, the magnetic base 2 is screwed and connected with the nest-shaped body 1 along the thread, and then the oil inlet main pipe 5 is inserted into the oil inlet hole on the top end of the nest-shaped body 1, so as to complete the tool preparation work.

[0022] Before detection, the outer diameter size of the oil injection pipeline 6 to be tested is determined, the sealing plug 4 of the corresponding size on the tool is removed according to the measured size, the oil injection pipeline 6 to be tested is inserted into the oil outlet hole of the nest-shaped body 1 from which the sealing plug 4 has been removed, the oil mist spraying direction of the oil injection pipeline 6 is adjusted to be opposite to the splash-proof eave 3, finally the whole is placed into an oil drum and fixed at a suitable position on the inner wall as required, and then the detection can be started.

[0023] During the detection process, whether the oil mist overflows on the top of the oil drum is observed, if there is an overflow phenomenon, the detection needs to be paused and the oil mist spraying direction of the oil injection pipeline 6 is adjusted, until the overflowing oil mist is completely shielded by the splash-proof eave 3 and cannot overflow the oil drum; after the test is completed, the tool is taken out, the tested product is pulled out and the residual oil is cleaned, finally the removed sealing plug 4 before detection is installed back to the original position, and thus the testing process is completed.

[0024] By designing a nest-shaped tool which can be fixed on the inner wall of the oil drum through a magnetic attraction device and has a plurality of measuring channels with sealing structure at the outlet end, a tool scheme with high measuring precision, high work efficiency and easy assembly and disassembly is designed under the premise of ensuring the measuring compatibility of the total pipe of the pulse engine of various models.

[0025] The above only describes the preferred embodiments of the present application, and it should be noted that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A fixture structure for detecting the flow rate of a fuel injection line in a pulsating engine, characterized in that, include: Nest-shaped body (1), splash guard (3), sealing plug (4), oil inlet manifold (5); The nest-shaped body (1) is a cylindrical structure. Multiple oil outlet holes are opened on the front of the nest-shaped body (1). Each oil outlet hole is equipped with a sealing plug (4) at the front end. An oil inlet hole is opened at the top of the nest-shaped body (1). The oil inlet hole is connected to the oil inlet main pipe (5). The end of each oil outlet hole and the top oil inlet hole are connected through the internal oil passage of the nest-shaped body (1). The oil spray main pipe (6) of the test piece is inserted into one of the oil outlet holes. The splash guard (3) is fixed on the upper end of the cylindrical section of the nest-shaped body (1) to block the upward oil mist during the test.

2. The fixture structure for detecting the flow rate of the fuel injection pipeline in a pulsating engine as described in claim 1, characterized in that, The back of the nest-shaped body (1) is connected to a magnetic base (2) via a thread.

3. The fixture structure for detecting the flow rate of the fuel injection pipeline in a pulsating engine as described in claim 1, characterized in that, The nest-shaped body (1) has six oil outlet holes evenly distributed on its front side, and each oil outlet hole has a different inner diameter.

4. The fixture structure for detecting the flow rate of the fuel injection line in a pulsating engine as described in claim 1, characterized in that, Each oil outlet has a rubber sleeve on its inner wall to enhance the sealing of the connection.

5. The fixture structure for detecting the flow rate of the fuel injection line in a pulsating engine as described in claim 1, characterized in that, The sealing plug (4) is connected to the oil outlet by an interference fit.

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