CN216278237U

CN216278237U - Oil sprayer testing device

Info

Publication number: CN216278237U
Application number: CN202122635368.3U
Authority: CN
Inventors: 李玉华; 王飞虎; 李豪; 符永乐; 李小虎; 曹令武; 马轲; 陈建; 曹吉长; 丛有才
Original assignee: China General Nuclear Power Corp; CGN Power Co Ltd; China Nuclear Power Operation Co Ltd
Current assignee: China General Nuclear Power Corp; CGN Power Co Ltd; China Nuclear Power Operation Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-12
Anticipated expiration: 2031-10-29

Abstract

The utility model relates to a fuel injector testing device, which comprises a fuel injection system and a fuel return system, wherein the fuel injection system comprises a fuel supply tank, a main pump, a fuel injector and a fuel supply pipeline, and the fuel supply tank, the pump and the fuel injector are sequentially communicated through the fuel supply pipeline; the oil return system comprises an observation cover, an oil suction pump, an oil return box and an oil return pipeline, the oil injector is arranged above the observation cover, an oil injection port of the oil injector extends into the observation cover, the oil suction pump and the oil return box are sequentially connected through the oil return pipeline, the oil suction pump is used for absorbing atomized oil in the observation cover into the oil return box, an air vent is formed in the observation cover, and the air vent is used for balancing internal and external pressures of the observation cover. The oil suction pump can rapidly suck the atomized oil in the observation cover, so that the test duration can be shortened, and the test efficiency is improved. Atomized oil liquid absorbed by the oil suction pump can be recovered into the oil return tank, so that atmospheric pollution and flammable and explosive risks caused by the fact that the oil liquid is directly discharged into the air are avoided.

Description

Oil sprayer testing device

Technical Field

The utility model relates to the technical field of oil sprayer testing, in particular to an oil sprayer testing device.

Background

The oil injector is a precision device with very high processing precision, and is required to have a large dynamic flow range, strong anti-blocking and anti-pollution capacity and good atomization performance. The fuel injector can accurately control the fuel injection quantity by receiving the fuel injection pulse signal sent by the control unit. The fuel injector with good atomization effect can form good mixed gas and has higher thermal efficiency.

At present, a fuel injector testing device generally comprises a testing platform and an observation cover arranged on the testing platform, wherein a fuel injector is arranged on the observation cover, and a fuel injection port of the fuel injector is positioned in the observation cover. The oil sprayer can spray the oil into the observation cover in an atomized mode, and workers can observe the atomization effect of the oil sprayer through the observation cover.

When the oil sprayer finishes spraying atomized oil in one stage in the observation cover, the oil sprayer can spray oil in the next stage only after the atomized oil is automatically dissipated, and if the oil mist is not completely dissipated, the next stage of test is carried out, so that the observation of the atomization effect of the oil sprayer by workers can be influenced. Therefore, at present, the testing time of the fuel injector is long, and the testing or overhauling efficiency is low.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide an injector testing apparatus for solving the problem of an injector testing time being too long.

A fuel injector testing apparatus comprising:

the fuel injection system comprises an oil supply tank, a main pump and an oil supply pipeline, wherein the oil supply tank, the main pump and the fuel injector are sequentially communicated through the oil supply pipeline, and the main pump is used for pumping oil in the oil supply tank into the fuel injector;

the oil return system, the oil return system is including observing cover, oil suction pump, oil return tank and oil return pipeline, and the sprayer is used for setting up in the top of observing the cover, and the nozzle of sprayer is located and observes the cover, it connects gradually through oil return pipeline to observe cover, oil suction pump and oil return tank, the oil suction pump is used for absorbing the atomizing oil in observing the cover to oil return tank in through oil return pipeline, the blow vent has been seted up on the observation cover, the blow vent is used for the balanced inside and outside pressure of observing the cover.

In one embodiment, the oil return system further includes:

the first filter is arranged on the oil return pipeline and positioned between the oil suction pump and the observation cover, and the first filter is used for filtering oil from the observation cover.

In one embodiment, the main pump and the oil suction pump are both hydropneumatic pumps;

the oil sprayer testing device also comprises an air supply system, the air supply system comprises a compressed air source and an air supply pipeline,

the main pump is connected with the compressed air source through the air supply pipeline;

the oil suction pump is connected with the compressed air source through the air supply pipeline.

In one embodiment, the gas supply system comprises:

the stop valve and the pressure regulating valve are both arranged on the air supply pipeline between the compressed air source and the main pump.

In one embodiment, the gas supply system further comprises:

the air pressure gauge is arranged on the air supply pipeline between the compressed air source and the main pump, and is provided with a switch.

In one embodiment, the fuel injection system further comprises: the oil pressure gauge is arranged between the main pump and the oil injector.

In one embodiment, the fuel injection system further includes a second filter disposed between the fuel supply tank and the main pump.

In one embodiment, the fuel injector testing device further comprises a testing platform and a cabinet body, the cabinet body is arranged at the bottom of the testing platform, the fuel supply tank, the main pump, the oil suction pump and the oil return tank are all arranged in the cabinet body, and the fuel injector and the observation cover are arranged on the testing platform.

In one embodiment, the fuel injector testing device further comprises a disassembling tool, the disassembling tool is arranged on the testing platform, and when the fuel injector needs to be disassembled, the disassembling tool is used for clamping one end of the fuel injector disassembled from the observation cover.

In one embodiment, the disassembling tool includes:

the fixed block is connected with the test board, a through hole is formed in the fixed block, and the oil injector penetrates through the through hole when the oil injector needs to be disassembled; and

and the clamping piece is arranged in the through hole and is used for being matched with the oil injector in the through hole.

According to the oil sprayer testing device, the oil suction pump and the air vent are arranged, before oil spraying of the oil sprayer, the air vent is closed firstly, so that the inside of the observation cover is in a relatively sealed state, then the oil sprayer sprays oil, after the oil sprayer finishes oil spraying in one stage, the oil suction pump is opened, atomized oil in the observation cover is quickly sucked, after all the atomized oil in the observation cover is dissipated, the oil suction pump is closed, the air vent is opened, after air pressure in the observation cover is recovered, the air vent is closed, and oil spraying in the next stage is carried out again. The oil suction pump can rapidly suck the atomized oil in the observation cover, so that the test duration can be shortened, and the test efficiency is improved. Atomized oil liquid absorbed by the oil suction pump can be recovered into the oil return tank, so that atmospheric pollution and flammable and explosive risks caused by the fact that the oil liquid is directly discharged into the air are avoided.

Drawings

FIG. 1 is a schematic diagram of a fuel injector testing apparatus according to an embodiment;

fig. 2 is a top view of fig. 1.

Reference numerals: 100-oil injection system; 110-an oil supply tank; 120-main pump; 130-oil supply line; 140-oil pressure gauge; 150-a second filter;

200-an oil return system; 210-a viewing mask; 211-vent; 220-an oil suction pump; 230-an oil return tank; 240-oil return line; 250-a first filter;

300-a gas supply system; 310-a compressed gas source; 320-a gas supply line; 330-a stop valve; 340-pressure regulating valve; 350-a barometer;

500-a test bench; 510-a cabinet body; 520-disassembling the tool; 521-a fixed block; 522-through holes; 523-fastener;

600-oil sprayer.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, an embodiment of the present invention provides an injector testing apparatus, which includes a fuel injection system 100 and a fuel return system 200.

The fuel injection system 100 comprises a fuel supply tank 110, a main pump 120 and a fuel supply pipeline 130, the fuel supply tank 110, the main pump 120 and the fuel injector 600 are sequentially communicated through the fuel supply pipeline 130, the main pump 120 is used for pumping oil in the fuel supply tank 110 into the fuel injector through the fuel supply pipeline 130, namely the main pump 120 can provide oil with certain pressure for the fuel injector 600, so that the pressure of the oil in the fuel injector 600 reaches the starting pressure of the fuel injector 600, and the fuel injector 600 can inject fuel. The oil supply tank 110 is provided with a liquid level indicator, which can display the height of the liquid level in the oil supply tank 110 in real time, so that the working personnel can supply oil to the oil supply tank 110 in time.

The oil return system 200 includes an observation cover 210, an oil suction pump 220, an oil return tank 230, and an oil return pipeline 240, the oil injector 600 is disposed above the observation cover 210, and an oil injection port of the oil injector 600 is located in the observation cover 210.

The observation cover 210, the oil suction pump 220 and the oil return tank 230 are sequentially connected through an oil return pipeline 240, and the height of the oil return tank 230 is lower than that of the observation cover 210, so that atomized oil dropping in the observation cover 210 can be conveniently recovered into the oil return tank 230 through the oil return pipeline 240. The oil suction pump 220 is arranged at the upper part of the oil return tank 230, the oil suction pump 220 is used for quickly absorbing atomized oil in the observation cover 210 into the oil return tank 230, the observation cover 210 is provided with a vent 211, and the vent 211 is used for balancing internal and external pressure of the observation cover 210, so that the change of pressure in the observation cover 210 caused by suction of the oil suction pump 220 is prevented, and the atomization effect of the oil injector 600 is influenced.

In this embodiment, by providing the oil suction pump 220 and the vent 211, before the oil injector 600 injects oil, the vent is first closed, so that the inside of the observation cover 210 is in a relatively sealed state, then the oil injector 600 injects oil, after the oil injector 600 finishes injecting oil in one stage, the oil suction pump 220 is opened, atomized oil inside the observation cover 210 is rapidly sucked, after all the atomized oil inside the observation cover 210 dissipates, the oil suction pump 220 is closed, the vent 211 is opened, so that after the air pressure inside the observation cover 210 is restored, the vent 211 is then closed, and oil injection in the next stage is performed again. That is, the oil suction pump 220 can rapidly suck the atomized oil in the observation cover 210, so that the test duration can be shortened, and the test efficiency can be improved. And the atomized oil absorbed by the oil suction pump 220 can be recovered into the oil return tank 230, so that the atmospheric pollution and the flammable and explosive risks caused by the direct discharge of the oil into the air are avoided.

Specifically, a fuel injector fixing device is arranged above the observation cover 210, the fuel injector 600 is installed in the fuel injector fixing device, a fuel injection port of the fuel injector 600 is located in the observation cover 210, and one end, far away from the fuel injection port, of the fuel injector 600 is connected with the fuel supply pipeline 130 through a quick coupling. The specific structure of the fuel injector fixing device can be that a fuel injector mounting groove and a bolt hole are formed in the fuel injector fixing device and communicated with each other, during installation, the fuel injector 600 is placed in the mounting groove, a bolt matched with the bolt hole is screwed into the bolt hole, and then one end of the bolt is abutted to the fuel injector 600 through rotating the bolt, so that the fuel injector 600 is fixed. The observation cover 210 may be made of an acrylic transparent material, which facilitates clear observation of the atomization effect of the fuel injector 600.

In some embodiments, the oil return system 200 further includes a first filter 250, and the first filter 250 is disposed on the oil return line 240 and between the oil suction pump 220 and the observation cover 210. In use, oil from the observation cover 210 is first sucked into the first filter 250, purified in the first filter 250, and then sucked into the oil return tank 230 through the oil suction pump 220.

In some embodiments, the main pump 120 and the oil suction pump 220 are both hydropneumatic pumps. The fuel injector 600 testing device further comprises a gas supply system 300, wherein the gas supply system 300 comprises a compressed gas source 310 and a gas supply pipeline 320, the main pump 120 is connected with the compressed gas source 310 through the gas supply pipeline 320, and the oil suction pump 220 is connected with the compressed gas source 310 through the gas supply pipeline 320.

In this embodiment, the compressed air source 310 serves as a power source, the hydraulic air-driven pump serves as a pressure source, and the pressure of the compressed air source 310 is in direct proportion to the output pressure of the hydraulic air-driven pump, that is, the output pressure of the hydraulic air-driven pump can be adjusted by adjusting the output pressure of the compressed air source 310. In addition, in contrast to the use of electric power as the power source, the use of electric power as the power source in the embodiment has the risk of explosion because the electric power is likely to generate sparks due to static electricity after being grounded.

In some embodiments, the air supply system 300 includes a shut-off valve 330 and a pressure gauge 350, both the shut-off valve 330 and the pressure gauge 350 being disposed on the air supply line 320 between the compressed air source 310 and the main pump 120.

In this embodiment, when the pressure of the compressed air source 310 is balanced with the output pressure of the hydraulic air-driven pump, the stop valve 330 and the hydraulic air-driven pump may be closed, that is, the output pressure of the hydraulic air-driven pump is stabilized at the preset pressure, and at this time, the sealing performance of the fuel injector 600 can be detected by observing the pressure in the air pressure gauge 350.

In some embodiments, the air supply system 300 further comprises a pressure regulating valve 340, the pressure regulating valve 340 being disposed on the air supply line 320 between the compressed air source 310 and the main pump 120. The output pressure of the hydraulic gas drive pump can be controlled by adjusting the pressure regulating valve 340, and the pressure of the oil entering the oil injector 600 can be adjusted.

In some embodiments, fuel injection system 100 further includes an oil pressure gauge 140, and oil pressure gauge 140 is disposed between main pump 120 and fuel injector 600.

The oil pressure gauge 140 is used to directly display the oil pressure in the fuel injector 600, and the oil pressure gauge 140 can be used to test the startability of the fuel injector 600 during actual testing. The specific operation method comprises the following steps: first, the output pressure of the hydraulic gas drive pump is regulated by the pressure regulating valve 340, and the oil pressure in the gas supply line 320 is recorded by the oil pressure gauge 140, when the injector 600 starts to spray atomized oil, that is, the oil pressure at this time is the start oil pressure required by the injector 600.

The oil pressure gauge 140 has an on-off valve, and the injector testing apparatus needs to provide high-pressure water cleaning to the fuel injection system 100 during cleaning, so that the on-off valve on the oil pressure gauge 140 can be closed to prevent the oil pressure gauge 140 from being damaged by high-pressure water impact.

In some embodiments, fuel injection system 100 further includes a second filter 150, and second filter 150 is disposed between oil supply tank 110 and main pump 120. Since the injector 600 is a precision device, the second filter 150 is a precision filter to prevent impurities in the oil from entering the injector 600 and causing clogging of the injector 600.

In some embodiments, the fuel injector 600 testing apparatus further includes a testing platform 500 and a cabinet 510, the cabinet 510 is disposed at the bottom of the testing platform 500, the fuel supply tank 110, the main pump 120, the oil suction pump 220, and the oil return tank 230 are disposed in the cabinet 510, and the observation cover 210 is disposed on the testing platform 500, so that a worker can observe the atomization effect of the fuel injector 600. Stop valve 330, barometer, the pressure-regulating valve 340 on the air supply line 320 and the oil pressure gauge 140 on the air supply line 320 all pass test bench 500 and set up on test bench 500, and the part that the required operation of this application or observation record all sets up on test bench 500 promptly, and the part that need not the operation or observe the record all sets up in cabinet 510, and whole sprayer 600 testing arrangement's compact structure, and the operation of being convenient for, the practicality is strong. The bottom of the cabinet 510 can also be provided with a pulley, so that the fuel injector testing device can be conveniently moved.

Referring to fig. 1 and 2, in some embodiments, the fuel injector testing apparatus further includes a disassembly tool 520, the disassembly tool 520 is disposed on the testing platform 500, when the tested fuel injector 600 fails and needs to be disassembled, the fuel injector 600 is placed in the disassembly tool 520 in a clamping manner, and the disassembly tool 520 can clamp one end of the fuel injector 600.

Further, the disassembly tool 520 comprises a fixing block 521 and a clamping piece 523, the fixing block 521 is connected with the test bench 500, a through hole 522 is formed in the fixing block 521, and the clamping piece 523 is arranged in the through hole 522 and is used for being matched with the oil injector 600 located in the through hole 522 to prevent the oil injector 600 from falling after penetrating out of the bottom of the through hole 522. For example, when the fuel injector 600 is the UD45 fuel injector 600, the UD45 fuel injector 600 has a notch, and the clip 523 may be a bolt passing through the through hole 522, and the bolt passes through the notch to clamp the fuel injector 600.

Specifically, the fixing blocks 521 are welded or screwed on the side surface of the test table 500, the number of the fixing blocks 521 may be multiple, and the fixing blocks 521 are used for fixing the fuel injectors 600 of different models respectively. The shape of through-hole 522 may match the shape of fuel injector 600 to limit rotation of fuel injector 600 in the circumferential direction. When the fuel injector 600 needs to be disassembled, the fuel injector 600 is arranged in the through hole 522 in a penetrating mode, and then the fuel injector 600 is disassembled by using a disassembling tool.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A fuel injector testing device is used for testing the performance of a fuel injector, and is characterized by comprising:

the fuel injection system comprises an oil supply tank, a main pump and an oil supply pipeline, wherein the oil supply tank, the main pump and the fuel injector are sequentially communicated through the oil supply pipeline, and the main pump is used for pumping oil in the oil supply tank to the fuel injector;

2. The fuel injector testing arrangement of claim 1, characterized in that the oil return system further comprises:

3. The fuel injector testing arrangement according to claim 1, characterized in that the main pump and the oil suction pump are both hydropneumatic pumps;

the oil sprayer testing device also comprises an air supply system, wherein the air supply system comprises a compressed air source and an air supply pipeline, and the main pump is connected with the compressed air source through the air supply pipeline; the oil suction pump is connected with the compressed air source through the air supply pipeline.

4. The fuel injector testing arrangement according to claim 3, characterized in that the gas supply system comprises:

5. The fuel injector testing arrangement according to claim 3, characterized in that the gas supply system further comprises:

6. The fuel injector testing apparatus of claim 1, wherein the fuel injection system further comprises: the oil pressure gauge is arranged between the main pump and the oil injector.

7. The fuel injector testing apparatus of claim 1, characterized in that said fuel injection system further comprises a second filter disposed between said fuel supply tank and said main pump.

8. The fuel injector testing apparatus of claim 1, further comprising a test table and a cabinet, wherein the cabinet is disposed at a bottom of the test table, the fuel supply tank, the main pump, the fuel suction pump, and the oil return tank are disposed in the cabinet, and the fuel injector and the observation enclosure are disposed on the test table.

9. The fuel injector testing device according to claim 8, further comprising a disassembly tool, wherein the disassembly tool is arranged on the testing platform, and when the fuel injector needs to be disassembled, the disassembly tool is used for clamping one end of the fuel injector disassembled from the observation cover.

10. The fuel injector testing arrangement of claim 9 wherein the disassembly tool comprises: