Self-adaptive oil collecting and heating integrated device of oil injector test bed

Abstract

The utility model discloses a self-adaptive oil collecting and heating integrated device for an oil injector test bed. The self-adaptive oil collecting and heating integrated device comprises an oil collector, the oil collector comprises a variable-diameter telescopic sleeve joint, and the variable-diameter telescopic sleeve joint comprises a plurality of taper sleeves which are sequentially arranged in a sleeving manner; a plurality of sealing rings are fixed in the middle conical opening of the taper sleeve and the straight opening of the taper sleeve located on the outer side at intervals; the middle conical opening and the lower end of the taper sleeve located on the outer side and the lower ends of the other taper sleeves are each fixedly provided with a connecting disc. A heat insulator is fixed in the shell, and a heater is fixed on the inner side of the heat insulator; the sealing ring is located in the straight opening of the taper sleeve and abuts against a nozzle of the oil sprayer, and the nozzle of the oil sprayer abuts against the sealing ring. The connecting disc of the taper sleeve located on the outer side and the connecting disc of the taper sleeve where the sealing ring abutting against the nozzle of the oil sprayer is located are fixedly connected with the shell through connecting bolts. The device adapts to different fuel injector nozzles and rapid heating of the nozzles, and simulates a real nozzle working environment.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel injector detection, in particular to a self-adaptive oil collecting and heating integrated device for a fuel injector test bench. Background Art

[0002] In the injector test, in order to simulate the actual working state of the injector, a temperature needs to be applied to the injector nozzle. Usually, hot air is blown on the nozzle surface to simulate the temperature boundary. However, this will cause the fuel sprayed from the nozzle to drift with the hot air and mix with the air. At the very least, it will cause fuel loss and pollute the environment. At worst, the fuel will burn in the air and cause a fire, endangering the safety of the test. Therefore, it is necessary to develop a device that can heat the nozzle and collect the sprayed fuel at the same time to avoid fuel waste and related safety hazards. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by this patent application is how to provide an injector test bench adaptive oil collection and heating integrated device that can achieve heating of various forms of nozzles and collection of nozzle fuel, isolate air and fuel, and avoid safety hazards.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] An adaptive oil collector and heating integrated device for an injector test bench comprises an oil collector, a sealing ring, connecting bolts, a heater, a heat insulator and a housing;

[0006] The oil collector comprises a reducer telescopic sleeve joint, which comprises a plurality of tapered sleeves which are sleeved in sequence, wherein the tapered sleeves are respectively provided with an upper cone opening, a middle cone opening and a lower cone opening along the axial direction, wherein the upper cone opening is connected to the large end of the middle cone opening, the upper cone openings and the lower cone openings of adjacent tapered sleeves have the same taper and can abut against each other, the tapers of the upper cone openings and the lower cone openings of adjacent tapered sleeves are greater than the taper of the middle cone opening, the upper cone opening of the tapered sleeve located on the outside is a straight opening, and the lower cone opening of the tapered sleeve located on the inside has the same taper as the middle taper of the tapered sleeve;

[0007] A plurality of sealing rings are fixed at intervals in the middle conical opening of the conical sleeve and in the straight opening of the conical sleeve located on the outside;

[0008] The middle cone opening and the lower end of the tapered sleeve located on the outside and the lower ends of the remaining tapered sleeves are all fixed with a connecting plate, and the connecting plate is provided with a mounting hole opposite thereto;

[0009] A heat insulator is fixed inside the shell, a heater is fixed inside the heat insulator, and the heater is arranged in the circumference of the oil collector;

[0010] The sealing ring is located in the straight opening of the tapered sleeve and abuts against the nozzle of the fuel injector, and the nozzle of the fuel injector abuts against the sealing ring;

[0011] The connection plate of the tapered sleeve located on the outside and the connection plate of the tapered sleeve where the sealing ring abutting against the nozzle of the fuel injector is located are fixedly connected to the housing through connecting bolts.

[0012] Wherein, a plurality of annular grooves are provided in the middle cone opening of the tapered sleeve, the sealing ring is fixed in the annular groove and the inner side of the sealing ring protrudes from the outer side of the annular groove.

[0013] Wherein, the upper cone ends of adjacent tapered sleeves are sharpened.

[0014] Wherein, the heater is a resistance wire heater.

[0015] Wherein, the thermal insulator adopts a thermal insulation layer.

[0016] Wherein, the shell and the heat insulator are both split structures.

[0017] In summary, this injector test bench adaptive oil collection and heating integrated device can isolate the fuel spray from the hot air, achieve rapid heating of the nozzle, reduce the risk of high temperature and fire, and simulate the real temperature environment of the injector nozzle while ensuring safety. The variable diameter telescopic sleeve joint is used in conjunction with a high temperature resistant sealing ring to achieve full sealing of the nozzle to isolate the fuel spray and air; the shell is built-in with a heat insulator, specifically a heat insulation layer, and resistance wire heating to avoid energy loss and high temperature burns caused by hot air blowing and heat transfer from the box. It can adapt to different injector nozzles and rapid heating of the nozzle to simulate the real nozzle working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a schematic structural diagram of the cooperation between an adaptive integrated oil collector and heater device of a fuel injector test bench and a fuel injector.

[0019] Figure 2 Schematic diagram of the oil collector. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings. In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "upper, lower" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0021] like Figure 1-2 As shown, an adaptive oil collector and heating integrated device for a fuel injector test bench includes an oil collector 1, a sealing ring 3, a connecting bolt 4, a heater 5, a heat insulator 6 and a housing 7;

[0022] The oil collector 1 comprises a reducer telescopic sleeve joint, which comprises a plurality of tapered sleeves which are sleeved in sequence, wherein the tapered sleeves are respectively provided with an upper cone, a middle cone and a lower cone along the axial direction, wherein the upper cone is connected to the large end of the middle cone, the upper cone and the lower cone of adjacent tapered sleeves have the same taper and can abut against each other, the upper cone and the lower cone of adjacent tapered sleeves have a taper greater than the taper of the middle cone, the upper cone of the tapered sleeve located on the outside is a straight mouth, and the lower cone of the tapered sleeve located on the inside has the same taper as the middle taper of the tapered sleeve;

[0023] Several sealing rings 1004 are fixed at intervals in the middle conical opening of the conical sleeve and in the straight opening of the conical sleeve located outside;

[0024] The middle cone opening and the lower end of the tapered sleeve located on the outside and the lower ends of the remaining tapered sleeves are all fixed with a connecting plate, and the connecting plate is provided with a mounting hole opposite thereto;

[0025] A heat insulator 6 is fixed inside the shell 7, a heater 5 is fixed inside the heat insulator 6, and the heater 5 is arranged in the circumference of the oil collector 1;

[0026] The sealing ring 3 is located in the straight opening of the tapered sleeve and abuts against the nozzle of the injector 2, and the nozzle of the injector 2 abuts against the sealing ring 1004;

[0027] The connection plate of the tapered sleeve located on the outside and the connection plate of the tapered sleeve where the sealing ring abutting against the nozzle of the injector 2 is located are fixedly connected to the housing 7 through the connecting bolts 4.

[0028] In a specific implementation, a plurality of annular grooves are opened in the middle cone of the tapered sleeve, and the sealing ring 1004 is fixed in the annular groove and the inner side of the sealing ring protrudes from the outer side of the annular groove.

[0029] During specific implementation, the upper cone ends of adjacent tapered sleeves are sharpened.

[0030] During specific implementation, the heater 5 is a resistance wire heater.

[0031] During specific implementation, the heat insulator 6 adopts a heat insulation layer.

[0032] In a specific implementation, the shell 7 and the heat insulator 6 are both split structures.

[0033] In the specific implementation, there are three tapered sleeves, which are named upper oil port 1001, middle oil port 1002 and lower oil port 1003 respectively. The upper oil port 1001 corresponds to the tapered sleeve located on the outside, and the lower oil port corresponds to the tapered sleeve located on the inside. The upper portion of the upper oil port 1001 is a straight port, and the middle and lower portions are tapered ports with a certain slope. The slope of the tapered port further increases at the lowest portion, which correspond to the upper tapered port, the middle tapered port and the lower tapered port of the tapered sleeve respectively. Several sealing rings 1004 are distributed in the grooves inside the tapered port and the straight port. There are two connecting plates outside the tapered port in the middle upper portion and the lower portion of the upper oil port. The middle oil port 1002 and the lower oil port 1003 have the same structure, the middle portion is a tapered port with a certain slope, the angle of the tapered port in the upper portion is increased, the end portion is cut to a sharp point, the slope of the lower portion of the tapered port is increased, there is also a connecting plate outside the tapered port, and several sealing rings 1004 are also distributed in the groove inside the tapered port. The upper oil port 1001, the middle oil port 1002 and the lower oil port 1003 are installed together in sequence, wherein the slope of the lower part of the cone is consistent with the slope of the upper part, so that the upper, middle and lower oil ports can fit together. Figure 2 As shown, it can be freely moved to adapt to different injectors.

[0034] In the entire integrated device, the oil collector 1 is fixed to the device housing 7 through the upper and lower connecting plates and the connecting bolts 4, and the injector 2 is fixed in the cone of the oil collector 1 and sealed by the sealing ring and the sealing ring 3. The heater 5 is arranged on the periphery of the oil collector 1 and fixed on the heat insulator 6. The heat insulator 6 is arranged between the housing 7 and the heater 5 and fixed in the housing 7 to insulate the heat generated by the heater 5. The housing 7 and the heat insulator are split, which is convenient for the disassembly and installation of the oil collector.

[0035] When performing injector-related tests on the injector test bench, first insert the injector 2 into the oil collector 1 until it is in close contact with the sealing ring in the oil collector 1, then move the corresponding oil port upward until it contacts the upper oil port and cannot move further, and seal the gap between the injector 2 and the oil collector 1 with the sealing ring 3 and fix it to prevent oil and gas from escaping. After the installation is completed, use the connecting bolts 4 to install the upper connecting plate of the upper oil port and the lower connecting plate of the corresponding oil port on the housing 7, and tighten the housing 7 and the heat insulator 6. When the operation starts, the fuel injected by the injector 2 flows along the inside of the conical mouth of the oil collector 1, and the heater 5 heats the injector nozzle and the fuel through the command of the control program. Since the slope of the connection between the oil ports is greater than the slope of the conical mouth and is sharpened, the fuel will not leak along the connection between the oil ports. At the same time, the sealing of the upper sealing ring 3 also ensures that the heated oil and gas will not leak upward. After gathering inside the conical mouth, it flows out of the oil collector 1 through the lower oil port to the circulation device such as the oil storage tank. The oil and gas will not enter the chamber in the shell 7, avoiding the accumulation of fuel mist in the shell 7, thereby generating the risk of explosion and combustion. While the heater 5 heats the injector, it also heats the surrounding environment. The heat insulation effect of the heat insulator 6 is used to prevent the heater 5 from heating the surrounding environment, avoiding the generation of high temperature dangers and energy waste.

[0036] The device can isolate the fuel circuit and the heating circuit, avoiding the risk of explosion and combustion caused by the mixing and heating of fuel and air. At the same time, the structural design of the oil collector can adapt to different injectors, avoiding repeated processing of the oil collector and reducing the cost of the test bench. By forming a closed space and contact heat transfer, the injector can be heated quickly, the test time can be shortened, and the real working environment of the injector can be simulated.

[0037] Finally, it should be noted that those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

Claims

1. An adaptive oil collector and heating integrated device for a fuel injector test bench, characterized in that: Includes oil collector, sealing ring, connecting bolts, heater, heat insulator and housing; The oil collector comprises a reducer telescopic sleeve joint, which comprises a plurality of tapered sleeves which are sleeved in sequence, wherein the tapered sleeves are respectively provided with an upper cone opening, a middle cone opening and a lower cone opening along the axial direction, wherein the upper cone opening is connected to the large end of the middle cone opening, the upper cone openings and the lower cone openings of adjacent tapered sleeves have the same taper and can abut against each other, the tapers of the upper cone openings and the lower cone openings of adjacent tapered sleeves are greater than the taper of the middle cone opening, the upper cone opening of the tapered sleeve located on the outside is a straight opening, and the lower cone opening of the tapered sleeve located on the inside has the same taper as the middle taper of the tapered sleeve; A plurality of sealing rings are fixed at intervals in the middle conical opening of the conical sleeve and in the straight opening of the conical sleeve located on the outside; The middle cone opening and the lower end of the tapered sleeve located on the outside and the lower ends of the remaining tapered sleeves are all fixed with a connecting plate, and the connecting plate is provided with a mounting hole opposite thereto; A heat insulator is fixed inside the shell, a heater is fixed inside the heat insulator, and the heater is arranged in the circumference of the oil collector; The sealing ring is located in the straight opening of the tapered sleeve and abuts against the nozzle of the fuel injector, and the nozzle of the fuel injector abuts against the sealing ring; The connection plate of the tapered sleeve located on the outside and the connection plate of the tapered sleeve where the sealing ring abutting against the nozzle of the fuel injector is located are fixedly connected to the housing through connecting bolts.

2. The self-adaptive oil collector and heater integrated device for a fuel injector test bench according to claim 1, characterized in that: A plurality of annular grooves are provided in the middle cone opening of the tapered sleeve, and the sealing ring is fixed in the annular groove and the inner side of the sealing ring protrudes from the outer side of the annular groove.

3. The self-adaptive oil collector and heater integrated device for a fuel injector test bench according to claim 1, characterized in that: The upper cone end of the adjacent tapered casing is sharpened.

4. The self-adaptive oil collector and heater integrated device for a fuel injector test bench according to claim 1, characterized in that: The heater is a resistance wire heater.

5. The self-adaptive oil collector and heater integrated device for a fuel injector test bench according to claim 1, characterized in that: The thermal insulator adopts a thermal insulation layer.

6. The self-adaptive oil collector and heater integrated device for a fuel injector test bench according to claim 1, characterized in that: The shell and the heat insulator are both split structures.

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