CN219827012U - Trace detection mechanism for fuel leakage at pump shaft end of high-pressure common rail - Google Patents
Trace detection mechanism for fuel leakage at pump shaft end of high-pressure common rail Download PDFInfo
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- CN219827012U CN219827012U CN202321086846.2U CN202321086846U CN219827012U CN 219827012 U CN219827012 U CN 219827012U CN 202321086846 U CN202321086846 U CN 202321086846U CN 219827012 U CN219827012 U CN 219827012U
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- clamp
- detection mechanism
- trace detection
- mechanism according
- clamping plate
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- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 239000000446 fuel Substances 0.000 title abstract description 16
- 239000003921 oil Substances 0.000 claims description 48
- 239000007788 liquid Substances 0.000 claims description 14
- 239000000295 fuel oil Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011179 visual inspection Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a trace detection mechanism for fuel leakage at the end of a pump shaft of a high-pressure common rail, which comprises a rack, wherein a fixed clamp is fixedly connected to the rack, a movable clamp is arranged on one side of the rack, which is positioned on the fixed clamp, the movable clamp is connected with a driving mechanism, and the driving mechanism is used for adjusting the interval between the movable clamp and the fixed clamp; the high-pressure oil rail is placed in the clamping groove of the lower clamping plate, the hand wheel is rotated to drive the adjusting screw rod to rotate, so that the fixed clamp and the movable clamp are positioned at two side ends of the high-pressure oil rail, and are fixed by the fixed clamp and the movable clamp to avoid contact with a joint of the high-pressure oil rail.
Description
Technical Field
The utility model relates to the technical field of high-pressure fuel rails, in particular to a trace detection mechanism for fuel leakage at a pump shaft end of a high-pressure common rail.
Background
The high-pressure common rail fuel system specifically comprises a common rail pump, a common rail pipe, a fuel injector, an ECU, a sensor and the like. The fuel is input into the common rail pump from the fuel tank through the fuel filter, pressurized in the plunger cavity and then sent into the common rail pipe, the pressure in the common rail pipe is controlled according to the pressure regulating signal sent by the ECU, the fuel is input into the fuel injector through the high-pressure oil pipe, and the fuel injector sprays the fuel into the combustion chamber of the diesel engine in a proper fuel injection action according to the instruction sent by the ECU.
In the prior art, when the high-pressure oil rail is detected, a visual inspection method is generally adopted, and cracks or welded joints are easily observed at the appearance of the oil rail, but fine cracks are difficult to find by visual inspection of the appearance, so that the detection accuracy is reduced.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a trace detection mechanism for fuel leakage at the end of a pump shaft of a high-pressure common rail, which comprises a frame, wherein a fixed clamp is fixedly connected to the frame, a movable clamp is arranged on one side of the frame, which is positioned on the fixed clamp, the movable clamp is connected with a driving mechanism, and the driving mechanism is used for adjusting the interval between the movable clamp and the fixed clamp;
the machine frame is also provided with a liquid storage barrel, the liquid storage barrel is communicated with an oil inlet of the oil pump through a pipeline, an oil outlet of the oil pump is connected with a shunt pipe, the tail end of the shunt pipe is connected with a plurality of connecting pieces, and a plugging piece is installed at an oil return joint of the high-pressure oil rail.
Preferably: the driving mechanism comprises an adjusting screw rod which is in threaded connection with the movable clamp, and the adjusting screw rod is perpendicular to the fixed clamp.
Preferably: the adjusting screw is rotationally connected with the screw support through a bearing, and the screw support is fixedly connected with the frame.
Preferably: the screw rod support is characterized in that a sliding rail is arranged at the inner side of the screw rod support and fixedly connected with the frame.
Preferably: the movable clamp comprises an upper clamping plate and a lower clamping plate, and clamping grooves are formed in the joints of the upper clamping plate and the lower clamping plate.
Preferably: through holes are formed in two ends of the upper clamping plate and the lower clamping plate, and the upper clamping plate and the lower clamping plate penetrate through the through holes through bolts to be fixed.
Preferably: the bottom end of the lower clamping plate is fixedly connected with a sliding block, and the sliding block is in sliding connection with a sliding rail.
Preferably: the lower clamping plate is provided with a threaded hole corresponding to the adjusting screw rod, and the lower clamping plate is in threaded connection with the adjusting screw rod.
Preferably: the switch-on piece includes first casing, and first casing is cylindric, and first casing top is equipped with the through-hole and communicates the shunt tubes, and the outer wall fixed connection of first casing is first internal thread pipe, installs first fastening bolt in the first internal thread pipe.
Preferably: the plugging piece comprises a second shell, the second shell is cylindrical, the top end of the second shell is sealed, the bottom of the second shell is open, the outer wall of the second shell is fixedly connected with a second internal thread pipe, and a second fastening bolt is installed in the second internal thread pipe.
The utility model has the technical effects and advantages that:
according to the utility model, the liquid in the liquid storage barrel is pumped by the oil pump, the liquid enters the high-pressure oil rail in a closed state from the shunt pipe and the connecting piece, and whether the liquid leaks or not is observed to judge the tightness of the high-pressure oil rail, so that the detection accuracy can be greatly improved.
Drawings
FIG. 1 is a schematic diagram of a trace detection mechanism according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a driving mechanism in a trace detection mechanism according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a movable clamp in a trace detection mechanism according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of the structure of the switch-on member in the trace detection mechanism according to the embodiment of the present utility model;
fig. 5 is a schematic structural diagram of a plugging member in the trace detection mechanism according to the embodiment of the utility model.
In the figure: 1. a frame; 2. a fixing clamp; 3. a movable clamp; 301. an upper clamping plate; 302. a lower clamping plate; 3021. a slide block; 3022. a threaded hole; 3023. a clamping groove; 4. a driving mechanism; 401. adjusting a screw rod; 402. a screw rod bracket; 403. a hand wheel; 404. a slide rail; 5. a liquid storage barrel; 6. an oil pump; 7. a shunt; 8. a switch-on member; 801. a first housing; 802. a first internally threaded tube; 803. a first fastening bolt; 9. a blocking member; 901. a second housing; 902. a second internally threaded tube; 903. and a second fastening bolt.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the detailed description. The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.
Referring to fig. 1-5, in this embodiment, a trace detection mechanism for fuel leakage at a pump shaft end of a high-pressure common rail is provided, which comprises a frame 1, a fixed clamp 2 is fixedly connected to the frame 1, a movable clamp 3 is arranged on one side of the frame 1, which is located on the fixed clamp 2, the movable clamp 3 is connected with a driving mechanism 4, the driving mechanism 4 is used for adjusting the distance between the movable clamp 3 and the fixed clamp 2, a liquid storage barrel 5 is further arranged on the frame 1, the liquid storage barrel 5 is communicated with an oil inlet hole of an oil pump 6 through a pipeline, an oil outlet hole of the oil pump 6 is connected with a shunt tube 7, the tail end of the shunt tube 7 is connected with a plurality of connecting pieces 8, each connecting piece 8 is connected with a one-way valve, and a plugging piece 9 is arranged at an oil return joint of the high-pressure oil rail.
In this embodiment, actuating mechanism 4 includes accommodate the lead screw 401, accommodate the lead screw 401 threaded connection activity anchor clamps 3, accommodate the lead screw 401 and set up perpendicularly with mounting fixture 2, accommodate the lead screw 401 and rotate the connection lead screw support 402 through the bearing, lead screw support 402 fixed connection frame 1, accommodate the lead screw 401 outside end fixed connection hand wheel 403, be located lead screw support 402 inboard department and be provided with slide rail 404, slide rail 404 fixed connection frame 1, during the use, rotate hand wheel 403 and drive accommodate the lead screw 401 rotation, make activity anchor clamps 3 remove along accommodate the lead screw 401, simultaneously, activity anchor clamps 3 slide along slide rail 404, can adjust the distance between activity anchor clamps 3 and the mounting fixture 2, activity anchor clamps 3 and mounting fixture 2 centre gripping are at the both ends of high-pressure oil rail, be used for high-pressure oil rail is fixed, and be fit for the high-pressure oil rail fixed use of different length.
Further, the movable clamp 3 comprises an upper clamp plate 301 and a lower clamp plate 302, clamp grooves 3023 are formed in the joint of the upper clamp plate 301 and the lower clamp plate 302, the clamp grooves 3023 are arc surfaces, through holes are formed in two ends of the upper clamp plate 301 and the lower clamp plate 302, the upper clamp plate 301 and the lower clamp plate 302 are fixed through the through holes through bolts, a sliding block 3021 is fixedly connected to the bottom end of the lower clamp plate 302, the sliding block 3021 is slidably connected with a sliding rail 404, a threaded hole 3022 is formed in the lower clamp plate 302 corresponding to the adjusting screw rod 401, the adjusting screw rod 401 is in threaded connection with the lower clamp plate 302, the structural design of the fixed clamp 2 is identical to that of the movable clamp 3, during use, a high-pressure oil rail is placed on the lower clamp plate 302, the upper clamp plate 301 is fixed with the lower clamp plate 302 through bolts, the high-pressure oil rail is further fixed, the hand wheel 403 is rotated to drive the adjusting screw rod 401 to rotate, the position of the lower clamp plate 302 is adjusted, and then the distance between the movable clamp 3 and the fixed clamp 2 is convenient to fix the high-pressure oil rail.
In this embodiment, the connecting member 8 includes a first housing 801, the first housing 801 is cylindrical, a through hole is provided at the top end of the first housing 801 and is communicated with the shunt tube 7, the outer wall of the first housing 801 is fixedly connected with a first internal thread tube 802, a first fastening bolt 803 is installed in the first internal thread tube 802, the plugging member 9 includes a second housing 901, the second housing 901 is cylindrical with a top end sealed and a bottom opening, the outer wall of the second housing is fixedly connected with a second internal thread tube 902, a second fastening bolt 903 is installed in the second internal thread tube 902, and when the sealing rings are placed inside the connecting member 8 and the plugging member 9.
During installation, the connecting piece 8 is sleeved at the high-pressure oil interface, the first fastening bolt 803 is screwed, the connecting piece 8 is fixed with the high-pressure oil interface, the blocking piece 9 is sleeved at the oil return joint, the second fastening bolt 903 is screwed, and the blocking piece 9 is fixed with the oil return joint.
The working principle of the utility model is as follows:
when the hydraulic oil rail is used, the high-pressure oil rail is placed in the clamping groove 3023 of the lower clamping plate 302, the hand wheel 403 is rotated to drive the adjusting screw 401 to rotate, so that the fixed clamp 2 and the movable clamp 3 are positioned at two side ends of the high-pressure oil rail, contact with a joint of the high-pressure oil rail is avoided when the fixed clamp 2 and the movable clamp 3 are used for fixing, the connecting piece 8 is connected with a high-pressure oil interface, the blocking piece 9 is connected with an oil return joint, the oil pump 6 is started, liquid in the liquid storage barrel 5 is extracted, the liquid enters the high-pressure oil rail from the shunt pipe 7 and the connecting piece 8, the high-pressure oil rail is in a closed state, if oil seepage occurs, the high-pressure oil rail is unqualified, and if no oil seepage occurs, the high-pressure oil rail is qualified.
It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present utility model without the inventive step, are intended to be within the scope of the present utility model. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (10)
1. The trace detection mechanism for the fuel oil leakage at the pump shaft end of the high-pressure common rail comprises a frame (1) and is characterized in that a fixed clamp (2) is fixedly connected to the frame (1), a movable clamp (3) is arranged on one side of the frame (1) positioned on the fixed clamp (2), the movable clamp (3) is connected with a driving mechanism (4), and the driving mechanism (4) is used for adjusting the distance between the movable clamp (3) and the fixed clamp (2);
the oil storage device is characterized in that a liquid storage barrel (5) is further arranged on the frame (1), the liquid storage barrel (5) is communicated with an oil inlet of the oil pump (6) through a pipeline, an oil outlet of the oil pump (6) is connected with a shunt pipe (7), the tail end of the shunt pipe (7) is connected with a plurality of connecting pieces (8), and a plugging piece (9) is arranged at an oil return joint of the high-pressure oil rail.
2. The trace detection mechanism according to claim 1, wherein the driving mechanism (4) comprises an adjusting screw (401), the adjusting screw (401) is in threaded connection with the movable clamp (3), and the adjusting screw (401) is arranged perpendicular to the fixed clamp (2).
3. The trace detection mechanism according to claim 2, wherein the adjusting screw (401) is rotatably connected to a screw bracket (402) through a bearing, and the screw bracket (402) is fixedly connected to the frame (1).
4. A trace detection mechanism according to claim 3, wherein a slide rail (404) is provided at the inner side of the screw support (402), the slide rail (404) being fixedly connected to the frame (1).
5. The trace detection mechanism according to claim 1, wherein the movable clamp (3) comprises an upper clamp plate (301) and a lower clamp plate (302), and clamp grooves (3023) are formed in the connecting positions of the upper clamp plate (301) and the lower clamp plate (302).
6. The trace amount detecting mechanism according to claim 5, wherein through holes are provided at both ends of the upper clamping plate (301) and the lower clamping plate (302), and the upper clamping plate (301) and the lower clamping plate (302) are fixed through the through holes by bolts.
7. The trace detection mechanism according to claim 6, wherein the bottom end of the lower clamping plate (302) is fixedly connected with a sliding block (3021), and the sliding block (3021) is slidably connected with the sliding rail (404).
8. The trace detection mechanism according to claim 7, wherein the lower clamping plate (302) is provided with a threaded hole (3022) corresponding to the adjusting screw (401), and the lower clamping plate (302) is in threaded connection with the adjusting screw (401).
9. The micro-detection mechanism according to claim 1, wherein the connecting piece (8) comprises a first shell (801), the first shell (801) is cylindrical, a through hole is formed in the top end of the first shell (801) and is communicated with the shunt tube (7), the outer wall of the first shell (801) is fixedly connected with a first internal thread tube (802), and a first fastening bolt (803) is installed in the first internal thread tube (802).
10. The trace detection mechanism according to claim 1, wherein the plugging piece (9) comprises a second shell (901), the second shell (901) is cylindrical with a top end sealed and a bottom opening, the outer wall of the second shell is fixedly connected with a second internal thread pipe (902), and a second fastening bolt (903) is installed in the second internal thread pipe (902).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321086846.2U CN219827012U (en) | 2023-05-06 | 2023-05-06 | Trace detection mechanism for fuel leakage at pump shaft end of high-pressure common rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321086846.2U CN219827012U (en) | 2023-05-06 | 2023-05-06 | Trace detection mechanism for fuel leakage at pump shaft end of high-pressure common rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219827012U true CN219827012U (en) | 2023-10-13 |
Family
ID=88273061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321086846.2U Active CN219827012U (en) | 2023-05-06 | 2023-05-06 | Trace detection mechanism for fuel leakage at pump shaft end of high-pressure common rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219827012U (en) |
-
2023
- 2023-05-06 CN CN202321086846.2U patent/CN219827012U/en active Active
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