CN214660578U - Electric control high-pressure common rail system tightness detection device - Google Patents
Electric control high-pressure common rail system tightness detection device Download PDFInfo
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- CN214660578U CN214660578U CN202120260428.5U CN202120260428U CN214660578U CN 214660578 U CN214660578 U CN 214660578U CN 202120260428 U CN202120260428 U CN 202120260428U CN 214660578 U CN214660578 U CN 214660578U
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Abstract
The utility model discloses an automatically controlled high pressure is rail system leakproofness detection device altogether, including the high pressure gas source subassembly, with steady voltage pipeline, oil pump subassembly that the high pressure gas source subassembly is connected, with the filter line that the oil pump subassembly is connected, respectively with the mixing tube way that steady voltage pipeline and filter line are connected simultaneously, peg graft respectively in a plurality of connecting tubes of mixing tube way tail end, respectively with a plurality of automatically controlled high pressure rail system that the connecting tube connects, all be provided with pressure sensor on mixing tube way and the connecting tube way, it is a plurality of automatically controlled high pressure rail system's kneck all is provided with sealed detection subassembly for detect the leakproofness of each pipe connection of automatically controlled high pressure rail system altogether. In this way, the utility model discloses set up pressure sensor, through differential pressure method detecting system internal seal nature to can detect the different automatically controlled high-pressure system of multiunit simultaneously through the mode of pegging graft, and can carry out the leakproofness to each connector above that and detect.
Description
Technical Field
The utility model relates to a diesel engine field especially relates to an automatically controlled high pressure common rail system leakproofness detection device.
Background
With the rapid increase of urban transportation vehicles and ships in various countries in the world, the tail gas emitted by diesel engines has become a main pollution source for the global environment, and various countries in the world have started to find and take effective technical measures to actively reduce and control the emission of pollutants.
The electronic control high-pressure common rail system has various components and complex installation, and in order to reduce potential safety hazards and ensure normal work of the system, the constant high-pressure tightness of the high-pressure common rail system needs to be ensured.
The prior art provides a high-pressure common rail system tightness detection device, which comprises a common rail injection pump separated from a common rail diesel engine, wherein a motor for driving the common rail injection pump to act is arranged corresponding to the common rail injection pump; the utility model discloses a rail injection pump is altogether exported to the peripheral hardware, detect the verification to its leakproofness through measuring the internal fuel pressure of rail system altogether, avoided repeated dismouting and played the guard action to the diesel engine, however its additional a whole set of oil feed subassembly carries out the leakproofness and detects, the huge use of structure is inconvenient, the device fails to detect the fuel supply module leakproofness of automatically controlled high pressure rail system altogether, and it carries out the sealed detection of back pressure formula to the system inside through pouring into diesel oil into, the reaction rate is slow, degree of automation is low, more because pour into diesel oil into and need carry out secondary filter, further slow down response speed, and make this leakproofness detection device use cost height.
Therefore, it is necessary to design a device for detecting the tightness of an electrically controlled high-pressure common rail system, which has a simple structure, is convenient to operate, has a high response speed, and can simultaneously detect a plurality of systems and independently detect the tightness of a plurality of connecting ports of each system.
SUMMERY OF THE UTILITY MODEL
In order to overcome current automatically controlled high pressure and rail system leakproofness detection device's problem, the utility model provides an automatically controlled high pressure rail system leakproofness detection device, the pressure sensor of accessible system access department obtains the pressure differential value and carries out the leakproofness to the automatically controlled high pressure rail system of multiunit difference simultaneously and detects to junction between each subassembly of automatically controlled high pressure rail system is provided with sealed determine module respectively, detects its kneck sealed condition alone.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides an automatically controlled high pressure common rail system leakproofness detection device, including high-pressure gas source subassembly, with steady voltage pipeline, the oil pump subassembly that high-pressure gas source subassembly is connected, with the filter line that oil pump subassembly is connected, respectively with the hybrid tube way that steady voltage pipeline and filter line connect simultaneously, peg graft respectively in a plurality of connecting tubes of hybrid tube way tail end, respectively with a plurality of automatically controlled high pressure common rail system that the connecting tube connects, all be provided with pressure sensor on hybrid tube way and the connecting tube way, it is a plurality of automatically controlled high pressure common rail system's kneck all is provided with sealed detection subassembly for detect the leakproofness of each pipeline interface of automatically controlled high pressure common rail system.
Further, the tail end of the pressure stabilizing pipeline and the tail end of the filtering pipeline are connected with the mixing pipeline through a three-way pipe, a first branch pipe is arranged on the mixing pipeline, and a first pressure sensor is arranged in the first branch pipe; and the tail end of the mixing pipeline is provided with a plurality of second branch pipes connected with the electric control high-pressure common rail system.
Furthermore, a plurality of second branch pipes all pass through assorted interface module and a plurality of connecting tube connects, interface module is sealed plug-in interface, its include with the second branch pipe connection public head, with female seat that connecting tube connects.
Furthermore, a plurality of third branch pipes are arranged on the connecting pipelines, and a plurality of second pressure sensors are arranged in the third branch pipes.
Furthermore, the electronic control high-pressure common rail system comprises a common rail pipeline connected to the tail end of the connecting pipeline, a plurality of shunting ports arranged below the common rail pipeline, a drainage pipeline with one end connected with the shunting ports, and an oil injector connected with the other end of the drainage pipeline, wherein sealing detection assemblies are arranged at the joint of the connecting pipeline and the common rail pipeline, the joint of the shunting ports and the drainage pipeline, and the joint of the drainage pipeline and the oil injector.
Furthermore, the sealing detection assembly comprises a sealing pipeline which is connected with the joint in a matching mode, openings at two ends of the sealing pipeline are respectively connected with the outer sides of the upper portion and the lower portion of the joint in a matching mode, the caliber of the middle portion of the sealing pipeline is larger than that of the outer side face of the joint, a cavity is formed between the upper portion and the lower portion of the joint and is provided with an annular groove hole, an elastic sealing ring is connected to the annular groove hole in a matching mode, the cavity is sealed, a through hole is formed in the upper portion of the cavity, and a pressure gauge is connected to the inner portion of the through hole in a sealing and inserting mode.
Furthermore, a first electromagnetic valve, a pneumatic duplex piece and a second electromagnetic valve are sequentially arranged on the pressure stabilizing pipeline from the air inlet connected with the high-pressure air source assembly.
Furthermore, a gear pump and a third electromagnetic valve are sequentially arranged on the filtering pipeline from an oil inlet connected with the oil pump assembly.
Furthermore, the high-pressure air source assembly is internally provided with an air pressure control module, so that the pressure value of the high-pressure air flow can be changed.
The control assembly comprises a microprocessor and an indicating unit, a timing unit is arranged in the microprocessor, the signal input end of the microprocessor is respectively connected to the first pressure sensor, the second pressure sensor and the pressure gauge, and the signal output end of the microprocessor is connected to the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the gear pump and the indicating unit.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a seal tightness detection device of an electric control high pressure common rail system, which detects the air pressure difference in the channel by arranging pressure sensors on a mixing pipeline and a connecting pipeline, thereby judging whether the seal tightness of each detected electric control high pressure common rail system is good or bad; meanwhile, an oil inlet pipeline is connected to the mixing pipeline of the device, so that the internal air volume of the electric control high-pressure common rail system to be detected is reduced, and the response speed of the detection device is improved.
2. The utility model discloses an automatically controlled high pressure common rail system leakproofness detection device, through setting up independent high-pressure gas source subassembly and oil pump subassembly to use pneumatic two-way piece to the high-pressure gas steady voltage, got rid of the complicated structure of traditional multistage filtration, multistage pump body cooperation oil tank, optimized the detection structure, need not the installation and dismantlement; meanwhile, gas is selected as a tightness detection medium, so that the structure is simple, the cost is low, and the operation is convenient.
3. The utility model discloses an automatically controlled high pressure common rail system leakproofness detection device sets up a plurality of lateral conduits through the tail end at the hybrid piping, can be connected to different automatically controlled high pressure common rail system to can cooperate through the sealed grafting subassembly of difference and peg graft, convenient to detach is with trading different systems, has improved detectable system diversity of device and convenience.
4. The utility model discloses an automatically controlled high pressure is rail system leakproofness detection device altogether is provided with sealed determine module through each junction at the automatically controlled high pressure rail of difference, can carry out the leakproofness simultaneously to the connector of difference and detect, reads the pressure gauge on it alright judge that this leakproofness is good bad.
Drawings
FIG. 1 is a schematic view of an axial measurement structure of the present invention;
FIG. 2 is an enlarged view of a portion of area A of FIG. 1;
fig. 3 is a schematic top view of the present invention;
fig. 4 is a schematic view of the axial structure of the seal detection assembly of the present invention;
fig. 5 is a schematic side view of the seal detection assembly of the present invention;
FIG. 6 is a cross-sectional view taken along direction B in FIG. 5;
fig. 7 is a schematic diagram of the connection of the control unit of the present invention;
the parts in the drawings are numbered as follows: 1. a high pressure gas source assembly; 2. an oil pump assembly; 3. a pressure stabilizing pipeline; 31. a first solenoid valve; 32. a pneumatic duplex piece; 33. a second solenoid valve; 4. a filtration pipeline; 41. a gear pump; 42. a third electromagnetic valve; 5. a three-way pipe; 6. a mixing duct; 61. a first pressure sensor; 62. a male head; 7. a drainage conduit; 8. connecting a pipeline; 81. a second pressure sensor; 82. a female seat; 9. a common rail conduit; 10. a seal detection assembly; 101. sealing the pipeline; 102. a pressure gauge; 103. an elastic sealing ring; 111. a microprocessor; 112. a timing unit; 113. and an indication unit.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, a device for detecting the sealing performance of an electronic control high-pressure common rail system comprises a high-pressure air source component 1, a pressure stabilizing pipeline 3 connected with the high-pressure air source component 1, an oil pump component 2, a filtering pipeline 4 connected with the oil pump component 2, a mixing pipeline 6 respectively connected with the pressure stabilizing pipeline 3 and the filtering pipeline 4 at the same time, a plurality of connecting pipelines 8 respectively inserted at the tail end of the mixing pipeline 6, and a plurality of electronic control high-pressure common rail systems respectively connected with the connecting pipelines 8, wherein the high-pressure air source component 1 inputs pressure stabilizing air flow to the electronic control high-pressure common rail systems through the pressure stabilizing pipeline 3, the oil pump component 2 inputs diesel oil to the electronic control high-pressure common rail systems through the filtering pipeline 4 to reduce the air volume in the pipelines and accelerate the response speed of detection, and pressure sensors are respectively arranged on the mixing pipeline 6 and the connecting pipelines 8, accessible pressure sensor detects everywhere pressure value and judges through the differential pressure method that the leakproofness is good bad, and a plurality of the kneck of automatically controlled high pressure common rail system all is provided with sealed detection subassembly 10 for detect the leakproofness of each pipeline interface of automatically controlled high pressure common rail system, the better sealed condition of confirmation of being convenient for, in time change maintain corresponding subassembly.
As shown in fig. 3, in this embodiment, the tail end of the pressure stabilizing pipe 3 and the tail end of the filtering pipe 4 are connected to the mixing pipe 6 through a three-way pipe 5, a first branch pipe is arranged on the mixing pipe 6, a first pressure sensor 61 is arranged in the first branch pipe, and the first pressure sensor 61 reads the pressure value at this position; the tail end of the mixing pipeline 6 is provided with a plurality of second branch pipes connected with the electric control high-pressure common rail system, and the sealing detection can be simultaneously carried out on a plurality of electric control high-pressure common rail systems.
As shown in fig. 2, in this embodiment, it is a plurality of the second branch pipe all through assorted interface module and a plurality of connecting tube 8 connects, interface module can follow according to actual demand and trade, and easy dismounting has increased detection device's convenience, interface module is sealed plug-in interface, its include with second branch union coupling's public head 62, with female seat 82 that connecting tube 8 is connected, the second branch pipe with connecting tube 8 is through the public head 62 and the female seat 82 sealing connection of cooperation grafting.
In this embodiment, a plurality of the connecting pipe 8 is provided with a third branch pipe, and a plurality of the third branch pipe is internally provided with a second pressure sensor 81, and the second pressure sensor 81 is used for reading the pressure value in the connecting pipe 8.
In this embodiment, the electronic control high-pressure common rail system includes a common rail pipe 9 connected to the tail end of the connecting pipe 8, a plurality of branch ports arranged below the common rail pipe 9, a drainage pipe 7 having one end connected to the branch ports, and an oil injector connected to the other end of the drainage pipe 7, wherein sealing detection assemblies 10 are arranged at the joints of the connecting pipe 8 and the common rail pipe 9, the joints of the branch ports and the drainage pipe 7, and the joints of the drainage pipe 7 and the oil injector, and the sealing detection assemblies 10 are connected to different joints in the system in a matching manner to detect the sealing performance of the interfaces.
As shown in fig. 4 to 6, in this embodiment, the sealing detection assembly 10 includes a sealing pipe 101 connected to the connection portion in a matching manner, the sealing pipe 101 covers the joint portion of the connection portion with an upper connection member and a lower connection member, openings at two ends of the sealing pipe 101 are respectively connected to outer sides of the upper portion and the lower portion of the connection portion in a matching manner, and a caliber of a middle portion of the sealing pipe is larger than a caliber of an outer side surface of the connection portion, a cavity is formed between the upper portion and the lower portion, the cavity can accommodate gas leaking from the connection portion, whether leakage occurs or not is determined according to a magnitude of a pressure value in the cavity, annular slots are respectively formed at two ends of the cavity, an elastic sealing ring 103 is connected to the annular slots in a matching manner, the elastic sealing ring 103 is limited along an axial direction thereof, and has elasticity, and can expand to further elastically seal the connection portion, so as to seal the cavity, the cavity is provided with a through hole above, the pressure gauge 102 is inserted in the through hole in a sealing mode, an elastic material is arranged outside a plug of the pressure gauge 102, sealing can be formed after the elastic material is inserted into the through hole, measuring accuracy is guaranteed, and whether gas leakage exists or not at the position is judged by reading the numerical value of the pressure gauge 102.
As shown in fig. 7, in this embodiment, a first electromagnetic valve 31, a pneumatic two-way piece 32, and a second electromagnetic valve 33 are sequentially disposed on the pressure-stabilizing pipe 3 from an air inlet connected to the high-pressure air source assembly 1, the pneumatic two-way piece 32 is a pneumatic element composed of an air filter and a pressure reducing valve, and realizes pressure stabilization adjustment of air pressure while realizing filtration and purification of the inflow air, and the first electromagnetic valve 31 and the second electromagnetic valve 33 play a role in regulating and controlling the air flow inside the pipe.
In this embodiment, a gear pump 41 and a third electromagnetic valve 42 are sequentially disposed on the filtering pipeline 4 from an oil inlet connected to the oil pump assembly 2, and the gear pump 41 pressurizes and discharges diesel oil flowing out of the oil pump assembly 2.
In this embodiment, the built-in atmospheric pressure control module of high-pressure air supply subassembly 1 can change the pressure value size of high-pressure draught, constantly adjusts the pressure value size of input air current, and observation system's leakproofness is good bad for testing result is safe and reliable more.
In this embodiment, the control device further comprises a control component, the control component comprises a microprocessor 111 and an indication unit 113, the microprocessor 111 is internally provided with a timing unit 112, the signal input end of the microprocessor 111 is respectively connected to the first pressure sensor 61, the second pressure sensor 81 and the pressure gauge 102, and the signal output end of the microprocessor is connected to the first electromagnetic valve 31, the second electromagnetic valve 33, the third electromagnetic valve 42, the gear pump 41 and the indication unit 113, and the control component makes a judgment according to the signal transmitted by the pressure sensors and feeds back the judgment to each electromagnetic valve, the gear pump 41 and the like to control the working state of the control component.
By the mode, when the detection device is started, the microprocessor controls the third electromagnetic valve and the gear pump to work, so that the oil pump assembly injects diesel oil into the mixing pipeline, and after the timing unit times the preset time, the third electromagnetic valve and the gear pump are closed; then the microprocessor controls the first electromagnetic valve and the second electromagnetic valve to work, and the first electromagnetic valve and the second electromagnetic valve are closed after the timing unit times to a preset time; after the timing unit times to a preset time, the first pressure sensor and the second pressure sensor respectively input detected data values to the microprocessor, the microprocessor calculates pressure drop difference values in each system, and if the pressure drop difference values are higher than the preset values, the indication unit is controlled to give an alarm; after the timing unit times the preset time, each pressure gauge inputs the detected data value to the microprocessor, and the microprocessor judges whether leakage occurs at the corresponding connection part according to each data value.
The above description is only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings of the utility model, or the direct or indirect application in other related technical fields, are included in the patent protection scope of the utility model.
Claims (10)
1. The device for detecting the sealing performance of the electric control high-pressure common rail system is characterized by comprising a high-pressure air source component (1), a pressure stabilizing pipeline (3) connected with the high-pressure air source component (1), an oil pump component (2), a filtering pipeline (4) connected with the oil pump component (2), a mixing pipeline (6) respectively connected with the pressure stabilizing pipeline (3) and the filtering pipeline (4) at the same time, a plurality of connecting pipelines (8) respectively inserted at the tail end of the mixing pipeline (6), and a plurality of electric control high-pressure common rail systems respectively connected with the connecting pipelines (8), the device is characterized in that pressure sensors are arranged on the mixing pipeline (6) and the connecting pipeline (8), and a plurality of sealing detection assemblies (10) are arranged at the joints of the electric control high-pressure common rail system and used for detecting the sealing property of each pipeline joint of the electric control high-pressure common rail system.
2. The device for detecting the tightness of the electrically controlled high pressure common rail system according to claim 1, wherein the tail end of the pressure stabilizing pipe (3) and the tail end of the filtering pipe (4) are connected with the mixing pipe (6) through a tee pipe (5), the mixing pipe (6) is provided with a first branch pipe, and a first pressure sensor (61) is arranged in the first branch pipe; and the tail end of the mixing pipeline (6) is provided with a plurality of second branch pipes connected with the electric control high-pressure common rail system.
3. The device for detecting the tightness of the electrically controlled high-pressure common rail system according to claim 2, wherein the second branch pipes are connected with the connecting pipes (8) through matched interface components, each interface component is a sealed plug-in interface and comprises a male head (62) connected with the second branch pipe and a female seat (82) connected with the connecting pipe (8).
4. The device for detecting the tightness of the electrically controlled high pressure common rail system according to claim 3, wherein a plurality of the connecting pipes (8) are provided with third branch pipes, and a plurality of the third branch pipes are provided with second pressure sensors (81).
5. The device for detecting the sealing performance of the electric control high-pressure common rail system according to claim 4, wherein the electric control high-pressure common rail system comprises a common rail pipeline (9) connected to the tail end of the connecting pipeline (8), a plurality of branch ports arranged below the common rail pipeline (9), a drainage pipeline (7) with one end connected with the branch ports, and an oil injector connected with the other end of the drainage pipeline (7), and sealing detection assemblies (10) are arranged at the joint of the connecting pipeline (8) and the common rail pipeline (9), the joint of the branch ports and the drainage pipeline (7), and the joint of the drainage pipeline (7) and the oil injector.
6. The device for detecting the sealing performance of the electric control high-pressure common rail system according to claim 5, wherein the sealing detection assembly (10) comprises a sealing pipeline (101) connected to the joint in a matching manner, openings at two ends of the sealing pipeline (101) are respectively connected with the outer sides of the upper part and the lower part of the joint in a matching manner, the caliber of the middle part of the sealing pipeline is larger than the caliber of the outer side surface of the joint, a cavity is formed between the sealing pipeline and the outer side surface of the joint, annular slotted holes are respectively formed at two ends of the cavity, an elastic sealing ring (103) is connected to the annular slotted holes in a matching manner to seal the cavity, a through hole is formed above the cavity, and a pressure gauge (102) is inserted into the through hole in a sealing manner.
7. The device for detecting the tightness of the electronic control high-pressure common rail system according to claim 1, wherein a first electromagnetic valve (31), a pneumatic linkage (32) and a second electromagnetic valve (33) are arranged on the pressure stabilizing pipeline (3) in sequence from an air inlet connected with the high-pressure air source assembly (1).
8. The device for detecting the tightness of the electric control high-pressure common rail system according to claim 1, wherein a gear pump (41) and a third electromagnetic valve (42) are arranged on the filter pipeline (4) in sequence from an oil inlet connected with the oil pump assembly (2).
9. The device for detecting the tightness of the electronic control high-pressure common rail system according to claim 1, wherein a pneumatic control module is arranged in the high-pressure air source assembly (1) to change the magnitude of the pressure value of the high-pressure air flow.
10. The device for detecting the tightness of the electric control high-pressure common rail system according to claim 1, further comprising a control assembly, wherein the control assembly comprises a microprocessor (111) and an indication unit (113), the microprocessor (111) is internally provided with a timing unit (112), signal input ends of the microprocessor (111) are respectively connected to the first pressure sensor (61), the second pressure sensor (81) and the pressure gauge (102), and signal output ends of the microprocessor are connected to the first solenoid valve (31), the second solenoid valve (33), the third solenoid valve (42), the gear pump (41) and the indication unit (113).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120260428.5U CN214660578U (en) | 2021-01-29 | 2021-01-29 | Electric control high-pressure common rail system tightness detection device |
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| CN202120260428.5U CN214660578U (en) | 2021-01-29 | 2021-01-29 | Electric control high-pressure common rail system tightness detection device |
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| CN214660578U true CN214660578U (en) | 2021-11-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709655A (en) * | 2021-01-29 | 2021-04-27 | 湖北三宁化工股份有限公司 | Electric control high-pressure common rail system tightness detection device |
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2021
- 2021-01-29 CN CN202120260428.5U patent/CN214660578U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709655A (en) * | 2021-01-29 | 2021-04-27 | 湖北三宁化工股份有限公司 | Electric control high-pressure common rail system tightness detection device |
| CN112709655B (en) * | 2021-01-29 | 2023-09-22 | 枝江市宁港物流有限公司 | Tightness detection device for electric control high-pressure common rail system |
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