CN213063726U - Pipeline arrangement structure of cantilever type differential pressure sensor assembly - Google Patents
Pipeline arrangement structure of cantilever type differential pressure sensor assembly Download PDFInfo
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- CN213063726U CN213063726U CN202022265858.4U CN202022265858U CN213063726U CN 213063726 U CN213063726 U CN 213063726U CN 202022265858 U CN202022265858 U CN 202022265858U CN 213063726 U CN213063726 U CN 213063726U
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- differential pressure
- pressure difference
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- hard pipe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
A cantilever type differential pressure sensor assembly pipeline arrangement structure comprises a differential pressure short hose, a differential pressure long hose, a cantilever type bracket with a hard pipe assembly, a differential pressure hard pipe, an omega-shaped pre-tightening clamp and a differential pressure sensor, wherein the outer wall of a pipeline of the differential pressure sensor and the outer wall of the upper end of a stainless steel metal short hard pipe of the cantilever type bracket with the hard pipe assembly are respectively in interference fit with the inner walls of two ends of the differential pressure short hose, and the two ends of the differential pressure short hose are provided with the omega-shaped pre-tightening clamp for fastening all parts; the outer wall of the lower end of the stainless steel metal short hard pipe and the outer wall of the upper end of the pressure difference hard pipe of the cantilever type support with the hard pipe assembly are respectively in interference fit with the inner walls of the two ends of the pressure difference long soft pipe, and omega-shaped pre-tightening clamps for fastening all the parts are arranged at the two ends of the pressure difference long soft pipe; the utility model discloses can reduce because of the wrong trouble of reporting that condensation ponding leads to on the differential pressure sensor foil gage, also avoid the damage risk that differential pressure sensor caused to the inner structure of sensor itself because of the stress that uses the bolt to screw up the production simultaneously.
Description
Technical Field
The utility model discloses automobile exhaust system differential pressure sensor assembly structural design technical field especially relates to a cantilever type differential pressure sensor assembly pipeline arrangement structure.
Background
The differential pressure sensor and the pipeline arrangement are main pressure difference sensing equipment for detecting a catalytic oxidation Device (DOC) and a particle trap (DPF) of a diesel vehicle exhaust system and are used for detecting the front and rear pressure difference values of corresponding exhaust pipes, so that the conversion efficiency and the content of particle accumulation are judged, and the differential pressure sensor system belongs to a regulation and environment-friendly part for monitoring emission by an environment protection department and has an important monitoring effect on the guarantee of national emission standards. Once the pressure difference sensor is failed or disturbed, the related data of the exhaust system cannot be normally monitored, so that the exhaust emission problems such as excessive emission and the like are caused.
The original emission of the tail gas of the engine contains about 10-20% of high-temperature water vapor, the high-temperature water vapor enters a differential pressure pipeline in an exhaust pipeline, the differential pressure pipeline connected with the exhaust pipe is generally a stainless steel metal pipeline, the high-temperature water vapor enters the differential pressure metal pipe with low temperature and is rapidly condensed into water beads which are attached to the pipe wall of the differential pressure pipeline, the exhaust pressure exists in the exhaust pipeline, and the pressure also exists in the differential pressure pipeline, so the water beads are finally condensed at the top end of the differential pressure pipeline, the water beads accumulate more and more along with the time, when the gravity of the water is larger than the limit value of the exhaust pressure, the water beads flow down to the exhaust pipe, the water content in the differential pressure pipeline is kept at a balance value, when the vehicle is flameout, part of the water flows down to enter the exhaust pipe without the effect of the exhaust pressure, and part of the condensed water, therefore, negative pressure influence is generated on a pressure sensing piece of the pressure difference sensor at the top of the pipeline, so that signals detected by the pressure difference sensor are inaccurate, signals processed by a vehicle control module (ECU) are wrong, a fault lamp is turned on, the power is limited, the vehicle cannot be normally used, and the problems are particularly obvious in rainy seasons.
Therefore, for a differential pressure sensor assembly, the influence of condensed water on a pressure sensing piece of the differential pressure sensor assembly is eliminated, the Differential Pressure Sensor (DPS) is designed to be provided with a mounting hole under the common condition, the conventional arrangement is that the Differential Pressure Sensor (DPS) is directly fixed on a vehicle body or a certain support by using a bolt, so that the angle and the arrangement of the Differential Pressure Sensor (DPS) are fixed, the condensed water easily accumulated in front and back pressure pipes of the Differential Pressure Sensor (DPS) cannot be discharged in time, and the signal interference is caused to report the signal unreliable fault of the differential pressure sensor, so that a technology for solving the signal interference of the condensed water on the differential pressure sensor is found, and the technology is particularly important for a diesel vehicle host.
Based on the above consideration, the utility model designs a cantilever type differential pressure sensor assembly pipeline arrangement structure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a cantilever type differential pressure sensor assembly pipeline arrangement structure, get rid of the interference of differential pressure pipeline comdenstion water to the differential pressure sensor signal to solve differential pressure sensor because of the comdenstion water disturbs the discharge failure who leads to the signal.
In order to realize the utility model discloses a purpose, the utility model discloses a technical scheme do:
the utility model discloses a cantilever type differential pressure sensor assembly pipeline arrangement structure, which comprises a differential pressure short hose, a differential pressure long hose, a cantilever type bracket belt hard pipe assembly, a differential pressure hard pipe, an omega type pre-tightening clamp and a differential pressure sensor, wherein the outer wall of the pipeline of the differential pressure sensor and the outer wall of the upper end of the stainless steel metal short hard pipe of the cantilever type bracket belt hard pipe assembly are respectively in interference assembly with the inner walls of the two ends of the differential pressure short hose, and the two ends of the differential pressure short hose are provided with the omega type pre-tightening clamp for fastening each part; the outer wall of the lower end of the stainless steel metal short hard pipe and the outer wall of the upper end of the pressure difference hard pipe of the cantilever type support with the hard pipe assembly are respectively in interference fit with the inner walls of the two ends of the pressure difference long soft pipe, and omega-shaped pre-tightening clamps for fastening all the parts are arranged at the two ends of the pressure difference long soft pipe; the lower end of the pressure difference hard pipe is connected with the exhaust pipe through threads.
The pressure difference short hose and the pressure difference long hose are transition hoses which are made of rubber materials through a vulcanization process and have a connection effect.
The cantilever type support hard tube assembly comprises a stainless steel metal plate and a stainless steel metal short hard tube, wherein a bolt mounting hole is formed in the stainless steel metal plate, furnace welding is adopted between the stainless steel metal short hard tube and the stainless steel metal plate, and two sections of the stainless steel metal short hard tubes welded on the stainless steel metal plate are parallel to each other.
The pressure difference hard pipe is a stainless steel metal straight pipe and is bent according to the trend requirement through a pipe bending machine.
The omega-shaped pre-tightening hoop is a standard part.
The utility model has the advantages that:
the utility model discloses no longer directly pass through the bolt fastening with differential pressure sensor on automobile body or support, but be connected differential pressure sensor front and back pin and the short hose of pressure differential, make differential pressure sensor's degree of freedom increase, make differential pressure sensor along with the soft shake of whole car, thereby can make the inside comdenstion water of differential pressure sensor in time flow back to the blast pipe along with the shake of vehicle, reduce because of the wrong trouble of reporting that condensation ponding adheres to and leads to on the differential pressure sensor foil gage, the damage risk that differential pressure sensor caused to the inner structure of sensor itself because of the stress that uses the bolt tightening to produce has also been avoided simultaneously.
Drawings
Fig. 1 is a perspective view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a cross-sectional view B-B of the connection between the hose and the hard tube according to the present invention;
fig. 4 is a cross-sectional view of the arm type bracket with a hard tube assembly a-a of the present invention.
In the figure, 1, a pressure difference short hose, 2, a pressure difference long hose, 3, a cantilever type bracket with a hard pipe assembly, 301, a stainless steel sheet metal, 302, a stainless steel metal short hard pipe, 4, a pressure difference hard pipe, 5, an omega type pre-tightening clamp and 6, a pressure difference sensor.
Detailed Description
The invention will be further described with reference to the following figures and examples:
see fig. 1-4.
The utility model discloses a cantilever type differential pressure sensor assembly pipeline arrangement structure, including pressure difference short hose 1, pressure difference long hose 2, cantilever type support area hard tube assembly 3, pressure difference hard tube 4, omega type pretension clamp 5 and differential pressure sensor 6, the pipeline outer wall of differential pressure sensor 6 and the stainless steel metal short hard tube 302 upper end outer wall of cantilever type support area hard tube assembly 3 respectively with pressure difference short hose 1 both ends inner wall interference fit, and pressure difference short hose 1 both ends are equipped with omega type pretension clamp 5 that is used for fastening each part; the outer wall of the lower end of the stainless steel metal short hard pipe 302 of the cantilever type support with the hard pipe assembly 3 and the outer wall of the upper end of the pressure difference hard pipe 4 are respectively in interference fit with the inner walls of the two ends of the pressure difference long hose 2, and omega-shaped pre-tightening clamps 5 for fastening all the parts are arranged at the two ends of the pressure difference long hose 2; the lower end of the pressure difference hard pipe 4 is connected with the exhaust pipe through threads.
The pressure difference short hose 1 and the pressure difference long hose 2 are transition hoses which are made of rubber materials through a vulcanization process and have a connection effect.
The cantilever type support belt hard tube assembly 3 comprises a stainless steel sheet metal 301 and a stainless steel metal short hard tube 302, wherein a bolt mounting hole is formed in the stainless steel sheet metal 301, furnace welding is adopted between the stainless steel metal short hard tube 302 and the stainless steel sheet metal 301, the two sections of the stainless steel metal short hard tubes 302 welded on the stainless steel sheet metal 301 are parallel to each other, and the orientation of the stainless steel sheet metal 301 can be properly selected according to the structure of a vehicle body.
Pressure difference hard tube 4 is stainless steel metal straight tube, buckles according to the trend demand through the bending machine, the utility model discloses do not restrict the orientation of hard tube, can suitably select according to the automobile body structure.
The omega-shaped pre-tightening clamp 5 is a national standard part (Q673B 14), the diameter of the hole is enlarged after the pipe is extruded inwards by a tool or fingers, the pipe is sleeved at the joint and then released, the connection between the hose and the hard pipe can be clamped, the clamping positions of all 8 omega-shaped pre-tightening clamps 5 are the same in size of the inner diameter and the outer diameter of the soft pipe and the hard pipe.
The differential pressure sensor and the exhaust pipe are different in structure and parameters due to different vehicle types, brands, purposes and the like.
The utility model discloses a cantilever type differential pressure sensor assembly pipeline arrangement structure, a serial communication port, including following step:
firstly, designing a cantilever metal plate structure according to the spatial arrangement position of the existing differential pressure sensor and the fixed position of a cantilever metal plate bracket, selecting the length and the shape of a welding hard tube according to the spatial arrangement position, fixing the positions of the hard tube and the cantilever metal plate, and welding by adopting a furnace welding mode, wherein the welding material is a copper pick; completing the manufacture of the cantilever type bracket with hard tube assembly 3 after the welding process is finished;
secondly, designing the length of the hose according to the arrangement requirement, and finishing manufacturing the pressure difference short hose 1 and the pressure difference long hose 2 by adopting a vulcanization process; assembling the inner wall of the lower end of the pressure difference short hose 1 and the outer wall of the upper end of the hard pipe of the cantilever type bracket hard pipe assembly 3 in an interference manner; the inner wall of the upper end of the pressure difference long hose 2 and the outer wall of the lower end of the hard pipe of the cantilever type support band hard pipe assembly 3 are in interference fit;
thirdly, the stainless steel metal straight pipe is bent according to the trend requirement through a pipe bending machine, the utility model does not limit the shape orientation of the metal hard pipe, the port connected with the exhaust pipe is connected by screw thread to manufacture a pressure difference hard pipe 4, and the upper end of the pressure difference hard pipe 4 and the lower end of the pressure difference long hose 2 are assembled in an interference fit way;
and fourthly, clamping the eight omega-shaped pre-tightening clamps 5 at eight connecting positions respectively to form a cantilever type differential pressure sensor pipeline assembly structure.
The above mentioned is only the embodiment of the present invention, not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings or the direct or indirect application in the related technical field are included in the patent protection scope of the present invention.
Claims (5)
1. A cantilever type differential pressure sensor assembly pipeline arrangement structure is characterized in that: the pressure difference type cantilever support hard pipe assembly comprises a pressure difference short hose (1), a pressure difference long hose (2), a cantilever type support hard pipe assembly (3), a pressure difference hard pipe (4), an omega-shaped pre-tightening clamp (5) and a pressure difference sensor (6), wherein the outer wall of a pipeline of the pressure difference sensor (6) and the outer wall of the upper end of a stainless steel metal short hard pipe (302) of the cantilever type support hard pipe assembly (3) are respectively in interference fit with the inner walls of the two ends of the pressure difference short hose (1), and the omega-shaped pre-tightening clamp (5) for fastening all parts are arranged at the two ends of the pressure difference short hose (; the outer wall of the lower end of a stainless steel metal short hard pipe (302) of the cantilever type support with the hard pipe assembly (3) and the outer wall of the upper end of the differential pressure hard pipe (4) are respectively in interference fit with the inner walls of the two ends of the differential pressure long hose (2), and omega-shaped pre-tightening clamps (5) for fastening all parts are arranged at the two ends of the differential pressure long hose (2); the lower end of the pressure difference hard pipe (4) is connected with the exhaust pipe through threads.
2. The cantilevered differential pressure sensor assembly piping arrangement of claim 1, wherein: the pressure difference short hose (1) and the pressure difference long hose (2) are transition hoses which are made of rubber materials through a vulcanization process and have a connection effect.
3. The cantilevered differential pressure sensor assembly piping arrangement of claim 1, wherein: cantilever type support area hard tube assembly (3) include stainless steel panel beating (301) and stainless steel metal short hard tube (302), be equipped with the bolt mounting hole on stainless steel panel beating (301), adopt the stove to weld between stainless steel metal short hard tube (302) and stainless steel panel beating (301), and weld two sections stainless steel metal short hard tubes (302) on stainless steel panel beating (301) and keep parallel each other.
4. The cantilevered differential pressure sensor assembly piping arrangement of claim 1, wherein: the pressure difference hard pipe (4) is a stainless steel metal straight pipe and is bent by a pipe bending machine according to the trend requirement.
5. The cantilevered differential pressure sensor assembly piping arrangement of claim 1, wherein: the omega-shaped pre-tightening clamp (5) is a standard part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022265858.4U CN213063726U (en) | 2020-10-13 | 2020-10-13 | Pipeline arrangement structure of cantilever type differential pressure sensor assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022265858.4U CN213063726U (en) | 2020-10-13 | 2020-10-13 | Pipeline arrangement structure of cantilever type differential pressure sensor assembly |
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| Publication Number | Publication Date |
|---|---|
| CN213063726U true CN213063726U (en) | 2021-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022265858.4U Active CN213063726U (en) | 2020-10-13 | 2020-10-13 | Pipeline arrangement structure of cantilever type differential pressure sensor assembly |
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| Country | Link |
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| CN (1) | CN213063726U (en) |
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- 2020-10-13 CN CN202022265858.4U patent/CN213063726U/en active Active
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