CN114837770A - Crankcase ventilation pipe and monitoring device - Google Patents
Crankcase ventilation pipe and monitoring device Download PDFInfo
- Publication number
- CN114837770A CN114837770A CN202210645609.9A CN202210645609A CN114837770A CN 114837770 A CN114837770 A CN 114837770A CN 202210645609 A CN202210645609 A CN 202210645609A CN 114837770 A CN114837770 A CN 114837770A
- Authority
- CN
- China
- Prior art keywords
- crankcase ventilation
- pipeline
- joint
- layer pipeline
- crankcase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009423 ventilation Methods 0.000 title claims abstract description 94
- 238000012806 monitoring device Methods 0.000 title claims abstract description 9
- 239000002131 composite material Substances 0.000 claims description 26
- 210000002445 nipple Anatomy 0.000 claims description 9
- 238000009434 installation Methods 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 26
- 238000007789 sealing Methods 0.000 description 9
- 238000012544 monitoring process Methods 0.000 description 7
- 239000003921 oil Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
- F02B77/083—Safety, indicating, or supervising devices relating to maintenance, e.g. diagnostic device
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention provides a crankcase ventilation pipe and a monitoring device, in particular to the field of automobile engines, comprising: double-deck air pipe, combined type connect and pressure sensor, double-deck air pipe includes outer pipeline and inlayer pipeline, the inlayer pipeline is located in the outer pipeline, the combined type connects the installation double-deck air pipe's both ends, pressure sensor sets up in the outer pipeline, pressure sensor is connected with the controller electricity of installing in the motor vehicle. The invention can monitor faults of neglected loading, disconnection, damage and the like of the ventilation pipeline, the inner layer pipeline is used for ventilation of the crankcase, the outer layer pipeline is a monitored gas channel, when the ventilation pipeline of the crankcase breaks down, the gas pressure in the outer layer pipeline exceeds a set value, the unreasonable fault of the gas inlet pressure is reported by the controller, the ventilation system of the crankcase is checked, and the oil gas pollution is avoided.
Description
Technical Field
The invention relates to the field of automobile engines, in particular to a crankcase ventilation pipe and a monitoring device.
Background
When an engine works, high-pressure combustible mixed gas and burnt gas in a combustion chamber can enter a crankcase through a gap between a piston and a cylinder sleeve to a greater or lesser extent, blow-by gas can be generated, the components of the blow-by gas are unburned fuel gas, water vapor, waste gas and the like, the blow-by gas can cause the pressure in the crankcase to rise to damage the sealing of the crankcase, engine oil can be diluted, the service performance of the engine oil is reduced, and an oil way can be blocked after the water vapor is condensed, so that a crankcase ventilation system is designed.
In the national emission regulation of six, which was officially released in the end of 2016, a vehicle-mounted diagnostic system adds a monitoring requirement for an engine crankcase ventilation system, and if a crankcase ventilation system is used by a vehicle, a production enterprise should monitor the crankcase ventilation system to ensure the integrity of the system. Existing crankcase ventilation circuits are primarily used to balance the internal and external pressures of an engine crankcase system, but do not meet the requirements for monitoring the integrity of crankcase ventilation systems under national six regulations.
The existing automobile manufacturers mainly adopt a conductive tube or an air flow meter for diagnosis to monitor the crankcase ventilation system, and although the requirement of monitoring the disconnection fault of the crankcase ventilation pipeline can be met, the existing automobile manufacturers have the defects of high-frequency misdiagnosis and incapability of monitoring the damage of the pipeline.
Disclosure of Invention
The invention aims to provide a crankcase ventilation pipe and a monitoring device, which can monitor faults of neglected loading, disconnection, damage and the like of a crankcase ventilation pipeline and avoid oil gas pollution.
To meet the above technical objects and the related technical objects, the present invention provides a crankcase ventilation duct, which includes:
the double-layer ventilating duct comprises an outer-layer duct and an inner-layer duct, and the inner-layer duct is positioned in the outer-layer duct;
the two composite joints are respectively arranged at two ends of the double-layer ventilating duct, an outer-layer pipeline connecting port and an inner-layer pipeline connecting port are arranged on the composite joints, the inner-layer pipeline connecting port is connected with the inner-layer pipeline, the outer-layer pipeline connecting port is connected with the outer-layer pipeline, one composite joint is connected with an air outlet joint on a valve chamber cover of an engine, and the other composite joint is connected with an air inlet joint on an air inlet system;
the pressure sensor is arranged between the outer layer pipeline and the inner layer pipeline and is electrically connected with a controller installed in a motor vehicle.
In an example of the crankcase ventilation pipe, the composite joint comprises an outer joint and an inner joint, the inner joint is mounted in the outer joint, the outer pipe connecting port is arranged at one end of the outer joint, and the inner pipe connecting port is arranged at one end of the inner joint.
In an example of the crankcase ventilation duct according to the present invention, the outer joint is provided with an inner joint mounting hole, and the inner joint is mounted in the inner joint mounting hole.
In an example of the crankcase ventilation pipe, a plurality of buckles are arranged in the inner joint mounting hole, clamping grooves are formed in the outer side of the inner joint, and the buckles are matched with the clamping grooves.
In one example of the crankcase ventilation pipe, the number of the buckles is 3-5, and the buckles are evenly distributed in the inner joint installation hole.
In an example of the crankcase ventilation pipe, the buckle comprises a support arm and a chuck, one end of the support arm is connected with the inner joint mounting hole, the chuck is arranged at the other end of the support arm, and the chuck is matched with the clamping groove.
In an example of the crankcase ventilation pipe, the clamping groove is composed of two annular plates, the two annular plates are connected with the outer surface of the inner joint, and the distance between the two annular plates is equal to the length of the clamping head.
In an example of the crankcase ventilation pipe, the other end of the outer joint is provided with a quick-insertion interface.
In an example of the crankcase ventilation pipe, the quick-connection interface comprises a baffle ring, a baffle plate and a connecting plate, the baffle plate is arranged on the outer surface of the outer joint, one end of the connecting plate is connected with the baffle plate, the other end of the connecting plate is connected with the baffle ring, and a quick-connection clamping groove is formed in the connecting plate.
In an example of the crankcase ventilation pipe of the invention, a sealing device is arranged in the quick-insertion opening.
In one example of the crankcase ventilation duct of the present invention, the sealing device includes a first seal ring and a first mounting groove, the first mounting groove is provided on an outer surface of the outer joint, and the first seal ring is mounted in the first mounting groove.
In one example of the crankcase ventilation duct of the present invention, an end of the nipple is provided with a second seal ring and a second mounting groove, and the second seal ring is mounted in the second mounting groove.
In an example of the crankcase ventilation duct according to the invention, the inner joint and the outer joint are arranged coaxially.
In an example of the crankcase ventilation pipe, the outer layer pipeline connecting opening and the inner layer pipeline connecting opening are both provided with pipeline fixing structures.
In an example of the crankcase ventilation duct of the present invention, the outer duct and the inner duct are made of nylon or rubber.
The invention also provides a crankcase ventilation monitoring device which comprises a controller and the crankcase ventilation pipe, wherein the controller is installed in a motor vehicle, and the controller is electrically connected with the pressure sensor of the crankcase ventilation pipe.
The crankcase ventilation pipe and the monitoring device are used for forming a crankcase ventilation system and monitoring faults of neglected loading, disconnection, damage and the like of a ventilation pipeline, the combined joint can be used for quickly disassembling and assembling the ventilation pipeline, the double-layer ventilation pipeline can effectively save space, the inner layer pipeline is used for crankcase ventilation, the outer layer pipeline is a monitored gas channel, when the crankcase ventilation pipeline breaks down, the gas pressure in the outer layer pipeline exceeds a set value, an unreasonable fault of the gas inlet pressure is reported through a controller, the crankcase ventilation system is checked, and oil gas pollution is avoided.
Drawings
FIG. 1 is a schematic view of a crankcase ventilation duct according to the present invention;
FIG. 2 is a schematic view of the construction of the composite joint for crankcase ventilation tubing of the present invention;
FIG. 3 is a cross-sectional view of a composite joint for a crankcase ventilation manifold of the present invention;
FIG. 4 is a schematic view of the external joint of the crankcase ventilation duct of the present invention;
FIG. 5 is a schematic view of the construction of the nipple of the crankcase ventilation tube of the present invention;
FIG. 6 is a schematic view of the outer duct of the crankcase ventilation duct of the present invention;
FIG. 7 is a schematic view of the inner duct of the crankcase ventilation duct of the present invention.
Element number description:
100 double-layer ventilating duct
110 outer layer pipeline
120 inner layer pipeline
200 composite joint
210 external joint
211 outer layer pipeline connecting port
212 first seal ring
213 first mounting groove
220 inner joint
221 card slot
222 inner pipeline connecting port
223 second seal ring
224 second mounting groove
230 fastener
231 arm
232 chuck
240 quick-plugging port
241 baffle ring
242 baffle
243 connecting board
244 quick-connecting clamping groove
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. It is also to be understood that the terminology used in the examples is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the respective manufacturers.
When numerical ranges are given in the examples, it is understood that both endpoints of each of the numerical ranges and any value therebetween can be selected unless the invention otherwise indicated. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and the description of the present invention, and any methods, apparatuses, and materials similar or equivalent to those in the embodiments of the present invention may be used to practice the present invention.
Referring to fig. 1 to 3, fig. 6 and fig. 7, fig. 1 is a schematic structural diagram of a crankcase ventilation duct according to the present invention, fig. 2 is a schematic structural diagram of a composite joint of a crankcase ventilation duct according to the present invention, fig. 3 is a cross-sectional view of a composite joint of a crankcase ventilation duct according to the present invention, fig. 6 is a schematic structural diagram of an outer pipe of a crankcase ventilation duct according to the present invention, and fig. 7 is a schematic structural diagram of an inner pipe of a crankcase ventilation duct according to the present invention. The invention provides a crankcase ventilation pipe, comprising: the double-layer ventilation pipeline 100 comprises an outer layer pipeline 110 and an inner layer pipeline 120, wherein the inner layer pipeline 120 is positioned in the outer layer pipeline 110, a composite joint 200 and a pressure sensor (not shown). The two composite joints 200 are respectively installed at two ends of the double-layer ventilation pipeline 100, an outer layer pipeline connecting port 211 and an inner layer pipeline connecting port 222 are arranged on the composite joints 200, the inner layer pipeline connecting port 222 is connected with the inner layer pipeline 120, the outer layer pipeline connecting port 211 is connected with the outer layer pipeline 110, one of the composite joints 200 is connected with an air outlet joint on an engine valve chamber cover, and the other composite joint 200 is connected with an air inlet joint on an air inlet system. The pressure sensor is disposed between the outer pipe 110 and the inner pipe 120, and the pressure sensor is electrically connected to a controller installed in a motor vehicle.
One end of the crankcase ventilation pipe is connected with an air outlet joint on the cover of the engine valve chamber, and the other end of the crankcase ventilation pipe is connected with an air inlet joint on the air inlet system, so that a passage is formed. The composite joint 200 is connected with the outer layer pipeline 110 and the inner layer pipeline 120 respectively through the outer layer pipeline connecting port 211 and the inner layer pipeline connecting port 222, the inner layer pipeline 120 and the composite joint 200 form a crankcase ventilation pipeline, the outer layer pipeline 110 and the composite joint 200 form a monitored gas pipeline, the crankcase ventilation pipeline is connected with a crankcase, and the monitored gas pipeline is connected with an intake manifold. The pressure sensor is used to monitor the gas pressure between the outer pipe 110 and the inner pipe 120 and upload the data to the controller. When the gas pressure between the outer duct 110 and the inner duct 120 exceeds a predetermined upper and lower limit, indicating a crankcase ventilation circuit failure, the controller may report an inlet gas pressure failure and notify a check of the crankcase ventilation system.
According to the invention, the double-layer ventilation pipeline 100 and the composite joint 200 form an inner independent ventilation pipeline and an outer independent ventilation pipeline, faults such as missing installation, disconnection and damage of the crankcase ventilation pipeline are monitored by monitoring the change of the gas pressure in the outer layer pipeline 110, and oil gas pollution is avoided. The invention can effectively save the installation space, prolong the service life, reduce the failure rate of the crankcase ventilation system and avoid the problems of false alarm and the like.
Referring to fig. 2 to 5, fig. 4 is a schematic structural view of an external joint of a crankcase ventilation pipe according to the present invention, and fig. 5 is a schematic structural view of an internal joint of a crankcase ventilation pipe according to the present invention. In an example of the crankcase ventilation pipe according to the present invention, the composite joint 200 includes an outer joint 210 and an inner joint 220, the inner joint 220 is installed in the outer joint 210, the outer pipe connection port 211 is provided at one end of the outer joint 210, and the inner pipe connection port 222 is provided at one end of the inner joint 220. The outer joint 210 is connected with the outer pipe 110 to form a gas pipeline to be monitored, and gas enters the outer pipe 110 through a gap between the outer joint 210 and the inner joint 220 and is then discharged from the outer joint 210 at the other end. The nipple 220 is connected to the inner pipe 120 to form a crankcase ventilation line.
Referring to fig. 2 to 5, in an example of the crankcase ventilation duct of the present invention, the outer joint 210 is provided with an inner joint mounting hole, and the inner joint 220 is mounted in the inner joint mounting hole. A plurality of buckles 230 are arranged in the nipple mounting hole, a clamping groove 221 is arranged on the outer side of the nipple 220, and the buckles 230 are matched with the clamping groove 221. The number of the buckles 230 is 3-5, and the buckles 230 are evenly distributed on the inner surface of the inner joint mounting hole. The clip 230 includes a support arm 231 and a clip 232, wherein one end of the support arm 231 is connected to an inner wall of the inner joint mounting hole, the clip 232 is disposed at the other end of the support arm 231, and the clip 232 is engaged with the engaging groove 221. The engaging groove 221 is formed by two annular plates, the two annular plates are connected to the outer surface of the inner joint 220, and the distance between the two annular plates is equal to the length of the engaging head 232.
Referring to fig. 2 to 4, in an example of the crankcase ventilation duct of the present invention, the other end of the external joint 210 is provided with a quick-connect connector 240. The quick connector 240 comprises a baffle 241, a baffle 242 and a connecting plate 243, the baffle 242 is arranged on the outer surface of the outer joint 210, one end of the connecting plate 243 is connected with the baffle 242, the other end of the connecting plate 243 is connected with the baffle 241, and a quick connector slot 244 is arranged on the connecting plate 243. The quick-insertion interface 240 can perform quick insertion to complete quick installation of the composite connector 200, which can effectively improve the installation speed.
Referring to fig. 2-5, in an example of the crankcase ventilation duct of the present invention, a sealing device is disposed in the quick-connect port 240. The sealing device comprises a first sealing ring 212 and a first mounting groove 213, the first mounting groove 213 is arranged on the outer surface of the outer joint 210, and the first sealing ring 212 is mounted in the first mounting groove 213. The end of the nipple 220 is provided with a second sealing ring 223 and a second mounting groove 224, and the second sealing ring 224 is mounted in the second mounting groove 223. The inner joint 220 is coaxially disposed with the outer joint 210.
In an example of the crankcase ventilation pipe of the present invention, a pipe fixing structure is disposed at each of the outer layer pipe connection port 211 and the inner layer pipe connection port 222. The outer pipe 110 and the inner pipe 120 are made of nylon or rubber. The pipe fixing structure is used to fix the outer pipe 110 and the inner pipe 120, and the pipe fixing structure includes an anti-slip corrugated section or a clamp band. The double-layer ventilation duct 100 made of nylon has good high temperature resistance, low-temperature impact resistance, thermal stability and high pressure resistance, can be made of materials such as PA612, PA12 or PA6, and is assembled with the composite joint 200 by an interference press-fitting process. The double-layer ventilation duct 100 made of rubber has good high temperature resistance, negative pressure resistance and oil resistance, can be made of AEM, FKM or multilayer rubber tubes and other materials, and is assembled with the composite joint 200 by adopting a clamp plate and hoop process. The inner diameter and thickness dimensions of the outer pipe 110 and the inner pipe 120 can be selected according to actual needs.
A crankcase ventilation monitoring device comprises a controller, wherein the controller is installed in a motor vehicle, and the controller is electrically connected with a pressure sensor. When the vehicle is started, the pressure sensor will upload the detected gas pressure data in the outer duct 110 to the controller, which will compare the gas pressure data with a set gas pressure range, and if the gas pressure data exceeds the set gas pressure range, an intake pressure failure is reported, and a check is performed on the crankcase ventilation system, and if the gas pressure data does not exceed the set gas pressure range, the monitoring is continuously performed.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Those skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A crankcase ventilation duct, comprising:
the double-layer ventilating pipeline comprises an outer layer pipeline and an inner layer pipeline;
the two composite joints are respectively arranged at two ends of the double-layer ventilating duct, the composite joints are provided with an outer-layer pipeline connecting port and an inner-layer pipeline connecting port, the inner-layer pipeline connecting port is connected with the inner-layer pipeline, and the outer-layer pipeline connecting port is connected with the outer-layer pipeline;
the pressure sensor is arranged between the outer layer pipeline and the inner layer pipeline and is electrically connected with a controller installed in a motor vehicle.
2. The crankcase ventilation tube of claim 1, wherein the composite fitting comprises an outer fitting and an inner fitting, the inner fitting being mounted within the outer fitting, the outer fitting having the outer conduit connection port at one end thereof, and the inner fitting having the inner conduit connection port at one end thereof.
3. The crankcase ventilation manifold of claim 2, wherein the outer joint defines an inner joint mounting hole, and wherein the inner joint is mounted within the inner joint mounting hole.
4. The crankcase ventilation tube of claim 3, wherein the nipple receiving hole is provided with a plurality of clips, and the outer side of the nipple is provided with a clamping groove, and the clips are matched with the clamping grooves.
5. The crankcase ventilation tube of claim 4, wherein the number of the buckles is 3-5, and the buckles are evenly distributed in the nipple mounting holes.
6. The crankcase ventilation manifold of claim 2, wherein the other end of the outer joint is provided with a quick-connect port.
7. The crankcase ventilation tube of claim 6, wherein the quick-connect port comprises a baffle ring, a baffle plate and a connecting plate, the baffle plate is arranged on the outer surface of the outer joint, one end of the connecting plate is connected with the baffle plate, the other end of the connecting plate is connected with the baffle ring, and a quick-connect clamping groove is arranged on the connecting plate.
8. The crankcase ventilation manifold of claim 6, wherein a seal is disposed within the quick-connect port.
9. The crankcase ventilation tube of claim 2, wherein the inner joint is coaxially disposed with the outer joint.
10. A crankcase ventilation monitoring device comprising a crankcase ventilation duct according to any one of claims 1 to 9 and a controller, the controller being mounted in a motor vehicle, the controller being electrically connected to the pressure sensor of the crankcase ventilation duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210645609.9A CN114837770A (en) | 2022-06-09 | 2022-06-09 | Crankcase ventilation pipe and monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210645609.9A CN114837770A (en) | 2022-06-09 | 2022-06-09 | Crankcase ventilation pipe and monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114837770A true CN114837770A (en) | 2022-08-02 |
Family
ID=82573553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210645609.9A Pending CN114837770A (en) | 2022-06-09 | 2022-06-09 | Crankcase ventilation pipe and monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114837770A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003279435A (en) * | 2002-03-26 | 2003-10-02 | Japan Atom Energy Res Inst | Leakage detection device and leakage detection method for multiple piping |
| KR20140037571A (en) * | 2012-09-19 | 2014-03-27 | 현대하이스코 주식회사 | Pipe for sensing water leakage and method for the pipe and pipe equipment for sensing water leakage |
| JP2014206091A (en) * | 2013-04-12 | 2014-10-30 | ボルボトラックコーポレーション | Pressure control device |
| KR20170030889A (en) * | 2015-09-10 | 2017-03-20 | 두산중공업 주식회사 | A gas turbine combustor control is possible by using a dual fuel tube containing the sensor and Burner control method using a pressure sensor. |
| CN113357549A (en) * | 2021-06-02 | 2021-09-07 | 江南造船(集团)有限责任公司 | Method for detecting leakage of double-wall pipe in engine room |
| CN216242861U (en) * | 2021-11-09 | 2022-04-08 | 帕萨思汽车零部件（苏州）有限公司 | Double-layer pipe joint structure |
-
2022
- 2022-06-09 CN CN202210645609.9A patent/CN114837770A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003279435A (en) * | 2002-03-26 | 2003-10-02 | Japan Atom Energy Res Inst | Leakage detection device and leakage detection method for multiple piping |
| KR20140037571A (en) * | 2012-09-19 | 2014-03-27 | 현대하이스코 주식회사 | Pipe for sensing water leakage and method for the pipe and pipe equipment for sensing water leakage |
| JP2014206091A (en) * | 2013-04-12 | 2014-10-30 | ボルボトラックコーポレーション | Pressure control device |
| KR20170030889A (en) * | 2015-09-10 | 2017-03-20 | 두산중공업 주식회사 | A gas turbine combustor control is possible by using a dual fuel tube containing the sensor and Burner control method using a pressure sensor. |
| CN113357549A (en) * | 2021-06-02 | 2021-09-07 | 江南造船(集团)有限责任公司 | Method for detecting leakage of double-wall pipe in engine room |
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| Title |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220802 |
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| RJ01 | Rejection of invention patent application after publication |