CN115059876A - Hydraulic rubber hose oil leakage signaling device - Google Patents
Hydraulic rubber hose oil leakage signaling device Download PDFInfo
- Publication number
- CN115059876A CN115059876A CN202210940508.4A CN202210940508A CN115059876A CN 115059876 A CN115059876 A CN 115059876A CN 202210940508 A CN202210940508 A CN 202210940508A CN 115059876 A CN115059876 A CN 115059876A
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- pressure
- hole
- push rod
- leather cup
- cavity
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/005—Leakage; Spillage; Hose burst
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2853—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipe joints or seals
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid Mechanics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Acoustics & Sound (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention belongs to the technical field of hydraulic leakage alarm signaling, and particularly relates to a hydraulic rubber hose oil leakage signaling device for rubber hose oil leakage and early warning of the danger of rubber hose burst in the hydraulic industry.
Description
Technical Field
The invention belongs to the technical field of hydraulic leakage alarm signaling, and particularly relates to a hydraulic rubber tube oil leakage signaling device for rubber tube oil leakage and early warning of rubber tube rupture danger in the hydraulic industry.
Background
The hydraulic rubber pipe in a hydraulic system is a part commonly used for transmitting high-pressure media, the hydraulic rubber pipe is manufactured by inserting a rubber pipe joint into a rubber pipe for buckling, oil leakage or burst can be caused due to quality problems, frequent actions, aging, damage and the like when the hydraulic rubber pipe is used, once the hydraulic rubber pipe bursts, media can leak to pollute the environment, damage equipment, even personal safety and other hazards, the oil leakage or burst part mostly occurs at the buckling part of the rubber pipe joint and the rubber pipe, the rubber pipe buckling part belongs to a weak point, once the oil leakage occurs, the medium is continuously used under the unknown condition and has the risk of burst at any time, particularly in the working condition with higher safety requirements, the hazards caused by burst are large and cannot be effectively overcome, and no targeted solution is provided in the prior art.
Disclosure of Invention
The invention aims to solve the problems and provides a hydraulic rubber hose oil leakage signaling device which can monitor the buckling part of a rubber hose in real time, and once oil leakage occurs, the signaling device transmits information to an information receiving terminal through radio communication to inform that the buckling part of a high-pressure connecting pipe has oil leakage and avoid rubber hose burst.
The invention adopts the following technical scheme:
a hydraulic rubber tube oil leakage signaling device comprises a sealing wrapping piece wrapping a rubber tube buckling section and a pressure signaling assembly, wherein a pressure relief hole cavity is formed in the sealing wrapping piece, and the pressure signaling assembly is connected with the pressure relief hole cavity and used for signaling pressure in the pressure relief hole cavity.
A hydraulic rubber hose oil leakage signaling device comprises a seat body and an anchor ear, wherein the seat body and the anchor ear are buckled to form a sealing wrapping structure, a sealing wrapping piece comprises a seat body and an anchor ear buckled to form a sealing wrapping structure and a rubber sleeve arranged on the inner wall of the wrapping structure, a pressure relief hole cavity is arranged in the rubber sleeve, and the rubber sleeve and the seat body are respectively provided with a communication hole to be connected with the pressure relief hole cavity and a pressure signaling component.
The pressure measuring cabin is arranged in the seat body, the pressure signaling component is arranged in the pressure measuring cabin and comprises a pressure triggering component and a signaling component, wherein the pressure triggering component is of a structure which is deformed or displaced due to pressure change; the signaling component is an element which sends an electric signal by touching.
The pressure trigger assembly comprises a leather cup and a push rod, the signaling assembly is a microswitch, the leather cup, the push rod and the microswitch are arranged in sequence, and one side of the leather cup, which is back to the push rod, is a sealing cavity communicated with the pressure relief hole cavity.
The push rod is installed in the guide holder, through-hole and two-stage step hole in the middle of being provided with in the guide holder, the push rod front end sets up round protruding head, push rod round protruding head root sets up the flange, the push rod body of rod adaptation is packed into in the through-hole in the middle of the guide holder, the spring has been installed in the little one-level step hole in the two-stage step hole, the big one-level step hole in the two-stage step hole of push rod flange portion adaptation, the leather cup seat is provided with the shrinkage pool that adapts in push rod round protruding head, reserve the clearance between shrinkage pool and the round protruding head, the middle bowl body of leather cup is installed in the clearance.
The pressure measuring chamber is of a three-level stepped hole structure, and is a bottom hole, a first stepped hole and a second stepped hole from inside to outside in sequence, the leather cup seat is installed in the bottom hole, the leather cup is adaptive to and installed in the first stepped hole, the guide seat is installed in the second stepped hole, and the leather cup edge is sealed through the leather cup seat and the guide seat butt clamp.
Furthermore, the bowl edge of the leather bowl is provided with S-shaped folds.
The outer side of the leather cup seat is provided with a boss, a containing cavity is formed between the boss and the pressure measuring bulkhead, the communicating holes respectively arranged on the rubber sleeve and the seat body are communicated with the pressure relief hole cavity and the containing cavity, and the leather cup seat is provided with a radial hole communicated with the containing cavity and the concave hole.
A battery cabin is arranged in the seat body, a battery is arranged in the battery cabin, a cover which is connected and installed through screws is arranged at the bottom of the seat body, and the circuit board is fixed in the cover through screws and is connected with the battery and the micro switch through wires.
The invention can obtain the following technical effects:
the rubber tube connector can be adaptive and customized according to different rubber tube diameters, the rubber tube clamping and mounting convenience is high, the overall structure is small and exquisite, excessive extra load is not generated on a rubber tube connector body, electric wires are not required to be connected, the battery compartment and the pressure measuring compartment are high in sealing performance and can be used for various isolation working conditions, sealing oil can be effectively stored and guided in due to the arrangement of the leather cup, the leather seat and the push rod, micro-switches can be triggered by trace oil drainage, the pressure measuring compartment and the battery compartment are convenient to disassemble, the maintenance is simple, and the application scene is wide.
The invention realizes the long-term real-time monitoring of the rubber hose buckling part, and once oil leakage occurs, the information is transmitted to the information receiving terminal through radio communication to inform the rubber hose buckling part that oil leakage has occurred, thereby avoiding the occurrence of rubber hose burst.
Drawings
FIG. 1 is a schematic forward view of the present invention;
FIG. 2 is a left side view of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic sectional view taken along line B-B in FIG. 1;
FIG. 4 is a schematic sectional view taken along line A-A of FIG. 1;
FIG. 5 is a schematic view of the hoop in an open state according to the present invention;
FIG. 6 is an enlarged view of a portion of the invention at FIG. 4C;
fig. 7 is a schematic cross-sectional view of a battery compartment and a pressure measurement compartment according to the present invention.
Wherein, 1-seat body, 2-left anchor ear, 3-right anchor ear, 4-rubber sleeve, 5-pressure relief cavity, 6-leather bowl seat, 7-leather bowl, 8-push rod, 9-spring, 10-guide seat, 11-microswitch, 12-clamp, 13-pressure sleeve, 14-pressure measuring block, 15-battery, 16-battery block, 17-circuit board, 18-cover, 19-battery chamber, 20-pressure measuring chamber, 21-small hole.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention is further described below with reference to fig. 1.
As shown in fig. 1-7, a hydraulic rubber hose leakage signaling device includes a seat body 1, a left anchor ear 2, a right anchor ear 3, a rubber sleeve 4, a cup seat 6, a cup 7, a push rod 8, a spring 9, a guide seat 10, a micro switch 11, a clip 12, a pressing sleeve 13, a pressure measuring block 14, a battery 15, a battery compartment block 16, a circuit board 17, and a cover 18. The inside battery compartment 19 and the pressure measurement cabin 20 of being provided with of pedestal 1, 1 top surface of pedestal is sunken third face of cylinder, the sunken bottom department of face of cylinder sets up the aperture 21 that communicates pressure measurement cabin 20, left staple bolt 2 and 3 medial surfaces of right staple bolt are third face of cylinder structure, 1 top surface of pedestal, 2 medial surfaces of left staple bolt, 3 medial surfaces of right staple bolt constitute a complete interior disc jointly, left staple bolt 2 and right staple bolt 3 articulate both ends about 1 top surface of pedestal respectively for constitute round hole form parcel structure with pedestal 1 after left staple bolt 2 and right staple bolt 3 are closed.
As shown in fig. 1 and 3-4, the rubber sleeve 4 is an open circular structure, a sealing lip edge is arranged at the opening and is provided with a screw through hole, the outer layer of the rubber sleeve 4 is bonded in an inner hole formed after the seat body 1, the left hoop 2 and the right hoop 3 are closed, the rubber sleeve 4 can be opened and closed along with the left hoop 2 and the right hoop 3, the rubber sleeve forms a complete circular inner hole after the left hoop 2 and the right hoop 3 are closed, the circular inner hole comprises sealing holes at two sides and a pressure relief hole cavity 5 at the middle part, a small through hole is arranged on the wall of the rubber sleeve 4 corresponding to the pressure relief hole cavity 5, and the small through hole is matched and aligned with the small hole 21.
Referring to fig. 3-4 and 7, the ballast chamber 20 has a three-step stepped hole structure including a bottom hole, a first stepped hole and a second stepped hole in sequence from inside to outside.
A pressure signaling assembly is disposed within the ballast 20, the pressure signaling assembly comprising: the leather cup comprises a leather cup seat 6, a leather cup 7, a push rod 8, a spring 9, a guide seat 10, a microswitch 11, a clamp 12 and a pressing sleeve 13.
Survey the ballast 20 from inside to outside install leather cup seat 6 in proper order, leather cup 7, guide holder 10, press cover 13, survey the ballast stifled 14, wherein, the adaptation of leather cup seat 6 is installed in the bottom hole, the adaptation of leather cup 7 bowl limit is installed in first ladder hole, guide holder 10, press cover 13 adaptation in proper order to install in second ladder hole, survey the ballast stifled 14 and be provided with the external screw thread, the second ladder hole is provided with the internal thread that is used for installing survey the ballast stifled 14, will press cover 13 through surveying the stifled 14 ejection of ballast, guide holder 10, leather cup 7, leather cup seat 6 is fixed in proper order surveys the ballast 20.
A middle through hole and two-stage step holes are arranged in the guide seat 10, a round convex head is arranged at the front end of the push rod 8, a flange is arranged at the root of the round convex head of the push rod 8, a rod body of the push rod 8 is fittingly arranged in the middle through hole of the guide seat 10, a spring 9 is arranged in a small step hole in the two-stage step hole, the flange arranged at the root of the round convex head of the push rod 8 is fittingly arranged in a large step hole in the two-stage step hole, a concave hole which is fittingly arranged in the round convex head of the push rod 8 is arranged on the cup seat 6, a gap is reserved between the concave hole and the round convex head, a boss is arranged at the outer side of the cup seat 6, a containing cavity is formed between the boss and the wall of the pressure measuring cabin 20, the small hole 21 is communicated with the containing cavity, a radial hole is arranged on the boss of the cup seat 6 to be communicated with the containing cavity and the concave hole, a middle bowl body of the cup 7 is arranged in the gap between the round convex head and the concave hole, S-shaped folds are arranged on the bowl edge of the cup seat 7, the cup edge is fittingly arranged in the first step hole, and is sealed with the guide seat 10, the S-shaped fold part is used for increasing the deformation of the leather cup and increasing the stroke of the push rod 8.
As shown in fig. 3-4, a microswitch 11 is arranged on the end face of the guide seat 10 adjacent to the pressing sleeve 13, a clip 12 is fixed on the end face of the guide seat 10 by a screw to clamp the microswitch 11, so that the microswitch 11 is fixed in the hollow cavity of the pressing sleeve 13, the action head of the microswitch 11 is aligned with the tail part of the rod body of the push rod 8, the push rod 8 can touch the action head, a battery 15 is arranged in a battery compartment 19 of the seat body 1, a battery compartment plug 16 is arranged in the opening of the battery compartment of the seat body 1 by a screw thread, a circuit board 17 is fixed in a cover 18 by a screw and is connected with the battery 15 and the microswitch 11 by a wire, and the cover 18 is arranged at the bottom of the seat body 1 by a screw.
The circuit board 17 performs wireless transmission and reception of data signals, and performs communication with a terminal.
The working mode is as follows:
the left hoop 2 and the right hoop 3 are opened, the rubber tube pressing and buckling position is placed on the top surface of the seat body 1 in the state shown in figure 5, then the left hoop 2 and the right hoop 3 are buckled, the opening and the seat body 1 are connected through the screws after the left hoop 2 and the right hoop 3 are closed to form a circular hole structure, at the moment, the pressing and buckling position of the rubber tube is located in the pressure relief hole cavity 5, and the two sides of the pressure relief hole cavity 5 are sealed through the sealing holes at the two sides, and the state shown in figure 4 is realized.
If the oil leak of withhold department, the draining leaks in inclosed pressure release vestibule 5 at first, the draining loops through the little through-hole of gum cover 4 walls, aperture 21, get into the 6 shrinkage pools of leather cup seat behind the radial hole of 6 bosss of leather cup seat, be airtight appearance chamber between shrinkage pools and the leather cup 7, pressure acts on leather cup 7, leather cup 7 warp and promote push rod 8 and overcome the spring force of spring 9 and push forward, and finally trigger micro-gap switch 11, battery 15 supplies power in circuit board 17 and micro-gap switch 11, circuit board 17 is with signal transmission to receiving terminal.
The battery 15 can be taken and put by detaching the battery compartment plug 16, the leather cup seat 6, the leather cup 7, the push rod 8, the spring 9, the guide seat 10, the micro switch 11, the clamp 12 and the pressing sleeve 13 can be achieved by detaching the pressure measuring compartment plug 14 of the pressure measuring compartment 20.
Claims (9)
1. The utility model provides a hydraulic pressure rubber tube leaks oil and sends a news ware which characterized in that: the pressure-releasing device comprises a sealing wrapping piece wrapping a rubber tube buckling section and a pressure signaling assembly, wherein a pressure-releasing hole cavity (5) is formed in the sealing wrapping piece, and the pressure signaling assembly is connected with the pressure-releasing hole cavity (5) and used for signaling the pressure in the pressure-releasing hole cavity (5).
2. The hydraulic rubber tube leakage alarm according to claim 1, wherein: including pedestal and staple bolt, the pedestal forms sealed parcel structure with the staple bolt lock, sealed parcel spare includes that pedestal and staple bolt lock form sealed parcel structure and gum cover (4) that this parcel structure inner wall set up, pressure release vestibule (5) set up in gum cover (4), gum cover, pedestal set up the intercommunicating pore connection respectively pressure release vestibule (5) with the pressure signaling subassembly.
3. The hydraulic rubber tube leakage alarm according to claim 2, wherein: the base is internally provided with a pressure measuring cabin (20), the pressure signaling component is arranged in the pressure measuring cabin (20), and the pressure signaling component comprises a pressure triggering component and a signaling component, wherein the pressure triggering component is of a structure which is deformed or displaced by pressure change; the signaling component is an element which sends an electric signal by touch.
4. The hydraulic rubber tube leakage alarm according to claim 3, wherein: the pressure trigger assembly comprises a leather cup (7) and a push rod (8), the signaling assembly is a microswitch (11), the leather cup (7), the push rod (8) and the microswitch (11) are sequentially arranged, one side, back to the push rod (8), of the leather cup (7) is a sealing cavity, and the sealing cavity is communicated with the pressure relief hole cavity (5).
5. The hydraulic rubber tube leakage alarm according to claim 4, wherein: push rod (8) are installed in guide holder (10), through-hole and two-stage step hole in the middle of being provided with in guide holder (10), push rod (8) front end sets up round protruding head, push rod (8) round protruding head root sets up the flange, in push rod (8) body of rod adaptation was packed into guide holder (10) middle through-hole, spring (9) have been installed in the little one-level step hole in the two-stage step hole, the big one-level step hole in push rod (8) flange portion adaptation two-stage step hole, leather bowl seat (6) are provided with the shrinkage pool of adaptation in push rod (8) round protruding head, reserve the clearance between shrinkage pool and the round protruding head, the bowl body is installed in the clearance in the middle of leather bowl (7).
6. The hydraulic rubber-hose oil leakage annunciator of claim 5, characterized in that: survey ballast (20) is tertiary shoulder hole structure, and from interior and outer be the bottom hole in proper order, first shoulder hole, second shoulder hole, leather cup seat (6) install in the bottom hole, leather cup (7) adaptation is installed in first shoulder hole, guide holder (10) install in second shoulder hole, leather cup (7) bowl limit is sealed through leather cup seat (6) and guide holder (10) butt clamp.
7. The hydraulic hose leak indicator according to any one of claims 4, 5 and 6, wherein: and an S-shaped fold is arranged on the bowl edge of the leather bowl (7).
8. The hydraulic hose oil leakage annunciator of claim 5 or 6, wherein: the outer side of the leather cup seat (6) is provided with a boss, a containing cavity is formed between the boss and the wall of the pressure measuring cabin (20), communication holes respectively arranged on the rubber sleeve and the seat body are communicated with the pressure relief hole cavity and the containing cavity, and the leather cup seat (6) is provided with a radial hole communicated with the containing cavity and the concave hole.
9. The hydraulic rubber tube leakage alarm according to claim 2, wherein: be provided with battery compartment (19) in the pedestal, set up battery (15) in battery compartment (19), pedestal (1) bottom is provided with lid (18) of screw connection installation, and circuit board (17) are fixed in lid (18) with the screw and connect battery (15) and micro-gap switch (11) with the electric wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210940508.4A CN115059876B (en) | 2022-08-06 | 2022-08-06 | Hydraulic rubber hose oil leakage signaling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210940508.4A CN115059876B (en) | 2022-08-06 | 2022-08-06 | Hydraulic rubber hose oil leakage signaling device |
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| Publication Number | Publication Date |
|---|---|
| CN115059876A true CN115059876A (en) | 2022-09-16 |
| CN115059876B CN115059876B (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210940508.4A Active CN115059876B (en) | 2022-08-06 | 2022-08-06 | Hydraulic rubber hose oil leakage signaling device |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2317301A1 (en) * | 1972-04-07 | 1973-10-18 | M & J Dev Co | DEVICE AND METHOD FOR LEAK DETECTION |
| JPH09145519A (en) * | 1995-11-17 | 1997-06-06 | Japan Small Corp | Method and apparatus for testing water pressure of sluice valve |
| DE19744287A1 (en) * | 1997-10-07 | 1999-04-08 | Manfred Aigner | Temporary sealing of pipes especially for leakage testing in heating and sanitary installations |
| CN101556201A (en) * | 2009-05-13 | 2009-10-14 | 湖北汽车工业学院 | Mechanically connected sealing device for detecting leakage of nylon pipe |
| WO2016108695A1 (en) * | 2015-01-02 | 2016-07-07 | Odin Connect As | Method and device to detect fluid leakage in a joint area between two pipe sections. |
| CN108051152A (en) * | 2017-11-09 | 2018-05-18 | 马超 | A kind of automatic leakage of monitoring device for pipeline |
| CN207487917U (en) * | 2017-12-11 | 2018-06-12 | 温州市来蚨阀门有限公司 | A kind of valve deck and the sealing detection mechanism of valve body junction |
| US20180252349A1 (en) * | 2017-03-02 | 2018-09-06 | Scott Grove | System and method for reducing environmental impact caused by hydraulic oil leaking from a tractor |
| CN212226348U (en) * | 2020-08-31 | 2020-12-25 | 刘锡磊 | Sealing joint of special rubber pipe for petroleum |
| CN214890554U (en) * | 2021-05-18 | 2021-11-26 | 辛诚 | Independent combustible gas alarm device |
| CN216556537U (en) * | 2021-12-30 | 2022-05-17 | 王中武 | Safety protection device for detecting gas leakage of petroleum and natural gas pipeline |
-
2022
- 2022-08-06 CN CN202210940508.4A patent/CN115059876B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2317301A1 (en) * | 1972-04-07 | 1973-10-18 | M & J Dev Co | DEVICE AND METHOD FOR LEAK DETECTION |
| JPH09145519A (en) * | 1995-11-17 | 1997-06-06 | Japan Small Corp | Method and apparatus for testing water pressure of sluice valve |
| DE19744287A1 (en) * | 1997-10-07 | 1999-04-08 | Manfred Aigner | Temporary sealing of pipes especially for leakage testing in heating and sanitary installations |
| CN101556201A (en) * | 2009-05-13 | 2009-10-14 | 湖北汽车工业学院 | Mechanically connected sealing device for detecting leakage of nylon pipe |
| WO2016108695A1 (en) * | 2015-01-02 | 2016-07-07 | Odin Connect As | Method and device to detect fluid leakage in a joint area between two pipe sections. |
| US20180252349A1 (en) * | 2017-03-02 | 2018-09-06 | Scott Grove | System and method for reducing environmental impact caused by hydraulic oil leaking from a tractor |
| CN108051152A (en) * | 2017-11-09 | 2018-05-18 | 马超 | A kind of automatic leakage of monitoring device for pipeline |
| CN207487917U (en) * | 2017-12-11 | 2018-06-12 | 温州市来蚨阀门有限公司 | A kind of valve deck and the sealing detection mechanism of valve body junction |
| CN212226348U (en) * | 2020-08-31 | 2020-12-25 | 刘锡磊 | Sealing joint of special rubber pipe for petroleum |
| CN214890554U (en) * | 2021-05-18 | 2021-11-26 | 辛诚 | Independent combustible gas alarm device |
| CN216556537U (en) * | 2021-12-30 | 2022-05-17 | 王中武 | Safety protection device for detecting gas leakage of petroleum and natural gas pipeline |
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| Title |
|---|
| 付志辉等: "燃油胶管失效模式及应对措施探析", 《企业科技与发展》 * |
| 徐志远等: "浅谈如何控制液压***泄漏", 《科技信息(科学教研)》 * |
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