CN218725066U - Fuel oil leakage positioning sensing cable - Google Patents
Fuel oil leakage positioning sensing cable Download PDFInfo
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- CN218725066U CN218725066U CN202222937254.9U CN202222937254U CN218725066U CN 218725066 U CN218725066 U CN 218725066U CN 202222937254 U CN202222937254 U CN 202222937254U CN 218725066 U CN218725066 U CN 218725066U
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Abstract
The utility model relates to a fuel oil leaks location sensing cable, including the polymer weaving layer, meet oil inflation rubber layer, the insulating layer, the signal detection layer, the polymer weaving layer, meet oil inflation rubber layer and insulating layer from outer outside to interior parcel in proper order in the outside on signal detection layer, signal detection in situ connects into the signal of telecommunication return circuit through the signal line, when the local infiltration fuel oil of cable, meet this department's signal line two-pole contact short circuit of extrusion behind the oil inflation rubber layer inflation, change the signal of telecommunication return circuit resistance, and then calculate oil leak point position. The utility model adopts a detection scheme that the signal line at the oil leakage point is short-circuited, so that the resistance of the whole signal loop is changed, and the device has the distribution detection characteristic and high detection precision; the signal line A pole and the signal line B pole of the utility model adopt different design structures, and can be quickly contacted after receiving pressure; the utility model discloses a signal line sealed in the insulating layer, have good dampproofing, explosion-proof performance.
Description
Technical Field
The utility model relates to a fuel oil detects technical field, in particular to fuel oil leaks location sensing cable.
Background
The fuel oil has the risk of leakage in the processes of production, transportation and storage, and once the fuel oil leaks, the fuel oil not only causes waste and environmental pollution, but also easily causes major safety accidents due to the inflammability and explosiveness of the fuel oil. Therefore, the leakage problem can be found in time, the leakage point can be accurately positioned, and the method has important practical significance for timely maintenance, production guarantee and avoidance of major safety accidents.
Aiming at the problems of oil leakage detection and positioning, a manual inspection method, a pressure sensor detection method, a gasoline concentration detection method and a video image analysis method are mainly adopted at present. The manual inspection method has the problems of low detection efficiency, poor real-time performance, waste of manpower and material resources and the like; the pressure sensor detection method adopts a pressure sensor for detection, and has the problems of low detection and positioning accuracy due to the fact that the sensor installation density cannot be too high, a detection circuit is complex and the like; the gasoline concentration detection method and the video image analysis method are easily influenced by the working environment and easily generate a false alarm phenomenon.
SUMMERY OF THE UTILITY MODEL
To the oil leak detection among the above-mentioned technical problem and the defect that positioning scheme adaptability is poor and can not carry out the accurate positioning to the oil leak point, the utility model provides a fuel oil leaks location sensing cable based on distributing type leak detection and location technique. The cable can be conveniently installed below an oil storage tank or an oil pipeline, oil leakage points can be quickly and accurately detected and positioned, the cable has the characteristics of softness, customizable length, convenience in detection and the like, and various measuring range requirements can be met.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a fuel oil leakage location sensing cable, includes polymer weaving layer, meets oily inflation rubber layer, insulating layer, signal detection layer, polymer weaving layer, meet oily inflation rubber layer and insulating layer wrap up in proper order in the outside on signal detection layer from outer to interior, connect into the signal loop through the signal line in the signal detection layer, when the local infiltration fuel oil of cable, meet this department signal line two poles of the earth contact short circuit of extrusion behind the oil inflation rubber layer inflation, change signal loop resistance, and then calculate oil leak point position.
The signal detection layer comprises a gap rubber core, a signal line A pole, a signal line B pole and a wiring terminal, the signal line A pole and the signal line B pole are embedded in the gap rubber core, a gap is reserved between the signal line A pole and the signal line B pole, and the wiring terminal is arranged at the gap rubber core outer end and is electrically connected with the signal line A pole and the signal line B pole.
The A pole of the signal wire is made of wire-shaped nickel-chromium alloy and is in a sawtooth shape; the B pole of the signal wire is also made of nickel-chromium alloy, and the section of the B pole is in a semi-circular arc shape; the end part of the arc surface bulge of the B pole of the signal wire is opposite to the A pole of the signal wire.
The polymer braided layer is braided by tough fluorine-containing polymer, and fuel oil can smoothly permeate into the rubber layer which expands with oil through the polymer braided layer.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model adopts a detection scheme that the signal line at the oil leakage point is short-circuited, so that the resistance of the whole signal loop is changed, and the device has the distribution detection characteristic and high detection precision;
2. the signal line A pole and the signal line B pole of the utility model adopt different design structures, and can be quickly contacted after receiving pressure;
3. the signal wire adopted by the utility model is sealed in the insulating layer, and has good moisture-proof and explosion-proof performance;
4. the utility model discloses a sensing cable is soft, has certain elasticity, convenient transportation and installation.
Drawings
FIG. 1 is a structural diagram of a fuel oil leakage positioning sensing cable according to the present invention;
fig. 2 is a structural diagram of a signal line a pole and a signal line B pole of the present invention;
fig. 3 is a schematic diagram of the detection circuit of the present invention.
In the figure: 1. a polymer braid; 2. the rubber layer expands when meeting oil; 3. an insulating layer; 4. a signal detection layer; 401. a signal line A pole; 402. a signal line B pole; 403. spacing rubber cores; 404. a wiring terminal A; 405. a wiring terminal B; 406. a connecting terminal C; 407. a wiring terminal D; 501. a wiring terminal E; 502. a wiring terminal F; 503. and (5) short-circuit the line.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly and completely described below. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
As shown in figure 1, the fuel oil leakage positioning sensing cable comprises a polymer braided layer 1, an oil-encountering expansion rubber layer 2, an insulating layer 3 and a signal detection layer 4, wherein the polymer braided layer 1, the oil-encountering expansion rubber layer 2 and the insulating layer 3 are sequentially wrapped outside the signal detection layer 4 from outside to inside, the signal detection layer 4 is internally connected into an electric signal loop through a signal wire, when the cable is locally permeated with fuel oil, the oil-encountering expansion rubber layer 2 is expanded to extrude two electrode wires of the signal to contact a short circuit, the resistance of the electric signal loop is changed, and the position of an oil leakage point is calculated.
The signal detection layer 4 comprises a spacing rubber core 403, a signal line A pole 401, a signal line B pole 402 and a connecting terminal, the signal line A pole 401 and the signal line B pole 402 are embedded in the spacing rubber core 403, a gap is reserved between the signal line A pole 401 and the signal line B pole 402, and the connecting terminal is arranged at the outer end of the spacing rubber core 403 and is electrically connected with the signal line A pole 401 and the signal line B pole 402.
The signal line A pole 401 is made of wire-shaped nickel-chromium alloy and is in a sawtooth shape; the signal wire B pole 402 is also made of nickel-chromium alloy, and the section of the signal wire B pole is in a semi-circular arc shape; the convex end of the arc-shaped surface of the signal line B pole 402 is opposite to the signal line a pole 401.
The polymer braided layer 1 is braided by tough fluorine-containing polymer, and fuel oil can smoothly permeate into the oil-swelling rubber layer 2 through the layer.
The oil-swelling rubber layer 2 is positioned between the polymer braided layer 1 and the insulating layer 3, the oil-swelling rubber layer swells after absorbing fuel oil, and pressure is transmitted to the signal detection layer 4 through the insulating layer 3.
The insulating layer 3 is positioned between the oil-swelling rubber layer 2 and the signal detection layer 4, and plays a role in insulating the signal wire from the outside.
The signal detection layer 4 is located inside the insulating layer 3 and is composed of a spacing rubber core 403, a signal line A pole 401, a signal line B pole 402 and a wiring terminal. The core 403 cross-section is glued to the interval for the annular, inlays on the 403 inner wall of the core is glued to the interval and is fixed with the utmost point 401 of signal line A and the utmost point 402 of signal line B, has certain clearance between the utmost point 401 of signal line A and the utmost point 402 of signal line B, and the core 403 is glued to the interval plays the effect of supporting and insulating the utmost point 401 of signal line A and the utmost point 402 of signal line B.
Referring to fig. 2, the signal line a pole 401 is made of nichrome and is zigzag-shaped. The signal line B pole 402 is made of a half-cylinder nickel-chromium alloy material. After receiving the pressure generated by the rubber layer 2 expanding with oil, the signal line a pole 401 and the signal line B pole 402 deform and short-circuit, thereby changing the resistance of the signal loop.
Terminals a404, B405, C406, and D407 are connected to both ends of the signal line a pole 401 and the signal line B pole 402.
As shown in fig. 3, the electrical connections of the fuel oil leakage positioning sensing cable detection circuit are as follows: the connection terminal C406 and the connection terminal D407 are externally connected with a short circuit line 503, the connection terminal A404 is externally connected with the positive end of a voltage source Vcc, the negative end of the voltage source Vcc is grounded, the connection terminal B405 is externally connected with one end of a sampling resistor Ro, the other end of the sampling resistor Ro is grounded, and the connection terminal E501 and the connection terminal F502 are externally connected with the two ends of the sampling resistor Ro and serve as the output Uo of the detection circuit.
A method for using a fuel oil leakage positioning sensing cable comprises the following steps:
1) Fixing a fuel oil leakage positioning sensing cable at the lower part of a pipeline to be detected or a part to be detected;
2) The tail ends of a connecting terminal C406 of a signal line A pole 401 and a connecting terminal D407 of a signal line B pole 402 are connected through a short-circuit line 503 to form a signal loop, a connecting terminal A404 of the signal line A pole 401 is externally connected with the positive end of a voltage source, the negative end of the voltage source is grounded, a connecting terminal B405 of the signal line B pole 402 is externally connected with a sampling resistor Ro, the other end of the sampling resistor Ro is grounded, and a connecting terminal E501 and a connecting terminal F502 are externally connected to the two ends of the sampling resistor Ro and serve as the output Uo of the detection circuit;
3) When the pipeline leaks, the rubber layer 2 which expands when meeting oil absorbs the fuel oil seeped from the pipeline and expands, and the pressure generated by expansion acts on the signal line A pole 401 and the signal line B pole 402 through the insulating layer 3, so that the signal line A pole 401 and the signal line B pole 402 are contacted at the leakage point to generate short circuit, the resistance of a signal loop is changed, the output voltage Uo of the wiring terminal E501 and the output voltage Uo of the wiring terminal F502 are changed, and the position of an oil leakage point is calculated according to the magnitude of the output voltage Uo;
4) The relation between the oil leakage point position l and the output voltage Uo is as follows: let the resistivities of the A pole 401 and the B pole 402 of the signal line be rho, the oil leakage point be l, and the sectional area of the A pole 401 of the signal line be s A And the cross-sectional area of the B pole 402 of the signal line is s B Then the resistance of the a pole 401 of the signal line is RA = ρ ls A The resistance of the B pole 402 of the signal line is RB = ρ ls B . The expression of the output voltage obtained according to the voltage division principle of the series circuit is Uo = s A s B R o V cc (ρs B l+ρs A l+R o s A s B ) The closing between the oil leakage point position l and the output voltage UO can be obtained through arrangementThe system formula is: l =(s) A s B R o V cc U o -R o s A s B )(ρs A +ρs B )。
Claims (4)
1. The fuel oil leakage positioning sensing cable is characterized by comprising a polymer woven layer, an oil swelling rubber layer, an insulating layer and a signal detection layer, wherein the polymer woven layer, the oil swelling rubber layer and the insulating layer are sequentially wrapped outside the signal detection layer from outside to inside, the signal detection layer is connected into an electric signal loop through a signal wire, when the cable is locally permeated with fuel oil, the oil swelling rubber layer is swelled and then the two electrodes of the signal wire are extruded to form a short circuit, the resistance of the electric signal loop is changed, and the position of an oil leakage point is calculated.
2. The fuel oil leakage positioning sensing cable according to claim 1, wherein the signal detection layer comprises a spacing rubber core, a signal line pole A, a signal line pole B and a connection terminal, the signal line pole A and the signal line pole B are embedded in the spacing rubber core, a gap is left between the signal line pole A and the signal line pole B, and the connection terminal is arranged at the outer end of the spacing rubber core and is electrically connected with the signal line pole A and the signal line pole B.
3. The fuel oil leakage localization sensing cable of claim 2, wherein the signal line a pole is made of nichrome wire and is zigzag; the B pole of the signal wire is also made of nickel-chromium alloy, and the section of the B pole is in a semi-circular arc shape; the end part of the arc surface bulge of the B pole of the signal wire is opposite to the A pole of the signal wire.
4. The fuel oil leakage localization sensing cable of claim 1, wherein said polymer braid is braided from a fluoropolymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222937254.9U CN218725066U (en) | 2022-11-04 | 2022-11-04 | Fuel oil leakage positioning sensing cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222937254.9U CN218725066U (en) | 2022-11-04 | 2022-11-04 | Fuel oil leakage positioning sensing cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218725066U true CN218725066U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222937254.9U Active CN218725066U (en) | 2022-11-04 | 2022-11-04 | Fuel oil leakage positioning sensing cable |
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| Country | Link |
|---|---|
| CN (1) | CN218725066U (en) |
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- 2022-11-04 CN CN202222937254.9U patent/CN218725066U/en active Active
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