CN218098191U - Leakage detection cable with heating function and leakage detection system - Google Patents

Abstract

The utility model is suitable for a cable field provides a weeping of function of generating heat detects cable, and the weeping detects the cable and includes: the detection cable comprises a detection cable body and a detection unit, wherein the detection cable body comprises an induction wire with a conductive outer layer; the plurality of electric heating wires are all arranged in the detection cable body, and are insulated and isolated from the induction wire and the plurality of electric heating wires; each electric heating wire comprises a plastic rubber coating layer and an electric heating layer wrapped inside the plastic rubber coating layer, and the electric resistivity of the electric heating layers in the electric heating wires is different from each other. The utility model provides an it has many insulated electric heat lines each other to embed in the weeping detects the cable, and the resistivity of each electric heat line is mutually different, can select to use wherein the electric heat line that the effect is suitable generates heat according to operational environment. When the liquid leakage detection system works, the electric heating wire used by being electrified can continuously heat, and the water vapor of the dust attached to the induction wire can be evaporated, so that false alarm is avoided.

Description

Leakage detection cable with heating function and leakage detection system

Technical Field

The utility model belongs to the technical field of the cable, especially, relate to a weeping detection cable and weeping detecting system of function generate heat in area.

Background

At present, various electronic devices are increasingly applied to the production and living fields, such as power plants, equipment rooms, computer rooms, telecommunication rooms, power rooms, building buildings, pipelines and the like, and because the staggered distribution of various electric wires can cause potential safety hazards and affect the tidiness and beauty of use places, the electric wires are generally arranged in walls or floors.

Once water leakage occurs in the wall or the floor, the conditions inside the wall and in the floor cannot be visually seen, and dangerous conditions such as electric wire leakage or short circuit are likely to occur, so that the water leakage detection of pipelines, floors and walls is particularly important. The common detection mode is that two metal electrodes or two exposed metal wires are used as sensing devices and distributed on the ground of a detected place, and when water leakage occurs, leaked water can be used as a conductor to enable the two sensing devices to be in short circuit to trigger alarm.

When the metal induction wire is used, the metal induction wire is generally placed on the ground, and dust is adhered to the metal induction wire due to the dust on the ground, so that a circle of dust covers the surface of the metal induction wire after a long time. When the environment is humid, dust on the metal induction wire absorbs water vapor, so that electricity can be conducted, and an alarm is triggered by mistake. Although the dust can be manually wiped, the metal induction wire is uneven in appearance and is not easy to wipe in some places, so that the metal induction wire cannot be quickly recovered to be normal, and the false alarm can be continued theoretically.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is how to avoid the wrong report alarm in humid environment.

For solving the technical problem, the first aspect, the utility model provides a weeping of function detects cable generates heat in area, the weeping detects the cable and includes: a detection cable body including an induction wire having a conductive outer layer; the plurality of electric heating wires are all arranged in the detection cable body, and are insulated and isolated from the induction wire and the plurality of electric heating wires; each electric heating wire comprises a plastic coating layer and an electric heating layer wrapped inside the plastic coating layer, and the electric resistivities of the electric heating layers in the electric heating wires are different.

Further, the electrothermal layer includes: the conductive layer comprises a first conductive layer, a second conductive layer and a filling layer, wherein the filling layer is located between the first conductive layer and the second conductive layer, the filling layer is doped with conductive particles, and the conductive particles are used for forming a conductive path between the first conductive layer and the second conductive layer.

Furthermore, the outside of the plastic rubber coating layer is wrapped with a beam-shaped fixing layer.

Furthermore, the exterior of the beam-shaped fixing layer is wrapped with a shielding layer.

Further, the shielding layer is wrapped with a protective layer.

In a second aspect, the utility model also provides a weeping detecting system, the detecting system that leaks includes: the liquid leak detection cable according to the first aspect; the first power supply device is electrically connected with the detection cable body to form an electric loop for detecting leakage; and the second power supply device is electrically connected with a selected one of the plurality of electric heating wires to form an electric loop for continuously heating.

Further, the second power supply device comprises an output power adjusting module for adjusting the power supply parameters of the electric heating wire.

Further, the leakage detection system further includes: the humidity detector is used for detecting an environment humidity parameter; and the input end of the controller is electrically connected with the humidity detector, and the output end of the controller is electrically connected with the second power supply device and used for controlling whether the second power supply device needs to supply power to the electric heating wire or not according to the detection result of the humidity detector.

The utility model provides an it has many insulated electric heat lines each other to embed in the weeping detects the cable, and the resistivity of each electric heat line is mutually different, can select to use wherein the electric heat line that the effect is suitable generates heat according to operational environment. When weeping detecting system during operation, the hot wire that is used by the circular telegram can continuously generate heat, can evaporate the steam of the dust of attaching to on the response line, avoids the wrong report to police, and dry dust is also cleaned more easily on the response line moreover, can make the response line resume normal fast to insulating isolation between hot wire and the response line also can not cause the influence to the weeping detection of response line.

Drawings

Fig. 1 is a structural diagram of a liquid leakage detection cable according to a first embodiment of the present invention;

fig. 2 is a cross-sectional view of a liquid leakage detection cable according to a first embodiment of the present invention;

fig. 3 is a sectional view of an electric heating wire according to a first embodiment of the present invention;

fig. 4 is a block diagram of a water leakage detection system according to a second embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The utility model discloses the structure of weeping detection cable that first embodiment provided is shown in fig. 1, fig. 2, and this weeping detection cable T has the function of generating heat, including detecting cable body 1 and the many electric heat lines 2 of built-in detecting cable body 1.

The detection cable body 1 may be a cable for detecting water leakage, a cable for detecting oil leakage, a cable for detecting acid leakage, a cable for detecting oil leakage, or a cable for detecting leakage of other solvents. The test cable body 1 generally comprises a sensing wire having a conductive outer layer and a test wire having a non-conductive outer layer.

The main function of the electric heating wire 2 is to continuously heat when in use, so as to evaporate the water vapor of the dust attached to the induction wire and avoid false alarm.

The detection cable body 1 and each electric heating wire 2 work independently, no electric signal or control signal is transmitted between the two, in order to avoid mutual interference, each electric heating wire 2 is insulated and isolated from the induction wire of the detection cable body 1, and a plurality of electric heating wires 2 are also insulated and isolated from each other. Fig. 1 and 2 show a cable structure by taking the leakage detection of the leakage detection cable T as an example, and it can be seen that a first groove 11, a second groove 12, a third groove 13 and a fourth groove 14 which extend spirally along the length direction are arranged on the detection cable body 1, the grooves are separated by an insulating protrusion 15, and the insulating protrusion 15 also extends spirally along the length direction of the detection cable body 1. The first groove 11 and the second groove 12 are oppositely arranged, and the third groove 13 and the fourth groove 14 are oppositely arranged. First metal wires 1611 and second metal wires 1621 are embedded in the first groove 11 and the second groove 12 respectively, third metal wires 1631 and fourth metal wires 1641 are embedded in the third groove 13 and the fourth groove 14 respectively, a conductive plastic layer 1612 is wrapped on the outer surface of the first metal wires 1611, a conductive plastic layer 1622 is wrapped on the outer surface of the second metal wires 1621, a non-conductive plastic layer 1632 is wrapped on the outer surface of the third metal wires 1631, a non-conductive plastic layer 1642 is wrapped on the outer surface of the fourth metal wires 1641, and the unit-length resistances of the four metal wires are precisely processed and are constant. The height of the four grooves after being embedded into the corresponding metal lines is lower than that of the insulating protrusion 15, wherein the first metal line 1611 and the second metal line 1612 are used as sensing lines, and the third metal line 1631 and the fourth metal line 1641 are used as sensing lines. In use, leakage can short circuit between the first metal line 1611 and the second metal line 1612, thus allowing for water leak detection.

Of course, in practical implementation, the detection cable body 1 is not limited to the spiral structure shown in fig. 1 and 2, and may be designed to be in a shape of a flat wire, a mesh wire, or the like.

As shown in fig. 3, each of the heating wires 2 includes a plastic coating layer 21 and a heating layer 22 wrapped inside the plastic coating layer 21, wherein the plastic coating layer 21 mainly electrically isolates the heating layer 22 from the outside.

When the electric heating wire is used, one electric heating wire needs to be selected from the multiple electric heating wires 2 to be electrified and is selected for use, and the electric heating layers in the multiple electric heating wires 2 have different resistivities, so that which electric heating wire is selected for use according to the use environment.

The electrothermal layer 22 includes a first conductive layer 221, a second conductive layer 222, and a filling layer. The filling layer is located between the first conductive layer 221 and the second conductive layer 222, and the filling layer is doped with conductive particles 223, and the conductive particles 223 are used to form a conductive path between the first conductive layer 221 and the second conductive layer 222. The electric heating layer 22 has a resistivity that the first conductive layer 221, the second conductive layer 222, and the conductive particles 223 are integrally formed.

When the external power supply supplies power to the electric heating layer 22, the whole electric heating layer is equivalent to a conductive wire due to the existence of the conductive particles 223, so that the electric heating layer 22 can continuously generate heat, and the water vapor on the induction wire of the liquid leakage detection cable T is evaporated.

The doping amount of the conductive particles 223 in the filling layer is not limited and can be flexibly adjusted according to a specific use scenario, but it must be satisfied that the conductive particles 223 can form a conductive path between the first conductive layer 221 and the second conductive layer 222. For a more humid use environment, the doping amount of the conductive particles 223 may be designed to be larger so as to generate more heat to evaporate the water vapor, and for a less humid use environment, the doping amount of the conductive particles 223 may be designed to be reduced appropriately.

As an embodiment, the plastic covering 21 is further covered with a bundle fixing layer 23, and the bundle fixing layer 23 is used to make the electric heating wire 2 have a predetermined shape, such as a cylindrical shape, a flat shape, etc., and a hard material is generally used.

In one embodiment, the beam-shaped fixing layer 23 is externally wrapped with a shielding layer 24 for shielding external electromagnetic interference signals.

The shielding layer 24 may be further covered with a protective layer 25 for protecting the heating wire 2 from being scratched and broken during production and transportation.

The utility model discloses the second embodiment provides a weeping detecting system, as shown in FIG. 4, include:

the liquid leakage detecting cable T as described in the first embodiment;

a first power supply device 31 electrically connected to the detection cable body 1 to form an electric circuit for detecting leakage; during connection, the sensing lines and the detection lines are alternately connected and then integrally connected to the positive electrode and the negative electrode of the first power supply device 31.

The second power supply device 32 is electrically connected to the electrothermal layer 22 for forming an electric circuit for continuously generating heat.

The first power device 31 and the second power device 32 may be integrated into a power device with multiple power supply ports, and different power supply ports are electrically connected to the detection cable body 1 and the heating wire 2, respectively.

Considering different usage environments, for example, a large moisture environment requires more heat generated by the heating wire 2, and a small moisture environment requires less heat generated by the heating wire 2, so that the present embodiment provides two ways to dynamically adjust the power supply parameters of the second power device 32, as follows:

first, the second power supply device 31 includes an output power adjusting module for adjusting the power supply parameters to the heating wire 2, for example, a plurality of selection buttons may be designed, each button represents different power outputs, or a knob is designed, and the knob is rotated to different gears to represent different power outputs.

Secondly, as shown in fig. 4, the leakage detection system further includes: moisture detector 4 and controller 5, moisture detector 4 are used for detecting the ambient humidity parameter, and the input and the moisture detector 4 electricity of controller 5 are connected, and the output is connected with second power supply unit 32 electricity for whether need be right according to moisture detector 4's detection result control second power supply unit 32 the heating wire supplies power.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. The utility model provides a weeping of function detects cable generates heat in area which characterized in that, weeping detects the cable and includes:

a detection cable body including an induction wire having a conductive outer layer;

a plurality of electric heating wires which are all arranged in the detection cable body, and are insulated and isolated from the induction wires and the plurality of electric heating wires; each electric heating wire comprises a plastic coating layer and an electric heating layer wrapped inside the plastic coating layer, and the electric resistivities of the electric heating layers in the electric heating wires are different.

2. The leakage detection cable with heating function according to claim 1, wherein said electrothermal layer comprises: the conductive layer comprises a first conductive layer, a second conductive layer and a filling layer, wherein the filling layer is positioned between the first conductive layer and the second conductive layer, the filling layer is doped with conductive particles, and the conductive particles are used for forming a conductive path between the first conductive layer and the second conductive layer.

3. The leakage detection cable with the heating function according to claim 1, wherein a bundle-shaped fixing layer is wrapped outside the plastic coating layer.

4. The leakage detection cable with the heating function according to claim 3, wherein the beam-shaped fixing layer is wrapped with a shielding layer.

5. The heating-function-equipped leak detection cable according to claim 4, wherein the shielding layer is externally wrapped with a protective layer.

6. A leak detection system, comprising:

the leakage detection cable with the heating function according to any one of claims 1 to 5;

the first power supply device is electrically connected with the detection cable body to form an electric loop for detecting leakage;

and the second power supply device is electrically connected with a selected one of the plurality of electric heating wires to form an electric loop for continuously heating.

7. The leak detection system of claim 6, wherein said second power supply means includes an output power adjustment module for adjusting a parameter of power supplied to said heater wire.

8. The leak detection system as defined in claim 6 or 7, further comprising:

the humidity detector is used for detecting an environment humidity parameter;

and the input end of the controller is electrically connected with the humidity detector, and the output end of the controller is electrically connected with the second power supply device and used for controlling whether the second power supply device needs to supply power to the electric heating wire or not according to the detection result of the humidity detector.

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