CN201387735Y

CN201387735Y - Cable for inductively detecting water leakage

Info

Publication number: CN201387735Y
Application number: CN200920130762U
Authority: CN
Inventors: 张志强; 周月辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-13
Filing date: 2009-04-13
Publication date: 2010-01-20
Anticipated expiration: 2019-04-13

Abstract

The utility model relates to a cable for inductively detecting water leakage, which comprises an electricity conducting core 1 and an electricity conducting core outer covering plastic framework 2, wherein two common wires (3, 5) and two induction wires (4, 6) are uniformly would on the outer layer of the plastic framework 2, the induction wire is manufactured through covering electricity conducting macromolecule materials outside alloy wires, the unit length resistance of the alloy wire in the conduction wire can be custom-made, and a common wire is made through covering a layer of plastic materials outside a metallic copper wire or a tin plating copper wire. Four wires are wringed at intervals through taking the plastic framework as a centre. The cable can realize the multiple-point detection of longer distance, has simple structure, is convenient to produce and install, and has the advantages that the cable is reliable, safe and accurate and the like, and is suitable for detecting various water leaking environment.

Description

Leakage inductive detects cable

Technical field

The utility model relates to a kind of leakage inductive and detects cable.

Background technology

Along with information-based, intelligent fast development of building, being equipped with a large amount of electric power in information-based machine room, intelligent mansion carries and signal-transmitting cable, these cables may or leak because of window, running water pipe, fire extinguisher canvas hose, steam heating pipe, air-conditioning pipe isotonic water and cause cable short circuit and signal transmission fault, cause device systems cisco unity malfunction or device damage; Long-term ponding also can cause equipment corrosion or other serious accidents.How accurately finding to leak the place, in time take measures such as maintenance, leak stopping, is the key of the normal operation of assurance equipment.At present domestic more existing simple electric pole type single-point water leakage alarm systems, when near the electrode points water being arranged, the warning system alert notice manager maintenance that dewaters normally moves system restoration.But single-point water leakage alarm system exists following problem: single-point detects, and the position that leaks can not accurately be located; Can't multipoint positioning detect; Electrode is at the easy oxidation and rusting of the environment of humidity; Near ground or the cable a spot of ponding may detect less than.

There is the parallel adhesive tape of a kind of employing that two conductor wires are linked all-in-one-piece water leakage detection line cable in the prior art, can realize that multiple spot detects, but there are problems in the detection cable of this scheme, can not satisfy field requirement, cable such as cable intensity takes up room big etc., and this kind structure is a planar structure, two leads can only be linked, automatic accurate location can not be realized.

The utility model content

The purpose of this utility model is to solve in the prior art water leakage detection line cable intensity can not satisfy field requirement, the cable big problem that takes up room, and proposes a kind of leakage inductive and detects cable.

The further purpose of the utility model also be to solve in the prior art can not automatic accurate location problem.

The further purpose of the utility model also is to solve the following problem that single-point water leakage alarm system exists in the prior art: the position that leaks is inaccurate, can not multipoint positioning detect; Electrode is at the easy oxidation and rusting of the environment of humidity; The a small amount of ponding detection sensitivity in ground is low.

For this reason, the utility model proposes a kind of leakage inductive and survey cable, comprise the line of induction and insulation framework, described insulation framework periphery have a plurality ofly evenly distribute at circumferencial direction, the groove of linear extension in the shape of a spiral along its length, it is that equidistant spiral twisting is done at the center that thereby the described line of induction is positioned in this groove with the plastic cement skeleton, and forming with the skeleton is the bunch wire shape at center.

Further, the utility model also comprises following feature:

The described line of induction is two; Also comprise two common conductor wires, thereby also to be positioned in this groove with the plastic cement skeleton be that equidistant spiral twisting is done at the center to described common conductor wire, forming with the skeleton is the bunch wire shape at center; Two common conductor wires and two lines of induction evenly are twisted on the plastic cement skeleton, and canoe is a single-screw.

Described common conductor wire is that the metallic copper conductor is insulated plastic material outward, and the described line of induction is that alloy wire is outer by conducting polymer composite.

Alloy lead wire in the described line of induction has the resistance per unit length of customization.

Also has conductor wire core in frame center.

Leakage inductive of the present utility model is surveyed cable, not only can realize the warning of multiple spot Distributed localization, the sensing cable can not get rusty, various surface states can be used, use reliable and stable, and adopt skeleton as twining pillar, make two lines of induction can be under the situation that does not need adhesive tape equidistant being arranged in parallel, its intensity and the amount of taking up room all have improvement.

And, the utility model adopts skeleton construction, and lead is around in the skeleton periphery, thereby can twine two lines of induction incessantly, can also add around many conductor wires (for example adding), thereby can play effects such as automatic measurement overall length, the transmission signal of telecommunication around plain conductor; Frame center adds that core can also play the effect of reinforcement.

Description of drawings

Fig. 1 is the utility model embodiment water leakage detection line cable cross sectional representation;

Fig. 2 is the utility model embodiment water leakage detection line cable user mode schematic diagram.

Embodiment

The cross sectional representation of present embodiment water leakage detection line cable is seen Fig. 1, and it comprises single line core 1, and (core is not limited to one; Work the effect of gaining in strength; Can conduct electricity, so that doublely play effects such as transmitting signal), the core 1 outer insulation framework (such as the plastic cement skeleton) 2 that is coated with; Plastic cement skeleton periphery has that four (being not limited to four) evenly distribute at circumferencial direction, the groove of linear extension in the shape of a spiral along its length, groove is respectively applied for places two common wirings (3,5) and two lines of induction, the line of induction (4,6) is formed for the alloy lead wire conducting polymer composite that is covered outward, and the purpose of the conducting polymer composite that is covered outward is in order to prevent that cable from getting rusty; Common wiring is metallic copper lead or the tin-coated copper lead one deck insulation plastic material that is covered outward.Four lines are that equidistant spiral twisting is done at the center with the plastic cement skeleton, and forming with the skeleton is the four twisted wire shapes (being similar twisted shape) at center.

Operation principle is seen Fig. 2, during detection, leakage inductive survey cable a termination alarm controller (be used to send constant current, detect return circuit, judge have or not leakage point and calculate the leakage point position), another termination terminator (be used to connect two lines of

induction

4,6, and connect two

common wirings

3,5).In the line of

induction

4 and 6, pass to constant electric current, when the cable point leaks, water is line of induction short circuit, according to the linear relationship between resistance, voltage, the electric current, controller can calculate the relative position L that leaks,

common wiring

3 and 5 passes to constant electric current in cable, is used for detecting the length (having only the absolute position that could determine short circuit after the length of determining whole cable) and the broken string situation of whole cable, and can do signal when needed and transmit usefulness.Core 1 is used for forming plastic cement skeleton 2, also can doublely play the effect that strengthens tensile strength.

Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.

Claims

1. a leakage inductive detects cable, comprise the line of induction (4,6), it is characterized in that, also comprise insulation framework (2), described insulation framework (2) periphery have a plurality ofly evenly distribute at circumferencial direction, the groove of linear extension in the shape of a spiral along its length, the described line of induction (4,6) is positioned in this groove, thereby is that equidistant spiral twisting is done at the center with the plastic cement skeleton, and forming with the skeleton is the bunch wire shape at center.

2. a kind of leakage inductive as claimed in claim 1 detects cable, and it is characterized in that: the described line of induction (4,6) is two; Also comprise two common conductor wires (3,5), described common conductor wire (3,5) thus also to be positioned in this groove with the plastic cement skeleton be that equidistant spiral twisting is done at the center, forming with the skeleton is the bunch wire shape at center; Two common conductor wires (3,5) and two lines of induction (4,6) evenly are twisted on the plastic cement skeleton, and canoe is a single-screw.

3. a kind of leakage inductive as claimed in claim 2 detects cable, and it is characterized in that: described common conductor wire (3,5) is insulated plastic material outward for the metallic copper conductor, and the described line of induction (4,6) is that alloy wire is outer by conducting polymer composite.

4. a kind of leakage inductive as claimed in claim 2 detects cable, and it is characterized in that: the alloy lead wire in the described line of induction (4,6) has the resistance per unit length of customization.

5, a kind of leakage inductive as claimed in claim 1 detects cable, it is characterized in that: also have conductor wire core (1) at skeleton (2) center.