CN110672285A

CN110672285A - Liquid leakage detection device

Info

Publication number: CN110672285A
Application number: CN201910931782.3A
Authority: CN
Inventors: 黄斌; 夏艳; 钱吉裕; 方晓鹏
Original assignee: CETC 14 Research Institute
Current assignee: CETC 14 Research Institute
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-01-10

Abstract

The invention relates to a leakage detection device, which is used for detecting low-conductivity or insulated detected liquid and comprises a soluble salt layer and a detection circuit; the soluble salt layer is formed by salts which can be dissolved in the tested liquid; the detection circuit comprises a detection conductor, a power supply module and an electric signal detection device, wherein the detection conductor consists of two conductors which are placed in parallel and are not communicated in a normal state, and the detection conductor is embedded in the soluble salt layer; the power module and the electric signal detection device are connected in series between the two conductors and used for measuring current between the detection conductors. The invention can accurately detect the leakage condition of low conductivity or insulating liquid.

Description

Liquid leakage detection device

Technical Field

The invention relates to a detection device, in particular to a liquid leakage detection device.

Background

In the electronic industry, liquid media are often used for cooling electronic equipment, and in order to prevent the electronic equipment from being damaged by liquid leakage, the industry has the situation that low-conductivity or non-conductive liquid is used for cooling instead of common conductive liquid. The situation also brings a new problem that the traditional liquid leakage detection device utilizing the electric signal cannot detect the liquid leakage situation, and brings a new hidden danger to the long-time safe operation of equipment. For example, although a liquid leakage detection method and a liquid leakage detection device (application No. 201810364433.3) detect a liquid leakage by detecting the on/off state of a circuit by connecting the circuit of the device with the liquid leakage, the detection device cannot accurately detect the liquid leakage of the insulating liquid or the low conductivity.

Disclosure of Invention

In view of the above-mentioned shortcomings in the prior art, the present invention provides a liquid leakage detection device, which can accurately detect the liquid leakage of low conductivity or insulating liquid.

In order to achieve the purpose, the invention provides the following technical scheme:

a leakage detection device is used for detecting low-conductivity or insulating detected liquid and is characterized by comprising a soluble salt layer and a detection circuit; the soluble salt layer is formed by salts which can be dissolved in the tested liquid; the detection circuit comprises a detection conductor, a power supply module and an electric signal detection device, wherein the detection conductor consists of two conductors which are placed in parallel and are not communicated in a normal state, and the detection conductor is embedded in the soluble salt layer; the power module and the electric signal detection device are connected in series between the two conductors and used for measuring current between the detection conductors.

Further, the detection device also comprises a water absorption isolation layer, and the water absorption isolation layer is wrapped on the outer side of the soluble salt layer.

Further, the water absorption isolation layer is made of water absorption materials.

Furthermore, the detection device also comprises a waterproof isolation layer, wherein the waterproof isolation layer is arranged between the water absorption isolation layer and the soluble salt layer, and through holes are formed in the waterproof isolation layer.

Further, the waterproof isolation layer has a certain thickness and is made of a waterproof material.

Furthermore, a plurality of through holes are uniformly distributed on the waterproof isolation layer at intervals.

Further, the diameter of the through holes is smaller than the diameter of the salt particles in the soluble salt layer.

Furthermore, the detection circuit also comprises a connecting circuit and a signal output module; one side joints of the two conductors of the detection conductor are respectively connected with the connecting circuit; the power supply module and the signal output module are connected with the detection conductor in series through the connecting circuit.

Further, the signal output module is an led lamp, a display screen or a loudspeaker.

Further, the detection conductors are two conductors with arbitrary shapes which are not in contact with each other.

The invention has the beneficial effects that:

the invention can improve the conductivity by dissolving the soluble salt in the leakage of the low conductivity or the insulating liquid, and realize the accurate detection of the leakage of the low conductivity or the insulating liquid. The water-absorbing isolation layer and the waterproof isolation layer can wrap the soluble salt layer and prevent the soluble salt layer from connecting a detection circuit due to the absorption of water vapor in air to cause false alarm.

Drawings

FIG. 1 is a schematic structural diagram of a liquid leakage detection device according to the present invention;

FIG. 2 is a cross-sectional view of the leakage detecting device of the present invention.

Wherein: 1. the water absorption isolation layer 2, the waterproof isolation layer 3, the through hole 4, the soluble salt layer 5, the detection conductor 6, the connection circuit 7, the power module 8 and the signal output module.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the present specification, terms of orientation or positional relationship such as up, down, left, right, inside, outside, front, rear, head, and tail are established based on the orientation or positional relationship shown in the drawings. The corresponding positional relationship may also vary depending on the drawings, and therefore, should not be construed as limiting the scope of protection.

In the present invention, the terms "mounted," "connected," "fixed," and the like are to be understood in a broad sense, and for example, may be fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected or capable of communicating with each other, directly connected, indirectly connected through an intermediate medium, or communicated between two components, or interacting between two components. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

This embodiment describes a leakage detection device, which uses the leakage of low conductivity or insulating liquid to dissolve soluble salt to detect the leakage of low conductivity or insulating liquid.

As shown in fig. 1 and 2, the detection device comprises a water absorption isolation layer 1, a waterproof isolation layer 2, a soluble salt layer 4, a detection conductor 5, a connecting circuit 6, a power supply module 7 and a signal output module 8.

The water absorption isolation layer 1 and the waterproof isolation layer 2 are respectively of an annular cylindrical structure, and the water absorption isolation layer 1 is wrapped outside the soluble salt layer 4 through the waterproof isolation layer 2.

The water absorption isolation layer 1 is made of water absorption materials and used for absorbing water vapor in air to prevent the water vapor from entering the detection device, and meanwhile, leakage liquid is not influenced to enter the detection device.

The waterproof isolating layer 2 is arranged between the water-absorbing isolating layer 1 and the soluble salt layer 4, and the waterproof isolating layer 2 has a certain thickness and is made of a waterproof material. When the water absorption isolation layer 1 is wet due to water vapor absorption, the water absorption isolation layer 1 can be prevented from being in direct contact with the soluble salt layer 4 through the waterproof isolation layer 2. Through holes 3 are uniformly distributed on the waterproof isolation layer 2 and are arranged at intervals, and the diameters of the through holes 3 are smaller than the diameters of salt particles in the soluble salt layer 4, so that the waterproof isolation layer 2 can prevent salts from scattering when the soluble salt layer 4 is stabilized. And the through holes 3 can prevent water vapor in the air from entering the soluble salt layer 4 at the same time of preventing the water-proof isolation layer 2 from entering the soluble salt layer 4, and can ensure that the leakage liquid passing through the water-absorbing isolation layer 1 enters the soluble salt layer 4.

A soluble salt layer 4 is disposed within the water resistant barrier layer 2, the soluble salt layer 4 being comprised of salts that are soluble in the low conductivity or insulating liquid being tested. When the leaked liquid passes through the water absorption isolation layer 1 and the waterproof isolation layer 2 and enters the soluble salt layer 4, the salt of the soluble salt layer 4 is dissolved in the leaked liquid, and the conductivity of the leaked liquid is improved.

The detection conductor 5, the connecting circuit 6, the power module 7 and the signal output module 8 form a detection circuit. The detection conductor 5 consists of two conductors which are placed in parallel and are not communicated under normal state, and the detection conductor 5 is placed in the soluble salt layer 4. When the leakage enters the soluble salt layer 4 and dissolves a certain amount of salt, the leakage is communicated with the two conductors of the detection conductor 5. One side joints of two conductors of the detection conductor 5 are respectively connected with the connecting circuit 6, and the power supply module 7 and the signal output module 8 are connected in series into the connecting circuit 6 through connecting wires and form a series-connection detection circuit with the detection conductor 5. After the two conductors of the detection conductor 5 are communicated, the power supply module 7 supplies power to the whole detection circuit, and the signal output module 8 outputs a signal to the outside after being electrified, so that the liquid leakage condition is shown.

In the embodiment, the detection conductor 5 is directly arranged in the soluble salt of the soluble salt layer 4, so that the detection circuit can be quickly communicated when liquid leakage occurs, an alarm is given, and the damage of the liquid leakage to the electronic equipment is avoided.

In the present embodiment, the detection conductor 5 may be two conductors having any shape and not in contact with each other. The signal output module 8 can be an LED lamp, a display screen, a loudspeaker and other alarm devices.

When the detection device of the embodiment is used for detecting leakage, the part where the water absorption isolation layer 1 is located is placed at a leakage flowing or dropping position.

When the weeping gets into waterproof isolation layer 2 through isolation layer 1 that absorbs water to enter into soluble salt layer 4 by thru hole 3, the weeping dissolves the partly soluble salt in the soluble salt layer 4, the conductivity improves, switch-on two unconnected conductors of detection conductor 5 in the soluble salt layer 4, detection conductor 5, power module 7, signal output module 8 are communicated through connecting circuit 6, power module 7 is the power supply of signal output module 8, signal output module 8 sends detection signal after the circular telegram, carry out the weeping warning.

When the two conductors of the detection conductor 5 are not in contact with each other, the detection circuit keeps an off state, and the signal output module 8 does not act, which indicates that no liquid leakage occurs.

Simultaneously, when the air is moist, the isolation layer 1 that absorbs water absorbs the steam in the air, prevents that steam from passing through thru hole 3 and getting into soluble salt layer 4, and because of absorbing the moist isolation layer 1 that absorbs water of steam avoid with soluble salt layer 4 direct contact through waterproof isolation layer 2, further prevent steam and get into soluble salt layer 4, reducible detection device appears the condition of false alarm because of weing.

While the principles of the invention have been described in detail in connection with the preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing embodiments are merely illustrative of exemplary implementations of the invention and are not limiting of the scope of the invention. The details of the embodiments are not to be interpreted as limiting the scope of the invention, and any obvious changes, such as equivalent alterations, simple substitutions and the like, based on the technical solution of the invention, can be interpreted without departing from the spirit and scope of the invention.

Claims

1. A liquid leakage detection device for detecting a low conductivity or insulating liquid to be detected, characterized in that the detection device comprises a soluble salt layer (4) and a detection circuit; the soluble salt layer (4) is composed of salts which can be dissolved in the liquid to be detected; the detection circuit comprises a detection conductor (5), a power supply module (7) and an electric signal detection device, wherein the detection conductor (5) consists of two conductors which are placed in parallel and are not communicated in a normal state, and the detection conductor (5) is embedded in the soluble salt layer (4); the power supply module (7) and the electric signal detection device are connected between the two conductors in series and used for measuring current between the detection conductors.

2. The leakage detection device according to claim 1, further comprising a water-absorbing isolation layer (1), wherein the water-absorbing isolation layer (1) is wrapped outside the soluble salt layer (4).

3. The leak detection device according to claim 2, wherein the water-absorbing barrier layer (1) is made of a water-absorbing material.

4. The leakage detection device according to claim 2, further comprising a waterproof isolation layer (2), wherein the waterproof isolation layer (2) is disposed between the water-absorbing isolation layer (1) and the soluble salt layer (4), and the waterproof isolation layer (2) is provided with through holes (3).

5. The leak detection device according to claim 4, wherein the waterproof isolation layer (2) has a thickness and is made of a water-impermeable material.

6. The leakage detection device according to claim 4, wherein a plurality of said through holes (3) are uniformly distributed on said waterproof isolating layer (2).

7. The leak detection device according to claim 4, wherein the through-holes (3) have a diameter smaller than the diameter of the salt-like particles in the soluble salt layer (4).

8. The leak detection device according to claim 1, wherein the detection circuit further comprises a connection circuit (6) and a signal output module (8); one side joints of the two conductors of the detection conductor (5) are respectively connected with the connecting circuit (6); the power supply module (7) and the signal output module (8) are connected in series with the detection conductor (5) through the connecting circuit (6).

9. The leak detection device according to claim 8, wherein the signal output module (8) is a led lamp, a display screen or a horn.

10. The leak detection device according to claim 1, wherein the detection conductor (5) is two conductors of arbitrary shapes that do not contact each other.