阅读说明：本技术 漏液检测器及液体传输设备 (Liquid leakage detector and liquid transmission equipment ) 是由 宋成胜 任现文 于 2021-09-14 设计创作，主要内容包括：本申请提供漏液检测器及液体传输设备,漏液检测器包括相互连接的：吸附层,由吸附材料制成,用于吸附漏出的液体并限制所述液体的流动；检测层,设有至少一检测传感器；及变色层,用于与所述漏出的液体接触时发生变色。本申请提供漏液检测器及液体传输设备,能够有效提高漏液检测的准确率,有利于快速发现漏点。(The application provides weeping detector and liquid transmission equipment, the weeping detector includes interconnect: the adsorption layer is made of adsorption materials and is used for adsorbing leaked liquid and limiting the flow of the liquid; the detection layer is provided with at least one detection sensor; and a color changing layer for changing color when contacting the leaked liquid. The application provides weeping detector and liquid transmission equipment, can effectively improve the rate of accuracy that the weeping detected, be favorable to discovering the leak source fast.)

1. A leak detector, comprising, interconnected:

the adsorption layer is made of adsorption materials and is used for adsorbing leaked liquid and limiting the flow of the liquid;

the detection layer is provided with at least one detection sensor; and

and the color changing layer is used for changing color when contacting the leaked liquid.

2. The leak detector according to claim 1, further comprising a protective layer, wherein the adsorption layer, the detection layer, and the color change layer are disposed in a stacked manner on a first side of the protective layer.

3. The leak detector according to claim 2, wherein the protective layer is made of a material having a transparent property.

4. The leak detector of claim 1, wherein the absorbent layer is made of the absorbent material and a lost circulation material, and the lost circulation material is an inorganic gelling material and/or an organic gelling material.

5. The leak detector according to any of claims 1-4, wherein the color change layer changing color comprises at least one of:

electrical signal discoloration occurs when the liquid is contacted with the liquid;

contacting with the liquid to generate chemical reaction color change;

a physical color change reaction occurs upon contact with the liquid.

6. The leak detector according to any one of claims 1-4, wherein the color changing layer is made of a color changing material comprising at least one of: reversible color-changing material and irreversible color-changing material.

7. The leak detector according to claim 2, wherein the absorbent layer, the detection layer, the color changing layer, and the protective layer are fixedly connected by knitting, stapling, or gluing.

8. A leak detector according to any of claims 1 to 4, wherein the leak detector is removably mounted to an external surface of the liquid transfer apparatus.

9. The leak detector according to any one of claims 1 to 4, wherein the leak detector comprises a plurality of detection sensors and a plurality of connection terminals, the detection sensors being detachably connected to the connection terminals in series or in parallel to form a sensor module, the sensor module being connected to a controller of the leak detection system.

10. A liquid transfer apparatus, characterized in that it comprises a leak detector as claimed in any one of claims 1 to 9.

Technical Field

The application relates to the technical field of leakage detection, in particular to a leakage detector and liquid transmission equipment.

Background

With the development of high performance computing, the heat dissipation requirements of servers are more and more urgent. At present, the heat dissipation mode of a server in a machine room generally adopts a liquid cooling heat dissipation mode, the refrigeration efficiency of the liquid cooling heat dissipation mode is far higher than that of an air cooling heat dissipation mode, and meanwhile, the liquid cooling heat dissipation mode can be well controlled in the aspect of noise.

However, in the process of liquid cooling heat dissipation, because the liquid cooling heat dissipation structure is complex, the internal space is narrow, the server and the data have high value and systematicness, and if liquid leaks, the server is easy to damage.

The existing liquid leakage detection method is various, related cooling media can be water, pure water, cooling liquid, fluorinated liquid and the like, the chemical stability of the cooling media is higher and higher, the electric conductivity is lower and lower, the accuracy rate is reduced by adopting a conventional liquid leakage detection method, a leakage point is difficult to find, and the leakage treatment is difficult.

Disclosure of Invention

The application provides weeping detector and liquid transmission equipment, can effectively improve the rate of accuracy that the weeping detected, be favorable to discovering the leak source fast.

In a first aspect, the present application provides a leak detector comprising, interconnected:

the adsorption layer is made of adsorption materials and is used for adsorbing leaked liquid and limiting the flow of the liquid;

the detection layer is provided with at least one detection sensor; and

and the color changing layer is used for changing color when contacting the leaked liquid.

With reference to the first aspect, in a possible implementation manner, the detection device further includes a protective layer, and the absorption layer, the detection layer, and the color changing layer are stacked on a first side of the protective layer.

With reference to the first aspect, in a possible implementation manner, the protective layer is made of a material having a transparent characteristic.

In a possible embodiment in combination with the first aspect, the adsorbent layer is made of the adsorbent material and a lost circulation material, and the lost circulation material is an inorganic gelling material and/or an organic gelling material.

With reference to the first aspect, in a possible embodiment, the color changing layer changes color by at least one of the following methods:

electrical signal discoloration occurs when the liquid is contacted with the liquid;

contacting with the liquid to generate chemical reaction color change;

a physical color change reaction occurs upon contact with the liquid.

With reference to the first aspect, in one possible embodiment, the color changing layer is made of a color changing material including at least one of: reversible color-changing material and irreversible color-changing material.

With reference to the first aspect, in a possible embodiment, the absorption layer, the detection layer, the color changing layer, and the protection layer are fixedly connected by knitting, binding, or gluing.

In a possible embodiment in combination with the first aspect, the leak detector is detachably mounted to an outer surface of the liquid transfer apparatus.

With reference to the first aspect, in a possible implementation manner, the liquid leakage detector includes a plurality of detection sensors and a plurality of connection terminals, the detection sensors are detachably connected with the connection terminals in series or in parallel to form a sensor module, and the sensor module is connected with a controller of the liquid leakage detection system.

In a second aspect, the present application provides a liquid transfer device comprising a leak detector as described above.

The technical scheme of the application has at least the following beneficial effects:

the application provides a weeping detector and liquid transmission equipment, utilize interconnect's adsorbed layer, the weeping detector is constituteed to detection layer and discoloration layer, realize the absorption to the weeping liquid through the adsorbed layer, discoloration layer and liquid contact take place to change colors, make things convenient for the inspector can fix a position the weeping point fast through the colour change after changing colors, shorten the weeping analysis time, and the environmental signal of weeping point can be gathered to the detection sensor in the detection layer, after the environmental signal is received at the controller, can report to the police immediately, improve weeping detection efficiency. Whether leakage occurs or not is judged by combining the feedback of the detection sensor and the feedback of the color changing layer, so that the accuracy of leakage detection can be improved, and the leakage point can be found quickly.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

Fig. 1 is a schematic view illustrating an installation state of a liquid leakage detector according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a liquid leakage detector according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a detection sensor in a liquid leakage detector according to an embodiment of the present application.

Fig. 4a is a schematic view of an arrangement structure of detection sensors in a liquid leakage detector according to an embodiment of the present disclosure.

Fig. 4b is a schematic view of another arrangement structure of the detection sensors in the liquid leakage detector according to the embodiment of the present application.

Fig. 5 is a schematic view of a connection structure of a detection sensor in a liquid leakage detector according to an embodiment of the present application.

Fig. 6 is another schematic structural diagram of a leakage detector according to an embodiment of the present application.

Fig. 7 is another schematic structural diagram of a leakage detector according to an embodiment of the present application.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

For clarity and conciseness of the following description of the various embodiments, a brief introduction to related concepts or technologies is first presented:

time domain reflectometry: the leakage detection is carried out by utilizing the characteristic that signal reflection can occur when electromagnetic waves are transmitted in the electrodes and contact with liquid or other substances, and the leakage position can be positioned and detected by utilizing the characteristics because the signal reflection time is related to the distance of a cable.

Capacitive reactance detection method: the two electrode wires are equivalent to a capacitor, and when a cooling medium flows between the two electrode wires, the dielectric constant between the two electrode wires is changed, so that leakage of the cooling system can be detected. Because the capacitive reactance detection method does not need a cooling medium to be in contact with the electrode wires, and the signals can be sensed only by changing the dielectric constant between the two electrode wires, the electrode wires in the capacitive reactance detection method do not need to be exposed, and do not need to be in direct contact with the cooling medium, and the service life is longer.

Impedance detection method: when the cooling medium is in contact with the two electrode wires at the same time, the two electrode wires are conducted, and the fact that the cooling system is leaked can be judged.

In a first aspect, the present application provides a liquid leakage detector, as shown in fig. 1, wherein the liquid leakage detector 100 is installed on an outer surface of a liquid delivery device 200, and the liquid leakage detector 100 includes an absorption layer 10, a detection layer 30 and a color-changing layer 20 which are connected to each other;

the adsorption layer 10 is made of an adsorption material for adsorbing leaked liquid and restricting the flow of the liquid;

a detection layer 30 provided with at least one detection sensor 31;

the color changing layer 20 is adapted to change color when in contact with the leaked liquid.

In this scheme, utilize interconnect's adsorbed layer, detection layer and discoloration layer to constitute the weeping detector, realize the absorption to the seepage liquid through the adsorbed layer, discoloration layer and liquid contact take place to change colors, make things convenient for the inspector can fix a position the weeping point fast through the colour change after changing colors, shorten the weeping analysis time, and the environmental signal of weeping point can be gathered to the detection sensor in the detection layer, after the environmental signal is received to the controller, can report to the police immediately, improve weeping detection efficiency. Whether leakage occurs or not is judged by combining the feedback of the detection sensor and the feedback of the color changing layer, so that the accuracy of leakage detection can be improved, and the leakage point can be found quickly.

In some embodiments, the liquid transfer device 200 may be a pipe, a pipe joint, a pipe valve, or other devices capable of supplying liquid fluid, and is not limited herein. It can be understood that the liquid transfer device 200, particularly at the joints, is prone to leakage, which tends to damage electronic components and devices, affecting the normal operation of the electronic components and the like.

The adsorption layer 10 includes a first carrier and an adsorbent supported on the first carrier, and the adsorbent is a material capable of restricting the flow of the liquid.

The first carrier may be a fiber woven material, such as a non-woven fabric, a fiber layer, and the like, and the material of the fiber woven material includes at least one of polyethylene terephthalate (PET), polypropylene (PP), sponge, cotton pulp, wood pulp, bamboo pulp, and straw pulp. It will be appreciated that the first carrier has a porous structure and can store a liquid.

The adsorbing material may be at least one of high molecular water absorbent resin, polyethylene terephthalate (PET), polypropylene (PP), sponge, cotton pulp, wood pulp, bamboo pulp, and straw pulp. The adsorbing material can adsorb liquid leaked from a leakage point of the liquid transmission equipment in time, and limit the liquid flow or reduce the liquid flow and diffusion speed. In specific application, the adsorbing material can be subjected to molding, proportioning or composite use in different shapes according to detection requirements and liquid characteristics, and the adsorption efficiency of the adsorbing material is improved.

The adsorption method of the adsorbent may be chemisorption or physisorption, and chemisorption is a chemical action between the adsorbent and the substance to be adsorbed, and a chemical bond is generated to cause adsorption, and many chemisorptions are irreversible. Physical adsorption refers to adsorption between an adsorbing material and an adsorbed substance by intermolecular van der waals force, and most of the physical adsorption is reversible adsorption. In this embodiment, the adsorption method of the adsorbent is preferably physical adsorption. The sorption material may also be, for example, a material having a porous or capillary structure, such as PET powder, PP mesh, PP foam, etc., which is capable of adsorbing the permeated liquid by capillary forces.

Adsorbing material can be through weaving, gluing mode loading on first carrier to fix adsorbing material on first carrier, avoid adsorbing material to rock, drop. Of course, the first carrier may also have a receiving chamber, in which the sorption material is filled. In some embodiments, the adsorbing material may be uniformly loaded on the first carrier, or may be loaded on the first carrier at intervals, which is not limited herein.

The adsorption direction of the adsorption material can be divided into vertical adsorption or horizontal adsorption, the vertical adsorption refers to an adsorption path which is vertical relative to the flowing direction of the liquid, and the vertical adsorption can enable the liquid to reach the color-changing material as soon as possible, so that the color-changing material is contacted with the liquid to generate a color-changing reaction. It is understood that vertical adsorption can increase adsorption rate and adsorption capacity. Horizontal adsorption refers to an adsorption path parallel to the flowing direction of liquid, and the horizontal adsorption can enable the liquid to be diffused as soon as possible, so that the liquid is prevented from being gathered at a certain position, the stability of the detection sensor is reduced, the detection sensitivity of the detection sensor can be effectively enhanced, and missing or late detection caused by high-humidity false detection or the fact that the detection sensor is not contacted with the liquid is avoided.

In other embodiments, the adsorbent layer 10 is made of an adsorbent material and a lost circulation material. For example, a lost circulation material may be supported on the first carrier, the lost circulation material being a cementitious material, which may be an inorganic cementitious material and/or an organic cementitious material. The gelled material is a substance which is changed into a solid from a slurry under the physical and chemical actions. In some specific embodiments, the inorganic cementitious material may be cement, and in particular may be portland cement, aluminate cement, sulphoaluminate cement, or the like; the organic cementing material can be polysulfone, polyethersulfone, adhesive and the like.

It will be appreciated that the lost circulation material in the absorbent layer 10 is capable of performing a lost circulation process in the event that the pressure at the leak point of the fluid transfer device is low. In this embodiment, the mass ratio of the adsorbing material and the plugging material in the adsorbing layer is not limited, and the types and the ratios of the adsorbing material and the plugging material in the adsorbing layer can be adjusted according to the actual application environment, so long as the functions of storing liquid and plugging can be realized. By adding the plugging material, the reaction and treatment time can be given to maintenance personnel, and the loss is prevented from being enlarged.

The color changing layer 20 is made of a color changing material including at least one of: reversible color-changing material and irreversible color-changing material.

When the liquid transmission equipment 200 leaks, the color changing layer 20 can perform color changing reaction, so that the local color of the leakage detector changes, the maintainer can quickly find a leakage point, the position of the leakage point is marked, and quick positioning is realized.

The color-changing material can be divided into electric signal color changing, chemical reaction color changing and physical color changing according to the color changing principle.

The electric signal color change means that the color change occurs after the color change material is conductive. Specifically, the color-changing material can be an LED lamp bead, the LED lamp bead is connected with the detection sensor in series, when liquid leakage occurs, the circuit is conducted, and the LED lamp bead is lightened to change color. Understandably, maintenance personnel can find the leakage point quickly after the lamp beads are lightened. In this embodiment, the LED lamp bead is a low power lamp bead.

The chemical reaction discoloration means that the color-changing material is in contact with liquid to generate chemical reaction and color change. Specifically, the color-changing material may be an acid-base color-changing material, a color-changing ink, a material capable of producing fluorescent characteristics. In some embodiments, the color-changing material may be cobalt chloride, inorganic copper sulfate salt, organic copper sulfate salt, etc., and when contacting the leaked liquid, the color-changing material reacts with the liquid to form a hydrate and undergo a color change. In still other embodiments, the color changing material can also be an acid indicator or a base indicator, such as phenolphthalein, methyl orange, litmus, and the like, attached to a support that can undergo a specific acid-base color change upon contact with a liquid. In other embodiments, the color-changing material may also be a material that exhibits a color change after reacting with a leakage liquid with fluorescent characteristics, and specifically may be a peroxide (e.g., calcium peroxide, hydrogen peroxide) and an ester compound (e.g., fluorescein). The color-changing material can also be a color-changing ink material which can change color when meeting liquid containing water, ethylene glycol, propylene glycol and the like, and the color-changing material can be positioned on site through the color development or color fading change of the color-changing ink when contacting leakage liquid.

The physical color change reaction means that the color change material is in diffusion and permeation after being contacted with liquid and generates color change. Illustratively, the color-changing material may be color-changing paper, two surfaces of which have different colors, and when the color-changing paper is contacted with the leakage liquid, the leakage liquid penetrates or penetrates the color-changing paper with the pigment carried thereon after contacting the pigment surface, thereby displaying a different color on the other surface than before contacting the liquid.

In one embodiment, the color-changing layer 20 may include a second carrier and a color-changing material supported on the second carrier. The second carrier can be a fiber woven material, and the material of the fiber woven material comprises at least one of polyethylene terephthalate (PET), polypropylene (PP), sponge, cotton pulp, wood pulp, bamboo pulp and straw pulp. In a specific embodiment, the polypropylene thread and the color-changing material are woven into a whole through a spinning or weaving process. The color-changing material may be attached only to the surface of the second support or may be included in the interior of the second support as long as the color-changing layer 20 contains the color-changing material. In order to improve the accuracy of the detection, the color-changing material is uniformly distributed in the color-changing layer 20. In other embodiments, the color-changing material may be distributed at intervals or locally, for example, the color-changing material or the color-changing layer 20 may be disposed at a position where the liquid delivery device has a high probability of leakage. Illustratively, at the joint of the liquid transfer device, the leakage detector includes an absorbent layer 10 and a color-changing layer 20 which are stacked.

Specifically, the color-changing layer 20 and the absorbent layer 10 may be fixedly connected by knitting, binding, or gluing.

In order to improve the use efficiency of the leakage detector and realize recycling, the color-changing material is a reversible color-changing material. The reversible color-changing material is recovered to an original state under a certain environment after the color-changing material generates a color-changing reaction. For example, when the color-changing material is an LED lamp bead, the detection sensor conducts electricity during liquid leakage, the LED lamp bead is lightened, and after the liquid leakage phenomenon is solved, the LED lamp bead is extinguished, so that reversible color change is realized. By adopting the reversible color-changing material, the leakage detector can be repeatedly used, and the utilization rate is improved.

Further, the detection layer 30 is provided with at least one detection sensor 31, and the detection sensor 31 is used for acquiring an environmental signal and triggering a liquid leakage alarm based on the environmental signal. Specifically, the environment signal comprises at least one of a voltage signal, a current signal and an electromagnetic signal. Illustratively, when the impedance detection method is adopted, the environment signal comprises a voltage signal and a current signal, and the impedance signal is obtained by calculating the voltage signal and the current signal, and whether liquid leakage occurs is judged according to the impedance signal.

Specifically, the material of the detection sensor 31 is selected from one or more alloys of gold, silver, copper, iron, tin, chromium, nickel, and manganese; or, the surface of the detection sensor 31 is provided with a coating, and the material of the coating is selected from one or more alloys of gold, silver, copper, iron, tin, chromium, nickel and manganese.

In some specific embodiments, the detection sensor 31 may specifically be a detection electrode. As shown in fig. 3, the detection electrode may include a first electrode line 311 and a second electrode line 312 that are disposed at an interval, where the first electrode line 311 and the second electrode line 312 may be disposed on a surface of the adsorption layer 10, or embedded in the adsorption layer 10, or partially embedded in the adsorption layer 10, and the other part is exposed outside the adsorption layer 10. When the detection electrode comprises 2 electrode wires, the method can be applied to the scene of detecting leakage by adopting a time domain reflection method and a capacitive reactance detection method. In other embodiments, when the leakage is detected by using the impedance detection method, the detection electrode may include 3 electrode wires, which is not limited herein. It can be understood that when liquid leakage occurs in the liquid transport apparatus, the liquid is in contact with the first electrode line 311 and the second electrode line 312, and the liquid leakage condition can be detected by using an impedance detection method or a time domain reflection method, and if the liquid flows between the first electrode line 311 and the second electrode line 312, the liquid leakage condition can be detected by using a capacitive reactance detection method.

In order to improve the detection and positioning accuracy of the detection sensor, the detection sensor 31 further includes a coating layer 313, and the coating layer 313 is wrapped on the first electrode line 311 and the second electrode line 312.

Under the mode of capacitive reactance detection, first electrode line 311 of coating 313 parcel and second electrode line 312 can not influence the detection that detects sensor 31, can protect first electrode line 311 and second electrode line 312 not corroded by liquid moreover, improve the life-span that detects sensor 31, and then improve the life-span of weeping detector. Specifically, the material of the wrapping layer 313 may be a polymer material, such as polyethylene terephthalate (PET), Polyethylene (PE), polyvinyl chloride (PVC), and the like. In the process of forming the coating layer on the surface of the detection electrode, a inclusion agent with a specific function can be added into the high polymer material, so that the coating layer has the characteristics of insulation, low dielectric constant, electric conduction or magnetic conduction and the like, thereby keeping the stability and the weather resistance of the detection sensor in liquid leakage and prolonging the service life of the detection sensor 31.

The first electrode wire 311 or the second electrode wire 312 may be a coaxial cable or a flat cable with a coating layer, i.e., the cross-sectional shape may be circular, approximately circular, square, approximately square, prismatic, etc., and is not limited herein. The wire core of the first electrode wire 311 or the second electrode wire 312 may be a single strand electrode wire or a multi-strand electrode wire. For example, the first electrode line 311 may include a core formed by winding 2 copper wires and a cladding layer covering the surface of the core.

In one embodiment, as shown in fig. 4a and 4b, the first electrode lines 311 and the second electrode lines 312 may be arranged along a surrounding direction of the adsorption layer 10, and the first electrode lines 311 and the second electrode lines 312 are arranged along a predetermined geometric shape in a length direction 11 of the adsorption layer 10; the preset geometric shape is at least one of a Z shape, an N shape, an S shape or a N shape, and the preset geometric shape can also be any continuous densely paved pattern. The longitudinal direction 11 of the absorbent layer 10 is the liquid flowing direction of the absorbent layer 10 along the liquid transfer device, and the surrounding direction is the surrounding direction of the absorbent layer 10 when surrounding the liquid transfer device 200.

Fig. 5 is an assembly structure diagram of detection sensors in the liquid leakage detector provided in the embodiment of the present application, and as shown in fig. 5, the liquid leakage detector 100 includes a plurality of detection sensors 31 and a plurality of connection terminals 32, the detection sensors 31 are detachably connected with the connection terminals 32 in a serial or parallel manner to form a sensor module, and the sensor module is connected with a controller. It can be understood that the connection among the plurality of detection sensors can be realized through the connection terminal to form the sensor module.

In order to simplify the structural complexity of the detection sensor and improve the response efficiency of the detection sensor, the sensor module may include a plurality of sensor units 301, and the plurality of sensor units 301 are connected in parallel or in series. Each sensor unit 301 includes a plurality of detection sensors 31, for example, 2 to 3 detection sensors 31 may be connected in parallel through a connection terminal 32 to form one sensor unit 301, and two adjacent sensor units 301 are connected in series through a connection terminal 32. Of course, the detection sensors 31 in the sensor unit 301 may be connected in series, and are not limited herein. In practical application, the number of detection sensors in each sensor unit can be adjusted according to practical conditions.

When two adjacent sensor units 301 are connected by the connection terminal 32, the two sensor units 301 can be connected by matching the extension lines with the connection terminal when the two sensor units 301 are far apart. When the detection sensor 31 is special in structure and inconvenient to connect with the connection terminal 32, the detection sensor 31 is welded with the patch cord, and then the patch cord is connected with the connection terminal 32.

For example, the sensor modules may be arranged in a mesh shape, or may be arranged in a parallel line shape, which is not limited herein. The detachable connection of the detection sensors is realized through the connecting terminals, the convenience of connection can be improved, the application range of the liquid leakage detector is expanded, and the arrangement density and the arrangement mode of the detection sensors in the sensor module can be properly adjusted according to actual use scenes.

In the non-positioning detection scenario, the connection terminals 32 of 2 in and 2 out may be used when the plurality of detection sensors 31 are connected in series. When liquid transmission equipment has branching liquid cooling pipeline, the sensor module can adopt parallel connection including being located the detection sensor on the trunk and being located the detection sensor on the branch road, be located the detection sensor on the trunk and be located the detection sensor on the branch road, and connecting terminal can adopt 2 to advance 4 terminals or two 3 terminals of going out.

Under the location detection scene, adopt parallel connection between the detection sensor that is located the trunk and the detection sensor that is located the branch road, adopt series connection between the detection sensor that is located the branch road, connecting terminal can adopt 3 to advance 6 terminals or two 3 terminal of advancing 3 to adapt to different pipeline requirements, guarantee the quick disconnect of sensor module, also can improve the reliability of sensor module.

The detection layer 30 includes a third carrier and the at least one detection sensor 31 supported on the third carrier. The third carrier may be a fiber woven material having an insulating function, and the material of the fiber woven material includes at least one of polyethylene terephthalate (PET), polypropylene (PP), sponge, cotton pulp, wood pulp, bamboo pulp, and straw pulp. In a specific embodiment, the detection sensor 31 is woven by a spinning or weaving process using polypropylene threads. The detection sensor 31 may be attached only to the surface of the third carrier, or may be sandwiched within the third carrier, as long as the detection layer 30 includes the detection sensor 31. In order to improve the detection accuracy, the detection sensors 31 are uniformly distributed in the detection layer 30. In other embodiments, the detection sensors 31 may be distributed at intervals or locally, for example, the detection layer 30 may be disposed at a position where the liquid transport apparatus has a high probability of leakage, or the distribution density of the detection sensors in the detection layer may be adjusted at a position where the leakage probability is high. Illustratively, the distribution density of the detection sensors at the pipeline of the liquid conveying equipment is 4-7/m, and the distribution density of the detection sensors at the joint accessory of the liquid conveying equipment is 5-10/m.

Specifically, the detection layer 30, the adsorption layer 10, and the color changing layer 20 may be bonded by bonding, stapling, knitting, or the like. As shown in fig. 6, the absorbent layer 10 is positioned at the innermost side, and the color-changing layer 20 and the detection layer 30 are connected in sequence. In other embodiments, the connection order of the adsorption layer 10, the color-changing layer 20 and the detection layer 30 may be arbitrarily adjusted, and is not limited herein.

The spatial arrangement of the detection layer 30 is not limited to the spatial position of other layers, and can be parallel to other layers, or vertical or at a certain angle, so that the detection layer 30 and the adsorption layer 10 can be suitable for different structures, and preferably, the detection layer 30 and the adsorption layer 10 are arranged in a parallel manner.

In still other embodiments, the detection sensor 31 and the color-changing material may be disposed on the same carrier, so that the detection layer 30 and the color-changing layer 20 are integrally molded. The liquid leakage detector has the functions of automatic detection alarm and positioning display, the thickness of the whole liquid leakage detector can be reduced, and the use scene of the liquid leakage detector is widened.

In order to prolong the service life of the liquid leakage detector and widen the use scene of the liquid leakage detector, as shown in fig. 7, the liquid leakage detector further includes a protective layer 40, and the adsorption layer 10, the detection layer 30, and the color changing layer 20 are stacked on a first side of the protective layer 10. The first side refers to the side of the leak detector that is close to the device to be tested, e.g. a liquid transfer device.

It can understand ground, and the protective layer 40 can prevent external magnetic field interference, and the humiture environment causes the influence to the detection function who detects the sensor, can also prevent mechanical damage such as fish tail, snapping in addition, has the function of the inside detection sensor of protection not impaired, and can prevent to a certain extent that liquid from leaking outward, strives for reaction and processing time for maintainer.

In the present embodiment, the color changing layer 20 changes color when it is in contact with liquid, and the color of the color changing layer 20 can be displayed through the protective layer 40. Specifically, the material of the protective layer 40 includes at least one of polyethylene terephthalate, polyethylene, polyamide, modified polyamide, and polyimide. The protective layer 40 may be a flat single-layer sheet-like film or a flat woven mesh. Such as a polyethylene film drawn from polyethylene, or a mesh braid woven from polyethylene filaments.

Alternatively, the protective layer 40 may be made of a material having a transparent property, so that the color of the color-changing layer 20 can be displayed through the protective layer 40.

When the protective layer 40 is an outermost structure, the stacking order of the adsorption layer 10, the discoloration layer 20, and the detection layer 30 may be arbitrarily adjusted, and is not limited herein.

Illustratively, as shown in fig. 7, the liquid leakage detector includes an absorption layer 10, a detection layer 30, a color changing layer 20, and a protection layer 40 connected to each other, and the absorption layer 10, the detection layer 30, the color changing layer 20, and the protection layer 40 are fixedly connected by knitting, stapling, or gluing. During the installation of the liquid leakage detector, the absorbent layer 10 may be wrapped around the outer surface of the liquid delivery device 200, followed by the color changing layer 20, the detection layer 30, and the protection layer 40. The mounting and fixing of the leakage detector may be done by means of an outermost protective layer 40.

The leakage detector 100 is detachably mounted on the outer surface of the liquid transfer apparatus 200 by at least one of a buckle, a magic buckle, a zipper, a band, a buckle, a locking rope, and a protective layer with a self-rolling characteristic. After the liquid leakage detector 100 is installed on the liquid transmission device 200, the installation and the fixation are completed through the detachable connection mode, so that the purposes of quick installation and replacement are achieved.

In some embodiments, the leak detector 100 is mounted to an exterior surface of the fluid delivery device 200, such as directly to a pipe. Alternatively, the leak detector 100 is disposed around the outer surface of the liquid transfer device 200, such as around a valve or a connector. Of course, the leakage detector 100 may be mounted in other ways, and is not limited herein. It should be noted that the liquid leakage detector provided by the present application can be adapted to the liquid transmission device 200 with various structural shapes, and the liquid leakage detector can be designed according to the external configuration of the liquid transmission device, so that the structural consistency between the liquid leakage detector and the liquid transmission device is improved, and the installation flexibility and the detection accuracy can be improved.

When liquid leakage occurs and is contacted with the liquid leakage by the sensor module, the controller receives and analyzes the impedance signal, can analyze impedance change according to preset parameters, and gives an alarm to the liquid leakage detection system software to prompt the liquid leakage after reaching a threshold value; the time of the absorption penetration failure of the leaked liquid can be predicted according to the impedance change rate during the leakage, and the maintenance guidance is given to the working personnel; when positioning detection is adopted, the specific leakage position can be indicated through the distance parameter, so that the problems can be found and solved quickly; in addition, the abnormal conditions of working conditions and set parameters deviating from the threshold value can be detected and warned.

After the maintainer arrives at the scene, the color change can be displayed on the position of the leakage point according to the leakage detector, and the leakage area and whether the conditions of leakage detection and false alarm exist are determined. The maintainer can also carry out maintenance operation according to weeping detecting system software suggestion, can dismantle the detection sensor fast to used repeatedly's weeping detector to extrude the moisture in the weeping detector and reuse after the drying, whether installation back system detectable weeping detector resumes normal condition.

In a second aspect, the present application also provides a liquid transfer device 200, said liquid transfer device 200 comprising the above-described leak detector 100. The fluid transfer device 200 includes, but is not limited to, tubing, fittings, valves, and the like.

The application provides a weeping detector, utilize interconnect's adsorbed layer, the weeping detector is constituteed to detection layer and discoloration layer, realize the absorption to the weeping liquid through the adsorbed layer, discoloration layer and liquid contact take place to change colors, make things convenient for the inspector can fix a position the weeping point fast through the colour change after changing colors, shorten the weeping analysis time, and the environmental signal of weeping point can be gathered to the detection sensor in the detection layer, after the environmental signal is received at the controller, can report to the police immediately, improve weeping detection efficiency. Whether leakage occurs or not is judged by combining the feedback of the detection sensor and the feedback of the color changing layer, so that the accuracy of leakage detection can be improved, and the leakage point can be found quickly.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.