CN211284734U - Liquid leakage sensor fabric - Google Patents
Liquid leakage sensor fabric Download PDFInfo
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- CN211284734U CN211284734U CN201921428105.1U CN201921428105U CN211284734U CN 211284734 U CN211284734 U CN 211284734U CN 201921428105 U CN201921428105 U CN 201921428105U CN 211284734 U CN211284734 U CN 211284734U
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- 239000004744 fabric Substances 0.000 title claims abstract description 182
- 239000007788 liquid Substances 0.000 title claims abstract description 46
- 238000002955 isolation Methods 0.000 claims description 23
- 239000012530 fluid Substances 0.000 claims description 11
- 238000010292 electrical insulation Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000002759 woven fabric Substances 0.000 claims 2
- 210000000746 body region Anatomy 0.000 claims 1
- 238000010923 batch production Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000000523 sample Substances 0.000 description 4
- 238000011282 treatment Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000009795 derivation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model provides a liquid leakage sensor fabric, wherein conductive weft yarns are woven in a fabric main body at intervals, and conductive warp yarns are woven in a selvedge area at one side of the fabric; the one-side selvage area comprises an upper layer of warp and a lower layer of warp, the conductive warp is positioned in the upper layer of warp and separated by the non-conductive warp, and the conductive warp is provided with 2NRoot of, whereinNIs a positive integer, and is divided into inner and outer 2 groups, each groupNA root; every 2 conductive weft yarns are in a cycle, and the first conductive weft yarn is electrically conductive with a group of conductive warp yarnsAnd simultaneously electrically insulating the other set of conductive warp yarns by passing the conductive weft yarn under at least 3 non-conductive warp yarns around the conductive warp yarns, and repeating the steps in which the second conductive weft yarn is opposite to the first conductive weft yarn. The utility model discloses convenient to use can be tailor wantonly, and can conveniently realize batch production.
Description
Technical Field
The utility model relates to a liquid leakage sensor fabric belongs to weaving technique and sensor technical field.
Background
At present, some liquid leakage sensors exist in the market, and can be applied to liquid leakage detection in machine rooms, smart homes and the like. The sensor works by utilizing the conductive characteristic of liquid, the main part is a probe with two electrodes, and the probe is placed in a region where liquid leaks and then flows through to realize detection during working. A disadvantage of this type of sensor is that the liquid leakage must be of a certain amount to achieve the effect of simultaneously immersing both electrodes of the probe. However, for special situations, such as the transportation of chemically contaminated liquids, dripping may occur at the flange joint of the pipeline, and leakage detection may occur by using a probe type leakage sensor.
The inventor's chinese invention patent No. 201610107158.8 entitled "water drop sensor fabric and method for producing the same" provides a water drop sensor fabric, which realizes detection in a large area with few water drops and uncertain position, and can adapt to various shapes and environments because of its flexibility, and can realize detection of trace liquid leakage by placing it under the flange or directly wrapping it outside the flange. However, the sensor fabric has some defects, firstly, the lead-out electrodes are respectively arranged at two sides of the fabric, so that the sensor fabric cannot be cut along the warp direction in use, and the marketable product of the sensor fabric needs to be customized, so that the application range of the sensor fabric is limited; secondly, other treatments are needed after the fabric is woven in the production of the fabric, so that the processing efficiency is low; finally, two small clamps are needed to clamp two sides of the fabric respectively during signal output of the fabric, the fabric is inconvenient to use, and if the fabric can be manufactured to obtain signals only by clamping one side of the fabric by the small clamps, the fabric can be used conveniently greatly.
SUMMERY OF THE UTILITY MODEL
Therefore, the liquid leakage sensor fabric which is directly woven and can be used only by clamping one side of the fabric by a small clamp is researched and manufactured, the production efficiency, the applicability and the convenience in use are greatly improved, and the market prospect is wide.
Therefore, the utility model aims to provide a liquid leakage sensor fabric to overcome the sensor fabric that detects trace liquid leakage among the prior art and exist can not tailor along the warp direction, the fabric is woven into the back and still need do other processings, and because need two little clips to clip the fabric both sides respectively during output signal and lead to using defects such as inconvenient.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
according to the utility model discloses a first aspect, a liquid leakage sensor fabric, including crossing warp and woof perpendicularly, warp, woof all have two kinds electrically conductive and non-conductive, and non-conductive woof interweaves with non-conductive warp and forms the fabric main part, and electrically conductive woof is woven at the interval and is established in the fabric main part, and electrically conductive warp is woven and is established in one side selvedge district of fabric; the one-side selvage area comprises an upper layer of warp and a lower layer of warp, the conductive warp is positioned in the upper layer of warp and separated by the non-conductive warp, and the conductive warp is provided with 2NRoot of, whereinNIs a positive integer, and is divided into inner and outer 2 groups, each groupNA root; every 2 conductive weft yarns are in a cycle, the first conductive weft yarn is in contact with and electrically conducted with one group of conductive warp yarns and is isolated and electrically insulated from the other group of conductive warp yarns, the isolation and the electrical insulation are realized by the conductive weft yarn passing through the lower part of at least 3 non-conductive warp yarns around the conductive warp yarns, and the contact or isolation of the second conductive weft yarn and the conductive warp yarns is opposite to that of the first conductive weft yarn.
Preferably, theNIs a positive integer of 1-10. More preferably, theNIs a positive integer of 2-5.
Furthermore, the liquid leakage sensor fabric further comprises a plurality of non-conductive covering weft yarns, wherein the non-conductive covering weft yarns are positioned above the conductive weft yarns in the cloth body area of the fabric to form a structure in which the upper parts of the conductive weft yarns are covered by the non-conductive covering weft yarns; or the non-conductive covering weft yarns are positioned below the conductive weft yarns in the cloth body area of the fabric to form a structure in which the lower parts of the conductive weft yarns are covered by the non-conductive covering weft yarns.
Further, the non-conductive cover weft yarns are woven into the fabric in a manner that the conductive weft yarns are woven in first and then the non-conductive cover weft yarns are woven in.
According to the second aspect of the utility model, a liquid leakage sensor fabric, including the warp and the woof that intersect perpendicularly, warp, woof all have two kinds of electrically conductive and non-conductive, and non-conductive woof interweaves with non-conductive warp and forms the fabric main part, and electrically conductive woof is woven at the interval and is established in the fabric main part, and electrically conductive warp is woven and is established in one side selvedge district of fabric; the one-side selvage area comprises an upper layer of warp and a lower layer of warp, the conductive warps are all positioned in the lower layer of warp and are separated by the non-conductive warps, and the conductive warps are provided with 2NRoot of, whereinNIs a positive integer, and is divided into inner and outer 2 groups, each groupNA root; every 2 conductive weft yarns are in a cycle, the first conductive weft yarn is in contact with and electrically conducted with one group of conductive warp yarns and is isolated and electrically insulated from the other group of conductive warp yarns at the same time, the isolation and the electrical insulation are realized by the conductive weft yarn passing through the upper part of at least 3 non-conductive warp yarns around the conductive warp yarns, and the contact or isolation of the second conductive weft yarn and the conductive warp yarns is opposite to that of the first conductive weft yarn.
Preferably, theNIs a positive integer of 1-10. More preferably, theNIs a positive integer of 2-5.
Furthermore, the liquid leakage sensor fabric further comprises a plurality of non-conductive covering weft yarns, wherein the non-conductive covering weft yarns are positioned above the conductive weft yarns in the cloth body area of the fabric to form a structure in which the upper parts of the conductive weft yarns are covered by the non-conductive covering weft yarns; or the non-conductive covering weft yarns are positioned below the conductive weft yarns in the cloth body area of the fabric to form a structure in which the lower parts of the conductive weft yarns are covered by the non-conductive covering weft yarns.
Further, the non-conductive cover weft yarns are woven into the fabric in a manner that the conductive weft yarns are woven in first and then the non-conductive cover weft yarns are woven in.
According to the utility model discloses a third aspect, a liquid leakage sensor fabricThe fabric comprises warp yarns and weft yarns which are vertically crossed, wherein the warp yarns and the weft yarns are both conductive and non-conductive, the non-conductive weft yarns and the non-conductive warp yarns are interwoven to form a fabric main body, the conductive weft yarns are woven in the fabric main body at intervals, the conductive warp yarns are woven in fabric edge areas on two sides of the fabric, each fabric edge area comprises an upper layer of warp yarns and a lower layer of warp yarns, and the conductive warp yarns in each fabric edge area are provided with 2NRoot of, whereinNAre positive integers, are all positioned in the upper layer of warps and are separated from each other by non-conductive warps, the conductive warps of each side edge area are divided into an inner group and an outer group, each group is composed of 2 groupsNA root; every 2 conductive weft yarns are in a cycle, the first conductive weft yarn is respectively contacted with one group of conductive warp yarns in each side of conductive warp yarns and is electrically conducted, and is mutually isolated and electrically insulated from the other group of conductive warp yarns in each side of conductive warp yarns, the mutual isolation and the electric insulation are realized by the conductive weft yarn passing through the lower part of at least 3 non-conductive warp yarns around the conductive warp yarns, and the contact or isolation condition of the second conductive weft yarn and the conductive warp yarns is opposite to that of the first conductive weft yarn.
Preferably, theNIs a positive integer of 1-10. More preferably, theNIs a positive integer of 2-5.
Furthermore, the liquid leakage sensor fabric also comprises a plurality of non-conductive covering weft yarns, and the non-conductive covering weft yarns are positioned above the conductive weft yarns in the cloth body area of the fabric to form a structure in which the upper parts of the conductive weft yarns are covered by the non-conductive covering weft yarns; or the non-conductive covering weft yarns are positioned below the conductive weft yarns in the cloth body area of the fabric to form a structure in which the lower parts of the conductive weft yarns are covered by the non-conductive covering weft yarns.
Further, the non-conductive cover weft yarns are woven into the fabric in a manner that the conductive weft yarns are woven in first and then the non-conductive cover weft yarns are woven in.
According to a fourth aspect of the present invention, a liquid leakage sensor fabric comprises vertically intersecting warps and wefts, wherein both the warps and wefts are electrically conductive and electrically non-conductive, the electrically non-conductive wefts and the electrically non-conductive warps are interwoven to form a fabric main body, and the electrically conductive wefts are woven in the fabric main body at intervals; the conductive warp yarns are woven in the selvage areas on both sides of the fabric, each sideThe selvage area comprises an upper layer of warp and a lower layer of warp, and the conductive warp of each selvage area is provided with 2NRoot of, whereinNAre positive integers, are all positioned in the lower layer of warp yarns and are separated from each other by non-conductive warp yarns, the conductive warp yarns in each side edge area are divided into an inner group and an outer group, each group isNA root; every 2 conductive weft yarns are in a cycle, the first conductive weft yarn is respectively contacted with one group of conductive warp yarns in each side of the conductive warp yarns and is electrically conducted, and is mutually isolated and electrically insulated from the other group of conductive warp yarns in each side of the conductive warp yarns, the mutual isolation and the electrical insulation are realized by the conductive weft yarn penetrating through the upper parts of at least 3 non-conductive warp yarns around the conductive warp yarns, and the contact or isolation condition of the second conductive weft yarn and the conductive warp yarns is opposite to that of the first conductive weft yarn.
Preferably, theNIs a positive integer of 1-10. More preferably, theNIs a positive integer of 2-5.
Furthermore, the liquid leakage sensor fabric also comprises a plurality of non-conductive covering weft yarns, and the non-conductive covering weft yarns are positioned above the conductive weft yarns in the cloth body area of the fabric to form a structure in which the upper parts of the conductive weft yarns are covered by the non-conductive covering weft yarns; or the non-conductive covering weft yarns are positioned below the conductive weft yarns in the cloth body area of the fabric to form a structure in which the lower parts of the conductive weft yarns are covered by the non-conductive covering weft yarns.
Further, the non-conductive cover weft yarns are woven into the fabric in a manner that the conductive weft yarns are woven in first and then the non-conductive cover weft yarns are woven in.
According to the utility model discloses a fifth aspect, a liquid leakage sensor fabric, including crossing warp and woof perpendicularly, warp, woof all have electrically conductive and non-conductive two kinds, and non-conductive woof interweaves with non-conductive warp and forms the fabric main part, and electrically conductive woof interval is knitted and is established in the fabric main part, and electrically conductive warp is knitted and is established in the both sides selvedge district of fabric, and every side selvedge district includes upper and lower two-layer warp, and the electrically conductive warp in every side selvedge district is provided with 2NRoot of, whereinNAre positive integers and are separated from each other by non-conductive warp yarns, wherein the conductive warp yarns of one side edge area are all positioned in the upper layer warp yarns and are divided into an inner group and an outer group, each group isNThe conductive warps of the edge-covering area on the other side are all positioned in the lower layer warps and are divided into an inner group and an outer group, wherein each group is divided into 2 groupsNA root; every 2 conductive weft yarns are in a cycle, the first conductive weft yarn is respectively contacted with one group of conductive warp yarns in each side of conductive warp yarns and is electrically conducted, and is mutually isolated and electrically insulated from the other group of conductive warp yarns in each side of conductive warp yarns, the mutual isolation and the electric insulation are realized by the conductive weft yarn passing through the lower part of at least 3 non-conductive warp yarns around the conductive warp yarns or passing through the upper part of at least 3 non-conductive warp yarns around the conductive warp yarns, and the contact or isolation condition of the second conductive weft yarn and the conductive warp yarns is opposite to that of the first conductive weft yarn.
Preferably, theNIs a positive integer of 1-10. More preferably, theNIs a positive integer of 2-5.
Furthermore, the liquid leakage sensor fabric also comprises a plurality of non-conductive covering weft yarns, and the non-conductive covering weft yarns are positioned above the conductive weft yarns in the cloth body area of the fabric to form a structure in which the upper parts of the conductive weft yarns are covered by the non-conductive covering weft yarns; or the non-conductive covering weft yarns are positioned below the conductive weft yarns in the cloth body area of the fabric to form a structure in which the lower parts of the conductive weft yarns are covered by the non-conductive covering weft yarns.
Further, the non-conductive cover weft yarns are woven into the fabric in a manner that the conductive weft yarns are woven in first and then the non-conductive cover weft yarns are woven in.
Compared with the prior art, the utility model has the advantages of it is following:
the utility model can be used for detecting the leakage of trace liquid at the pipeline joint, is convenient to use, and only needs to wrap the pipeline joint outside and clamp two groups of conductive warps in the same side cloth edge area by two conductive clamps; in addition, the utility model can be cut at will without affecting the detection function; the fabric can be directly woven and can be used after being woven, and other treatments do not need to be carried out on the fabric, so that the mass production can be conveniently realized once the fabric is put on a loom; higher reliability can be achieved when a plurality of conductive warps are used; by adopting the structure that a plurality of conductive warps are arranged on both sides, the left half part and the right half part can be used after cutting, so that waste is avoided; the mode of covering the conductive weft yarn by the non-conductive weft yarn avoids the malfunction of the sensor caused by the direct contact of the conductive weft yarn and the metal pipeline.
Drawings
Fig. 1 is a schematic structural view of a liquid leak sensor fabric according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the liquid leak sensor fabric shown in FIG. 1 along a first conductive weft yarn;
FIG. 3 is a cross-sectional view of the fluid leak sensor fabric of FIG. 1 along a second conductive weft yarn;
FIG. 4 is a schematic diagram of the operating principle of the liquid leak sensor fabric shown in FIG. 1;
FIG. 5 is a schematic view of the cut-out structure of the liquid leak sensor fabric shown in FIG. 1;
FIG. 6 is a schematic structural view of a liquid leak sensor fabric with conductive warp yarns added and grouped inside and outside according to another embodiment of the present invention;
FIG. 7 is a schematic structural view of a liquid leak sensor fabric according to another embodiment of the present invention with conductive warp yarns added and spaced apart in groups;
FIG. 8 is a schematic structural view of a liquid leakage sensor fabric according to another embodiment of the present invention, wherein conductive warp yarns are disposed on both sides of the fabric;
FIG. 9 is a schematic view of the structure of the remaining portion of the fabric of the liquid leak sensor shown in FIG. 8 after cutting;
FIG. 10 is a cross-sectional view of the addition of a non-conductive cover weft yarn over the second conductive weft yarn shown in FIG. 3.
In the above figures, the conductive warp yarn is located in the selvedge area and has two layers of warp yarns, except for fig. 2 and 3, the warp yarns shown in the figures only refer to the upper warp yarn, and the lower warp yarn is not shown.
Detailed Description
The invention will be further described with reference to specific embodiments. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It should be noted that, in the drawings, the conductive warp yarns are located in the selvedge areas, and there are two layers of warp yarns, except for fig. 2 and 3, the warp yarns shown in the drawings only refer to the upper one, and the lower one is not shown. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a liquid leakage sensor fabric according to an embodiment of the present invention. The fabric body is formed by vertically interweaving a plurality of non-conductive warp yarns 1 and non-conductive weft yarns 2, the conductive weft yarns 201 and 202 are woven into the fabric at intervals, and a plurality of conductive weft yarns are arranged in the warp direction of the whole fabric. At the fabric left selvedge, 2 conductive warp yarns 101, 102 are arranged, which are separated by non-conductive warp yarns. When the first conductive weft yarn 201 is woven, the first conductive weft yarn is normally interwoven with the conductive warp yarn 101, and the first conductive weft yarn and the conductive warp yarn are mutually contacted and electrically conducted; isolated and electrically insulated from the conductive warp yarns 102. The second conductive weft yarn 202 is isolated and electrically insulated from the conductive warp yarn 101 when being woven; and are normally interwoven with the conductive warp yarns 102 to be in contact with each other and electrically conducted. Other conductive weft yarns on the fabric are woven in one by one according to the rules of the conductive weft yarns 201 and 202, so that the conductive warp yarn 101 is conducted with the odd conductive weft yarns, the conductive warp yarn 102 is conducted with the even conductive weft yarns, and the conductive warp yarns 101 and 102 are not conducted with each other normally.
Referring to fig. 2, fig. 2 is a cross-sectional view of the fluid leak sensor fabric of fig. 1 along a first conductive weft yarn, highlighting how the conductive warp and weft yarns are insulated and electrically isolated. The selvage area warp where the conductive warp 101 and the conductive warp 102 are located has two layers, the conductive warp 101 and the conductive warp 102 are both located on the upper layer, and the left, the right and the lower parts of the conductive warp 101 are respectively provided with non-conductive warps 1-1, 1-3 and 1-2 which wrap the conductive warp 101; similarly, conductive warp yarn 102 is wrapped by non-conductive warp yarns 1-3, 1-4, 1-5. When the conductive weft 201 is woven, the conductive weft is normally interwoven with the conductive warp 101, passes through the lower parts of the non-conductive warps 1-3, 1-4 and 1-5, and then is interwoven with the non-conductive warps in the cloth body area. After the conductive weft yarn 201 is woven in, non-conductive weft yarn continues to be woven in and gradually forms a fabric. After the fabric is formed, all warp yarns and weft yarns are close to each other under the action of tension, but as the non-conductive warp yarns 1-3, 1-4 and 1-5 wrap the conductive warp yarn 102, the conductive weft yarn 201 is isolated from and electrically insulated from the conductive warp yarn 102, and is in contact with and electrically conducted with the conductive warp yarn 101.
Referring to fig. 3, fig. 3 is a cross-sectional view of the fluid leak sensor fabric of fig. 1 along a second conductive weft yarn, highlighting the condition where the second conductive warp yarn is conductive or insulative to the conductive warp yarn. When the second conductive weft yarn 202 is woven, it passes under the non-conductive warp yarns 1-1, 1-2, 1-3 and then is normally interwoven with the conductive warp yarn 102. Since the non-conductive warp yarns 1-1, 1-2, 1-3 wrap the conductive warp yarn 101, the conductive weft yarn 202 is isolated and electrically insulated from the conductive warp yarn 101, and is in contact and electrically conducted with the conductive warp yarn 102.
Fig. 2 and 3 only show the case where the conductive warp yarns 101, 102 are both located in the upper layer warp yarns. In addition, both conductive warp yarns 101, 102 may be provided in the lower layer warp yarns. When the conductive warp yarns 101 and 102 are both located in the lower layer warp yarns, the left, right and upper sides of the conductive warp yarn 101 are respectively provided with non-conductive warp yarns which wrap the conductive warp yarn 101; similarly, conductive warp yarn 102 is wrapped by non-conductive warp yarns positioned to the left, right, and above. When the first conductive weft 201 is woven, after being normally interwoven with the conductive warp 101, the first conductive weft passes through the upper parts of the non-conductive warps positioned at the left, right and upper parts of the conductive warp 102 and then is interwoven with the non-conductive warps in the cloth body area. Since the non-conductive warp yarns on the left, right and upper sides of the conductive warp yarn 102 wrap the conductive warp yarn 102, the conductive weft yarn 201 is insulated and electrically insulated from the conductive warp yarn 102, and is in contact with and electrically conducted to the conductive warp yarn 101. The second conductive weft yarn 202 is woven through the conductive warp yarn 101 above the left, right and top non-conductive warp yarns and then normally interwoven with the conductive warp yarn 102. Since the non-conductive warp yarns on the left, right and upper sides of the conductive warp yarn 101 wrap the conductive warp yarn 101, the conductive weft yarn 202 is isolated and electrically insulated from the conductive warp yarn 101, and is in contact and electrically conducted with the conductive warp yarn 102.
Referring to fig. 4, fig. 4 is a schematic view illustrating an operation principle of the fabric for a liquid leakage sensor shown in fig. 1. When water drops 9 exist on the fabric, the non-conductive warp and weft yarns in the area absorb water and become conductive, and the conductive warp yarns 101 and 102 are conducted, so that the conduction path is the conductive warp yarn 101 → the conductive weft yarn 201 → the water drops 9 → the conductive weft yarn 202 → the conductive warp yarn 102. Obviously, in this embodiment, the conductive warp yarns 101 and 102 are used as leading-out electrodes, the conductive weft yarns 201 and 202 are used as detecting electrodes, and whether water drops exist on the cloth surface can be judged according to whether the conductive warp yarns 101 and 102 are conducted or not in use.
Referring to fig. 5, fig. 5 is a schematic view of the cut fabric of the liquid leakage sensor shown in fig. 1. When the fabric in fig. 1 is cut along the fold line AB, the fabric shown in fig. 5 is obtained, and the fabric still has a detection function because the lead-out electrodes, i.e. the conductive warp yarns 101, 102, remain after cutting. The conductive path in the figure is conductive warp 101 → conductive weft 203 → water drop 9 → conductive weft 202 → conductive warp 102.
Referring to fig. 6, fig. 6 is a schematic structural view of a liquid leakage sensor fabric with conductive warp yarns added and grouped inside and outside according to another embodiment of the present invention. When one of the 2 conductive warp yarns of the fabric in fig. 1 is broken, the detection function of the entire fabric is lost, and thus several conductive warp yarns may be provided more. In fig. 6, 4 conductive warp yarns are arranged and located in the selvedge area on the same side of the fabric, and referring to fig. 1 to fig. 3, the warp yarns in the selvedge area have two layers, the conductive warp yarns 101 and 102 are located in the upper layer, and the additional conductive warp yarns 103 and 104 are also located in the upper layer. The 4 conductive warp yarns are divided into an inner group and an outer group, the inner group is conductive warp yarns 102 and 104, and the contact or isolation condition of the newly added conductive warp yarn 104 and the conductive weft yarn is the same as that of the conductive weft yarn 102; the outer group is conductive warp yarns 101 and 103, and the contact or isolation between the newly added conductive warp yarn 103 and the conductive weft yarn is the same as that of the conductive weft yarn 101. During detection, two conductive clamps 8 for signal derivation are used, one is clamped on 101/103, the other is clamped on 102/104, and if the two clamps are conducted, water drops on the cloth surface can be reflected. Thus, even if 1 or two groups of 1 break in 4 conductive warp yarns, the detection function of the whole fabric is not lost, and the reliability in use is increased. However, if the number of conductive warp yarns is further increased, for example, to 6 to 20, that is, 3 to 10 yarns per group, the reliability is further improved. In addition, the structure of the internal and external grouping of the plurality of conductive warps is convenient for signal extraction, and when the conductive clamp is used for clamping the corresponding conductive warps, the probability of clamping is high if the number of the conductive warps is large. However, the more the conductive warp yarns are, the higher the added cost is, and since the conductive warp yarns are more costly than ordinary yarns, the number of conductive warp yarns is preferably 10 or less.
In other embodiments of the present invention, the 4 conductive warp yarns in fig. 6 may be disposed in the lower layer warp yarns, so as to perform the same function.
Next, referring to fig. 7, fig. 7 is a schematic structural view of a liquid leakage sensor fabric with conductive warps added and separated into groups according to another embodiment of the present invention. The conductive warp yarns 105, 102 are shown as a group, in contact with and conductive with the even-numbered conductive weft yarns, and isolated and insulated from the odd-numbered conductive weft yarns; similarly, the conductive warp yarns 106, 101 are another group, and are in contact with and in conduction with the odd-numbered conductive weft yarns, and are isolated and insulated from the even-numbered conductive weft yarns. Although the structure can prevent the functional failure caused by the breakage of a single conductive warp, the signal is not convenient to be led out, when the two conductive clamps 8 are used for clamping, as the clamps are conductive, 105 and 101 are easily conducted, and 105 is connected with 102, the two clamps are also conducted, so that even if no water drops exist on the cloth surface, the two clamps can be conducted mutually, and the misoperation is formed. In this case, the problem can be solved by using a plurality of clamps with smaller areas, but the clamps are more troublesome to manufacture and use.
As can be seen from fig. 6 and 7, the plurality of conductive warp yarns are divided into two groups, i.e., an inner group and an outer group, each group is in contact with or isolated from the conductive weft yarns according to the same rule, and the groups cannot be separated from each other as shown in fig. 7 because the signal extraction is inconvenient.
Referring to fig. 8, fig. 8 is a schematic structural view of a liquid leakage sensor fabric according to another embodiment of the present invention, in which conductive warps are disposed on both sides of the fabric. The fabric in fig. 1 and 6 can be cut for use, but only the part containing the leading-out electrode, namely the conductive warp yarn, namely the left half part and the right half part have no detection function because the leading-out electrode is not arranged, and the fabric can only be discarded in use, so that a certain degree of waste is caused. Fig. 8 is provided with 4 conductive warp yarns, the left sides are still 101 and 102, both of which are located in the upper layer warp yarns, the right sides are conductive warp yarns 111 and 112, the right fabric edge area is also provided with upper and lower layers of warp yarns, both of the conductive warp yarns 111 and 112 are located in the upper layer warp yarns, the contact or isolation condition of the conductive warp yarn 111 and the conductive weft yarn is the same as 101, and the contact or isolation condition of the conductive warp yarn 112 and the conductive weft yarn is the same as 102. When the first conductive weft 201 is woven, the first conductive weft is respectively and normally interwoven with the left conductive warp 101 and the right conductive warp 111, so that the first conductive weft is contacted and electrically connected with the left conductive warp 102 and the right conductive warp 112, and is isolated and electrically insulated from the left conductive warp 102 and the right conductive warp 112 in a mode of wrapping the conductive warp by the non-conductive warp; the second conductive weft 202 is opposite to the first conductive weft 201, i.e. contacts and electrically connects with the left conductive warp 102 and the right conductive warp 112, and is isolated and electrically insulated from the left conductive warp 101 and the right conductive warp 111 by wrapping the conductive warp with the non-conductive warp. In this way, the conductive warps 101 and 102 are left leading-out electrodes, and the conductive warps 111 and 112 are right leading-out electrodes, so that when the fabric is used, whether water drops exist on the surface of the fabric can be judged only according to whether the leading-out electrode on one side is conducted, namely whether the conductive warps 101 and 102 or the conductive warps 111 and 112 are conducted. When the fabric is cut, the left half part is the fabric in fig. 5, which can be used normally; the right half is the fabric of fig. 9 and still can be used normally.
In order to increase the reliability in use and prevent the loss of detection function caused by the breakage of the conductive warps, the conductive warps on the left and right sides can be increased as shown in figure 6, for example, 8-40 conductive warps are arranged, namely 4-20 conductive warps on each side; each side is divided into two groups, 2-10 groups. Of course, the number of the conductive warps on the left side and the right side can be different, as long as the number of the conductive warps on each side is even.
In some embodiments of the present invention, the 4 conductive warp yarns in fig. 8 may also be all disposed in the lower layer warp yarns. In other embodiments of the present invention, the conductive warp yarns 101, 102 in fig. 8 may be located in the upper layer warp yarns of the left selvedge area, and the conductive warp yarns 111, 112 may be located in the lower layer warp yarns of the right selvedge area; alternatively, conductive warp yarns 101, 102 are in the lower layer warp yarns of the left selvedge area and conductive warp yarns 111, 112 are in the upper layer warp yarns of the right selvedge area.
Obviously, the liquid leakage sensor fabric of the utility model can be cut at will without influencing the use, and the fabric can be directly woven and can be used after being woven, therefore, once the fabric is put on the machine, the fabric can be conveniently produced in batches without other treatments; higher reliability can be achieved when a plurality of conductive warps are used; the structure that a plurality of conductive warps are arranged on two sides is used, the left half part and the right half part can be used after cutting, and waste is avoided.
The utility model discloses a fabric is as liquid leakage sensor, can be used to detect whether liquid leaks take place in the pipe connection department. When the conductive warp yarn clamp is used, only the outer side of a pipeline joint is required to be wrapped, and two groups of conductive warp yarns in the cloth edge area on the same side are respectively clamped by two conductive clamps.
However, when the pipeline is a metal pipeline, the conductive weft yarn in the fabric cloth body area is in contact with the metal pipeline and is electrically conducted, and at the moment, the sensor fabric has false operation, so that the detection is inaccurate. Therefore, a plurality of non-conductive covering weft yarns are further woven into the fabric, and the non-conductive covering weft yarns are positioned above the conductive weft yarns in the fabric body area of the fabric, or the non-conductive covering weft yarns are positioned below the conductive weft yarns in the fabric body area of the fabric, so that a structure that the surface, contacting with the metal pipeline, of the conductive weft yarns is covered by the non-conductive covering weft yarns is formed. The non-conductive covering weft yarn is utilized to cover the conductive weft yarn positioned in the fabric body area, so that the direct contact between the conductive weft yarn and the metal pipeline can be avoided, and the false operation of the sensor fabric is avoided. Taking the structure shown in fig. 3 as an example, after the conductive weft yarn 202 is woven, a non-conductive covering weft yarn 212 may be woven next to be located below the conductive weft yarn 202 in the body fabric area, so as to cover the conductive weft yarn 202 in the body fabric area, and the specific structure is shown in fig. 10. Note that production practice shows that the non-conductive covering weft yarn 212 can reliably cover the conductive weft yarn 202 by weaving twice, and the non-conductive covering weft yarn 212 cannot be woven simultaneously according to the interweaving structure of the conductive weft yarn 202, that is, two yarns cannot be woven at a time, because the two yarns may roll and rotate during weaving simultaneously, the conductive weft yarn is exposed.
The above-mentioned mode that utilizes non-conductive woof to cover electrically conductive woof is applicable to the utility model discloses all embodiments have solved the problem that the electrically conductive woof of cloth body district and metal pipeline direct contact take place the sensor malfunction.
The present invention has been disclosed in the foregoing with reference to the preferred embodiments, but it is not intended to limit the present invention, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation schemes fall within the protection scope of the present invention.
Claims (10)
1. The liquid leakage sensor fabric is characterized by comprising warp yarns and weft yarns which are vertically crossed, wherein the warp yarns and the weft yarns are both conductive and non-conductive, the non-conductive weft yarns and the non-conductive warp yarns are interwoven to form a fabric main body, the conductive weft yarns are woven in the fabric main body at intervals, and the conductive warp yarns are woven in a selvedge area on one side of the fabric; the one-side selvage area comprises an upper layer of warp and a lower layer of warp, the conductive warp is positioned in the upper layer of warp and separated by the non-conductive warp, and the conductive warp is provided with 2NRoot of, whereinNIs a positive integer, and is divided into inner and outer 2 groups, each groupNA root; every 2 conductive weft yarns are in a cycle, the first conductive weft yarn is in contact with and electrically conducted with one group of conductive warp yarns and is isolated and electrically insulated from the other group of conductive warp yarns, the isolation and the electrical insulation are realized by the conductive weft yarn passing through the lower part of at least 3 non-conductive warp yarns around the conductive warp yarns, and the contact or isolation of the second conductive weft yarn and the conductive warp yarns is opposite to that of the first conductive weft yarn.
2. A fluid leak sensor fabric comprising vertically intersecting warp and weft yarns, both the warp and weft yarns being electrically conductive and electrically non-conductive, the electrically non-conductiveThe weft yarns and the non-conductive warp yarns are interwoven to form a fabric main body, the conductive weft yarns are woven in the fabric main body at intervals, and the conductive warp yarns are woven in a selvedge area on one side of the fabric; the one-side selvage area comprises an upper layer of warp and a lower layer of warp, the conductive warps are all positioned in the lower layer of warp and are separated by the non-conductive warps, and the conductive warps are provided with 2NRoot of, whereinNIs a positive integer, and is divided into inner and outer 2 groups, each groupNA root; every 2 conductive weft yarns are in a cycle, the first conductive weft yarn is in contact with and electrically conducted with one group of conductive warp yarns and is isolated and electrically insulated from the other group of conductive warp yarns at the same time, the isolation and the electrical insulation are realized by the conductive weft yarn passing through the upper part of at least 3 non-conductive warp yarns around the conductive warp yarns, and the contact or isolation of the second conductive weft yarn and the conductive warp yarns is opposite to that of the first conductive weft yarn.
3. The fluid leak sensor fabric according to claim 1 or 2, wherein the fluid leak sensor fabric is characterized in thatNIs a positive integer of 1-10.
4. The fluid leak sensor fabric of claim 3, wherein the fluid leak sensor fabric is a woven fabricNIs a positive integer of 2-5.
5. A liquid leakage sensor fabric is characterized by comprising warps and wefts, wherein the warps and the wefts are vertically crossed, the warps and the wefts are both conductive and non-conductive, the non-conductive wefts and the non-conductive warps are interwoven to form a fabric main body, the conductive wefts are woven in the fabric main body at intervals, the conductive warps are woven in selvage areas on two sides of the fabric, each selvage area comprises an upper layer of warps and a lower layer of warps, and the conductive warps in each selvage area are provided with 2 partsNRoot of, whereinNAre positive integers, are all positioned in the upper layer of warps and are separated from each other by non-conductive warps, the conductive warps of each side edge area are divided into an inner group and an outer group, each group is composed of 2 groupsNA root; every 2 conductive weft yarns are in a circulation, the first conductive weft yarn is respectively contacted with one group of conductive warp yarns in each side of conductive warp yarns and is electrically conducted, and is simultaneously isolated and electrically insulated from the other group of conductive warp yarns in each side of conductive warp yarns, and the conductive weft yarns are mutually isolated and electrically insulatedThe isolation and electrical insulation is achieved by the conductive weft yarn passing under at least 3 non-conductive warp yarns around the conductive warp yarn, the second conductive weft yarn contacting or isolating the conductive warp yarn as opposed to the first conductive weft yarn.
6. The liquid leakage sensor fabric is characterized by comprising warp yarns and weft yarns which are vertically crossed, wherein the warp yarns and the weft yarns are both conductive and non-conductive, the non-conductive weft yarns and the non-conductive warp yarns are interwoven to form a fabric main body, and the conductive weft yarns are woven in the fabric main body at intervals; the conductive warp is woven in the selvedge areas on two sides of the fabric, each selvedge area comprises an upper layer of warp and a lower layer of warp, and the conductive warp in each selvedge area is provided with 2NRoot of, whereinNAre positive integers, are all positioned in the lower layer of warp yarns and are separated from each other by non-conductive warp yarns, the conductive warp yarns in each side edge area are divided into an inner group and an outer group, each group isNA root; every 2 conductive weft yarns are in a cycle, the first conductive weft yarn is respectively contacted with one group of conductive warp yarns in each side of the conductive warp yarns and is electrically conducted, and is mutually isolated and electrically insulated from the other group of conductive warp yarns in each side of the conductive warp yarns, the mutual isolation and the electrical insulation are realized by the conductive weft yarn penetrating through the upper parts of at least 3 non-conductive warp yarns around the conductive warp yarns, and the contact or isolation condition of the second conductive weft yarn and the conductive warp yarns is opposite to that of the first conductive weft yarn.
7. A liquid leakage sensor fabric is characterized by comprising warps and wefts, wherein the warps and the wefts are vertically crossed, the warps and the wefts are both conductive and non-conductive, the non-conductive wefts and the non-conductive warps are interwoven to form a fabric main body, the conductive wefts are woven in the fabric main body at intervals, the conductive warps are woven in selvage areas on two sides of the fabric, each selvage area comprises an upper layer of warps and a lower layer of warps, and the conductive warps in each selvage area are provided with 2 partsNRoot of, whereinNAre positive integers and are separated from each other by non-conductive warp yarns, wherein the conductive warp yarns of one side edge area are all positioned in the upper layer warp yarns and are divided into an inner group and an outer group, each group isNThe conductive warps of the edge-covering area on the other side are all positioned in the lower layer warps and are divided into an inner group and an outer group, wherein each group is divided into 2 groupsNA root; conducting electricityEvery 2 wefts are a cycle, the first conductive weft is respectively contacted with and electrically conducted with one group of conductive warps in each side of the conductive warps, and is isolated and electrically insulated from the other group of conductive warps in each side of the conductive warps, the isolation and the electrical insulation are realized by the fact that the conductive weft passes below at least 3 non-conductive warps around the conductive warps or passes above at least 3 non-conductive warps around the conductive warps, and the contact or isolation of the second conductive weft and the conductive warps is opposite to that of the first conductive weft.
8. The fluid leak sensor fabric according to any one of claims 5 to 7, wherein the fabric is a woven fabricNIs a positive integer of 1-10.
9. The fluid leak sensor fabric according to any one of claims 1, 2, 5-7, further comprising a plurality of non-conductive cover weft yarns positioned over the conductive weft yarns in the body region of the fabric, forming a structure over the conductive weft yarns that is covered by the non-conductive cover weft yarns; or the non-conductive covering weft yarns are positioned below the conductive weft yarns in the cloth body area of the fabric to form a structure in which the lower parts of the conductive weft yarns are covered by the non-conductive covering weft yarns.
10. The fluid leak sensor fabric of claim 9, wherein the non-conductive cover weft yarns are woven into the fabric such that the conductive weft yarns are woven in first and then the non-conductive cover weft yarns are woven in.
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| CN110512332A (en) * | 2019-08-30 | 2019-11-29 | 盐城工业职业技术学院 | A kind of liquid leakage sensor fabric |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110512332A (en) * | 2019-08-30 | 2019-11-29 | 盐城工业职业技术学院 | A kind of liquid leakage sensor fabric |
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Assignee: Qianxiao Wanqi (Yancheng) Technology Co.,Ltd. Assignor: YANCHENG INSTITUTE OF INDUSTRY TECHNOLOGY Contract record no.: X2023980047353 Denomination of utility model: A liquid leakage sensor fabric Granted publication date: 20200818 License type: Common License Record date: 20231118 |
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| EE01 | Entry into force of recordation of patent licensing contract |