CN114993503A - Recoverable constant temperature type temperature sensing cable - Google Patents
Recoverable constant temperature type temperature sensing cable Download PDFInfo
- Publication number
- CN114993503A CN114993503A CN202210924463.1A CN202210924463A CN114993503A CN 114993503 A CN114993503 A CN 114993503A CN 202210924463 A CN202210924463 A CN 202210924463A CN 114993503 A CN114993503 A CN 114993503A
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- China
- Prior art keywords
- temperature
- galvanized steel
- recoverable
- sensing cable
- steel wire
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The application discloses a recoverable temperature-fixed temperature-sensing cable applied to the cable field, in the scheme, a first galvanized steel wire coated with an NTC negative resistance material and a terylene single silk screen and a second galvanized steel wire coated with a semiconductor material sleeve are twisted together, when a fire disaster occurs outside and the temperature rises, the NTC negative resistance material is melted and soaked in the terylene single silk screen, at the moment, the first galvanized steel wire and the second galvanized steel wire realize contact connection through the semiconductor material sleeve and the NTC negative resistance material, the temperature-sensing cable is short-circuited, a detection device connected with the temperature-sensing cable detects the change of the electric signal and sends out an alarm to find the fire disaster in time, when the temperature of the temperature-sensing cable is over-high locally, the temperature between an attachment net and an outer sheath rises to form hot air flow from the outer sheath to the attachment net, so that the accumulated heat is dissipated along with hot air, the dust accumulated on the elastic fiber can be ejected out at the moment when the elastic fiber is blown away.
Description
Technical Field
The application relates to the field of cables, in particular to a recoverable constant-temperature sensing cable.
Background
The temperature sensing cable is internally provided with two elastic steel wires, a layer of temperature sensing and insulating material is wrapped outside each steel wire, the two steel wires are in an insulating state in a normal monitoring state, when the ambient temperature rises to a preset action temperature, the temperature sensing material is broken, the two steel wires generate short circuit, and an input module detects a short circuit signal and then generates an alarm. The temperature-sensing cable detector can be used in places such as power stations, substations, cable channels, tunnels, interlayers and conveyor belts, is stable and reliable, and is suitable for fire detection in severe environments.
The recoverable temperature sensing cable is also called as an analog quantity temperature sensing cable, the recoverable temperature sensing cable is composed of steel wires insulated by heat-sensitive materials, when the field temperature changes, the resistance between the steel wires changes, when the resistance change reaches a set alarm threshold value, a detector sends out a fire alarm signal, after the temperature is reduced, the resistance between the wires recovers to a normal value, and the performance is recovered, namely the recoverable temperature sensing cable.
The existing temperature sensing cables are mostly used in relatively severe environments, in the environments, stains such as muddy water and the like are easily generated on the surfaces of the temperature sensing cables, the stains can influence the dissipation of heat generated when the temperature sensing cables work normally and the supervision of the temperature sensing cables on the environmental temperature monitoring, further the detection accuracy of the temperature sensing cables is influenced, the phenomenon of false alarm or normal alarm failure is caused, and serious potential safety hazards are generated.
Disclosure of Invention
The application aims to reduce the influence of stains generated in the external environment on the normal work of the temperature sensing cable, compared with the prior art, the recoverable constant-temperature sensing cable is provided, the NTC negative resistance material is coated on the outer side of a first galvanized steel wire, the polyester single-wire net is coated on the outer side of the NTC negative resistance material, the semiconductor material sleeve is coated on the outer side of a second galvanized steel wire, the first galvanized steel wire and the second galvanized steel wire are twisted together to form a temperature sensing wire harness, an aluminum-plastic composite belt is wound on the outer side of the temperature sensing wire harness, an outer sheath is coated on the outer side of the aluminum-plastic composite belt, a dust cover is sleeved on the outer side of the outer sheath and comprises a plurality of fixing rings, an attachment net is fixedly connected between every two adjacent fixing rings, one end, far away from the outer sheath, of the attachment net is fixedly connected with a plurality of elastic fibers, the plurality of elastic fibers are in a three-dimensional spiral shape, and adjacent elastic fibers are wound together to form a three-dimensional space structure, elastic fiber chooses for use the high heat conduction material to make, realizes being difficult for influencing the produced giving off of temperature sensing cable normal during operation, can not influence its supervision to ambient temperature control, increases the degree of accuracy that the temperature sensing cable detected, is difficult for arousing the phenomenon of wrong report police or unable normal warning.
Optionally, the fixing ring includes a connecting ring, a positioning ring is fixedly connected to the inner wall of the connecting ring, and the positioning ring directly contacts the outer sheath.
Optionally, one end of the positioning ring, which is close to the connection ring, is provided with a plurality of communication holes, and the plurality of communication holes all penetrate through the positioning ring, so that the conductivity of the heat on the surface of the outer sheath is further increased, and the local heat of the outer sheath is not easily excessively accumulated due to the arrangement of the fixing ring.
Optionally, the one end that the go-between was kept away from to the holding ring has the inward contraction trend, and the one end that the go-between was kept away from to the holding ring is dug there is the frosting line, further increases the joint strength between solid fixed ring and the oversheath for a plurality of solid fixed rings are difficult for slideing on the oversheath, are difficult for influencing the normal use of dust cover.
Optionally, the connecting rings are made of magnetic rubber, the two adjacent connecting rings tend to be attracted, and the adjacent connecting rings can be stacked together in the process of storing and transporting the dust cover, so that the dust cover is convenient to store and transport.
It is optional, elastic fiber includes the hot melt material core, the hot melt material core is close to the one end of adhering to the net and adheres to net fixed connection, the outside cover of hot melt material core is equipped with the outer coating, the conflagration breaks out in the external world, and when lighting up elastic fiber, the high temperature of flame can melt hot melt material core, reduce elastic fiber and adhere to the joint strength between the net, later under the effect of a plurality of windings elastic fiber dead weights together, make elastic fiber from adhering to coming off on the net, slow down stretching of flame on the temperature sensing cable, the working life of extension temperature sensing cable.
Optionally, the softening temperature of the hot-melt material core is higher than the alarm temperature of the first galvanized steel wire, so that the elastic fiber is further not prone to fail in advance.
Optionally, the hot melt material core is adhered to the attachment net after being close to the local melting of the attachment net, and further the hot melt material core can be directly fixed to the attachment net, so that the production of the dust cover is facilitated.
Optionally, the outer coating is made of a hydrophilic material, and further, in a humid environment, water vapor cannot easily penetrate through the elastic fibers to adhere foreign matters to the surface of the outer sheath, so that normal work of the temperature sensing cable cannot be easily influenced.
Optionally, the outer side of the attachment net is provided with a pre-folding line, so that the dust cover can be integrally stored and stacked conveniently.
Compare in prior art, the advantage of this application lies in:
in this scheme, the first galvanized steel wire that has wrapped NTC negative resistance material and dacron single silk screen and the second galvanized steel wire of cladding semiconductor material cover strand together, the conflagration takes place in the external world, when the temperature rose, can cause NTC negative resistance material to melt and dip in the dacron single silk screen, first galvanized steel wire and second galvanized steel wire realize the contact through semiconductor material cover and NTC negative resistance material and are connected this moment, the temperature sensing cable short circuit, the detection device who is connected with the temperature sensing cable can detect the change of above-mentioned signal of telecommunication, and send out the police dispatch newspaper, in time discover the conflagration.
When the temperature of the temperature sensing cable is too high locally, the temperature between the attaching net and the outer sheath rises to form hot air flow from the outer sheath to the attaching net, and a plurality of elastic fibers which are originally in a three-dimensional spiral shape are blown away, so that the accumulated heat is dissipated along with the hot air, and dust accumulated on the elastic fibers is ejected out at the moment when the elastic fibers are blown away, and the elastic fibers are cleaned.
Finally, when a fire disaster occurs outside and the elastic fiber is ignited, the high temperature of the flame can melt the hot-melt material core, the connection strength between the elastic fiber and the attachment net is reduced, then the elastic fiber drops off from the attachment net under the action of the dead weight of the elastic fiber wound together, the spread of the flame on the temperature sensing cable is slowed down, the service life of the temperature sensing cable is prolonged, the softening temperature of the hot-melt material core is higher than the alarm temperature of the first galvanized steel wire, and the elastic fiber is not easy to fail in advance.
Drawings
Fig. 1 is a schematic cross-sectional view of a main structure of a recoverable constant temperature sensing cable according to the present application;
FIG. 2 is a schematic view of the structure at A in FIG. 1;
fig. 3 is a schematic structural view of the constant temperature sensing cable according to the present application after being sleeved with a dust cover;
FIG. 4 is a side cross-sectional view of the dust cap of the present application;
FIG. 5 is a schematic view of the structure at B in FIG. 4;
FIG. 6 is a view of a retaining ring of the present application;
FIG. 7 is a schematic view of a structural variation of the operation of the dust cap of the present application;
FIG. 8 is a schematic view of the operation of the dust cap of the present application;
FIG. 9 is a partial schematic view of the attachment web and elastic fiber junction of the present application;
FIG. 10 is a schematic view of the dust cap of the present application in rolled configuration;
fig. 11 is a schematic view of the winding of the attachment web of the present application.
The reference numbers in the figures illustrate:
11 first galvanized steel wires, 12 second galvanized steel wires, 2 NTC negative resistance materials, 3 terylene single silk screens, 4 semiconductor material sleeves, 5 aluminum-plastic composite belts, 6 outer sheaths, 7 fixing rings, 701 positioning rings, 702 communication holes, 703 connection rings, 8 attachment nets, 9 elastic fibers, 901 hot melt material cores and 902 outer coatings.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments in the present application belong to the protection scope of the present application.
Example 1:
the application discloses but recovery formula is warm type temperature sensing cable surely, please refer to fig. 1-fig. 2, including a pair of first galvanized steel wire 11 and the second galvanized steel wire 12 that matches each other, the outside cladding of first galvanized steel wire 11 has NTC negative resistance material 2, the outside cladding of NTC negative resistance material 2 has dacron single silk screen 3, the outside cladding of second galvanized steel wire 12 has semiconductor material cover 4, first galvanized steel wire 11 and second galvanized steel wire 12 twist each other and form the temperature sensing pencil together, the outside winding of temperature sensing pencil has plastic-aluminum composite tape 5, the outside cladding of plastic-aluminum composite tape 5 has oversheath 6.
Wherein, the first galvanized steel wire 11 of the first galvanized steel wire 11 and the second galvanized steel wire 12 of the second cover of semiconductor material 4 that have wrapped NTC negative resistance material 2 and dacron single silk screen 3 are twisted together, the conflagration takes place in the external world, when the temperature rises, can cause NTC negative resistance material 2 to melt and dip in dacron single silk screen 3, first galvanized steel wire 11 and second galvanized steel wire 12 realize the contact through semiconductor material cover 4 and NTC negative resistance material 2 and are connected this moment, the temperature sensing cable short circuit, the detection device who is connected with the temperature sensing cable can detect the change of above-mentioned signal of telecommunication, and send out the police dispatch newspaper, in time discover the conflagration.
Example 2:
the application discloses a recoverable constant temperature type temperature sensing cable, please refer to fig. 3-10, a dust cover is sleeved on the outer side of an outer sheath 6, the dust cover comprises a plurality of fixing rings 7, an attachment net 8 is fixedly connected between two adjacent fixing rings 7, one end of the attachment net 8 far away from the outer sheath 6 is fixedly connected with a plurality of elastic fibers 9, the elastic fibers 9 are all in a three-dimensional spiral shape, the adjacent elastic fibers 9 are wound together to form a three-dimensional space structure, the elastic fibers 9 are made of high heat conduction material, the fixing rings 7 comprise connecting rings 703, positioning rings 701 are fixedly connected on the inner walls of the connecting rings 703, the positioning rings 701 are in direct contact with the outer sheath 6, one end of the positioning ring 701, which is close to the connecting ring 703, is provided with a plurality of communication holes 702, and the plurality of communication holes 702 all penetrate through the positioning ring 701, so that the conductivity of the surface heat of the outer sheath 6 is increased, and the local heat of the outer sheath 6 is not easily excessively accumulated due to the arrangement of the fixing ring 7.
In particular, in the present solution, in order to show the needs, the structures of the dust cover in the drawings of the present application are not drawn strictly according to actual dimensions, and those skilled in the art can reasonably design according to actual needs.
When the temperature sensing cable normally works, heat generated by the work of the first galvanized steel wire 11 and the second galvanized steel wire 12 can be dissipated to the outside through the elastic fiber 9, foreign matters such as external dust and the like can be isolated to the outside by the elastic fiber 9 and are not easy to be directly adhered to the surface of the outer sheath 6, meanwhile, due to the cutting of the communication hole 702, even if the local part of the elastic fiber 9 is polluted by a large amount of dust, the heat can not be dissipated in time, the heat can also be circulated through the connecting ring 703, the phenomenon that the local temperature of the temperature sensing cable is too high is not easy to occur, when the local part of the temperature sensing cable has the phenomenon that the temperature is too high, the temperature between the attaching net 8 and the outer sheath 6 rises, hot air flow from the attaching net 6 to the attaching net 8 is formed, and a plurality of elastic fibers 9 which originally have a three-dimensional spiral shape is ejected to be dissipated along with hot air, and the dust accumulated on the elastic fibers 9 can also be discharged at the moment that the outer sheath 9 is blown away, the elastic fibers 9 are cleaned.
The end, far away from the connecting ring 703, of the positioning ring 701 has an inward contraction trend, the end, far away from the connecting ring 703, of the positioning ring 701 is provided with frosted grains, the connection strength between the fixing rings 7 and the outer sheath 6 is increased, so that the fixing rings 7 are not prone to sliding on the outer sheath 6 and normal use of the dust cover is not prone to being influenced, the connecting rings 703 are made of magnetic rubber, an adsorption trend exists between every two adjacent connecting rings 703, in the process of storage and transportation of the dust cover, the adjacent connecting rings 703 can be stacked together to facilitate storage and transportation of the dust cover, the elastic fibers 9 comprise hot-melt material cores 901, one end, close to the attachment net 8, of each hot-melt material core 901 is fixedly connected with the attachment net 8, the outer side of each hot-melt material core 901 is sleeved with an outer covering layer 902, when fire occurs outside and the elastic fibers 9 are ignited, the hot-melt material cores 901 by the high temperature of the flame, and the connection strength between the elastic fibers 9 and the attachment net 8 is reduced, afterwards under the effect of a plurality of elastic fiber 9 dead weights of twine together, make elastic fiber 9 drop from adhering to net 8, slow down the stretching of flame on the temperature sensing cable, prolong the working life of temperature sensing cable, the temperature of the softening of hot melt material core 901 is higher than the alarm temperature of first galvanized steel wire 11, make elastic fiber 9 be difficult for losing efficacy in advance, hot melt material core 901 bonds on adhering to net 8 through being close to adhering to net 8 local melting back, can directly with hot melt material core 901 snap-on adhering to net 8, make things convenient for the production of dust cover, hydrophilic material is chooseed for use to outer coating 902, under humid environment, water vapor is difficult for passing elastic fiber 9 and adheres the surface at outer sheath 6 with the foreign matter, be difficult for influencing the normal work of temperature sensing cable, the outside of adhering to net 8 is provided with crease in advance, be convenient for the holistic storage of dust cover to pile up.
The above description is only for the preferred embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art should be covered by the present application in the technical scope disclosed in the present application, and the technical solutions and the modified concepts thereof should be equally replaced or changed within the scope of the present application.
Claims (10)
1. A recoverable temperature-fixed temperature-sensitive cable comprises a pair of first galvanized steel wires (11) and a pair of second galvanized steel wires (12) which are matched with each other, and is characterized in that the outer sides of the first galvanized steel wires (11) are coated with NTC negative resistance materials (2), the outer sides of the NTC negative resistance materials (2) are coated with polyester single silk screens (3), the outer sides of the second galvanized steel wires (12) are coated with semiconductor material sleeves (4), the first galvanized steel wires (11) and the second galvanized steel wires (12) are twisted with each other to form a temperature-sensitive wire harness, the outer sides of the temperature-sensitive wire harness are wound with aluminum-plastic composite belts (5), the outer sides of the aluminum-plastic composite belts (5) are coated with outer sheaths (6), the outer sides of the outer sheaths (6) are sleeved with dust covers, each dust cover comprises a plurality of fixing rings (7), and two adjacent fixing rings (7) are fixedly connected with an attachment net (8), one end, far away from the outer sheath (6), of the attachment net (8) is fixedly connected with a plurality of elastic fibers (9), the elastic fibers (9) are all in a three-dimensional spiral shape, the adjacent elastic fibers (9) are wound together to form a three-dimensional space three-dimensional structure, and the elastic fibers (9) are made of high-heat-conduction materials.
2. The temperature-sensing cable of claim 1, wherein the fixing ring (7) comprises a connecting ring (703), a positioning ring (701) is fixedly connected to an inner wall of the connecting ring (703), and the positioning ring (701) is in direct contact with the outer sheath (6).
3. The temperature-sensing cable of claim 2, wherein the positioning ring (701) has a plurality of communication holes (702) cut at an end thereof adjacent to the connection ring (703), and the plurality of communication holes (702) extend through the positioning ring (701).
4. The recoverable constant temperature-sensitive cable of claim 2, wherein an end of the positioning ring (701) remote from the connection ring (703) has an inward-contracting tendency, and an end of the positioning ring (701) remote from the connection ring (703) is chiseled with frosted lines.
5. The recoverable constant temperature type temperature sensing cable according to claim 4, wherein the connection rings (703) are made of magnetic rubber, and the connection rings (703) have an adsorption tendency.
6. The recoverable constant temperature type temperature sensing cable according to claim 5, wherein the elastic fibers (9) comprise a hot-melt material core (901), one end of the hot-melt material core (901), which is close to the attachment net (8), is fixedly connected with the attachment net (8), and an outer cover (902) is sleeved on the outer side of the hot-melt material core (901).
7. The recoverable constant temperature-sensitive cable according to claim 6, wherein the temperature at which the core (901) of the hot-melt material softens is higher than the alarm temperature of the first galvanized steel wires (11).
8. A recoverable temperature-sensing cable according to claim 6, wherein said core (901) of hot-melt material is bonded to the attachment web (8) by locally melting the portion of the core adjacent to the attachment web (8).
9. The recoverable constant temperature-sensitive cable of claim 6, wherein the outer coating (902) is made of a hydrophilic material.
10. A recoverable constant temperature-sensitive cable according to claim 1, wherein the outer side of the attachment web (8) is provided with pre-creasing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210924463.1A CN114993503B (en) | 2022-08-03 | 2022-08-03 | Recoverable constant temperature type temperature sensing cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210924463.1A CN114993503B (en) | 2022-08-03 | 2022-08-03 | Recoverable constant temperature type temperature sensing cable |
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| Publication Number | Publication Date |
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| CN114993503A true CN114993503A (en) | 2022-09-02 |
| CN114993503B CN114993503B (en) | 2022-11-04 |
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| CN202210924463.1A Active CN114993503B (en) | 2022-08-03 | 2022-08-03 | Recoverable constant temperature type temperature sensing cable |
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| US20080084268A1 (en) * | 2006-10-09 | 2008-04-10 | Weishe Zhang | Unrecoverable line-type temperature sensitive detector having short-circuit fault alarm function |
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| CN114993503B (en) | 2022-11-04 |
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