CN214583710U - Temperature-sensing cable for bipolar fire alarm - Google Patents

Abstract

The embodiment of the utility model discloses temperature sensing cable of bipolar fire alarm, concretely relates to temperature sensing cable field, including armor metallic braid layer, armor metallic braid layer's both ends fixed mounting has cable joint, cable joint's a pot head is equipped with the outer loop. The utility model discloses a set up the alloy and decide the temperature line, the tin-plated wire, NTC heat-sensitive insulating layer and oversheath layer, the inner core of cable adopts the alloy material, strand in another conductor by three conductors, and the inner core surface is provided with NTC heat-sensitive insulating layer, better temperature-sensing effect has, then the outside parcel has the polyester band layer in proper order, aluminum-plastic composite strip layer and oversheath layer, protect and waterproof effect inside the cable, the inside embedding in aluminum-plastic composite strip layer has the tin-plated wire, the toughness of cable has been increased, thereby improve the cable fastness, at last the cable surface cover be equipped with the armor metallic braid, a heat resistance for improve the cable, reduce the condition that the cable received high temperature damage.

Description

Temperature-sensing cable for bipolar fire alarm

Technical Field

The embodiment of the utility model provides a relate to temperature sensing cable field, concretely relates to bipolar fire alarm's temperature sensing cable.

Background

The temperature sensing cable of the detector is a temperature sensing element and can detect the temperature change of any point in the range along the installation length of the temperature sensing cable, when the temperature rises to a response value, the resistance value between the wire cores of the temperature sensing cable jumps, corresponding signals can be generated between the wires, and the fire alarm judgment is made through a fuzzy mathematical calculation method of a microcontroller of a single chip microcomputer.

The prior art has the following defects: the existing temperature-sensing cable is used for warning fire, and the temperature-sensing cable is often used for high-temperature environment work and easily damages an inner core inside the cable.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a temperature sensing cable of bipolar fire alarm, through the alloy line of deciding the temperature, the tin-plated wire, NTC heat-sensitive insulating layer and oversheath layer, the inner core of cable adopts the alloy material, by three conductors in another conductor transposition, and inner core surface is provided with NTC heat-sensitive insulating layer, better temperature-sensing effect has, then the outside has wrapped up the polyester band layer in proper order, aluminum-plastic composite band layer and oversheath layer, protect and waterproof effect inside the cable, the inside embedding of aluminum-plastic composite band layer has the tin-plated wire, the toughness of cable has been increased, thereby improve the cable fastness, at last the cable surface cover is equipped with the armor metallic braid, a heat resistance for improve the cable, reduce the condition that the cable received high temperature damage, problem because the cable protection nature is relatively poor among the solution prior art leads to.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: the utility model provides a temperature sensing cable of bipolar fire alarm, includes armor metallic braid, the both ends fixed mounting of armor metallic braid has cable joint, cable joint's a pot head is equipped with the outer loop, armor metallic braid's inner wall is provided with the oversheath layer, the inner wall of oversheath layer is provided with plastic-aluminum composite strip layer, plastic-aluminum composite strip layer's inner wall is provided with polyester strip layer, plastic-aluminum composite strip layer's inside embedding has a plurality of tinned wires, polyester strip layer's inside is provided with alloy temperature-fixing wire, the surface parcel of alloy temperature-fixing wire has NTC heat-sensitive insulating layer, cable joint's inside is provided with equipment joint, cable joint and equipment joint phase-match.

Furthermore, the cable joint is rotatably connected with the outer ring, and magnetic blocks are fixedly mounted on two sides of the inner wall of the outer ring.

Furthermore, the outer surface of the cable joint is positioned on the inner side of the outer ring and is provided with a through hole, and the two sides of the inside of the equipment joint are provided with inner grooves.

Furthermore, a blocking ring is fixedly mounted at one end of the inner wall of the inner groove, a clamping column is arranged inside the inner groove, and the blocking ring is sleeved on the outer surface of the clamping column.

Furthermore, the surface of card post is located one side cover that keeps off the ring and is equipped with the spring, the one end and the fender ring fixed connection of spring.

Furthermore, a stop block is fixedly mounted at one end of the clamping column, and the other end of the spring is fixedly connected with the stop block.

Furthermore, one end of the clamping column is matched with the through hole.

Further, the metal braided layer of armor is network structure.

The embodiment of the utility model provides a have following advantage:

1. by arranging the alloy constant temperature wire, the tinned wire, the NTC thermosensitive insulating layer and the outer sheath layer, the inner core of the cable is made of alloy materials, the three conductors are twisted with one another, the NTC thermosensitive insulating layer is arranged on the surface of the inner core, the cable has a good temperature sensing effect, then the polyester tape layer, the aluminum-plastic composite tape layer and the outer sheath layer are sequentially wrapped on the outer side of the inner core, the inner part of the cable is protected and prevented from water, the tinned wire is embedded in the aluminum-plastic composite tape layer, the toughness of the cable is improved, the firmness of the cable is improved, and finally the armored metal braid layer is sleeved on the outer surface of the cable, so that the heat resistance of the cable is improved, and the condition that the cable is damaged by high temperature is reduced;

2. through setting up the equipment joint, the cable joint, magnetic path and card post, when using, need be connected the cable with equipment, at the in-process of connecting, establish the cable joint cover of cable one end on the equipment joint earlier, then rotate the cable joint, the through-hole that makes the cable joint surface corresponds with the card post one end that the equipment connects, rotate the outer loop on cable joint surface after that, the magnetic path that makes the outer loop inner wall corresponds with the through-hole, the card post receives the magnetic attraction of magnetic path, outwards release from the inside groove, make the one end of card post insert in the through-hole, thereby fix equipment joint and cable joint, it is comparatively convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a partial view of the cable assembly of the present invention;

fig. 3 is a cross-sectional view of the cable housing of the present invention;

FIG. 4 is a connection structure diagram of the cable connector of the present invention;

fig. 5 is an enlarged view of a portion a of fig. 4 according to the present invention.

In the figure: the cable comprises an armored metal braid layer 1, a cable joint 2, an outer ring 3, an outer sheath layer 4, an aluminum-plastic composite tape layer 5, a polyester tape layer 6, a tin-plated wire 7, an alloy constant temperature wire 8, a NTC (negative temperature coefficient) thermosensitive insulating layer 9, an equipment joint 10, a magnetic block 11, a through hole 12, an inner groove 13, a retaining ring 14, a clamping column 15, a spring 16 and a stop block 17.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to the attached drawings 1-3 of the specification, the temperature-sensing cable of the bipolar fire alarm of the embodiment comprises an armored metal woven layer 1, cable joints 2 are fixedly installed at two ends of the armored metal woven layer 1, an outer ring 3 is sleeved at one end of each cable joint 2, an inner wall of the armored metal woven layer 1 is provided with an outer sheath layer 4, an inner wall of the outer sheath layer 4 is provided with an aluminum-plastic composite tape layer 5, an inner wall of the aluminum-plastic composite tape layer 5 is provided with a polyester tape layer 6, a plurality of tinned wires 7 are embedded in the aluminum-plastic composite tape layer 5, an alloy temperature-fixing wire 8 is arranged inside the polyester tape layer 6, an outer surface of the alloy temperature-fixing wire 8 is wrapped with a heat-sensitive insulating layer 9, an equipment joint 10 is arranged inside the cable joint NTC 2, and the cable joint 2 is matched with the equipment joint 10.

Referring to the attached fig. 4-5 in the specification, in the temperature-sensitive cable for bipolar fire alarm of this embodiment, the cable connector 2 is rotatably connected with the outer ring 3, and the magnetic blocks 11 are fixedly mounted on two sides of the inner wall of the outer ring 3.

Furthermore, the outer surface of the cable joint 2 is located on the inner side of the outer ring 3 and is provided with a through hole 12, the two sides of the inside of the equipment joint 10 are provided with inner grooves 13, the cable joint 2 at one end of the cable is sleeved on the equipment joint 10, and then the cable joint 2 is rotated, so that the through hole 12 on the outer surface of the cable joint 2 corresponds to one end of a clamping column 15 of the equipment joint 10.

Furthermore, a retaining ring 14 is fixedly mounted at one end of the inner wall of the inner groove 13, a clamping column 15 is arranged inside the inner groove 13, the retaining ring 14 is sleeved on the outer surface of the clamping column 15, the magnetic block 11 on the inner wall of the outer ring 3 corresponds to the through hole 12, and the clamping column 15 is attracted by the magnetic force of the magnetic block 11 and is pushed out from the inner groove 13, so that one end of the clamping column 15 is inserted into the through hole 12.

Furthermore, a spring 16 is sleeved on one side, located on the retaining ring 14, of the outer surface of the clamping column 15, one end of the spring 16 is fixedly connected with the retaining ring 14, and after the magnetic force of the magnetic block 11 is lost, the clamping column 15 is pulled back by the inner groove 13 of the spring 16, so that the limit between the equipment connector 10 and the cable connector 2 is released.

Furthermore, a stop 17 is fixedly mounted at one end of the clamping column 15, and the other end of the spring 16 is fixedly connected with the stop 17.

Furthermore, one end of the clamping column 15 is matched with the through hole 12, and when the connection between the equipment connector 10 and the cable connector 2 needs to be disconnected, the outer ring 3 can be rotated firstly, so that the magnetic block 11 on the outer ring 3 is staggered with the through hole 12.

Further, the armored metal braid 1 is of a net structure, and the armored metal braid 1 is sleeved on the outer surface of the cable and used for improving the heat resistance of the cable and reducing the condition that the cable is damaged by high temperature.

The working principle is as follows: referring to the attached drawings 1-3 of the specification, the inner core of cable adopts the alloy material, by three conductors in another conductor transposition, and inner core surface is provided with NTC heat-sensitive insulating layer 9, better temperature-sensing effect has, then the outside parcel has polyester tape layer 6 in proper order, compound belting layer 5 of plastic-aluminum and oversheath layer 4, protect and waterproof effect inside the cable, compound belting layer 5 of plastic-aluminum inside embedding has tin-plated wire 7, the toughness of cable has been increased, thereby improve the cable fastness, at last the cable surface cover is equipped with armor metallic braid 1, be used for improving the heat resistance of cable, reduce the condition that the cable received high temperature damage.

Referring to the attached drawings 4-5 of the specification, when in use, a cable is required to be connected with equipment, in the connection process, a cable connector 2 at one end of the cable is firstly sleeved on an equipment connector 10, then the cable connector 2 is rotated to enable a through hole 12 on the outer surface of the cable connector 2 to correspond to one end of a clamping column 15 of the equipment connector 10, then an outer ring 3 on the surface of the cable connector 2 is rotated to enable a magnetic block 11 on the inner wall of the outer ring 3 to correspond to the through hole 12, the clamping column 15 is attracted by the magnetic force of the magnetic block 11 and is pushed out from an inner groove 13, one end of the clamping column 15 is inserted into the through hole 12, so that the equipment connector 10 and the cable connector 2 are fixed, the connection is convenient, when the connection between the equipment connector 10 and the cable connector 2 needs to be disconnected, the outer ring 3 can be rotated firstly to enable the magnetic block 11 on the outer ring 3 to be staggered with the through hole 12, the inner groove 13 pulled back by a spring 16 after the magnetic block 11 loses the magnetic force of the clamping column 15, and releasing the limit of the equipment connector 10 and the cable connector 2, and then pulling out the cable connector 2.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (8)

1. The utility model provides a temperature sensing cable of bipolar fire alarm, includes armor metallic braid (1), its characterized in that: the utility model discloses a cable joint, including armor metallic braid (1), the inner wall of outer jacket layer (5), the inner wall of aluminum-plastic composite tape layer (5) is provided with polyester tape layer (6), the inside embedding of aluminum-plastic composite tape layer (5) has a plurality of tin-plated wires (7), the inside of polyester tape layer (6) is provided with alloy line (8) of deciding temperature, the surface parcel of alloy line (8) of deciding temperature has NTC thermal insulation layer (9), the inside of cable joint (2) is provided with equipment joint (10), cable joint (2) and equipment joint (10) phase-match.

2. A bipolar fire alarm temperature sensing cable according to claim 1, wherein: the cable connector (2) is rotatably connected with the outer ring (3), and magnetic blocks (11) are fixedly mounted on two sides of the inner wall of the outer ring (3).

3. A bipolar fire alarm temperature sensing cable according to claim 1, wherein: the outer surface of the cable joint (2) is positioned on the inner side of the outer ring (3) and is provided with a through hole (12), and the two sides of the inside of the equipment joint (10) are provided with inner grooves (13).

4. A bipolar fire alarm temperature sensing cable according to claim 3, wherein: a blocking ring (14) is fixedly mounted at one end of the inner wall of the inner groove (13), a clamping column (15) is arranged inside the inner groove (13), and the blocking ring (14) is sleeved on the outer surface of the clamping column (15).

5. The temperature-sensing cable for bipolar fire alarm according to claim 4, wherein: the outer surface of the clamping column (15) is sleeved with a spring (16) on one side of the blocking ring (14), and one end of the spring (16) is fixedly connected with the blocking ring (14).

6. The temperature-sensing cable for bipolar fire alarm according to claim 5, wherein: one end of the clamping column (15) is fixedly provided with a stop block (17), and the other end of the spring (16) is fixedly connected with the stop block (17).

7. The temperature-sensing cable for bipolar fire alarm according to claim 4, wherein: one end of the clamping column (15) is matched with the through hole (12).

8. A bipolar fire alarm temperature sensing cable according to claim 1, wherein: the armor metal braid layer (1) is of a net structure.

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