CN220525160U

CN220525160U - Whole-area monitoring temperature sensing wire

Info

Publication number: CN220525160U
Application number: CN202321795379.0U
Authority: CN
Inventors: 张怡隆; 江玉琳; 卜正棋
Original assignee: E Poly Technology Co ltd
Current assignee: E Poly Technology Co ltd
Priority date: 2023-07-10
Filing date: 2023-07-10
Publication date: 2024-02-23
Anticipated expiration: 2033-07-10

Abstract

The utility model discloses a full-area monitoring temperature sensing wire, which belongs to the technical field of temperature measuring elements and comprises a first conductor set, a second lead and a PTC material layer, wherein the first conductor set is divided into a plurality of first conductor segments along the length direction by a plurality of first fractures, the PTC material layer forms a first serial body at the first fractures, the second lead comprises a second conductor and a second insulating layer wrapped outside the second conductor, the tail end of the first conductor set is connected with the tail end of the second conductor, the head end of the first conductor set is provided with a first wiring terminal, and the head end of the second conductor set is provided with a second wiring terminal. The utility model utilizes the characteristics of the PTC material to achieve the purpose of monitoring the temperature; the number of the monitoring points can be adjusted according to actual requirements, so that the purpose of large-area monitoring in a whole area is achieved; the temperature sensing wire is of a linear structure, can be cut freely under a certain length, can be wound on the surfaces of objects in various shapes to monitor the temperature, and can prevent the phenomenon of over-temperature in whole or part.

Description

Whole-area monitoring temperature sensing wire

Technical Field

The utility model belongs to the technical field of temperature measuring elements, and particularly relates to a full-area monitoring temperature sensing wire.

Background

The conventional thermal resistor (thermocouple temperature sensing wire, temperature sensing probe) is a commonly used temperature measuring element, and the temperature is measured by utilizing the characteristic that the resistance of a substance changes along with the change of the temperature. The heated part (temperature sensing element) of the thermal resistor is formed by uniformly winding fine metal wires on a framework made of insulating materials, and when the measured medium has a temperature gradient, the measured temperature is the average temperature of the medium layer in the range of the temperature sensing element. The measurement mode has the advantage of accurate measurement temperature, but the irreparable disadvantage is that the measurement position range has only one point (the measured medium is required to have uniform distribution characteristics). The temperature of the point often cannot completely represent the temperature value of the whole area, and the temperature value of the whole area is extremely large in detection of a blank area, and regional temperature feedback is inaccurate and has risks in certain application; if an object with uneven temperature distribution or application or object with multiple temperatures in a region are met, multiple systems and multiple-point detection are needed, multiple temperature sensing probes are needed to be introduced simultaneously to realize detection according to different temperature regions, the construction of installing the temperature sensing probes is troublesome, the conventional probes have the characteristic of only single-point detection, only the point of a terminal on each temperature sensing line can sense and detect the temperature, and even if the multiple temperature sensing probes are installed, the temperature of each point of the whole region cannot be detected; in addition, if the temperature sensing point of the terminal is damaged, the temperature sensing wire of most current temperature sensing probes (thermocouples) must be replaced, and the temperature sensing wire cannot be cut off.

The PTC is an abbreviation of Positive Temperature Coefficient, meaning a positive temperature coefficient, and the PTC material generally refers to a semiconductor material or a component with a very large positive temperature coefficient, and the existing PTC material is generally applied in parallel, such as a self-temperature-control heat tracing band, and has the characteristics of being capable of automatically limiting the temperature during heating, automatically adjusting the output power along with the temperature of a heated body without any additional equipment, being capable of being cut down at will or being lengthened in a certain length range for use, and the like, so that the PTC material is widely applied in industry.

Disclosure of Invention

Technical problems: aiming at the problems in the prior art, the technical problem to be solved by the utility model is to provide a full-area monitoring temperature of a monitored area by a full-area monitoring temperature sensing line.

The technical scheme is as follows: in order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a full area monitoring temperature sensing line, includes first conductor group, second wire and parcel are in the PTC material layer outside first conductor group and the second wire, first conductor group is cut apart into a plurality of first conductor sections by a plurality of first fracture along length direction, PTC material layer is in first fracture department forms first serial body, the second wire includes the second conductor and wraps up the second insulating layer outside the second conductor, the tail end of first conductor group with the tail end connection of second conductor, first conductor group head end is equipped with first wiring end, second conductor head end is equipped with the second wiring end.

Preferably, the first conductor set includes a first conductor, a first terminal is disposed at a head end of the first conductor, and a tail end of the first conductor is connected to a tail end of the second conductor.

Preferably, the first conductor set includes more than two first conductors, a first terminal is disposed at a head end of one of the more than two first conductors, a tail end of another one of the more than two first conductors is connected with a tail end of the second conductor, the PTC material layer includes an inner layer and an outer layer, the inner layer is wrapped outside the more than two first conductors, and the outer layer is wrapped outside the inner layer and the second conductor.

Preferably, the two or more first conductors are arranged side by side, and the first fracture on one first conductor and the first fracture on the adjacent first conductor in the two or more first conductors are arranged at intervals in the length direction of the temperature sensing line.

Preferably, the cross section of the second wire is circular, and the cross section of the temperature sensing wire is circular.

Preferably, the PTC material layer is made of a material.

The beneficial effects are that: compared with the prior art, the utility model has the following advantages:

1. the first conductor comprises a plurality of disconnected first conductor sections, the PTC material is connected with the first conductor sections in series, and the temperature is monitored by utilizing the characteristic of the PTC material and the variation of resistance along with the fluctuation of temperature;

2. the number of monitoring points is changed by adjusting the length of the first conductor section every 40 or more square, the number of the monitoring points can be adjusted according to actual requirements, the purpose of large-area monitoring of the whole area is achieved, and the whole and local overtemperature is effectively monitored;

3. the temperature sensing wire is of a linear structure, can be cut freely under a certain length, can be wound on the surfaces of objects in various shapes to monitor the temperature, and can prevent the phenomenon of over-temperature in whole or part.

Drawings

FIG. 1 is a schematic cross-sectional structure of embodiment 1 of the present utility model;

FIG. 2 is a schematic view of the structure of embodiment 1 of the present utility model;

FIG. 3 is a schematic cross-sectional view of embodiment 2 of the present utility model;

fig. 4 is a schematic structural view of embodiment 2 of the present utility model.

Detailed Description

The utility model will be further illustrated with reference to specific examples, which are carried out on the basis of the technical solutions of the utility model, it being understood that these examples are only intended to illustrate the utility model and are not intended to limit the scope thereof.

Example 1

As shown in fig. 1 and fig. 2, a full-area monitoring temperature sensing wire comprises a first conductor set 1, a second conducting wire 2 and a PTC material layer 3, wherein the first conductor set 1 comprises a first conductor 11, the first conductor 11 adopts copper wires (other electric good conductors such as aluminum can be adopted), the cross section of the first conductor is circular, the cross section of the second conducting wire 2 is circular, the second conducting wire 2 comprises a second conductor 21 and a second insulating layer 22 wrapped outside the second conductor 21, the second conductor 21 adopts copper wires (other electric good conductors such as aluminum can be adopted), the first conductor 11 and the second conducting wire 2 are arranged in parallel, the PTC material layer 3 is wrapped outside the first conductor set 1 and the second conducting wire 2, the whole temperature sensing wire is circular in cross section, the first conductor 1 and the second conducting wire 2 are placed in parallel by using a die, and the PTC material layer 3 is extruded by an extruder to be attached to the first conductor 1 and the second conducting wire 2.

As shown in fig. 2, the first conductor 11 is divided into a plurality of first conductor segments 101 by a plurality of first breaks 4 along the length direction, the plurality of first breaks 4 are equidistantly arranged, so that the first conductor 11 is composed of a plurality of discontinuous first conductor segments 101, the PTC material layer 3 forms a first serial body 301 at the first breaks 4, the PTC material layer 3 extruded during manufacture fills the first breaks 4 to form the first serial body 301, thereby connecting the discontinuous first conductor segments 101 in series, the first conductor 11, the second wire 2 and the PTC material layer 3 form a continuous integral structure, and the cable strength of the temperature sensing cable is increased.

As shown in fig. 2, the tail end of the first conductor 11 is connected with the tail end of the second conductor 21 through the shorting terminal 7, so that the second wire 2 can be used as a loop conductor, the head end of the first conductor set 1 is provided with a first terminal 102, the head end of the second conductor set 21 is provided with a second terminal 201, the first terminal 102 and the second terminal 201 are used for being connected with an external monitoring system, when the PTC material layer 3 is heated, the resistance changes along with the fluctuation of temperature, and the purpose of detecting the temperature can be achieved by detecting the change of the temperature sensing wire resistance through the monitoring system. On the temperature sensing line, the first conductor segments 101 of the first conductor 11 are connected in series through the PTC material layer 3, and each position on the temperature sensing line can sense the temperature change at the corresponding position, and the temperature is not detected by a specific point, so that no matter how large area needs to be detected, the full area detection can be performed by only placing one continuous temperature sensing line.

When the electric floor heating system is used, for example, the electric floor heating of the ground needs to be monitored, the temperature measuring lines of the existing electric floor heating are all single-point monitoring, the temperature near the monitoring point can only be monitored, when the temperature is far away from the monitoring point, the overtemperature phenomenon exists, the temperature cannot be monitored, the overtemperature can cause damage to the floor heating system, and even larger harm such as fire disaster can occur. The temperature sensing wires of the embodiment are evenly paved on the ground, and the monitoring points are more, so that the whole-area monitoring is realized, the over-temperature phenomenon exists at any position of the surface of the ground heating, the resistance of the temperature sensing wires is increased, the control panel monitors that the resistance is increased abnormally, and the heating system can be warned or suspended, so that the generation of larger harm can be avoided.

Example 2

As shown in fig. 3 and 4, the difference from embodiment 1 is that the first conductor set 1 includes two first conductors 11 arranged side by side, the two first conductors 11 are arranged up and down, the head end of the upper first conductor 11 is provided with a first terminal 102, and the tail end is flush with the PTC material layer 3; the tail end of the lower one of the two first conductors 11 is connected with the tail end of the second conductor 21 through a connecting short-circuit terminal 7, and the head end is flush with the PTC material layer 3; the PTC material layer 3 comprises an inner layer 31 and an outer layer 32, the inner layer 31 being wrapped around the two first conductors 11, and the outer layer 32 being wrapped around the inner layer 31 and the second lead 2. When the two first conductors 11 are arranged to prevent the first conductors 11 from being single, when the serial first conductors 11 formed at the fracture breaks down, the whole serial first conductors 11 are disconnected, so that the situation that the serial first conductors 11 cannot be used is caused; the two first conductors 11 are used, and at the fracture, the first conductor 11 or the second first conductor 11 can be selected according to the distribution of conductive particles in the PTC material, or the required serial conductor can be formed by the PTC material, when the PTC material encounters physical damage fracture or other problems, the PTC material cannot be connected in series with the first conductor 11 to form the serial conductor, and the serial conductor can be formed with the second first conductor 11 by the PTC material to ensure the use. After the two first conductors 11 are arranged, the use of the PTC material can be ensured as long as the two first conductors 11 and the PTC material are not broken at the same time. The number of the first conductors 11 can be multiple, the head end of one of the first conductors 11 is provided with a first wiring end 102, and the tail end of the other first conductor is selected to be short-circuited with the tail end of the second conductor 21. The arrangement of a plurality of the cables can increase the density of the fracture and the strength of the whole cable.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Claims

1. The utility model provides a full area monitoring temperature sensing line, its characterized in that includes first conductor group (1), second wire (2) and parcel are in PTC material layer (3) outside first conductor group (1) and second wire (2), first conductor group (1) are cut apart into a plurality of first conductor sections (101) by a plurality of first fracture (4) along length direction, PTC material layer (3) are in first fracture (4) department forms first serial connection body (301), second wire (2) include second conductor (21) and parcel are in second insulating layer (22) outside second conductor (21), the tail end of first conductor group (1) with the tail end connection of second conductor (21), first conductor group (1) head end is equipped with first wiring end (102), second conductor (21) head end is equipped with second wiring end (201).

2. The full-area monitoring temperature sensing line according to claim 1, wherein the first conductor set (1) comprises a first conductor (11), a first terminal (102) is arranged at the head end of the first conductor (11), and the tail end of the first conductor (11) is connected with the tail end of the second conductor (21).

3. The full-area monitoring temperature sensing wire according to claim 1, wherein the first conductor set (1) comprises more than two first conductors (11), a first terminal (102) is arranged at the head end of one first conductor (11) of the more than two first conductors (11), the tail end of the other first conductor (11) of the more than two first conductors (11) is connected with the tail end of the second conductor (21), the PTC material layer (3) comprises an inner layer (31) and an outer layer (32), the inner layer (31) is wrapped outside the more than two first conductors (11), and the outer layer (32) is wrapped outside the inner layer (31) and the second conducting wire (2).

4. A full-area monitoring temperature sensing wire according to claim 3, characterized in that the two or more first conductors (11) are arranged side by side, and the first fracture (4) on one first conductor (11) of the two or more first conductors (11) is arranged at intervals in the length direction of the temperature sensing wire with the first fracture (4) on the adjacent first conductor (11).

5. The full area monitoring temperature sensing wire according to claim 1, characterized in that the second wire (2) is circular in cross section and the temperature sensing wire is circular in cross section.

6. The full area monitoring temperature sensing line according to claim 1, characterized in that the PTC material layer (3) is made of PTC material.