CN87203492U

CN87203492U - Temperature sensor

Info

Publication number: CN87203492U
Application number: CN 87203492
Authority: CN
Inventors: 刘芝德; 李秀鸿; 刘军
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-07-31
Filing date: 1987-07-31
Publication date: 1988-08-10

Abstract

The utility model discloses a temperature sensor used in a temperature control device, belonging to a heating function switch. The utility model comprises a core body, the housing of the core body, and an electrode. The utility model is characterized in that the core body comprises the mixture composed of fusible salt and insulating substance. The temperature sensor has the advantage of simple structure, easy production, and the spatial region of the temperature control can be large or small; besides, the temperature sensor is suitable for multiple temperature control situations.

Description

Temperature sensor

The utility model belongs to a kind of thermally-actuated switch.

Existing thermally-actuated switch controlled temperature space scope is generally less, influences its result of use under some occasions.Such as its as the application on the temperature alarming device of main element on, temperature controlled if desired spatial dimension is bigger, the reliability of warning device is just very poor.Reason just is that thermally-actuated switch controlled temperature space scope is little, and the local temperature jump of Nei each on a large scale can not all cause its action and warning device is reported to the police.Following concrete example is good at illustrating this point.

Manufacture of cement capital equipment cement cooling machine is equipped with Lou material warning device, its thermally-actuated switch adopts thermocouple usually, and alarm principle is: when leaking the material generation, in a single day clinker drops on the thermocouple or also is in its controlled temperature space scope near it, will cause its action, cause reporting to the police.But the possible point range that leaks material is very big, and the clinker that can not at every turn spill all drops in the thermocouple controlled temperature space scope, all reports to the police poor reliability so warning device can not accomplish to leak the material accident at every turn.

The purpose of this utility model just is to provide a kind of thermally-actuated switch, and its controlled temperature space wide ranges is suitable for wide.

The technical solution of the utility model is: it comprises the shell of core body, sealed envelope core body, all suffers pasting core body but by core body pair of electrodes at interval, its feature is as follows:

1, the mixture formed by fusible salt and SiC of core body,

1.1 weight proportion is:

Fusible salt: SiC=1:3～1:4,

1.2 fusible salt is MgCl ₂6H ₂O or KSCN.

2, shell is the metal material or the good insulating material of thermal conductivity of acidproof alkali salt.

3, if shell is a metal material, then shell is as an electrode.

Operation principle is described below:

MgCl ₂6H ₂O, KSCN is a kind of good conductor of electricity under high temperature melting and fusing after coagulation state, mixes megohmite insulant SiC and can guarantee to melt and non-conductively under the after coagulation state promptly guarantee under the core body normal temperature non-conductively, conducts electricity during high temperature, and, the conduction critical temperature value is also improved along with incorporation increases.In above-mentioned given ratio range, the critical temperature of core body conduction is adjustable encloses and is 105～135 ℃ (fusible salt is MgCl ₂6H ₂O) and 155～180 ℃ (fusible salt is KSCN).By adjust proportioning can make the conduction critical temperature of core body be stabilized in certain a bit on.So the utility model can be made thermally-actuated switch, can be used in the attemperating unit.

The utility model adopts following fabrication schedule: 1. distinguish each constituent of dry core body; 2. the fusible salt fusing is closed with SiC and mix; 3. cooling; 4. grind up foam; 5. the shell of packing into seals behind the extraction electrode.

The utility model has following advantage:

1, controlled temperature space wide ranges.Its manufacture method is uncomplicated, and raw material is cheap, and the source foot is so be convenient to produce little of several centimetres, big to ten meters ascending thermally-actuated switch of a series of controlled temperature space scopes how long.

2, be suitable for extensively.Because temperature-control range is wide, be easy to make, be easy to be processed into various external forms, so can be according to the heat effect shape of the size that specifically need produce specific needs easily, shape, critical temperature value.So it all can obtain adopting in many temperature control occasions.

3, simple structure, easy to manufacture.

The utility model provides five examples altogether, provide by accompanying drawing 1～5 respectively, below in conjunction with detailed description the utility model.

Fig. 1 is a kind of concrete structure schematic diagram of the present utility model.

Fig. 2 also is a kind of concrete structure schematic diagram of the present utility model.

Fig. 3 also is a kind of concrete structure schematic diagram of the present utility model.

Fig. 4 also is a kind of concrete structure schematic diagram of the present utility model.

Fig. 5 also is a kind of concrete structure schematic diagram of the present utility model.

Example 1: with reference to figure 1, it comprises core body 1, shell 2, electrode 3.

Core body 1 is column such as cylinder, and by the mixture that fusible salt and SiC form, fusible salt is MgCl ₂6H ₂O or KSCN, proportioning is as follows:

Fusible salt: SiC=1:3～1:4

Best proportioning is: fusible salt: SiC=1:3.3～1:3.5

Under best proportioning, core body 1 conduction critical temperature value stabilization reacts the sensitiveest.

Under said ratio, the conduction critical temperature adjustable extent of core body 1 is 105～135 ℃ respectively, and (fusible salt is MgCl ₂6H ₂O) and 155～180 ℃ (fusible salt is KSCN).

Shell 2 adopts the nickel chromium triangle steel pipe, and as asbestos seal, it directly makes an electrode with insulating material 6 at two ends.

Electrode 34 is drawn by lead-in wire, and lead-in wire 4 runs through to put and is embedded in core body 1, when melt at core body 1 arbitrary place, can both make electrode 3 and shell 2 conductings like this.Lead-in wire 4 can adopt tungsten filament, its good conductivity, acid and alkali-resistance, but its softness, thus with pillar 5 supports, in order to avoid with shell 2(electrode) contact.

Example 1 can be series in the attemperating unit, is positioned over temperature control point place, and no matter its which part is heated, and core body 1 arbitrary place fusing all can make its conducting, thereby causes the attemperating unit action.

Example 2 as shown in Figure 2, its comparative example 1 only has been many electrode 7, promptly goes between 4 to have drawn electrode 3 and 7 two electrodes.It makes in a plurality of series connection and uses, and such as connecting with example 1, be equivalent to like this form bigger thermally-actuated switch, thereby the controlled temperature space scope is bigger.

Example 3 as shown in Figure 4, the difference of it and example 1 is that shell 2 is that the insulating heat-conduction material of acid and alkali-resistance is as quartz glass, for this reason,

electrode

8,9 all uses lead-in wire 4 to draw, and shell 2 two ends are salable and needn't adopt the insulating material sealing through heat setting process in addition.

Example 4 as shown in Figure 3, the difference of it and example 3 has been electrode 10,11 many, its two be connected with

electrode

8,9 respectively by lead-in wire 4.It also is convenient to a plurality of series connection uses.

Example 5 as shown in Figure 5, its shell 2 is nickel-chromium steels, has external screw thread, this is convenient to it and is installed in and especially is convenient on the object that is subjected to temperature control be installed on the object of running.

Claims

1, a kind of thermally-actuated switch comprises the shell 2 of core body 1, sealed envelope core body 1, all suffers pasting core body 1 but by core body 1 pair of electrodes (with pillar 5 supports) at interval, it is characterized in that:

1.1 the mixture that core body 1 is made up of fusible salt and SiC,

1.1.1 weight proportion is: fusible salt: SiC=1: 3～1: 4,

1.1.1.1 what preferentially select for use is: fusible salt: SiC=1: 3.3～1: 3.5,

1.1.2 fusible salt is MgCl ₂6H ₂O or KSCN,

1.2 shell 2 is the metal material or the good insulating material of thermal conductivity of acidproof alkali salt,

1.3 if shell 2 is a metal material, then it makes an electrode.

2, by the described thermally-actuated switch of claim 1, it is characterized in that:

2.1 shell 2 is metal materials of acidproof alkali salt, two ends seal with insulating material,

2.2 another electrode is an electrode 3, it is put the lead-in wire 4 that is embedded in core body 1 and draws by running through.

3, by the described thermally-actuated switch of claim 2, it is characterized in that: shell 2 is nickel chromium triangle steel pipes.

4, by the described thermally-actuated switch of claim 2, it is characterized in that: also extraction electrode 7 of 4 other ends goes between.

5, by the described thermally-actuated switch of claim 3, it is characterized in that: also extraction electrode 7 of 4 other ends goes between.

6, by the described thermally-actuated switch of claim 1, it is characterized in that:

6.1 shell 2 is good insulating material of thermal conductivity of acid and alkali-resistance,

6.2 run through with two and to put lead-in wire 4 extraction electrodes 8,9 that are embedded in core body 1.

7, by the described thermally-actuated switch of claim 6, it is characterized in that: shell 2 is quartz glasss.

8, by the described thermally-actuated switch of claim 6, it is characterized in that: the lead-in wire 4 of extraction electrode 8,9 is again respectively at other end extraction electrode 10,11.

9, by the described thermally-actuated switch of claim 7, it is characterized in that: the lead-in wire 4 of extraction electrode 8,9 is again respectively at other end extraction electrode 10,11.

10, by the described thermally-actuated switch of claim 2, it is characterized in that: shell 2 band external screw threads.

11, by the described thermally-actuated switch of claim 3, it is characterized in that: shell 2 band external screw threads.

12, by described any one thermally-actuated switch of claim 2～11, it is characterized in that: lead-in wire 4 is tungsten filaments.