CN211504435U

CN211504435U - Sectional type cold junction thermocouple

Info

Publication number: CN211504435U
Application number: CN202020217218.3U
Authority: CN
Inventors: 任锦杰
Original assignee: Shaoxing Hongda Instrument Co ltd
Current assignee: Shaoxing Hongda Instrument Co ltd
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2020-09-15
Anticipated expiration: 2030-02-27

Abstract

The utility model discloses a belong to thermocouple technical field, specifically be a sectional type cold junction thermocouple, including armor, first cold end cover, interior thimble and second cold end cover, the right side wall threaded connection of armor first cold end cover with the second cold end cover, the right side wall threaded connection of armor has the armor adapter sleeve, the right side wall of armor adapter sleeve cup joints first cold end cover, the right side wall of first cold end cover has seted up the spiro ring, the right side wall integrated into one piece of first cold end cover is connected with the spiro ring, the circumference inner wall of first cold end cover and second cold end cover has cup jointed high temperature rubber ring, this sectional type cold junction thermocouple sets up two sets of independent and joinable cold end covers in the armor outside, and the cold end cover can carry out both sides buckle, can reach the sectional type purpose, changes the mode of cold end, makes high temperature insulating material can install, the inside high temperature rubber that fills has solved cold junction high temperature resistance problem, reaches high temperature resistant effect.

Description

Sectional type cold junction thermocouple

Technical Field

The utility model relates to a thermocouple technical field specifically is a sectional type cold junction thermocouple.

Background

The temperature measuring element is a detecting element of a temperature measuring instrument. Such as thermocouples, thermal resistors, thermistors, and the like. The temperature measured by the contact type temperature measuring instrument is determined by the temperature sensed by the temperature measuring element. Therefore, after selecting the temperature measuring element and the secondary instrument which are economical and reasonable and can meet the requirements of precision and the like required by production, whether the temperature measuring element can be correctly installed is an important practical problem. If the instrument is installed improperly, the measurement may be inaccurate, or even production may be compromised, and a thermocouple may be included in the temperature sensing element.

The thermocouple is a commonly used temperature measuring element in a temperature measuring instrument, directly measures temperature, converts a temperature signal into a thermal electromotive force signal, and converts the thermal electromotive force signal into the temperature of a measured medium through an electric instrument (a secondary instrument). The appearance of various thermocouples is very different according to needs, but the basic structures of the thermocouples are almost the same, and the thermocouples are generally composed of main parts such as a thermode, an insulating sleeve protection tube, a junction box and the like, and are generally matched with a display instrument, a recording instrument and an electronic regulator for use.

In industrial processes, temperature is one of the important parameters that needs to be measured and controlled. In temperature measurement, the thermocouple is widely applied, and has the advantages of simple structure, convenient manufacture, wide measurement range, high precision, small inertia, convenient output signal remote transmission and the like. In addition, since the thermocouple is a passive sensor, no external power supply is needed during measurement, and the thermocouple is very convenient to use, the thermocouple is often used for measuring the temperature of gas or liquid in a furnace or a pipeline and the surface temperature of solid.

The existing thermocouple is characterized in that a bright wire and a compensation wire inside the existing thermocouple are brazed through silver, and an epoxy resin is filled in a stainless steel cold end sleeve for insulation, so that the existing thermocouple has the defects of fixed arrangement, no high temperature resistance and unsuitability for industrial and mining environments with the temperature of more than 300 ℃.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sectional type cold junction thermocouple to the current thermocouple that proposes in solving above-mentioned background art is that the inside is through silver-copper brazing between bright silk and the compensation wire, and the epoxy is filled to plus stainless steel cold end cover the inside and is insulated, and the shortcoming is fixed the setting, also can not resist high temperature, the problem of the industrial and mining environment that is unsuitable more than 300 ℃.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a sectional type cold junction thermocouple, includes armor, first cold end cover, embedded ring and second cold end cover, the right side wall threaded connection of armor first cold end cover with the second cold end cover, the right side wall threaded connection of armor has the armor adapter sleeve, the right side wall of armor adapter sleeve cup joints first cold end cover, the spiro is seted up to the right side wall of first cold end cover, the right side wall integrated into one piece of first cold end cover is connected with the spiro, first cold end cover with the circumference inner wall of second cold end cover has cup jointed high temperature rubber ring, the circumference outer wall of high temperature rubber ring has cup jointed the compensation wire and has embedded, the left side wall of second cold end cover reserve have with loop assorted nestification in, the left side wall of second cold end cover reserve have with spiro assorted thread groove.

Preferably, the right side wall of the first cold end sleeve is welded with a platform ring, the right side wall of the platform ring is provided with a positioning ring, and the positioning ring is circularly arrayed on the right side wall of the platform ring.

Preferably, the overall length of the second cold end collar is the same as the overall length of the first cold end collar, and the right side wall of the first cold end collar is aligned with the left side wall of the second cold end collar.

Preferably, the inner diameters of the first cold end sleeve and the second cold end sleeve are matched with the outer diameter of the high-temperature rubber ring.

Preferably, the inner diameter of the high-temperature rubber ring is matched with the outer diameter of the compensating lead.

Compared with the prior art, the beneficial effects of the utility model are that: this sectional type cold junction thermocouple sets up the cold pot head of two sets of independence and joinables in the armor outside, and the cold pot head can carry out the both sides buckle, can reach the sectional type purpose, changes the mode of cold junction for high temperature insulation material can install, and inside is filled with high temperature rubber, has solved cold junction high temperature resistance problem, reaches high temperature resistant effect.

Drawings

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

FIG. 2 is an exploded view of the present invention;

fig. 3 is a schematic side view of the cold end sleeve of the present invention.

In the figure: 100 armor, 110 armor connecting sleeves, 200 first cold end sleeve, 210 embedded ring, 220 spiral ring, 230 platform ring, 240 positioning ring, 250 high-temperature rubber ring, 260 compensating lead and 300 second cold end sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

The utility model provides a sectional type cold junction thermocouple, which is convenient to combine by the combined application of accessories to achieve the effect of high temperature resistance, please refer to fig. 1-3, comprising an armor 100, a first cold end sleeve 200, an embedded ring 210 and a second cold end sleeve 300;

referring to fig. 1 again, the right side wall of the sheath 100 has a sheath connecting sleeve 110, and specifically, the right side wall of the sheath 100 is connected with the sheath connecting sleeve 110 by a screw thread;

referring to fig. 1-3 again, the inside of the first cold end sleeve 200 is fixedly connected with the outside of the armor 100, specifically, the right side wall of the armor 100 is in threaded connection with the first cold end sleeve 200, the right side wall of the armor connecting sleeve 110 is sleeved with the first cold end sleeve 200, the right side wall of the first cold end sleeve 200 is provided with a spiral ring 220, the right side wall of the first cold end sleeve 200 is integrally connected with the spiral ring 220, the circumferential inner walls of the first cold end sleeve 200 and the second cold end sleeve 300 are sleeved with a high-temperature rubber ring 250, the circumferential outer wall of the high-temperature rubber ring 250 is sleeved with a compensation wire 260, the left side wall of the second cold end sleeve 300 is reserved with an inner nest matched with the embedded ring 210, and the left side wall of the second cold end sleeve 300 is reserved with a thread groove matched with the spiral ring 220;

referring to fig. 1 again, the inside of the second cold end sleeve 300 is fixedly connected with the outside of the armor 100, and specifically, the right side wall of the armor 100 is connected with the second cold end sleeve 300 by screw threads;

when the specific use, at first at the outside combination first cold end cover 200 of armor 100 and second cold end cover 300, cup joint high temperature rubber ring 250 in the inside of first cold end cover 200 and second cold end cover 300, the cold end comprises the stainless steel siphunculus of two sectional types, usable inner ring 210, spiral ring 220 and the platform ring 230 that has holding ring 240 make up, then chucking from top to bottom, the purpose of two-section combination has been increased, the mode of change cold end, make high temperature insulation material can install, inside is filled with high temperature rubber, cold end high temperature resistant effect has been reached.

Referring to fig. 2-3 again, in order to increase the assembly effect, specifically, the platform ring 230 is welded to the right sidewall of the first cold end sleeve 200, the positioning ring 240 is disposed on the right sidewall of the platform ring 230, the positioning rings 240 are circularly arrayed on the right sidewall of the platform ring 230, the overall length of the second cold end sleeve 300 is the same as the overall length of the first cold end sleeve 200, and the right sidewall of the first cold end sleeve 200 is aligned with the left sidewall of the second cold end sleeve 300.

Referring to fig. 2 again, in order to ensure the stability of the assembly, specifically, the inner diameters of the first cold end sleeve 200 and the second cold end sleeve 300 are matched with the outer diameter of the high temperature rubber ring 250, and the inner diameter of the high temperature rubber ring 250 is matched with the outer diameter of the compensation wire 260.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the description of such combinations is not exhaustive in the present specification only for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A sectional type cold junction thermocouple which characterized in that: including armor (100), first cold end cover (200), embedded ring (210) and second cold end cover (300), the right side wall threaded connection of armor (100) first cold end cover (200) with second cold end cover (300), the right side wall threaded connection of armor (100) has armor adapter sleeve (110), the right side wall cup joint of armor adapter sleeve (110) first cold end cover (200), the right side wall of first cold end cover (200) has seted up spiro (220), the right side wall integrated into one piece of first cold end cover (200) is connected with spiro (220), first cold end cover (200) with the circumference inner wall of second cold end cover (300) has cup jointed high temperature rubber ring (250), the circumference outer wall of high temperature rubber ring (250) has cup jointed compensation wire (260), the left side wall of second cold end cover (300) is reserved have with the interior nested of embedded ring (210) assorted, and a spiral groove matched with the spiral ring (220) is reserved on the left side wall of the second cold end sleeve (300).

2. A segmented cold end thermocouple according to claim 1, wherein: the right side wall of the first cold end sleeve (200) is welded with a platform ring (230), the right side wall of the platform ring (230) is provided with a positioning ring (240), and the positioning ring (240) is circularly arrayed on the right side wall of the platform ring (230).

3. A segmented cold end thermocouple according to claim 1, wherein: the overall length of the second cold end sleeve (300) is the same as the overall length of the first cold end sleeve (200), and the right side wall of the first cold end sleeve (200) is aligned with the left side wall of the second cold end sleeve (300).

4. A segmented cold end thermocouple according to claim 1, wherein: the inner diameters of the first cold end sleeve (200) and the second cold end sleeve (300) are matched with the outer diameter of the high-temperature rubber ring (250).

5. A segmented cold end thermocouple according to claim 1, wherein: the inner diameter of the high-temperature rubber ring (250) is matched with the outer diameter of the compensating lead (260).