CN215573403U

CN215573403U - Corrosion-resistant platinum-rhodium thermocouple

Info

Publication number: CN215573403U
Application number: CN202121249338.2U
Authority: CN
Inventors: 林士元; 姚月刚
Original assignee: Tianchang Xinbaitong Instrument Co ltd
Current assignee: Tianchang Xinbaitong Instrument Co ltd
Priority date: 2021-06-05
Filing date: 2021-06-05
Publication date: 2022-01-18
Anticipated expiration: 2031-06-05

Abstract

The utility model relates to the technical field of thermocouples, and particularly discloses a corrosion-resistant platinum-rhodium thermocouple which comprises a wiring terminal, a wire slot box and a fastening bolt connected below the wire slot box, wherein one free end of the wiring terminal is connected with the outer side of the wire slot box in a penetrating manner, the other free end of the wiring terminal is provided with a baffle, and the inner side of the wiring terminal is spliced with a cable; the top of the wire groove box is provided with a through hole which is obliquely arranged, and a sealing cover matched with the through hole is arranged above the through hole; the whole thermocouple can be better combined with the wiring terminal through the sealing cover matched with the wire groove box, so that the normal use of the whole thermocouple is met, and meanwhile, the epoxy resin plate matched with the temperature measuring element can be matched with the positioning bolt and can be connected with the protective sleeve, so that the whole thermocouple can have better corrosion resistance when in use.

Description

Corrosion-resistant platinum-rhodium thermocouple

Technical Field

The utility model relates to the technical field of thermocouples, in particular to a corrosion-resistant platinum-rhodium thermocouple.

Background

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

In the normal use and work process of the thermocouple, the thermocouple directly acts on the surface of a measured medium, so that the thermocouple is required to have extremely high use stability, once the measured medium is a corrosive medium, the thermocouple is required to have corrosion resistance, the appearance of the conventional thermocouple is usually made of high-quality alloy, the corrosion resistance has certain excellent performance, but the protective performance of the whole thermocouple is reduced along with the prolonging of the use time, and the normal temperature measurement of the whole thermocouple is seriously influenced, so that the corrosion-resistant platinum-rhodium thermocouple is provided.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the corrosion-resistant platinum-rhodium thermocouple, which has the advantage that the whole thermocouple can be conveniently in contact with a corrosive medium so as to meet the measurement requirement, and solves the problem that when the existing thermocouple is used, corrosive pits appear on the surface of the corrosive medium after the existing thermocouple is in long-term contact, so that the protection performance of the whole thermocouple is reduced, and the normal temperature measurement of the thermocouple is influenced.

The corrosion-resistant platinum-rhodium thermocouple comprises a wiring terminal, a wire slot box and a fastening bolt connected below the wire slot box, wherein one free end of the wiring terminal is connected with the outer side of the wire slot box in a penetrating manner, the other free end of the wiring terminal is provided with a baffle, and a cable is inserted into the inner side of the wiring terminal; the top of the wire slot box is provided with a through hole which is obliquely arranged, a sealing cover which is matched with the through hole is arranged above the through hole, and the sealing cover is connected with the wire slot box in a fastening bolt connection mode; the top of the fastening bolt is communicated with the bottom of the wire groove box, a protective sleeve is mounted at the bottom of the fastening bolt, and through holes connected with the temperature measuring element are formed in the protective sleeve and the inner side of the fastening bolt.

Through the design of the technical scheme, the whole thermocouple can be used more stably by utilizing the connecting terminal, the wire slot and the fastening bolt.

As a further improvement of the utility model, the bottom of the protective sleeve is hermetically connected with a circular plate through a limiting ring, the middle part of the inner side of the circular plate is fixedly connected with a reinforcing plate, and the middle part of the reinforcing plate is integrally formed with a bearing ring protruding from the surface to the center.

Through the design of the technical scheme, the circular plate can be matched with the supporting ring to be arranged so that the whole reinforcing plate can be installed better.

As a further improvement of the utility model, a combined sleeve is arranged on the outer side of the temperature measuring element, a ring body of the combined sleeve is connected with a circular ring through a positioning bolt, an annular bulge is fixedly connected to the outer side of the circular ring, and the annular bulge is matched with a plate body of the circular plate.

Through the design of the technical scheme, the combination sleeve can be matched with the ring to be arranged to be combined better under the action of the positioning bolt.

As a further improvement of the utility model, an annular groove which is sunken downwards from the surface is arranged between the plate body of the circular plate and the annular bulge, an epoxy resin plate is fixedly connected to the annular groove, and the plate body of the epoxy resin plate is attached to the measuring tip through an adhesive area.

Through the design of the technical scheme, the epoxy resin plate which is arranged can be attached to the measuring tip, so that the measuring tip can have more excellent corrosion resistance.

As a further improvement of the utility model, a plurality of positioning rings which are annularly arranged are arranged on the plate body of the circular plate and positioned on the outer side of the epoxy resin plate, and the positioning rings are connected with the outer side of the measuring tip through rivets.

The positioning ring arranged by the technical scheme can be matched with the epoxy resin plate, so that the positioning ring can be conveniently combined with a circular plate.

As a further improvement of the utility model, the inner side of the measuring tip and the inner side of the protective sleeve are both filled with heat conducting substances, the bottom of the measuring tip is provided with an oval end head arranged in a circular arc shape, and the oval end head and the bottom of the measuring tip are arranged in a plane.

Through the design of the technical scheme, the elliptical end head which is arranged by matching the measuring tip end is utilized, and the heat conducting substance can enable the temperature to be more rapidly combined with the temperature measuring element, so that the temperature measuring element can be better measured.

As a further improvement of the utility model, a group of heat conducting blocks and a group of combined clamping blocks are arranged on the inner side of the measuring tip, the heat conducting blocks and the combined clamping blocks are arranged in a staggered mode at intervals, and heat conducting silicone grease is filled between the heat conducting blocks and the combined clamping blocks.

Through the measure that the combination fixture block that the cooperation of the heat conduction piece that utilizes to set up of above-mentioned technical scheme design passes through the interval and adds the staggered arrangement, thereby can carry out abundant contact with heat conduction silicone grease and can contact with temperature element by the faster heat of letting.

Compared with the prior art, the utility model has the following beneficial effects:

the whole thermocouple can be better combined with the wiring terminal through the wire groove box arranged by matching the sealing cover, so that the normal use of the whole thermocouple is met, meanwhile, the epoxy resin plate arranged by matching the temperature measuring element can be matched with the positioning bolt and can be connected with the protective sleeve, so that the whole thermocouple can have better corrosion resistance when in use, and meanwhile, the heat can be better transmitted to the temperature measuring element by utilizing the heat conducting silicone grease through the combined clamping block arranged by matching the heat conducting block, so that the whole temperature measuring software can better measure the temperature.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic view of a fastening bolt and a temperature measuring element according to the present invention;

FIG. 2 is a schematic top view of a circular plate according to the present invention;

FIG. 3 is a schematic bottom view of the circular plate of the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention.

In the figure: 01. a wiring terminal; 02. a sealing cover; 03. a slot box; 04. fastening a bolt; 05. a protective sleeve; 06. combining the sleeve; 07. a circular plate; 08. a thermally conductive substance; 09. an elliptical tip; 10. a measuring tip; 11. a temperature measuring element; 12. a positioning ring; 13. an annular projection; 14. a pasting area; 15. a circular ring; 16. an epoxy board; 17. positioning the bolt; 18. a limiting ring; 19. a reinforcing plate; 20. a bearing ring; 21. a heat conducting block; 22. and combining the fixture blocks.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the utility model. That is, in some embodiments of the utility model, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1, 2 and 3, the corrosion-resistant platinum-rhodium thermocouple of the present invention includes a connection terminal 01, a wire groove box 03 and a fastening bolt 04 connected below the wire groove box 03, wherein one free end of the connection terminal 01 is connected to the outer side of the wire groove box 03 in a penetrating manner, the other free end of the connection terminal 01 is provided with a baffle, and a cable is inserted into the inner side of the connection terminal 01; the top of the wire groove box 03 is provided with a through hole which is obliquely arranged, a sealing cover 02 matched with the through hole is arranged above the through hole, and the sealing cover 02 is connected with the wire groove box 03 in a fastening bolt 04 connection mode; the top of fastening bolt 04 is linked together with the bottom of wire casing 03, and protective sheath 05 is installed to fastening bolt 04's bottom, and the through-hole that links to each other with temperature measurement element 11 is all seted up to protective sheath 05 and fastening bolt 04's inboard, through the design of above-mentioned technical scheme, utilizes binding post 01, wire casing and fastening bolt 04's effect can let the more stable use of whole thermocouple.

Referring to fig. 2, the bottom of the protective sleeve 05 is hermetically connected with a circular plate 07 through a limiting ring 18, the middle part of the inner side of the circular plate 07 is fixedly connected with a reinforcing plate 19, and a supporting ring 20 protruding from the surface to the center is integrally formed in the middle part of the reinforcing plate 19.

Referring to fig. 3, a combination sleeve 06 is installed on the outer side of the temperature measuring element 11, a ring body of the combination sleeve 06 is connected with a ring 15 through a positioning bolt 17, an annular protrusion 13 is fixedly connected to the outer side of the ring 15, and the annular protrusion 13 is matched with the plate body of the circular plate 07.

Referring to fig. 1, an annular groove which is recessed downwards from the surface is formed between a plate body of a circular plate 07 and an annular protrusion 13, an epoxy resin plate 16 is fixedly connected to the annular groove, the plate body of the epoxy resin plate 16 is attached to a measuring tip 10 through an attachment area 14, according to the above technical scheme, the measuring tip 10 can be attached to the epoxy resin plate 16 through the epoxy resin plate 16, so that the measuring tip 10 can have more excellent corrosion resistance, a plurality of annular positioning rings 12 are mounted at the outer side of the epoxy resin plate 16 at the plate body of the circular plate 07, the positioning rings 12 are connected to the outer side of the measuring tip 10 through rivets, and according to the above technical scheme, the positioning rings 12 can be adapted to the epoxy resin plate 16, so that the circular plate 07 can be conveniently combined.

Referring to fig. 4, the inner side of the measuring tip 10 and the inner side of the protective sleeve 05 are both filled with a heat conducting material 08, the bottom of the measuring tip 10 is provided with an oval end 09 arranged in a circular arc shape, the oval end 09 and the bottom of the measuring tip 10 are arranged in a plane, by the above technical scheme design, the temperature can be combined with the temperature measuring element 11 more rapidly by using the oval end 09 arranged in cooperation with the measuring tip 10, so that the temperature measuring element 11 can perform better measurement, the inner side of the measuring tip 10 is provided with a group of heat conducting blocks 21 and a group of combined fixture blocks 22, the heat conducting blocks 21 and the combined fixture blocks 22 are arranged in a staggered manner at intervals, heat conducting silicone grease is filled between the heat conducting blocks 21 and the combined fixture blocks 22, by the above technical scheme design, the combined fixture blocks 22 arranged in cooperation with the heat conducting blocks 21 are arranged in a staggered manner at intervals, can carry out abundant contact with heat conduction silicone grease and thus can let heat and temperature element 11 carry out the contact more fast.

In the use of the utility model:

firstly, a wiring terminal 01, a sealing cover 02, a wire slot box 03 and a fastening bolt 04 are communicated with a protective sleeve 05 to be connected in sequence, and then a temperature measuring element 11 is installed inside the protective sleeve 05;

after the temperature measuring element 11 is installed, the circular plate 07 is matched, the epoxy resin plate 16 can be better combined with the measuring tip 10, the heat conducting block 21 and the combined clamping block 22 which are connected inside the measuring tip 10 and the matching effect of the heat conducting silicone grease are utilized, the whole measuring tip 10 can better conduct temperature into the temperature measuring element 11, and therefore the effect of rapid temperature measurement is achieved.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a corrosion-resistant platinum rhodium thermocouple, includes binding post (01), wire casing (03) and connects fastening bolt (04) in wire casing (03) below, its characterized in that:

the wire connecting terminal comprises a wire connecting terminal (01), wherein one free end of the wire connecting terminal (01) is connected with the outer side of a wire slot box (03) in a penetrating mode, the other free end of the wire connecting terminal (01) is provided with a baffle, and a cable is inserted into the inner side of the wire connecting terminal (01);

the wire casing is characterized by comprising a wire casing box (03), wherein a through hole is formed in the top of the wire casing box (03) in an inclined mode, a sealing cover (02) matched with the through hole is arranged above the through hole, and the sealing cover (02) is connected with the wire casing box (03) in a fastening bolt (04) connecting mode;

the temperature measuring device comprises fastening bolts (04), the tops of the fastening bolts (04) are communicated with the bottom of the wire groove box (03), protective sleeves (05) are installed at the bottoms of the fastening bolts (04), and through holes connected with the temperature measuring elements (11) are formed in the inner sides of the protective sleeves (05) and the fastening bolts (04).

2. A corrosion-resistant platinum rhodium thermocouple according to claim 1, characterized in that: the bottom of protective sheath (05) has plectane (07) through spacing ring (18) sealing connection, the inboard middle part fixedly connected with gusset plate (19) of plectane (07), the middle part integrated into one piece of gusset plate (19) has from the surface to the bellied bearing ring (20) in center.

3. A corrosion-resistant platinum rhodium thermocouple according to claim 1, characterized in that: the temperature measuring device is characterized in that a combined sleeve (06) is installed on the outer side of the temperature measuring element (11), a ring body of the combined sleeve (06) is connected with a circular ring (15) through a positioning bolt (17), an annular bulge (13) is fixedly connected to the outer side of the circular ring (15), and the annular bulge (13) is matched with a plate body of the circular plate (07).

4. A corrosion-resistant platinum rhodium thermocouple according to claim 3, characterized in that: an annular groove which is sunken downwards from the surface is formed between the plate body of the circular plate (07) and the annular protrusion (13), an epoxy resin plate (16) is fixedly connected to the annular groove, and the plate body of the epoxy resin plate (16) is attached to the measuring tip (10) through an adhesion area (14).

5. A corrosion-resistant platinum rhodium thermocouple according to claim 3, characterized in that: the plate body of the circular plate (07) is positioned on the outer side of the epoxy resin plate (16) and is provided with a plurality of positioning rings (12) which are annularly arranged, and the positioning rings (12) are connected with the outer side of the measuring tip (10) through rivets.

6. The corrosion-resistant platinum-rhodium thermocouple of claim 4, wherein: the inner side of the measuring tip (10) and the inner side of the protective sleeve (05) are both filled with heat conducting substances (08), the bottom of the measuring tip (10) is provided with an oval end head (09) which is arranged in a circular arc shape, and the oval end head (09) and the bottom of the measuring tip (10) are arranged in a plane.

7. The corrosion-resistant platinum-rhodium thermocouple of claim 4, wherein: the inner side of the measuring tip (10) is provided with a group of heat conducting blocks (21) and a group of combined clamping blocks (22), the heat conducting blocks (21) and the combined clamping blocks (22) are arranged in a staggered mode at intervals, and heat conducting silicone grease is filled between the heat conducting blocks (21) and the combined clamping blocks (22).