CN211401471U

CN211401471U - Thermal resistor capable of realizing sealing under different insertion depths

Info

Publication number: CN211401471U
Application number: CN202020203629.7U
Authority: CN
Inventors: 刘振勇; 于淑萍
Original assignee: Jumo Automation Dalian Co ltd
Current assignee: Jumo Automation Dalian Co ltd
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2020-09-01
Anticipated expiration: 2030-02-21

Abstract

The utility model provides a can realize different sealed thermal resistance under inserting deeply, including temperature element, wire and protection tube, still include: the sealing device comprises a fixed seat, a sealing element and a fixed part, wherein a through hole is formed in the middle of the fixed seat and comprises a threaded hole and a conical hole; the sealing element is arranged in the conical hole, and the fixing element is provided with an external thread matched with the threaded hole; and a through hole for installing a protection tube is arranged between the sealing element and the fixing element. The utility model provides a pair of can realize that the difference inserts dark sealed thermal resistance down, through the cooperation of fixing base, mounting and sealing member, can adjust the inserting of thermal resistance dark, adapt to the different installation environment who inserts deeply to realize the difference and insert dark sealed down.

Description

Thermal resistor capable of realizing sealing under different insertion depths

Technical Field

The utility model relates to a temperature measurement thermal resistance field especially relates to a can realize different hot resistance of inserting dark underseal.

Background

Thermal resistance is one of the most commonly used temperature detectors in the medium and low temperature regions. Thermal resistance thermometry is based on the property that the resistance of a metal conductor increases with increasing temperature. For the installation of the thermal resistor, attention should be paid to the accuracy of temperature measurement, safety and reliability and convenience in maintenance. The thermal resistor with the protective sleeve has heat transfer and heat dissipation losses, the thermal resistor should have enough insertion depth in order to reduce measurement errors, the measuring end of the thermal resistor should be generally inserted into the center of a pipeline in the thermal resistor for measuring the temperature of fluid in the center of the pipeline, different insertion depths are needed for installation positions with different pipe diameters, and for measuring the temperature of high-temperature high-pressure and high-speed fluid (such as steam temperature), a shallow insertion mode of the protective sleeve can be adopted in order to reduce the resistance of the protective sleeve to the fluid and prevent the protective sleeve from being broken under the action of the fluid. Therefore, different insertion depths are required for installing the thermal resistors in different equipment or different temperature measurement positions.

However, the conventional thermal resistors are all fixed-insertion-depth thermal resistors, which are not interchangeable, and thus are inconvenient to install and use, and further, it is necessary to prepare each deep-insertion thermal resistor spare part, thereby increasing the workload of spare part management.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can realize different hot resistance of inserting sealed under the depth, can adjust the depth of inserting of hot resistance, adapt to the different installation environment of inserting deeply.

The utility model provides a can realize different sealed thermal resistance under inserting deeply, includes temperature element, wire and protection tube, still includes: the sealing device comprises a fixed seat, a sealing element and a fixed part, wherein a through hole is formed in the middle of the fixed seat and comprises a gradual-changing hole;

the sealing member is arranged in the gradually-changed hole, the contact position of the sealing member and the gradually-changed hole is continuous and closed in the direction surrounding the sealing member, and the fixing member is used for pressing the sealing member in the gradually-changed hole.

And a through hole for installing the protection tube is arranged between the sealing element and the fixing element.

Further, the gradual change hole is the bell mouth, the sealing member surface be equipped with gradual change hole complex conical surface.

Furthermore, the through hole also comprises a threaded hole, and the fixing piece is provided with an external thread matched with the threaded hole.

Further, the outer surface of the fixed seat is a spherical surface.

Furthermore, one end of the lead is welded with the temperature measuring element, the other end of the lead is soft-soldered on the base, and resin glue is coated at the welding point of the lead and the base.

Further, the protective tube is filled with heat conducting paste.

The utility model provides a pair of can realize that the difference inserts dark sealed thermal resistance down, through the cooperation of fixing base, mounting and sealing member, can adjust the inserting of thermal resistance dark, adapt to the different installation environment who inserts deeply to realize the difference and insert dark sealed down.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a thermal resistor capable of achieving sealing at different insertion depths, which is disclosed by the present invention;

FIG. 2 is a cross-sectional view of the fixing base of the present invention;

fig. 3 is a cross-sectional view of a seal member according to the present invention;

fig. 4 is a cross-sectional view of the middle fixing member of the present invention.

In the figure: 1. a temperature measuring element; 2. a wire; 3. a fixed seat; 31. a threaded hole; 32. a tapered hole; 4. a seal member; 41. a conical surface; 5. a fixing member; 6. protecting the tube; 7. a housing; 8. a base; 9. and (4) heat conducting paste.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 4, a thermal resistor capable of sealing under different insertion depths includes a temperature measuring element 1, a lead 2 and a protection tube 6, and further includes: the sealing device comprises a fixed seat 3, a sealing element 4 and a fixing element 5, wherein a through hole is formed in the middle of the fixed seat 3 and comprises a gradual-changing hole 32;

the sealing member 4 is provided in the tapered hole 32, the contact of the sealing member 4 with the tapered hole 32 is continuous and closed in the direction around the sealing member 4, and the fixing member 5 is used to press the sealing member 4 in the tapered hole 32.

A through hole for installing a protection tube is arranged between the sealing element 4 and the fixing element 5.

The fixing part 5 is characterized in that the sealing part 4 is pressed in the gradual change hole 32, the sealing part 4 is extruded by the gradual change hole 32 and deforms, the protection pipe is fastened, the protection pipe is fixed at a proper insertion depth and plays a role in sealing, and the sealing part 4 is made of PEEK materials.

The tapered hole 32 is a tapered hole, and the outer surface of the sealing member 4 is provided with a tapered surface 41 which is matched with the tapered hole 32. The through hole further comprises a threaded hole 31, and the fixing piece 5 is provided with an external thread matched with the threaded hole 31.

Fixing base 3 welds at the measurement port, then overlaps sealing member 4 and mounting 5 on protection tube 6 in proper order, passes fixing base 3 with the protection tube, inserts in the measurement medium. The protective tube is adjusted to the appropriate insertion depth, the fixing element 5 is screwed into the fixing seat 3 and the sealing element 4 is pushed into the conical bore 32, with the fixing element being screwed down gradually.

The installation form can realize repeated disassembly and assembly under the condition of no damage and ensure the sealing effect.

Further, the outer surface of the fixed seat 3 is a spherical surface. The existing fixing seat is generally a cylindrical fixing seat and can be welded only by a plane which can be matched with the existing fixing seat, and the spherical fixing seat can adapt to more interface forms and has better adaptability.

Furthermore, one end of the lead 2 is welded with the temperature measuring element 1, the other end of the lead 2 is soft-soldered on the base 8, and resin glue is coated at the welding point of the lead 2 and the base 8. The resin glue can reinforce the welding spot, and prevent the welding spot from falling off when the thermal resistor is applied to a vibrating environment.

Furthermore, the protective tube 6 is filled with the heat conducting paste 9, so that the measurement error of the temperature measuring element 1 can be reduced. The protection tube 6 is welded with the shell 7 in a laser mode, the base 8 is welded with the shell 7 in a laser mode, and the thermal resistor is protected in a sealing mode.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a can realize different sealed thermal resistance under inserting deeply, includes temperature element (1), wire (2) and protection tube (6), its characterized in that still includes: the sealing device comprises a fixed seat (3), a sealing element (4) and a fixing element (5), wherein a through hole is formed in the middle of the fixed seat (3), and comprises a gradual-changing hole (32);

the sealing element (4) is arranged in the tapered hole (32), the contact of the sealing element (4) and the tapered hole (32) is continuous and closed in the direction surrounding the sealing element (4), and the fixing element (5) is used for pressing the sealing element (4) in the tapered hole (32);

and a through hole for installing the protection tube is arranged between the sealing element (4) and the fixing element (5).

2. The thermal resistor capable of sealing under different insertion depths as claimed in claim 1, wherein the tapered hole (32) is a tapered hole, and the outer surface of the sealing member (4) is provided with a tapered surface (41) matched with the tapered hole (32).

3. The thermal resistor capable of achieving sealing under different insertion depths according to claim 1, wherein the through hole further comprises a threaded hole (31), and the fixing member (5) is provided with an external thread matched with the threaded hole (31).

4. The thermal resistor capable of achieving sealing under different insertion depths as claimed in claim 1, wherein the outer surface of the fixed seat (3) is spherical.

5. The thermal resistor capable of achieving sealing under different insertion depths as claimed in claim 1, wherein one end of the wire (2) is welded with the temperature measuring element (1), the other end of the wire (2) is soldered onto the base (8), and the welding point of the wire (2) and the base (8) is coated with resin glue.

6. Thermal resistor capable of sealing under different insertion depths according to claim 1, wherein the protection tube (6) is filled with a heat conductive paste (9).