CN219455328U

CN219455328U - Thermal resistor convenient to installation

Info

Publication number: CN219455328U
Application number: CN202320709116.7U
Authority: CN
Inventors: 钟天顺; 钟鸿燕; 王泽云
Original assignee: Hebei Taihua Instrument Technology Co ltd
Current assignee: Hebei Taihua Instrument Technology Co ltd
Priority date: 2023-04-03
Filing date: 2023-04-03
Publication date: 2023-08-01
Anticipated expiration: 2033-04-03

Abstract

The utility model discloses a thermal resistor convenient to install, which comprises a junction box, a protective sleeve and a protective tube, wherein the protective sleeve is embedded and installed in an opening at one end of the junction box, the protective tube is sleeved at one end of the protective sleeve far away from the junction box, a fixed sleeve shell is fixed on the outer wall of the protective sleeve, four fixed blocks are fixed on the outer wall of the fixed sleeve at equal intervals, a connecting flange is connected to the outer wall of the fixed sleeve, four first notches are arranged on the inner wall of the connecting flange at equal intervals in a spaced mode, a clamping assembly clamped in the first notches is arranged on the fixed blocks, limit grooves which are communicated with each other are formed in the outer wall of the fixed blocks, and clamping grooves are formed in the inner wall of the first notches, and the clamping assembly comprises a squeezing block which is installed in the limit grooves and is clamped in the clamping grooves. The utility model is convenient for the installation and the disassembly of the connecting flange and can quickly disassemble and assemble the thermal resistor.

Description

Thermal resistor convenient to installation

Technical Field

The utility model relates to the technical field of thermal resistors, in particular to a thermal resistor convenient to install.

Background

The thermal resistor is a temperature detector most commonly used in a medium-low temperature area, and the thermal resistor temperature measurement is based on the characteristic that the resistance value of a metal conductor increases along with the increase of temperature, and is mainly characterized by high measurement accuracy and stable performance, wherein the measurement accuracy of platinum thermal resistor is the highest, and the thermal resistor is widely applied to industrial temperature measurement and is manufactured into a standard reference instrument; the thermal resistor is mainly made of pure metal materials, mainly comprises a basic structure composed of a junction box, a protection tube, a junction terminal, an insulating sleeve and a temperature sensing element, and is matched with various mounting and fixing devices;

at present, the connection mode of the protection sleeve and the flange generally adopts a welding mode, so that the problems of abrasion corrosion of the hot end of the protection sleeve, acid gas corrosion, hydrogen corrosion cracking and the like of a welding area of the root of the flange exist.

Therefore, in view of this current situation, there is an urgent need to design and produce a thermal resistor that is easy to install to meet the needs of practical use.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a thermal resistor convenient to install.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a thermal resistor convenient to installation, includes terminal box, protective sheath and protective tube, embedding installation protective sheath in the one end opening of terminal box, protective sheath keeps away from terminal box one end cover and establishes the protective tube, protective sheath's outer wall is fixed with fixed sleeve shell, fixed sleeve's outer wall equidistance is fixed with four fixed blocks, fixed sleeve's outer wall connection has flange, flange's inner wall equidistance leaves and is equipped with four first notches, be provided with the joint subassembly of joint in first notch on the fixed block.

As a further scheme of the utility model, the outer wall of the fixed block is provided with mutually communicated limiting grooves, the inner wall of the first notch is provided with clamping grooves, and the clamping assembly comprises a squeezing block which is arranged in the limiting grooves and is clamped in the clamping grooves.

As a further scheme of the utility model, the clamping assembly comprises an extrusion rod fixed at one end of the extrusion block far away from the clamping groove, the other end of the extrusion rod penetrates through the limiting groove, a limiting sleeve fixed on the inner wall of the fixed block is sleeved on the outer wall of the extrusion rod in a sliding manner, and a spring fixed with the extrusion block and the limiting sleeve is arranged on the outer wall of the limiting sleeve.

As a further scheme of the utility model, an internal thread ring is fixed on one side of the connecting flange far away from the junction box, an external thread ring is connected in the internal thread ring in a threaded manner, a second notch is formed on one side of the first notch, a pressure head is arranged on the inner wall of the second notch in a sliding manner, and four extrusion columns matched with the second notch are fixed on one side of the external thread ring at equal intervals.

As a further scheme of the utility model, one end of the extrusion rod, which is far away from the extrusion block, is fixed with a semicircle sphere.

As a further scheme of the utility model, four handles are fixed on one side of the external thread ring far away from the connecting flange at equal intervals.

As a further scheme of the utility model, the outer wall of the extrusion block, which is close to the clamping groove, is provided with an arc-shaped structure.

The beneficial effects of the utility model are as follows:

the utility model comprises the following steps: firstly, the protective tube is disassembled, then the connecting flange is taken out, a first notch on the inner wall of the connecting flange corresponds to a fixed block for fixing the outer wall of the casing, then the fixed block is embedded in the first notch, the extrusion block is extruded, the extrusion block is contracted in the limiting groove and the spring is contracted, the extrusion block is completely clamped in the clamping groove, the connecting flange is fixed, the outer wall of the extrusion block is of an arc-shaped structure, the connecting flange is convenient to assemble and disassemble, and the thermal resistor is quickly assembled and disassembled;

the utility model comprises the following steps: in order to further fix the connecting flange, the external thread ring is in threaded connection with the internal thread ring on the fixed sleeve shell, so that the extrusion column on the external thread ring can be embedded in the second notch and extrude the extrusion rod, the extrusion rod extrudes the extrusion block, the extrusion block is completely embedded in the clamping groove to be fixed, and the connecting flange is effectively fixed.

The utility model comprises the following steps: one end of extrusion piece is kept away from to the extrusion pole is fixed with the semicircle ball, utilizes the setting of semicircle ball, extrusion post extrusion semicircle ball that can be better makes the extrusion pole shrink for the extrusion piece forms stable extrusion for flange joint is stable.

Drawings

FIG. 1 is a schematic perspective view of a thermal resistor of the present utility model;

FIG. 2 is a schematic view of a thermal resistor with a partial perspective structure for easy installation according to the present utility model;

FIG. 3 is a schematic view showing a partial structure of a thermal resistor with a fixed casing for easy installation according to the present utility model;

fig. 4 is an enlarged schematic view of the thermal resistor of fig. 2 a for easy installation according to the present utility model.

In the figure: 1. a junction box; 2. a protective sleeve; 3. a protective tube; 4. a connecting flange; 5. an internally threaded ring; 6. fixing the casing; 7. an external threaded ring; 8. a first notch; 9. a second notch; 10. a fixed block; 11. a handle; 12. extruding a block; 13. an extrusion rod; 14. a spring; 15. a limit sleeve; 16. a semicircle sphere; 17. a limit groove; 18. a pressure head.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1-4, a thermal resistor convenient to installation, including terminal box 1, protection sleeve 2 and protection tube 3, embedding installation protection sleeve 2 in the one end opening of terminal box 1, protection sleeve 2 keeps away from terminal box 1 one end cover and establishes protection tube 3, the outer wall of protection sleeve 2 is fixed with fixed cover shell 6, the outer wall equidistance of fixed cover shell 6 is fixed with four fixed blocks 10, the outer wall connection of fixed cover shell 6 has flange 4, the inner wall equidistance of flange 4 leaves and is equipped with four first notch 8, be provided with the joint subassembly of joint in first notch 8 on the fixed block 10.

In this embodiment, the outer wall of the fixing block 10 is provided with a limit groove 17 which is mutually communicated, the inner wall of the first notch 8 is provided with a clamping groove, and the clamping assembly comprises an extrusion block 12 which is installed in the limit groove 17 and is clamped in the clamping groove.

In this embodiment, the joint subassembly is including fixing the extrusion stem 13 of keeping away from draw-in groove one end at extrusion piece 12, and the spacing groove 17 is passed to the other end of extrusion stem 13, and the outer wall slip cap of extrusion stem 13 is equipped with the stop collar 15 of fixing at the fixed block 10 inner wall, and stop collar 15 outer wall is provided with the spring 14 fixed with extrusion piece 12 and stop collar 15.

In this embodiment, the connecting flange 4 is fixed with the internal thread ring 5 far away from one side of terminal box 1, and internal thread ring 5 internal thread is connected with external thread ring 7, and second notch 9 has been seted up to first notch 8 one side, and the inner wall slip of second notch 9 is provided with pressure head 18, and one side equidistance of external thread ring 7 is fixed with four and the extrusion post of second notch 9 adaptation.

In this embodiment, the end of the extrusion rod 13 away from the extrusion block 12 is fixed with a semi-sphere 16, and by using the arrangement of the semi-sphere 16, the extrusion column can better extrude the semi-sphere 16 to shrink the extrusion rod 13, so as to stably extrude the extrusion block 12, and the connection of the connecting flange 4 is stable.

In this embodiment, four handles 11 are fixed to the side of the externally threaded ring 7 away from the connecting flange 4 at equal intervals.

In this embodiment, the extrusion block 12 is disposed in an arc-shaped structure near the outer wall of the clamping groove.

Working principle: when the thermal resistor is used, the protective tube 3 is disassembled firstly, then the connecting flange 4 is taken out, the first notch 8 on the inner wall of the connecting flange 4 corresponds to the fixed block 10 on the outer wall of the fixed sleeve 6, then the fixed block 10 is embedded in the first notch 8 to extrude the extruding block 12, so that the extruding block 12 is contracted in the limiting groove 17 and the spring 14 is contracted, the extruding block 12 is completely clamped in the clamping groove, the connecting flange 4 is fixed, the outer wall of the extruding block 12 is of an arc-shaped structure, the installation and the disassembly of the connecting flange 4 are facilitated, and the thermal resistor is quickly disassembled and assembled;

further, in order to further fix the strong pair of connecting flanges 4, the external thread ring 7 is in threaded connection with the internal thread ring 5 on the fixed sleeve 6, so that the extrusion column on the external thread ring 7 can be embedded in the second notch 9 and extrude the extrusion rod 13, so that the extrusion rod 13 extrudes the extrusion block 12, and the extrusion block 12 is completely embedded in the clamping groove to fix the connecting flanges 4 effectively.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be capable of being practiced otherwise than as specifically illustrated and described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a thermal resistor convenient to installation, includes terminal box (1), protective case (2) and protective tube (3), its characterized in that: the utility model discloses a terminal box, including terminal box (1), protection sleeve (2) are kept away from terminal box (1) one end cover and are established protection tube (3), the outer wall of protection sleeve (2) is fixed with fixed cover shell (6), the outer wall equidistance of fixed cover shell (6) is fixed with four fixed blocks (10), the outer wall connection of fixed cover shell (6) has flange (4), the inner wall equidistance of flange (4) leaves and is equipped with four first notch (8), be provided with the joint subassembly of joint in first notch (8) on fixed block (10).

2. The thermal resistor convenient to install according to claim 1, wherein the outer wall of the fixed block (10) is provided with mutually communicated limiting grooves (17), the inner wall of the first notch (8) is provided with clamping grooves, and the clamping assembly comprises an extrusion block (12) which is installed in the limiting grooves (17) and clamped in the clamping grooves.

3. The thermal resistor convenient to install according to claim 2, wherein the clamping assembly comprises an extrusion rod (13) fixed at one end of the extrusion block (12) far away from the clamping groove, the other end of the extrusion rod (13) penetrates through the limiting groove (17), a limiting sleeve (15) fixed on the inner wall of the fixed block (10) is arranged on the outer wall sliding sleeve of the extrusion rod (13), and a spring (14) fixed with the extrusion block (12) and the limiting sleeve (15) is arranged on the outer wall of the limiting sleeve (15).

4. A thermal resistor convenient to install according to claim 3, characterized in that one side of the connecting flange (4) away from the junction box (1) is fixed with an inner threaded ring (5), the inner threaded ring (5) is connected with an outer threaded ring (7) in an inner threaded manner, a second notch (9) is formed in one side of the first notch (8), a pressure head (18) is slidably arranged on the inner wall of the second notch (9), and four extrusion columns matched with the second notch (9) are fixed on one side of the outer threaded ring (7) at equal intervals.

5. A thermal resistor according to claim 4, characterized in that the end of the extrusion rod (13) remote from the extrusion block (12) is fixed with a semi-sphere (16).

6. A thermal resistor according to claim 5, characterized in that four handles (11) are fixed equidistant on the side of the externally threaded ring (7) remote from the connecting flange (4).

7. A thermal resistor according to claim 6, characterized in that the extrusion block (12) is arranged in an arc-shaped configuration near the outer wall of the clamping groove.