Thermometer protection sleeve with flexibility

Abstract

The utility model relates to the technical field of thermometer protection sleeves, and provides a thermometer protection sleeve with flexibility, which comprises a rigid pipe (1), a flexible pipe (2) and a mounting pipe (3), one end of the flexible pipe (2) is connected with the rigid pipe (1), the other end of the flexible pipe (2) is connected with the mounting pipe (3), and a mounting flange (4) is arranged on the outer side of the mounting pipe (3). Through the arrangement of the flexible pipe, the thermometer protection sleeve can better adapt to misalignment or deformation of a measurement hole, and can better adapt to unparallel and misalignment of installation of an installation flange, so that the thermometer protection sleeve is not easy to damage, and temperature measurement is not easy to fail. The thermometer protective sleeve not only effectively solves the problems of installation, maintenance and replacement of the thermometer protective sleeve, but also is not easy to damage, so that the service life of the thermometer is prolonged, the operation cost of the device is reduced, and the safety of temperature measurement is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of thermometer protection sleeves, and more specifically, to a flexible thermometer protection sleeve. Background Art

[0002] At present, the thermometer protection sleeve is designed and manufactured according to the standards such as HGT 21581-2012 automatic control installation atlas. The protection sleeve is made of metal or non-metallic materials, and the sleeve is a rigid structure. Its shortcomings are: when the thermometer protection sleeve is made of fragile materials such as corundum, alumina, ceramics, silicon carbide, and when the thermometer process installation flange surface is not installed parallel, or the temperature measurement hole is deformed, the thermometer protection sleeve and the temperature sensor are easily damaged; the rupture of the sleeve often leads to the leakage of dangerous media, endangering the safety of equipment and personnel. To solve this problem, the usual practice is to replace the thermometer, replace the thermometer sleeve, stop the process, or temporarily let the monitoring point fail and wait for the opportunity to stop the process. For example, the technical solution disclosed in the patent with application number CN202223269987.6 is to weld multiple reinforcement strips on the outer wall of the sleeve body, which can effectively improve the strength of the sleeve body. However, in actual applications, when the temperature measurement hole is a masonry lining structure, the masonry is prone to settlement and deformation, and the masonry will clamp the rigid thermometer protective sleeve or squeeze and break it; in addition, for flange-mounted thermometers, even a slight non-parallel installation between the flanges can easily cause the thermometer protective sleeve to break or crack, thereby damaging the temperature measuring element and causing measurement failure. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a flexible thermometer protective sleeve to solve the technical problem in the prior art that the thermometer protective sleeve is easily broken or snapped due to masonry deformation or uneven flange installation, thereby causing damage to the temperature measuring element.

[0004] In order to achieve the above purpose, the technical solution adopted in the present application is: to provide a flexible thermometer protective sleeve, including: a rigid tube, a flexible tube and an installation tube, one end of the flexible tube is connected to the rigid tube, and the other end is connected to the installation tube.

[0005] In one embodiment, the flexible tube is a metal bellows.

[0006] In one embodiment, the metal bellows has at least one wave crest and one wave trough.

[0007] In one embodiment, the rigid pipe and the flexible pipe are threadedly connected, welded, or glued.

[0008] In one embodiment, the flexible tube is threadedly connected to the installation tube, welded to the installation tube, or bonded to the installation tube by adhesive.

[0009] In one embodiment, the total length of the rigid pipe and the flexible pipe is 600 mm, and the distance between the bolt circle hole of the mounting flange and the center line of the pipe is 60 mm.

[0010] In one embodiment, a mounting flange is provided on the outer side of the mounting tube.

[0011] The beneficial effect of the flexible thermometer protective sleeve provided by the present application is that: by providing a flexible tube, the thermometer protective sleeve can better adapt to the misalignment or deformation of the measuring hole, and can better adapt to the non-parallelism and misalignment of the installation between the process flanges, so the thermometer protective sleeve is not easily damaged, and the temperature measurement is not prone to failure.

[0012] The thermometer protective sleeve not only effectively solves the difficult problems in installation, maintenance and replacement of the thermometer protective sleeve, but also the thermometer protective sleeve is not easily damaged, so that the service life of the thermometer is increased, the operating cost of the device is reduced, and the safety of temperature measurement is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 A schematic cross-sectional view of a flexible thermometer protective sleeve provided in an embodiment of the present application;

[0015] Figure 2 A schematic diagram of the structure of a flexible thermometer protective sleeve provided in an embodiment of the present application being normally installed on a furnace body;

[0016] Figure 3 A schematic structural diagram of a state in which the masonry of a furnace body is deformed after the flexible thermometer protection sleeve provided in an embodiment of the present application is installed;

[0017] Figure 4 A schematic diagram of the structure of a flexible thermometer protective sleeve provided in an embodiment of the present application in a state where the flanges are not parallel during installation.

[0018] Among them, the reference numerals in the figure are:

[0019] 1. Rigid pipe; 2. Flexible pipe; 3. Mounting pipe; 4. Mounting flange. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0021] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] like Figure 1-Figure 2 As shown, a flexible thermometer protective sleeve provided in an embodiment of the present application is now described. The flexible thermometer protective sleeve comprises: a rigid tube 1, a flexible tube 2 and a mounting tube 3 connected in sequence, one end of the rigid tube 1 is a closed end, and the other end is an open end, and both ends of the flexible tube 2 and the mounting tube 3 are open ends; one end of the flexible tube 2 is connected to the open end of the rigid tube 1, and the other end is connected to the mounting tube 3, and a mounting flange 4 is provided on the outside of the mounting tube 3. The function of the mounting flange 4 is to connect the fixed flange on the masonry of the furnace body, so as to fix the thermometer protective sleeve in the measuring hole of the furnace body. In other embodiments, the mounting tube 3 can be fixedly installed on the furnace body by a ferrule. In this embodiment, the aperture of the measuring hole is 50 mm, and the outer diameter of the rigid tube 1 is 24 mm. Therefore, the thermometer protective sleeve has a certain deformation space in the measuring hole; so that the flexible tube 2 can play its role and avoid damage to the tube body and damage to the thermometer.

[0025] In this embodiment, the flexible tube 2 can be made of metal material, non-metal material, or a composite layer structure of metal material and non-metal material; when metal material is selected, the flexible tube 2 is a metal bellows; when non-metal material is selected, the flexible tube 2 is made of elastic material, such as high temperature resistant rubber; the composite layer structure is an outer layer of metal material and an inner layer of elastic material.

[0026] Specifically, when the flexible tube 2 is a metal bellows, the metal bellows has at least one crest and one trough, so that the flexible tube 2 has a certain deformation ability.

[0027] In this embodiment, the rigid tube 1 and the flexible tube 2 are connected by threads, welding or adhesive bonding. The flexible tube 2 and the installation tube 3 are connected by threads, welding or adhesive bonding.

[0028] In this embodiment, the total length of the rigid tube 1 and the flexible tube 2 is 600 mm, and the distance between the bolt circular hole on the mounting flange 4 and the center line of the tube is 60 mm.

[0029] like Figure 3 As shown, when the masonry undergoes settlement deformation, the presence of the flexible tube 2 can effectively adapt to the settlement deformation of the masonry without damage, effectively ensuring the normal use of the thermometer. Figure 4 As shown, when the mounting flange 4 and the fixed flange on the masonry are installed with deviation and not parallel, the problem of the thermometer protective sleeve being broken due to the manufacturing and installation deviation can be effectively solved by the flexible tube 2.

[0030] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A flexible thermometer protective sleeve, characterized in that: include: A rigid tube (1), a flexible tube (2) and a mounting tube (3), wherein one end of the flexible tube (2) is connected to the rigid tube (1), and the other end is connected to the mounting tube (3).

2. The flexible thermometer protective sleeve according to claim 1, characterized in that: The flexible tube (2) is a metal bellows.

3. The flexible thermometer protective sleeve according to claim 2, characterized in that: The metal bellows has at least one wave crest and one wave trough.

4. The flexible thermometer protective sleeve according to claim 3, characterized in that: The rigid pipe (1) and the flexible pipe (2) are threadedly connected, welded or glued.

5. The flexible thermometer protective sleeve according to claim 4, characterized in that: The flexible tube (2) and the mounting tube (3) are threadedly connected, welded, or glued together.

6. The flexible thermometer protective sleeve according to claim 4, characterized in that: A mounting flange (4) is provided on the outer side of the mounting pipe (3).

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