An explosion-proof temperature sensor

Abstract

The utility model discloses a kind of explosion-proof temperature sensors, including main casing, shell cover is equipped on main casing upper side, temperature transmitting module is equipped in main casing, high temperature wire is equipped in one side of main casing, platinum resistance is connected with one end of high temperature wire, the other end is inserted into main casing from main casing lower side and is connected in temperature transmitting module, explosion-proof sheath is equipped in high temperature wire and platinum resistance outside, installation structure is equipped in explosion-proof sheath outside, installation piece is connected with one end of explosion-proof sheath close to main casing, installation piece is connected in main casing.The utility model is connected between explosion-proof sheath and main casing by installation piece, welding between installation piece and explosion-proof sheath, improve the sealing stability effect of connection, improve the safety of wire in explosion-proof sheath;Meanwhile, installation piece is also further connected in main casing by fixed bolt, improve the connection stability, reduce the negative influence brought under vibration working condition.

Description

Technical Field

[0001] This utility model relates to the field of temperature detection equipment technology, specifically an explosion-proof temperature sensor. Background Technology

[0002] A Chinese utility model patent with application number 201220045942.8 discloses an explosion-proof thermometer, which improves the explosion-proof performance of the thermometer by setting an explosion-proof protective sleeve and setting threads on each component to improve disassembly and installation performance. However, in the above structure, the threaded connection between each component may loosen under vibration working environment. If the structure is loose and the sealing effect is reduced, the internal components may be affected by external explosion impact, that is, its explosion-proof performance will be reduced, and there is room for improvement. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the aforementioned background technology by providing a temperature sensor with a simple and stable structure and good explosion-proof performance.

[0004] To achieve the above objectives, this utility model provides an explosion-proof temperature sensor, which adopts the following technical solution:

[0005] An explosion-proof temperature sensor includes a main housing with a cover on its upper side. A temperature transmission module is housed inside the main housing. A high-temperature wire is provided on one side of the main housing. One end of the high-temperature wire is connected to a platinum resistance thermometer, and the other end extends from the lower side of the main housing into the main housing and is connected to the temperature transmission module. An explosion-proof sleeve is provided outside the high-temperature wire and the platinum resistance thermometer. An installation structure is provided outside the explosion-proof sleeve. An installation component is connected to the end of the explosion-proof sleeve near the main housing, and the installation component is connected to the main housing.

[0006] A further improvement of this invention, an explosion-proof temperature sensor, is that the end of the explosion-proof sheath away from the main housing is sealed, including a sealing plate that is welded to the explosion-proof sheath.

[0007] A further improvement of this invention for an explosion-proof temperature sensor is that the lower part of the main housing includes a connecting part, which is a hollow cylindrical shape and has a thread on the inner side. The mounting part has a T-shaped cross-section and includes a threaded part and a fixing part. The mounting part is hollow and is used for the explosion-proof sheath to pass through. The threaded part is threaded to the connecting part, and the fixing part is welded to the explosion-proof sheath.

[0008] A further improvement of this explosion-proof temperature sensor is that the fixing part is provided with an annular inner groove, and a sealing ring is provided in the annular inner groove, the sealing ring abutting against the connecting part.

[0009] A further improvement of this explosion-proof temperature sensor is that the connecting part is also provided with a fixing screw hole perpendicular to the threaded part, and a fixing bolt is provided at the fixing screw hole, the fixing bolt abutting against the threaded part.

[0010] A further improvement of this explosion-proof temperature sensor is that the mounting structure includes a threaded connector for connecting to an externally located structure being measured.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The explosion-proof sleeve of this utility model is connected to the main housing through an installation component. The installation component is welded to the explosion-proof sleeve to improve the connection sealing stability and enhance the safety of the wires inside the explosion-proof sleeve. At the same time, the installation component is further connected to the main housing through fixing bolts, which improves the connection stability and reduces the negative impact of vibration during operation. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0014] Figure 1 , Figure 2 This is a schematic diagram of the structure of this utility model;

[0015] In the diagram: 1 Main housing, 2 Housing cover, 3 High-temperature wire, 4 Platinum resistance thermometer, 5 Explosion-proof sleeve, 6 Sealing plate, 7 Mounting structure, 8 Connecting part, 9 Mounting part, 10 Threaded part, 11 Fixing part, 12 Annular inner groove, 13 Sealing ring, 14 Fixing bolt, 15 Temperature transmitter module. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0020] like Figure 1 and Figure 2 As shown, an explosion-proof temperature sensor includes a main housing 1, a cover 2 on the upper side of the main housing, a temperature transmission module 15 inside the main housing, a high-temperature wire 3 on one side of the main housing, one end of the high-temperature wire being connected to a platinum resistance thermometer 4, and the other end extending from the lower side of the main housing into the main housing and connected to the temperature transmission module. An explosion-proof sleeve 5 is provided outside the high-temperature wire and the platinum resistance thermometer, and an installation structure 7 is provided outside the explosion-proof sleeve. An installation component 9 is connected to the end of the explosion-proof sleeve near the main housing, and the installation component is connected to the main housing.

[0021] The explosion-proof sleeve has a sealing feature at the end furthest from the main housing, including a sealing plate 6, which is welded to the explosion-proof sleeve. The sealing plate is made of the same material as the explosion-proof sleeve.

[0022] The lower part of the main housing includes a connecting part 8, which is a hollow cylindrical shape. The connecting part has a thread on its inner side. The mounting part has a T-shaped cross section and includes a threaded part 10 and a fixing part 11. The mounting part is hollow and is used for the explosion-proof sleeve to pass through. The threaded part is threaded to the connecting part, and the fixing part is welded to the explosion-proof sleeve.

[0023] The fixing part is provided with an annular inner groove 12, and a sealing ring 13 is provided in the annular inner groove, which abuts against the connecting part.

[0024] The connecting part is also provided with a fixing screw hole perpendicular to the threaded part, and a fixing bolt 14 is provided at the fixing screw hole, which abuts against the threaded part. This further improves the stability of the mounting part connected to the main housing.

[0025] The mounting structure includes a threaded connector for connecting to an external structure under test. The mounting structure is an existing design.

[0026] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An explosion-proof temperature sensor, characterized in that, The device includes a main housing with a cover on its upper side. A temperature transmitter module is located inside the main housing. A high-temperature conductor is located on one side of the main housing. One end of the high-temperature conductor is connected to a platinum resistance thermometer, and the other end extends from the lower side of the main housing and into the main housing to connect to the temperature transmitter module. An explosion-proof sleeve is provided on the outside of the high-temperature conductor and the platinum resistance thermometer. An installation structure is provided on the outside of the explosion-proof sleeve. An installation component is connected to the end of the explosion-proof sleeve near the main housing, and the installation component is connected to the main housing.

2. The explosion-proof temperature sensor according to claim 1, characterized in that, The explosion-proof sleeve is sealed at the end away from the main housing, including a sealing plate that is welded to the explosion-proof sleeve.

3. The explosion-proof temperature sensor according to claim 2, characterized in that, The lower part of the main housing includes a connecting part, which is a hollow cylindrical shape and has threads on the inner side. The mounting part has a T-shaped cross-section and includes a threaded part and a fixing part. The mounting part is hollow and is used for the explosion-proof sleeve to pass through. The threaded part is threaded to the connecting part, and the fixing part is welded to the explosion-proof sleeve.

4. The explosion-proof temperature sensor according to claim 3, characterized in that, The fixing part is provided with an annular inner groove, and a sealing ring is provided in the annular inner groove, which abuts against the connecting part.

5. The explosion-proof temperature sensor according to claim 4, characterized in that, The connecting part is also provided with a fixing screw hole perpendicular to the threaded part, and a fixing bolt is provided at the fixing screw hole, the fixing bolt abutting against the threaded part.

6. The explosion-proof temperature sensor according to claim 5, characterized in that, The mounting structure includes a threaded connector for connecting to an externally positioned structure under test.

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