An explosion-proof armored temperature sensor

Abstract

The utility model provides an explosion-proof armored temperature sensor, belonging to the technical field of temperature sensors; including: a junction box; a protective tube, arranged on the junction box; an armor layer, arranged in the protective tube, the armor layer including: a plurality of first deformation plates, arranged in the armor layer, used to absorb the internal pressure of the sensor; a plurality of second deformation plates, arranged in the armor layer, used to buffer the pressure on the sensor. The utility model provides a first deformation plate, a second deformation plate and a supporting connecting rib, the second deformation plate first deforms to absorb energy, acting as a primary protective barrier, once the second deformation plate reaches its deformation limit, the supporting connecting rib begins to deform, further absorbing the remaining energy, and finally the first deformation plate absorbs the remaining energy, forming a hierarchical protection mechanism, absorbing and dispersing pressure, and preventing pressure from directly acting on the sensitive element of the sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature sensors, in particular to an explosion-proof armored temperature sensor. Background Art

[0002] In oil and gas fields, refineries, gas stations and other storage tank areas, these places not only have flammable and explosive gases, but may also face high temperature and high pressure environments, which have strict requirements for temperature monitoring. They need a device designed specifically for measuring temperature in flammable and explosive dangerous environments.

[0003] At present, the existing temperature sensors will face mechanical stress caused by medium expansion or sudden changes in external pressure under high temperature and high pressure environment. The sensors cannot absorb or transfer external pressure. The external pressure will directly act on the sensitive elements of the sensor, causing damage to the sensitive elements and affecting the accuracy of the measurement. Therefore, this application provides an explosion-proof armored temperature sensor to meet the needs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an explosion-proof armored temperature sensor to solve the problem that the existing temperature sensor generates external pressure in a high temperature and high pressure environment, and the external pressure directly acts on the sensitive element of the sensor.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] An explosion-proof armored temperature sensor comprises: a junction box; a protective tube, arranged on the junction box; an armor layer, arranged in the protective tube, the armor layer comprising: a plurality of first deformation plates, arranged in the armor layer, for absorbing the internal pressure of the sensor; a plurality of second deformation plates, arranged in the armor layer, for buffering the pressure exerted on the sensor; and the first deformation plates are located on one side of the inner wall of the armor layer, and the second deformation plates are located on the other side of the inner wall of the armor layer; a supporting connecting rib, arranged between the first deformation plate and the second deformation plate, for transmitting force between the first deformation plate and the second deformation plate; an insulating tube, arranged in the armor layer; and a temperature sensing element, arranged in the insulating tube.

[0007] It also includes: the first deformation plate and the second deformation plate are curved.

[0008] It also includes: the distance between the first deformation plate and the second deformation plate is the same.

[0009] It also includes: a mounting portion, which is arranged at the bottom of the protection tube; a probe, which is arranged on the mounting portion; and a heat-conducting block, which is arranged in the mounting portion, and one side of the heat-conducting block passes through the mounting portion and contacts with the temperature sensing element.

[0010] The probe comprises: a tube shell, which is arranged on the mounting portion, and one side of the tube shell extends into the mounting portion, and the top of the tube shell contacts the heat conduction block; a liquid wick, which is arranged in the tube shell; and a low boiling point liquid, which is arranged in the liquid wick.

[0011] It also includes: the side of the tube shell where the low-boiling-point liquid is provided is an evaporation end.

[0012] It also includes: the other side of the tube shell is a condensation end.

[0013] Compared with the prior art, the utility model has at least the following beneficial effects:

[0014] In the above scheme, by setting the first deformable plate, the second deformable plate and the supporting connecting ribs, the second deformable plate first deforms to absorb energy and acts as a primary protective barrier. Once the second deformable plate reaches its deformation limit, the supporting connecting ribs begin to deform and further absorb the remaining energy, which is finally absorbed by the first deformable plate, forming a graded protection mechanism to absorb and disperse pressure and prevent pressure from directly acting on the sensitive elements of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the explosion-proof armored temperature sensor;

[0017] Figure 2 It is a cross-sectional view of the probe structure;

[0018] Figure 3 This is a bottom view of the protection pipe structure;

[0019] Figure 4 This is a cross-sectional view of the armor layer structure.

[0020] [Reference Signs]

[0021] 1. Junction box; 2. Protective tube; 3. Mounting part; 4. Probe tube; 5. Heat-conducting block; 6. Armor layer; 7. Insulating tube; 8. Temperature sensing element; 41. Tube shell; 42. Low-boiling-point liquid; 43. Liquid-absorbing core; 61. First deformation plate; 62. Second deformation plate; 63. Supporting connecting ribs.

[0022] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0023] The following is a detailed description of an explosion-proof armored temperature sensor provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0024] like Figure 1 , Figure 3 and Figure 4 As shown, an embodiment of the utility model provides an explosion-proof armored temperature sensor, comprising: a junction box 1; a protective tube 2, arranged on the junction box 1; an armor layer 6, arranged in the protective tube 2, the armor layer 6 comprising: a plurality of first deformation plates 61, arranged in the armor layer 6, for absorbing the internal pressure of the sensor; a plurality of second deformation plates 62, arranged in the armor layer 6, for buffering the pressure exerted on the sensor; and the first deformation plates 61 are located on one side of the inner wall of the armor layer 6, and the second deformation plates 62 are located on the other side of the inner wall of the armor layer 6; a supporting connecting rib 63, arranged between the first deformation plate 61 and the second deformation plate 62, for transmitting force between the first deformation plate 61 and the second deformation plate 62; an insulating tube 7, arranged in the armor layer 6; a temperature sensing element 8, arranged in the insulating tube 7.

[0025] By setting the first deformation plate 61, the second deformation plate 62 and the supporting connecting ribs 63, the second deformation plate first deforms to absorb energy and acts as a primary protective barrier. Once the second deformation plate 62 reaches its deformation limit, the supporting connecting ribs 63 begin to deform and further absorb the remaining energy, which is finally absorbed by the first deformation plate 61, forming a graded protection mechanism.

[0026] like Figure 1 , Figure 3 and Figure 4 As shown, the first deformable plate 61 and the second deformable plate 62 are in a curved shape. By setting the curved shape, the curved shape can provide a larger deformation space when subjected to force compared to the planar structure, especially in the radial direction along the curve, so that the deformable plate can absorb more energy in a limited space, thereby improving the overall buffering and shock absorption effect.

[0027] like Figure 1 , Figure 3 and Figure 4 As shown, the first deformation plate 61 and the second deformation plate 62 are spaced the same. The first deformation plate 61 and the second deformation plate 62 are spaced the same, which helps to control the deformation sequence and mode of the deformation plates, ensuring that the second deformation plate 62 starts to deform first, and then the supporting connecting ribs 63 and the first deformation plate 61 respond in sequence according to the pre-designed mechanism, forming an orderly pressure absorption process.

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, it also includes: a mounting portion 3, which is arranged at the bottom of the protective tube 2; a probe tube 4, which is arranged on the mounting portion 3; a heat conductive block 5, which is arranged in the mounting portion 3, and one side of the heat conductive block 5 passes through the mounting portion 3 and contacts with the temperature sensing element 8.

[0029] By setting up a heat-conducting block 5, heat can be transferred. A metal block, such as a copper block or an aluminum block, can be directly connected to the condensation end of the tube shell 41 due to its high thermal conductivity, or can be in contact with the tube shell 41 by welding, screw fixing, etc., thereby transferring heat to the temperature sensing element 8.

[0030] like Figure 2 As shown, the probe 4 includes: a tube shell 41, which is arranged on the mounting portion 3, and one side of the tube shell 41 extends into the mounting portion 3, and the top of the tube shell 41 is in contact with the heat conductive block 5; a liquid absorbent core 43, which is arranged in the tube shell 41; and a low boiling point liquid 42, which is arranged in the liquid absorbent core 43.

[0031] like Figure 2 As shown, it also includes: one side of the tube shell 41 provided with low boiling point liquid 42 is the evaporation end. By providing the low boiling point liquid 42, such as water, ammonia, acetone or special fluorinated liquid, it has the advantages of latent heat of evaporation, chemical stability, non-toxicity and environmental protection.

[0032] like Figure 2 As shown, the other side of the tube shell 41 is a condensation end. By setting the tube shell 41, stainless steel or copper alloy is used, which has good high temperature resistance and can withstand high temperature without deformation or damage, so that the low boiling point liquid 42 will not leak.

[0033] The technical solution provided by the utility model is to connect the junction box 1 with the controller, and to install the temperature sensor through the installation part 3; the evaporation end of the tube shell 41 is close to the high temperature source, so that the low boiling point liquid 42 is vaporized, and the vapor carries a large amount of heat and quickly flows to the condensation end of the tube shell 41. The vapor condenses into liquid when it encounters cold at the condensation end, and releases the heat absorbed during evaporation. This part of heat is transferred to the temperature sensing element 8 through the heat conductive block 5 and converted into data for transmission. At the same time, due to the capillary action of the liquid wick 43, the condensed liquid flows back to the evaporation end, ready to evaporate again, and the cycle repeats; when detecting the explosion temperature, the protective tube 2 and the armor layer 6 can effectively resist the impact of the explosion; in a high temperature and high pressure environment, when the sensor generates external pressure or internal pressure, the first deformation plate 61 drives the second deformation plate 62 to squeeze outward through the supporting connecting rib 63. When the second deformation plate 62 cannot be deformed, the supporting connecting rib 63 is deformed, thereby driving the first deformation plate 61 to deform, absorb its pressure, and protect the sensitive components inside the sensor from damage.

[0034] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An explosion-proof armored temperature sensor, characterized in that: include: Junction box (1); A protective tube (2) arranged on the junction box (1); An armor layer (6) is arranged in the protection tube (2), and the armor layer (6) comprises: A plurality of first deformation plates (61) arranged in the armor layer (6) and used for absorbing the internal pressure of the sensor; A plurality of second deformation plates (62) arranged in the armor layer (6) and used to buffer the pressure exerted on the sensor; The first deformable plate (61) is located on one side of the inner wall of the armor layer (6), and the second deformable plate (62) is located on the other side of the inner wall of the armor layer (6); A supporting connecting rib (63) is arranged between the first deformable plate (61) and the second deformable plate (62) and is used for transmitting force between the first deformable plate (61) and the second deformable plate (62); An insulating tube (7) arranged inside the armor layer (6); A temperature sensing element (8) is arranged in the insulating tube (7).

2. The explosion-proof armored temperature sensor according to claim 1, characterized in that: Also includes: The first deformable plate (61) and the second deformable plate (62) are in a curved shape.

3. The explosion-proof armored temperature sensor according to claim 1, characterized in that: Also includes: The first deformation plate (61) and the second deformation plate (62) are spaced the same distance apart.

4. The explosion-proof armored temperature sensor according to claim 1, characterized in that: Also includes: A mounting portion (3) arranged at the bottom of the protection tube (2); A probe tube (4) is arranged on the mounting portion (3); A heat conducting block (5) is arranged in the mounting portion (3), and one side of the heat conducting block (5) passes through the mounting portion (3) and is in contact with the temperature sensing element (8).

5. The explosion-proof armored temperature sensor according to claim 4, characterized in that: The probe (4) comprises: A tube shell (41) is arranged on the mounting portion (3), with one side of the tube shell (41) extending into the mounting portion (3), and the top of the tube shell (41) in contact with the heat conducting block (5); A liquid wick (43) disposed in the tube shell (41); The low boiling point liquid (42) is arranged in the liquid absorbent core (43).

6. The explosion-proof armored temperature sensor according to claim 5, characterized in that: Also includes: The side of the tube shell (41) where the low-boiling-point liquid (42) is provided is an evaporation end.

7. The explosion-proof armored temperature sensor according to claim 6, characterized in that: Also includes: The other side of the tube shell (41) is a condensation end.

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