A temperature measuring device

Abstract

The application belongs to the technical field of underwater underground temperature measuring equipment, and discloses a temperature measuring device, which comprises a junction box, a temperature sensing element, a metal sheath pipe, a sleeve pipe, a sleeve pipe flange and a sleeve pipe sealing element; the temperature sensing element is connected with the junction box; the temperature sensing element is arranged in the metal sheath pipe, and the sensing end of the temperature sensing element is arranged at the first end of the metal sheath pipe; the first end of the metal sheath pipe is arranged in the sleeve pipe; the second end of the metal sheath pipe is connected with the junction box; and the sleeve pipe sealing element is sealingly arranged at the pipe opening of the sleeve pipe; and the sleeve pipe flange is arranged on the outer circumferential surface of the sleeve pipe. The temperature measuring device can avoid water inflow when a thermocouple or a thermal resistance is used underwater and underground, and has good waterproofness.

Description

Technical Field

[0001] This invention relates to the field of underwater and underground temperature measurement equipment, and in particular to a temperature measurement device. Background Technology

[0002] Thermocouples and resistance temperature detectors (RTDs) are widely used for temperature measurement in important industries and municipal enterprises such as petrochemicals, power, and water supply and drainage. They are commonly used to measure the temperature of gases, steam, or liquids in various equipment and pipelines, as well as the surface temperature of solids. However, because the junction box itself, its inlet, and outlet are not very watertight, they are prone to water ingress. This can lead to thermocouple failure when measuring the temperature of underground equipment or pipelines due to water entering the junction box. Summary of the Invention

[0003] This invention provides a temperature measuring device that solves the technical problem of poor waterproofing in existing underwater and underground temperature measuring thermocouples and resistance temperature measuring devices.

[0004] To solve the above-mentioned technical problems, the present invention provides a temperature measuring device, comprising: a junction box, a temperature sensing element, a metal armored sleeve, a sleeve, a sleeve flange, and a sleeve seal;

[0005] The temperature sensing element is connected to the junction box. The temperature sensing element is disposed inside the metal sheath, and the sensing end of the temperature sensing element is disposed at the first end of the metal sheath. The first end of the metal sheath is disposed inside the sheath, and the second end of the metal sheath is connected to the junction box. The sheath seal is disposed at the opening of the sheath.

[0006] The sleeve flange is disposed on the outer circumferential surface of the sleeve.

[0007] Furthermore, the sleeve seal includes: a sealing stud, a sealing cone cap, and a clamping nut;

[0008] An axial hole is provided on the sealing stud, and the metal armor sleeve is disposed in the axial hole;

[0009] The sealing cone cap has a through hole, and the metal armor sleeve is embedded in the through hole;

[0010] The sealing cone cap rests on the first end of the sealing stud and is disposed inside the sealing nut. The sealing nut presses the sealing cone cap tightly onto the first end of the sealing stud, and the second end of the sealing stud is screwed into the opening of the sleeve.

[0011] Furthermore, the sealing cone is an elastic metal seal or an elastic rubber seal.

[0012] Furthermore, the clamping nut is provided with a reduced-diameter inclined surface, and the conical surface of the sealing cone abuts against the reduced-diameter inclined surface.

[0013] Furthermore, the sleeve has a countersunk plate at its opening, a sealing washer is provided on the countersunk plate, and the second end of the sealing stud abuts against the sealing washer.

[0014] Furthermore, the temperature measuring device also includes: a centering base;

[0015] The centering seat is provided with a centering limiting hole, and the metal armor sleeve is embedded in the centering limiting hole;

[0016] The centering seat is pressed between the sealing washer and the second end of the sealing stud.

[0017] Furthermore, the centering seat includes: a centering pad and a limiting cylinder;

[0018] The centering and limiting hole is formed on the centering gasket, the limiting cylinder is fixed on the centering gasket, and the limiting cylinder is coaxially arranged with the centering and limiting hole; the metal armor sleeve is embedded in the centering and limiting hole and the limiting cylinder.

[0019] Furthermore, the outer surface of the middle part of the sealing stud is formed into a clamping surface.

[0020] Furthermore, the metal armored sleeve is a flexible metal armored sleeve.

[0021] Furthermore, the sleeve flange is welded to the outer circumferential surface of the sleeve.

[0022] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0023] The temperature measuring device provided in this application embodiment establishes a temperature measuring functional structure based on a junction box and thermocouple and resistance temperature detector (RTD) sensing elements. Furthermore, to ensure normal functioning under underwater or underground pipeline temperature measuring conditions, a sleeve is provided to house the sensing element, and the sleeve is sealed with a sleeve sealant to enclose the sensing element, meeting the sealing and waterproofing requirements for underwater and underground use. A sleeve flange is also provided on the sleeve for connecting to flanges on the pipeline for on-site installation. Additionally, a metal armored sleeve is fitted over the sensing element to isolate it from the external water environment. This allows the junction box to be placed on the water surface or ground, avoiding the risk of water ingress and achieving stable and reliable underwater and underground temperature measuring applications. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is an assembly diagram of the temperature measuring device provided in an embodiment of the present invention;

[0026] Figure 2 for Figure 1 A connection diagram of the junction box for the temperature measuring device in the diagram;

[0027] Figure 3 for Figure 1 A schematic diagram of the sleeve seal of the temperature measuring device in the diagram;

[0028] Figure 4 for Figure 1 Front view of the centering base of the temperature measuring device in the middle;

[0029] Figure 5 for Figure 1 A top view of the centering base of the temperature measuring device. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0031] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0032] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0033] This application is described below with reference to the accompanying drawings and specific embodiments.

[0034] This application provides a temperature measuring device that solves the technical problem of poor waterproofing of existing underwater and underground temperature measuring thermocouples and resistance temperature measuring devices, meets the sealing and waterproofing requirements for underwater and underground pipeline temperature measuring conditions, and ensures the reliability of the temperature measuring function.

[0035] To better understand the above technical solutions, the following will describe the above technical solutions in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0036] See Figure 1 and Figure 2 This embodiment provides a temperature measuring device, specifically based on a thermocouple and resistance temperature detector (RTD) sensor structure, namely a typical temperature measurement and transmission structure consisting of a junction box 100 and a connected temperature sensing element 500. The temperature sensing element 500 can adopt a thermocouple-based temperature sensing structure or an RTD-based temperature sensing structure.

[0037] To meet the temperature measurement requirements under underwater or underground pipeline conditions and prevent water ingress from affecting the function of the temperature measurement structure, this embodiment sets the temperature sensing element 500 in a structure that can be arranged underwater or underground. A metal sheath 110 is used to seal the temperature sensing element 500, and the second end of the metal sheath 110 is connected to the junction box 100. This allows the junction box 100 to be placed on the ground or water surface, fundamentally avoiding the water ingress defects of existing thermocouple or resistance temperature detector junction boxes, thus ensuring the overall waterproofness and reliability of the wiring. Furthermore, by setting a sleeve 300 and a sleeve seal 200 to seal the pipe opening, a sealed space is formed. The sensing end of the temperature sensing element 500 is located at the first end of the metal sheath 110, thus placing the sensing end of the temperature sensing element 500 within the sealed space, isolating it from the external water environment, ensuring the normal function of the temperature sensing structure. Therefore, both the wiring end and the sensing end are sealed and isolated from the water environment, ensuring the reliability of the temperature measurement structure.

[0038] Meanwhile, in order to facilitate fixing to underwater or underground pipelines, a sleeve flange 340 can be provided on the outer circumference of the sleeve 300. It can usually be fixed by welding to fit and fix to the flange sleeve 400 installed on the pipeline, and locked by fastening bolts 410 to achieve on-site assembly.

[0039] Generally, in order to adapt to flexible installation in underwater and underground working conditions, the metal armored sleeve 110 can be set as a flexible metal armored sleeve, so as to adapt to the underwater and underground installation environment and achieve flexible adjustment of the arrangement position and attitude through flexible deformation.

[0040] See Figure 1 and Figure 3 In order to accommodate the shape and arrangement of the temperature sensing element 500 and the metal sheath 110, the sheath seal 200 includes a sealing stud 210.

[0041] Specifically, the sealing stud 210 is used to seal the opening of the sleeve 300. In this embodiment, the opening is sealed by embedding, and the second end of the sealing stud 210 is screwed and fixed by opening threads on the inner circumferential surface of the opening.

[0042] To facilitate the passage of the metal sheath 110, an axial hole can be provided on the sealing stud 210, and the metal sheath 110 can be embedded in the axial hole for easy exit. To facilitate the sealing of the axial hole and the metal sheath 110, a sealing cone cap 230 with a through hole can be provided on the first end of the sealing stud 210, so that the metal sheath 110 is embedded in the through hole to achieve a contact seal. To ensure underwater sealing, a clamping nut 220 can be screwed to the first end of the sealing stud 210 to constrain the sealing cone cap 230, and the sealing cone cap 230 is gradually pressed onto the first end face of the sealing stud 210 through the tightening process. It is worth noting that during the deformation of the sealing cone cap 230, the gap can be greatly reduced, achieving a surface-to-surface contact seal between the sealing cone cap 230, the metal sheath 110, and the first end face of the sealing stud 210. This strictly achieves the sealing and isolation of the temperature sensing element 500, ensuring the reliability of the temperature sensing function.

[0043] To improve the performance of deformation sealing, the sealing cone cap 230 may be made of elastic metal or rubber material.

[0044] To enhance the compression deformation effect, a reduced-diameter inclined surface is provided inside the clamping nut 220. The conical surface of the sealing cone cap 230 abuts against the reduced-diameter inclined surface. As the clamping nut 220 is tightened, the reduced-diameter inclined surface can efficiently compress the sealing cone cap 230 inward. This seals the through hole of the clamping nut 220 and increases the elastic contact surface between the sealing cone cap 230 and the metal armor sleeve 110, thereby improving the sealing effect.

[0045] To facilitate the rotation of the sealing stud 210, a regular multi-faceted clamping surface can be formed on the outer surface of the sealing stud 210 to facilitate clamping of tools such as wrenches.

[0046] To further improve the sealing effect, the sleeve 300 is provided with a countersunk plate 310, and a sealing washer 320 is provided on the countersunk plate 310. The second end of the sealing stud 210 abuts against the sealing washer 320, so that the sealing washer 320 can be pressed by rotating the sealing stud 210, sealing the gap between the second end face of the sealing stud 210 and the countersunk plate 310, and strengthening the contact sealing effect.

[0047] To ensure the temperature sensing reliability of the temperature sensing element 500 and prevent it from swinging excessively in the sleeve 300, scraping or colliding with the sleeve 300, thus affecting the temperature sensing reliability, a centering seat 330 can be provided inside the sleeve 300 to constrain the metal armor sleeve 110, so that it can be as close as possible to the center of the sleeve 300 and to constrain the length of its swingable portion.

[0048] Specifically, a centering limiting hole can be provided on the centering seat 330, and the metal armor sleeve 110 is embedded in the centering limiting hole; thereby forming a second limiting structure below the sealing cone cap 230, thereby shortening the swing amplitude, reducing the risk and degree of damage from scraping and colliding with the inner wall of the sleeve 300, and ensuring the reliability of the temperature sensing function.

[0049] To facilitate disassembly and assembly and ensure stable placement, the centering seat 330 can be pressed between the sealing washer 320 and the second end of the sealing stud 210, and the sealing stud 210 can be used to fix the device.

[0050] Generally, the centering and limiting hole can be arranged coaxially with the sleeve 300 to ensure that the distance from the metal armor sleeve 110 to the pipe wall in all directions is relatively equal, thereby reducing the risk of collision and scratch.

[0051] See Figure 4 and Figure 5 Specifically, the centering seat 330 may include a centering pad 331.

[0052] The centering gasket 331 serves as a fixed base, pressing between the sealing washer 320 and the second end of the sealing stud 210. This reduces the impact of the sealing stud 210's rotation on the sealing performance and lifespan of the sealing washer 320. More importantly, it also provides a stable limiting platform, allowing the centering limiting hole to be opened on the centering gasket 331 for stable positioning.

[0053] To limit the swing amplitude, a limiting cylinder 332 can be coaxially provided on the centering gasket 331 and the centering limiting hole. The limiting cylinder 332 can be directly welded to the centering gasket 331. Thus, when the metal armor sleeve 110 is embedded in the limiting cylinder, the swing amplitude can be further reduced by the length of the limiting cylinder 332.

[0054] Of course, the centering gasket and the limiting cylinder can also be fixed by integral forging or stamping in one piece.

[0055] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0056] The temperature measuring device provided in this application embodiment establishes a temperature measuring functional structure based on a junction box and thermocouple and resistance temperature detector (RTD) sensing elements. Furthermore, to ensure normal functioning under underwater or underground pipeline temperature measuring conditions, a sleeve is provided to house the sensing element, and the sleeve is sealed with a sleeve sealant to enclose the sensing element, meeting the sealing and waterproofing requirements for underwater and underground use. A sleeve flange is also provided on the sleeve for connecting to flanges on the pipeline for on-site installation. Additionally, a metal armored sleeve is fitted over the sensing element to isolate it from the external water environment. This allows the junction box to be placed on the water surface or ground, avoiding the risk of water ingress and achieving stable and reliable underwater and underground temperature measuring applications.

[0057] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0058] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0059] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0060] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0061] In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0062] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0063] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A temperature measuring device, characterized in that, include: Junction box, temperature sensing element, metal armored sleeve, sleeve, sleeve flange and sleeve seal; The temperature sensing element is connected to the junction box. The temperature sensing element is disposed inside the metal sheath, and the sensing end of the temperature sensing element is disposed at the first end of the metal sheath. The first end of the metal sheath is disposed inside the sheath, and the second end of the metal sheath is connected to the junction box. The sheath seal is disposed at the opening of the sheath. The sleeve flange is disposed on the outer circumferential surface of the sleeve; The sleeve seal includes: a sealing stud, a sealing cone cap, and a clamping nut; An axial hole is provided on the sealing stud, and the metal armor sleeve is disposed in the axial hole; The sealing cone cap has a through hole, and the metal armor sleeve is embedded in the through hole; The sealing cone cap rests on the first end of the sealing stud and is disposed inside the sealing nut. The sealing nut presses the sealing cone cap tightly onto the first end of the sealing stud, and the second end of the sealing stud is screwed into the opening of the sleeve. The sleeve has a countersunk plate at its opening, and a sealing washer is provided on the countersunk plate. The second end of the sealing stud abuts against the sealing washer. The temperature measuring device also includes a centering base; The centering seat is provided with a centering limiting hole, and the metal armor sleeve is embedded in the centering limiting hole; The centering seat is pressed between the sealing washer and the second end of the sealing stud.

2. The temperature measuring device as described in claim 1, characterized in that, The sealing cone is an elastic metal seal or an elastic rubber seal.

3. The temperature measuring device as described in claim 2, characterized in that, The clamping nut has a reduced diameter inclined surface inside, and the conical surface of the sealing cone cap abuts against the reduced diameter inclined surface.

4. The temperature measuring device as described in claim 1, characterized in that, The centering seat includes: a centering washer and a limiting sleeve; The centering and limiting hole is formed on the centering gasket, the limiting cylinder is fixed on the centering gasket, and the limiting cylinder is coaxially arranged with the centering and limiting hole; the metal armor sleeve is embedded in the centering and limiting hole and the limiting cylinder.

5. The temperature measuring device as described in claim 2, characterized in that, The outer surface of the middle part of the sealing stud is formed into a clamping surface.

6. The temperature measuring device as described in claim 1, characterized in that, The metal armored sleeve is a flexible metal armored sleeve.

7. The temperature measuring device as described in claim 1, characterized in that, The sleeve flange is welded to the outer circumferential surface of the sleeve.

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