High-precision explosion-proof multi-point armored thermocouple

Abstract

A high-precision explosion-proof multi-point armored thermocouple comprises, from inside to outside, a thermocouple wire, an inner sleeve, insulating material and an outer sleeve, a mounting shell fixedly installed on the outer sleeve, an explosion-proof shell mounted on the mounting shell, a bracket one and a bracket two fixedly installed in the mounting shell, a rotating frame rotatably installed on the bracket one, a roller rotatably installed on the bracket two, a mounting cylinder coaxially sleeved on the outer sleeve, a sliding cylinder and a threaded cylinder coaxially and slidably installed on the mounting cylinder and fixedly connected with each other, a limiting block fixedly installed on the mounting cylinder and intermittently clamping the threaded cylinder, a mounting connecting plate rotatably installed on the mounting cylinder and elastically connected with the threaded cylinder, and a buckle mounted on the sliding cylinder and intermittently clamping the mounting connecting plate; the thermocouple wire is coiled in the mounting shell; the measuring end is freely movable, two installation modes of threaded installation and fixed plate installation are provided, and the installation position of a common armored thermocouple can be assisted in positioning.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of temperature sensors, in particular to a high-precision explosion-proof multi-point armored thermocouple. BACKGROUND

[0002] In industrial production and many fields, temperature measurement is a very key link, which plays a decisive role in the control of production process, the guarantee of product quality and the safe operation of equipment. As a commonly used temperature measurement sensor, armored thermocouples are widely used in various production processes to measure the temperature of various fluids, steam, gas media and solid surfaces.

[0003] In terms of installation method, traditional armored thermocouples usually only adopt a single fixed form, such as fixed threaded installation or fixed plate installation, which lacks flexibility. These two single installation methods are difficult to adapt to the diversified installation needs of industrial sites.

[0004] In the actual use process of traditional armored thermocouples, the measurement end position often needs to bend the thermocouple wire to move, which has many limitations. Due to the fixed measurement end, it needs to be arranged at a specific position during on-site installation and use to meet the measurement requirements. However, in some narrow and complex industrial sites, the measurement end may be difficult to find a suitable installation position, and it needs to be bent multiple times and the installation position needs to be selected multiple times, and the final installation position is tried out through repeated installation and disassembly. This not only increases the installation difficulty, but also affects the measurement efficiency due to repeated installation, and also increases the work risk of the test personnel.

[0005] In addition, in some scenarios where temperature measurement at different positions is required, if multiple traditional armored thermocouples are used, not only the cost is high, but also the installation and maintenance work is tedious. If the measurement end of the armored thermocouple can be moved, the same thermocouple can be used flexibly at different measurement points by moving the position of the measurement end, which will greatly improve the measurement efficiency and reduce the cost.

[0006] In summary, it is of great significance to develop an armored thermocouple with a movable measurement end and two selectable installation methods of threaded installation and fixed plate installation. Its diversified installation methods can adapt to different specifications of equipment and complex environments, and the free movement of the measurement end gives flexibility to the use. This makes the thermocouple not only solve the inherent problems of traditional thermocouples, but also be used to determine the installation position of ordinary armored thermocouples. In practical applications, by moving the measurement end and selecting the appropriate installation method, temperature measurement tests can be performed at different positions, so as to find the most suitable installation position for ordinary armored thermocouples, avoid measurement errors and equipment damage caused by improper installation, and provide more efficient, accurate and reliable technical support for temperature measurement in industrial production and scientific research. SUMMARY

[0007] In view of the above problems, the application provides a high-precision explosion-proof multi-point armored thermocouple, which uses the following technical scheme:

[0008] The high-precision explosion-proof multi-point armored thermocouple comprises, from inside to outside, a thermocouple wire, an inner sleeve, an insulating material and an outer sleeve, a mounting shell fixedly installed on the outer sleeve, an explosion-proof shell installed on the mounting shell, a support one and a support two fixedly installed in the mounting shell, a rotating frame rotatably installed on the support one, and a roller rotatably installed on the support two and used for supporting the thermocouple wire and driving the thermocouple wire to move.

[0009] The mounting shell is provided with an annular placement groove for the thermocouple wire; the rotating frame is fixedly provided with a clamping block; and the mounting shell is fixedly provided with a plurality of turning blocks; the thermocouple wire passes through the turning blocks and the clamping block and is wound in the annular placement groove in the mounting shell.

[0010] Further, the application further comprises a motor one fixedly installed on the support one and an input gear coaxially fixedly installed on an output end of the motor one; and the rotating frame is fixedly provided with an output inner gear ring engaged with the input gear.

[0011] Further, the application further comprises a motor two fixedly installed on the support two and used for driving the roller to rotate.

[0012] Further, the application further comprises a mounting cylinder coaxially sleeved on the outer sleeve, a sliding cylinder and a threaded cylinder coaxially and slidably installed on the mounting cylinder and fixedly connected with each other, a limiting block fixedly installed on the mounting cylinder and used for intermittently clamping the threaded cylinder, a mounting connecting plate rotatably installed on the mounting cylinder and elastically connected with the threaded cylinder, and a buckle installed on the sliding cylinder and used for intermittently clamping the mounting connecting plate.

[0013] Further, the application further comprises an elastic connecting rod arranged between the mounting connecting plate and the threaded cylinder; and the elastic connecting rod is rotatably installed at two ends of the mounting connecting plate and the threaded cylinder, respectively.

[0014] Further, the mounting connecting plate is provided with a plurality of mounting holes.

[0015] Due to the above technical scheme, compared with the prior art, the application has the following advantages:

[0016] 1. The measurement end is movable, so that the same armored thermocouple can be used flexibly at different measurement points. In a complex industrial site, the measurement end can be adjusted to a suitable position to ensure stable operation of the measurement system, and the demand for temperature measurement at different positions can be met without using multiple thermocouples, thereby effectively reducing the cost and improving the measurement efficiency.

[0017] 2. The installation flexibility is significantly improved: the application provides both threaded installation and fixed plate installation, which can adapt to different specifications of equipment and complex installation environment compared with the traditional single installation form.

[0018] 3. Precise positioning of general armored thermocouple installation position: with the diversified installation method and the movable characteristics of the measuring end, the application can measure the temperature in different positions in actual application. By moving the measuring end and selecting the appropriate installation method to obtain measurement data, the most suitable position for installing the general armored thermocouple can be accurately determined, effectively avoiding measurement errors and equipment loss caused by improper installation position, providing a scientific basis for the subsequent installation of the general armored thermocouple, and ensuring the accuracy of temperature measurement and the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overall structure schematic diagram when the installation connecting plate is used for installation of the application.

[0020] Figure 2 It is the assembly structure schematic diagram of the installation cylinder, sliding cylinder, threaded cylinder, installation connecting plate and elastic connecting rod when the threaded cylinder is used for installation of the application.

[0021] Figure 3 It is the overall structure schematic diagram when the threaded cylinder is used for installation of the application.

[0022] Figure 4 It is the assembly structure schematic diagram of the installation cylinder, sliding cylinder, threaded cylinder, installation connecting plate and elastic connecting rod when the threaded cylinder is used for installation of the application.

[0023] Figure 5 It is the assembly structure schematic diagram of the thermocouple wire, inner sleeve, insulating material and outer sleeve of the application.

[0024] Figure 6 It is the assembly structure side view of the thermocouple wire, installation shell, support one, rotating frame and support two of the application.

[0025] Figure 7 It is the assembly structure side view of the thermocouple wire, installation shell, support one, rotating frame and support two of the application.

[0026] Figure 8 It is the assembly structure schematic diagram of the thermocouple wire, support one, rotating frame and support two of the application.

[0027] Figure 9 It is the assembly structure schematic diagram of the thermocouple wire, rotating frame, motor one and input gear of the application.

[0028] Figure 10 It is the assembly structure schematic diagram of the thermocouple wire, support two, roller and motor two of the application.

[0029] Reference Signs:

[0030] 1 - thermocouple wire; 2 - inner sleeve; 3 - insulating material; 4 - outer sleeve; 5 - mounting shell; 501 - turning block; 6 - support one; 7 - rotating frame; 701 - clamping block; 702 - output inner gear ring; 8 - motor one; 9 - input gear; 10 - support two; 11 - roller; 12 - motor two; 13 - mounting cylinder; 14 - sliding cylinder; 15 - threaded cylinder; 16 - buckle; 17 - limiting block; 18 - mounting connecting plate; 19 - elastic connecting rod; 20 - explosion-proof shell. DETAILED DESCRIPTION

[0031] The technical solutions of the present application will be further described below by examples in conjunction with the drawings. In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, therefore the present application is not limited to the specific examples disclosed below.

[0032] In the description of the present application, it should be noted that the terms "upper", "lower", "in", "out", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product is used, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0033] Embodiment:

[0034] As shown in Figure 1 , Figure 3 and Figure 5 , the embodiment provides a high-precision explosion-proof multi-point armored thermocouple, which comprises a thermocouple wire 1, an inner sleeve 2, an insulating material 3, an outer sleeve 4, a mounting shell 5 and an explosion-proof shell 20; the thermocouple wire 1, the inner sleeve 2, the insulating material 3 and the outer sleeve 4 are arranged in order from inside to outside, the thermocouple wire 1 is wrapped with an outer skin, the outer skin is slidingly installed in the inner sleeve 2, and the inner sleeve 2 and the outer sleeve 4 are filled with the insulating material 3; the mounting shell 5 is fixedly installed at the top end of the outer sleeve 4, and the explosion-proof shell 20 is threadedly installed on the mounting shell 5.

[0035] As shown in Figures 6-10As shown, the thermocouple of the embodiment further comprises a support one 6, a rotating frame 7, a motor one 8, an input gear 9, a support two 10, a roller 11 and a motor two 12; the support one 6 and the support two 10 are fixedly installed in the installation shell 5; the rotating frame 7 is rotatably installed on the support one 6; the motor one 8 is fixedly installed on the support one 6, the input gear 9 is coaxially fixedly installed on the output end of the motor one 8, and the rotating frame 7 is provided with an output inner gear ring 702, which is engaged with the input gear 9;

[0036] The reference end of the thermocouple wire 1 enters the installation shell 5 and is wound on the installation shell 5, and the installation shell 5 is provided with an annular placement groove for the thermocouple wire 1; specifically, the rotating frame 7 is fixedly provided with a clamping block 701, and the installation shell 5 is fixedly provided with a plurality of turning blocks 501, such as Figure 6 and Figure 8 As shown, the thermocouple wire 1 passes through the turning blocks 501 and the clamping blocks 701 and is wound in the annular placement groove in the installation shell 5, and the reference end extends out of the annular placement groove;

[0037] The roller 11 is provided with a plurality of rollers, which are rotatably installed on the support two 10 and are used for supporting and moving the thermocouple wire 1, and the motor two 12 is used for rotating one of the rollers 11; in one specific embodiment of the embodiment, the roller 11 is provided with three rollers, two of which are separately arranged on the two sides of the thermocouple wire 1 to limit the thermocouple wire 1, and the third roller is arranged above to make the thermocouple wire 1 turn; the motor two 12 is fixedly installed on the support two 10, and the output end is coaxially fixedly connected with one of the rollers 11.

[0038] As shown, Figures 1-4 The thermocouple of the embodiment further comprises an installation cylinder 13, a sliding cylinder 14, a threaded cylinder 15, a buckle 16, a limiting block 17, an installation connecting plate 18 and an elastic connecting rod 19; the installation cylinder 13 is coaxially sleeved on the outer sleeve 4; the sliding cylinder 14 and the threaded cylinder 15 are coaxially and slidably installed on the installation cylinder 13, and the sliding cylinder 14 and the threaded cylinder 15 are fixedly connected; the installation cylinder 13 is fixedly provided with a plurality of limiting blocks 17, which intermittently clamp the threaded cylinder 15;

[0039] The installation connecting plate 18 is provided with a plurality of installation connecting plates, which are circumferentially and uniformly arranged on the periphery of the installation cylinder 13; the bottom end of each installation connecting plate 18 is rotatably installed on the installation cylinder 13, and the top end is elastically connected with the threaded cylinder 15 through the elastic connecting rod 19; in one specific embodiment of the embodiment, the elastic connecting rod 19 is a compression spring rod, and each installation connecting plate 18 is provided with two elastic connecting rods 19, one end of each elastic connecting rod 19 is rotatably installed on the corresponding installation connecting plate 18, and the other end is fixedly installed on the same connecting rod, and the rod body of the connecting rod is rotatably installed on the threaded cylinder 15;

[0040] Each mounting plate 18 corresponds to a buckle 16 mounted on the sliding cylinder 14. The buckle 16 is made of spring material. When the mounting plate 18 is folded up, the buckle 16 can lock the top of the mounting plate 18.

[0041] Each mounting plate 18 has several mounting holes.

[0042] It should be noted that the mounting housing 5 in this embodiment may also be equipped with an integrated signal processing circuit. This integrated signal processing circuit has built-in signal amplification, linearization processing, and temperature compensation circuits (existing technology, which will not be described in detail here), which improves measurement accuracy and stability, and directly outputs digital signals to facilitate connection with intelligent systems.

[0043] The explosion-proof principle of the thermocouple in this embodiment is mainly based on the design concept of gap explosion-proof enclosure (also known as explosion-proof shell). Its core is to isolate potential explosion sources through physical structure and prevent internal explosion energy from being transferred to the external flammable and explosive environment. Specifically, it is manifested in the following aspects:

[0044] High-strength enclosure: The explosion-proof enclosure 20, the mounting enclosure 5 and other key components are made of high-strength materials (such as aluminum alloy and stainless steel), which have sufficient mechanical strength and pressure resistance to withstand the pressure generated by the internal explosion without breaking, thereby confining the explosion within the enclosure;

[0045] Sealing structure: All components that may generate sparks, arcs or dangerous temperatures are sealed inside the explosion-proof housing 20 and the mounting housing 5. The airtightness of the cavity is ensured by moisture-proof and high-temperature resistant materials such as rubber sealing rings to prevent external explosive gases from seeping in or internal energy from leaking out.

[0046] The working principle of this embodiment is as follows:

[0047] Adjusting the position of the measuring end of thermocouple wire 1: Start motor 8 and motor 12. Motor 12 drives roller 11 to rotate, which moves thermocouple wire 1. Motor 8 drives input gear 9 to rotate, which drives output internal gear ring 702 to rotate, thereby driving rotating frame 7 to rotate, which in turn extends or retracts the measuring end of thermocouple wire 1, thus achieving the effect of adjusting the position of the measuring end of thermocouple wire 1.

[0048] Different installation methods can be selected: When selecting threaded installation, slide the sliding cylinder 14 downwards (taking the direction shown in the attached diagram as an example), causing the threaded cylinder 15 to move downwards and retracting the mounting connecting plate 18. The elastic connecting rod 19 is compressed, and the top of the mounting connecting plate 18 is locked by the buckle 16. Finally, the threaded cylinder 15 is threadedly installed in the actual installation position. When selecting the installation method of mounting connecting plate 18, slide the sliding cylinder 14 upwards (taking the direction shown in the attached diagram as an example), causing the threaded cylinder 15 to move upwards. The buckle 16 moves upwards and disengages from the mounting connecting plate 18. The mounting connecting plate 18 rotates under the rebound action of the elastic connecting rod 19. When the threaded cylinder 15 is locked by the limiting block 17, the mounting connecting plate 18 rotates to a horizontal state. At this time, the mounting connecting plate 18 can be fixed in the actual installation position by bolts, screws, or pins.

[0049] Precisely locate the installation position of the ordinary armored thermocouple: According to the actual working conditions, select the installation method of threaded installation or installation of the connecting plate 18, and install the armored thermocouple of this embodiment; then start motor 8 and motor 12, and move the measuring end of the thermocouple wire 1 to perform temperature measurement tests at different positions, so as to find the most suitable installation position of the ordinary armored thermocouple and avoid measurement errors and equipment damage caused by improper installation position.

Claims

1. A high-precision explosion-proof multi-point armored thermocouple, characterized in that, The device includes, from the inside out, a thermocouple wire, an inner sheath, insulating material, and an outer sheath; a mounting shell fixedly mounted on the outer sheath; an explosion-proof shell mounted on the mounting shell; two supports fixedly mounted inside the mounting shell; a rotating frame rotatably mounted on the first support; and rollers rotatably mounted on the second support for supporting and moving the thermocouple wire. The mounting shell has an annular groove for the thermocouple wire. A locking block is fixedly mounted on the rotating frame, and several steering blocks are fixedly mounted inside the mounting shell. The thermocouple wire passes around the steering blocks and locking blocks and coils within the annular groove inside the mounting shell. It also includes a motor fixedly mounted on a bracket, and an input gear coaxially fixedly mounted on the output end of the motor; an output internal gear ring meshing with the input gear is fixedly mounted on the rotating frame; It also includes a mounting cylinder coaxially mounted on the outer sleeve, a sliding cylinder and a threaded cylinder coaxially slidably mounted on the mounting cylinder and fixedly connected to each other, a limiting block fixedly mounted on the mounting cylinder and intermittently locking the threaded cylinder, a mounting connecting plate rotatably mounted on the mounting cylinder and elastically connected to the threaded cylinder, and a buckle mounted on the sliding cylinder and intermittently locking the mounting connecting plate. It also includes an elastic connecting rod disposed between the mounting connecting plate and the threaded cylinder; the two ends of the elastic connecting rod are respectively rotatably mounted on the mounting connecting plate and the threaded cylinder.

2. The high-precision explosion-proof multi-point armored thermocouple according to claim 1, characterized in that, It also includes a motor two that is fixedly mounted on bracket two and used to drive the rollers to rotate.

3. The high-precision explosion-proof multi-point armored thermocouple according to claim 1, characterized in that, The mounting connection plate is provided with several mounting holes.

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