Thermometer temperature measuring structure suitable for large-diameter reaction container

Abstract

The utility model relates to a thermometer temperature measuring structure suitable for a large-diameter reaction container, which comprises a first thermometer temperature measuring pipe orifice, a second thermometer temperature measuring pipe orifice and a third thermometer temperature measuring pipe orifice, the first thermometer temperature measuring pipe orifice, the second thermometer temperature measuring pipe orifice and the third thermometer temperature measuring pipe orifice are arranged in the reaction container in a crossed manner, and an included angle of 60 degrees is formed between every two adjacent thermometer temperature measuring pipe orifices; the first thermometer temperature measuring pipe orifice, the second thermometer temperature measuring pipe orifice and the third thermometer temperature measuring pipe orifice are the same in structure and comprise a first connecting pipe, a second connecting pipe, a sealing plate and a flange, a plurality of rows of small holes are formed in the first connecting pipe in the axis direction of the first connecting pipe, an inner-layer silk screen is wound on the outer side of the first connecting pipe, and an outer-layer silk screen is wound on the outer side of the inner-layer silk screen; the two ends of the inner-layer silk screen and the two ends of the outer-layer silk screen are all in spot welding with the first connecting pipe, the middle of the inner-layer silk screen and the middle of the outer-layer silk screen are bound and fixed through metal wires, and therefore the accuracy of medium temperature detection can be improved.

Description

[Technical Field]

[0001] This utility model relates to the field of reaction vessels, and in particular to a thermometer temperature measurement structure suitable for large-diameter reaction vessels. [Background Technology]

[0002] A reaction vessel is a container used to complete physical or chemical reactions of a medium. In industrial production, especially in the chemical, pharmaceutical, fertilizer, and refining industries, reaction vessels are widely used as pressure-bearing equipment due to process requirements.

[0003] Thermometers used in reaction vessels primarily serve the following functions: measuring the temperature of the working medium inside the vessel and controlling its temperature within a specified range to meet production process requirements. Please refer to existing technologies CN218600716U and CN212539443U. Due to the pressure inside the pressure vessel, existing thermometers generally employ a closed structure at the inlet, using a sleeve to isolate the thermometer from the medium. The medium is on the outside of the sleeve, and the thermometer is on the inside. This structure prevents the pressure inside the pressure vessel from impacting the thermometer. Specifically, the temperature of the working medium is transferred to the sleeve, and then the thermometer inside the sleeve detects the temperature of the sleeve to obtain the working medium temperature. The drawbacks of this thermometer measurement structure are: 1. There is actually a temperature difference between the sleeve temperature and the working medium temperature; using the sleeve temperature as the working medium temperature results in inaccurate measurements. 2. This thermometer measurement structure is only suitable for small-diameter reaction vessels and is not applicable to large-diameter reaction vessels.

[0004] Therefore, it is necessary to provide a thermometer temperature measurement structure suitable for large-diameter reaction vessels that solves the above-mentioned technical problems. [Utility Model Content]

[0005] To address the aforementioned problems, the purpose of this invention is to provide a thermometer temperature measurement structure suitable for large-diameter reaction vessels that can improve the accuracy of working medium temperature detection.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a thermometer temperature measuring structure suitable for large-diameter reaction vessels, comprising: a first thermometer temperature measuring tube, a second thermometer temperature measuring tube, and a third thermometer temperature measuring tube. The first, second, and third thermometer temperature measuring tubes are arranged in a crisscross pattern inside the reaction vessel, with a 60° angle between any two adjacent thermometer temperature measuring tubes. The vertical distance from the center of the reaction vessel to each of the first, second, and third thermometer temperature measuring tubes is greater than 500 mm. The thermometer's three measuring tubes have the same structure, including: a first connecting tube, a second connecting tube, a sealing plate, and a flange. The sealing plate is welded to the free end of the inner side of the first connecting tube. The second connecting tube passes through the reaction vessel cylinder and is welded to the reaction vessel cylinder. The part of the second connecting tube protruding from the reaction vessel cylinder is welded to the flange. The first connecting tube has several rows of small holes along its axial direction. An inner layer of wire mesh is wound around the outside of the first connecting tube, and an outer layer of wire mesh is wound around the outside of the inner layer of wire mesh. The inner and outer layers of wire mesh cover all the small holes. Both ends of the inner and outer layers of wire mesh are spot welded to the first connecting tube. The middle of the inner and outer layers of wire mesh is bound and fixed by metal wire.

[0007] Preferably, a thermometer measuring structure suitable for large-diameter reaction vessels in this utility model is further configured as follows: a first thermometer is provided in the first thermometer measuring tube, a second thermometer is provided in the second thermometer measuring tube, and a third thermometer is provided in the third thermometer measuring tube; the first thermometer, the second thermometer, and the third thermometer are all connected to a controller.

[0008] Preferably, the temperature measuring structure of the present invention suitable for large-diameter reaction vessels is further configured such that the controller is a PLC controller.

[0009] Preferably, the thermometer measuring structure of the present invention suitable for large-diameter reaction vessels is further configured such that the wall thickness of the second connecting pipe is thicker than the wall thickness of the first connecting pipe.

[0010] Preferably, the thermometer measuring structure of this utility model suitable for large-diameter reaction vessels is further configured such that the inner wire mesh, the outer wire mesh, and the metal wire are all made of stainless steel.

[0011] Preferably, the thermometer temperature measuring structure of the present invention suitable for large-diameter reaction vessels is further configured as follows: the first connecting pipe has three rows of small holes along its axial direction, including two rows of upper holes and one row of lower holes. The two rows of upper holes are respectively set at an angle of 30° with the central axis, and the row of lower holes is located on the central axis.

[0012] Preferably, the thermometer measuring structure of the present invention suitable for large-diameter reaction vessels is further configured such that the overlapping edge of the inner wire mesh and the overlapping edge of the outer wire mesh are staggered in the circumferential direction.

[0013] Preferably, the thermometer temperature measuring structure of the present invention suitable for large-diameter reaction vessels is further configured such that when the inner wire mesh and the outer wire mesh are fixed by binding with metal wire, the position of the binding of the metal wire is staggered from the position of the small hole on the first connecting pipe.

[0014] Compared with existing technologies, this invention has the following advantages: By arranging three thermometer probes in a crisscross pattern inside the reaction vessel, the three thermometers can measure the medium temperature at three different locations around the circumference of the reaction vessel. The controller then averages the values ​​measured by the three thermometers to improve the accuracy of medium temperature detection. Furthermore, by designing the first connecting pipe with a perforated mesh structure, this invention allows the working medium to pass through the first connecting pipe, enabling the thermometer to directly contact the working medium and measure its true temperature. This also prevents impurities in the working medium from entering the pipe and damaging the thermometer. Additionally, the perforations reduce the impact of the working medium pressure on the thermometer, thereby extending its service life. [Attached Image Description]

[0015] Figure 1 This is a schematic diagram of the arrangement of the three thermometer measuring tubes in the reaction vessel in this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the temperature measuring tube of the first thermometer in this utility model.

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the first connecting pipe in this utility model.

[0018] Figures 1 to 3 In the middle: 1. First thermometer measuring tube port, 10. First connecting tube, 100. Upper row of small holes, 101. Lower row of small holes, 11. Second connecting tube, 12. Sealing plate, 13. Flange, 14. Inner wire mesh, 140. Edge overlap of inner wire mesh, 15. Outer wire mesh, 150. Edge overlap of outer wire mesh, 16. Metal wire, 2. Second thermometer measuring tube port, 3. Third thermometer measuring tube port, 4. Reaction vessel.

Detailed Implementation Methods

[0019] The following detailed description of a thermometer temperature measuring structure suitable for large-diameter reaction vessels, based on specific embodiments, further illustrates this invention.

[0020] As shown Figures 1 to 3 in the figure, a thermometer temperature measurement structure suitable for a large-diameter reaction vessel includes: a first thermometer temperature measurement pipe opening 1, a second thermometer temperature measurement pipe opening 2, and a third thermometer temperature measurement pipe opening 3. The first thermometer temperature measurement pipe opening 1, the second thermometer temperature measurement pipe opening 2, and the third thermometer temperature measurement pipe opening 3 are arranged in a cross shape in the reaction vessel 4, and an included angle of 60° is provided between every two adjacent thermometer temperature measurement pipe openings. The vertical distances from the first thermometer temperature measurement pipe opening 1, the second thermometer temperature measurement pipe opening 2, and the third thermometer temperature measurement pipe opening 3 to the center of the reaction vessel 4 are all greater than 500 mm, so that the circumferential temperature can be measured evenly. A first thermometer (not shown) is provided in the first thermometer temperature measurement pipe opening 1, a second thermometer (not shown) is provided in the second thermometer temperature measurement pipe opening 2, and a third thermometer (not shown) is provided in the third thermometer temperature measurement pipe opening 3. The first thermometer, the second thermometer, and the third thermometer are all connected to a controller (not shown). The controller may include a microprocessor (MCU), and the MCU may include a central processing unit (Central Processing Unit, CPU), a read-only memory module (read-only memory, ROM), a random access memory module (random access memory, RAM), a timing module, a digital-to-analog conversion module (A / D converter), and a plurality of input / output ports. Of course, the controller may also adopt other forms of integrated circuits, such as: an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC) or a field programmable gate array (Field Programmable Gate Array, FPGA), etc. In this embodiment, the controller is a PLC controller. The working medium temperature values at three circumferential positions measured by the first thermometer, the second thermometer, and the third thermometer are transmitted to the controller, and the controller then takes their average value.

[0021] The first thermometer measuring tube 1 includes a first connecting tube 10, a second connecting tube 11, a sealing plate 12, and a flange 13. The wall thickness of the second connecting tube 11 is greater than that of the first connecting tube 10. This design helps to strengthen the opening at the reaction vessel 4. The sealing plate 12 is welded to the free end of the inner side of the first connecting tube 10. The second connecting tube 11 passes through the reaction vessel 4 and is welded to it. The part of the second connecting tube 11 that protrudes from the reaction vessel 4 is welded to the flange 13. The first connecting tube 10 has three rows of small holes along its axial direction. The three rows of small holes include two upper rows of small holes 100 and one lower row of small holes 101. The two upper rows of small holes 100 are set at a 30° angle to the central axis, and the one lower row of small holes 101 is located on the central axis. This arrangement of small holes can greatly reduce the impact of the working medium on the thermometer. An inner wire mesh 14 is wound around the outer side of the first connector 10, and an outer wire mesh 15 is wound around the outer side of the inner wire mesh 14. The inner and outer wire meshes 14 and 15 cover all the small holes. Both ends of the inner and outer wire meshes 14 and 15 are spot-welded to the first connector 10. The middle of the inner and outer wire meshes 14 and 15 is bound and fixed by a metal wire 16. When the inner and outer wire meshes 14 and 15 are bound and fixed by the metal wire 16, the position of the metal wire 16 is staggered from the position of the small holes on the first connector, so as to avoid blocking the small holes. In this embodiment, the inner wire mesh 14, outer wire mesh 15 and metal wire 16 are all made of stainless steel, thus having good corrosion resistance. The overlapping edges 140 of the inner wire mesh 14 and the overlapping edges 150 of the outer wire mesh 15 are staggered in the circumferential direction. The advantage of this arrangement is that even if the metal wire 16 used for binding becomes loose after long-term use, the wire mesh can still cover the small holes. The structures of the second thermometer measuring tube 2 and the third thermometer measuring tube 3 are the same as those of the first thermometer measuring tube 1, so they will not be described again here.

[0022] In summary, this invention improves the accuracy of medium temperature detection by arranging three thermometer probes in a crisscross pattern inside the reaction vessel. These three thermometers measure the medium temperature at three different locations around the circumference of the reaction vessel. The controller then averages the values ​​from the three thermometers. Furthermore, the invention's first connecting pipe is designed with a perforated mesh structure. This allows the working medium to pass through the first connecting pipe, enabling the thermometers to directly contact the working medium and measure its true temperature. It also prevents impurities in the working medium from entering the pipe and damaging the thermometers. Additionally, the perforations reduce the impact of the working medium pressure on the thermometers, thus extending their lifespan.

[0023] The above embodiments are merely illustrative of the principles and effects of this utility model, as well as some of its applications, and are not intended to limit this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A thermometer temperature measuring structure suitable for large-diameter reaction vessels, characterized in that, The utility model relates to a kind of temperature measuring pipe mouth of temperature measurement of first thermometer, second thermometer and third thermometer, and the first temperature measuring pipe mouth, second temperature measuring pipe mouth and third temperature measuring pipe mouth are arranged in reaction vessel in cross shape, and every two adjacent temperature measuring pipe mouth is arranged with 60 ° angle, the vertical distance of the first temperature measuring pipe mouth, the second temperature measuring pipe mouth and the third temperature measuring pipe mouth from reaction vessel center is greater than 500 mm, the first temperature measuring pipe mouth, second temperature measuring pipe mouth and third temperature measuring pipe mouth are identical in structure, including: first pipe, second pipe, sealing plate and flange, the sealing plate is welded to the inner side free end of first pipe, the second pipe is arranged in reaction vessel cylinder and is welded with reaction vessel cylinder, the part of the second pipe that protrudes from reaction vessel cylinder is welded with flange, the first pipe is provided with a plurality of small holes along its axial direction, the outer side of the first pipe is wound with inner layer wire netting, the outer side of the inner layer wire netting is wound with outer layer wire netting, the inner layer wire netting and outer layer wire netting cover all small holes, the both ends of the inner layer wire netting and outer layer wire netting are spot-welded with first pipe, and the middle of the inner layer wire netting and outer layer wire netting is fixed by wire binding. The first temperature measuring pipe mouth is provided with a first thermometer, the second temperature measuring pipe mouth is provided with a second thermometer, and the third temperature measuring pipe mouth is provided with a third thermometer, and the first thermometer, the second thermometer and the third thermometer are connected with a controller.

2. The temperature measuring structure for a large diameter reaction vessel according to claim 1, wherein: The controller is a PLC controller.

3. The temperature measuring structure for a large diameter reaction vessel according to claim 2, wherein: The wall thickness of the second pipe is thicker than that of the first pipe.

4. The temperature measuring structure for a large diameter reaction vessel according to claim 1, wherein: The inner layer wire netting, the outer layer wire netting and the wire are made of stainless steel material.

5. The temperature measuring structure for a large diameter reaction vessel according to claim 1, wherein: The first pipe is provided with three rows of small holes along its axial direction, including two rows of upper small holes and one row of lower small holes, the two rows of upper small holes are arranged at an angle of 30 ° with the central axis, and the one row of lower small holes is located on the central axis.

6. The temperature measuring structure for a large diameter reaction vessel according to claim 1, wherein: The edge overlap of the inner layer wire netting and the edge overlap of the outer layer wire netting are arranged in a staggered manner in the circumferential direction.

7. The temperature measuring structure for a large diameter reaction vessel according to claim 1, wherein: When the inner layer wire netting and the outer layer wire netting are fixed by wire binding, the position of the wire binding is staggered with the position of the small holes on the first pipe.

8. The temperature measuring structure for a large diameter reaction vessel according to claim 1, wherein: ​

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