Thermometer temperature measuring structure suitable for large-diameter reaction container

Abstract

The invention 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 which are arranged in the reaction container in a crossed manner, every two adjacent thermometer temperature-measuring pipe orifices are arranged at an included angle of 60 degrees, 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, and a plurality of small holes are formed in the second connecting pipe in the axis direction of the second connecting pipe. An inner-layer silk screen is wound on the outer side of the first connecting pipe, 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] The invention relates to the field of reaction vessels, and in particular to a thermometer temperature measuring structure suitable for reaction vessels with large diameters. [Background technology]

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

[0003] The thermometer used in the reaction vessel mainly has the following functions: measuring the temperature of the working medium in the container, so that the temperature of the working medium is controlled within the specified range to meet the production process requirements. Please refer to the prior art CN218600716U, CN212539443U. Due to the pressure in the pressure vessel, the thermometer nozzle in the prior art generally adopts a closed structure, that is, a sleeve is used to isolate the thermometer from the medium, the medium is on the outside of the sleeve, and the thermometer is on the inside of the sleeve. Such a structure can prevent the pressure in the pressure vessel from impacting the thermometer. When measuring the temperature, the temperature of the working medium is transferred to the sleeve, and then the thermometer in the sleeve detects the temperature of the sleeve as the temperature of the working medium. The defects of this thermometer temperature measurement structure are: 1. In fact, there is still a temperature difference between the temperature of the sleeve and the temperature of the working medium. Taking the temperature of the sleeve as the temperature of the working medium causes the measured temperature of the working medium to be inaccurate. 2. This thermometer temperature measurement structure is only applicable to 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 technical problems. [Summary of the invention]

[0005] In order to solve the above problems, the object of the present invention is to provide a thermometer temperature measurement structure suitable for large-diameter reaction vessels, which can improve the detection accuracy of the working medium temperature.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a thermometer temperature measuring structure suitable for a large-diameter reaction vessel, comprising: a first thermometer temperature measuring nozzle, a second thermometer temperature measuring nozzle and a third thermometer temperature measuring nozzle, the first thermometer temperature measuring nozzle, the second thermometer temperature measuring nozzle and the third thermometer temperature measuring nozzle are arranged in a cross shape in the reaction vessel, and every two adjacent thermometer temperature measuring nozzles are arranged at an angle of 60°, the vertical distances of the first thermometer temperature measuring nozzle, the second thermometer temperature measuring nozzle and the third thermometer temperature measuring nozzle from the center of the reaction vessel are all greater than 500mm, and the first thermometer temperature measuring nozzle, the second thermometer temperature measuring nozzle and the third thermometer temperature measuring nozzle are arranged at an angle of 60° between each two adjacent thermometer temperature measuring nozzles. The three temperature measuring pipe outlets have the same structure, including: a first connecting pipe, a second connecting pipe, a sealing plate and a flange, the sealing plate is welded to the inner free end of the first connecting pipe, the second connecting pipe is inserted into the reaction vessel cylinder and welded to the reaction vessel cylinder, the part of the second connecting pipe protruding from the reaction vessel cylinder is welded to the flange, the first connecting pipe is provided with several rows of small holes along its axial direction, the outer side of the first connecting pipe is wrapped with an inner layer of wire mesh, the outer side of the inner layer of wire mesh is wrapped with an outer layer of wire mesh, the inner layer of wire mesh and the outer layer of wire mesh cover all the small holes, both ends of the inner layer of wire mesh and the outer layer of wire mesh are spot welded to the first connecting pipe, and the middle of the inner layer of wire mesh and the outer layer of wire mesh are fixed by binding with metal wire.

[0007] Preferably, a thermometer temperature measuring structure suitable for a large diameter reaction vessel in the present invention is further configured as follows: a first thermometer is provided in the first thermometer temperature measuring tube mouth, a second thermometer is provided in the second thermometer temperature measuring tube mouth, a third thermometer is provided in the third thermometer temperature measuring tube mouth, and the first thermometer, the second thermometer and the third thermometer are all connected to a controller.

[0008] Preferably, a thermometer temperature measurement structure suitable for a large diameter reaction vessel in the present invention is further configured as follows: the controller is a PLC controller.

[0009] Preferably, the temperature measuring structure of a thermometer applicable to a reaction vessel with a large diameter in the present invention is further configured as follows: the wall thickness of the second connecting pipe is thicker than the wall thickness of the first connecting pipe.

[0010] Preferably, a temperature measuring structure of a thermometer suitable for a large diameter reaction vessel in the present invention is further configured as follows: the inner wire mesh, the outer wire mesh and the metal wire are all made of stainless steel material.

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

[0012] Preferably, a temperature measuring structure of a thermometer suitable for a large diameter reaction vessel in the present invention is further configured as follows: the overlapping edge of the inner layer screen and the overlapping edge of the outer layer screen are staggered in the circumferential direction.

[0013] Preferably, a temperature measuring structure of a thermometer suitable for a large diameter reaction vessel in the present invention is further configured as follows: when the inner layer wire mesh and the outer layer wire mesh are fixed by binding with metal wires, the position of the metal wire binding is staggered with the position of the small hole on the first connecting pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the present invention arranges three thermometer temperature measuring nozzles in a cross shape in the reaction container, and the three thermometers can respectively measure the medium temperature at three positions on the circumference of the reaction container, and then the controller takes the average value according to the values ​​measured by the three thermometers to improve the accuracy of medium temperature detection. In addition, the present invention designs the first connecting pipe to be a structure of small holes and wire mesh, so that the working medium can pass through the first connecting pipe, so that the thermometer can directly contact the working medium to measure the most real temperature of the working medium, and can prevent impurities in the working medium from entering the nozzle to damage the thermometer. In addition, the small holes can alleviate the impact of the working medium pressure on the thermometer, thereby increasing the service life of the thermometer.

Brief Description of the Drawings

[0015] Figure 1 The figure is a schematic diagram of the arrangement structure of three temperature measuring nozzles of the thermometer in the reaction container in the present invention.

[0016] Figure 2 It is a structural schematic diagram of the first thermometer temperature measuring pipe mouth in the present invention.

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the first connecting pipe in the present invention.

[0018] Figures 1 to 3 Middle: 1. The first thermometer temperature measuring pipe mouth, 10. The first connecting pipe, 100. The upper row of small holes, 101. The lower row of small holes, 11. The second connecting pipe, 12. The sealing plate, 13. The flange, 14. The inner wire mesh, 140. The overlapping edge of the inner wire mesh, 15. The outer wire mesh, 150. The overlapping edge of the outer wire mesh, 16. The metal wire, 2. The second thermometer temperature measuring pipe mouth, 3. The third thermometer temperature measuring pipe mouth, 4. The reaction vessel. [Specific implementation method]

[0019] The following is a further detailed description of a thermometer temperature measurement structure suitable for a large diameter reaction vessel according to the present invention through specific embodiments.

[0020] Ginseng Figures 1 to 3As shown, a thermometer temperature measuring structure suitable for a large diameter reaction vessel comprises: a first thermometer temperature measuring nozzle 1, a second thermometer temperature measuring nozzle 2 and a third thermometer temperature measuring nozzle 3, wherein the first thermometer temperature measuring nozzle 1, the second thermometer temperature measuring nozzle 2 and the third thermometer temperature measuring nozzle 3 are arranged in a cross shape in the reaction vessel 4, and each two adjacent thermometer temperature measuring nozzles are arranged at an angle of 60°, and the vertical distances of the first thermometer temperature measuring nozzle 1, the second thermometer temperature measuring nozzle 2 and the third thermometer temperature measuring nozzle 3 from the center of the reaction vessel 4 are all greater than 500 mm, so that the circumferential temperature can be measured uniformly. A first thermometer (not shown) is arranged in the first thermometer temperature measuring nozzle 1, a second thermometer (not shown) is arranged in the second thermometer temperature measuring nozzle 2, and a third thermometer (not shown) is arranged in the third thermometer temperature measuring nozzle 3, and 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), which may include a central processing unit (CPU), a read-only memory (ROM), a random access memory (RAM), a timing module, a digital analog conversion module (A / D converter), and a plurality of input / output ports. Of course, the controller may also use other forms of integrated circuits, such as: Application Specific Integrated Circuit (ASIC) or 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 the average value.

[0021] The first thermometer temperature measuring nozzle 1 includes: a first pipe 10, a second pipe 11, a sealing plate 12 and a flange 13. The wall thickness of the second pipe 11 is thicker than that of the first pipe 10. The advantage of such a design is that the strength of the opening of the cylinder of the reaction vessel 4 can be strengthened. The sealing plate 12 is welded to the inner free end of the first pipe 10, the second pipe 11 is penetrated in the cylinder of the reaction vessel 4 and welded to the cylinder of the reaction vessel 4, and the part of the second pipe 11 protruding out of the cylinder of the reaction vessel 4 is welded to the flange 13. The first pipe 10 is provided with three rows of small holes along its axial direction, including two rows of upper rows of small holes 100 and one row of lower rows of small holes 101. The two rows of upper rows of small holes 100 are respectively arranged at an angle of 30° with the central axis, and the one row of lower rows of small holes 101 is located on the central axis. This arrangement structure of small holes can greatly reduce the impact of the working medium on the thermometer. The outer side of the first connecting pipe 10 is wound with an inner layer wire mesh 14, and the outer layer wire mesh 15 is wound with an outer layer wire mesh 15. The inner layer wire mesh 14 and the outer layer wire mesh 15 cover all the small holes. Both ends of the inner layer wire mesh 14 and the outer layer wire mesh 15 are spot welded to the first connecting pipe 10. The middle of the inner layer wire mesh 14 and the outer layer wire mesh 15 are bound and fixed by a metal wire 16. When the middle of the inner layer wire mesh 14 and the outer layer wire mesh 15 are bound and fixed by the metal wire 16, the binding position of the metal wire 16 is staggered with the position of the small holes on the first connecting pipe, so as to avoid blocking the small holes. In this embodiment, the inner layer wire mesh 14, the outer layer wire mesh 15 and the metal wire 16 are all made of stainless steel, so they have good corrosion resistance. The edge overlap 140 of the inner wire mesh 14 and the edge overlap 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 is loose after long-term use of the equipment, the wire mesh can still cover the small holes. The structures of the second thermometer temperature measuring pipe mouth 2 and the third thermometer temperature measuring pipe mouth 3 are the same as the structure of the first thermometer temperature measuring pipe mouth 1, so they are not repeated here.

[0022] In summary, the present invention arranges three thermometer temperature measuring nozzles in a cross shape in the reaction container. The three thermometers can respectively measure the medium temperature at three positions on the circumference of the reaction container, and then the controller takes the average value according to the values ​​measured by the three thermometers to improve the accuracy of medium temperature detection. In addition, the present invention designs the first connecting pipe to be a structure of small holes and wire mesh, so that the working medium can pass through the first connecting pipe, so that the thermometer can directly contact the working medium to measure the most real temperature of the working medium, and impurities in the working medium can be prevented from entering the nozzle to damage the thermometer. In addition, the small holes can alleviate the impact of the working medium pressure on the thermometer, thereby increasing the service life of the thermometer.

[0023] The above-mentioned embodiments are only illustrative of the principles and effects of the invention, as well as some embodiments of its application, and are not intended to limit the invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the invention, and all of these belong to the protection scope of the invention.

Claims

1. A thermometer temperature measurement structure suitable for a large diameter reaction vessel, characterized in that: include: The first thermometer temperature measuring pipe opening, the second thermometer temperature measuring pipe opening and the third thermometer temperature measuring pipe opening are arranged in a cross shape in the reaction container, and every two adjacent thermometer temperature measuring pipe openings are arranged at an angle of 60°. The vertical distances of the first thermometer temperature measuring pipe opening, the second thermometer temperature measuring pipe opening and the third thermometer temperature measuring pipe opening from the center of the reaction container are all greater than 500 mm. The first thermometer temperature measuring pipe opening, the second thermometer temperature measuring pipe opening and the third thermometer temperature measuring pipe opening are all the same in structure, including: a first connecting pipe, a second connecting pipe, and a third thermometer temperature measuring pipe opening. Two connecting pipes, a sealing plate and a flange, the sealing plate is welded to the inner free end of the first connecting pipe, the second connecting pipe is inserted into the reaction vessel cylinder and welded to the reaction vessel cylinder, the part of the second connecting pipe protruding from the reaction vessel cylinder is welded to the flange, the first connecting pipe is provided with several rows of small holes along its axial direction, the outer side of the first connecting pipe is wrapped with an inner layer of wire mesh, the outer side of the inner layer of wire mesh is wrapped with an outer layer of wire mesh, the inner layer of wire mesh and the outer layer of wire mesh cover all the small holes, both ends of the inner layer of wire mesh and the outer layer of wire mesh are spot welded to the first connecting pipe, and the inner layer of wire mesh and the outer layer of wire mesh are fixed by binding with metal wire in the middle.

2. A thermometer temperature measuring structure suitable for a large diameter reaction vessel as claimed in claim 1, characterized in that: The first thermometer temperature measuring pipe mouth is provided with a first thermometer, the second thermometer temperature measuring pipe mouth is provided with a second thermometer, the third thermometer temperature measuring pipe mouth is provided with a third thermometer, and the first thermometer, the second thermometer and the third thermometer are all connected to the controller.

3. A thermometer temperature measuring structure suitable for a large diameter reaction vessel as claimed in claim 2, characterized in that: The controller is a PLC controller.

4. A thermometer temperature measuring structure suitable for a large diameter reaction vessel as claimed in claim 1, characterized in that: The wall thickness of the second connecting pipe is thicker than the wall thickness of the first connecting pipe.

5. A thermometer temperature measuring structure suitable for a large diameter reaction vessel as claimed in claim 1, characterized in that: The inner wire mesh, the outer wire mesh and the metal wire are all made of stainless steel.

6. A thermometer temperature measuring structure suitable for a large diameter reaction vessel as claimed in claim 1, characterized in that: The first pipe is provided with three rows of small holes along its axial direction, including two upper rows of small holes and one lower row of small holes, the two upper rows of small holes are respectively arranged at an angle of 30° to the central axis, and the one lower row of small holes is located on the central axis.

7. A thermometer temperature measurement structure suitable for a large diameter reaction vessel as claimed in claim 1, characterized in that: The overlapping edge of the inner layer screen and the overlapping edge of the outer layer screen are staggered in the circumferential direction.

8. A thermometer temperature measuring structure suitable for a large diameter reaction vessel as claimed in claim 1, characterized in that: When the inner layer wire mesh and the outer layer wire mesh are bound and fixed by the metal wire, the position of the metal wire binding is staggered with the position of the small hole on the first connecting pipe.

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