Temperature measuring device for reaction kettle

Abstract

The utility model relates to the technical field of metallurgical chemical reaction containers, in particular to a temperature measuring device for a reaction kettle, which consists of an anti-corrosion outer sleeve, an anti-corrosion inner sleeve and a thermal resistor arranged in the anti-corrosion inner sleeve, the problems that the thickness of the pipe wall is not uniform due to rolling and stretching of the fluorine plastic pipe, internal stress is generated, and leakage is caused can be solved, and the complex production process requirements can be met; the method has the advantages of high temperature resistance and acid and alkali corrosion resistance, and the detection precision can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical and chemical reaction containers, in particular to a temperature measuring device for a reaction kettle. Background Art

[0002] Measuring the temperature of corrosive media has always been a challenge in industry. Especially under harsh conditions involving strong acids, particles, and crystals, effective temperature measurement solutions are still lacking. For high reaction temperatures, only materials with some corrosion resistance can be used, but this requires regular, costly and troublesome replacement of the measuring device. Alternatively, non-contact temperature measurement devices can be used, but these offer poor accuracy. Non-contact temperature sensors offer a long service life and corrosion resistance, but their complex structure, high manufacturing cost, and poor temperature measurement accuracy. Contact-based temperature sensors, on the other hand, feature a temperature sensing element assembled within a metal protective tube secured by a connecting bracket and placed directly at the temperature measurement point. This offers a simpler structure, accurate temperature measurement, and high sensitivity. Because commonly used corrosion-resistant materials have poor mechanical strength and some are difficult to machine, the associated connecting components and protective tubes are typically manufactured from metal. Consequently, due to their structural limitations, they cannot be used to measure media in high-temperature, high-pressure, or highly corrosive environments. To overcome the above-mentioned defects, a corrosion-resistant material protective layer is usually sprayed on the outer surface of the metal protective tube. However, due to the uneven coating or pores on its surface, highly corrosive media are prone to leakage, which will reduce its service life. Some also use a fluoroplastic tube to add a corrosion-resistant protective layer to the outer periphery of the metal protective tube by stretching, flanging and pressing. However, after the fluoroplastic tube is rolled, stretched and pressed on the outer periphery of the metal protective tube, it is easy to have uneven tube wall thickness caused by rolling, stretching and pressing, which can cause internal stress and leakage. In addition, the accuracy of temperature detection needs to be improved. According to domestic and foreign public literature reports, to date, there is no ideal sensor for measuring the temperature of media in high-temperature, high-pressure and highly corrosive environments. Therefore, it is particularly important to propose a contact temperature measuring device for reactors. Utility Model Content

[0003] The purpose of the utility model is to provide a temperature measuring device for a reactor, which is resistant to high temperatures and acid and alkali corrosion and convenient for temperature measurement, so as to at least partially solve the problems existing in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] The invention discloses a temperature measuring device for a reactor, which is composed of an anti-corrosion outer sleeve, an anti-corrosion inner sleeve and a thermal resistor arranged inside the anti-corrosion inner sleeve.

[0006] As a preferred solution of the temperature measuring device for a reactor of the utility model, the anti-corrosion outer jacket is a PTFE-lined tube, which is a cavity with an open end and an enamel ground-mouth sealing plug at the open end.

[0007] As a preferred solution of the temperature measuring device for a reactor of the utility model, the enamel ground-mouth sealing plug includes a plug head and a tubular plug wall extending perpendicular to the plane end of the plug head.

[0008] As a preferred solution of the temperature measuring device for a reactor of the utility model, the anti-corrosion inner sleeve is a stainless steel tube, one end of which extends into the anti-corrosion outer sleeve and the other end protrudes from the open end of the anti-corrosion outer sleeve. The tubular plug wall of the enamel ground-mouth sealing plug is inserted between the inner wall of the anti-corrosion outer sleeve and the outer wall of the anti-corrosion inner sleeve to achieve sealing.

[0009] The beneficial effects of the utility model are:

[0010] The utility model discloses a temperature measuring device for a reactor, which consists of an anti-corrosion outer sleeve, an anti-corrosion inner sleeve and a thermal resistor installed inside the anti-corrosion inner sleeve. The device can prevent the problems of uneven pipe wall thickness, internal stress and leakage caused by rolling and stretching of fluoroplastic pipes, and is conducive to adapting to complex production process requirements. It also has the dual advantages of high temperature resistance and acid and alkali corrosion resistance, and can greatly improve detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0012] Figure 1 This is a schematic structural diagram of a temperature measuring device for a reactor according to the present invention.

[0013] Figure 2 This is a schematic diagram of the components of the temperature measuring device for a reactor of the present invention.

[0014] In the figure: 1-anti-corrosion outer sleeve, 2-sealing plug, 3-anti-corrosion inner sleeve, 4-temperature measuring device.

[0015] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0016] The following will be a clear and complete description of the technical solutions in the embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0017] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0018] The present invention discloses a temperature measuring device for a reactor. Figure 1-2 As shown, it is composed of an anti-corrosion outer sleeve 1, an anti-corrosion inner sleeve 3, and a thermal resistor installed inside. The anti-corrosion outer sleeve 1 is a PTFE-lined tube, which is a cavity with an open end. At its open end, there is an enamel ground-mouth sealing plug 2. The enamel ground-mouth sealing plug 2 includes a plug head and a tubular plug wall extending perpendicular to the flat end of the plug head. It has the dual advantages of high temperature resistance and acid and alkali corrosion resistance. The anti-corrosion inner sleeve 3 is a stainless steel tube, one end of which extends into the anti-corrosion outer sleeve 1 and the other end protrudes from the open end of the anti-corrosion outer sleeve 1. The tubular plug wall of the enamel ground-mouth sealing plug 2 is inserted between the inner wall of the anti-corrosion outer sleeve 1 and the outer wall of the anti-corrosion inner sleeve 2 to achieve sealing. This can prevent the uneven thickness of the pipe wall caused by rolling and stretching, which generates internal stress and causes leakage, and is conducive to adapting to complex production process requirements.

[0019] In one embodiment of the present invention, the open end of the temperature measuring device is made of enameled glass, which is the key to ensuring temperature measurement accuracy. Using only PTFE-lined materials and stainless steel can easily lead to significant detection errors. However, enameled glass is sensitive and simple to use. Therefore, a replaceable enameled ground-joint sealing plug (i.e., the open end of the anti-corrosion jacket 1 is provided with an enameled ground-joint sealing plug 2) is used here, greatly improving detection accuracy and maintaining effectiveness with subsequent regular replacement.

[0020] When the temperature measuring device for a reactor of the utility model is used, the temperature measuring device is placed in the reactor. The temperature in the reactor can be accurately measured while being resistant to high temperature and acid and alkali corrosion. The enamel ground-mouth sealing plug can be replaced as needed during use to continuously maintain good detection accuracy.

[0021] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A temperature measuring device for a reactor, characterized in that: It consists of an anti-corrosion outer sleeve, an anti-corrosion inner sleeve and a thermal resistor installed inside the anti-corrosion inner sleeve. The anti-corrosion outer jacket is a PTFE-lined tube, which is a cavity with one end open. An enamel ground-mouth sealing plug is provided at the open end. The enamel ground-mouth sealing plug includes a plug head and a tubular plug wall extending perpendicular to the flat end of the plug head. It has the dual advantages of high temperature resistance and acid and alkali corrosion resistance. One end of the anti-corrosion inner sleeve extends into the anti-corrosion outer sleeve, and the other end protrudes from the open end of the anti-corrosion outer sleeve. The tubular plug wall of the enamel ground-mouth sealing plug is inserted between the inner wall of the anti-corrosion outer sleeve and the outer wall of the anti-corrosion inner sleeve to achieve sealing.

2. The temperature measuring device for a reactor according to claim 1, characterized in that: The anti-corrosion inner sleeve is made of stainless steel pipe.

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