Reaction kettle leak-proof temperature measuring device under corrosive medium

Abstract

The utility model provides a kind of reaction kettle no-leak point temperature measuring device under corrosive medium, it is related to reaction kettle temperature measuring device technical field, basic support component, including tantalum plate and support tube, the bottom end of tantalum plate and support tube is fixedly connected, and assembly passage is formed in support tube and is passed through up and down;Temperature measuring unit, the temperature measuring unit is movably housed in the assembly passage, the temperature measuring unit includes thermocouple and elastic fixing piece, and the elastic fixing piece acts on thermocouple;Locking mechanism is set to the side of support tube away from tantalum plate, for locking the temperature measuring unit in the assembly passage in predetermined position, the device adopts full sealing rigid connection and anticorrosive coating in key position, fundamentally eliminates leakage and resists medium corrosion.Its modular structure can realize the one-key type of temperature measuring unit is extracted and changes, greatly simplifies maintenance process.Overall design is in guaranteeing long-term stable operation, significantly reduces maintenance cost and downtime.

Description

Technical Field

[0001] The utility model relates to the technical field of reactor temperature measurement devices, and specifically relates to a reactor leak-free temperature measurement device under corrosive media. Background Technique

[0002] The temperature measurement device supporting the reactor and the tower is the core monitoring instrument in chemical production. By perceiving the temperature fluctuations in the reactor in real time, it provides key guarantees for production safety and product quality. This device transmits signals to the control system to achieve automatic adjustment of heating or cooling, which can not only prevent side reactions and even safety accidents caused by overheating, but also ensure the efficient progress of the main reaction by precisely controlling the temperature, so as to achieve the purpose of improving product yield and reducing energy consumption.

[0003] Existing reactor temperature measurement devices are usually used under corrosive and high-temperature working conditions. For harsh working conditions such as corrosive media and high temperatures, traditional temperature measurement devices often use materials such as corrosion-resistant alloys or ceramics. However, corrosion-resistant alloys still perform poorly in some strong corrosion environments and are costly; ceramic materials (such as alumina and zirconia) are brittle and have poor thermal shock resistance, and there is a risk of cracking and damage. In addition, although the polytetrafluoroethylene (PTFE) lining has corrosion resistance, its thermal conductivity is extremely poor, resulting in large temperature measurement deviations, and it cannot be applied to high temperatures above 180°C and negative pressure working conditions, and its scope of application is limited.

[0004] A reactor temperature rapid measurement device with the publication number of "CN219104204U" in the prior art includes a temperature measurement sleeve. The temperature measurement sleeve is sleeved on the top cover of the reactor. A temperature transmitter is installed at the top of the temperature measurement sleeve. A thermal resistor is arranged in the inner cavity of the temperature measurement sleeve. The top of the thermal resistor is electrically connected to the temperature transmitter. The bottom of the temperature measurement sleeve is sleeved with a bottom end cover through a threaded structure. The bottom of the bottom end cover is sleeved with a metal tantalum nail through a threaded structure. The top surface of the metal tantalum nail tightly clamps the thermal resistor. The metal tantalum nail extends into the liquid material, and quickly conducts the material temperature to the thermal resistor through the metal tantalum nail. By the characteristic that the resistance value of the thermal resistor changes with temperature, the resistance value is converted into the corresponding temperature through the temperature transmitter, and the temperature is displayed quickly and timely. The rapid temperature measurement reaction is rapid, the response time is short, and it can display the real-time temperature of the liquid material in about 1 to 2 seconds. It detects the liquid material sensitive to temperature and takes corresponding measures in time to avoid safety accidents.

[0005] However, the above device still has obvious defects during use: the above device has a complex structure, which is not conducive to cost control, and the setting of the assembly structure is not conducive to the rapid maintenance of the temperature measurement device. At the same time, a connecting component is arranged at one end of the reactor for the above device, and the setting of the connecting component is not conducive to the internal sealing protection of the temperature control device, which may affect the service life of the temperature control device. Content of the Utility Model

[0006] The purpose of this invention is to provide a leak-free temperature measurement device for a reactor under corrosive media, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A leak-free temperature measuring device for a reactor under corrosive media, comprising: The basic support assembly includes a tantalum plate and a support tube. The tantalum plate is fixedly connected to the bottom end of the support tube to form a base for supporting the entire device. An assembly channel running through the top and bottom is formed inside the support tube. A temperature measuring unit is movably housed within the assembly channel. The temperature measuring unit includes a thermocouple and an elastic fixing member. The elastic fixing member acts on the thermocouple to maintain thermally conductive contact between the probe end of the thermocouple and the inner surface of the tantalum plate. A locking mechanism is provided on the side of the support tube away from the tantalum plate, for locking the temperature measuring unit at a predetermined position within the assembly channel.

[0008] Preferably, the tantalum plate and the support tube are fixedly connected by end-to-end welding.

[0009] Preferably, the contact area between the probe end of the thermocouple and the tantalum plate is filled with a thermally conductive medium, which is thermally conductive putty or thermally conductive silicone grease.

[0010] Preferably, the temperature measuring unit further includes a signal line protective sleeve that is movably housed within the assembly channel. The elastic fixing member is a compression spring, with both ends of the elastic fixing member connected to the end faces of the signal line protective sleeve and the thermocouple on opposite sides, thereby ensuring that the probe end of the thermocouple is tightly pressed against the tantalum plate.

[0011] Preferably, the locking mechanism is a fastening sleeve, which is fixed to the top port of the support tube by means of threaded connection or interference fit, and is locked by pressing the upper part of the signal line protective sleeve.

[0012] Preferably, the fastening sleeve has an internal lead channel for the signal wire of the thermocouple to pass through.

[0013] Preferably, the upper outer wall of the support tube is provided with a connecting part for sealing connection with the installation interface of the reactor.

[0014] Preferably, the fastening sleeve is further covered with an external protective shell.

[0015] Preferably, the support tube is a stainless steel tube, and the outside of the support tube is coated with an anti-corrosion coating.

[0016] Preferably, the two ends of the signal line are electrically connected to a thermocouple and a temperature display, respectively, and the signal line also passes through a protective channel opened inside the signal line protective sleeve and an outer protective shell.

[0017] Compared with the prior art, the beneficial effects of this utility model are: This device employs a fully welded rigid sealing design without gaskets or soft seals. Tantalum plates and stainless steel pipes are permanently connected via end-face welding and then locked in place by a fastening sleeve, forming a complete sealing system. This structure completely eliminates the risk of leakage caused by gasket aging or soft seal damage, significantly improving the long-term sealing performance and service life of the device under complex reactor conditions, ensuring stable and reliable operation. A specialized anti-corrosion coating is applied to critical contact areas such as tantalum plates and stainless steel pipes. The coating focuses on covering the exposed upper surface of the spring plate, the exposed section of the stainless steel pipe, and the junction between the pipe and the spring plate, ensuring comprehensive protection of easily corroded areas. This coating system effectively eliminates blind spots and potential leak points, significantly enhancing the durability and service life of the equipment in corrosive media environments. The device employs a modular temperature measurement unit design, supporting "one-click" quick disassembly. When maintenance or replacement is required, simply loosen the upper fastening sleeve to completely pull out the entire temperature measurement unit, consisting of the thermocouple, signal wire protective sleeve, and compression spring, along the inner diameter of the stainless steel tube. This design eliminates the need for complete disassembly, greatly simplifying the maintenance process, saving time and costs, and minimizing the impact on the normal operation of the reactor.

[0018] This device employs a fully sealed rigid connection and anti-corrosion coating on key components, fundamentally eliminating leakage and resisting media corrosion. Its modular structure allows for one-click replacement of the temperature measurement unit, greatly simplifying the maintenance process. The overall design ensures long-term stable operation while significantly reducing maintenance costs and downtime. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the overall structure of this utility model.

[0020] In the diagram: 1. Tantalum plate, 2. Support tube, 3. Assembly channel, 4. Thermocouple, 5. Elastic fastener, 6. Heat-conducting medium, 7. Signal line protective sleeve, 8. Fastening sleeve, 9. Signal line, 10. Connecting part, 11. External protective shell, 12. Anti-corrosion coating. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 This utility model provides a technical solution: Example 1: A leak-free temperature measuring device for a reactor under corrosive media, comprising: The basic support assembly includes a tantalum plate 1 and a support tube 2. The tantalum plate 1 is fixedly connected to the bottom end of the support tube 2 to form a base for supporting the entire device. An assembly channel 3 is formed inside the support tube 2, running from top to bottom. A temperature measuring unit is movably housed in the assembly channel 3. The temperature measuring unit includes a thermocouple 4 and an elastic fixing member 5. The elastic fixing member 5 acts on the thermocouple 4 to keep the probe end of the thermocouple 4 in thermal contact with the inner surface of the tantalum plate 1. A locking mechanism is set on the side of the support tube 2 away from the tantalum plate 1 to lock the temperature measuring unit in a predetermined position within the assembly channel 3.

[0023] In this embodiment, the tantalum plate 1 and the support tube 2 are fixedly connected by end-to-end welding to form the basic support component of the device. The support tube 2 is a stainless steel tube, and the outside of the support tube 2 is coated with an anti-corrosion coating 12. Its length is customized according to the depth of the reactor in the actual application scenario to ensure that the device can be adapted to reactors of different specifications and can reach deep into the reactor to achieve accurate temperature measurement. An assembly channel 3 is provided inside the support tube 2 for assembling the temperature measuring unit. The support tube 2 is divided into upper and lower functional areas. The upper part is the connection part 10 that is fixedly connected to the reactor. The main function of this part of the pipe is to serve as a connecting and mating component between the device and the reactor, ensuring the stability and sealing of the connection between the device and the reactor, and providing a channel for the installation of subsequent components and signal transmission. The lower part is the part that extends into the reactor to measure the temperature.

[0024] The device for temperature measurement is thermocouple 4, which is the core component of temperature measurement. It is fixed inside the assembly channel 3 by a compression spring. In order to improve the temperature conduction efficiency, a heat-conducting material is applied to the contact area between thermocouple 4 and tantalum plate 1. This can increase the contact area between the two and reduce the loss in the heat conduction process, ensuring that thermocouple 4 can quickly and accurately capture the temperature signal inside the reactor transmitted by tantalum plate 1.

[0025] To ensure the normal operation of the device, it also includes a signal line protective sleeve 7. This protective sleeve 7, together with the compression spring and the front end of the thermocouple 4, forms a movable temperature measuring unit, which is embedded in a stainless steel pipe. A fastening sleeve 8 is installed at the upper end of the stainless steel pipe. The fastening sleeve 8, through a threaded or interference fit with the support pipe 2, locks the upper part of the protective sleeve 7, thus securing the device inside the support pipe 2. Simultaneously, an external protective shell 11 covers the fastening sleeve 8, further enhancing its overall protective performance and preventing interference and damage to internal components from the external environment. Furthermore, the fastening sleeve 8 has an internal interconnecting structure, providing a channel for the signal line 9 of the thermocouple 4 to be led out, ensuring that the signal line 9 can be smoothly connected to the external temperature display surface, enabling real-time visualization of temperature data.

[0026] Workflow and temperature measurement logic: Device installation: Determine the length of the support tube 2 according to the depth of the reactor. After welding the tantalum plate 1 to the support tube 2, fix the thermocouple 4 coated with thermal conductive mud inside the support tube 2 with a compression spring. Embed the signal line protective sleeve 7 and then lock the entire temperature measuring unit with the fastening sleeve 8. Cover the outside of the fastening sleeve 8 with an outer protective shell 11. Finally, connect the device to the reactor through the connecting part 10. The signal line 9 is led out from inside the fastening sleeve 8 and connected to the temperature display surface.

[0027] Temperature Measurement: The temperature inside the reactor is transferred to the tantalum plate 1 via a medium. The tantalum plate 1 then conducts heat to the thermocouple 4, which is coated with thermally conductive mud. The thermocouple 4 converts the temperature signal into an electrical signal, which is transmitted to the temperature display surface via the signal line 9, enabling real-time monitoring and display of the temperature inside the reactor. During this process, the preset compression of the clamping spring plays a crucial role, ensuring that the thermocouple 4 remains in close contact with the tantalum plate 1 throughout the operation of the device. This prevents poor contact due to vibration, displacement, or other factors, thus guaranteeing the accuracy and stability of the temperature measurement.

[0028] Maintenance and Upgrades: When the device requires maintenance, loosen the fastening sleeve 8, pull out the temperature measuring unit, and inspect, repair or replace components such as the thermocouple 4 and the signal line protective sleeve 7. After completion, re-embed the temperature measuring unit into the support tube 2 and lock the fastening sleeve 8 to restore its use. The whole process is simple and does not require professional or complicated tools and techniques.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leak-proof temperature measuring device for a reactor under corrosive medium, characterized in that, include: The basic support assembly includes a tantalum plate and a support tube. The tantalum plate is fixedly connected to the bottom end of the support tube to form a base for supporting the entire device. An assembly channel running through the top and bottom is formed inside the support tube. A temperature measuring unit is movably housed within the assembly channel. The temperature measuring unit includes a thermocouple and an elastic fixing member. The elastic fixing member acts on the thermocouple to maintain thermally conductive contact between the probe end of the thermocouple and the inner surface of the tantalum plate. A locking mechanism is provided on the side of the support tube away from the tantalum plate, for locking the temperature measuring unit at a predetermined position within the assembly channel.

2. The device according to claim 1, characterized in that: The tantalum plate and the support tube are fixedly connected by end-to-end welding.

3. The device according to claim 1, characterized in that: The contact area between the probe end of the thermocouple and the tantalum plate is filled with a thermally conductive medium, which is thermally conductive putty or thermally conductive silicone grease.

4. The device according to claim 1, characterized in that: The temperature measuring unit also includes a signal line protective sleeve that is movably housed within the assembly channel. The elastic fixing member is a compression spring, with both ends of the elastic fixing member connected to the end faces of the signal line protective sleeve and the thermocouple on opposite sides, and ensuring that the probe end of the thermocouple is tightly pressed against the tantalum plate.

5. The device according to claim 4, characterized in that: The locking mechanism is a fastening sleeve, which is fixed to the top port of the support tube by means of threaded connection or interference fit, and is locked by pressing the upper part of the signal line protective sleeve.

6. The device according to claim 5, characterized in that: The fastening sleeve has an internal lead channel for the signal wire of the thermocouple to pass through.

7. The device according to claim 1, characterized in that: The upper outer wall of the support tube is provided with a connecting part for sealing connection with the installation interface of the reactor.

8. The device according to claim 6, characterized in that: The fastening sleeve is also covered with an external protective shell.

9. The device according to claim 1, characterized in that: The support tube is made of stainless steel and is coated with an anti-corrosion coating on its exterior.

10. The device according to claim 8, characterized in that: The two ends of the signal line are electrically connected to a thermocouple and a temperature display, respectively. The signal line also passes through a protective channel opened inside the signal line protective sleeve and an outer protective shell.

Images