Pressure safety monitoring device for imidazole synthesis reaction process

Abstract

The invention discloses a pressure safety monitoring device for an imidazole synthesis reaction process, and relates to the technical field of chemical production safety monitoring, the pressure safety monitoring device comprises a support plate, the upper end of the support plate is provided with a monitoring mechanism, the lower end of the support plate is provided with a protection mechanism, and the lower end of the protection mechanism is provided with a position adjusting mechanism; the protection mechanism comprises a damping base, multiple sets of guide grooves are formed in the upper end of the damping base, dampers are installed in four preformed holes in the upper end of the damping base, four sets of upper cylinders are fixedly installed at the lower end of the damping base, rubber springs are fixedly installed in each set of upper cylinders, and lower cylinders are fixedly installed at the movable ends of each set of dampers. According to the pressure safety monitoring device, cooperative suppression of vibration can be achieved, the strength of the vibration transmitted to the device body is remarkably reduced, the damping effect of the damping base is better exerted, and a solid guarantee is provided for stable operation of the pressure safety monitoring device in a vibration environment.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical production safety monitoring, and specifically to a pressure safety monitoring device for the imidazole synthesis reaction process. Background Technique

[0002] Imidazole synthesis refers to the process of preparing imidazole and its derivatives through a series of chemical reactions. Imidazole is a five-membered heterocyclic organic compound containing two nitrogen atoms, with unique chemical properties and wide application values, playing an important role in multiple fields such as medicinal chemistry, materials science, and biochemistry. The synthesis reaction process of imidazole compounds has extremely high requirements for pressure monitoring and safety control, and accurate and stable pressure monitoring is a key factor to ensure the smooth progress of the reaction and avoid safety accidents.

[0003] However, in the prior art, the characteristics of the imidazole synthesis reaction itself will generate vibrations that cannot be ignored. The continuous operation of the stirrer, the high-speed transportation of materials in the pipeline, the energy release and material changes during the chemical reaction process, as well as the wear and aging of equipment components, etc., will all cause vibrations. These vibrations will be transmitted to the pressure safety monitoring device through pipelines, brackets, etc., resulting in the loosening and displacement of internal components of the device, affecting the normal operation of core components such as the compensation metering structure and pressure sensors. Being in a vibration environment for a long time will not only cause the measurement error to accumulate continuously, but also lead to equipment failures, seriously reducing the reliability and stability of the device, increasing equipment maintenance costs and production safety risks. Summary of the Invention

[0004] The purpose of the present invention is to provide a pressure safety monitoring device for the imidazole synthesis reaction process to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A pressure safety monitoring device for the imidazole synthesis reaction process, including a support plate, a monitoring mechanism is arranged at the upper end of the support plate, a protection mechanism is arranged at the lower end of the support plate, and a position adjustment mechanism is arranged at the lower end of the protection mechanism;

[0006] The protection mechanism includes a shock-absorbing base. A plurality of guide grooves are opened at the upper end of the shock-absorbing base. Dampers are installed inside four reserved holes at the upper end of the shock-absorbing base. Four groups of upper cylinders are fixedly installed at the lower end of the shock-absorbing base. A rubber spring is fixedly installed inside each group of upper cylinders. The movable end of each group of dampers is fixedly installed with a lower cylinder. A connecting seat is fixedly installed on the outer wall of each group of lower cylinders. Four groups of first concave seats are fixedly installed on the outer wall of each group of connecting seats. A sliding block is slidably installed inside each group of guide grooves. A second concave seat is fixedly installed at the upper end of each group of sliding blocks. An inclined support frame is rotatably installed inside the plurality of first concave seats. A buffer spring is fixedly installed on the inner wall of each group of guide grooves.

[0007] Preferably, the lower ends of the four groups of rubber springs are respectively fixed to the inner bottom ends of the four groups of lower cylinders, and the other ends of the multiple groups of buffer springs are respectively fixed to one ends of the multiple groups of sliding blocks.

[0008] Preferably, sliding grooves are formed on both inner side walls of each group of guide grooves, and limiting blocks are slidably installed inside each group of sliding grooves.

[0009] Preferably, one ends of every two groups of limiting blocks are respectively fixed to both ends of one group of sliding blocks, and the lower parts of each group of diagonal braces are rotatably installed inside one group of second concave seats.

[0010] Preferably, the monitoring mechanism includes a protective box. A pressure sensor is fixedly installed at the upper end of the support plate. One end of the pressure sensor is fixedly installed with a three-way ball valve. The other end of the three-way ball valve is fixedly installed with a filter. The other end of the filter is fixedly installed with a corrugated pipe. The lower end of the corrugated pipe is fixedly installed with a pressure tapping pipe. The upper end of the support plate is successively installed with a safety control module, a compensation metering module, and a data processing integration module from front to back. An alarm is fixedly installed at the upper end of the support plate.

[0011] Preferably, the safety control module, the compensation metering module, and the data processing integration module are all located inside the protective box, and the lower end of the protective box is fixed to the upper end of the support plate.

[0012] Preferably, the safety control module, the compensation metering module, and the data processing integration module are all signal-connected to the pressure sensor. The compensation metering module is signal-connected to the data processing integration module. The alarm is electrically connected to the safety control module.

[0013] Preferably, the position adjusting mechanism includes a bottom plate. A screw rod and four groups of support rods are fixedly installed at the lower end of the shock-absorbing base. A hexagonal sleeve is sleeved on the outer wall of the screw rod. Guide cylinders are slidably sleeved on the outer walls of the four groups of support rods. The upper end of the hexagonal sleeve is fixedly installed with a mating seat. A rotating seat is rotatably installed inside the mating seat. A threaded seat is threadedly connected to the outer wall of the screw rod.

[0014] Preferably, a support frame is fixedly installed on the outer walls of the screw rod and the four groups of support rods. The bottom plate is located below the shock-absorbing base.

[0015] Preferably, the lower ends of the hexagonal sleeve and the four groups of guide cylinders are both fixed to the upper end of the bottom plate, and the lower end of the threaded seat is fixed to the upper end of the rotating seat.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. In the present invention, by setting up a monitoring mechanism, with the cooperation of the shock-absorbing base, dampers, and rubber springs, the four groups of rubber springs first come into play, converting vibration into their own elastic deformation and absorbing a part of the vibration energy. They can effectively absorb low-frequency and large-amplitude vibrations. Subsequently, the remaining vibration energy is transmitted to the four groups of dampers through the four groups of lower cylinders, converting the kinetic energy of the vibration into heat energy and dissipating it into the surrounding environment. This can achieve the collaborative suppression of vibration, significantly reduce the intensity of vibration transmitted to the device body, better exert the shock-absorbing effect of the shock-absorbing base, and provide a solid guarantee for the stable operation of the pressure safety monitoring device in a vibration environment.

[0018] 2. In the present invention, through the precise compensation of the compensation measurement module and the high-precision sensors of the pressure monitoring module, the influence of environmental factors on pressure measurement is effectively overcome, and the measurement accuracy is improved. The data processing integration module supports multiple industrial communication protocols, realizing seamless integration with the factory automation control system, facilitating the centralized management, analysis, and remote monitoring of pressure data, and providing strong support for production process optimization and safety management. Secondly, the multi-level alarm and emergency treatment device of the safety control module can timely detect abnormal pressure and take effective safety measures to prevent the occurrence of safety accidents and ensure the safety and stability of the production process.

[0019] 3. In the present invention, by setting up a position adjustment mechanism, it is convenient for the screw to drive the shock-absorbing base to move up and down, and drive the monitoring mechanism to move up and down together through the protection mechanism and the support plate, so that the height of the monitoring mechanism can be adjusted. The adjustment range can be designed according to actual needs, facilitating the adjustment of the device according to the height of the reactor, greatly improving the practicability and versatility of the device, enabling it to adapt to reactors of different specifications and heights, and meeting diverse production requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structure schematic diagram of a pressure safety monitoring device for an imidazole synthesis reaction process according to the present invention;

[0021] Figure 2 It is a side view of a pressure safety monitoring device for an imidazole synthesis reaction process according to the present invention;

[0022] Figure 3 It is a three-dimensional view of the monitoring mechanism and the protection mechanism in a pressure safety monitoring device for an imidazole synthesis reaction process according to the present invention;

[0023] Figure 4 It is a three-dimensional view of the protection mechanism in a pressure safety monitoring device for an imidazole synthesis reaction process according to the present invention;

[0024] Figure 5 It is in a pressure safety monitoring device for an imidazole synthesis reaction process according to the present inventionFigure 3 Schematic enlarged structure diagram of A

[0025] Figure 6 Bottom view of the support plate and protection mechanism of a pressure safety monitoring device for an imidazole synthesis reaction process of the present invention

[0026] Figure 7 Stereogram of a partial protection mechanism of a pressure safety monitoring device for an imidazole synthesis reaction process of the present invention

[0027] Figure 8 Stereogram of the support plate and monitoring mechanism of a pressure safety monitoring device for an imidazole synthesis reaction process of the present invention

[0028] Figure 9 Partial exploded structure diagram of the position adjustment mechanism in a pressure safety monitoring device for an imidazole synthesis reaction process of the present invention

[0029] In the figure: 1, support plate; 2, monitoring mechanism; 20, protection box; 21, pressure sensor; 22, three-way ball valve; 23, filter; 24, bellows; 25, pressure taking pipe; 26, safety control module; 27, alarm; 28, compensation measurement module; 29, data processing integration module; 3, protection mechanism; 31, shock absorption base; 32, guide groove; 33, damper; 34, upper cylinder; 35, rubber spring; 36, lower cylinder; 37, connecting seat; 38, first concave seat; 39, sliding block; 310, second concave seat; 311, inclined support; 312, limit block; 313, chute; 314, buffer spring; 4, position adjustment mechanism; 41, bottom plate; 42, screw; 43, support rod; 44, hexagonal sleeve; 45, guide cylinder; 46, mating seat; 47, rotating seat; 48, threaded seat; 49, support frame. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1: Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown in the figure: A pressure safety monitoring device for an imidazole synthesis reaction process, including a support plate 1, a monitoring mechanism 2 is arranged at the upper end of the support plate 1, a protection mechanism 3 is arranged at the lower end of the support plate 1, and a position adjustment mechanism 4 is arranged at the lower end of the protection mechanism 3;

[0032] The protection mechanism 3 includes a shock-absorbing base 31. A plurality of guide grooves 32 are opened at the upper end of the shock-absorbing base 31. Four damping devices 33 are installed inside the four reserved holes at the upper end of the shock-absorbing base 31. Four upper cylinders 34 are fixedly installed at the lower end of the shock-absorbing base 31. A rubber spring 35 is fixedly installed inside each group of upper cylinders 34. The movable end of each group of damping devices 33 is fixedly installed with a lower cylinder 36. A connecting seat 37 is fixedly installed on the outer wall of each group of lower cylinders 36. Four first concave seats 38 are fixedly installed on the outer wall of each group of connecting seats 37. A sliding block 39 is slidably installed inside each group of guide grooves 32. A second concave seat 310 is fixedly installed at the upper end of each group of sliding blocks 39. An inclined support frame 311 is rotatably installed inside the plurality of first concave seats 38. A buffer spring 314 is fixedly installed on the inner wall of each group of guide grooves 32. The lower ends of the four rubber springs 35 are respectively fixed to the inner bottom ends of the four lower cylinders 36. The other ends of the plurality of buffer springs 314 are respectively fixed to one end of the plurality of sliding blocks 39. Slide grooves 313 are opened on both side walls inside each group of guide grooves 32. A limiting block 312 is slidably installed inside each group of slide grooves 313. One end of every two groups of limiting blocks 312 is respectively fixed to both ends of a group of sliding blocks 39. The lower part of each group of inclined support frames 311 is rotatably installed inside a group of second concave seats 310.

[0033] In this embodiment, the shock-absorbing base 31 serves as the basic support structure of the pressure safety monitoring device. Its core lies in the composite shock-absorbing structure combining the rubber spring 35 and the damper 33, as well as the supporting auxiliary shock-absorbing components, ensuring the stable operation of the device in a complex vibration environment;

[0034] Inside the four reserved holes of the shock-absorbing base 31, four damping devices 33 are accurately installed. The damping device 33 adopts hydraulic damping technology and is filled with high-viscosity silicone oil inside. Its damping coefficient has been strictly calculated and tested, which can effectively dissipate high-frequency vibration energy. At the same time, upper cylinders 34 and lower cylinders 36 are respectively fixedly installed at the upper and lower ends of the four rubber springs 35. Both the upper cylinder 34 and the lower cylinder 36 are made of high-strength aluminum alloy and are formed by precision casting technology to ensure a tight combination with the rubber spring 35. The upper ends of the four upper cylinders 34 are fixedly connected to the lower end of the support plate 1 through bolts. The bolts adopt anti-loosening design to ensure the reliability of the connection; the lower ends of the four lower cylinders 36 are respectively fixed to the upper ends of the four damping devices 33 to form a stable connection structure;

[0035] When the device is vibrated, the four groups of rubber springs 35 play a role first, converting the vibration into their own elastic deformation. Utilizing the good elastic properties of the rubber material, a part of the vibration energy is absorbed. The elastic modulus of the rubber springs 35 is specially designed to effectively absorb low-frequency and large-amplitude vibrations. Subsequently, the remaining vibration energy is transmitted to the four groups of dampers 33 through the four groups of lower cylinders 36. The dampers 33 convert this energy into other forms of energy such as heat energy and dissipate it. Through the viscous resistance of the damping medium, the kinetic energy of the vibration is converted into heat energy and dissipated into the surrounding environment. This contact method ensures the effective transmission of force, realizes the collaborative suppression of vibration, significantly reduces the intensity of vibration transmitted to the device body, better plays the shock-absorbing role of the shock-absorbing base 31, and provides a solid guarantee for the stable operation of the pressure safety monitoring device in a vibrating environment;

[0036] To further improve the shock-absorbing effect, four groups of first concave seats 38 are installed on the outer walls of the four groups of connecting seats 37. The first concave seats 38 are firmly connected to the connecting seats 37 by welding. At the same time, multiple sliding blocks 39 are respectively slidably installed inside multiple guide grooves 32. The guide grooves 32 adopt high-precision machining technology to ensure the matching precision with the sliding blocks 39. Then, multiple second concave seats 310 are respectively installed on the upper ends of multiple sliding blocks 39. The second concave seats 310 and the sliding blocks 39 are connected by bolts. The upper and lower parts of multiple diagonal braces 311 are respectively rotatably installed inside multiple first concave seats 38 and multiple second concave seats 310 to form a movable connection structure;

[0037] When the connecting seat 37 moves up and down, the connecting seat 37 drives the four groups of diagonal braces 311 to move through the four groups of first concave seats 38 fixed to it. The four groups of diagonal braces 311 drive the four groups of sliding blocks 39 to move through the four groups of second concave seats 310, causing the four groups of sliding blocks 39 to move inside the guide grooves 32 that are slidably mated with them. During this process, the sliding blocks 39 will squeeze the buffer springs 314 inside the guide grooves 32. The buffer springs 314 are made of high-strength spring steel and have good elasticity and fatigue life. By the compression and extension of the buffer springs 314, the vibration energy is further absorbed, achieving a shock-absorbing effect. This structure can not only guide the connecting seat 37 and improve its stability during up and down movement, but also further improve the shock-absorbing ability of the device through a multi-stage shock-absorbing design, providing a more reliable guarantee for the stable operation of the pressure safety monitoring device in a vibrating environment;

[0038] In addition, to ensure the stability and accuracy of the sliding block 39 during movement, limit blocks 312 are installed at both ends of each group of sliding blocks 39. The limit blocks 312 are made of wear-resistant materials. Multiple groups of limit blocks 312 are respectively slidably installed inside the sliding grooves 313. The sliding grooves 313 and the limit blocks 312 are designed with precise fit. When the sliding block 39 moves, the sliding block 39 will drive the two groups of limit blocks 312 fixed to it to move, so that the two groups of limit blocks 312 slide respectively inside the sliding grooves 313 that match them. This design can limit the sliding block 39 so that it can only slide inside the guide groove 32, effectively preventing the sliding block 39 from shifting or disengaging, and at the same time greatly improving the stability of the sliding block 39 during movement, ensuring the reliable operation of the entire shock absorption system;

[0039] The rubber spring 35 needs to select nitrile rubber or fluororubber that is resistant to oil and chemical corrosion to adapt to the chemical environment; the damper 33 uses a hydraulic damper, and the damping coefficient is optimized by adjusting the viscosity of the damping fluid;

[0040] Energy recovery design: The damper 33 is selected as a magnetorheological damper, and the dissipated vibration energy is converted into electrical power ≈ 5W to supply power to the alarm 27 to achieve energy saving;

[0041] The shock absorption base 31 adopts a parallel composite structure of "rubber spring 35 + damper 33":

[0042] The rubber spring 35 absorbs low-frequency and large-amplitude vibration energy through elastic deformation, and converts mechanical vibration into elastic potential energy;

[0043] The damper 33 is connected in series below the rubber spring 35, and dissipates high-frequency vibration energy through the viscous damping effect, and converts the remaining kinetic energy into heat energy.

[0044] Force transmission path: vibration → support plate 1 → upper cylinder 34 → rubber spring 35 → lower cylinder 36 → damper 33 → shock absorption base 31 → position adjustment mechanism 4 → ground, realizing the hierarchical attenuation of vibration energy.

[0045] Example two: According to Figure 1 、 Figure 2 、 Figure 3 and Figure 8As shown in the figure, the monitoring mechanism 2 includes a protective box 20. A pressure sensor 21 is fixedly installed at the upper end of the support plate 1. One end of the pressure sensor 21 is fixedly installed with a three-way ball valve 22. The other end of the three-way ball valve 22 is fixedly installed with a filter 23. The other end of the filter 23 is fixedly installed with a corrugated pipe 24. The lower end of the corrugated pipe 24 is fixedly installed with a pressure-taking pipe 25. The upper end of the support plate 1 is successively installed with a safety control module 26, a compensation metering module 28, and a data processing integration module 29 from front to back. An alarm 27 is fixedly installed at the upper end of the support plate 1. The safety control module 26, the compensation metering module 28, and the data processing integration module 29 are all located inside the protective box 20. The lower end of the protective box 20 is fixed to the upper end of the support plate 1. The safety control module 26, the compensation metering module 28, and the data processing integration module 29 are all signal-connected to the pressure sensor 21. The compensation metering module 28 is signal-connected to the data processing integration module 29. The alarm 27 is electrically connected to the safety control module 26.

[0046] In this embodiment, the pressure monitoring and control system is integrated at the upper end of the support plate 1, and each component is closely coordinated to achieve precise monitoring, data processing, and safety control of the reactor pressure.

[0047] At the upper end of the support plate 1, the pressure sensor 21, the three-way ball valve 22, the filter 23, the safety control module 26, the alarm 27, the compensation metering module 28, and the data processing integration module 29 are orderly installed. Among them, one end of the three-way ball valve 22 is connected to the opening of the pressure sensor 21, and a high-precision sealing structure is adopted to ensure the stable transmission of the pressure medium and prevent leakage. One end of the filter 23 is connected to the other end of the three-way ball valve 22. The filter 23 is internally provided with a multi-layer filtering structure, including a coarse filter layer, a fine filter layer, and an adsorption layer, which can effectively filter impurities, particles, and harmful components in the reaction medium. Then, the corrugated pipe 24 is connected to the other end of the filter 23. The corrugated pipe 24 is made of stainless steel and has good flexibility and sealing performance. The upper end of the pressure-taking pipe 25 is fixed to the lower end of the corrugated pipe 24. By adopting the corrugated pipe 24, while allowing a certain degree of displacement and deformation, the sealing performance of the pressure-taking pipe 25 can be ensured, effectively reducing the influence of vibration on pressure measurement and ensuring the accurate acquisition of pressure signals.

[0048] To protect the safety control module 26, the compensation metering module 28, and the data processing integration module 29, a protective box 20 is installed at the upper end of the support plate 1. The protective box 20 is made of high-strength metal material and is internally provided with a shock-absorbing pad and a moisture-proof layer, which can effectively prevent the influence of external impact, vibration, and moisture on the internal modules, significantly improving the service life and reliability of these modules.

[0049] The pressure sensor 21 is made of corrosion-resistant materials, and its surface is coated with a polytetrafluoroethylene anti-corrosion layer, which can effectively resist the erosion of strong corrosive media during the imidazole synthesis reaction. The pressure sensor 21 is internally equipped with a high-precision temperature sensor, which can monitor the ambient temperature in real time, and the measurement accuracy reaches ±0.1°C, providing an accurate data basis for subsequent compensation measurement. The pressure sensor 21 is connected to the reaction kettle through a three-way ball valve 22, a filter 23, a bellows 24 and a pressure tapping pipe 25, and a three-way ball valve 22 and a filter 23 are arranged on the bellows 24. This design facilitates the installation, disassembly, calibration of the sensor and impurity filtration, greatly improving the maintenance convenience and working reliability of the equipment;

[0050] The compensation measurement module 28 is internally equipped with a multi-parameter fusion calculation chip. This chip adopts an advanced integrated circuit design and has powerful data processing capabilities. It can receive the data from the pressure sensor 21 and its internal temperature sensor, and perform real-time correction on the pressure measurement value according to the preset compensation algorithm. The compensation algorithm comprehensively considers various factors such as temperature and pressure changes, and through complex mathematical models and calculation methods, eliminates the influence of environmental factors on pressure measurement, improves measurement accuracy, and controls the pressure measurement error within ±0.5%;

[0051] The data processing integration module 29 includes an edge computing unit, a data storage module and a communication interface. The edge computing unit is equipped with a high-performance processor and is internally equipped with an intelligent data processing algorithm, which can perform real-time analysis, processing and filtering on the data transmitted by the pressure monitoring module and the compensation measurement module 28. Through advanced signal processing technology and data mining algorithms, it can quickly eliminate abnormal data and extract effective information. The data storage module uses a large-capacity solid-state drive and can store pressure data for many years to ensure the long-term preservation and traceability of the data. The communication interface supports multiple industrial communication protocols, such as OPCUA, MQTT, etc., and can be seamlessly integrated with the factory's automation control system and data management platform to achieve real-time sharing and remote monitoring of data, facilitating operators to obtain pressure data anytime and anywhere for remote management and control;

[0052] The safety control module 26 includes a multi-level alarm unit and an emergency treatment device. The multi-level alarm unit is set with different levels of pressure alarm thresholds, including a warning threshold, an alarm threshold and a danger threshold. When the pressure exceeds the preset warning threshold, the alarm 27 is first triggered to emit an audible and visual alarm signal to remind the on-site staff to pay attention; when the pressure continues to rise and exceeds the alarm threshold, the system automatically sends a text message alarm to the mobile phones of relevant management personnel to ensure timely information transmission; when the pressure reaches the dangerous value, the emergency treatment device is quickly activated, and the automatic pressure relief valve is quickly opened to relieve the pressure, effectively reducing the pressure in the reaction kettle; at the same time, the cut-off valve immediately cuts off the feed pipeline of the reaction kettle to prevent the reaction from further intensifying and avoid the expansion of the accident, providing all-round protection for production safety;

[0053] By installing a protective box 20 at the upper end of the support plate 1, with a 2-mm-thick EVA shockproof layer adhered to the inner wall of the protective box 20 and filled with dry nitrogen with a humidity of ≤20% RH inside, it can prevent the circuit board from getting damp, protect the safety control module 26, the compensation metering module 28, and the data processing integration module 29, prevent the three from suffering external impacts, and extend the service life.

[0054] The filter 23 is internally provided with a 5-μm sintered metal filter element to filter solid particles such as imidazole intermediate crystals in the reaction medium and prevent the diaphragm of the pressure sensor 21 from being blocked.

[0055] The path of pressure signal acquisition and transmission: the pressure of the reaction kettle → the pressure tapping pipe 25 → the bellows 24 → the filter 23 → the three-way ball valve 22 → the pressure sensor 21.

[0056] Anti-corrosion strengthening: The thickness of the polytetrafluoroethylene coating on the surface of the pressure sensor 21 is ≥50 μm, which is resistant to strong acid with pH ≤ 1 and strong base with pH ≥ 13 environments, and the service life is extended by 2 times compared with ordinary sensors.

[0057] The pressure sensor 21 is connected to the reaction kettle through the three-way ball valve 22, the filter 23, the bellows 24, and the pressure tapping pipe 25, and the three-way ball valve 22 and the filter 23 are arranged on the bellows 24, which is convenient for the installation, disassembly, calibration of the sensor and impurity filtration.

[0058] Example Three: According to Figure 1 、 Figure 2 and Figure 9 As shown, the position adjustment mechanism 4 includes a bottom plate 41. The lower end of the shock-absorbing base 31 is fixedly installed with a screw rod 42 and four groups of support rods 43. A hexagonal sleeve 44 is sleeved on the outer wall of the screw rod 42. Guide cylinders 45 are slidably sleeved on the outer walls of the four groups of support rods 43. The upper end of the hexagonal sleeve 44 is fixedly installed with a mating seat 46. A rotating seat 47 is rotatably installed inside the mating seat 46. A threaded seat 48 is threadedly connected to the outer wall of the screw rod 42. A support frame 49 is fixedly installed on the outer walls of the screw rod 42 and the four groups of support rods 43. The bottom plate 41 is located below the shock-absorbing base 31. The lower ends of the hexagonal sleeve 44 and the four groups of guide cylinders 45 are both fixed to the upper end of the bottom plate 41. The lower end of the threaded seat 48 is fixed to the upper end of the rotating seat 47.

[0059] In this embodiment, the height adjustment mechanism is installed at the lower end of the shock-absorbing base 31. Through a clever mechanical structure design, the height of the monitoring mechanism 2 can be flexibly adjusted to meet the requirements of different reaction kettle heights.

[0060] At the lower end of the shock-absorbing base 31, the mounting screw 42 and four groups of support rods 43 are installed. The screw 42 is made of high-strength alloy steel and undergoes a special heat treatment process to improve its strength and wear resistance. The four groups of support rods 43 also adopt high-strength materials and have good rigidity and stability. Then, the threaded seat 48 is threadedly connected to the outer wall of the screw 42, and the thread matching accuracy between the threaded seat 48 and the screw 42 reaches the high-precision standard to ensure the smoothness and stability of the rotation process. The rotating seat 47 is rotatably installed on the mating seat 46, and a high-precision bearing is provided between the rotating seat 47 and the mating seat 46 to reduce the rotation resistance and improve the rotation flexibility. Moreover, the upper end of the rotating seat 47 is fixed to the lower end of the threaded seat 48, and the mating seat 46 is fixed to the upper end of the hexagonal sleeve 44. Then, the screw 42 and the four groups of support rods 43 are respectively inserted into the interior of the hexagonal sleeve 44 and the four groups of guide cylinders 45;

[0061] By turning the threaded seat 48, it rotates threadedly on the outer wall of the screw 42. Under the cooperation of the four groups of support rods 43 and the four groups of guide cylinders 45, the screw 42 is limited. The four groups of guide cylinders 45 and the support rods 43 adopt precise cooperation to ensure that the screw 42 can only move up and down along the axial direction without radial deviation. Furthermore, it is convenient for the screw 42 to drive the shock-absorbing base 31 to move up and down, and drive the monitoring mechanism 2 to move up and down together through the protection mechanism 3 and the support plate 1, so that the height of the monitoring mechanism 2 can be adjusted. The adjustment range can be designed according to actual needs, which is convenient for adjusting the device according to the height of the reactor, greatly improving the practicability and versatility of the device, enabling it to adapt to reactors of different specifications and heights, and meeting diverse production requirements;

[0062] To further improve the stability of the screw 42 and the four groups of support rods 43 during up and down movement, a support frame 49 is fixed to the outer walls of the screw 42 and the four groups of support rods 43. The support frame 49 is designed with a triangular stable structure and is firmly connected to the screw 42 and the support rods 43 by welding or bolt connection. The triangular structure has good stability and anti-deformation ability, can effectively limit the screw 42 and the four groups of support rods 43, reduce their shaking and deformation during up and down movement, improve the stability and reliability of the entire height adjustment mechanism, ensure that the device can operate stably at different height states, and provide a stable basic support for the pressure safety monitoring work;

[0063] Self-locking function: The threaded seat 48 adopts a trapezoidal thread (pitch 5mm, thread angle 30°) to achieve mechanical self-locking after adjustment and prevent displacement caused by vibration.

[0064] Usage method and working principle of this device: First, install this device at the appropriate position of the reactor, and install a part of the pressure-taking pipe 25 inside the reactor. According to the height of the reactor, control the position adjustment mechanism 4. By turning the threaded seat 48, it rotates threadedly on the outer wall of the screw rod 42. With the cooperation of the four groups of support rods 43 and the four groups of guide cylinders 45, the screw rod 42 is limited. The four groups of guide cylinders 45 and the support rods 43 are in precise cooperation to ensure that the screw rod 42 can only move up and down axially without radial offset. Furthermore, it is convenient for the screw rod 42 to drive the shock-absorbing base 31 to move up and down, and drive the monitoring mechanism 2 to move up and down together through the protection mechanism 3 and the support plate 1, so as to adjust the height of the monitoring mechanism 2 and facilitate the adjustment of this device according to the height of the reactor;

[0065] Then, obtain the pressure medium from the reactor through the pressure-taking pipe 25, transfer it into the filter 23 through the corrugated pipe 24. After the filter 23 filters out impurities, it is transmitted to the pressure sensor 21 through the three-way ball valve 22. While allowing a certain displacement and deformation, the corrugated pipe 24 ensures the sealing of the pressure-taking pipe 25 and reduces the influence of vibration on pressure measurement. The pressure sensor 21 is made of corrosion-resistant material and coated with a polytetrafluoroethylene anti-corrosion layer, and is equipped with a built-in temperature sensor, which can accurately collect pressure and temperature data. When the pressure exceeds the warning threshold, trigger the alarm 27 to send out an audible and visual alarm; when it exceeds the alarm threshold, send a text message alarm; when it reaches the dangerous value, immediately start the emergency treatment device, the automatic pressure relief valve quickly opens to relieve pressure, and the cut-off valve cuts off the feed pipeline to prevent the accident from expanding and ensure the safety of the reactor and the surrounding environment;

[0066] Finally, when the device is vibrated, the four groups of rubber springs 35 play a role first, convert the vibration into their own elastic deformation, and utilize the good elastic characteristics of the rubber material to absorb part of the vibration energy. The elastic modulus of the rubber springs 35 is specially designed to effectively absorb low-frequency and large-amplitude vibrations. Subsequently, the remaining vibration energy is transmitted to the four groups of dampers 33 through the four groups of lower cylinders 36. The dampers 33 convert these energies into other forms of energy such as heat and dissipate them. Through the viscous resistance of the damping medium, the kinetic energy of the vibration is converted into heat and dissipated into the surrounding environment. This contact method ensures the effective transmission of force, realizes the collaborative suppression of vibration, significantly reduces the intensity of vibration transmitted to the device body, and better exerts the shock-absorbing effect of the shock-absorbing base 31, providing a solid guarantee for the stable operation of the pressure safety monitoring device in a vibrating environment.

[0067] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pressure safety monitoring device for the imidazole synthesis reaction process, comprising a support plate (1), characterized in that: A monitoring mechanism (2) is provided at the upper end of the support plate (1), a protection mechanism (3) is provided at the lower end of the support plate (1), and a position adjustment mechanism (4) is provided at the lower end of the protection mechanism (3). The protection mechanism (3) includes a shock-absorbing base (31). A plurality of guide grooves (32) are formed in the upper end of the shock-absorbing base (31). Dampers (33) are installed inside four reserved holes at the upper end of the shock-absorbing base (31). Four groups of upper cylinders (34) are fixedly installed at the lower end of the shock-absorbing base (31). A rubber spring (35) is fixedly installed inside each group of upper cylinders (34). The movable end of each group of dampers (33) is fixedly installed with a lower cylinder (36). A connecting seat (37) is fixedly installed on the outer wall of each group of lower cylinders (36). Four groups of first concave seats (38) are fixedly installed on the outer wall of each group of connecting seats (37). A sliding block (39) is slidably installed inside each group of guide grooves (32). A second concave seat (310) is fixedly installed at the upper end of each group of sliding blocks (39). An inclined support frame (311) is rotatably installed inside a plurality of first concave seats (38). A buffer spring (314) is fixedly installed on the inner wall of each group of guide grooves (32).

2. The pressure safety monitoring device for an imidazole synthesis reaction process according to claim 1, characterized in that: The lower ends of the four groups of rubber springs (35) are respectively fixed to the inner bottom ends of the four groups of lower cylinders (36). The other ends of the plurality of buffer springs (314) are respectively fixed to one ends of the plurality of sliding blocks (39).

3. The pressure safety monitoring device for an imidazole synthesis reaction process according to claim 2, wherein: Chute grooves (313) are formed in the inner side walls of both sides of each group of guide grooves (32). A limiting block (312) is slidably installed inside each group of chute grooves (313).

4. The pressure safety monitoring device for an imidazole synthesis reaction process according to claim 3, characterized in that: One ends of every two groups of limiting blocks (312) are respectively fixed to both ends of a group of sliding blocks (39). The lower part of each group of inclined support frames (311) is rotatably installed inside a group of second concave seats (310).

5. The pressure safety monitoring device for an imidazole synthesis reaction process according to claim 1, characterized in that: The monitoring mechanism (2) includes a protection box (20). A pressure sensor (21) is fixedly installed at the upper end of the support plate (1). A three-way ball valve (22) is fixedly installed at one end of the pressure sensor (21). A filter (23) is fixedly installed at the other end of the three-way ball valve (22). A corrugated pipe (24) is fixedly installed at the other end of the filter (23). A pressure-taking pipe (25) is fixedly installed at the lower end of the corrugated pipe (24). A safety control module (26), a compensation measurement module (28) and a data processing integration module (29) are successively installed at the upper end of the support plate (1) from front to back. An alarm (27) is fixedly installed at the upper end of the support plate (1).

6. The pressure safety monitoring device for an imidazole synthesis reaction process according to claim 5, characterized in that: The safety control module (26), the compensation measurement module (28) and the data processing integration module (29) are all located inside the protection box (20). The lower end of the protection box (20) is fixed to the upper end of the support plate (1).

7. The pressure safety monitoring device for an imidazole synthesis reaction process according to claim 6, characterized in that: The safety control module (26), the compensation measurement module (28) and the data processing integration module (29) are all signal-connected to the pressure sensor (21). The compensation measurement module (28) is signal-connected to the data processing integration module (29). The alarm (27) is electrically connected to the safety control module (26).

8. The pressure safety monitoring device for an imidazole synthesis reaction process according to claim 1, characterized in that: The position adjusting mechanism (4) includes a bottom plate (41). A screw rod (42) and four groups of support rods (43) are fixedly installed at the lower end of the shock-absorbing base (31). A hexagonal sleeve (44) is sleeved on the outer wall of the screw rod (42). Guide cylinders (45) are slidably sleeved on the outer walls of the four groups of support rods (43). A mating seat (46) is fixedly installed at the upper end of the hexagonal sleeve (44). A rotating seat (47) is rotatably installed inside the mating seat (46). A threaded seat (48) is threadedly connected to the outer wall of the screw rod (42).

9. The pressure safety monitoring device for an imidazole synthesis reaction process according to claim 8, characterized in that: A support frame (49) is fixedly installed on the outer walls of the screw rod (42) and the four groups of support rods (43). The bottom plate (41) is located below the shock-absorbing base (31).

10. The pressure safety monitoring device for an imidazole synthesis reaction process according to claim 9, characterized in that: The lower ends of the hexagonal sleeve (44) and the four groups of guide cylinders (45) are both fixed to the upper end of the bottom plate (41). The lower end of the threaded seat (48) is fixed to the upper end of the rotating seat (47).

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