Reaction kettle and in-kettle detection device thereof

Abstract

The invention relates to a reaction kettle and an in-kettle detection device thereof in the technical field of chemical monitoring. The in-kettle detection device mainly comprises a main body, a control panel, a driving mechanism, a sight glass and a cooling coil which are mounted in the main body, and a scraping plate positioned on the end surface of one side of the main body. According to the invention, the cooling coil pipe is arranged in the structural body of the inner section of the kettle, and the component positioned in the inner section of the kettle is arranged in the barrel body of the cooling coil pipe, so that the influence of high temperature in the reaction kettle on the working temperature of the component is ingeniously solved, and the normal work of the component is ensured; meanwhile, water mist attached to the surface of the light-transmitting block can be condensed and liquefied due to the temperature difference between the inside and the outside of the kettle inner section and further can be effectively removed by the scraping plate, and it is guaranteed that the sight glass can obtain a clear liquid level image through the light-transmitting block and is closer to the liquid level due to the fact that the sight glass is located in the reaction kettle; accurate acquisition of information such as color and foam of reaction liquid in the kettle is improved, accurate monitoring of the reaction process is guaranteed, and production efficiency is improved while safe production is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of chemical monitoring, and in particular to a reaction kettle and a detection device in the kettle. Background Art

[0002] A reactor is a container used for physical or chemical reactions in the chemical production process. It is widely used in the chemical production process. When using a reactor for production, the raw materials are placed in the reactor, and the reaction liquid is stirred to mix evenly and react. It is very important to monitor the reaction process of the high-temperature and high-pressure mixed liquid in the reactor. On the one hand, it is to ensure safe production, and on the other hand, it is to ensure that the reaction reaches the expected reaction, and to ensure the yield and production efficiency.

[0003] In the prior art, the usual practice is to set an observation window on the reactor and monitor it manually or install a detector on the observation window to obtain image information of the reaction liquid in the reactor for data analysis and monitoring. This type of design is usually difficult to achieve accurate data analysis and monitoring because the image obtained through the viewing mirror is unclear due to water mist attached to the inner surface of the observation window and splashing reaction liquid. For example, the publication number is CN108114683A, and the publication date is June 5, 2018, which discloses a chemical reaction kettle, whose structure includes a motor, a frame, a thermometer port, a sight glass, a flange, an ear seat, a steam inlet, an inner tank, a stirring shaft, a jacket, a discharge port, a condensate outlet, a heater, a feed port, and a kettle cover. The motor is fixedly connected to the frame, the thermometer port and the sight glass are fixed on the kettle cover, the flange is fixedly mounted on the lower end of the kettle cover, the ear seat and the steam inlet are fixedly mounted on the jacket, the inner tank is fixedly mounted inside the jacket, the stirring shaft is fixedly connected to the motor, the discharge port is fixedly mounted at the bottom of the inner tank, the condensate outlet is fixedly mounted at the bottom of the jacket, and the feed port is fixedly mounted on the kettle cover.

[0004] Some applicants have made further improvements based on the usual practice, designing the observation window of the reactor to have a certain cleaning function, so as to eliminate the liquid attached to the inner surface of the observation window. For example, the publication number is CN 116916124 A, and the publication date is October 20, 2023. It discloses a new self-cleaning reactor mirror camera, including: a protective shell and a camera assembly, the camera assembly is fixed inside the protective shell, an observation window is arranged on one side of the protective shell, an LED lighting unit is arranged between the observation window and the camera assembly, and a wiring is fixed at one end of the camera assembly, and the wiring extends to the outside of the protective shell away from one end of the camera assembly. The invention uses a cleaning tube structure to remove the attachments on the surface of the observation window, which to a certain extent achieves the effect of improving the image acquisition effect, but the introduction of the cleaning liquid affects factors such as the concentration of the reaction liquid in the reactor, and is difficult to apply to most reactors.

[0005] Some applicants have also adopted a more complex optical path design to obtain the image of the reaction liquid surface in the kettle through refraction and other methods. At the same time, a heating device is provided in the optical path structure to ensure that it is difficult for water mist to be generated on the mirror surface for obtaining the image, thereby improving the image acquisition accuracy. However, this structure is relatively complex, and the image captured by the refractive optical path will cause multiple attenuation of the optical path due to multiple refractions, thereby causing technical problems such as a decrease in the amount of collected information and image distortion, and it is unable to solve the technical problem of the reaction liquid splashing and adhering to the mirror surface. For example, the publication number is CN115494685A, and the publication date is December 20, 2022. It discloses a visual monitoring device for chemical reactions, including a reactor, a stirring rod is installed inside the reactor, and a detection structure is installed on the side wall of the reactor, and the detection structure is located above the stirring blade group; a movable mirror is arranged to refract the image of the chemical raw materials reacting in the reactor and send it into a multi-spectral camera. When the chemical raw materials react, the heating device is started to increase the temperature of the fixed mirror, the movable mirror and the beveled tube, thereby reducing the temperature difference between the fixed mirror, the movable mirror and the beveled tube and the reactor, making it difficult for water vapor to condense on the surface of the fixed mirror and the movable mirror, interfering with the capture of the image by the multi-spectral camera. Summary of the invention

[0006] In view of the defects in the prior art, the object of the present invention is to provide a reaction kettle and a detection device in the kettle.

[0007] According to the present invention, a detection device in a kettle includes a main body, a control panel, a driving mechanism, a sight glass, a scraper and a cooling coil;

[0008] The main body is a cylindrical structure, and the main body includes an inner section and an outer section of the kettle connected in sequence, the end plate of the inner section of the kettle is embedded with a light-transmitting block, the wall plate of the outer section of the kettle is provided with a water inlet and a water outlet, the cooling coil is cylindrical, the cooling coil is provided with an inlet end and an outlet end, the cooling coil is installed in the cavity of the inner section of the kettle, the inlet end is sealedly connected to the water inlet, and the outlet end is sealedly connected to the water outlet;

[0009] The driving mechanism and the sight glass are located in the cylinder of the cooling coil, the sight glass is arranged adjacent to the light-transmitting block, the scraper is rotatably connected to the end plate of the inner section of the kettle, the driving mechanism is drivingly connected to the scraper, the control board is installed in the cavity of the outer section of the kettle, and the driving mechanism and the sight glass are electrically connected to the control board respectively;

[0010] The inner section of the reactor enters the reactor from the observation hole of the reactor to be assembled, and the outer section of the reactor is located outside the reactor and is tightly connected. The cavity of the cooling coil circulates cooling liquid to keep the cavity of the inner section of the reactor within a predetermined working temperature range. The driving mechanism drives the scraper to rotate to remove the liquid on the outer surface of the light-transmitting block.

[0011] In some embodiments, the mirror is a visual sensor.

[0012] In some embodiments, the viewing angle of the mirror is 0°-120°.

[0013] In some embodiments, the driving mechanism includes a steering gear and a rudder bar, and the steering gear drives the scraper to rotate via the rudder bar.

[0014] In some implementations, the scraper is made of fluororubber.

[0015] In some implementations, the light-transmitting block is made of high borosilicate tempered glass.

[0016] In some embodiments, an end plate of the inner section of the kettle is provided with an annular groove, and the end of the cooling coil is embedded in the annular groove.

[0017] In some embodiments, a terminal board is further included, wherein the terminal board is connected to the cavity of the outer section of the kettle, the terminal board separates the space between the outer section of the kettle and the inner section of the kettle, and the control board is electrically connected to the driving mechanism and the sight glass respectively through the terminal board.

[0018] The present invention also provides a reaction kettle, which is formed by using the in-kettle detection device.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention cleverly solves the problem of the influence of high temperature in the reactor on the working temperature of components by placing the cooling coil in the structure of the inner section of the reactor and placing the components located in the inner section of the reactor in the cylinder of the cooling coil, thereby ensuring the normal operation of the components. At the same time, the temperature difference between the inside and outside of the inner section of the reactor enables the water mist attached to the surface of the light-transmitting block to be condensed and liquefied, and then can be effectively removed by the scraper, ensuring that the sight glass can obtain a clear liquid surface image through the light-transmitting block. Since the sight glass is located in the reactor and is closer to the liquid surface, the accurate collection of information such as the color and foam of the reaction liquid in the reactor is improved, ensuring accurate monitoring of the reaction process, ensuring safe production and improving production efficiency.

[0021] 2. The present invention provides a wiring board in the cavity of the outer section of the main body, and the wiring board separates the space between the outer section and the inner section of the kettle, thereby improving the explosion-proof performance of the detection device by reducing the space and effectively improving the regularity of the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 It is a schematic cross-sectional structure diagram of the in-kettle detection device of the present invention;

[0024] Figure 2 It is a schematic diagram of the stereoscopic structure of the in-kettle detection device of the present invention from the front and side views;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the in-vessel detection device of the present invention from the rear view to the side view;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the in-kettle detection device of the present invention without the in-kettle section;

[0027] Figure 5 It is a schematic diagram of the arrangement structure of components in the main body of the in-kettle detection device of the present invention, excluding the cooling coil. DETAILED DESCRIPTION

[0028] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0029] Example 1

[0030] This embodiment provides a detection device in a reactor, such as Figure 1-5 The main components shown in the figure include a main body 100 , a control panel 200 , a driving mechanism 300 , a sight glass 400 , a cooling coil 600 installed in the main body 100 , and a scraper 500 located on one end surface of the main body 100 .

[0031] The main body 100 is a cylindrical structure with a cavity. The main body 100 is divided into an inner section 110 and an outer section 120 according to the positional relationship between the inner and outer sections after being connected to the reactor. In this embodiment, the inner section 110 and the outer section 120 are fastened together by internal and external threads. The outer section 120 is provided with a flange near the end connected to the inner section 110. The flange is used to be fastened and connected to the corresponding structure of the reactor, so that the main body 100 is firmly sealed and connected to the reactor. The main body 100 connected to the reactor has the inner section 110 located inside the reactor and the outer section 120 located outside the main body of the reactor. A light-transmitting block 111 is embedded on the end plate of the inner section 110 of the reactor, and the light-transmitting block 111 is basically located in the middle of the end plate of the inner section 110 of the reactor. The scraper 500 is rotatably connected to the end plate of the inner section 110 of the reactor through the rotating block at its end, and the rotation range of the scraper 500 covers the surface of the light-transmitting block 111. In this embodiment, the position where the scraper 500 is rotatably connected is located above the light-transmitting block 111 , so as to facilitate the dripping of the liquid brushed off the surface of the light-transmitting block 111 .

[0032] The control panel 200 is installed in the cavity of the outer section 120 of the kettle, and the control panel 200 is fixed in the cavity of the outer section 120 of the kettle in an upright state by fixing screws and corresponding structures in the cavity. The driving mechanism 300 mainly includes a steering gear 310 and a tiller 320. The steering gear 310 is fixedly connected to the inner section 110 of the kettle, and the steering gear 310 is electrically connected to the control panel 200 through wires, and the action of the steering gear 310 is controlled by the control panel 200. One end of the tiller 320 is rotatably connected to the output shaft of the steering gear 310, and the other end is connected to the rotating block of the scraper 500. The steering gear 310 drives the tiller 320 to rotate so that the scraper 500 rotates, so as to clean the liquid on the surface of the light-transmitting block 111. The sight glass 400 is a visual sensor, and the sight glass 400 is installed in the inner section 110 of the kettle. In this embodiment, the sight glass 400 is located in front of the steering gear 310, that is, the sight glass 400 is located between the steering gear 310 and the light-transmitting block 111. The camera lens of the sight glass 400 is arranged adjacent to the light-transmitting block 111, and the size of the gap between the two is adjusted mainly based on whether the entire image of the liquid surface in the reactor can be obtained to the greatest extent. For example, since the light-transmitting block 111 is located near the top of the reactor and has a predetermined distance from the liquid surface below, the sight glass 400 can collect the image information of the entire liquid surface in the reactor when the detection angle obtained by the light-transmitting block 111 is about 90°. The sight glass 400 is electrically connected to the control board 200 through wires, and the sight glass 400 transmits the collected image information of the screen in the reactor to the control board 200.

[0033] The cooling coil 600 is a cylindrical structure formed by winding a metal tube, which is hollow in the middle and has no cover at both ends. There are open branch pipe ends on opposite sides of one end of the cooling coil 600, and the two branch pipe ends are respectively recorded as the inlet end 610 and the outlet end 620. The cooling coil 600 is installed in the inner section 110 of the kettle in a coaxial manner with the inner section 110 of the kettle. After installation, the cooling coil 600 covers the driving mechanism 300 and the sight glass 400, that is, the steering gear 310, the rudder bar 320 and the sight glass 400 are located in the hollow cylinder of the cooling coil 600. A water inlet hole 121 and a water outlet hole 122 are provided on the wall plate of the outer section 120 of the kettle, and the inlet end 610 is sealedly connected to the water inlet hole 121, and the outlet end 620 is sealedly connected to the water outlet hole 122. The external coolant enters from the water inlet hole 121, enters the tube body of the cooling coil 600 through the inlet end 610, and then flows out through the outlet end 620 and the water outlet hole 122 in sequence, completing the circulation of the coolant in the cooling coil 600. In this embodiment, the positions of the water inlet hole 121 and the water outlet hole 122 are respectively located on the flange of the outer section 120 of the kettle. Since the flange is close to the position of the inner section 110 of the kettle, the circulation speed of the coolant can be increased. In some embodiments, the end plate of the inner section 110 of the kettle is provided with an annular groove 112, and the end of the cooling coil 600 is embedded in the annular groove 112. This structure can not only improve the stability of the cooling coil 600, but also achieve heat absorption through direct contact with the end plate of the inner section 110 of the kettle, which can further improve the cooling effect of the light-transmitting block 111 embedded in the end plate of the inner section 110 of the kettle, and increase the condensation rate of water mist attached to its surface.

[0034] The working principle of the present invention is as follows: the main body 100 is sealed and connected to the reactor through the flange of the outer section 120 close to the inner section 110, and the inner section 110 is located in the cavity of the reactor. The external coolant is connected to the water inlet 121, and the water outlet 122 is connected to the external coolant recovery device. When the sight glass 400 collects the image data of the liquid surface in the reactor in real time, the cooling liquid is circulated into the cooling coil 600 so that the cavity temperature of the reactor section 110 is significantly lower than the temperature in the reactor, thereby ensuring the normal operation of the driving mechanism 300 and the sight glass 400. At the same time, a temperature difference is formed between the cavity temperature of the reactor section 110 and the temperature in the reactor of the reactor, and the water mist attached to the surface of the light-transmitting block 111 condenses into liquid. The control board 200 sends a command to the steering gear 310, which drives the rudder bar 320 through the steering gear 310 to drive the scraper 600 to rotate, and the condensed liquid on the surface of the light-transmitting block 111 and the liquid splashed when the reaction liquid is stirred in the reactor are removed, thereby ensuring the accuracy of the image information of the reaction liquid in the reactor obtained by the sight glass 400. The present invention cleverly solves the problem of the influence of high temperature in the reactor on the working temperature of components by placing the cooling coil in the structure of the inner section of the reactor and placing the components located in the inner section of the reactor in the cylinder of the cooling coil, thereby ensuring the normal operation of the components. At the same time, there is a temperature difference between the inside and outside of the inner section of the reactor, so that the water mist attached to the surface of the light-transmitting block can be condensed and liquefied, and then can be effectively removed by the scraper, ensuring that the sight glass can obtain a clear liquid surface image through the light-transmitting block. Since the sight glass is located in the reactor and is closer to the liquid surface, the accurate collection of information such as the color and foam of the reaction liquid in the reactor is improved, ensuring accurate monitoring of the reaction process, ensuring safe production and improving production efficiency.

[0035] Example 2

[0036] This embodiment 2 is formed on the basis of embodiment 1, by setting a wiring board in the cavity of the outer section of the main body, and the wiring board separates the space between the outer section and the inner section of the kettle, thereby improving the explosion-proof performance of the detection device by reducing the space, and effectively improving the regularity of the circuit. Specifically:

[0037] A wiring board 700 is installed in the cavity of the outer section 120 of the kettle. The wiring board 700 is installed in the cavity of the outer section 120 of the kettle in an upright manner, and the wiring board 700 separates the space connecting the outer section 120 and the inner section 110 of the kettle into two independent spaces. The wires of the servo 310 and the sight glass 400 are connected to the wiring board 700, and the control board 200 is connected to the wiring board 700 through the wires, that is, the servo 310 and the sight glass 400 are electrically connected to the control board 200 through the wiring board 700. The use of the wiring board 700 not only shortens the line, which is conducive to the regularity of the line, but also divides the space in the main body 100, effectively improves the explosion-proof level by reducing the space, and improves the safety factor of the device.

[0038] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0039] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A detection device in a kettle, characterized in that: It comprises a main body (100), a control panel (200), a driving mechanism (300), a sight glass (400), a scraper (500) and a cooling coil (600); The main body (100) is a cylindrical structure, and the main body (100) comprises an inner section (110) and an outer section (120) connected in sequence, the end plate of the inner section (110) is embedded with a light-transmitting block (111), and the wall plate of the outer section (120) is provided with a water inlet (121) and a water outlet (122); the cooling coil (600) is cylindrical, and the cooling coil (600) is provided with an inlet end (610) and an outlet end (620); the cooling coil (600) is installed in the mold cavity of the inner section (110), the inlet end (610) is sealedly connected to the water inlet (121), and the outlet end (620) is sealedly connected to the water outlet (122); The driving mechanism (300) and the sight glass (400) are located in the cylinder of the cooling coil (600), the sight glass (400) and the light-transmitting block (111) are arranged adjacent to each other, the scraper (500) is rotatably connected to the end plate of the inner section (110) of the kettle, the driving mechanism (300) drives and connects the scraper (500), the control board (200) is installed in the cavity of the outer section (120) of the kettle, and the driving mechanism (300) and the sight glass (400) are electrically connected to the control board (200) respectively; The inner section (110) of the reactor to be assembled enters the reactor through the observation hole of the reactor, the outer section (120) of the reactor is located outside the reactor and is tightly connected, the cavity of the cooling coil (600) circulates cooling liquid to keep the cavity of the inner section (110) of the reactor within a predetermined working temperature range, and the driving mechanism (300) drives the scraper (500) to rotate to remove the liquid located on the outer surface of the light-transmitting block (111).

2. The in-vessel detection device according to claim 1, characterized in that: The viewing mirror (400) is a visual sensor.

3. The in-vessel detection device according to claim 2, characterized in that: The observation angle of the viewing mirror (400) is 0°-120°.

4. The in-vessel detection device according to claim 1, characterized in that: The driving mechanism (300) comprises a steering engine (310) and a tiller (320), and the steering engine (310) drives the scraper (500) to rotate via the tiller (320).

5. The in-vessel detection device according to claim 1, characterized in that: The scraper (500) is made of fluororubber.

6. The in-vessel detection device according to claim 1, characterized in that: The material of the light-transmitting block (111) is high borosilicate tempered glass.

7. The in-kettle detection device according to any one of claims 1 to 6, characterized in that: The end plate of the kettle inner section (110) is provided with an annular groove (112), and the end of the cooling coil (600) is embedded in the annular groove (112).

8. The in-vessel detection device according to claim 7, characterized in that: The invention also comprises a wiring board (700), wherein the wiring board (700) is connected to the cavity of the outer section (120) of the kettle, and the wiring board (700) separates the space between the outer section (120) of the kettle and the inner section (110) of the kettle, and the control board (200) is electrically connected to the driving mechanism (300) and the sight glass (400) respectively through the wiring board (700).

9. A reaction kettle, characterized in that: The in-kettle detection device is formed by any one of claims 1 to 8.

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