A polymerization inhibitor detection device with intelligent sensor

Abstract

The application discloses a polymerization inhibitor detection device with an intelligent sensor and relates to the technical field of high polymer materials.The device comprises a storage tank, a valve, an additive tank and a safety cover.The inside of the storage tank is used for storing butadiene.The valve is fixedly installed on the surface of the storage tank and is used for controlling the injection of an additive solution.The additive tank is fixedly installed on the top of the valve.The safety cover is arranged on the top of the additive tank and is provided with a circular hole on the top.The motor is fixedly installed on the top of the safety cover.The stirring rod is fixedly installed on the output end of the motor and rotationally penetrates through the bottom of the safety cover.The stirring rod is used for mixing the additive solution.The intelligent sensor is arranged to monitor the solution concentration in real time, and the polymerization inhibitor is automatically supplemented when the solution concentration is relatively large, so that the processing effect is improved.

Description

Technical Field

[0001] This invention relates to the field of polymer materials technology, specifically to a polymerization inhibitor detection device with an intelligent sensor. Background Technology

[0002] The polymerization inhibitor reaction device is a specialized piece of equipment used to inhibit the spontaneous reaction of easily polymerizable chemicals such as butadiene in storage tanks. It adds liquid polymerization inhibitors to prevent polymer formation and ensure the stability of raw materials.

[0003] Patent publication number CN207143152U relates to a polymerization inhibitor addition device, which is installed on a raw material storage tank. It includes a feeding section directly connected to the raw material storage tank, an adding section for adding volatile polymerization inhibitors, and a connecting section for connecting the adding section and the feeding section. The adding section has a storage cavity for storing volatile polymerization inhibitors located below the connecting section. This patent solves the problem that raw materials in existing polymer raw material storage tanks are prone to polymerization and damage pipelines, and has the effect of preventing polymerization and protecting pipelines.

[0004] The aforementioned patent has the effect of preventing polymerization and protecting pipelines. By setting up a storage chamber for storing volatile polymerization inhibitors, it solves the problem that raw materials in existing polymer raw material storage tanks are prone to polymerization and damage pipelines. However, in the actual addition process, since butadiene usually needs to be stored at low temperature to inhibit the self-polymerization reaction, the low temperature environment will cause the polymerization inhibitor to precipitate and crystallize, resulting in the instability of the polymerization inhibitor. At the same time, it is impossible to adjust the addition of polymerization inhibitor in real time according to the solution concentration during the processing, which has certain defects. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a polymerization inhibitor detection device with an intelligent sensor, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a polymerization inhibitor detection device with an intelligent sensor, comprising: a storage tank containing butadiene, wherein an intelligent sensor is installed inside the storage tank for detecting the concentration inside the storage tank; a valve fixedly mounted on the surface of the storage tank for controlling the injection of an additive solution; an addition tank fixedly mounted on top of the valve; a safety cover on top of the addition tank, wherein a circular hole is provided on the top of the safety cover; a motor fixedly mounted on top of the safety cover; and a stirring rod. The stirring rod is fixedly installed at the output end of the motor. The stirring rod rotates through the bottom of the safety cover. The stirring rod is used to mix the additive solution. When the motor is started, its output end drives the stirring rod to rotate, and the rotation of the stirring rod mixes the liquid polymerization inhibitor and solvent. The lifting frame slides through the bottom of the stirring rod, and a rotating ring is rotatably installed at the bottom of the lifting frame. A first spring is set between the lifting frame and the stirring rod. Two filter plates are fixedly installed on the inner wall of the lifting frame. The filter plates are used to block crystals. The rotation of the lifting frame drives the filter plates to rotate, and the filter plates block the polymerization inhibitor crystals that precipitate at low temperature.

[0007] According to the above technical solution, an insert plate is fixedly installed at the bottom of the safety cover, and a retaining plate is fixedly installed on the circumferential surface of the adding tank. Rubber sheets are fixedly installed on both sides of the inner wall of the retaining plate. The insert plate contacts the rubber sheets. When the safety cover moves, it drives the insert plate to move upward. The insert plate rubs against the deformed rubber sheets until it detaches from the inner wall of the retaining plate.

[0008] According to the above technical solution, the rotating ring at the bottom of the lifting frame contacts the inner wall of the adding tank, and the rotating ring at the bottom of the lifting frame keeps in close contact with the adding tank to prevent the rotating ring from rotating synchronously with the lifting frame. The two rubber sheets are symmetrically arranged.

[0009] According to the above technical solution, a protective device for improving sealing is provided on the circumferential surface of the addition tank, and a locking device for improving stability is provided on the protective device; the protective device includes a fixed frame, a telescopic rod, a second spring, a circular plate, and a sealing ring. The compressed second spring gradually recovers, and the recovery of the second spring pushes the telescopic rod to move upward. The fixed frame is fixedly installed on the circumferential surface of the addition tank, and the telescopic rod slides through the top of the fixed frame. The second spring is disposed between the telescopic rod and the fixed frame. The circular plate is fixedly installed on the side of the telescopic rod away from the second spring. A sealing ring is fixedly installed on the top of the circular plate. The sealing ring contacts the circumferential surface of the addition tank and contacts the bottom of the safety cover. When the operator lifts the safety cover, the pressure exerted by the safety cover on the sealing ring gradually decreases.

[0010] According to the above technical solution, a cylindrical rod is fixedly installed on the circumferential surface of the telescopic rod. The movement of the telescopic rod causes the circular plate and the cylindrical rod to move upward. A C-shaped plate is fixedly installed on the top of the fixed frame. A sliding groove is opened on the side of the fixed frame near the cylindrical rod, and the cylindrical rod contacts the sliding groove.

[0011] According to the above technical solution, a circular groove is provided on the side of the cylindrical rod away from the telescopic rod, and a friction groove is provided on the inner wall of the C-shaped plate. The circumferential surface of the cylindrical rod contacts the friction groove, and the cylindrical rod moves to fully contact the friction groove. Under the action of frictional resistance, the safety cover fits smoothly with the addition tank.

[0012] According to the above technical solution, the locking device includes a connecting frame, a sliding plate, a linkage rod, a sliding rod, a control rod, two limiting rods, and a hollow circular plate. The operator pushes the control rod towards the fixed frame, and the movement of the control rod causes the sliding rod to move synchronously. The connecting frame is fixedly installed on the surface of the fixed frame. The sliding plate is slidably installed on the inner wall of the connecting frame. The linkage rod is fixedly inserted through the top of the sliding plate, and the sliding rod slidably passes through the inner and outer walls of the connecting frame. The control rod is rotatably installed on the side of the sliding rod away from the sliding plate. The two limiting rods are fixedly installed on the circumferential surface of the control rod. The hollow circular plate is fixedly installed on the side of the connecting frame near the limiting rods. The top of the linkage rod is annular, and the inner wall of the linkage rod contacts the circumferential surface of the cylindrical rod. When the cylindrical rod moves upward, the movement of the cylindrical rod causes the linkage rod to move synchronously.

[0013] According to the above technical solution, a torsion spring is provided between the control rod and the sliding rod. The control rod rotates to stretch the torsion spring and drive the limiting rod to rotate. A rectangular groove is provided on the hollow circular plate.

[0014] This invention provides a polymerization inhibitor detection device with an intelligent sensor. It has the following advantages:

[0015] (1) The polymer inhibitor detection device with intelligent sensor moves the insert plate upward and separates it from the inner wall of the card plate. By setting a rubber sheet inside the card plate, it can ensure that the insert plate and the card plate are tightly attached and provide appropriate resistance when lifting to prevent the card plate from accidentally loosening, thereby enhancing the stability of the operation. At the same time, the filter plate blocks the polymer inhibitor crystals that precipitate due to low temperature. By setting the filter plate to intercept the polymer inhibitor crystals, it can prevent them from clogging the valve and ensure the accuracy of the additive injection amount. Then, the stirring rod is used to fully mix the polymer inhibitor and solvent to dissolve the polymer inhibitor crystals and ensure the uniformity of the additive solution. At the same time, the intelligent sensor monitors the solution concentration in real time and automatically replenishes the polymer inhibitor when the solution concentration is high, thereby improving the processing effect.

[0016] (2) The polymerization inhibitor detection device with intelligent sensor applies a continuous pushing force to the bottom of the safety cover by the sealing ring. By applying additional pushing force to the safety cover, the operator can easily remove the safety cover. As the sealing ring moves upward, the operator can clearly observe the state of the sealing ring and determine whether it needs to be replaced. At the same time, the cylindrical rod and the friction groove are in full contact, and the safety cover and the addition tank are stably fitted. Through the action of the reverse elastic force of the No. 2 spring, the sealing ring and the safety cover are kept in close contact. This not only saves the time of installing the sealing ring separately, but also effectively reduces the risk of gas leakage.

[0017] (3) The polymer inhibitor detection device with intelligent sensor has a sliding plate in place that forms a physical block on the sliding rod. The cylindrical rod moves upward synchronously through the sliding plate, which effectively prevents the sliding rod from moving forward and blocking the cylindrical rod due to misoperation, ensuring that the reset path of the cylindrical rod remains unobstructed. At the same time, the sliding rod contacts the circular groove of the cylindrical rod during movement. Through standardized operation, the operator can only successfully complete the limit of the cylindrical rod under the premise of ensuring safety, which effectively enhances the safety of operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 A schematic diagram of the tank structure is added to this invention;

[0020] Figure 3 A schematic diagram of the internal structure of the tank is added to this invention;

[0021] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0022] Figure 5 This is a schematic diagram of the position structure of the first spring of the present invention;

[0023] Figure 6 This is a schematic diagram of the card plate position structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the protective device and locking device of the present invention;

[0025] Figure 8 This is a schematic diagram of the position and structure of the cylindrical rod and the linkage rod of the present invention.

[0026] In the diagram: 1. Storage tank; 2. Valve; 3. Addition tank; 4. Safety cover; 5. Motor; 6. Stirring rod; 7. Lifting frame; 8. Spring No. 1; 9. Filter plate; 10. Insert plate; 11. Clamping plate; 12. Rubber sheet; 121. Fixing frame; 122. Telescopic rod; 123. Spring No. 2; 124. Circular plate; 125. Sealing ring; 126. Cylindrical rod; 127. C-shaped plate; 131. Connecting frame; 132. Sliding plate; 133. Linkage rod; 134. Sliding rod; 135. Control rod; 136. Limiting rod; 137. Hollow circular plate. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1 - Figure 8 One embodiment of the present invention is: a polymerization inhibitor detection device with an intelligent sensor, comprising: a storage tank 1, which stores butadiene and is equipped with an intelligent sensor inside the storage tank 1 for detecting the concentration inside the storage tank 1; a valve 2, which is fixedly installed on the surface of the storage tank 1 and is used to control the injection of an additive solution; an addition tank 3, which is fixedly installed on top of the valve 2; a safety cover 4, which is disposed on top of the addition tank 3 and has a circular hole on its top; a motor 5, which is fixedly installed on top of the safety cover 4; and a stirring rod 6. A stirring rod 6 is fixedly installed at the output end of motor 5 and rotates through the bottom of safety cover 4. The stirring rod 6 is used to mix the additive solution. A lifting frame 7 slides through the bottom of the stirring rod 6, and a rotating ring is installed at the bottom of the lifting frame 7. A first spring 8 is set between the lifting frame 7 and the stirring rod 6. Two filter plates 9 are fixedly installed on the inner wall of the lifting frame 7. The filter plates 9 are used to block crystals. By setting the filter plates 9 to intercept the inhibitor crystals, it is prevented from clogging the valve 2, ensuring the accuracy of the additive injection amount. The intelligent sensor can monitor the additive content in real time to ensure accurate dosing.

[0029] A plate 10 is fixedly installed at the bottom of the safety cover 4, and a retaining plate 11 is fixedly installed on the circumferential surface of the adding tank 3. Rubber sheets 12 are fixedly installed on both sides of the inner wall of the retaining plate 11. The plate 10 contacts the rubber sheet 12. By setting the rubber sheet 12 inside the retaining plate 11, it is ensured that the plate 10 and the retaining plate 11 fit tightly, and moderate resistance is provided when lifting to prevent the retaining plate 11 from accidentally coming loose.

[0030] The rotating ring at the bottom of the lifting frame 7 contacts the inner wall of the adding tank 3. Two rubber sheets 12 are symmetrically arranged. By symmetrically arranging the rubber sheets 12, the stability of the contact between the card plate 11 and the rubber sheets 12 is ensured, thereby improving the stability of the card plate 11.

[0031] In this embodiment, the process begins by checking if valve 2 is closed. Once confirmed closed, the liquid polymerization inhibitor and solvent are injected into the addition tank 3. Motor 5 is then started, and its output drives the stirring rod 6 to rotate. The stirring rod 6 mixes the liquid polymerization inhibitor and solvent. Simultaneously, a smart sensor detects the concentration of the mixed solution. If the concentration is too high, liquid polymerization inhibitor is automatically added to reduce the concentration. In this embodiment, the smart sensor can be a pressure sensor, which experiences greater force when the solution concentration is high. During stirring, the stirring rod 6 drives the lifting frame 7 to rotate synchronously. At this time, the compressed spring 8 applies a continuous downward force to the lifting frame 7. Pressure keeps the rotating ring at the bottom of the lifting frame 7 in close contact with the addition tank 3. The friction between the rotating ring and the inner wall of the addition tank 3 prevents the rotating ring from rotating synchronously with the lifting frame 7, thereby improving the stability of the lifting frame 7. At the same time, the rotation of the lifting frame 7 drives the filter plate 9 to rotate. The filter plate 9 allows the mixed additive solution to pass through during rotation, but blocks the inhibitor crystals that precipitate due to low temperature. The blocked crystals gradually dissolve under the action of solvent flushing and stirring, and turn back into a liquid state, eventually passing smoothly through the filter plate 9, ensuring that the solution is uniform and free of solid residue. After thorough mixing, valve 2 is opened to inject the additive solution into the storage tank 1, effectively inhibiting the spontaneous polymerization of butadiene in the storage tank 1. During the polymerization reaction, after the additive solution is injected, valve 2 must be closed promptly. A filter plate 9 is used to intercept the polymerization inhibitor crystals, preventing them from clogging valve 2 and ensuring the accuracy of the additive injection amount. Then, the stirring rod 6 is used to thoroughly mix the polymerization inhibitor and solvent, dissolving the inhibitor crystals and ensuring the homogeneity of the additive solution. After the butadiene transport is completed, the operator pulls up the safety cover 4. The movement of the safety cover 4 causes the motor 5 to move upwards synchronously. The movement of the motor 5 causes the stirring rod 6 to move upwards. As the stirring rod 6 moves upwards, the compressed spring 8 gradually returns to its original position. After the spring 8 has fully returned to its original position, the stirring rod 6 continues to move, causing the lifting frame 7 to move upwards, so that the rotating ring at its bottom contacts the additive... The inner wall of the adding tank 3 separates, relieving the contact friction between the rotating ring and the adding tank 3. At the same time, the safety cover 4 moves, causing the insert plate 10 to move upward. The insert plate 10 rubs against the deformed rubber sheet 12 until it detaches from the inner wall of the clamping plate 11. At this time, the deformed rubber sheet 12 recovers under its own elasticity. After the safety cover 4 is removed, the operator can clean or inspect the inside of the adding tank 3, the stirring rod 6, and the filter plate 9 to ensure that the mixing function is normal when used next time. By setting the rubber sheet 12 inside the clamping plate 11, it is ensured that the insert plate 10 and the clamping plate 11 fit tightly, and it can also provide moderate resistance when lifting to prevent the clamping plate 11 from accidentally loosening, thereby enhancing the stability of the operation.

[0032] Please see Figure 1 - Figure 8 In another embodiment of the present invention, based on the above embodiments, a protective device for improving sealing is provided on the circumferential surface of the addition tank 3, and a locking device for improving stability is provided on the protective device. The protective device includes a fixed frame 121, a telescopic rod 122, a second spring 123, a circular plate 124, and a sealing ring 125. The fixed frame 121 is fixedly installed on the circumferential surface of the addition tank 3. The telescopic rod 122 slides through the top of the fixed frame 121. The second spring 123 is disposed between the telescopic rod 122 and the fixed frame 121. The circular plate 124 is fixedly installed on the side of the telescopic rod 122 away from the second spring 123. The sealing ring 125 is fixedly installed on the top of the circular plate 124. The sealing ring 125 contacts the circumferential surface of the addition tank 3 and contacts the bottom of the safety cover 4. By moving the sealing ring 125 upward, the operator can clearly observe the state of the sealing ring 125 and determine whether it needs to be replaced.

[0033] A cylindrical rod 126 is fixedly installed on the circumferential surface of the telescopic rod 122, and a C-shaped plate 127 is fixedly installed on the top of the fixing frame 121. A groove is opened on the side of the fixing frame 121 near the cylindrical rod 126. The cylindrical rod 126 contacts the groove. Through the reverse elastic force of the second spring 123, the sealing ring 125 and the safety cover 4 are kept in close contact, which not only saves the time of installing the sealing ring 125 separately.

[0034] A circular groove is provided on the side of the cylindrical rod 126 away from the telescopic rod 122, and a friction groove is provided on the inner wall of the C-shaped plate 127. The circumferential surface of the cylindrical rod 126 contacts the friction groove. By increasing the frictional resistance between the cylindrical rod 126 and the C-shaped plate 127, it is ensured that the safety cover 4 can fit smoothly with the addition tank 3.

[0035] The locking device includes a connecting frame 131, a sliding plate 132, a linkage rod 133, a sliding rod 134, a control rod 135, two limit rods 136, and a hollow circular plate 137. The connecting frame 131 is fixedly installed on the surface of the fixed frame 121. The sliding plate 132 is slidably installed on the inner wall of the connecting frame 131. The linkage rod 133 is fixedly inserted through the top of the sliding plate 132. The sliding rod 134 slidably inserts through the inner and outer walls of the connecting frame 131. The control rod 135 is rotatably installed on the sliding rod 134 away from the sliding plate. On one side of plate 132, two limiting rods 136 are fixedly installed on the circumferential surface of control rod 135. Hollow circular plate 137 is fixedly installed on the side of connecting frame 131 near the limiting rods 136. The top of linkage rod 133 is shaped like a ring. The inner wall of linkage rod 133 contacts the circumferential surface of cylindrical rod 126. The cylindrical rod 126 moves upward synchronously through sliding plate 132, effectively preventing sliding rod 134 from moving forward due to misoperation and blocking cylindrical rod 126, ensuring that the reset path of cylindrical rod 126 remains unobstructed.

[0036] A torsion spring is provided between the control lever 135 and the sliding lever 134, and a rectangular groove is provided on the hollow circular plate 137. With proper operation, the operator can successfully limit the cylindrical rod 126 only under the premise of ensuring safety, which effectively enhances the safety of operation.

[0037] In this embodiment, when the operator lifts the safety cover 4, the pressure exerted by the safety cover 4 on the sealing ring 125 gradually decreases, and the compressed second spring 123 gradually returns to its original state. The return of the second spring 123 pushes the telescopic rod 122 upward. The movement of the telescopic rod 122 causes the circular plate 124 and the cylindrical rod 126 to move upward. The movement of the circular plate 124 causes the sealing ring 125 to move upward. During the movement, the sealing ring 125 applies a continuous pushing force to the bottom of the safety cover 4 until the sealing ring 125 disengages from the safety cover 4. Meanwhile, the cylindrical rod 126 moves upward and quickly separates from the friction groove, reducing the friction between the cylindrical rod 126 and the C-shaped plate 127. By applying additional pushing force to the safety cover 4, the operator can easily remove the safety cover 4. As the sealing ring 125 moves upward, the operator can clearly observe the state of the sealing ring 125 and determine whether it needs to be replaced. When the operator installs the safety cover 4, its bottom first contacts the sealing ring. The top of ring 125 contacts, causing the safety cover 4 to move and drive the sealing ring 125 downward. The movement of the sealing ring 125 drives the circular plate 124 downward, which in turn drives the telescopic rod 122 downward. The telescopic rod 122 compresses the second spring 123, and the deformed second spring 123 applies a reverse elastic force to the telescopic rod 122. This reverse elastic force is transmitted to the sealing ring 125 through the telescopic rod 122. Under the action of the elastic force, the sealing ring 125 forms a tight fit with the safety cover 4. At the same time, the movement of the telescopic rod 122 drives the cylindrical rod 126 to move synchronously. The cylindrical rod 126 moves and makes full contact with the friction groove, increasing the frictional resistance. Under the action of the frictional resistance, the safety cover 4 smoothly fits the addition tank 3. Through the action of the reverse elastic force of the second spring 123, the sealing ring 125 and the safety cover 4 maintain a tight fit, which not only saves the time of installing the sealing ring 125 separately, but also effectively reduces the risk of gas leakage.

[0038] When the cylindrical rod 126 moves upward, the movement of the cylindrical rod 126 drives the linkage rod 133 to move synchronously. The movement of the linkage rod 133 drives the sliding plate 132 to move upward to the preset position. At this time, the operator manually rotates the control rod 135. The control rod 135 rotates to stretch the torsion spring and drives the limit rod 136 to rotate. After the limit rod 136 rotates to the preset angle, the operator pushes the control rod 135 to move towards the fixed frame 121. The movement of the control rod 135 drives the sliding rod 134 to move synchronously. At this time, the sliding plate 132, which is already in place, forms a physical barrier, preventing the sliding rod 134 from moving further and effectively preventing the sliding rod 134 from moving forward due to misoperation. By moving the cylindrical rod 126 upward synchronously with the sliding plate 132, it is effectively prevented that the sliding rod 134 will move forward due to misoperation and block the cylindrical rod 126, ensuring that the reset path of the cylindrical rod 126 remains unobstructed. When resetting downwards, the cylindrical rod 126 drives the linkage rod 133 to reset downwards. The movement of the linkage rod 133 drives the sliding plate 132 to reset to its initial position. After the sliding plate 132 stops moving, the operator repeats the above operation, pushing the control rod 135 towards the fixed frame 121. The movement of the control rod 135 drives the limit rod 136 and the sliding rod 134 towards the fixed frame 121. During the movement, the limit rod 136 contacts the inner wall of the rectangular groove, while the sliding rod 134 contacts the circular groove of the cylindrical rod 126. This allows the sliding rod 134 to limit the cylindrical rod 126, ensuring that the sealing ring 125 stably fits the addition tank 3 and the safety cover 4 during transportation. Through standardized operation, the operator can only successfully limit the cylindrical rod 126 under the premise of ensuring safety, effectively enhancing the safety of the operation.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A polymerization inhibitor detection device with an intelligent sensor, characterized in that, Used to add polymerization inhibitors, including: Storage tank (1), which stores butadiene inside, and is equipped with a smart sensor inside the storage tank (1) for detecting the concentration of the solution inside the storage tank (1); Valve (2), which is fixedly installed on the surface of the storage tank (1), is used to control the injection of the additive solution; Addition tank (3), which is fixedly installed on top of valve (2); Safety cover (4), the safety cover (4) is disposed on the top of the adding tank (3), and the top of the safety cover (4) has a round hole; The motor (5) is fixedly mounted on the top of the safety cover (4); A stirring rod (6) is fixedly installed at the output end of a motor (5). The stirring rod (6) rotates through the bottom of a safety cover (4). The stirring rod (6) is used to mix an additive solution. A lifting frame (7) is slidably inserted through the bottom of the stirring rod (6), and a rotating ring is rotatably installed at the bottom of the lifting frame (7); Spring No. 1 (8) is disposed between the lifting frame (7) and the stirring rod (6); Filter plates (9), two of the filter plates (9) are fixedly installed on the inner wall of the lifting frame (7), and the filter plates (9) are used to block crystals.

2. The polymerization inhibitor detection device with an intelligent sensor according to claim 1, characterized in that: The bottom of the safety cover (4) is fixedly installed with a plug plate (10), the circumferential surface of the addition tank (3) is fixedly installed with a clamping plate (11), and rubber sheets (12) are fixedly installed on both sides of the inner wall of the clamping plate (11). The plug plate (10) is in contact with the rubber sheet (12). The circumferential surface of the addition tank (3) is provided with a protective device for improving sealing, and the protective device is provided with a locking device for improving stability.

3. The polymerization inhibitor detection device with an intelligent sensor according to claim 2, characterized in that: The rotating ring at the bottom of the lifting frame (7) contacts the inner wall of the adding tank (3), and the two rubber sheets (12) are symmetrically arranged.

4. The polymerization inhibitor detection device with an intelligent sensor according to claim 3, characterized in that: The protective device includes a fixed frame (121), a telescopic rod (122), a second spring (123), a circular plate (124), and a sealing ring (125). The fixed frame (121) is fixedly installed on the circumferential surface of the addition tank (3). The telescopic rod (122) slides through the top of the fixed frame (121). The second spring (123) is disposed between the telescopic rod (122) and the fixed frame (121). The circular plate (124) is fixedly installed on the side of the telescopic rod (122) away from the second spring (123). The sealing ring (125) is fixedly installed on the top of the circular plate (124). The sealing ring (125) contacts the circumferential surface of the addition tank (3) and contacts the bottom of the safety cover (4).

5. The polymerization inhibitor detection device with an intelligent sensor according to claim 4, characterized in that: A cylindrical rod (126) is fixedly installed on the circumferential surface of the telescopic rod (122), and a C-shaped plate (127) is fixedly installed on the top of the fixing frame (121). A sliding groove is provided on the side of the fixing frame (121) near the cylindrical rod (126), and the cylindrical rod (126) contacts the sliding groove.

6. The polymerization inhibitor detection device with an intelligent sensor according to claim 5, characterized in that: The cylindrical rod (126) has a circular groove on the side away from the telescopic rod (122), and the inner wall of the C-shaped plate (127) has a friction groove. The circumferential surface of the cylindrical rod (126) is in contact with the friction groove.

7. The polymerization inhibitor detection device with an intelligent sensor according to claim 6, characterized in that: The locking device includes a connecting frame (131), a sliding plate (132), a linkage rod (133), a sliding rod (134), a control rod (135), two limit rods (136), and a hollow circular plate (137). The connecting frame (131) is fixedly installed on the surface of the fixed frame (121). The sliding plate (132) is slidably installed on the inner wall of the connecting frame (131). The linkage rod (133) is fixedly inserted through the top of the sliding plate (132), and the sliding rod (134) is slidably inserted through the top. On the inner and outer walls of the connecting frame (131), the control rod (135) is rotatably mounted on the side of the sliding rod (134) away from the sliding plate (132), the two limiting rods (136) are fixedly mounted on the circumferential surface of the control rod (135), the hollow circular plate (137) is fixedly mounted on the side of the connecting frame (131) near the limiting rod (136), the top of the linkage rod (133) is shaped as a ring, and the inner wall of the linkage rod (133) is in contact with the circumferential surface of the cylindrical rod (126).

8. The polymerization inhibitor detection device with an intelligent sensor according to claim 7, characterized in that: A torsion spring is provided between the control rod (135) and the sliding rod (134), and a rectangular groove is provided on the hollow circular plate (137).

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