A butadiene deweighting tower with a leak-proof device
By using an inert gas storage tank and piston plate system in the butadiene deweighting tower to create a positive pressure environment and detect leaks, the problem of reduced sealing performance was solved, and the equipment's sealing performance and operational safety were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN HAIHUA PETROCHEMICAL EQUIP MFG CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-26
AI Technical Summary
In the existing butadiene deweighting tower, when the sealed top cover is opened during the feeding process, outside air may enter the leak-proof feed pipe and then the deweighting chamber, resulting in a decrease in the sealing effect.
An inert gas storage tank is used to introduce inert gas into the feed cylinder to create a positive pressure environment. Leaks are detected by a piston plate and a sensor to ensure that no air enters during the feeding process. A motor is used to flip the piston plate to feed the material, and inert gas is introduced after the process is completed to ensure that no air remains.
It effectively prevents air from entering the deweighting tower, maintains the equipment's sealing performance and operational safety, and ensures that the sealing performance does not decline.
Smart Images
Figure CN224270193U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of butadiene production equipment, specifically a butadiene deweighting tower with a leak-proof device. Background Technology
[0002] Butadiene is a raw material for manufacturing synthetic rubber, synthetic resin, nylon, etc. It is mainly produced by dehydrogenation of butane and butene, or by separation from C4 fraction. It has anesthetic properties, is particularly irritating to mucous membranes, and is easily liquefied. In the process of producing butadiene, it needs to be processed by a deweighting tower.
[0003] For example, Chinese patent CN214105876U discloses a butadiene deweighting tower with an anti-leakage device, including a deweighting tower body, a heating and cooling chamber, a deweighting bin, and an anti-leakage feed pipe. The heating and cooling chamber is provided inside the deweighting tower body, and the deweighting bin is installed at the bottom inside the heating and cooling chamber. An anti-leakage feed pipe extending to the outside of the deweighting tower body is installed at the top of the deweighting bin.
[0004] The aforementioned butadiene deweighting tower with an anti-leakage device still has certain shortcomings. It moves the T-shaped plate upward by pulling the sealing top cover, and the two sets of sealing baffles can block the inside of the anti-leakage feed pipe to prevent gas leakage. When the material is pushed into the anti-leakage feed pipe, the sealing top cover closes on top of the anti-leakage feed pipe, which can improve the sealing performance of the anti-leakage feed pipe. However, when feeding is required, the sealing top cover is opened, and air will enter the inside of the anti-leakage feed pipe. After feeding is completed, although the sealing top cover is closed, air may still remain inside the anti-leakage feed pipe and enter the deweighting chamber, causing a decrease in the sealing effect. Therefore, this application proposes a butadiene deweighting tower with an anti-leakage device to solve the above problems. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a butadiene deweighting tower with an anti-leakage device, which has the advantages of preventing outside air from entering the butadiene deweighting tower and causing a decrease in sealing performance. It solves the problem that air may remain inside the anti-leakage feed cylinder 5 and enter the deweighting chamber, causing a decrease in sealing effect.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a butadiene deweighting tower with a leak-proof device, comprising a deweighting tower body and a feed cylinder connected to the center of its top, the top of the feed cylinder being threadedly connected to a cylinder cover, the feed cylinder having an leak-proof mechanism inside, the outer side of the deweighting tower body being provided with a temperature control mechanism for adjusting the internal temperature, and an inert gas storage tank being provided on the left side of the deweighting tower body.
[0007] Furthermore, a discharge pipe is connected to the bottom of the main body of the deweight removal tower, a support leg is fixed to the bottom of the main body of the deweight removal tower, a base plate is fixed to the bottom of the support leg, and the inert gas storage tank is placed on the upper surface of the base plate.
[0008] Furthermore, the temperature control mechanism includes an injection valve and a discharge valve located on the right side of the deweight removal tower body, and the inner wall of the deweight removal tower body has a cavity.
[0009] Furthermore, the injection valve is located above the drain valve, and both the injection valve and the drain valve are connected to the cavity.
[0010] Furthermore, the leak-proof mechanism includes a motor fixed to the right side of the feed cylinder, a piston plate fixed to the outside of the motor output shaft, a gas leak detection sensor fixed to the right side of the feed cylinder with its detection head extending into the inside of the feed cylinder, a one-way valve fixedly connected to the left side of the feed cylinder, a guide tube connected to the left end of the one-way valve, a vacuum connection tube connected to the right end of the feed cylinder, and an oxygen concentration sensor installed on the inner wall of the feed cylinder cavity near the cylinder cover.
[0011] Furthermore, the piston plate has a circular cross-sectional shape, and the piston plate is rotatably connected to the inner wall of the feed cylinder cavity through a sealed bearing and is in a sealed and movable fit with its inner wall.
[0012] Furthermore, the guide pipe is connected to the exhaust end of the inert gas storage tank, and a flow meter is installed on the top of the inert gas storage tank.
[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0014] This butadiene deweighting tower with a leak-proof device introduces inert gas into the feed cylinder and the buffer zone formed between the piston plates via an inert gas storage tank. A flow meter regulates the inert gas flow rate to ensure a positive pressure environment in the feed cylinder and buffer zone. A gas leak detection sensor continuously monitors for gas leaks inside the tower, and an oxygen concentration sensor monitors the oxygen concentration to ensure it remains below safety standards. The cylinder cover is then rotated open, and the material is poured into the feed cylinder, settling on the upper surface of the piston plates. The cover is then closed, and inert gas is continuously introduced to maintain a positive pressure environment in the feed cylinder and buffer zone. The motor is then started, causing the piston plates to rotate and feed the material. After feeding, inert gas is continued for a period to ensure no air remains in the feed cylinder and buffer zone. Nitrogen supply is then stopped, and the inert gas supply valve is closed. These steps effectively prevent air from entering the butadiene deweighting tower, ensuring the equipment's sealing performance and operational safety. Attached Figure Description
[0015] Figure 1This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the leak-proof mechanism of this utility model;
[0017] Figure 3 This is a top view of the leak-proof mechanism of this utility model;
[0018] Figure 4 This is a top view of the piston plate structure of this utility model after it has been flipped over;
[0019] Figure 5 This is a schematic diagram of the temperature control mechanism of this utility model.
[0020] In the diagram: 1. Main body of the deweighting tower; 2. Leakage prevention mechanism; 201. Motor; 202. Piston plate; 203. Gas leak detection sensor; 204. One-way valve; 205. Guide tube; 206. Vacuum connection tube; 3. Support leg; 4. Temperature control mechanism; 401. Liquid injection valve; 402. Liquid discharge valve; 403. Cavity; 5. Feed cylinder; 6. Cylinder cover; 7. Inert gas storage tank; 8. Discharge pipe. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figure 1 In this embodiment, a butadiene deweighting tower with a leak-proof device includes a deweighting tower body 1 and a feed cylinder 5 connected to the center of its top. The top of the feed cylinder 5 is threaded with a cylinder cover 6. The inside of the feed cylinder 5 is provided with a leak-proof mechanism 2. The outside of the deweighting tower body 1 is provided with a temperature control mechanism 4 for adjusting the internal temperature. An inert gas storage tank 7 is provided on the left side of the deweighting tower body 1.
[0023] The bottom of the deweight removal tower body 1 is connected to a discharge pipe 8, and the bottom of the deweight removal tower body 1 is fixed with a support leg 3. The bottom of the support leg 3 is fixed with a base plate, and the inert gas storage tank 7 is placed on the upper surface of the base plate.
[0024] Understandable
[0025] Please see Figures 2 to 4In this embodiment, the anti-leakage mechanism 2 includes a motor 201 fixed to the right side of the feed cylinder 5. A piston plate 202 is fixed to the outside of the output shaft of the motor 201. A buffer zone is formed in the space between the piston plates 202 inside the feed cylinder 5. A gas leak detection sensor 203 is fixed to the right side of the feed cylinder 5, and its detection head extends into the interior of the feed cylinder 5. During feeding, in order to prevent outside air from entering the interior of the de-weighting tower body 1, inert gas can be introduced into the buffer zone formed in the space between the piston plates 202 inside the feed cylinder 5 through the inert gas storage tank 7. The flow rate of inert gas is adjusted by a flow meter to ensure a positive pressure environment in the feed cylinder 5 and the buffer zone. A one-way valve 204 is fixedly connected to the left side of the feed cylinder 5, and a guide pipe 205 is connected to the left end of the one-way valve 204. A vacuum connection pipe 206 is connected to the right end of the feed cylinder 5. An oxygen concentration sensor is installed on the inner wall of the feed cylinder 5 near the cylinder cover 6. The gas leakage detection sensor 203 continuously detects whether there is a gas leak inside the main body 1 of the deweight tower, and the oxygen concentration is monitored by the oxygen concentration sensor to ensure that the oxygen concentration is lower than the safety standard.
[0026] The piston plate 202 has a circular cross-sectional shape. It is rotatably connected to the inner wall of the feed cylinder 5 via a sealed bearing and is in a sealed and movable fit with the inner wall. The guide pipe 205 is connected to the exhaust end of the inert gas storage tank 7. A flow meter is installed on the top of the inert gas storage tank 7. The cylinder cover 6 is rotated open to pour the material into the feed cylinder 5 and it stays on the upper surface of the piston plate 202. At this time, the cylinder cover 6 is closed, and inert gas is continued to be introduced to ensure that the feed cylinder 5 and the buffer zone maintain a positive pressure environment. Then, the motor 201 is started to make the piston plate 202 flip to perform the feeding operation. After the feeding is completed, inert gas is continued to be introduced for a period of time to ensure that there is no air residue in the feed cylinder 5 and the buffer zone. Nitrogen is then introduced and the inert gas supply valve is closed. The above steps can effectively prevent air from entering the interior of the butadiene deweighting tower and ensure the sealing performance and operational safety of the equipment.
[0027] It is understood that inert gas is introduced into the buffer zone formed by the space between the piston plates 202 and the feed cylinder 5 through the inert gas storage tank 7, and the flow rate of the inert gas is adjusted by the flow meter to ensure that a positive pressure environment is formed in the feed cylinder 5 and the buffer zone. The gas leakage detection sensor 203 continuously detects whether there is a gas leak inside the main body 1 of the deweighting tower, and the oxygen concentration is monitored by the oxygen concentration sensor to ensure that the oxygen concentration is below the safety standard. At this time, the cylinder cover 6 is rotated open, the material is poured into the inside of the feed cylinder 5 and stays on the upper surface of the piston plate 202. Then the cylinder cover 6 is closed, and inert gas is introduced again to ensure that a positive pressure environment is maintained in the feed cylinder 5 and the buffer zone. Then the motor 201 is started to make the piston plate 202 flip to carry out the feeding work. After the feeding is completed, inert gas is introduced for a period of time to ensure that there is no air residue in the feed cylinder 5 and the buffer zone. Nitrogen gas is stopped and the inert gas supply valve is closed. Through the above steps, air can be effectively prevented from entering the interior of the butadiene deweighting tower, ensuring the sealing performance and operational safety of the equipment.
[0028] Please see Figure 5 In this embodiment, the temperature control mechanism 4 includes an injection valve 401 and a discharge valve 402 located on the right side of the deweight tower body 1, and a cavity 403 is provided on the inner wall of the inner cavity of the deweight tower body 1.
[0029] The injection valve 401 is located above the drain valve 402, and both the injection valve 401 and the drain valve 402 are connected to the cavity 403.
[0030] It is understandable that by connecting the liquid injection valve 401 to the three-way valve and connecting it to the external hot and cold water pipes respectively, hot and cold water can be introduced in sequence to adjust the internal temperature of the main body 1 of the deweighting tower, thereby realizing the heating or cooling of the material.
[0031] All electrical components mentioned in this article are electrically connected to the main controller and power supply, and all electrical components mentioned are conventional and known devices. This application will not elaborate further. The main controller can be a conventional and known device such as a computer that performs control. The control circuit of the main controller can be implemented by a person skilled in the art through simple programming. The power supply is also common knowledge in the art. Furthermore, this utility model is mainly used to protect mechanical devices, so this utility model will not explain the control method and circuit connection in detail. At the same time, any parts of this utility model that are not described in detail are all common technologies known to those skilled in the art.
[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0033] The working principle of the above embodiments is as follows:
[0034] When using the butadiene deweighting tower equipped with an anti-leakage device, to prevent outside air from entering the tower body 1 during feeding, inert gas is introduced into the buffer zone formed between the piston plates 202 and the feed cylinder 5 through the inert gas storage tank 7. The flow rate of the inert gas is adjusted by a flow meter to ensure a positive pressure environment is formed in the feed cylinder 5 and the buffer zone. The gas leakage detection sensor 203 continuously monitors for gas leakage inside the tower body 1, and the oxygen concentration is monitored by an oxygen concentration sensor to ensure that the oxygen concentration is below the safety standard. At this time, the cylinder cover 6 is rotated open, and the material is poured into the feed cylinder 5 and remains on the upper surface of the piston plate 202. At this point, close the cylinder cover 6 and continue to introduce inert gas to ensure a positive pressure environment in the feed cylinder 5 and the buffer zone. Then, start the motor 201 to cause the piston plate 202 to flip and feed the material. After feeding is completed, continue to introduce inert gas for a period of time to ensure that there is no air residue in the feed cylinder 5 and the buffer zone. Stop introducing nitrogen and close the inert gas supply valve. The above steps can effectively prevent air from entering the interior of the butadiene deweighting tower, ensuring the sealing performance and operational safety of the equipment. By connecting the liquid injection valve 401 to the three-way valve and connecting it to the external hot and cold water pipes respectively, hot and cold water can be introduced in sequence to adjust the internal temperature of the deweighting tower body 1, thereby realizing the heating or cooling of the material.
[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A butadiene deweighting tower with an anti-leakage device, comprising a deweighting tower body (1) and a feed cylinder (5) connected to the center of its top, characterized in that: The top of the feed cylinder (5) is threaded with a cylinder cover (6), the inside of the feed cylinder (5) is provided with a leak-proof mechanism (2), the outside of the deweight tower body (1) is provided with a temperature control mechanism (4) for adjusting the internal temperature, and the left side of the deweight tower body (1) is provided with an inert gas storage tank (7).
2. The butadiene deweighting tower with an anti-leakage device according to claim 1, characterized in that: The bottom of the deweight removal tower body (1) is connected to a discharge pipe (8), the bottom of the deweight removal tower body (1) is fixed with a support leg (3), the bottom of the support leg (3) is fixed with a base plate, and the inert gas storage tank (7) is placed on the upper surface of the base plate.
3. A butadiene deweighting tower with an anti-leakage device according to claim 1, characterized in that: The temperature control mechanism (4) includes a liquid injection valve (401) and a liquid discharge valve (402) located on the right side of the deweight tower body (1), and a cavity (403) is provided on the inner wall of the inner cavity of the deweight tower body (1).
4. A butadiene deweighting tower with an anti-leakage device according to claim 3, characterized in that: The injection valve (401) is located above the drain valve (402), and both the injection valve (401) and the drain valve (402) are connected to the cavity (403).
5. A butadiene deweighting tower with an anti-leakage device according to claim 1, characterized in that: The leak-proof mechanism (2) includes a motor (201) fixed to the right side of the feed cylinder (5), a piston plate (202) fixed to the outside of the output shaft of the motor (201), a gas leak detection sensor (203) fixed to the right side of the feed cylinder (5) and its detection head extending into the inside of the feed cylinder (5), a one-way valve (204) fixedly connected to the left side of the feed cylinder (5), a guide tube (205) connected to the left end of the one-way valve (204), a vacuum connection tube (206) connected to the right end of the feed cylinder (5), and an oxygen concentration sensor installed on the inner wall of the inner cavity of the feed cylinder (5) near the cylinder cover (6).
6. A butadiene deweighting tower with an anti-leakage device according to claim 5, characterized in that: The piston plate (202) has a circular cross-sectional shape. The piston plate (202) is rotatably connected to the inner wall of the feed cylinder (5) through a sealed bearing and is in a sealed and movable fit with the inner wall.
7. A butadiene deweighting tower with an anti-leakage device according to claim 5, characterized in that: The guide pipe (205) is connected to the exhaust end of the inert gas storage tank (7), and a flow meter is installed on the top of the inert gas storage tank (7).