Quick steam exhaust device at top of fractionating tower

Abstract

The utility model discloses a fractionating tower top steam quick exhaust device, which relates to the technical field of fractionating towers, and comprises a steam exhaust pipe mounted at the top of a fractionating tower and used for exhausting steam, and a quick exhaust component mounted on the steam exhaust pipe and used for accelerating the steam exhaust rate in the fractionating tower; the quick exhaust assembly comprises a steam exhaust shell fixedly installed at the top of the steam exhaust pipe, an upper flange plate is arranged at the top of the steam exhaust pipe, a lower flange plate is installed at the bottom of the steam exhaust shell, the steam exhaust pipe and the steam exhaust shell are connected and fixed through the upper flange plate and the lower flange plate, and a steam exhaust fan is installed in the steam exhaust shell. The quick exhaust assembly further comprises a connecting shaft fixedly installed at the bottom end of a rotating shaft of the steam exhaust fan, a transmission shaft is rotationally installed on the side wall of the bottom end of the steam exhaust shell, an installation frame is fixedly installed on the outer wall of the steam exhaust pipe, and a rotating rod is rotationally installed on the installation frame. The utility model solves the problem of low steam discharge efficiency in the fractionating tower.

Description

Technical Field

[0001] The utility model belongs to the technical field of fractionation towers, and specifically relates to a quick exhaust device for steam at the top of a fractionation tower. Background Art

[0002] Mixture fractionation equipment is used to separate mixtures with different boiling points. It distills a mixture multiple times and uses the different boiling points of the components in the mixed liquid or liquid-solid system to evaporate the low-boiling-point component and condense it into a liquid, while the residue contains a large amount of high-boiling-point components (difficult-to-volatilize components), so as to separate the mixture into relatively pure single substances. Mixture fractionation equipment is usually a fractionation tower, for example, a plate fractionation tower separates the mixture by multiple distillations through multiple stages of plates, and a packed fractionation tower separates the mixture by passing the fluid through the packing.

[0003] The fractionation tower currently used includes a tower body, a reboiler connected to the bottom of the tower body, a condenser and a reflux tank connected to the top of the tower body, and the reboiler, condenser and reflux tank are all located outside the tower body and connected to the tower body through pipelines. The fractionation process is to allow the mixture material to enter the tower body from the middle of the tower, and to transfer mass and heat with the gas phase generated by the reboiler in the tower body. The low-boiling point component gas rises to the top of the tower, and part of the gas enters the condenser to condense into liquid and enters the tower body again. The remaining gas is discharged and collected, while the high-boiling point component liquid falls to the bottom of the tower, and part of the liquid enters the reboiler to heat and vaporize before entering the tower body again. The remaining liquid is discharged and collected, thereby realizing the process of separating substances with different boiling points in the mixture.

[0004] The existing patent (application number: CN201720311271.8) proposes a distillation tower, including a tower body, and the distillation tower also includes: a cooler and a reboiler located inside the tower body; the cooler is located at the top of the tower body; the reboiler is located at the bottom of the tower body. By arranging the cooler and the reboiler inside the tower body, the cooler and the reboiler form an integral structure with the tower body, which reduces the floor space, saves costs, and simplifies the structure of the distillation tower.

[0005] The steam exhaust structure at the top of the existing distillation tower is usually a simple exhaust pipe. Exhausting steam only through the exhaust pipe is slow. If the steam in the tower cannot be discharged in time, the steam can prevent excessive moisture from accumulating inside the equipment, thereby preventing the equipment in the tower from corrosion and damage.

[0006] In view of this, this application is hereby filed. Utility Model Content

[0007] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a quick exhaust device for steam from the top of a fractionating tower to achieve the desired purpose.

[0008] In order to solve the above technical problems, the utility model provides a quick exhaust device for steam from the top of a fractionating tower, comprising:

[0009] An exhaust pipe for steam exhaust installed on the top of the fractionation tower, wherein a quick exhaust component for accelerating the exhaust rate of steam inside the fractionation tower is installed on the exhaust pipe;

[0010] The quick exhaust assembly comprises an exhaust shell fixedly mounted on the top of the exhaust pipe, and an exhaust fan is installed inside the exhaust shell;

[0011] The quick exhaust assembly also includes a connecting shaft fixedly installed on the bottom end of the exhaust fan rotating shaft, a transmission shaft is rotatably installed on the side wall of the bottom end of the exhaust shell, a mounting frame is fixedly installed on the outer wall of the exhaust pipe, a rotating rod is rotatably installed on the mounting frame, the rotating rod, the connecting shaft and the transmission shaft are all transmitted through a gear mechanism, a gear column is fixedly installed on the outer wall of the rotating rod extending to the inside of the mounting frame, a rack meshing with the gear column is slidably installed on the side wall of the mounting frame, a knocking block is fixedly installed on the end of the rack close to the exhaust pipe, a return spring is fixedly installed on the side wall of the knocking block, and the end of the return spring away from the knocking block is fixedly connected to the inner wall of the mounting frame.

[0012] Furthermore, an upper flange is provided on the top of the exhaust pipe, a lower flange is installed on the bottom of the exhaust shell, and the exhaust pipe and the exhaust shell are connected and fixed via the upper flange and the lower flange.

[0013] Furthermore, the gear mechanism includes driven bevel gears fixedly mounted at both ends of the transmission shaft, and driving bevel gears are fixedly mounted on the bottom end of the connecting shaft and the top end of the rotating rod, and the driving bevel gear is meshingly connected with the driven bevel gear.

[0014] Furthermore, four rotating rods are arranged in a circular array, and transmission gears are fixedly installed on the outer walls of the four rotating rods. A transmission gear ring is rotatably installed on the top of the installation frame, and the transmission gear ring is meshed and connected with the transmission gear.

[0015] Furthermore, a flexible pad is fixedly installed on one side of the knocking block close to the outer wall of the exhaust pipe, and the material of the flexible pad is rubber.

[0016] Furthermore, gear teeth are arranged on the outer wall of the gear column, and the gear teeth are not completely arranged on the outer peripheral surface of the gear column, and teeth matching with the gear teeth are arranged on the side wall of the rack.

[0017] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art.

[0018] 1. In the utility model, the exhaust fan can be connected to an external power source to rotate inside the exhaust shell. When the exhaust fan rotates, the steam inside the exhaust pipe can be quickly discharged, thereby achieving the effect of accelerating the steam discharge rate inside the distillation tower.

[0019] 2. In the utility model, the rotation of the exhaust fan can drive the connecting shaft to rotate, and the connecting shaft can drive the rotating rod to rotate through the transmission cooperation of the transmission shaft, the active bevel gear and the driven bevel gear. The rotating rod will drive the tooth column installed thereon to rotate, and the tooth column drives the rack to move horizontally back and forth. When the rack moves horizontally back and forth, it drives the knocking block at one end of it to impact and collide with the outer wall of the exhaust pipe. Under the action of the impact force, the pipe wall of the exhaust pipe will vibrate, and then the water droplets condensed on the inner wall of the exhaust pipe can be shaken off, thereby reducing the resistance when the steam is discharged, and further improving the steam discharge rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0021] Figure 1 This is a front view structural schematic diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0024] Figure 4 It is a schematic diagram of the connection structure between the tooth column and the rack in the utility model.

[0025] Numbers in the figure: 1. exhaust pipe; 2. exhaust shell; 3. exhaust fan; 4. mounting frame; 5. rotating rod; 6. transmission gear; 7. transmission gear ring; 8. connecting shaft; 9. transmission shaft; 10. driving bevel gear; 11. driven bevel gear; 12. gear column; 13. rack; 14. knocking block; 15. return spring.

[0026] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figures 1 to 4 As shown, the utility model provides a device for quickly discharging steam from the top of a fractionating tower.

[0031] Specifically, by Figure 1-4 Given, including:

[0032] An exhaust pipe 1 for exhausting steam is installed on the top of the fractionation tower, and a quick exhaust component is installed on the exhaust pipe 1 for accelerating the exhaust rate of steam inside the fractionation tower;

[0033] The quick exhaust assembly includes an exhaust shell 2 fixedly installed on the top of the exhaust pipe 1, an upper flange is provided on the top of the exhaust pipe 1, a lower flange is provided on the bottom of the exhaust shell 2, the exhaust pipe 1 and the exhaust shell 2 are connected and fixed by the upper flange and the lower flange, and an exhaust fan 3 is installed inside the exhaust shell 2;

[0034] The quick exhaust assembly also includes a connecting shaft 8 fixedly installed at the bottom end of the rotating shaft of the exhaust fan 3, a transmission shaft 9 is rotatably installed on the side wall of the bottom end of the exhaust shell 2, a mounting frame 4 is fixedly installed on the outer wall of the exhaust pipe 1, and a rotating rod 5 is rotatably installed on the mounting frame 4. The rotating rod 5, the connecting shaft 8 and the transmission shaft 9 are all transmitted through a gear mechanism. The gear mechanism includes a driven bevel gear 11 fixedly installed at both ends of the transmission shaft 9, and an active bevel gear 10 is fixedly installed at the bottom end of the connecting shaft 8 and the top end of the rotating rod 5. The active bevel gear 10 is meshingly connected with the driven bevel gear 11. A tooth column 12 is fixedly installed on the outer wall of the rotating rod 5 extending to the inside of the mounting frame 4, and a rack 13 meshing with the tooth column 12 is slidably installed on the side wall of the mounting frame 4. A knocking block 14 is fixedly installed on the end of the rack 13 close to the exhaust pipe 1, and a return spring 15 is fixedly installed on the side wall of the knocking block 14. The end of the return spring 15 away from the knocking block 14 is fixedly connected to the inner wall of the mounting frame 4.

[0035] In the utility model, the exhaust fan 3 is connected to an external power source so that it can rotate inside the exhaust shell 2. When the exhaust fan 3 rotates, the steam inside the exhaust pipe 1 can be quickly discharged, thereby achieving the effect of accelerating the steam discharge rate inside the fractionation tower;

[0036] The rotation of the exhaust fan 3 can drive the connecting shaft 8 to rotate, and the connecting shaft 8 can drive the rotating rod 5 to rotate through the transmission cooperation of the transmission shaft 9, the active bevel gear 10 and the driven bevel gear 11. The rotating rod 5 will drive the tooth column 12 installed thereon to rotate, and the tooth column 12 drives the rack 13 to move back and forth horizontally. When the rack 13 moves back and forth horizontally, it drives the knocking block 14 at one end thereof to impact and collide with the outer wall of the exhaust pipe 1. Under the action of the impact force, the pipe wall of the exhaust pipe 1 will vibrate, and then the water droplets condensed on the inner wall of the exhaust pipe 1 can be shaken off, thereby reducing the resistance when the steam is discharged, and further improving the steam discharge rate.

[0037] Furthermore, as a specific implementation of the utility model, the utility model provides a device for quickly discharging steam from the top of a distillation tower.

[0038] Specifically, Figure 1 and Figure 2 It is shown that four rotating rods 5 are arranged in a circular array, and transmission gears 6 are fixedly installed on the outer walls of the four rotating rods 5. A transmission gear ring 7 is rotatably installed on the top of the installation frame 4, and the transmission gear ring 7 is meshed and connected with the transmission gear 6.

[0039] In the utility model, the rotation of one of the rotating rods 5 will drive the transmission gear 6 thereon to rotate, and the rotation of the transmission gear 6 will drive the transmission gear ring 7 to rotate on the mounting frame 4. When the transmission gear ring 7 rotates, it will drive the remaining transmission gears 6 meshing with it to rotate, thereby causing multiple rotating rods 5 to rotate synchronously, and then they can impact different positions of the outer wall of the exhaust pipe 1.

[0040] Furthermore, as another specific implementation of the utility model, the utility model provides a device for quickly discharging steam from the top of a distillation tower.

[0041] Specifically, Figure 4 It is given that a flexible pad is fixedly installed on one side of the knocking block 14 close to the outer wall of the exhaust pipe 1, and the material of the flexible pad is rubber.

[0042] In the utility model, the hard impact between the knocking block 14 and the outer wall of the exhaust pipe 1 is avoided by providing a flexible pad.

[0043] Furthermore, as a specific implementation of the utility model, the utility model provides a device for quickly discharging steam from the top of a distillation tower.

[0044] Specifically, Figure 4 It is shown that gear teeth are arranged on the outer wall of the gear column 12 , and the gear teeth are not completely arranged on the outer peripheral surface of the gear column 12 , and teeth matching with the gear teeth are arranged on the side wall of the rack 13 .

[0045] In the present invention, as the tooth column 12 rotates, the surface of the tooth column 12 without gear teeth will separate the meshing of the tooth column 12 and the rack 13. After the rack 13 is disengaged from the tooth column 12, the elastic force of the return spring 15 will push the knocking block 14 to drive the rack 13 to impact the outer wall of the exhaust pipe 1, and the exhaust pipe 1 will vibrate under the action of the impact force.

[0046] Working principle: The exhaust fan 3 is connected to an external power source to rotate inside the exhaust shell 2. When the exhaust fan 3 rotates, the steam inside the exhaust pipe 1 can be quickly discharged, thereby achieving the effect of accelerating the steam discharge rate inside the distillation tower;

[0047] The rotation of the exhaust fan 3 can drive the connecting shaft 8 to rotate, and the connecting shaft 8 can drive the rotating rod 5 to rotate through the transmission cooperation of the transmission shaft 9, the active bevel gear 10 and the driven bevel gear 11. The rotation of one of the rotating rods 5 will drive the transmission gear 6 thereon to rotate, and the rotation of the transmission gear 6 will drive the transmission gear ring 7 to rotate on the mounting frame 4. When the transmission gear ring 7 rotates, it will drive the remaining transmission gears 6 meshing with it to rotate, thereby causing multiple rotating rods 5 to rotate synchronously. The rotating rod 5 will drive the tooth column 12 installed thereon to rotate, and the tooth column 12 drives the rack 13 to move horizontally back and forth. When the rack 13 moves horizontally back and forth, it drives the knocking block 14 at one end thereof to impact and collide with the outer wall of the exhaust pipe 1. Under the action of the impact force, the pipe wall of the exhaust pipe 1 will vibrate, and then the water droplets condensed on the inner wall of the exhaust pipe 1 can be shaken off, thereby reducing the resistance during steam discharge and further increasing the steam discharge rate.

[0048] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A device for quickly discharging steam from a fractionation tower top, comprising: A steam exhaust pipe (1) installed at the top of the fractionation tower for exhausting steam, wherein the steam exhaust pipe (1) is provided with a quick exhaust component for accelerating the exhaust rate of steam inside the fractionation tower; The quick exhaust assembly comprises an exhaust shell (2) fixedly mounted on the top of the exhaust pipe (1), and an exhaust fan (3) is installed inside the exhaust shell (2); The quick exhaust assembly is characterized in that the quick exhaust assembly also includes a connecting shaft (8) fixedly mounted on the bottom end of the rotating shaft of the exhaust fan (3), a transmission shaft (9) is rotatably mounted on the side wall of the bottom end of the exhaust shell (2), a mounting frame (4) is fixedly mounted on the outer wall of the exhaust pipe (1), a rotating rod (5) is rotatably mounted on the mounting frame (4), the rotating rod (5), the connecting shaft (8) and the transmission shaft (9) are all transmitted through a gear mechanism, a tooth column (12) is fixedly mounted on the outer wall of the rotating rod (5) extending to the inside of the mounting frame (4), a rack (13) meshingly connected with the tooth column (12) is slidably mounted on the side wall of the mounting frame (4), a knocking block (14) is fixedly mounted on one end of the rack (13) close to the exhaust pipe (1), a return spring (15) is fixedly mounted on the side wall of the knocking block (14), and the end of the return spring (15) away from the knocking block (14) is fixedly connected to the inner side wall of the mounting frame (4).

2. A device for quickly discharging steam from a fractionation tower top according to claim 1, characterized in that: An upper flange is arranged on the top of the exhaust pipe (1), a lower flange is installed on the bottom of the exhaust shell (2), and the exhaust pipe (1) and the exhaust shell (2) are connected and fixed via the upper flange and the lower flange.

3. A device for quickly discharging steam from a fractionation tower top according to claim 1, characterized in that: The gear mechanism comprises driven bevel gears (11) fixedly mounted on both ends of the transmission shaft (9), and driving bevel gears (10) are fixedly mounted on the bottom end of the connecting shaft (8) and the top end of the rotating rod (5), and the driving bevel gear (10) is meshingly connected with the driven bevel gear (11).

4. A device for quickly discharging steam from a fractionation tower top according to claim 1, characterized in that: Four rotating rods (5) are arranged in a circular array, and transmission gears (6) are fixedly mounted on the outer walls of the four rotating rods (5). A transmission gear ring (7) is rotatably mounted on the top of the installation frame (4), and the transmission gear ring (7) is meshedly connected with the transmission gear (6).

5. A device for quickly discharging steam from a fractionation tower top according to claim 1, characterized in that: A flexible pad is fixedly mounted on one side of the knocking block (14) close to the outer wall of the exhaust pipe (1), and the material of the flexible pad is rubber.

6. A device for quickly discharging steam from a fractionation tower top according to claim 1, characterized in that: The outer wall of the tooth column (12) is provided with gear teeth, and the gear teeth are not completely arranged on the outer peripheral surface of the tooth column (12). The side wall of the rack (13) is provided with teeth matching the gear teeth.

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