Recovery regulating valve for tail gas at top of demethanizing tower in olefin separation device

Abstract

The utility model discloses a demethanizing tower top tail gas recovery regulating valve in an olefin separation device in the related technical field of tail gas treatment environment-friendly equipment, which comprises a box body and a valve main body, the valve main body is fixedly connected in the box body through a fixing frame, two connecting pipes are integrally formed on the valve main body, and the two connecting pipes are connected with the box body through a fixing frame. A power generation box is arranged on one connecting pipe, a turbine frame is arranged at the input end of the power generation box, the turbine frame is embedded in the connecting pipes, an adjusting ball is embedded in the valve body, and a flow guide hole is drilled in the adjusting ball. Through the design of the angle sensor, the adjusting motor, the control box, the wireless connection antenna and the wireless concentration sensor, signal lines do not need to be arranged, meanwhile, automatic control over flow is facilitated, the intelligent degree is high, and practicability is high; the air flow can be used for generating, storing and supplying power to the device, and the device is environment-friendly, energy-saving and good in economical efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field related to environmental protection equipment for tail gas treatment. Specifically, it relates to a regulating valve for recovering tail gas at the top of the demethanizer tower in an olefin separation device. Background Art

[0002] With the continuous development of economy and technology, people's material living standards have been greatly improved, and the requirements for the living environment are getting higher and higher. Especially with the proposal and promotion of the environmental protection concept, the living environment in our country has taken on a new look. Of course, in this process, the upgrading of various traditional equipment and the improvement of environmental protection technologies are the direct reasons for this change. A regulating valve, also known as a control valve, is the final control element in the field of industrial automation process control. It changes process parameters such as the flow rate, pressure, temperature, and liquid level of the medium by receiving a control signal output from a regulating control unit and relying on power operation. A gas regulating valve proposed in Patent CN202020622331.X is provided with a pointer on the pressure regulating device, which can accurately display the pressure accuracy during regulation. At the same time, the multi-way connecting pipe set effectively improves the flow control ability of the gas regulating valve, increases the reliability of the valve, has strong practicability, and has a broad market prospect, being suitable for large-scale popularization and use. Although this patent meets the usage requirements to a certain extent, it is found in actual use that although this design can solve the problem of adjustment accuracy, it cannot be automatically adjusted as needed, and its intelligence level and practicability still need to be improved.

[0003] In view of this, the present utility model is specifically proposed. Summary of the Invention

[0004] The technical problem to be solved by the present utility model is to overcome the deficiencies of the prior art and provide a regulating valve for recovering tail gas at the top of the demethanizer tower in an olefin separation device. To solve the above technical problem, the basic concept of the technical solution adopted by the present utility model is:

[0005] A regulating valve for recovering tail gas at the top of a demethanizer in an olefin separation device, comprising a box body and a valve body. The valve body is fixedly connected inside the box body through a fixing frame. Two connecting pipes are integrally formed on the valve body. A power generation box is arranged on one of the connecting pipes. A turbine frame is arranged at the input end of the power generation box and is embedded in the connecting pipe. An adjusting ball is embedded in the valve body, and a diversion hole is drilled in the adjusting ball. A sealing cover is fixedly connected to the valve body. A connecting frame is arranged at the other end of the sealing cover, and a gear box is arranged at the other end of the connecting frame. An adjusting motor is fixedly connected to one side of the gear box. An angle sensor is embedded in the gear box. Two groups of support frames are fixedly connected to the box body. A support plate is arranged on the support frames. A control box is fixedly connected to one of the support plates. A wireless connection antenna is arranged on the control box. The wireless connection antenna is connected to a wireless concentration sensor through a wireless signal. A storage battery box is fixedly connected to the other support plate. The storage battery box is connected to the power generation box through a wire. The box body plays a role in protection. The power generation box is convenient for power generation. The storage battery box is convenient for providing electric energy for the device and storing electric energy. The gear box plays a role in power transmission. The adjusting motor provides adjusting power for the device. The angle sensor is convenient for detecting the adjusting angle.

[0006] As a further scheme of the present utility model: Four fixing ears are fixedly connected to the box body. An inspection cover plate is embedded in the box body. An operation panel is arranged on the inspection cover plate. The fixing ears are convenient for fixedly installing the device. The inspection cover plate is convenient for inspecting the device.

[0007] As a further scheme of the present utility model: A heat dissipation window and a charging socket are arranged on the box body. The charging socket is connected to the storage battery box through a wire. A heat dissipation fan is arranged on one side of the heat dissipation window. The heat dissipation fan is fixedly connected to the box body. The heat dissipation fan and the heat dissipation window are convenient for dissipating heat inside the device.

[0008] As a further scheme of the present utility model: An adjusting rod is embedded in the adjusting ball. The adjusting rod is embedded in the gear box, the connecting frame and the sealing cover. The adjusting rod is convenient for power transmission. The adjusting ball is convenient for flow control.

[0009] As a further scheme of the present utility model: A driven gear is sleeved on the other end of the adjusting rod. A limit retaining ring is arranged on one side of the driven gear. The limit retaining ring is sleeved on the adjusting rod. The limit retaining ring plays a role in limit protection. The driven gear and the adjusting rod are in clearance fit.

[0010] As a further solution of the present utility model: One end of the adjusting rod is connected to the output end of the angle sensor through a coupling. Through the above design, it is convenient to detect the rotation angle of the adjusting rod.

[0011] As a further solution of the present utility model: A driving gear is sleeved on the output end of the adjusting motor, and the driving gear is meshed and connected with the driven gear. Through the above design, it is convenient for power transmission.

[0012] After adopting the above technical solution, the present utility model has the following beneficial effects compared with the prior art.

[0013] With the design of the angle sensor, the adjusting motor, the control box, the wireless connection antenna and the wireless concentration sensor, the present utility model not only eliminates the need for laying signal lines, but also facilitates the automatic control of the flow rate, with a high degree of intelligence and strong practicability.

[0014] With the design of the power generation box, the battery storage box and the eddy current rack, the present utility model can generate electricity, store and supply power to the device by using air flow, which is environmentally friendly, energy-saving and has good economy.

[0015] The following further describes in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. Description of the Drawings

[0016] The accompanying drawings, as a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model, but do not constitute an improper limitation to the present utility model. Obviously, the accompanying drawings in the following description are only some embodiments, and those of ordinary skill in the art can also obtain other drawings according to these drawings without creative efforts. In the drawings:

[0017] Figure 1 is a structural schematic diagram of the present utility model;

[0018] Figure 2 is a front view of the present utility model;

[0019] Figure 3 is a partial enlarged view of the present utility model;

[0020] Figure 4 is a top view of the present utility model;

[0021] Figure 5 is a control block diagram of the present utility model.

[0022] In the figure: 1. Box body; 2. Fixed ear; 3. Connecting pipe; 4. Control panel; 5. Maintenance cover plate; 6. Heat dissipation window; 7. Charging seat; 8. Fixed frame; 9. Valve body; 10. Adjusting ball; 11. Flow guiding hole; 12. Adjusting rod; 13. Support frame; 14. Support plate; 15. Control box; 16. Wireless connection antenna; 17. Adjusting motor; 18. Gear box; 19. Angle sensor; 20. Driven gear; 21. Connecting frame; 22. Sealing cover; 23. Energy storage box; 24. Power generation box; 25. Turbine frame; 26. Limit snap ring; 27. Coupling; 28. Driving gear; 29. Heat dissipation fan.

[0023] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Specific embodiments

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0025] As Figures 1 to 5 shown, a regulating valve for recovering tail gas at the top of a demethanizer in an olefin separation device includes a box body 1 and a valve body 9. The valve body 9 is fixedly connected in the box body 1 through a fixed frame 8. Two connecting pipes 3 are integrally formed on the valve body 9. A power generation box 24 is arranged on one connecting pipe 3. The input end of the power generation box 24 is provided with a turbine frame 25, and the turbine frame 25 is embedded in the connecting pipe 3. An adjusting ball 10 is embedded in the valve body 9, and a flow guiding hole 11 is drilled in the adjusting ball 10. A sealing cover 22 is fixedly connected to the valve body 9. The other end of the sealing cover 22 is provided with a connecting frame 21. The other end of the connecting frame 21 is provided with a gear box 18. An adjusting motor 17 is fixedly connected to one side of the gear box 18. An angle sensor 19 is embedded in the gear box 18. Two groups of support frames 13 are fixedly connected to the box body 1. A support plate 14 is arranged on the support frame 13. A control box 15 is fixedly connected to one support plate 14. A wireless connection antenna 16 is arranged on the control box 15. The wireless connection antenna 16 is connected to a wireless concentration sensor through a wireless signal. A storage battery box 23 is fixedly connected to the other support plate 14. The storage battery box 23 is connected to the power generation box 24 through a wire. The box body 1 plays a role in protection. The power generation box 24 is convenient for power generation. The storage battery box 23 is convenient for providing electric energy for the device and storing electric energy. The gear box 18 plays a role in power transmission. The adjusting motor 17 provides adjusting power for the device. The angle sensor 19 is convenient for detecting the adjusting angle.

[0026] Among them, four fixed ears 2 are fixedly connected to the box body 1, a maintenance cover plate 5 is embedded in the box body 1, a control panel 4 is arranged on the maintenance cover plate 5, the fixed ears 2 facilitate the fixed installation of the device, and the maintenance cover plate 5 facilitates the maintenance of the device.

[0027] A heat dissipation window 6 and a charging socket 7 are arranged on the box body 1. The charging socket 7 is connected to the storage battery box 23 through a wire. A heat dissipation fan 29 is arranged on one side of the heat dissipation window 6. The heat dissipation fan 29 is fixedly connected to the box body 1. The heat dissipation fan 29 and the heat dissipation window 6 facilitate the heat dissipation of the interior of the device.

[0028] An adjusting ball 10 is embedded with an adjusting rod 12. The adjusting rod 12 is embedded in the gear box 18, the connecting frame 21 and the sealing cover 22. The adjusting rod 12 facilitates power transmission, and the adjusting ball 10 facilitates flow control.

[0029] The other end of the adjusting rod 12 is sleeved with a driven gear 20. A limit snap ring 26 is arranged on one side of the driven gear 20. The limit snap ring 26 is sleeved on the adjusting rod 12. The limit snap ring 26 plays a role of limit protection, and a clearance fit is adopted between the driven gear 20 and the adjusting rod 12.

[0030] One end of the adjusting rod 12 is connected to the output end of the angle sensor 19 through a coupling 27. Through the above design, it is convenient to detect the rotation angle of the adjusting rod 12.

[0031] The output end of the adjusting motor 17 is sleeved with a driving gear 28. The driving gear 28 is meshed and connected with the driven gear 20. Through the above design, it is convenient to conduct power transmission.

[0032] The working principle of the present utility model is as follows: Before use, the device is fixedly installed through the fixing ear 2, the circuit is connected through the connecting pipe 3, and the wireless concentration sensor is installed at a suitable position. During use, the power supply of the device is started through the control panel 4, and the power supply of the wireless concentration sensor is started to begin remote wireless connection pairing. After successful pairing, it can start to be used. During the use process, due to the flow of waste gas, the turbine frame 25 starts to work, driving the power generation box 24 to generate electricity, and storing the electric energy in the storage battery box 23. The wireless concentration sensor works to monitor the concentration of the treated tail gas. If the tail gas is unqualified, the wireless concentration sensor transmits the signal to the control box 15. The control box 15 controls the regulating motor 17 to work intermittently step by step, driving the regulating ball 10 to rotate, gradually reducing the flow rate of the waste gas until the tail gas is qualified, and then the regulating motor 17 stops working. When the tail gas concentration is much lower than the set requirement of the qualified value, the regulating motor 17 works reversely step by step, driving the regulating ball 10 to rotate, gradually increasing the flow rate of the waste gas until the tail gas is just within the qualified range, thereby achieving the effect of increasing efficiency and saving energy. The structure design of the present utility model is reasonable, and it is convenient for installation and use. Through the design of the angle sensor 19, the regulating motor 17, the control box 15, the wireless connection antenna 16 and the wireless concentration sensor, not only is it unnecessary to lay signal lines, but also it is convenient to automatically control the flow rate, with a high degree of intelligence and strong practicability. Through the design of the power generation box 24, the storage battery box 23 and the eddy current frame, it is possible to generate electricity, store and supply power to the device using the air flow, which is environmentally friendly, energy-saving and has good economy.

[0033] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present utility model, can make some changes or modifications to the above-mentioned disclosed technical content to be equivalent embodiments with equivalent changes, but as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A tail gas recovery regulating valve for a demethanizer top in an olefin separation device, comprising a housing (1) and a valve body (9), characterized in that: The valve body (9) is fixedly connected to the box body (1) via a fixing frame (8); two connecting pipes (3) are integrally formed on the valve body (9); a power generation box (24) is provided on one of the connecting pipes (3); a turbine frame (25) is provided at the input end of the power generation box (24); the turbine frame (25) is embedded in the connecting pipe (3); an adjusting ball (10) is embedded in the valve body (9); a flow guide hole (11) is drilled on the adjusting ball (10); a sealing cover (22) is fixedly connected to the valve body (9); a connecting frame (21) is provided at the other end of the sealing cover (22); a gear is provided at the other end of the connecting frame (21). A gear box (18) is provided, one side of the gear box (18) is fixedly connected to an adjusting motor (17), the gear box (18) is embedded with an angle sensor (19), the box body (1) is fixedly connected to two groups of support frames (13), the support frames (13) are provided with support plates (14), one of the support plates (14) is fixedly connected to a control box (15), the control box (15) is provided with a wireless connection antenna (16), the wireless connection antenna (16) is connected to a wireless concentration sensor via a wireless signal, and the other support plate (14) is fixedly connected to a power storage box (23), the power storage box (23) is connected to the power generation box (24) via a wire.

2. The tail gas recovery regulating valve for the demethanizer top in an olefin separation device according to claim 1, characterized in that: Four fixing ears (2) are fixedly connected to the box body (1), an inspection cover plate (5) is embedded in the box body (1), and a control panel (4) is arranged on the inspection cover plate (5).

3. The tail gas recovery regulating valve at the top of the demethanizer in an olefin separation device according to claim 1, characterized in that: The box body (1) is provided with a heat dissipation window (6) and a charging seat (7), the charging seat (7) being connected to the power storage box (23) via a wire, a heat dissipation fan (29) being provided on one side of the heat dissipation window (6), and the heat dissipation fan (29) being fixedly connected to the box body (1).

4. The tail gas recovery regulating valve at the top of the demethanizer in an olefin separation device according to claim 1, characterized in that: An adjusting rod (12) is embedded in the adjusting ball (10), and the adjusting rod (12) is embedded in the gear box (18), the connecting frame (21) and the sealing cover (22).

5. The tail gas recovery regulating valve for the demethanizer top in an olefin separation device according to claim 4, characterized in that: The other end of the adjusting rod (12) is sleeved with a driven gear (20), one side of the driven gear (20) is provided with a limit clamping spring (26), and the limit clamping spring (26) is sleeved on the adjusting rod (12).

6. The tail gas recovery regulating valve at the top of the demethanizer in the olefin separation device according to claim 5, characterized in that: One end of the adjusting rod (12) is connected to the output end of the angle sensor (19) via a coupling (27).

7. The tail gas recovery regulating valve at the top of the demethanizer in the olefin separation device according to claim 5, characterized in that: The output end of the regulating motor (17) is sleeved with a driving gear (28), and the driving gear (28) is meshingly connected with the driven gear (20).

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