Butterfly valve for coal gas micro-pressure regulation of coke oven ascension pipe
By designing a butterfly valve for micro-pressure regulation of gas in the coke oven riser, using a square valve plate and an arc-shaped transition block combined with an active bevel gear drive, precise regulation of the gas flow in the coke oven riser is achieved, solving the problem of insufficient control accuracy of conventional butterfly valves and ensuring the stability of the micro-positive pressure in the coke oven carbonization chamber.
Patent Information
- Application Number
- CN202422762133.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-11-13
AI Technical Summary
The opening and closing control accuracy of the flow area of the conventional butterfly valve at the gas outlet of the coke oven riser is insufficient, resulting in inaccurate gas flow regulation in the coke oven carbonization chamber, affecting the stability of the micro-positive pressure in the coke oven carbonization chamber.
A butterfly valve for micro-pressure regulation of gas in the coke oven riser was designed. It adopts a square valve plate and an arc-shaped transition block, combined with active bevel gear and driven bevel gear transmission. The flow area is precisely controlled by the indicator disk and angle scale. The valve plate rotation angle is 0-90° to ensure the accuracy of flow regulation.
The precise micro-pressure regulation of the gas flow in the coke oven riser is realized, the structure is simple, and the use is convenient, which ensures the micro-positive pressure stability of the coke oven carbonization chamber during the coking cycle.
Smart Images
Figure CN223411474U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fluid control devices, in particular to a butterfly valve for micro-pressure regulation of coal gas in a coke oven riser. Background Art
[0002] During the coking cycle of a coke oven, the gas production in the carbonization chamber of the coke oven fluctuates significantly. To ensure a slightly positive pressure in the carbonization chamber throughout the coking cycle, a butterfly valve is required to be added to the coke oven gas outlet riser for regulation and control. However, conventional butterfly valves have certain limitations in precisely controlling the opening and closing of the valve's flow area. To improve the butterfly valve's flow area control accuracy, this application specifically designs a butterfly valve for micro-pressure regulation of the coke oven riser gas, ensuring precise micro-pressure regulation under varying gas flow rates. Utility Model Content
[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a butterfly valve for micro-pressure regulation of coal gas in a coke oven riser, and the technical solution to the problem it solves is to include a valve body, which is characterized in that the inner wall of the valve body is rotatably connected to a longitudinal axis, the longitudinal axis is integrally connected to a valve plate arranged in a square shape, and transition blocks for use with the valve plate are respectively integrally arranged on both sides of the inner wall of the valve body, the front end of the longitudinal axis extends out of the valve body and is coaxially fixedly connected to a driven bevel gear, and the front end of the valve body is fixedly connected to two mounting plates arranged in an upper and lower corresponding manner, and the two mounting plates are arranged in a rectangular shape. A vertical shaft is connected for rotation therewith, and a driving bevel gear meshing with the driven bevel gear is coaxially fixedly connected to the lower end of the vertical shaft, and the transmission ratio of the driving bevel gear to the driven gear is 4:1. The mounting plate on the upper side is fixedly connected to a support rod, and the support rod is fixedly connected to an indicating disk arranged coaxially with the vertical shaft, and the indicating disk is provided with angle indicating lines ranging from 0 to 90 degrees. A pointer corresponding to the angle indicating lines is fixedly connected to the vertical shaft, and two symmetrically arranged grooves are provided at the end of the pointer, and a block lever corresponding to the grooves is arranged on the indicating disk.
[0004] Preferably, the indicator disk is provided with angle values corresponding to the angle indicating lines.
[0005] Preferably, an anti-slip dial is coaxially fixedly connected above the vertical axis.
[0006] Preferably, a thread hole is provided on the upper mounting plate, and the thread hole is threadedly connected with a top screw that abuts against the vertical axis.
[0007] Preferably, connecting flanges are integrally arranged at the upper and lower ends of the valve body.
[0008] The beneficial effects of the utility model are:
[0009] 1. When the present application is in use, the valve plate is square, and the transition block and the opposite end of the valve plate have a certain curvature, so that when the valve plate rotates, the transition block can change the flow area of the present application, thereby realizing gradual control of the flow to the flow area.
[0010] 2. The vertical axis rotation can drive the valve plate to rotate in the valve body through the cooperation of the active bevel gear and the driven bevel gear, and the rotation angle of the valve plate is 0-90°, and the angle indication scale on the indicator disk can accurately indicate the rotation angle of the valve plate, thereby accurately controlling the flow area of this application to ensure constant micro-pressure regulation under different gas flow rates in the coke oven riser. This application has a simple structure, is easy to use, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a first-perspective stereoscopic view of the present invention.
[0012] Figure 2 This is an enlarged view of area A in the first perspective stereoscopic view of the present invention.
[0013] Figure 3 This is a full-section front view of the utility model.
[0014] Figure 4 This is a three-dimensional cross-sectional view of the utility model from a second perspective.
[0015] Figure 5 It is an enlarged view of area B in the second perspective stereoscopic sectional view of the present invention.
[0016] Figure 6 It is a partial top view of the utility model.
[0017] Figure 7 It is an enlarged view of area C in the partial top view of the present invention.
[0018] Reference numerals
[0019] 1. Valve body, 2. Longitudinal axis, 3. Valve plate, 4. Transition block, 5. Driven bevel gear, 6. Mounting plate, 7. Vertical axis, 8. Driving bevel gear, 9. Support rod, 10. Indicator plate, 11. Angle indicator scale, 12. Pointer, 13. Groove, 14. Stop lever, 15. Angle value, 16. Anti-slip dial, 17. Threaded hole, 18. Top screw, 19. Connecting flange. DETAILED DESCRIPTION
[0020] The following is combined with Figure 1-7 The specific implementation methods of the present invention are further described in detail.
[0021] The technical solution provided by the first embodiment is that, when in use, the present application can be installed at the coke oven gas outlet riser via the connecting flange 19. The valve plate 3 is square, while the transition block 4 and the opposite end of the valve plate 3 have a certain curvature. Thus, when the valve plate 3 rotates, the transition block can change the flow area of the present application, thereby achieving gradual control of the flow-to-flow area. The rotation of the vertical shaft 7 can drive the valve plate 3 to rotate within the valve body 1 through the cooperation of the active bevel gear 8 and the driven bevel gear 5, and the rotation angle of the valve plate 3 is 0-90°. The angle indicator scale 11 on the indicator disk 10 can precisely indicate the rotation angle of the valve plate 3, thereby precisely controlling the flow area of the present application and ensuring constant micro-pressure regulation under different gas flow rates in the coke oven riser. The present application has a simple structure, is easy to use, and is highly practical.
[0022] Example 2, based on Example 1, under normal circumstances, the top screw 18 in the thread hole 17 tightly abuts the vertical shaft 7, thereby limiting the vertical shaft 7 from rotating unexpectedly and causing the valve plate 3 to rotate. When an external pressure gauge or flow meter indicates an abnormal reading and the flow rate needs to be adjusted through this application to maintain normal pressure in the coke oven carbonization chamber, the top screw 18 is first unscrewed to release the restriction on the vertical shaft 7, thereby facilitating rotation of the vertical shaft 7, thereby changing the angle of the valve plate 3 and causing the flow area of the valve body 1 to change. After the restriction of the top screw 18 is released, the vertical shaft 7 on the mounting plate 6 can be rotated clockwise using the protective dial. The rotation of the vertical shaft 7 rotates the driving bevel gear 8 accordingly. The rotation of the driving bevel gear 8 drives the longitudinal shaft 2 and the valve plate 3 to rotate integrally through the driven bevel gear 5, thereby changing the flow area of the valve body 1 and achieving micro-pressure regulation in the coke oven carbonization chamber. After the valve plate 3 is adjusted to the corresponding angle, the top screw 18 is tightened so that the top screw 18 abuts the vertical shaft 7, limiting further rotation of the vertical shaft 7 due to external factors.
[0023] Specifically, in the present application, the transmission ratio of the driving bevel gear 8 to the driven bevel gear 5 is 4:1, that is, the driving bevel gear 8 rotates one circle and the driven bevel gear 5 rotates a quarter of a circle, and the angle indication scale 11 on the indicator disk 10 fixedly connected to the support rod 9 ranges from 0 to 90 degrees, which just corresponds to the rotation angle of the valve plate 3, and the angle indication scale 11 is correspondingly arranged with an angle value 15 (for the convenience of drawing, the drawings in the specification are only shown in FIG. Figure 6 Only individual angle values 15 are drawn in the figure, which can intuitively express the rotation angle of the valve plate 3, thereby facilitating accurate control of the rotation angle of the valve plate 3 to ensure that the flow change through the valve body 1 can be accurately regulated.
[0024] Furthermore, under the cooperation of the stop rod 14 and the groove 13 on the pointer 12, the vertical shaft 7 will be unable to continue to rotate forward after a full clockwise rotation due to the action of the stop rod 14, and can only be reset counterclockwise, thereby limiting the valve plate 3 to only 0-90 degrees. 0The vertical axis 7 rotates forward and reverse within the range of the angle to avoid the operator being unable to correctly read the pointer 12 and the angle indication scale 11 due to continuous forward rotation of the vertical axis 7.
Claims
1. A butterfly valve for micro-pressure regulation of gas in a coke oven riser, comprising a valve body (1), characterized in that: The inner wall of the valve body (1) is rotatably connected to a longitudinal axis (2), the longitudinal axis (2) is integrally connected to a valve plate (3) arranged in a square shape, and transition blocks (4) for use with the valve plate (3) are integrally arranged on both sides of the inner wall of the valve body (1), the front end of the longitudinal axis (2) extends out of the valve body (1) and is coaxially fixedly connected to a driven bevel gear (5), the front end of the valve body (1) is fixedly connected to two mounting plates (6) arranged in an upper and lower corresponding manner, the two mounting plates (6) are rotatably connected to a vertical axis (7), and the lower end of the vertical axis (7) is coaxially fixedly connected to a driving bevel gear (8) meshing with the driven bevel gear (5). The transmission ratio of the driving bevel gear (8) and the driven gear is 4:
1. The mounting plate (6) on the upper side is fixedly connected to a support rod (9). The support rod (9) is fixedly connected to an indicator disk (10) coaxially arranged with the vertical axis (7). The indicator disk (10) is provided with an angle indicating scale (11) ranging from 0 to 90 degrees. The vertical axis (7) is fixedly connected to a pointer (12) corresponding to the angle indicating scale (11). The end of the pointer (12) is provided with two symmetrically arranged grooves (13). The indicator disk (10) is provided with a stop rod (14) corresponding to the groove (13).
2. A butterfly valve for micro-pressure regulation of gas in a coke oven riser according to claim 1, characterized in that: An angle value (15) corresponding to the angle indication scale line (11) is arranged on the indicator disk (10).
3. A butterfly valve for micro-pressure regulation of gas in a coke oven riser according to claim 1, characterized in that: An anti-slip dial (16) is coaxially fixedly connected above the vertical axis (7).
4. A butterfly valve for micro-pressure regulation of gas in a coke oven riser according to claim 1, characterized in that: A thread hole (17) is provided on the upper mounting plate (6), and a top screw (18) abutting against the vertical shaft (7) is threadedly connected to the thread hole (17).
5. The butterfly valve for micro-pressure regulation of gas in a coke oven riser according to claim 1, characterized in that: Connecting flanges (19) are integrally arranged at the upper and lower ends of the valve body (1).