Valve control device for stable operation of refining air separation plant

Abstract

The utility model relates to the technical field of valve control, and discloses a refining air separation plant stable operation valve control device which comprises a valve body, a valve cavity is formed in the valve body, the interior of the valve cavity is rotationally connected with a valve ball through an accurate adjusting mechanism, a liquid through hole is formed in the valve ball, and a valve rod is arranged in the valve cavity. A control box is installed on the top of the valve body, limiting plates are movably connected to the two sides of the top of the control box through limiting clamping mechanisms correspondingly, and the control box, a first adjusting disc, a second adjusting disc, a first rotating shaft, a second rotating shaft, a first gear, a second gear and a valve ball are arranged; according to the device, the rotating angle of the valve ball in the valve cavity can be rapidly and finely adjusted through the accurate adjusting mechanism, so that an operator can rapidly and accurately control the flow flowing in the valve cavity, and then the flow control and adjusting efficiency of the device is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve control, in particular to a valve control device for stable operation of a refining air separation device. Background Art

[0002] Air separation equipment is a device that uses air as raw material, converts the air into liquid through compression cycle deep freezing, and then gradually separates and produces inert gases such as oxygen, nitrogen and argon from the liquid air through distillation. During operation, the air separation equipment needs to accurately control the flow rate through valve control devices.

[0003] For example, the Chinese patent with patent application number 201922496085.8 is a valve control device, which drives the rotating shaft by controlling the driving device, thereby driving the valve stem to achieve precise control. The electric driving device is used as a high-precision transmission device to reduce the volume of the valve control device and reduce the number of components. Therefore, the valve control device provided by the utility model can achieve precise control when controlling the rotation of the valve stem, and reduces the volume of the control device, optimizes the number of components, and has certain economic benefits.

[0004] However, the above patent is not easy to accurately adjust the flow rate, resulting in a lot of time spent on repeated adjustments when precise control of the flow rate is required. After adjustment, the flow control is often unstable due to the looseness of the adjustment disk, which seriously affects the flow control effect of the valve control device. Utility Model Content

[0005] The utility model aims to provide a valve control device for stable operation of a refinery air separation device, which solves the problems raised in the background technology.

[0006] An embodiment of the present application provides a valve control device for stable operation of a refining air separation equipment, including a valve body, a valve cavity is provided inside the valve body, a valve ball is rotatably connected to the inside of the valve cavity through a precise adjustment mechanism, a liquid hole is provided inside the valve ball, a control box is installed on the top of the valve body, and both sides of the top of the control box are movably connected to limit plates through a limit clamping mechanism.

[0007] By adopting the above technical solution, the device can control the flow rate inside the valve cavity through the valve ball and the liquid through hole, thereby greatly facilitating the operator to control the flow rate of the device.

[0008] Optionally, the precise adjustment mechanism includes a first adjustment disk and a second adjustment disk installed on the top of the control box, the first adjustment disk and the second adjustment disk are respectively fixedly connected with a first rotating shaft and a second rotating shaft inside, the bottom of the second rotating shaft extends into the interior of the valve cavity and is fixedly connected to the valve ball, the outer surfaces of the first rotating shaft and the second rotating shaft are respectively fixedly connected with a first gear and a second gear, and the first gear is meshingly connected with the second gear.

[0009] By adopting the above technical solution, the device can quickly fine-tune the rotation angle of the valve ball inside the valve cavity through the precise adjustment mechanism, so that the operator can quickly and accurately control the flow rate flowing inside the valve cavity, thereby greatly improving the flow control adjustment efficiency of the device.

[0010] Optionally, the limit clamping mechanism includes a fixed plate installed on both sides of the top of the control box, a bidirectional motor is fixedly connected to the inside of the fixed plate, both side output ends of the bidirectional motor are fixedly connected to a screw rod, the outer surface of the screw rod is movably connected to a screw nut, one side of the screw nut is fixedly connected to a connecting rod, the other end of the connecting rod extends to the outside of the fixed plate through a slide groove and is fixedly connected to the limit plate.

[0011] By adopting the above technical solution, the device can quickly limit and fix the first adjustment disk and the second adjustment disk through the limit clamping mechanism after the adjustment is completed, thereby effectively avoiding unstable flow control due to loosening of the adjustment disk, thereby greatly improving the flow control effect of the valve control device.

[0012] Optionally, an anti-slip sleeve is fixedly connected to the inner wall of the limiting plate, and an outer surface of the anti-slip sleeve is provided with anti-slip grooves.

[0013] By adopting the above technical solution, the anti-slip grooves can be used to increase the friction resistance, thereby achieving a better clamping effect.

[0014] Optionally, the inner diameter of the first gear is greater than the inner diameter of the second gear.

[0015] By adopting the above technical solution, since the inner diameter of the second gear is much smaller than the inner diameter of the first gear, the rotation rate of the valve ball is relatively low at this time, so that the operator can quickly and accurately control the flow rate flowing inside the valve cavity.

[0016] Optionally, a controller is fixedly connected to one side of the control box, and a control switch is fixedly connected to the outer surface of the controller.

[0017] By adopting the above technical solution, operators can more conveniently control the electrical appliances inside the device.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0019] 1. The technical solution of the present application, by setting a control box, a first adjusting disk, a second adjusting disk, a first rotating shaft, a second rotating shaft, a first gear, a second gear and a valve ball, enables the device to quickly fine-tune the rotation angle of the valve ball inside the valve chamber through a precise adjustment mechanism, so that the operator can quickly and accurately control the flow rate flowing inside the valve chamber, thereby greatly improving the flow control adjustment efficiency of the device.

[0020] 2. The technical solution of the present application is to set a fixed plate, a bidirectional motor, a screw, a screw nut, a connecting rod, a slide groove and a limit plate, so that after the adjustment is completed, the device can quickly limit and fix the first adjusting disk and the second adjusting disk through the limit clamping mechanism, thereby effectively avoiding unstable flow control due to loosening of the adjusting disk, thereby greatly improving the flow control effect of the valve control device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0022] Figure 1 This is a schematic diagram of the overall internal structure of a valve control device for stable operation of a refining air separation device according to the utility model;

[0023] Figure 2 It is a top view of a control box of a valve control device for stable operation of a refinery air separation equipment according to the utility model;

[0024] Figure 3 The utility model is a schematic diagram of the internal structure of a fixed plate in a valve control device for stable operation of a refining air separation device.

[0025] In the figure: 1. valve body; 2. valve chamber; 3. valve ball; 4. liquid hole; 5. control box; 6. first adjusting disk; 7. second adjusting disk; 8. first rotating shaft; 9. second rotating shaft; 10. first gear; 11. second gear; 12. fixing plate; 13. bidirectional motor; 14. lead screw; 15. lead screw nut; 16. connecting rod; 17. slide groove; 18. limit plate; 19. limit sleeve; 20. controller. DETAILED DESCRIPTION

[0026] See also Figure 1-3The utility model provides a technical solution: a valve control device for stable operation of a refining air separation device, comprising a valve body 1, a valve cavity 2 is provided inside the valve body 1, a valve ball 3 is rotatably connected to the inside of the valve cavity 2 through a precise adjustment mechanism, a liquid hole 4 is provided inside the valve ball 3, a control box 5 is installed on the top of the valve body 1, and both sides of the top of the control box 5 are movably connected to limit plates 18 through limit clamping mechanisms.

[0027] By adopting the above technical solution, the device can control the flow rate inside the valve cavity 2 through the valve ball 3 and the liquid hole 4, thereby greatly facilitating the operator to control the flow rate of the device.

[0028] In the implementation mode of the present application, Figure 1-2 As shown, the precision adjustment mechanism includes a first adjustment disk 6 and a second adjustment disk 7 installed on the top of the control box 5, the first adjustment disk 6 and the second adjustment disk 7 are respectively fixedly connected with a first rotating shaft 8 and a second rotating shaft 9 inside, the bottom of the second rotating shaft 9 extends to the inside of the valve cavity 2 and is fixedly connected to the valve ball 3, the outer surfaces of the first rotating shaft 8 and the second rotating shaft 9 are respectively fixedly connected with a first gear 10 and a second gear 11, and the first gear 10 is meshingly connected with the second gear 11.

[0029] By adopting the above technical solution, the device can quickly fine-tune the rotation angle of the valve ball 3 inside the valve chamber 2 through the precise adjustment mechanism, so that the operator can quickly and accurately control the flow rate flowing inside the valve chamber 2, thereby greatly improving the flow control adjustment efficiency of the device.

[0030] In the implementation mode of the present application, Figure 2-3 As shown, the limit clamping mechanism includes a fixed plate 12 installed on both sides of the top of the control box 5, a bidirectional motor 13 is fixedly connected inside the fixed plate 12, and both side output ends of the bidirectional motor 13 are fixedly connected with a screw rod 14, and the outer surface of the screw rod 14 is movably connected with a screw nut 15, and one side of the screw nut 15 is fixedly connected with a connecting rod 16, and the other end of the connecting rod 16 extends to the outside of the fixed plate 12 through a slide groove 17 and is fixedly connected to the limit plate 18.

[0031] By adopting the above technical solution, the device can quickly limit and fix the first adjustment disk 6 and the second adjustment disk 7 through the limit clamping mechanism after the adjustment is completed, thereby effectively avoiding unstable flow control due to loose adjustment disks, thereby greatly improving the flow control effect of the valve control device.

[0032] In the implementation mode of the present application, Figure 2 As shown, the inner wall of the limiting plate 18 is fixedly connected with an anti-skid sleeve, and the outer surface of the anti-skid sleeve is provided with anti-skid patterns.

[0033] By adopting the above technical solution, the anti-slip grooves can be used to increase the friction resistance, thereby achieving a better clamping effect.

[0034] In the implementation mode of the present application, Figure 1 As shown, the inner diameter of the first gear 10 is greater than the inner diameter of the second gear 11 .

[0035] By adopting the above technical solution, since the inner diameter of the second gear 11 is much smaller than the inner diameter of the first gear 10 , the rotation rate of the valve ball 3 is relatively low at this time, so that the operator can quickly and accurately control the flow rate flowing inside the valve chamber 2 .

[0036] In the implementation mode of the present application, Figure 1 As shown, a controller 20 is fixedly connected to one side of the control box 5 , and a control switch is fixedly connected to the outer surface of the controller 20 .

[0037] By adopting the above technical solution, operators can more conveniently control the electrical appliances inside the device.

[0038] When the flow rate needs to be adjusted, the operator can first rotate the second adjusting disk 7 to drive the valve ball 3 to rotate through the second rotating shaft 9, so that the valve ball 3 can roughly adjust the flow rate inside the valve cavity 2 through the liquid through hole 4. When the rough adjustment is completed, the operator loosens the second adjusting disk 7 and rotates the first adjusting disk 6, so that the first adjusting disk 6 can drive the first gear 10 to rotate through the first rotating shaft 8. When the first gear 10 rotates, it will drive the second gear 11 to rotate by meshing, so that the second gear 11 can drive the second rotating shaft 9 to rotate. Since the inner diameter of the second gear 11 is much smaller than the inner diameter of the first gear 10, At this time, the rotation rate of the valve ball 3 is relatively low, so that the operator can quickly and accurately control the flow rate flowing inside the valve chamber 2, thereby greatly improving the flow control adjustment efficiency of the device. When the adjustment is completed, the operator starts the bidirectional motor 13 through the controller 20, so that it can drive the screw rods 14 on both sides to rotate. When the screw rod 14 rotates, it will drive the limit plate 18 to limit and fix the first adjusting disk 6 and the second adjusting disk 7 under the limiting action of the connecting rod 16 and the slide groove 17, thereby effectively avoiding unstable flow control due to loosening of the adjusting disk, thereby greatly improving the flow control effect of the valve control device.

Claims

1. A valve control device for stable operation of a refinery air separation unit, arranged on a valve body (1), characterized in that: The valve body (1) is provided with a valve cavity (2) inside, and a valve ball (3) is rotatably connected to the inside of the valve cavity (2) through a precision adjustment mechanism, and a liquid through hole (4) is provided inside the valve ball (3). A control box (5) is installed on the top of the valve body (1), and both sides of the top of the control box (5) are movably connected to a limit plate (18) through a limit clamping mechanism; the precision adjustment mechanism includes a first adjustment disk (6) and a second adjustment disk (7) installed on the top of the control box (5), and the first adjustment disk (6) and the second adjustment disk (7) are respectively fixedly connected to the inside of a first rotating shaft (8) and a second rotating shaft (9), and the bottom of the second rotating shaft (9) extends into the inside of the valve cavity (2) and is fixedly connected to the valve ball (3), and the first rotating shaft (8) ) and the outer surfaces of the second rotating shaft (9) are respectively fixedly connected with a first gear (10) and a second gear (11), and the first gear (10) is meshingly connected with the second gear (11); the limit clamping mechanism comprises a fixing plate (12) installed on both sides of the top of the control box (5), the interior of the fixing plate (12) is fixedly connected with a bidirectional motor (13), both sides of the output ends of the bidirectional motor (13) are fixedly connected with a screw rod (14), the outer surface of the screw rod (14) is movably connected with a screw rod nut (15), one side of the screw rod nut (15) is fixedly connected with a connecting rod (16), the other end of the connecting rod (16) extends to the outside of the fixing plate (12) through a slide groove (17) and is fixedly connected to the limit plate (18).

2. A valve control device for stable operation of a refinery air separation unit according to claim 1, characterized in that: The inner wall of the limiting plate (18) is fixedly connected with an anti-skid sleeve, and the outer surface of the anti-skid sleeve is provided with anti-skid patterns.

3. The valve control device for stable operation of a refinery air separation unit according to claim 1, characterized in that: The inner diameter of the first gear (10) is greater than the inner diameter of the second gear (11).

4. The valve control device for stable operation of a refinery air separation unit according to claim 1, characterized in that: A controller (20) is fixedly connected to one side of the control box (5), and a control switch is fixedly connected to the outer surface of the controller (20).

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