Constant pressure adjusting device of blast furnace gas unit

Abstract

The utility model discloses a blast furnace gas set constant pressure adjusting device which comprises a gas set tank body, the top end of the gas set tank body is provided with a second communicating pipe in a communicating mode, the top end of the second communicating pipe is provided with a valve shell in a communicating mode, the bottom end of the valve shell is provided with a valve element in a sliding mode, and the valve element penetrates through the bottom end of the valve shell and is communicated with the second communicating pipe. A top plate is fixedly mounted at the top end of the valve element. The second gear is rotated through the motor, the second gear drives the first gear to rotate, due to the fact that the second gear is small, the first gear is large, when the second gear rotates, the first gear is driven to rotate, the first gear can have large torque, rotation of the lifting column can be achieved, and the lifting column is driven to rotate while rotating. The lifting column is driven by the motor to drive the lower pressure adjusting screw rod to rotate, the lifting column can move downwards along with the pressure adjusting screw rod under the action of the limiting groove and the limiting strip, and large-torque rotation is achieved only through a common motor.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnaces, in particular to a constant pressure regulating device for a blast furnace gas unit. Background Art

[0002] The blast furnace is the core equipment in steel production, used to reduce iron ore into pig iron. Its internal structure is complex, including the furnace shell, lining, cooling system, tuyere and other parts, and its operation involves high temperature and high pressure environment. Blast furnace production is characterized by continuity and complex physical and chemical reactions, and has strict requirements on raw materials, operation and equipment maintenance. With the development of technology, modern blast furnaces have introduced automated control, energy-saving and environmental protection technology and charge pretreatment processes, aiming to improve production efficiency, reduce energy consumption and reduce environmental pollution.

[0003] The blast furnace gas gas-fired unit is an energy conversion device that efficiently utilizes the by-product gas of the blast furnace. The unit drives the generator to generate electricity by burning blast furnace gas, realizing comprehensive energy utilization, and has significant advantages in energy conservation, emission reduction, and improving energy utilization efficiency.

[0004] Constant pressure regulation is required inside the blast furnace gas gas unit because blast furnace gas is used as the fuel for the gas unit, and its pressure stability is crucial to the operating efficiency and safety of the unit. Constant pressure regulation can ensure stable gas supply and avoid unstable combustion, reduced efficiency or equipment damage. As a common constant pressure regulating component, the pressure regulating valve is widely used in gas pipelines. It controls the medium flow by changing the valve opening, realizes precise regulation of gas, and has a safety protection function. Therefore, in the blast furnace gas gas unit, the pressure regulating valve is indispensable, which ensures the stable operation and safety of the unit. In short, the blast furnace gas gas unit requires constant pressure regulation to ensure stable operation. As a key component, the pressure regulating valve ensures the efficient and safe operation of the unit by accurately adjusting the gas pressure and providing safety protection.

[0005] In the prior art, we encountered a key problem when rotating the pressure regulating bolt above the pressure regulating valve inside the blast furnace gas gas unit. Since the design of the pressure regulating spring gives it a large elastic potential energy, this means that when trying to rotate the pressure regulating bolt, it is necessary to overcome a considerable elastic force. However, ordinary motors are often unable to output torque and cannot provide enough power to effectively adjust the pressure regulating bolt above the pressure regulating valve. This leads to a practical operational problem: we need to find a solution to provide sufficient torque. To this end, a common practice is to install a high-torque motor, or to design a complex system to achieve rotation through a cylinder and a transmission assembly. However, both of these solutions bring obvious disadvantages, which is to increase the manufacturing cost of the equipment and the subsequent maintenance cost, which is obviously not conducive to practical applications. Utility Model Content

[0006] The utility model aims to provide a constant pressure regulating device for a blast furnace gas unit to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a constant pressure regulating device of a blast furnace gas unit, comprising a gas unit tank body, the top end of the gas unit tank body is connected and installed with a second connecting pipe, the top end of the second connecting pipe is connected and installed with a valve shell, the bottom end of the valve shell is slidably provided with a valve core, the valve core passes through the bottom end of the valve shell and is connected with the second connecting pipe, the top end of the valve core is fixedly installed with a top plate, the top end of the top plate is fixedly installed with a pressure regulating spring, the top end of the pressure regulating spring is fixedly installed with a pressure plate, the pressure plate is slidably connected with the inner wall of the valve shell, the top end of the valve shell is fixedly installed with a fixing plate, the fixing plate is threadedly installed with a pressure regulating screw, the bottom end of the pressure regulating screw is rotatably connected with the pressure plate, the top end of the pressure regulating screw is fixedly installed with a lifting column, the side wall of the lifting column is sleeved with a first gear, a second gear is arranged on one side of the first gear, and the first gear and the second gear are meshed with each other.

[0008] As a further description of the above technical solution: a support frame is fixedly installed on the top of the valve housing, a fixing frame is fixedly installed on the top of the support frame, a motor is fixedly installed inside the fixing frame, and an output end of the motor is transmission-connected to the second gear.

[0009] As a further description of the above technical solution: two limit bars are fixedly installed on the side wall of the lifting column, a connecting ring is fixedly installed on the first gear, two limit grooves are provided on the inner wall of the connecting ring, and the two limit bars are slidably connected to the two limit grooves.

[0010] As a further description of the above technical solution: limiting frames are fixedly installed on the inner walls on both sides of the support frame, and the two limiting frames are rotationally connected to the first gear and the second gear respectively.

[0011] As a further description of the above technical solution: a first connecting pipe is installed in communication with the side wall of the valve housing.

[0012] As a further description of the above technical solution: two limit blocks are fixedly installed on the inner wall of the valve housing, and the two limit blocks are arranged below the top plate.

[0013] The utility model provides a constant pressure regulating device for a blast furnace gas unit. It has the following beneficial effects: when the pressure regulating spring needs to be adjusted, that is, when the constant pressure of the pressure reducing valve needs to be adjusted, the pressure regulating screw needs to be adjusted, and the second gear is rotated by the motor, and the second gear drives the first gear to rotate. Since the second gear is smaller and the first gear is larger, when the second gear rotates, it drives the first gear to rotate, and the first gear can have a larger torque, which is enough to realize the rotation of the lifting column. When the lifting column rotates, it drives the pressure regulating screw below to rotate, and under the action of the limit groove and the limit strip, the lifting column can move downward with the pressure regulating screw, realizing the rotation with large torque only by using an ordinary motor.

[0014] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0015] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a constant pressure regulating device for a blast furnace gas unit proposed by the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-section three-dimensional structure of the utility model;

[0018] Figure 3 It is a cross-sectional structural schematic diagram of the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the pressure regulating screw, the lifting column, the first gear and the second gear of the utility model.

[0020] Legend:

[0021] 1. Gas unit tank; 2. Valve housing; 3. Support frame; 4. Fixed frame; 5. Motor; 6. Limit frame; 7. First gear; 8. Second gear; 9. Fixed plate; 10. Pressure regulating screw; 11. Pressure plate; 12. Pressure regulating spring; 13. Top plate; 14. Limit block; 15. Valve core; 16. First connecting pipe; 17. Second connecting pipe; 18. Lifting column; 19. Limit strip; 20. Connecting ring; 21. Limit groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-4 , a constant pressure regulating device for a blast furnace gas unit, comprising a gas unit tank body 1, a second connecting pipe 17 is connected and installed at the top end of the gas unit tank body 1, a valve shell 2 is connected and installed at the top end of the second connecting pipe 17, a valve core 15 is slidably provided at the bottom end of the valve shell 2, the valve core 15 passes through the bottom end of the valve shell 2 and is connected with the second connecting pipe 17, a top plate 13 is fixedly installed at the top end of the valve core 15, a pressure regulating spring 12 is fixedly installed at the top end of the top plate 13, a pressure regulating spring 12 is fixedly installed at the top end of the pressure regulating spring 12, the pressure plate 11 is slidably connected to the inner wall of the valve shell 2, a fixing plate 9 is fixedly installed at the top end of the valve shell 2, a pressure regulating screw 10 is threadedly installed on the fixing plate 9, the bottom end of the pressure regulating screw 10 is rotatably connected to the pressure plate 11, a lifting column 18 is fixedly installed at the top end of the pressure regulating screw 10, a first gear 7 is sleeved on the side wall of the lifting column 18, a second gear 8 is provided on one side of the first gear 7, and the first gear 7 is connected to the second gear 8. The two gears 8 are meshed with each other; the gas unit tank body 1, the valve core 15, the valve shell 2 and the components inside the valve shell 2 are all existing technologies. Their function is to balance the air pressure through the valve core 15 and the pressure-regulating spring 12, so as to realize the constant pressure of the first connecting pipe 16 and the second connecting pipe 17. When it is necessary to adjust the pressure-regulating spring 12, that is, to adjust the constant pressure of the pressure reducing valve, it is necessary to adjust it through the pressure-regulating screw 10, and the second gear 8 is rotated by the motor 5, and the second gear 8 drives the first gear 7 to rotate. Since the second gear 8 is smaller and the first gear 7 is larger, when the second gear 8 rotates, it drives the first gear 7 to rotate. The first gear 7 can have a large torque, which is enough to realize the rotation of the lifting column 18. When the lifting column 18 rotates, it drives the pressure-regulating screw 10 below to rotate, and under the action of the limit groove 21 and the limit strip 19, the lifting column 18 can move downward with the pressure-regulating screw 10, so that a large torque rotation can be realized only by an ordinary motor 5.

[0024] As a preferred technical solution of this embodiment, a support frame 3 is fixedly installed on the top of the valve housing 2, a fixing frame 4 is fixedly installed on the top of the support frame 3, a motor 5 is fixedly installed inside the fixing frame 4, and the output end of the motor 5 is transmission-connected to the second gear 8; the support frame 3 and the fixing frame 4 can fix the motor 5, and the second gear 8 can be rotated by the motor 5.

[0025] As a preferred technical solution of this embodiment, two limit strips 19 are fixedly installed on the side wall of the lifting column 18, a connecting ring 20 is fixedly installed on the first gear 7, and two limit grooves 21 are provided on the inner wall of the connecting ring 20, and the two limit strips 19 are slidably connected with the two limit grooves 21; the setting of the limit grooves 21 and the limit strips 19 can realize the limit guiding between the connecting ring 20 and the lifting column 18, and prevent the connecting ring 20 and the lifting column 18 from relative rotation, thereby affecting the normal adjustment of the pressure regulating screw 10.

[0026] As a preferred technical solution of this embodiment, limiting frames 6 are fixedly installed on the inner walls on both sides of the support frame 3, and the two limiting frames 6 are rotatably connected to the first gear 7 and the second gear 8 respectively; the two limiting frames 6 can limit the first gear 7 and the second gear 8, so that the two gears can rotate stably.

[0027] As a preferred technical solution of this embodiment, a first connecting pipe 16 is installed in communication with the side wall of the valve housing 2; the first connecting pipe 16 can be connected to another gas unit tank 1 or directly communicated with the atmospheric pressure.

[0028] As a preferred technical solution of this embodiment, two limit blocks 14 are fixedly installed on the inner wall of the valve housing 2, and the two limit blocks 14 are arranged below the top plate 13; the setting of the limit blocks 14 can fix and limit the top plate 13, so that the valve core 15 can move within a certain range, thereby ensuring the normal use of the pressure regulating valve.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A constant pressure regulating device for a blast furnace gas unit, comprising a gas unit tank body (1), the top end of the gas unit tank body (1) is connected and installed with a second connecting pipe (17), the top end of the second connecting pipe (17) is connected and installed with a valve shell (2), the bottom end of the valve shell (2) is slidably provided with a valve core (15), the valve core (15) passes through the bottom end of the valve shell (2) and is connected with the second connecting pipe (17), the top end of the valve core (15) is fixedly installed with a top plate (13), the top end of the top plate (13) is fixedly installed with a pressure regulating spring (12), the top end of the pressure regulating spring (12) is fixedly installed with a pressure plate (11), the pressure plate (11) is slidably connected with the inner wall of the valve shell (2), the top end of the valve shell (2) is fixedly installed with a fixing plate (9), a pressure regulating screw (10) is threadedly installed on the fixing plate (9), the bottom end of the pressure regulating screw (10) is rotatably connected with the pressing plate (11), characterized in that A lifting column (18) is fixedly mounted on the top end of the pressure regulating screw rod (10); a first gear (7) is sleeved on the side wall of the lifting column (18); a second gear (8) is arranged on one side of the first gear (7); the first gear (7) and the second gear (8) are meshed with each other.

2. A constant pressure regulating device for a blast furnace gas unit according to claim 1, characterized in that: A support frame (3) is fixedly mounted on the top of the valve housing (2), a fixing frame (4) is fixedly mounted on the top of the support frame (3), a motor (5) is fixedly mounted inside the fixing frame (4), and an output end of the motor (5) is drivingly connected to a second gear (8).

3. A constant pressure regulating device for a blast furnace gas unit according to claim 1, characterized in that: Two limit bars (19) are fixedly mounted on the side wall of the lifting column (18); a connecting ring (20) is fixedly mounted on the first gear (7); two limit grooves (21) are formed on the inner wall of the connecting ring (20); and the two limit bars (19) are slidably connected to the two limit grooves (21).

4. A blast furnace gas unit constant pressure regulating device according to claim 2, characterized in that: Limiting frames (6) are fixedly mounted on the inner walls of both sides of the support frame (3), and the two limiting frames (6) are rotatably connected to the first gear (7) and the second gear (8) respectively.

5. A constant pressure regulating device for a blast furnace gas unit according to claim 1, characterized in that: A first connecting pipe (16) is installed in communication with the side wall of the valve housing (2).

6. A blast furnace gas unit constant pressure regulating device according to claim 1, characterized in that: Two limit blocks (14) are fixedly mounted on the inner wall of the valve housing (2), and the two limit blocks (14) are arranged below the top plate (13).

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