Shafting stationary blade control mechanism and blast furnace TRT thereof

Abstract

The utility model discloses a shafting stationary blade control mechanism and a blast furnace TRT thereof, and relates to the technical field of anti-loosening treatment of interlocking equipment. The shafting stationary blade control mechanism comprises a servo oil cylinder, a sliding block and a stationary blade feedback assembly, the servo oil cylinder comprises an oil cylinder body and a piston rod, the piston rod is arranged in the oil cylinder body, the end, away from the oil cylinder body, of the piston rod is fixedly connected to the first end of the sliding block, and the stationary blade feedback assembly comprises a stationary blade feedback rod and two locking devices. The stationary blade feedback rod is slidably connected to the second end of the sliding block in the first direction, the locking device comprises a first nut, a second nut and two anti-loose gaskets, the first nut and the second nut are screwed on the stationary blade feedback rod, and the side faces, provided with oblique teeth, of the two anti-loose gaskets are in matched butt joint through meshing between the oblique teeth. And the two anti-loose gaskets which are matched and butted are arranged between the first nut and the second nut. The utility model can solve the problem that the fixed blade is out of control due to the fact that the fixed nut is loosened and even falls off under the influence of long-term vibration.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-loosening treatment of interlocking equipment, in particular to a shaft system stationary blade control mechanism and a blast furnace TRT thereof. Background Art

[0002] The stator blade feedback in the blast furnace TRT is an important control parameter in the stator blade control loop. Once a problem or deviation occurs, the stator blade will be out of control, thus affecting production. At present, the stator blade feedback rod is clamped with a fixed nut on each side of the sliding block. The fixed nut is often loosened due to the vibration of the unit. It is usually difficult to observe the loosening of the fixed nut at close range. Over time, the fixed nut will fall off due to loosening, causing the stator blade to lose control. At the same time, the equipment needs to be inspected and maintained frequently, and installation and disassembly are required during equipment inspection. Therefore, the implementation method of welding the fixed nut to the stator blade feedback rod cannot be adopted. Utility Model Content

[0003] The utility model aims to provide a shaft system stator blade control mechanism and its blast furnace TRT, so as to solve the problem in the above background technology that the fixing nut becomes loose or even falls off under the influence of long-term vibration, resulting in the stator blade being out of control.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shaft system stator blade control mechanism, including a servo oil cylinder, a sliding block, and a stator blade feedback assembly. The servo oil cylinder can be used to control the opening of the stator blades inside the fan. The servo oil cylinder includes a cylinder body and a piston rod. The piston rod is arranged in the cylinder body, and the piston rod can slide relative to the cylinder body along a first direction. The first direction is the axial direction of the piston rod. One end of the piston rod away from the cylinder body is fixedly connected to the first end of the sliding block. The stator blade feedback assembly includes a stator blade feedback rod and two sets of locking devices. The stator blade feedback rod is slidably connected to the second end of the sliding block along the first direction, and the locking device includes a first nut, a second nut and two anti-loosening washers. The first nut and the second nut are both screwed on the stator blade feedback rod, and the first nut is pressed against the sliding block. Bevel teeth are provided on one side surface of the two anti-loosening washers. The sides of the two anti-loosening washers with bevel teeth are mated and connected through the engagement between the bevel teeth. After mating and connecting, the two anti-loosening washers are arranged between the first nut and the second nut, and the second nut is pressed against the two anti-loosening washers.

[0005] Based on the above technical features, the servo cylinder can control the opening of the static blades inside the fan. At the same time, the servo cylinder will also drive the sliding block to drive the static blade feedback rod to extend and retract. The position of the static blade feedback rod can show the actual opening of the static blades inside the fan. Double nuts are used in the utility model. At the same time, two anti-loosening washers are arranged between the double nuts. When the static blade feedback assembly is subjected to vibration, impact, etc., the helical teeth between the anti-loosening washers produce relative displacement and generate lifting tension, thereby increasing the top force between the double nuts, effectively preventing the double nuts from rotating relative to each other and causing loosening, so that the locking device firmly locks the static blade feedback rod and the sliding block, so that the static blade feedback rod can feedback the actual opening of the static blades inside the fan in real time.

[0006] In the present technical solution, preferably, the other surface of the two anti-loosening washers that is different from the helical teeth is a convex surface, and the convex surface is engaged with the contact surface of the first nut and the second nut.

[0007] Based on the above technical features, providing a convex surface can increase the friction resistance between the anti-loosening gasket and the double nuts, and the friction resistance can effectively prevent relative rotation between the double nuts.

[0008] Preferably in the present technical solution, the servo cylinder also includes a positioning rod, which extends along the first direction and passes through the sliding block, and the sliding block can slide on the positioning rod under the drive of the servo cylinder; more preferably, the positioning rod is located between the first end and the second end of the sliding block.

[0009] Based on the above technical features, the positioning rod can provide a positioning effect for the sliding block, making the sliding block more stable when sliding.

[0010] In the present technical solution, preferably, the stationary blade feedback assembly further comprises a feedback rod housing, wherein the feedback rod housing is sleeved on the stationary blade feedback rod, and the stationary blade feedback rod can slide relative to the feedback rod housing along a first direction.

[0011] A blast furnace TRT comprises the above-mentioned shaft system stator blade control mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of the shaft system stationary blade control mechanism in the embodiment of the utility model;

[0013] Figure 2 For the utility model embodiment Figure 1 Enlarged schematic diagram of point Ⅰ in the middle.

[0014] In the figure: 1. servo cylinder; 11. cylinder body; 12. piston rod; 2. sliding block; 3. stationary blade feedback assembly; 31. stationary blade feedback rod; 32. locking device; 32A. first nut; 32B. second nut; 32C. anti-loosening gasket; 33. feedback rod housing; 4. positioning rod. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They 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, and therefore cannot be understood as a limitation on the present invention.

[0017] In addition, it should be understood that for the convenience of description, the sizes of various components shown in the drawings are not drawn according to the actual proportional relationship.

[0018] Before understanding the present utility model, it should be clear that the servo cylinder 1 can control the opening of the stator blades inside the fan. At the same time, the servo cylinder 1 will also drive the sliding block 2 to drive the stator blade feedback rod 31 to extend and retract. The position of the stator blade feedback rod 31 can display the actual opening of the stator blades inside the fan. If the nut becomes loose and falls off, the sliding block 2 will not be able to drive the stator blade feedback rod 31 to extend and retract. The opening information of the stator blades inside the fan displayed by the position of the stator blade feedback rod 31 will continue to be fed back to the system. When the servo cylinder 1 adjusts the opening of the stator blades, at this time, the stator blade feedback rod 31 always feeds back to the system the opening information of the stator blades displayed when the nut falls off, and the stator blade feedback rod 31 will not be able to feed back the actual opening of the stator blades in real time, causing the system to think that the stator blades are not adjusted in place and keep driving the servo cylinder to adjust the opening of the stator blades, which eventually causes the TRT stator blade equipment to lose control and cause production to stop.

[0019] like Figure 1 and Figure 2As shown, the utility model provides a technical solution: a shaft system stator blade control mechanism, which is applied to the blast furnace TRT, and the shaft system stator blade control mechanism includes a servo cylinder 1, a sliding block 2 and a stator blade feedback assembly 3. The servo cylinder 1 can be used to control the opening of the stator blades inside the fan. The servo cylinder 1 includes a cylinder body 11 and a piston rod 12. The piston rod 12 is arranged in the cylinder body 11. The cylinder body 11 can drive the piston rod 12 to slide relative to the cylinder body 11 along a first direction, wherein the first direction refers to the axial direction of the piston rod 12, and one end of the piston rod 12 away from the cylinder body 11 is fixedly connected to the first end of the sliding block 2, and the stator blade feedback assembly 3 includes a stator blade feedback rod 31 and two sets of locking devices 32. The stator blade feedback rod 31 can be slidably connected to the second end of the sliding block 2 along the first direction. Specifically, a hole is opened on the second end of the sliding block 2, and the stator blade feedback rod 31 passes through the opened hole.

[0020] Furthermore, if Figure 2 As shown, the locking device 32 includes a first nut 32A, a second nut 32B and two anti-loosening washers 32C. The first nut 32A and the second nut 32B are both screwed on the stationary blade feedback rod 31. Specifically, the stationary blade feedback rod 31 is provided with threads matching the first nut 32A and the second nut 32B. The first nut 32A and the second nut 32B are both arranged on the stationary blade feedback rod 31 by threaded connection, and the first nut 32A is tightened against the sliding block 2. The same bevel teeth are arranged on one side surface of the two anti-loosening washers 32C. The side surfaces of the two anti-loosening washers 32C with bevel teeth are mated and connected through mutual meshing of the bevel teeth. After mating and connecting, the two anti-loosening washers 32C are arranged between the first nut 32A and the second nut 32B, and the second nut 32B is tightened against the two anti-loosening washers 32C.

[0021] In the embodiment of the utility model, double nuts are used, and two anti-loosening washers 32C are arranged between the first nut 32A and the second nut 32B. When the stator blade feedback assembly is subjected to vibration, impact, etc., the helical teeth between the anti-loosening washers are relatively displaced to generate lifting tension, thereby increasing the counter force between the first nut 32A and the second nut 32B, effectively preventing the first nut 32A and the second nut 32B from rotating relative to each other and causing loosening, so that the locking device 32 firmly locks the stator blade feedback rod 31 and the sliding block 2, so that the stator blade feedback rod 31 can real-time feedback the actual opening of the stator blades inside the fan.

[0022] like Figure 2As shown, the other side of the two anti-loosening washers 32C that is different from the bevel teeth is a convex surface, which is engaged with the contact surface of the first nut 32A and the second nut 32B. The provision of the convex surface can increase the friction resistance when the anti-loosening washers 32C are in contact with the first nut 32A and the second nut 32B. The friction resistance can also effectively prevent the first nut 32A and the second nut 32B from rotating relative to each other, so that the anti-loosening effect of the nuts in the locking device 3 is fully guaranteed; in other embodiments, many small friction teeth can also be provided on the other side of the two anti-loosening washers 32C that is different from the bevel teeth.

[0023] like Figure 1 As shown, the servo cylinder also includes a positioning rod 4, which extends along a first direction and passes through the sliding block 2. Specifically, a hole is opened between the first end and the second end of the sliding block 2, and the positioning rod 4 passes through the opened hole. At the same time, the sliding block 2 can slide on the positioning rod 4 under the drive of the servo cylinder 1.

[0024] Furthermore, the stationary blade feedback assembly 3 also includes a feedback rod housing 33 , and the feedback rod housing 33 is sleeved on the stationary blade feedback rod 31 , and the stationary blade feedback rod 31 can slide relative to the feedback rod housing 33 along a first direction.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shaft system stationary blade control mechanism, characterized in that: The shaft system stationary blade control mechanism comprises: A servo cylinder (1), the servo cylinder (1) being used to control the opening of stationary blades inside a fan, the servo cylinder (1) comprising a cylinder body (11) and a piston rod (12), the piston rod (12) being arranged inside the cylinder body (11) and being able to slide relative to the cylinder body (11) along a first direction, the first direction being the axial direction of the piston rod (12); A sliding block (2), wherein one end of the piston rod (12) away from the oil cylinder body (11) is fixedly connected to a first end of the sliding block (2); A stationary blade feedback assembly (3), the stationary blade feedback assembly (3) comprising a stationary blade feedback rod (31) and two sets of locking devices (32), the stationary blade feedback rod (31) being slidably connected to the second end of the sliding block (2) along the first direction; The locking device (32) comprises a first nut (32A), a second nut (32B) and two anti-loosening washers (32C); the first nut (32A) and the second nut (32B) are both screwed onto the stationary blade feedback rod (31), and the first nut (32A) is pressed against the sliding block (2); one side surface of the two anti-loosening washers (32C) is provided with helical teeth; the sides of the two anti-loosening washers (32C) provided with the helical teeth are mated with each other through the meshing between the helical teeth; the two anti-loosening washers (32C) after mating are arranged between the first nut (32A) and the second nut (32B), and the second nut (32B) is pressed against the two anti-loosening washers (32C).

2. A shaft system stationary blade control mechanism according to claim 1, characterized in that: The other surface of the two anti-loosening washers (32C) that is different from the oblique teeth is a convex surface, and the convex surface is engaged with the contact surface of the first nut (32A) and the second nut (32B).

3. A shaft system stationary blade control mechanism according to claim 1, characterized in that: The servo oil cylinder (1) further comprises a positioning rod (4), wherein the positioning rod (4) extends along the first direction and passes through the sliding block (2), and the sliding block (2) can slide on the positioning rod (4) under the drive of the servo oil cylinder (1).

4. A shaft system stationary blade control mechanism according to claim 3, characterized in that: The positioning rod (4) is located between the first end and the second end of the sliding block (2).

5. The shaft system stationary blade control mechanism according to claim 1, characterized in that: The stationary blade feedback assembly (3) further comprises a feedback rod housing (33), wherein the feedback rod housing (33) is sleeved on the stationary blade feedback rod (31), and the stationary blade feedback rod (31) can slide relative to the feedback rod housing (33) along a first direction.

6. A blast furnace TRT, characterized in that: The invention comprises the shafting stationary blade control mechanism as described in claims 1-5.

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