Coking tower internal part capable of flexibly adjusting recycle ratio

Abstract

The utility model relates to the technical field of coke towers, in particular to a coke tower internal part capable of flexibly adjusting the recycle ratio, which comprises a valve body, a valve rod and a protective tube, a buffer protective mechanism is arranged in the protective tube, and a filtering anti-blocking mechanism is arranged on the side edge of the buffer protective mechanism. When the coke tower internal part capable of flexibly adjusting the recycle ratio is used, the two buffer plates are arranged at the staggered positions in the liquid inlet pipeline and matched with the design that the buffer plates move backwards under the impact force, so that the supporting springs are shrunk; impact force buffering is conducted on part of liquid through the blocking effect of the buffering plate, the part of impact force is consumed through the contraction process of the spring, and therefore the impact force of the liquid entering the control valve is greatly reduced, the installation stability of the adjusting valve is guaranteed on the basis that the impact force of the liquid is reduced, and the overall structural design is ingenious; and the practical effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of coking towers, and particularly to an internal component of a coking tower with a flexible adjustable circulation ratio. Background Art

[0002] A coking tower is a device used in the coking process of petrochemical processes. Coking is the process of converting heavy petroleum (such as crude oil or heavy oil) into light petroleum products (such as fuel oil and gasoline). The main function of the coking tower is to provide a heating and reaction environment for the decomposition of heavy petroleum into lighter hydrocarbons and solid coke. The internal component with an adjustable circulation ratio at the bottom end of the coking tower usually uses a control valve in cooperation with a pump. By adjusting the opening degree of the valve at the bottom of the coking tower, the circulation flow rate of the materials in the tower can be changed, thereby adjusting the distribution and removal efficiency of each component.

[0003] When the control valve at the bottom end of the coking tower is opened, the instantaneous change in liquid flow will cause the formation of shock waves, thereby triggering the water hammer effect and causing severe vibration of the pipeline. In the long term, it will lead to pipeline fatigue, cracks or fractures, and even cause water leakage, thus affecting the normal circulation of the coking liquid in the coking tower, and the overall safety is not good enough. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an internal component of a coking tower with a flexible adjustable circulation ratio to solve the above problems, improving the problem that the existing internal component of a coking tower with a flexible adjustable circulation ratio cannot consume and relieve the water hammer effect, resulting in pipeline fatigue, cracks or fractures, and even causing water leakage.

[0005] An internal component of a coking tower with a flexible adjustable circulation ratio includes a valve body, a valve rod and a protective tube. A valve rod is installed inside the valve body, and the extending end of the valve rod is arranged above the valve body. A protective tube is arranged on the side outer wall of the valve body. A buffer protection mechanism is arranged inside the protective tube, and a filter and anti-blocking mechanism is arranged on the side of the buffer protection mechanism. A locking control mechanism is arranged above the valve body. The buffer protection mechanism includes a buffer plate, a limiting T-shaped block, a limiting T-shaped groove and a supporting spring. Buffer plates are arranged at the staggered positions on the side inner wall of the protective tube. Limiting T-shaped blocks are arranged on the side outer wall of the buffer plate. Limiting T-shaped grooves are opened on the side inner wall of the protective tube. The limiting T-shaped blocks and the limiting T-shaped grooves are slidably connected. A supporting spring is connected between the side outer wall of the limiting T-shaped block and the bottom inner wall of the limiting T-shaped groove.

[0006] Preferably, the buffer plate is arranged in a semi-circular structure, and the outer walls on both sides of the buffer plate are provided with arc-shaped structures.

[0007] Preferably, the filtering and anti-blocking mechanism includes a butt joint pipe, an annular thread groove, a mounting pipe and a protective filter screen. The outer wall of the side of the protective pipe is provided with the butt joint pipe. The outer wall of the side of the butt joint pipe is provided with the annular thread groove. The side of the butt joint pipe is provided with the mounting pipe. The inner wall of the side of the mounting pipe is provided with the protective filter screen.

[0008] Preferably, a limit thread ring is provided on the outer wall of the side of the mounting pipe. The limit thread ring and the annular thread groove are installed by threads.

[0009] Preferably, the protective filter screen is arranged in a porous mesh structure.

[0010] Preferably, the locking and control mechanism includes a support seat, a limit worm gear and a limit worm. The outer wall of the top of the valve body is provided with the support seat, and the valve stem is rotatably installed inside the support seat. The limit worm gear is arranged outside the valve stem, and the limit worm is connected to the side of the limit worm gear.

[0011] Preferably, one end of the limit worm is rotatably installed on the outer wall of the side of the positioning support block. The other end of the limit worm is connected to the valve handwheel. The bottom outer wall of the positioning support block is connected to the top outer wall of the support seat.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. When the internals of the coking tower capable of flexibly adjusting the circulation ratio are in use, through the settings of the buffer plate, the limit T-shaped block, the limit T-shaped groove and the support spring, by arranging two buffer plates at staggered positions inside the liquid inlet pipe and matching the design that the support spring contracts after the buffer plate is impacted and moves backward, the impact force of part of the liquid is buffered by the blocking effect of the buffer plate and the impact force is consumed through the contraction process of the spring, so that the impact force of the liquid entering the control valve is greatly reduced, and on the basis of reducing the liquid impact force, the installation stability of the regulating valve is ensured. The overall structure design is ingenious and the practical effect is good;

[0014] 2. When the internals of the coking tower capable of flexibly adjusting the circulation ratio are in use, since part of the un-coked solid particle products are entrained in the coking liquid products of the coking tower, through the design of adding a limit filter screen inside the circulation pipe, the solid particles inside the coking liquid will be automatically isolated on the side of the limit filter screen when the coking liquid circulates, and then the reciprocating circulation ensures the cleanliness of the coking liquid inside the device. Further, the limit filter screen is designed to be detachable, which facilitates the subsequent cleaning process of solid impurities. At the same time, through the design of driving the valve to open and close by worm and worm gear transmission, using the transmission locking effect of the worm and worm gear, when the valve is opened to the appropriate opening and stops rotating, the valve handwheel will be directly locked. The overall structure design is ingenious and the practical effect is good. Description of the Drawings

[0015] Figure 1 is a schematic three-dimensional structure diagram of the overall of the present utility model;

[0016] Figure 2 is a schematic three-dimensional sectional structure diagram of the overall of the present utility model;

[0017] Figure 3 is a schematic three-dimensional structure diagram of the buffer protection mechanism of the present utility model;

[0018] Figure 4 is a schematic three-dimensional structure diagram of the filtering and anti-blocking mechanism of the present utility model;

[0019] Figure 5 is a schematic three-dimensional structure diagram of the locking control mechanism of the present utility model;

[0020] Figure 6 of the present utility model Figure 5 is an enlarged schematic three-dimensional structure diagram at position A in

[0021] In the figure: 1, valve body; 2, valve stem; 3, protective tube; 4, buffer protection mechanism; 41, buffer plate; 42, limit T-shaped block; 43, limit T-shaped groove; 44, support spring; 5, filtering and anti-blocking mechanism; 51, docking pipe; 52, annular thread groove; 53, installation pipe; 54, protective filter screen; 55, limit thread ring; 6, locking control mechanism; 61, support seat; 62, limit worm gear; 63, limit worm; 64, positioning support block; 65, valve handwheel. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] During specific implementation: As Figures 1-6As shown in the figure, an internals for coking tower with flexible adjustable recycle ratio includes a valve body 1, a valve rod 2 and a protection tube 3. The valve rod 2 is installed inside the valve body 1, and the extending end of the valve rod 2 is located above the valve body 1. A protection tube 3 is arranged on the side outer wall of the valve body 1. A buffer protection mechanism 4 is arranged inside the protection tube 3, a filter anti-blocking mechanism 5 is arranged on the side of the buffer protection mechanism 4, and a locking control mechanism 6 is arranged above the valve body 1. The buffer protection mechanism 4 includes a buffer plate 41, a limit T-shaped block 42, a limit T-shaped groove 43 and a support spring 44. Buffer plates 41 are arranged at staggered positions on the side inner wall of the protection tube 3. A limit T-shaped block 42 is arranged on the side outer wall of the buffer plate 41. A limit T-shaped groove 43 is formed on the side inner wall of the protection tube 3. The limit T-shaped block 42 and the limit T-shaped groove 43 are slidably connected. A support spring 44 is connected between the side outer wall of the limit T-shaped block 42 and the bottom inner wall of the limit T-shaped groove 43. Since when the ball valve is opened too fast, the instantaneous change of liquid flow will cause the formation of shock waves, thus triggering the water hammer effect. Here, it is noted that the side of the valve body 1 close to the protection tube 3 is the water inlet end. When the valve body 1 is opened, the impact force of the liquid will first be transmitted to the two buffer plates 41 arranged at staggered positions. Subsequently, the buffer plates 41 will automatically move backward in the same direction as the water flow under the impact force. Furthermore, the movement of the buffer plates 41 will automatically drive the limit T-shaped blocks 42 to slide inside the limit T-shaped grooves 43 and play a role in limiting and supporting the movement of the buffer plates 41. At the same time, the support spring 44 is in a contracted state under the extrusion of the limit T-shaped block 42, and part of the liquid impact force is consumed and buffered through this contraction process, so that the impact force of the liquid entering the valve body 1 becomes smaller, thus achieving the effect of weakening the water hammer effect and playing a good protective effect on the valve body 1.

[0024] The buffer plate 41 is arranged in a semi-circular structure, and arc-shaped structures are arranged on the outer walls of both sides of the buffer plate 41. Arranging the buffer plate 41 in a semi-circular structure enables it to better guide the water flow. Arranging arc-shaped structures on the outer walls of both sides of the buffer plate 41 makes it not easily damaged by the water flow impact force.

[0025] The filtering and anti-blocking mechanism 5 includes a butt joint pipe 51, an annular thread groove 52, a mounting pipe 53 and a protective filter screen 54. The outer wall of the side of the protective pipe 3 is provided with the butt joint pipe 51. The outer wall of the side of the butt joint pipe 51 is provided with the annular thread groove 52. The side of the butt joint pipe 51 is provided with the mounting pipe 53. The inner wall of the side of the mounting pipe 53 is provided with the protective filter screen 54. The outer wall of the side of the mounting pipe 53 is provided with a limit thread ring 55. The limit thread ring 55 and the annular thread groove 52 are installed by threads. When the liquid generated during the coking process of the coking tower flows into the valve body main body 1 after the valve body main body 1 is opened, at this time, this part of the liquid will first pass through the mounting pipe 53, and then the protective filter screen 54 arranged inside the mounting pipe 53 will isolate a small amount of solid impurities entrained in the liquid on the side of the protective filter screen 54, so that the liquid entering the valve body main body 1 is relatively clean liquid. When it is necessary to clean the solid impurities on the side of the protective filter screen 54, at this time, only need to rotate the mounting pipe 53 until the limit thread ring 55 on its side completely disengages from the annular thread groove 52. After cleaning, the installation is the same.

[0026] The protective filter screen 54 is arranged in a porous mesh structure; the protective filter screen 54 is arranged in a porous mesh structure here, so that it can filter and isolate a small amount of solid impurity particles entrained in the water on the basis of not affecting the water flow.

[0027] The locking control mechanism 6 includes a support seat 61, a limit worm gear 62 and a limit worm 63. The outer wall of the top of the valve body main body 1 is provided with the support seat 61, and the valve stem 2 is rotatably installed inside the support seat 61. The outer part of the valve stem 2 is provided with the limit worm gear 62. The side of the limit worm gear 62 is connected with the limit worm 63. One end of the limit worm 63 is rotatably installed on the outer wall of the side of the positioning support block 64, and the other end of the limit worm 63 is connected with the valve handwheel 65. The bottom outer wall of the positioning support block 64 is connected with the top outer wall of the support seat 61. Since the coking tower can change the circulation flow rate of the materials in the tower by adjusting the opening degree of the bottom valve, so as to adjust the distribution and removal efficiency of each component. Then when it is necessary to open the valve body main body 1, at this time, first need to rotate the valve handwheel 65. Subsequently, the rotation of the valve handwheel 65 will automatically drive the limit worm 63 to rotate and then drive the limit worm gear 62 to rotate. Here, the setting of the positioning support block 64 plays a positioning and supporting effect on the limit worm 63, and the setting of the support seat 61 plays a positioning and installation effect on the positioning support block 64. Subsequently, the rotation of the limit worm gear 62 will automatically drive the valve stem 2 to rotate. When the valve is opened to an appropriate size, directly stop rotating the valve handwheel 65. Then, by using the transmission self-locking function of the limit worm gear 62 and the limit worm 63, the locking effect can be automatically achieved, so as to achieve the effect of opening and locking the opening degree.

[0028] When the utility model is in use, since the circulation flow rate of the materials in the coking tower can be changed by adjusting the opening degree of the bottom valve, thereby adjusting the distribution of each component and the removal efficiency, and then when it is necessary to open the valve body 1, first, the valve handwheel 65 needs to be rotated. Subsequently, when the valve handwheel 65 rotates, it will automatically drive the limit worm 63 to rotate, and then drive the limit worm gear 62 to rotate. Here, the setting of the positioning support block 64 plays a positioning and supporting effect on the limit worm 63, and the setting of the support seat 61 plays a positioning and installation effect on the positioning support block 64. Subsequently, when the limit worm gear 62 rotates, it will automatically drive the valve stem 2 to rotate. When the valve is opened to an appropriate size, directly stop rotating the valve handwheel 65. Then, by using the transmission self-locking function of the limit worm gear 62 and the limit worm 63, the locking effect can be automatically achieved, so as to achieve the effect of opening and locking the opening degree;

[0029] When the liquid generated during the coking process of the coking tower flows into the valve body 1 after the valve body 1 is opened, this part of the liquid will first pass through the installation pipe 53, and then through the protective filter screen 54 arranged inside the installation pipe 53, a small part of the solid impurities entrained in the liquid will be isolated on the side of the protective filter screen 54, so that the liquid entering the valve body 1 is relatively clean liquid. When it is necessary to clean the solid impurities on the side of the protective filter screen 54, only need to rotate the installation pipe 53 until the limit thread ring 55 on its side is completely separated from the annular thread groove 52. After the cleaning is completed, the installation is the same.

[0030] Since when the ball valve is opened too fast, the instantaneous change in the liquid flow will cause the formation of shock waves, thereby triggering the water hammer effect. Here, it is noted that the side of the valve body 1 close to the protective pipe 3 is the water inlet end. When the valve body 1 is opened, the impact force of the liquid will first be transmitted to two buffer plates 41 arranged at staggered positions. Subsequently, the buffer plates 41 will automatically move backward in the same direction as the water flow under the impact force. Then, when the buffer plates 41 move, they will automatically drive the limit T-shaped block 42 to slide inside the limit T-shaped groove 43 and play a limiting and supporting effect on the movement of the buffer plates 41. At the same time, the support spring 44 is in a contracted state under the extrusion of the limit T-shaped block 42, and through this contraction process, part of the liquid impact force is consumed and buffered, so that the impact force of the liquid entering the valve body 1 becomes smaller, thereby weakening the water hammer effect and playing a good protective effect on the valve body 1.

[0031] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. The narrative way of this specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A coking tower internals with a flexible adjustable recycle ratio, characterized in that It includes a valve body main body (1), a valve stem (2) and a protection tube (3): The valve stem (2) is installed inside the valve body main body (1), and the protruding end of the valve stem (2) is arranged above the valve body main body (1). A protection tube (3) is arranged on the side outer wall of the valve body main body (1). A buffer protection mechanism (4) is arranged inside the protection tube (3). A filtering and anti-blocking mechanism (5) is arranged on the side of the buffer protection mechanism (4). A locking control mechanism (6) is arranged above the valve body main body (1). The buffer protection mechanism (4) includes a buffer plate (41), a limiting T-shaped block (42), a limiting T-shaped groove (43), and a support spring (44). Buffer plates (41) are arranged at the staggered positions on the side inner wall of the protection tube (3). A limiting T-shaped block (42) is arranged on the side outer wall of the buffer plate (41). A limiting T-shaped groove (43) is opened on the side inner wall of the protection tube (3). The limiting T-shaped block (42) and the limiting T-shaped groove (43) are slidably connected. A support spring (44) is connected between the side outer wall of the limiting T-shaped block (42) and the bottom inner wall of the limiting T-shaped groove (43).

2. The internals of a coking tower with a flexibly adjustable recycle ratio according to claim 1, characterized in that: The buffer plate (41) is arranged in a semi-circular structure, and arc-shaped structures are arranged on the two side outer walls of the buffer plate (41).

3. The internals of a coking tower with a flexibly adjustable recycle ratio according to claim 1, characterized in that: The filtering and anti-blocking mechanism (5) includes a butt joint pipe (51), an annular thread groove (52), an installation pipe (53) and a protection filter screen (54). A butt joint pipe (51) is arranged on the side outer wall of the protection tube (3). An annular thread groove (52) is opened on the side outer wall of the butt joint pipe (51). An installation pipe (53) is arranged on the side of the butt joint pipe (51). A protection filter screen (54) is arranged on the side inner wall of the installation pipe (53).

4. The internals of a coking tower with a flexibly adjustable recycle ratio according to claim 3, characterized in that: A limiting thread ring (55) is arranged on the side outer wall of the installation pipe (53), and the limiting thread ring (55) and the annular thread groove (52) are threadedly installed.

5. A coke drum internals capable of flexibly adjusting the recycle ratio according to claim 3, characterized in that: The protection filter screen (54) is arranged in a porous mesh structure.

6. The internals of a coking tower with a flexibly adjustable recycle ratio according to claim 1, characterized in that: The locking control mechanism (6) includes a support seat (61), a limiting worm gear (62) and a limiting worm (63). A support seat (61) is arranged on the top outer wall of the valve body main body (1), and the valve stem (2) is rotatably installed inside the support seat (61). A limiting worm gear (62) is arranged on the outside of the valve stem (2), and a limiting worm (63) is connected to the side of the limiting worm gear (62).

7. A coke drum internals capable of flexibly adjusting the recycle ratio according to claim 6, characterized in that: One end of the limiting worm (63) is rotatably installed on the side outer wall of the positioning support block (64), the other end of the limiting worm (63) is connected to the valve handwheel (65), and the bottom outer wall of the positioning support block (64) is connected to the top outer wall of the support seat (61).

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