Circulating flushing assembly of coking indirect final cooling tower

Abstract

The invention relates to the technical field of final cooling tower cleaning, in particular to a coking indirect final cooling tower circulating flushing assembly which comprises a final cooling tower fixed to the top of a supporting frame, a liquid box used for storing liquid for flushing the inner wall of the final cooling tower is arranged below the final cooling tower, and a circulating pump is arranged on one side of the liquid box. A scraping assembly used for cleaning the inner wall of the final cooling tower is arranged in the final cooling tower, a main channel is arranged in the final cooling tower, the top end of the main channel penetrates through the top of the final cooling tower and communicates with a water supply pipe, one end of the water supply pipe is connected with a circulating pump, and the main channel and the inner wall of the final cooling tower are fixedly connected through a transverse rod. Through cooperation of flushing and scraping, comprehensive and efficient cleaning is achieved, and the requirement for cleaning complex dirt is met.

Description

Technical Field

[0001] This invention relates to the field of final cooling tower cleaning technology, specifically a circulating flushing component for an indirect coking final cooling tower. Background Technology

[0002] In the coking process, the purification of coal gas is a crucial step in ensuring the stable operation of subsequent processes and product quality. As an important component of the purification process, the final cooling of coal gas plays a key role in reducing the temperature of the coal gas after processes such as ammonia removal and benzene removal to a specific range. However, impurities such as tar mist, naphthalene, and dust carried in the coal gas are prone to adhering to the surface of the heat exchange tube bundles in the indirect final cooling tower due to factors such as temperature changes and reduced flow rates, forming scale. This scale not only significantly reduces heat exchange efficiency, causing the coal gas outlet temperature to rise and affecting the normal operation of subsequent processes, but may also cause uneven airflow distribution within the tower due to local blockage, increasing system resistance, and even leading to serious problems such as equipment corrosion and tube blockage, increasing equipment maintenance costs and the frequency of downtime for repairs.

[0003] Currently, most flushing and cleaning equipment has a relatively simple cleaning method, making it difficult to deal with complex dirt such as thick scale on the tower wall and stubborn stains on the edges and corners. In addition, the coverage is limited, and it is easy to form cleaning blind spots at different heights of the tower wall.

[0004] In response to the aforementioned technical deficiencies, and with the aim of improving the comprehensiveness and thoroughness of cleaning, an improved approach is proposed, which adopts a linkage mechanism for rinsing and scraping and optimizes the scraping trajectory to adapt to the diverse forms of dirt in the final cooling tower and avoid the decline in equipment operating efficiency due to incomplete cleaning. Summary of the Invention

[0005] The purpose of this invention is to provide a circulating flushing assembly for an indirect final cooling tower in coking, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a coking indirect final cooling tower circulating flushing assembly, comprising a final cooling tower fixed to the top of a support frame, a liquid tank for storing liquid for flushing the inner wall of the final cooling tower disposed below the final cooling tower, a circulating pump disposed on one side of the liquid tank, and a scraping assembly for cleaning the inner wall of the final cooling tower disposed inside the final cooling tower.

[0007] Furthermore, the interior of the final cooling tower is provided with a main channel, the top of which penetrates through the top of the final cooling tower and is connected to a water supply pipe. One end of the water supply pipe is connected to a circulating pump, and the main channel and the inner wall of the final cooling tower are fixedly connected by a crossbar.

[0008] Furthermore, the outer side of the main channel is provided with multiple sets of branch pipes in a ring array, and the branch pipes are connected to the main channel.

[0009] Furthermore, the scraping assembly includes a support plate, an electric push rod, and a base. The support plate is fixed to the outside of the main channel, and a support frame is sleeved and fixed to the outside of the main channel. The base is sleeved on the outside of the support frame, and the base and the support frame are movably connected by bearings. The electric push rod is symmetrically fixed to the bottom of the support plate, and rotating seats are arranged in a ring array on the outside of the base.

[0010] Furthermore, one end of the rotating seat is movably connected to the base via a bearing, and the other end of the rotating seat is fixedly connected to a connecting rod, with a scraper fixedly connected to one end of the connecting rod.

[0011] Furthermore, a drive frame is fixedly connected to the outer side of the rotating seat, and an annular track frame is provided below the electric push rod. A vertical rod corresponding to the number of rotating seats is fixedly connected to the bottom end of the annular track frame. Two drive blocks are fixedly connected to the outer side wall of the vertical rod, and the drive blocks slide within the drive frame.

[0012] Furthermore, an annular groove is provided at the top of the annular track frame, and an annular protrusion is slidably connected in the annular groove. The bottom end of the electric push rod is fixedly connected to the top of the annular protrusion.

[0013] Furthermore, an annular toothed plate is fixedly connected to the bottom of the base, an organic cover is fixedly installed on the outside of the main channel, a bevel gear is provided on the outside of the organic cover to mesh with the annular toothed plate, and a motor for driving the bevel gear to rotate is provided inside the organic cover.

[0014] Furthermore, the bottom end of the final cooling tower is configured as a conical surface to facilitate liquid collection. The bottom end of the final cooling tower is connected to a first connecting pipe, which is connected to the top of the liquid tank. One end of the circulating pump is connected to the inclined side wall of the liquid tank through a second connecting pipe. A grid plate is provided between the first connecting pipe and the final cooling tower.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The upper, middle, and lower branch pipes on the outer side of the main channel are arranged in a ring array, which can fully cover the inner wall and key areas of the final cooling tower. It can target and flush dirt of different heights. In the scraping component, the motor drives the scraper to rotate, and the electric push rod drives the angle deflection, allowing the scraper to adhere to the tower wall in multiple cutting directions, flexibly dealing with thick scale layers, corner residues, and other stubborn stains. The dual action of water flushing and mechanical scraping avoids the blind spots of cleaning stubborn dirt by single flushing, and the flexibility of the scraper reduces damage to the tower wall, significantly improving cleaning efficiency and effectiveness.

[0017] 2. The liquid tank of this invention stores and recovers the flushing liquid, which is then reused by the circulating pump, reducing media consumption; the conical surface at the bottom of the final cooling tower facilitates liquid convergence, and the grid plate at the pipe passage intercepts large impurities, preventing pipe blockage or circulating pump jamming and protecting core equipment. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings;

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the final cooling tower in this invention;

[0021] Figure 3 This is a schematic diagram of the scraper structure in this invention;

[0022] Figure 4 This is a schematic diagram of the linkage structure in this invention;

[0023] Figure 5 This is a schematic diagram of the rotating seat structure in this invention;

[0024] Figure 6 This is a schematic diagram of the electric actuator structure in this invention;

[0025] Figure 7 This is a schematic diagram of the annular toothed plate structure in this invention;

[0026] Figure 8 This is a schematic diagram of the annular bump structure in this invention.

[0027] Reference numerals in the attached drawings: 1. Final cooling tower; 2. Liquid tank; 3. Circulating pump; 4. Main channel; 5. Water supply pipe; 6. Branch pipe; 701. Support plate; 702. Electric push rod; 703. Base; 704. Rotating seat; 705. Connecting rod; 706. Scraper; 707. Drive frame; 708. Annular track frame; 709. Vertical rod; 710. Annular protrusion; 711. Annular toothed plate; 712. Bevel gear; 8. Machine casing; 9. Grating plate. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1: As Figures 1-8As shown, a coking indirect final cooling tower circulation flushing assembly includes a final cooling tower 1 fixed to the top of a support frame, a liquid tank 2 for storing liquid used to flush the inner wall of the final cooling tower 1 is provided below the final cooling tower 1, a circulation pump 3 is provided on one side of the liquid tank 2, and a scraping assembly for cleaning the inner wall of the final cooling tower 1 is provided inside the final cooling tower 1.

[0030] The interior of the final cooling tower 1 is equipped with a main channel 4. The bottom of the main channel 4 is closed, and the top of the main channel 4 passes through the top of the final cooling tower 1 and is connected to the water supply pipe 5. One end of the water supply pipe 5 is connected to the circulating pump 3. The main channel 4 and the inner wall of the final cooling tower 1 are fixedly connected by a crossbar.

[0031] Multiple sets of branch pipes 6 are arranged in a ring array on the outside of the main channel 4, and the branch pipes 6 are connected to the main channel 4. The branch pipes 6 extend horizontally along the radial direction of the main channel 4. There are three sets of branch pipes 6, located in the upper, middle and lower sections of the main channel 4 respectively. The nozzle at the end of each set of branch pipes 6 is 40cm away from the inner side of the tower wall to ensure that the spray range can cover the tower wall.

[0032] Example 2: The scraping assembly includes a support plate 701, an electric push rod 702, and a base 703. The support plate 701 is fixed to the outside of the main channel 4. A support frame is fitted and fixed to the outside of the main channel 4. The base 703 is fitted to the outside of the support frame, and the base 703 and the support frame are movably connected by bearings. The electric push rod 702 is symmetrically fixed to the bottom of the support plate 701. Rotary seats 704 are arranged in a ring array on the outside of the base 703.

[0033] One end of the rotating seat 704 is movably connected to the base 703 via a bearing, and the other end of the rotating seat 704 is fixedly connected to a connecting rod 705. One end of the connecting rod 705 is fixedly connected to a scraper 706. The scraper 706 is flexible and can improve its fit with the inner wall of the final cooling tower 1.

[0034] A drive frame 707 is fixedly connected to the outer side of the rotating seat 704. An annular track frame 708 is provided below the electric push rod 702. A vertical rod 709 corresponding to the number of rotating seats 704 is fixedly connected to the bottom end of the annular track frame 708. Two drive blocks are fixedly connected to the outer side wall of the vertical rod 709. The drive blocks slide within the drive frame 707.

[0035] The top of the annular track frame 708 is provided with an annular groove, and an annular protrusion 710 is slidably connected within the annular groove. The bottom end of the electric push rod 702 is fixedly connected to the top of the annular protrusion 710. Figure 8 As shown, the annular groove at the top of the annular track frame 708 has a convex cross section, which cooperates with the annular protrusion 710. The electric push rod 702 drives the annular track frame 708 to rise and fall through the annular protrusion 710 without interfering with the rotation of the annular track frame 708.

[0036] The bottom of the base 703 is fixedly connected to an annular toothed plate 711. The outer side of the main channel 4 is fixedly installed with a machine cover 8. The outer side of the machine cover 8 is provided with a bevel gear 712 that meshes with the annular toothed plate 711. The inside of the machine cover 8 is provided with a motor for driving the bevel gear 712 to rotate.

[0037] The bottom of the final cooling tower 1 is designed as a conical surface to facilitate liquid collection. The bottom of the final cooling tower 1 is connected to a through pipe 1, which is connected to the top of the liquid tank 2. One end of the circulating pump 3 is connected to the inclined side wall of the liquid tank 2 through a through pipe 2. A grid plate 9 is installed between the through pipe 1 and the final cooling tower 1. The grid plate 9 is used to intercept large impurities generated during the rinsing process to prevent them from clogging the pipes or getting stuck in components such as the circulating pump 3, which could lead to system failure.

[0038] Combining Embodiment 1 and Embodiment 2, the working principle of the present invention is as follows:

[0039] The circulating pump 3 pumps the liquid in the liquid tank 2 to the main channel 4 through the water supply pipe 5. The pressurized liquid flows vertically upward along the main channel 4, and then sprays the liquid onto the inner wall of the final cooling tower 1 through the branch pipes 6 distributed in the upper, middle and lower sections on the outside of the main channel 4, forming a targeted flushing water flow. The flushed liquid carries the dirt to the bottom of the tower and collects at the bottom conical surface of the final cooling tower 1 under the action of gravity. After preliminary filtration by the grid plate 9, it enters the liquid tank 2 to complete the circulation.

[0040] In order to further improve the cleaning effect on the inner wall of the final cooling tower 1, the motor drives the bevel gear 712 to rotate. Under the mutual cooperation of the annular toothed plate 711 and the bevel gear 712, the base 703 drives the scraper 706 to rotate through the rotating seat 704 and the connecting rod 705. The scraper 706, together with the water flow sprayed from the branch pipe 6, circulates and cleans the inner wall of the final cooling tower 1.

[0041] To improve the scraping effect of the scraper on the final cooling tower 1, the electric push rod 702 drives the annular protrusion 710 to move vertically up and down, which in turn drives the annular track frame 708 to move synchronously up and down. Since the annular protrusion 710 is slidably connected inside the annular track frame 708, it will not interfere when the scraper 706 is scraping. Therefore, when the annular track frame 708 moves up and down, it will further drive the connecting rod 705 to move synchronously up and down. The rotating seat 704 rotates around the base 703 under the action of the vertical rod 709 and the drive block. The rotating seat 704 drives the scraper 706 to deflect in real time through the connecting rod 705, thereby achieving scraping of the inner wall of the final cooling tower 1 at different angles and different cutting directions, thus improving the cleaning effect on the inner wall of the final cooling tower 1.

[0042] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A circulating flushing assembly for an indirect coking final cooling tower, comprising a final cooling tower (1) fixed to the top of a support frame, characterized in that, Below the final cooling tower (1) is a liquid tank (2) for storing liquid used to rinse the inner wall of the final cooling tower (1). A circulation pump (3) is provided on one side of the liquid tank (2). Inside the final cooling tower (1) is a scraping assembly for cleaning the inner wall of the final cooling tower (1).

2. The circulating flushing assembly for an indirect final cooling tower in coking as described in claim 1, characterized in that, The interior of the final cooling tower (1) is provided with a main channel (4). The top end of the main channel (4) passes through the top of the final cooling tower (1) and is connected to the water supply pipe (5). One end of the water supply pipe (5) is connected to the circulating pump (3). The main channel (4) and the inner wall of the final cooling tower (1) are fixedly connected by a crossbar.

3. The circulating flushing assembly for an indirect final cooling tower in coking as described in claim 2, characterized in that, The main channel (4) has multiple sets of branch pipes (6) arranged in a ring array on its outer side, and the branch pipes (6) are connected to the main channel (4).

4. The circulating flushing assembly for an indirect final cooling tower in coking as described in claim 1, characterized in that, The scraping assembly includes a support plate (701), an electric push rod (702), and a base (703). The support plate (701) is fixed to the outside of the main channel (4). A support frame is fitted and fixed to the outside of the main channel (4). The base (703) is fitted to the outside of the support frame, and the base (703) and the support frame are movably connected by bearings. The electric push rod (702) is symmetrically fixed to the bottom of the support plate (701). Rotary seats (704) are arranged in a ring array on the outside of the base (703).

5. A circulating flushing assembly for an indirect final cooling tower in coking as described in claim 4, characterized in that, One end of the rotating seat (704) is movably connected to the base (703) via a bearing, and the other end of the rotating seat (704) is fixedly connected to a connecting rod (705), and one end of the connecting rod (705) is fixedly connected to a scraper (706).

6. A circulating flushing assembly for an indirect final cooling tower in coking as described in claim 4, characterized in that, A drive frame (707) is fixedly connected to the outer side of the rotating seat (704). An annular track frame (708) is provided below the electric push rod (702). A vertical rod (709) corresponding to the number of rotating seats (704) is fixedly connected to the bottom end of the annular track frame (708). Two drive blocks are fixedly connected to the outer wall of the vertical rod (709). The drive blocks slide within the drive frame (707).

7. A circulating flushing assembly for an indirect final cooling tower in coking as described in claim 6, characterized in that, The top of the annular track frame (708) is provided with an annular groove, and an annular protrusion (710) is slidably connected in the annular groove. The bottom end of the electric push rod (702) is fixedly connected to the top of the annular protrusion (710).

8. A circulating flushing assembly for an indirect final cooling tower in coking, as described in claim 4, is characterized in that, The bottom of the base (703) is fixedly connected to an annular toothed plate (711), and an organic cover (8) is fixedly installed on the outside of the main channel (4). A bevel gear (712) that meshes with the annular toothed plate (711) is provided on the outside of the organic cover (8), and a motor for driving the bevel gear (712) to rotate is provided inside the organic cover (8).

9. A circulating flushing assembly for an indirect final cooling tower in coking as described in claim 1, characterized in that, The bottom end of the final cooling tower (1) is set as a conical surface to facilitate liquid collection. The bottom end of the final cooling tower (1) is connected to a through pipe one, and the through pipe one is connected to the top of the liquid tank (2). One end of the circulating pump (3) is connected to the inclined side wall of the liquid tank (2) through a through pipe two. A grid plate (9) is provided at the connection between the through pipe one and the final cooling tower (1).

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