Plugboard type large-flow-channel bottom flushing type drainer

Abstract

The utility model belongs to the technical field of converter drainage devices, and relates to an inserting plate type large-flow-channel bottom flushing type drainer which comprises a base, a W-shaped bent pipe is arranged at the top of the base, a water inlet pipe is arranged on one side of the top of the W-shaped bent pipe, a connecting flange is arranged at the tail end of the water inlet pipe, and a drainage opening is formed in the other side of the top of the W-shaped bent pipe in a downward bending mode. The water outlet inclines outwards by 45 degrees, a supporting rod is arranged at the bottom of the water outlet and is connected with a W-shaped bent pipe, a pressure relief opening is formed in the W-shaped bent pipe, blow-off pipes are arranged on the left side and the right side of the bottom of the W-shaped bent pipe, and a water replenishing flushing pipe is arranged on the front side of the bottom of the W-shaped bent pipe and is connected to the bottom of the W-shaped bent pipe through a connecting pipe. According to the utility model, the flushing is recycled, the water consumption is reduced, the water discharge of the pipeline is increased, the water content of coal gas during coal gas recovery is reduced, and the water content of a coal gas user side is also reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of converter drainage devices, specifically relating to a bottom flushing drainer with a large flow channel and a slide plate. Background Technology

[0002] In the metallurgical industry, especially in steelmaking, the design of flue gas treatment and drainage systems is of paramount importance. Traditional drainage and dust removal systems rely on gravity discharge, which limits their application and treatment efficiency. Taking a steel plant as an example, its gas recovery system, which has been in operation since 2003, uses OG wet dust removal. However, after many years of use, it no longer meets the needs due to increasingly stringent environmental regulations and changing process requirements.

[0003] The gas recovery system at this plant has a design flaw in the pipeline from the three-way valve to the water-sealed check valve in the positive pressure zone. This results in the lowest point of the pipeline being only 640mm above the ground, which not only restricts the smoothness of drainage but may also cause backflow of wastewater during discharge, thus seriously affecting the safety of the smelting process and environmental protection.

[0004] To improve this situation, engineers welded a 1300mm (12.7kPa) long, DN150 diameter circular pipe under the main pipeline and inserted it into a collection well approximately 1000mm long, 1600mm wide, and 1600mm deep for wastewater discharge. However, with continuous updates to technology and standards, the original design no longer met safety standards and was deemed a major safety hazard.

[0005] In order to adapt to new environmental protection requirements and improve drainage efficiency and safety, a plate-type large flow channel bottom flushing drain is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a plate-type bottom flushing drain with a large flow channel, which has the function of bottom flushing and draining of the large flow channel, and solves the problem that the water seal height of the existing technology does not meet the specifications.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a plate-type large flow channel bottom flushing drain, including a base, a W-shaped bend pipe at the top of the base, a water inlet pipe at one end of the top of the W-shaped bend pipe, a drain outlet at the other end of the top of the W-shaped bend pipe bent downwards, sewage pipes on the left and right sides of the bottom of the W-shaped bend pipe, and a water replenishment flushing pipe at the front of the bottom of the W-shaped bend pipe, which is connected to the bottom of the W-shaped bend pipe through a connecting pipe.

[0008] Preferably, the inlet pipe, the drain pipe and the side of the water replenishment and flushing pipe are provided with connecting flanges.

[0009] Preferably, the drain outlet is inclined outward at 45°, and a support rod is provided at the bottom of the drain outlet to connect to a W-shaped bend pipe.

[0010] Preferably, the W-shaped bend is provided with a pressure relief port.

[0011] Preferably, the water replenishment flushing pipe is equipped with a U-shaped seal, a one-way valve, and a ball valve.

[0012] Preferably, the connecting pipe consists of two main pipes, with several branch pipes extending from the main pipes and connecting to both sides of the bottom bend of the W-shaped bend pipe.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. This utility model uses flushing and recycling, which reduces water consumption, increases pipeline drainage, reduces the water content of gas during gas recovery, and also reduces the water content at the gas user end.

[0015] 2. This utility model has a bottom flushing and drainage function for a large flow channel, which solves the problem that the water seal height of the existing technology does not meet the specifications. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A side view of a plate-type, large-channel, bottom-flushing drain;

[0018] Figure 2 A top view of a plate-type, large-channel, bottom-flushing drain;

[0019] Figure 3 A front view of a plate-type, large-channel, bottom-flushing drain;

[0020] In the above diagrams, 1 is the water inlet pipe, 2 is the connecting flange, 3 is the W-shaped bend pipe, 4 is the drain outlet, 5 is the support rod, 6 is the pressure relief port, 7 is the base, 8 is the sewage pipe, 9 is the connecting pipe, and 10 is the water replenishment and flushing pipe. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1, such as Figure 1-3 As shown, a plate-type large-channel bottom flushing drain includes a base 7, which is the basic structure responsible for support and load-bearing, supporting the entire drainage system and ensuring the stability of the drain. A well-designed base 7 also facilitates installation and transportation. A W-shaped bend pipe 3 is installed at the top of the base 7. The W-shaped bend pipe 3 guides the flow of sewage and flushing water, effectively increasing the residence time of the fluid within the pipe, facilitating the dehydration and separation of flue gas and dust, thereby improving the flushing effect and drainage capacity.

[0024] A water inlet pipe 1 is installed at one end of the top of the W-shaped bend pipe 3. The water inlet pipe 1 is used to introduce water into the W-shaped bend pipe 3 system to activate the bottom flushing function for flue gas dust dehydration and separation. During this process, a large amount of water and sludge will be discharged. The other end of the top of the W-shaped bend pipe 3 is bent downwards and has a drain outlet 4, which is used to discharge the treated water. Sewage pipes 8 are installed on the left and right sides of the bottom of the W-shaped bend pipe 3. The sewage pipes 8 are used to discharge the deposited sludge, which can efficiently collect and discharge sewage and reduce treatment time. A water replenishment flushing pipe 10 is installed on the front side of the bottom of the W-shaped bend pipe 3. The water replenishment flushing pipe 10 is used to supply clean water to the W-shaped bend pipe 3 for periodic flushing. The water replenishment flushing pipe 10 is connected to the bottom of the W-shaped bend pipe 3 through a connecting pipe 9. The connecting pipe 9 delivers clean water to the bottom of the W-shaped bend pipe 3 to flush the sludge deposited at the bottom, which can then be discharged from the sewage pipe 8.

[0025] The specific design of the aforementioned key components will be discussed in detail below:

[0026] A connecting flange 2 is provided at the end of the water inlet pipe 1, the sewage pipe 8, and one side of the water replenishment and flushing pipe 10. The connecting flange 2 facilitates the connection of the water inlet pipe 1, the sewage pipe 8, and the water replenishment and flushing pipe 10 to external pipes, provides a strong connection, enables the components to withstand high pressure, and facilitates installation and disassembly.

[0027] The drain outlet 4 is inclined outward at 45°. This 45° outward inclination helps to ensure smooth drainage and prevents blockage and backflow. A support rod 5 is provided at the bottom of the drain outlet 4 to connect to the W-shaped bend pipe 3. The support rod 5 is used to support the drain outlet 4 and ensure stability during use.

[0028] The W-shaped bend pipe 3 is provided with a pressure relief port 6, which is used to release excess pressure inside the W-shaped bend pipe 3, ensure safe operation, prevent pipe rupture or leakage due to excessive pressure, and improve safety.

[0029] The water supply flushing pipe 10 is equipped with a U-shaped seal, a one-way valve, and a ball valve. The U-shaped seal prevents backflow of water or the entry of external gas, ensuring the system's internal sealing. The one-way valve ensures that water flows in only one direction, preventing flushing water from flowing back to the water supply source. The ball valve is used to regulate and control the water flow rate in the water supply flushing pipe 10, facilitating operation as needed.

[0030] The connecting pipe 9 consists of two main pipes, from which several branch pipes extend to both sides of the bottom bend of the W-shaped bend pipe 3. Combining the main pipes with multiple branch pipes enhances flushing flexibility, optimizes water flow paths, reduces flow resistance, and simultaneously flushes the bottom bends of multiple W-shaped bend pipes 3. The water replenishment flushing pipe is flushed for 10 minutes every hour, effectively removing high-pressure gas and agitating the sludge at the bottom to prevent scaling.

[0031] After one year of operation, the system has been deployed to the drainers of all positive pressure gas pipelines in both the first-stage OG wet dust collector and the second-stage LT dry electrostatic precipitator, totaling 15 units (9 units in the first stage and 6 units in the second stage). Through operational monitoring, the following results have been achieved:

[0032] (i) It effectively solved the problem of water seal height not meeting the specifications;

[0033] (ii) Through post-use tracking, when the drain valve is opened, there is less mud accumulation in each compartment of the drainer, reducing the need for staff to regularly replenish water, vent air and drain the drainer.

[0034] (iii) After the water is discharged into the storage tank through the pipeline, it is then supplied to the bottom of the drainer by a high-pressure pump for flushing and recycling, which reduces water consumption;

[0035] (iv) Increased pipeline drainage volume reduced the water content of gas during gas recovery, and also reduced the water content at the gas user end.

[0036] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A slide-type large-channel bottom-flushing drain, characterized in that, The device includes a base, a W-shaped bend pipe at the top of the base, a water inlet pipe at one end of the top of the W-shaped bend pipe, a drain outlet at the other end of the top of the W-shaped bend pipe that bends downwards, sewage pipes on the left and right sides of the bottom of the W-shaped bend pipe, and a water replenishment and flushing pipe at the front of the bottom of the W-shaped bend pipe, which is connected to the bottom of the W-shaped bend pipe via a connecting pipe.

2. The insert-type large-channel bottom flushing drain according to claim 1, characterized in that, The inlet pipe, the drain pipe and the side of the water replenishment flushing pipe are equipped with connecting flanges.

3. The insert-type large-channel bottom flushing drain according to claim 1, characterized in that, The drain outlet is inclined outward at 45°, and a support rod is provided at the bottom of the drain outlet to connect to a W-shaped bend pipe.

4. The insert-type large-channel bottom flushing drain according to claim 1, characterized in that, The W-shaped bend is equipped with a pressure relief port.

5. The insert-type large-channel bottom flushing drain according to claim 1, characterized in that, The water replenishment and flushing pipe is equipped with a U-shaped seal, a one-way valve, and a ball valve.

6. The slide-type large-channel bottom flushing drain according to claim 1, characterized in that, The connecting pipe consists of two main pipes, from which several branch pipes extend to connect to both sides of the bottom bend of the W-shaped bend pipe.

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