Water distribution device on high-speed mixed bed

Abstract

The utility model discloses a water distribution device on a high-speed mixed bed, which comprises a water distribution plate with an arc-shaped cross section, the periphery of the water distribution plate is welded with the inner wall of a barrel, a manhole is arranged on the water distribution plate, a manhole plate is arranged at the manhole, the cross section of the manhole plate is arc-shaped and is consistent with the radian of the water distribution plate, and the size of the manhole plate is larger than that of the manhole. The manhole plate is located below the water distribution plate, a sealing gasket is arranged at the overlapped position of the manhole plate and the water distribution plate, the manhole plate and the water distribution plate are fixedly connected through a bolt, mounting holes are evenly distributed in the water distribution plate and the manhole plate, water caps are mounted in the mounting holes, and a water cap filtering part is mounted above the water distribution plate and the manhole plate. Resin is prevented from running to the upper portion of the water distribution plate and entering the water cap to block the water cap, the source of large pressure difference is eliminated, and the compression strength of the water distribution plate is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of condensate polishing treatment in chemical water treatment of power plants, and particularly relates to a water distribution device for the upper part of a high-speed mixed bed. Background Technique

[0002] The internal water collection and distribution structure and manufacturing drawings of existing domestic high-speed mixed bed equipment for condensate polishing treatment are derived from imported technologies many years ago. The water inlet 11 is located at the uppermost part of the upper head of the equipment. Corresponding to the equipment, there are a water baffle 12, a water retaining ring 13, a water distribution plate 1, a water distribution ring 14 for fixing the water distribution plate, a water distribution nozzle 3, a suspension rod 6, bolts, etc. There is also a resin inlet 15 on the upper head, and a resin baffle plate 16 is arranged below the resin pipeline, as Figure 1 shown.

[0003] Considering that the water distribution plate needs to be taken out of the equipment for maintenance, and the manhole specification of the equipment is DN500, therefore, the width of the water distribution plate generally does not exceed 400 mm. The entire water distribution plate structure inside the equipment is composed of multiple water distribution plates spliced together. Due to the limited space inside the equipment, the weight of each water distribution plate needs to ensure that at most two people can lift it. Therefore, the weight of each water distribution plate does not exceed 50 kg, so the thickness of the water distribution plate is generally 6 - 8 mm, and the thickest does not exceed 10 mm. Considering that the aspect ratio of the length and width of the water distribution plate is relatively large, it will deform under the action of external force and damage the water distribution structure. It is necessary to strengthen the structure of the water distribution plate in the length direction. In addition, the bolt 102 fixed connection between two adjacent water distribution plates also requires a certain width. Therefore, in the prior art, flat steel, angle steel, etc. with a certain width and thickness are welded on both sides of the width of the water distribution plate along the length direction of the water distribution plate. However, when welding, the water distribution plate deforms more severely, so this is generally not done. Currently, the commonly adopted method is to fold the edges 101 on both sides of the water distribution plate in the width direction. The folding height is adjusted according to the length of the water distribution plate, generally 50 - 65 mm. The measures of folding the edges on both sides of the water distribution plate in the width direction improve its strength and greatly improve its anti-deformation ability, but it also brings a very difficult problem, that is, there will be a gap 103 that is difficult to eliminate at the junction of the two water distribution plates and the water distribution ring, as Figure 2 shown. This gap is caused by the arc generated by the folded edge, rather than a vertical 90 degrees. No matter how the edges are folded, this gap can be reduced, but it will never be eliminated. The harm brought by this gap is that when the resin is transported, backwashed, and mixed in the high-speed mixed bed, the water flow will have a side flow, and the resin will enter the upper part of the water distribution plate from this gap in large quantities and accumulate in the nozzles on the water distribution plate. During operation, on the one hand, the water flow has a side flow, causing a vortex to be generated in the upper part of the resin layer, disturbing the resin layer and affecting the operation. On the other hand, the nozzles are blocked due to the accumulation of resin, resulting in a large pressure difference between the upper and lower parts of the water distribution plate, and finally causing the deformation of the water distribution plate and the destruction of the structure.

[0004] Although measures such as thickening the water distribution plate and adding suspension rods for the water distribution plate can be taken to strengthen the control of the water distribution plate, they only address the symptoms rather than the root cause and cannot solve the problem. For decades, there has been no professional in China to calculate and design the equipment structure, no one has questioned its structure, and it has been completely copied in equipment manufacturing without any changes.

[0005] Chinese Patent No. 202020496694.3 discloses an upper water distribution device for an integral high-speed mixed bed to prevent resin backflow, which includes a water distribution perforated plate, water distribution nozzles, a manhole, connecting stay bars, etc. The water distribution perforated plate is made of an integral stainless steel plate without splicing seams; the periphery of the water distribution perforated plate is directly welded to the cylinder body of the high-speed mixed bed, and connecting stay bars are arranged between the water distribution perforated plate and the upper head of the high-speed mixed bed for connection; a manhole is arranged on the water distribution perforated plate, and water distribution nozzles are also installed on the manhole cover. The manhole is oval, which is convenient for personnel to carry out rubber lining corrosion prevention, maintenance installation and manhole cover installation and disassembly on the upper part of the perforated plate of the high-speed mixed bed. However, the water distribution perforated plate is a flat plate, still having problems of insufficient pressure resistance and easy deformation; in addition, the filtering part of the water distribution nozzles is installed below the water distribution plate, and sundries will fall into the nozzles and cannot get out, and will eventually cause the filter nozzles to be blocked after long-term accumulation. Summary of the Invention

[0006] Aiming at the problems existing in the prior art that there are gaps at the junction of the water distribution plate and the water distribution ring, resulting in a large amount of resin entering the upper part of the water distribution plate from this gap and accumulating in the nozzles on the water distribution plate, the nozzles are blocked due to the accumulation of resin, causing a large pressure difference between the upper and lower parts of the water distribution plate, ultimately deforming the water distribution plate and damaging the structure, and the uneven flow of water causing vortex disturbance of the resin layer in the upper part of the resin layer, affecting the operation, etc., the present utility model provides an upper water distribution device for a high-speed mixed bed, which can prevent resin from running into the upper part of the water distribution plate and entering the nozzles to cause blockage, eliminate the root cause of the large pressure difference, and improve the pressure resistance of the water distribution plate.

[0007] The purpose of the present utility model is achieved in the following way:

[0008] An upper water distribution device for a high-speed mixed bed is installed inside the cylinder body of a high-speed mixed bed equipment, and includes a water distribution plate with an arc-shaped cross-section. The outer periphery of the water distribution plate is welded and fixed to the inner wall of the cylinder body. An inspection hole is arranged on the water distribution plate, and an inspection hole plate is arranged at the inspection hole. The cross-section of the inspection hole plate is arc-shaped and is consistent with the radian of the water distribution plate. The size of the inspection hole plate is larger than the size of the inspection hole. The inspection hole plate is located below the water distribution plate. A sealing gasket is arranged at the overlapping part of the inspection hole plate and the water distribution plate and is fixedly connected by bolts. Installation holes are evenly distributed on the water distribution plate and the inspection hole plate, and water nozzles are installed in the installation holes. The filtering part of the water nozzles is installed above the water distribution plate and the inspection hole plate.

[0009] The inspection hole plate is located at the center of the water distribution plate.

[0010] A debris collection hopper is provided on the lower surface of the lowest point of the arc-shaped water distribution plate. A pipe is connected below the debris collection hopper and extends outside the cylinder.

[0011] A debris collection hopper is provided on the lower surface of the center of the inspection orifice plate. A pipe is connected below the debris collection hopper and extends outside the cylinder.

[0012] Ring steel plates are provided at the overlapping parts of the water distribution plate and the inspection orifice plate.

[0013] The shape of the inspection orifice plate is circular, square or oval.

[0014] Suspension rods are provided between the water distribution plate and the upper head of the cylinder, and the suspension rods are evenly distributed.

[0015] Compared with the prior art, the utility model uses a whole water distribution plate welded to the inner wall of the cylinder, fundamentally eliminating the gaps when the water distribution plate is fixed to the cylinder and when the water distribution plates are connected to each other. This prevents resin from running above the water distribution plate and entering the water cap, thus avoiding blockage and eliminating the root cause of large pressure differences. The water distribution plate is not made up of multiple plates spliced together, so there are no splicing gaps, and it has good integrity. Moreover, the arc-shaped water distribution plate has strong pressure resistance and is not easily deformed or damaged. A sealing gasket is provided at the overlapping part of the inspection orifice plate and the water distribution plate, and they are fixedly connected by bolts, ensuring good sealing performance. Resin will not enter above the water distribution plate through this connection, which is beneficial to the long-term stable operation of the equipment. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the water distribution device on the high-speed mixed bed in the prior art.

[0017] Figure 2 is a schematic structural diagram of the junction of two water distribution plates and the water distribution ring in the prior art.

[0018] Figure 3 is a schematic structural diagram of the utility model.

[0019] Figure 4 is a schematic structural diagram of the water distribution plate. Detailed Embodiments

[0020] The following further elaborates the utility model in conjunction with the drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and not to limit the scope of the utility model. After reading the content of the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the utility model.

[0021] As Figure 3 、 Figure 4As shown in the figure, the water distribution device of the high-speed mixed bed is installed inside the cylinder body 10 of the high-speed mixed bed equipment. The cylinder body 10 includes an upper head. The water inlet is installed at the top of the upper head. A water distribution plate 1 is arranged at the top of the cylinder body 10. The cross-sectional shape of the water distribution plate 1 is arc-shaped. The outer periphery of the water distribution plate 1 is fixedly connected to the inner wall of the cylinder body by welding. A maintenance hole is provided on the water distribution plate 1. A maintenance hole plate 2 is arranged at the maintenance hole. The cross-sectional shape of the maintenance hole plate 2 is arc-shaped, which is consistent with the radian of the water distribution plate 1. The size of the maintenance hole plate 2 is larger than that of the maintenance hole. The maintenance hole plate 2 is located below the water distribution plate 1. A sealing gasket is arranged at the overlapping part of the maintenance hole plate 2 and the water distribution plate 1 and is fixedly connected by bolts. Installation holes are evenly distributed on the water distribution plate 1 and the maintenance hole plate 2. A water cap 3 is installed in the installation holes. The filtering part of the water cap 3 is installed above the water distribution plate 1 and the maintenance hole plate 2.

[0022] The water distribution plate 1 is welded to the inner wall of the cylinder body, fundamentally eliminating the gap when the water distribution plate is fixed to the cylinder body. In this way, the resin will no longer run to the upper part of the water distribution plate and enter the water cap, causing blockage, and eliminating the root cause of the large pressure difference. The water distribution plate does not adopt multiple plates spliced together, has no splicing gap, has good integrity, strong pressure resistance ability, and is not easy to deform and damage. A sealing gasket is arranged at the overlapping part of the maintenance hole plate 2 and the water distribution plate 1 and is fixedly connected by bolts, with good sealing performance, and the resin will not enter above the water distribution plate through this connection part.

[0023] The cross-sectional shapes of the water distribution plate 1 and the maintenance hole plate 2 are arc-shaped. Compared with the flat water distribution plate, when the thickness is the same, the arc-shaped plate has higher pressure resistance strength and can resist the pressure difference between the upper and lower parts of the water distribution plate caused by other sundries.

[0024] The filtering part of the water cap 3 is installed above the water distribution plate 1 and the maintenance hole plate 2, which is exactly the opposite of the traditional installation. In this way, even if there are sundries in the water entering the upper part of the water distribution plate 1, they generally stay on the water distribution plate and will not fall into the water cap 3, causing blockage of the water cap 3 and an increase in the pressure difference of the water cap.

[0025] The water distribution plate of the high-speed mixed bed divides the space above the resin layer in the cylinder body into two upper and lower spaces. Considering the lining rubber anti-corrosion construction of the two spaces, a maintenance hole is dug on the water distribution plate. The water distribution plate is fixedly connected to the equipment cylinder body by welding. A circular steel plate is provided for reinforcement at its inner edge, and fixing nuts are preset. The maintenance hole plate 2 is a movable part, and a circular steel plate is also provided for reinforcement at its outer edge, and fixing bolt holes are preset. A sealing gasket (acid-resistant rubber or polytetrafluoroethylene plate) is also arranged at the overlapping part of the two (i.e., the circular steel plate part) and is fixedly connected by bolts. The maintenance hole plate 2 is convenient for disassembly and is also hermetically connected to the water distribution plate to prevent the resin from flowing upwards.

[0026] The inspection orifice plate 2 is located at the center of the water distribution plate 1. It is set at the center and is equidistant from the center to all around, which is convenient for maintenance and repair. It is also convenient for the possible sundries on the water distribution plate to move towards the center of the inspection orifice plate. During maintenance, the sundries can be cleared by disassembling the inspection orifice plate. The shape of the inspection orifice plate 2 is preferably circular, and it can also be square or oval. The oval can be a common oval, or an oblong oval with a rectangle in the middle and semi - circles at both ends. Of course, it can also be any other shape as long as it is convenient for maintenance and repair personnel to operate through the inspection orifice.

[0027] Furthermore, openings are made at the lowest part of the arc - shaped water distribution plate 1. A sundries collection hopper 4 is arranged on the lower surface of the water distribution plate 1, which is connected to the above - mentioned openings, and a connecting pipe 41 is connected below the sundries collection hopper 4 and extends outside the cylinder. The sundries accumulated on the water distribution plate move towards the lowest part of the arc, which is convenient for entering the sundries collection hopper for collection and discharging outside the cylinder. A more preferable solution is that the inspection orifice plate 2 is located at the center of the water distribution plate 1, and a sundries collection hopper 4 is arranged on the lower surface of the center of the inspection orifice plate 2. A connecting pipe 41 is connected below the sundries collection hopper 4 and extends outside the cylinder. The sundries collection hopper 4 is arranged on the lower surface of the center of the inspection orifice plate 2 and is disassembled together with the inspection orifice plate, which is convenient for cleaning. Further, a valve is installed on the pipe extending outside the cylinder, and the valve can be regularly opened to flush the sundries on the water distribution plate 1 and the inspection orifice plate 2 out of the equipment body, reducing the pressure difference above and below the water distribution plate 1. The shell of the sundries collection hopper 4 can be made of steel, and the connecting device between the lower part of the sundries collection hopper and the pipe 41 can adopt detachable movable connections such as flange connection, clamp connection, or threaded union, which is convenient for disassembly and cleaning.

[0028] A manhole 5 is arranged at the upper part of the cylinder, and the manhole 5 is located below the water distribution plate 1. In this way, maintenance and repair personnel can enter the cylinder from the manhole 5, disassemble the inspection orifice plate 2 on the water distribution plate 1, and then put their heads or bodies above the water distribution plate 1. They can operate as upright as possible, which is more comfortable.

[0029] Suspension rods 6 are arranged between the water distribution plate 1 and the upper head of the cylinder. Both ends of the suspension rods 6 are welded to the upper head of the cylinder and the water distribution plate respectively. The suspension rods 6 are evenly distributed on the water distribution plate. It is preferably 4 - 6 suspension rods to ensure uniform force. The setting of the suspension rods 6 improves the mechanical strength of the water distribution plate 1, with a firm structure, strong adaptability to pressure changes, and not easily damaged by pressure impact and deformation.

[0030] The water distribution plate 1 and the suspension rods 6 are made of S30408, S31603 or Q235B with double - sided rubber lining, and the bolts are made of S31603 material.

[0031] When applying rubber lining anticorrosion construction to the upper space of the water distribution plate, the operator needs to put the upper part of the body, head and shoulders into the upper space of the water distribution plate. Considering that the actual position of the water baffle at the water inlet of the equipment is very close to the water distribution plate, it is best to make the water baffle in a movable form and connect the water baffle to the flat steel or round bar used for fixing the water baffle together with bolts. The resin pipeline is connected to the water distribution plate by welding.

[0032] Through the above design optimization, the reason for the large pressure difference caused by resin leakage from the water distribution plate 1 is fundamentally eliminated, and the problem of resin running up above the water distribution plate and causing water cap blockage will no longer occur. Moreover, the water distribution plate and the suspension rod can adopt the Q235B double-sided rubber lining material, and the cost also drops a lot, saving about 36% of the cost.

[0033] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those skilled in the art, without departing from the overall concept of the present utility model, several changes and improvements can still be made, and these should also be regarded as the protection scope of the present utility model.

Claims

1. A water distribution device for a high-speed mixed bed, which is installed inside the cylinder of a high-speed mixed bed equipment, and is characterized in that: It includes a water distribution plate (1) with an arc-shaped cross-section. The outer periphery of the water distribution plate (1) is welded and fixed to the inner wall of the cylinder. There is an inspection hole on the water distribution plate (1), and an inspection hole plate (2) is provided at the inspection hole. The cross-section of the inspection hole plate (2) is arc-shaped and is consistent with the radian of the water distribution plate (1). The size of the inspection hole plate (2) is larger than that of the inspection hole. The inspection hole plate (2) is located below the water distribution plate. A sealing gasket is provided at the overlapping part of the inspection hole plate (2) and the water distribution plate and is fixedly connected by bolts. Installation holes are evenly distributed on the water distribution plate (1) and the inspection hole plate (2), and water caps (3) are installed in the installation holes. The filtering part of the water cap (3) is installed above the water distribution plate (1) and the inspection hole plate (2).

2. The water distribution device at the upper part of the high-speed mixed bed according to claim 1, wherein: The inspection hole plate (2) is located at the center of the water distribution plate (1).

3. The water distribution device at the upper part of the high-speed mixed bed according to claim 1, characterized in that: A debris collection hopper (4) is provided on the lower surface of the lowest part of the arc-shaped water distribution plate. A pipe (41) is connected below the debris collection hopper (4) and extends outside the cylinder.

4. The upper water distribution device of the high-speed mixed bed according to claim 2, characterized in that: A debris collection hopper (4) is provided on the lower surface of the center of the inspection hole plate (2). A pipe (41) is connected below the debris collection hopper (4) and extends outside the cylinder.

5. The water distribution device at the upper part of the high-speed mixed bed according to claim 1, characterized in that: Ring steel plates are provided at the overlapping parts of the water distribution plate (1) and the inspection hole plate (2).

6. The water distribution device at the upper part of the high-speed mixed bed according to claim 1 or 4, characterized in that: The shape of the inspection hole plate (2) is circular, square or oval.

7. The water distribution device for the upper part of the high-speed mixed bed according to claim 1, characterized in that: Suspension rods (6) are provided between the water distribution plate (1) and the upper head of the cylinder, and the suspension rods (6) are evenly distributed.

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