Water inlet perforated plate protection assembly for ion exchanger

Abstract

The invention discloses a water inlet perforated plate protection assembly for an ion exchanger, and belongs to the field of condensed water precision treatment.The water inlet perforated plate protection assembly comprises a perforated plate installed in an exchanger, the perforated plate is formed by connecting a plurality of porous pieces, reinforcing ribs are arranged at the bottoms of the porous pieces, a telescopic hanging rod is arranged at the top of the perforated plate, and the telescopic hanging rod is connected with the perforated plate. The top and the bottom of the telescopic suspender are respectively connected with the top of the perforated plate and the top of the inner cavity of the exchanger; a perforated plate buffering system composed of the telescopic suspender assembly and the metal buffering net plays a good buffering role when the perforated plate operates under positive pressure and negative pressure, and the perforated plate reinforcing ribs are combined and spliced, so that the stress performance of the whole plate is greatly enhanced, the impact influence of a water hammer is remarkably reduced, the perforated plate is not prone to deformation, stable operation of the ion exchanger is ensured, and the service life of the ion exchanger is prolonged. And meanwhile, each tank body is provided with four sets of telescopic suspender assemblies which are uniformly distributed in a 1 / 2D inner circle, so that the stress balance of the perforated plate is ensured, and the deformation of the perforated plate during the negative pressure operation of the ion exchanger is effectively reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of condensate polishing, and in particular relates to a water inlet porous plate protection component for an ion exchanger. Background Art

[0002] The condensate polishing system is of great significance to ensure the water quality of the secondary circuit, reduce equipment corrosion and scaling, save desalted water and maintain the normal operation of the unit. However, there are design defects in the internal water inlet device of the ion exchanger, which leads to uneven water distribution and bias flow, which in turn causes the ion exchanger to have excessive effluent quality, a sharp drop in periodic water production, and even failure to operate normally. At the same time, the water hammer impact generated by the condensate pump during the start-stop, switching, and tripping processes will cause the porous plate of the water inlet device to deform, further exacerbating the increase in the gap between the joint surfaces of the porous inlet plate and the bias flow problem, seriously threatening the safe and stable operation of the system. Summary of the invention

[0003] The object of the present invention is to provide a water inlet porous plate protection component for an ion exchanger to solve the problem of deformation of the porous plate under pressure.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an inlet porous plate protection assembly for an ion exchanger, comprising a porous plate installed in the exchanger, wherein the porous plate is formed by connecting a plurality of porous parts, and the bottoms of the plurality of porous parts are provided with reinforcing ribs, and a retractable suspension rod is provided on the top of the porous plate, and the top and bottom of the retractable suspension rod are respectively connected to the top of the porous plate and the top of the inner cavity of the exchanger, and the retractable suspension rod comprises an upper section, a middle section and a lower section, the upper section and the lower section adopt a fixed rod, and the middle section adopts a spring, and a plurality of retractable suspension rods are provided, and the plurality of retractable suspension rods are evenly distributed on the inner circle of the exchanger, and a plurality of metal buffer nets are provided inside the exchanger.

[0005] Furthermore, the porous plate is provided with a plurality of openings, and a water inlet cap is installed at each of the openings.

[0006] Furthermore, the wire gap of the water inlet cap is mm.

[0007] Furthermore, the connection points of the plurality of porous members are fixed with bolts, and the joint gaps between the plurality of porous members are less than 0.5 mm.

[0008] Furthermore, the lengths of the upper section, the middle section and the lower section are the same, and the elastic coefficient of the middle section is 100 N / m.

[0009] Furthermore, the metal buffer mesh is arranged perpendicularly to the reinforcing ribs.

[0010] Furthermore, both sides of a plurality of the metal buffer nets are installed above the porous plate through fixing ear plates.

[0011] Furthermore, the bottom of the metal buffer screen is arranged in contact with the top of the porous plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The porous plate protection component for water inlet of the ion exchanger has a porous plate buffer system composed of a retractable hanger assembly and a metal buffer net, which plays a good buffering role when the porous plate is operated under positive pressure and negative pressure. Combined with the spliced ​​porous plate reinforcement ribs, the stress performance of the whole plate is greatly enhanced, and the impact of water hammer is significantly reduced, so that the porous plate is not easily deformed, ensuring the stable operation of the ion exchanger. At the same time, each tank body is equipped with four sets of retractable hanger assemblies evenly distributed on the 1 / 2D inner circle to ensure balanced stress on the porous plate and effectively reduce the deformation of the porous plate when the ion exchanger is operated under negative pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of a water inlet porous plate protection assembly for an ion exchanger;

[0015] Figure 2 for Figure 1 Top view of the metal buffer mesh and the porous plate;

[0016] Figure 3 for Figure 1 Bottom view of the middle reinforcement and the porous plate;

[0017] Figure 4 It is a schematic diagram of the structure of the connection between porous parts;

[0018] Figure 5 Schematic diagram of the retractable boom located at 1 / 2D of the exchanger.

[0019] In the figure: 1, exchanger; 2, water inlet pipe; 3, water retaining ring; 4, water retaining plate; 10, porous plate; 101, opening; 110, porous part; 120, water inlet cap; 130, reinforcing rib; 20, retractable suspension rod; 30, metal buffer net; 310, fixed ear plate. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the embodiments.

[0021] The following examples are used to illustrate the present invention, but they cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions. Simple improvements to the method of the present invention under the premise of the concept of the present invention belong to the scope of protection claimed in the present invention.

[0022] See also Figure 1-5The present invention provides a water inlet porous plate protection component for an ion exchanger, comprising a porous plate 10 installed in an exchanger 1, wherein the porous plate 10 is provided with a plurality of openings 101, and a water inlet cap 120 is installed at each of the openings 101, and the wire gap of the water inlet cap 120 is 0.4 mm; currently, the resin particle size at home and abroad is mainly distributed in the range of 0.4 to 0.7 mm, and after the wire gap of the water inlet cap 120 is selected to be 0.4 mm, the problem of resin back-inhalation caused by the load change of the unit can be effectively dealt with, thereby ensuring the water quality of the unit.

[0023] The porous plate 10 is formed by connecting six porous parts 110, and the six porous parts 110 are connected to form a circular porous plate 10. The six porous parts 110 are fixed at the connection by bolts, and the splicing gap between the six porous parts 110 is set within 0.5mm, which greatly increases the service life of the water inlet porous plate.

[0024] The bottom of each of the six porous members 110 is provided with a reinforcing rib 130 .

[0025] A retractable suspension rod 20 is arranged on the top of the porous plate 10, and the top and bottom of the retractable suspension rod 20 are respectively connected to the top of the porous plate 10 and the top of the inner cavity of the exchanger 1. The retractable suspension rod 20 has the characteristic of longitudinal elastic deformation, and the material can be selected according to the inlet water quality. It is suitable for various water quality working conditions, which greatly increases the service life of the retractable suspension rod assembly. Each exchanger 1 is equipped with four sets of retractable suspension rods 20, which are evenly distributed on the 1 / 2D inner circle of the exchanger 1.

[0026] The telescopic boom 20 is divided into three sections: upper, middle and lower. The upper and lower sections are fixed rods, and the middle section is spring-loaded. When the boom is operated under the most unfavorable working conditions, the elasticity of the middle section acts as a buffer for the entire boom through its telescopic characteristics.

[0027] The following experiments were performed using a DN300 exchanger:

[0028]

[0029]

[0030] Table 1

[0031] The optimal structural length ratio of the telescopic hanger 2 (upper hanger length: middle elastic structure length: lower hanger length) = 1:1:1. When the telescopic hanger 2 is designed according to this length ratio, the force on the hanger assembly is most uniform under the most unfavorable working condition, and the buffering effect on the porous plate 10 is the best. As the control group, two groups of comparative experiments with structural length ratios of 2:1:2 and 1:2:1 showed insufficient telescopic deformation or poor buffering effect on the water inlet porous plate when simulating water inflow under the most unfavorable working condition.

[0032] The optimal elastic coefficient of the middle elastic structure in the telescopic hanger 2 is 100N / m. The elastic structure with this elastic coefficient can ensure the best elastic deformation of the telescopic hanger 2 under various operating conditions, and the buffering effect on the water inlet porous plate 10 is the best. It will not cause problems such as structural failure of the telescopic hanger 20 and poor buffering effect due to too small or too large elastic deformation. In two groups of comparative experiments with elastic coefficients of 50N / m and 200N / m, the middle elastic structure with 50N / m and 200N / m both resulted in problems such as insufficient telescopic amount of the telescopic hanger assembly, ineffective telescopic amount, and excessive telescopic amount.

[0033] The optimal distribution diameter of the telescopic hanger on the plane layout of the porous plate 10 is 1 / 2D, where D is the diameter of the ion exchanger. The use of 1 / 2D diameter uniformly distributed telescopic hangers is the optimal force moment of the porous plate, and the deformation of the porous plate 10 is the smallest under the most unfavorable working condition. For details, see the attached Figure 5 3 / 4D and 1 / 3D diameters were uniformly distributed as comparative experiments, and the torque of the porous plate 10 subjected to water inflow was too large. The porous plate 10 showed different deformations at positions exceeding the torque.

[0034] A plurality of metal buffer nets 30 are radially arranged inside the exchanger 1. The plurality of metal buffer nets 30 are located on the reinforcing ribs 130 and are arranged perpendicular to each other. Both sides of the plurality of metal buffer nets 30 are installed above the porous plate 10 through fixed ear plates 310. The bottom of the metal buffer net 30 can be arranged in contact with the top of the porous plate 10. The metal buffer net 30 is used to prevent the porous plate 10 from deforming upward.

[0035] The above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the embodiments of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description, and these obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. A porous plate protection assembly for an ion exchanger, comprising a porous plate (10) installed in an exchanger (1), characterized in that: The porous plate (10) is formed by connecting a plurality of porous members (110), the bottoms of the plurality of porous members (110) are all provided with reinforcing ribs (130), the top of the porous plate (10) is provided with a retractable suspension rod (20), the top and bottom of the retractable suspension rod (20) are respectively connected to the top of the porous plate (10) and the top of the inner cavity of the exchanger (1), the retractable suspension rod (20) comprises an upper section, a middle section and a lower section, the upper section and the lower section adopt a fixed rod, the middle section adopts a spring, a plurality of retractable suspension rods (20) are provided, and the plurality of retractable suspension rods (20) are evenly distributed on the inner circle of the exchanger (1), and a plurality of metal buffer nets (30) are provided inside the exchanger (1).

2. The water inlet porous plate protection assembly for an ion exchanger according to claim 1, characterized in that: The porous plate (10) is provided with a plurality of openings (101), and a water inlet cap (120) is installed outside each of the plurality of openings (101).

3. The water inlet porous plate protection assembly for an ion exchanger according to claim 2, characterized in that: The wire winding gap of the water inlet cap (120) is (0.4) mm.

4. The water inlet porous plate protection assembly for an ion exchanger according to claim 1, characterized in that: The connection points of the plurality of porous members (110) are fixed by bolts, and the joint gaps between the plurality of porous members (110) are less than 0.5 mm.

5. The water inlet porous plate protection assembly for an ion exchanger according to claim 1, characterized in that: The lengths of the upper section, the middle section and the lower section are the same, and the elastic coefficient of the middle section is 100 N / m.

6. The water inlet porous plate protection assembly for an ion exchanger according to claim 1, characterized in that: The metal buffer nets (30) are located on the reinforcing ribs (130) and are arranged perpendicular to each other.

7. The water inlet porous plate protection assembly for an ion exchanger according to claim 1, characterized in that: Both sides of a plurality of the metal buffer nets (30) are installed above the porous plate (10) via fixing ear plates (310).

8. The water inlet porous plate protection assembly for an ion exchanger according to claim 7, characterized in that: The bottom of the metal buffer net (30) is arranged in contact with the top of the porous plate (10).

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