CN218689555U - A device for preventing resin leakage when the row device in the anode regeneration tower fails - Google Patents

Abstract

The utility model relates to the technical field of resin regeneration towers, and relates to a device for preventing resin leakage when a middle row device of a positive regeneration tower fails, including a positive regeneration tower and a middle row device arranged in the positive regeneration tower, and the middle row device includes a main pipe and a middle row device. A number of branch pipes connected to the flange of the main pipe. The main pipe of the middle row device extends to the outside of the positive regeneration tower and is fixedly connected with the side wall of the positive regeneration tower. The net is composed of a dense filter unit and a coarse filter unit located on both sides of the dense filter unit. The outer end of the main pipe of the middle row device is connected with the regeneration liquid pipeline and the middle row pipeline. When the positive tower middle row device fails, it can be timely and effectively It can effectively prevent further resin leakage, avoid economic loss caused by large amount of resin leakage, decrease of mixed bed cycle water production and environmental pollution.

Description

A device for preventing resin leakage when the row device in the anode regeneration tower fails

technical field

The utility model relates to a device for preventing resin leakage when a row device in a positive regeneration tower fails, and belongs to the technical field of resin regeneration towers.

Background technique

A power plant condensate polishing system adopts a medium-pressure condensate mixed bed system. After the mixed bed resin fails, a three-tower in vitro regeneration system is used. The resin regeneration system consists of a separation tower, a negative regeneration tower, a positive regeneration tower, a compressed air storage tank, and waste water. Composed of resin trap and acid-base metering unit.

After the cation resin in the separation tower is sent to the yang tower, the cation resin is scrubbed by the bottom air intake and the bottom water is backwashed until the effluent is clear. Then enter the acid from the upper part of the resin for regeneration, replacement and rinsing, and after the regeneration of the resin in the negative tower is qualified, the negative resin is sent to the positive tower to be mixed with the positive resin to become a spare resin.

During the resin regeneration process, due to the strong corrosiveness of hydrochloric acid, the middle discharge device in the positive tower is easily corroded as the acid feed carrier, and cracks are easy to open at the connection between the branch pipe of the middle discharge device and the main pipe, and the resulting gap not only makes the regenerated acid liquid distribution uneven It is uniform and can leak complete resin particles, resulting in a large amount of resin in the regeneration tower overflowing through the cracks in the middle row device and lost during the regeneration process. In the existing technology, when there is no replacement of spare parts in the positive tower middle row device, and there is corrosion and damage, the resin cannot be retained, resulting in a large amount of resin leakage, resulting in economic losses, a serious drop in the water production volume of the mixed bed cycle, and environmental pollution accidents.

Utility model content

In order to solve the above-mentioned problems in the prior art, the utility model provides a device for preventing resin leakage when the row device in the anode regeneration tower fails.

The technical scheme of the utility model is as follows:

A device for preventing resin leakage when the middle row device of a positive regeneration tower fails, including a positive regeneration tower and a middle row device arranged in the positive regeneration tower, and the middle row device includes a main pipe and several pipes connected to the main pipe. The branch pipe connected with blue, the main pipe of the middle row device extends to the outside of the positive regeneration tower and is fixedly connected with the side wall of the positive regeneration tower, the outer end of the main pipe of the middle row device is provided with a leak-proof filter screen, the The anti-leakage filter screen is composed of a dense filter unit and a coarse filter unit located on both sides of the dense filter unit, and the outer end of the main pipe of the middle row device is connected with a regeneration liquid inlet pipeline and a middle row pipeline.

Wherein, the dense filter unit includes a dense filter screen and a dense filter screen frame, and the coarse filter unit includes a coarse filter screen and a coarse filter screen frame.

Wherein, the coarse filter frame is provided with a fitting groove toward the side of the dense filter frame.

Wherein, the peripheral outer wall of the dense filter screen frame is provided with a sealing lip, and a U-shaped sealing ring is nested on the outer side of the sealing lip.

Wherein, a plurality of flange bolt holes are arranged in a circular row of the coarse filter frame.

Wherein, the pore size of the dense filter is less than 600 μm, and the coarse filter is a 316L stainless steel filter.

Wherein, the regeneration liquid inlet pipe and the middle discharge pipe are respectively provided with a regeneration liquid inlet pipe valve and a middle discharge pipe valve.

The utility model has the following beneficial effects:

In the utility model, a three-layer filter screen is added at the outer end of the main pipe of the middle row device of the male tower. When the middle row device of the male tower fails, the further leakage of the resin can be prevented in time and effectively, and the leakage caused by a large amount of resin can be avoided. Economic losses, mixed bed cycle water production decline and environmental pollution.

Description of drawings

Fig. 1 is a schematic diagram of the forward structure of a positive regeneration tower of the present invention;

Fig. 2 is a top view structure diagram of the device for preventing resin leakage when the row device in the anode regeneration tower of the utility model fails;

Fig. 3 is a schematic view of the lateral cross-sectional structure of the combined state of the leakage-proof filter screen of the present invention;

Fig. 4 is a schematic view of the lateral cross-sectional structure of the leakage-proof filter screen of the present invention in a separated state.

The reference signs in the figure represent:

1-yang regeneration tower, 2-middle row device, 21-main pipe, 22-branch pipe, 3-leakage filter, 31-dense filter unit, 311-dense filter, 312-dense filter frame, 313-sealing Convex edge, 32-coarse filter unit, 321-coarse filter screen, 322-coarse filter screen frame, 323-fitting groove, 324-flange bolt hole, 33-U-shaped sealing ring, 4-inlet regeneration liquid pipe, 41 -Inlet regeneration liquid pipe valve, 5-middle discharge pipe, 51-middle discharge pipe valve.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Figures 1-4, a device for preventing resin leakage when the middle row device of the positive regeneration tower fails, including the positive regeneration tower 1 and the middle row device 2 arranged in the positive regeneration tower 1, the middle row device 2 includes a main pipe 21 and Several branch pipes 22 connected with the flange of the main pipe 21, the main pipe 21 of the middle row device 2 extends to the outside of the positive regeneration tower 1 and is fixedly connected with the side wall of the positive regeneration tower 1, and the outer end of the main pipe 21 of the middle row device 2 is provided with The leak-proof filter screen 3, the leak-proof filter screen 3 is composed of a dense filter unit 31 and a coarse filter unit 32 located on both sides of the dense filter unit 31, the dense filter unit 31 mainly plays the role of intercepting and filtering resin particles, and the coarse filter unit 32 It is mainly used as a supporting framework to protect the middle dense filter unit 31 to prevent the dense filter unit 31 from being broken during operation; two groups of coarse filter units 32 are arranged on both sides of the dense filter unit 31 because the fluid in the pipeline flows in different working modes. No, specifically, for example, the flow directions of the regenerated liquid state and the middle row state are opposite, so that the coarse filter unit 32 can effectively support the dense filter unit 31 in both states;

Specifically, the dense filter unit 31 includes a dense filter screen 311 and a dense filter screen frame 312, the coarse filter unit 32 includes a coarse filter screen 321 and a coarse filter screen frame 322, the aperture of the dense filter screen 311 is less than 600 μm, and the coarse filter screen 321 is 316L stainless steel filter;

Since the pore diameter of the middle dense filter 311 is smaller than the size of the resin particles, the resin leaking through the middle row device 2 will be intercepted by the filter and will not leak from the middle row pipe. The liquid can pass through normally, achieving the purpose of normal regeneration and preventing resin leakage;

Coarse filter screen frame 322 is provided with fitting groove 323 towards the side of close filter screen frame 312, and after the coarse filter screen frame 322 on both sides is closed, the fitting groove 323 on both sides encloses and forms the cavity for accommodating dense filter unit 31 , the installation structure can well protect the built-in dense filter unit 31 and at the same time reduce the distance between the coarse filter 321 and the dense filter 311, so that the coarse filter 321 is better supported by the dense filter 311;

The peripheral outer wall of the dense filter screen frame 312 is provided with a sealing convex edge 313, and a U-shaped sealing ring 33 is nested on the outer side of the sealing convex edge 313, which acts as a seal between the dense filter unit 31 and the coarse filter unit 32 on both sides, and The cladding installation form between the U-shaped sealing ring 33 and the sealing convex edge 313 makes the U-shaped sealing ring 33 not fall off when the device is overhauled and disassembled, and the U-shaped sealing ring 33 and the dense filter unit 31 can also be installed during installation. Pre-installed, easy to install and operate;

A number of flange bolt holes 324 are arranged on the circumference of the coarse filter screen frame 322 , which are used for bolt connection and installation with the pipe end flange of the middle row device 2 .

The outer end of the main pipe 21 of the middle row device 2 is connected with a regeneration liquid inlet pipe 4 and a middle row pipe 5 for feeding the regeneration liquid and the middle row. The regeneration liquid inlet pipe 4 and the middle row pipe 5 are respectively provided with regeneration liquid inlet pipes Valve 41 and middle exhaust pipe valve 51.

The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process conversion made by using the utility model specification and accompanying drawings, or directly or indirectly used in other Related technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (7)

1. a kind of anti-resin leaking device in the middle row device failure of positive regeneration tower, it is characterized in that: comprise positive regeneration tower (1) and be arranged on the row device (2) in described positive regeneration tower (1), so The middle row device (2) includes a main pipe (21) and several branch pipes (22) flanged to the main pipe (21), and the main pipe (21) of the middle row device (2) extends to the Outside the positive regeneration tower (1) and fixedly connected with the side wall of the positive regeneration tower (1), the outer end of the main pipe (21) of the middle row device (2) is provided with a leak-proof filter screen (3), and the leak-proof The filter screen (3) is composed of a dense filter unit (31) and a coarse filter unit (32) located on both sides of the dense filter unit (31), and the outer end of the main pipe (21) of the middle row device (2) is connected to There are regeneration liquid pipeline (4) and middle row pipeline (5). 2. The device for preventing resin leakage when the row device in the anode regeneration tower fails as claimed in claim 1, characterized in that: the dense filter unit (31) includes a dense filter screen (311) and a dense filter screen frame ( 312), the coarse filter unit (32) includes a coarse filter screen (321) and a coarse filter screen frame (322). 3. The device for preventing resin leakage when the row device in the positive regeneration tower fails according to claim 2, characterized in that: the coarse filter screen frame (322) faces to the side of the dense filter screen frame (312) A fitting groove (323) is provided. 4. The device for preventing resin leakage when the row device in the anode regeneration tower fails as claimed in claim 2, characterized in that: the outer wall of the dense filter screen frame (312) is provided with a sealing lip (313), A U-shaped sealing ring (33) is nested on the outer side of the sealing lip (313). 5. The device for preventing resin leakage when the row device in the anode regeneration tower fails as claimed in claim 2, characterized in that: the coarse filter screen frame (322) is provided with a number of flange bolt holes in a circular arrangement (324). 6. The device for preventing resin leakage when the row device in the anode regeneration tower fails according to claim 2, characterized in that: the pore size of the dense filter (311) is less than 600 μm, and the rough filter (321) 316L stainless steel filter. 7. The device for preventing resin leakage when the middle row device of the anode regeneration tower fails as claimed in claim 1, characterized in that: the inlet regeneration liquid pipeline (4) and the middle row pipeline (5) are respectively provided with inlet and outlet pipes. Regenerate liquid pipe valve (41) and middle discharge pipe valve (51).

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