Purification filter for cooling system

Abstract

The utility model discloses a purification filter for a cooling system, which comprises a shell and a filter screen component, a rear seal head and a front seal head are respectively arranged at the left end and the right end of the shell, the filter screen component is arranged in the shell and comprises an outer framework, an inner framework and a filter screen, the filter screen is arranged between the outer framework and the inner framework, and the filter screen is arranged in the shell. The outer framework is composed of an upper semicircular framework and a lower semicircular framework, gap filling welding layers are arranged in gaps of the two ends of the outer framework and the two ends of the inner framework respectively, the two end faces are turned to be flat after the outer framework and the inner framework are welded, and an end cover is arranged at the right end of the outer framework and the right end of the inner framework. The left ends of the outer framework and the inner framework are arranged in the annular limiting groove; according to the filter, the machining process of drilling holes in the surface of a traditional framework is simplified, the machining period is shortened, the outer framework is divided into two halves, the filter screen can be easily hooped, and the machining process that the traditional framework is difficult to assemble is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filter element structures, in particular to a purification filter for a cooling system. Background Art

[0002] At present, most commercial reactors generally use light water as coolant, mainly based on its availability and low cost; however, due to the unique physical and chemical properties of water, many problems such as impurity dissolution, material corrosion, chemical reaction and radiolysis will occur when used in the reactor, which will have adverse consequences for the normal operation of the system; coolant impurities are activated by neutrons and enter and are deposited in the pipes of the cooling system and auxiliary systems, which increases the radioactive background of the equipment and the environment, brings difficulties to equipment maintenance, and causes unnecessary radiation damage to operators; In view of the above hazards, it is necessary to focus on the filtration of impurities in the coolant in the coolant system; the purification filter is used in the coolant system to filter out insoluble impurity particles in the coolant; the filter assembly is located inside the filter, and the traditional filter assembly consists of an outer frame, an inner frame, a filter, a left end cover and a right end cover. The outer frame and the inner frame are an integrated structure. The traditional frame has the problem of difficult assembly, and the surface of the frame is drilled with evenly distributed holes, which not only has low structural strength, but also has a long processing cycle; In view of the above problems, a purification filter for a cooling system is proposed. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a purification filter for a cooling system, which simplifies the processing technology of drilling holes on the surface of the traditional skeleton, shortens the processing cycle, and divides the outer skeleton into two halves, which can not only easily tighten the filter screen, but also improves the processing technology of the traditional skeleton assembly which is difficult, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a purification filter for a cooling system, comprising a shell and a filter assembly, the left and right ends of the shell are respectively provided with a rear head and a front head, the filter assembly is arranged inside the shell, the filter assembly comprises an exoskeleton, an inner frame and a filter, the filter is arranged between the exoskeleton and the inner frame, the exoskeleton is composed of an upper semicircular frame and a lower semicircular frame, the gaps at both ends of the exoskeleton and the inner frame are respectively provided with a caulking welding layer, and the two end surfaces of the exoskeleton and the inner frame are flattened after welding, the right ends of the exoskeleton and the inner frame are provided with end covers, the center hole of the rear head is provided with an annular limiting groove, and the left ends of the exoskeleton and the inner frame are arranged in the annular limiting groove.

[0005] Furthermore, a tube seat is arranged at the lower part of the shell, a screw plug is arranged at the lower end of the tube seat, and a copper pad is arranged between the screw plug and the tube seat.

[0006] Furthermore, a tightening assembly is provided between the end cover and the front head, and the tightening assembly includes the end cover and a limiting ring, and the limiting ring and the end cover are connected by connecting ribs.

[0007] Furthermore, the diameter of the top plate is smaller than the diameter of the end cover, and the inner diameter of the front head is equal to the inner diameter of the limiting ring.

[0008] Furthermore, long holes are respectively arranged on the circumferential surfaces of the outer frame and the inner frame.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The processing technology of drilling holes on the surface of the traditional skeleton is simplified, the processing cycle is shortened, and the outer skeleton is divided into two halves, which can not only easily tighten the filter screen, but also improve the processing technology of the traditional skeleton assembly which is difficult.

[0011] 2. The caulking weld layer can not only reliably connect the outer frame and the inner frame together, but also can well ensure the shape and position tolerance when assembled with other parts. By tightening the assembly to support the right end of the filter assembly, it forms support for both ends of the filter assembly and increases the strength of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the filter assembly of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the tightening assembly of the utility model;

[0015] Figure 4 This is a schematic diagram of the rear head structure of the utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the filter assembly of the utility model.

[0017] In the figure: 1 front head, 2 screw plug, 3 copper gasket, 4 shell, 5 rear head, 6 filter assembly, 7 pipe seat, 8 end cover, 9 caulking weld layer, 10 long hole, 11 upper semicircular frame, 12 inner frame, 13 lower semicircular frame, 14 connecting rib, 15 limiting ring, 16 top plate, 17 annular limiting groove, 18 outer frame, 19 filter. DETAILED DESCRIPTION

[0018] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0019] See also Figure 1-5 The utility model provides a technical solution: a purification filter for a cooling system, comprising a shell 4 and a filter assembly 6, the left and right ends of the shell 4 are respectively provided with a rear head 5 and a front head 1, which are completed by argon arc welding, and a single-sided welding and double-sided forming welding process is adopted. All materials are made of the same metal to avoid the occurrence of potential corrosion of dissimilar metals. The filter assembly 6 is arranged inside the shell 4, and the filter assembly 6 includes an outer frame 18, an inner frame 12 and a filter 19. The filter 19 is arranged between the outer frame 18 and the inner frame 12. The outer frame 18 is composed of an upper semicircular frame 11 and a lower semicircular frame 13. The two-stage structural design of the outer frame 18 can not only easily tighten the filter 19, but also improve the difficult assembly of the traditional frame. The process effectively solves the problem of difficult assembly of the traditional integrated frame structure. The gaps at both ends of the outer frame 18 and the inner frame 12 are respectively provided with a caulking welding layer 9, and the two end surfaces of the outer frame 18 and the inner frame 12 are flattened after welding. The caulking welding layer 9 can not only reliably connect the outer frame 18 and the inner frame 12 together, but also can well ensure the shape and position tolerance when assembled with other parts. The right ends of the outer frame 18 and the inner frame 12 are provided with an end cover 8, and it is only necessary to provide the end cover 8 at the right end. An annular limiting groove 17 is provided at the center hole of the rear head 5, and the left ends of the outer frame 18 and the inner frame 12 are provided in the annular limiting groove 17. The structure is directly provided in the annular limiting groove 17, which can save an end cover 8 and reduce costs.

[0020] A tube seat 7 is provided at the lower part of the shell 4, and a screw plug 2 is provided at the lower end of the tube seat 7. A copper washer 3 is provided between the screw plug 2 and the tube seat 7. The copper washer 3 increases the connection strength between the screw plug 2 and the tube seat 7 to prevent loosening, and can work normally under high temperature and high pressure environment. The threaded part of the tube seat 7 is processed after welding, avoiding the thread deformation caused by processing the thread first and then welding. After the thread processing is completed, the tube seat 7 is locally nitrided to improve the surface hardness and wear resistance of the tube seat, and also avoid cold pressure welding between the tube seat 7 and the screw plug 2.

[0021] A tightening assembly is arranged between the end cover 8 and the front head 1, and the tightening assembly includes the end cover 8 and a limiting ring 15. The limiting ring 15 and the end cover 8 are connected by a connecting rib 14. Since the left end of the filter assembly is located in the annular limiting groove 17 and the right end lacks support, the filter assembly is deformed under the impact of external force. The right end of the filter assembly is supported by the tightening assembly, and support is formed at both ends of the filter assembly to increase the strength of the structure.

[0022] The diameter of the top plate 16 is smaller than the diameter of the end cover 8, and the inner diameter of the front head 1 is equal to the inner diameter of the limit ring 15, so that the shaking of the top tightening assembly can be avoided.

[0023] Long holes 10 are respectively arranged on the circumferential surfaces of the outer frame 18 and the inner frame 12. The arrangement of the long holes 10 simplifies the processing technology of drilling holes on the surface of the traditional frame and shortens the processing cycle.

[0024] The basic principles, main features and advantages of the present invention are shown and described above. Without departing from the spirit and scope of the present invention, the present invention may also be subject to various changes and improvements, which are all within the scope of the present invention to be protected.

Claims

1. A purification filter for a cooling system, comprising a housing (4) and a filter assembly (6), characterized in that: The left and right ends of the shell (4) are respectively provided with a rear head (5) and a front head (1). The filter assembly (6) is arranged inside the shell (4). The filter assembly (6) comprises an outer frame (18), an inner frame (12) and a filter (19). The filter (19) is arranged between the outer frame (18) and the inner frame (12). The outer frame (18) is composed of an upper semicircular frame (11) and a lower semicircular frame (13). A caulking welding layer (9) is respectively provided at the gaps at both ends of the outer frame (18) and the inner frame (12). After welding, the two end surfaces of the outer frame (18) and the inner frame (12) are flattened. End covers (8) are provided at the right ends of the outer frame (18) and the inner frame (12). An annular limiting groove (17) is provided at the center hole of the rear head (5). The left ends of the outer frame (18) and the inner frame (12) are arranged in the annular limiting groove (17).

2. A cooling system purification filter according to claim 1, characterized in that: A tube seat (7) is arranged at the lower part of the shell (4), a screw plug (2) is arranged at the lower end of the tube seat (7), and a copper pad (3) is arranged between the screw plug (2) and the tube seat (7).

3. The cooling system purification filter according to claim 1, characterized in that: A tightening assembly is provided between the end cover (8) and the front end cover (1), the tightening assembly comprising the end cover (8) and a limiting ring (15), and the limiting ring (15) and the end cover (8) are connected via a connecting rib (14).

4. A cooling system purification filter according to claim 3, characterized in that: The diameter of the top plate (16) is smaller than the diameter of the end cover (8), and the inner diameter of the front head (1) is equal to the inner diameter of the limiting ring (15).

5. The cooling system purification filter according to claim 1, characterized in that: Long holes (10) are respectively provided on the circumferential surfaces of the outer frame (18) and the inner frame (12).

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