Resin unloading device of chemical water system

Abstract

The invention particularly relates to a resin unloading device of a chemical water system. The resin unloading device comprises a collecting device and a spiral conveying device which are connected through a flange; the collecting device is arranged on a manhole flange of the resin bed of the water melting system and is used for collecting resin flowing out after a manhole cover of the resin bed of the water melting system is opened, and the resin of the resin bed of the water melting system is controlled in the collecting device and is not scattered; the spiral conveying device is connected with the resin barrel and used for spirally conveying the resin collected by the collecting device to the resin barrel. According to the resin unloading device of the chemical water system, mechanization of resin unloading of the chemical water system is achieved, the resin unloading efficiency of the chemical water system is effectively improved, and the operation safety risk of personnel is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of resin unloading in a nuclear power water treatment system, and in particular to a resin unloading device in a water treatment system. Background Art

[0002] The average replacement cycle of resin beds in the chemical water system of Tianwan Nuclear Power Plant Units 1 and 2 is 6 years, during which a total of 36 resin beds need to be replaced. At present, the resin unloading of the resin beds in the chemical water system of nuclear power plants is carried out manually, and the on-site resin unloading mainly includes two stages:

[0003] The first step is the free scattering stage of the resin. A scaffold is set up at the manhole position at the bottom of the resin bed, and a flat plate is laid on it. A canvas for collecting resin is arranged on the upper side of the flat plate. The manhole cover is controlled to open to an appropriate degree, and the resin in the resin bed slides freely out of the manhole. When the amount of resin flowing out covers the canvas below, the manhole cover is closed, and the resin on the canvas is packed into bags manually for transportation. The manhole cover is opened again to discharge and collect the resin until the resin in the resin bed no longer slides freely when all the manhole covers are opened. This process has the disadvantages of long working time, low efficiency, and easy resin scattering.

[0004] The second step is the manual cleaning process. When the waste resin in the resin bed drops to a certain height, the remaining resin cannot be discharged by free scattering. Personnel need to enter the resin bed to clean the remaining resin until all the resin in the resin bed is cleaned. During this period, the working time is long, the efficiency is low, and there is a long period of limited space operation, which poses a high industrial safety risk.

[0005] Therefore, in order to improve the efficiency of resin unloading and reduce the safety risks of personnel operations, it is necessary to design a special tool suitable for unloading resin in the water-based system to realize the unloading of resin in the water-based system. Summary of the invention

[0006] The purpose of the present invention is to provide a resin unloading device for a water-based system, so as to solve the problems of low efficiency and high safety risks of personnel in the existing manual unloading of resin in water-based system, realize the mechanization of resin unloading in water-based system, improve the efficiency of resin unloading in water-based system, and reduce the safety risks of personnel in operation.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A resin unloading device for a water-chemical system comprises a collecting device and a screw conveying device connected with a flange; the collecting device is installed on the manhole flange of the resin bed of the water-chemical system, and is used to collect the resin flowing out after the manhole cover of the resin bed of the water-chemical system is opened, so as to control the resin of the resin bed of the water-chemical system inside the collecting device so as not to scatter; the screw conveying device is connected to the resin barrel, and is used to screw convey the resin collected by the collecting device to the resin barrel.

[0009] As one of the feasible ways, the collecting device is a spliced ​​structure, including a first component, a second component, a third component and a cover plate; the first component, the second component and the third component are spliced ​​to each other to form an annular component; the cover plate is spliced ​​to the outside of the annular component; the inside of the annular component is installed on the manhole flange of the resin bed of the chemical water system.

[0010] As one of the feasible ways, the first component, the second component and the third component are spliced ​​together by means of live bolts and live nuts to form a ring-shaped component; the cover plate is spliced ​​to the outside of the ring-shaped component by means of live bolts and live nuts; the inside of the ring-shaped component is installed on the manhole flange of the resin bed of the chemical water system by means of bolts and nuts.

[0011] As one of the feasible methods, the screw conveying device includes a pipeline and a driving motor; a screw is arranged inside the pipeline, a feed port is arranged at the front end of the pipeline, and a discharge port is arranged at the rear end of the pipeline; a discharge flange is arranged on the lower side of the annular member, a feed flange is arranged on the feed port, and the discharge flange is connected to the feed flange; the lower side of the discharge port is connected to the resin barrel; the driving motor provides driving force for the screw, drives the screw to rotate, and transports the resin entering through the feed port to the discharge port, and then falls to the resin barrel connected to the lower side of the discharge port.

[0012] As one of the feasible ways, the feed flange and the discharge flange are connected by means of a union bolt and a union nut; and the lower side of the discharge port is connected to the resin barrel by means of bolts and nuts.

[0013] Beneficial technical effects of the present invention:

[0014] The resin unloading device for a chemical water system of the present invention is equipped with a collecting device and a screw conveying device according to the resin unloading characteristics of the resin bed in the chemical water system. The collecting device realizes the unloading work in the free scattering stage of the resin, and the screw conveying device realizes the suction of the resin accumulated at the bottom of the resin bed, which effectively improves the efficiency of the resin unloading work and reduces the safety risks of personnel operations during the resin unloading work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the resin unloading device of the water treatment system of the present invention;

[0016] Figure 2 It is a top view of the resin unloading device of the water treatment system of the present invention;

[0017] Figure 3 It is a schematic diagram of the structure of the collection device;

[0018] Figure 4 It is a schematic diagram of the structure of the screw conveyor.

[0019] In the figure, 1, collecting device; 2, screw conveying device; 3, cover plate; 4, first component; 5, second component; 6, third component; 15, feed port; 16, connecting flange; 17, pipeline; 20, discharge port; 21, driving motor. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is described clearly and completely below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "upper side", "lower side", "interior", "inner side", "outer side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] See also Figure 1-4 The present embodiment provides a resin unloading device for a water-based system, including a flange-connected collecting device 1 and a screw conveying device 2; the collecting device 1 is installed on the manhole flange of the resin bed of the water-based system, and is used to collect the resin flowing out after the manhole cover of the resin bed of the water-based system is opened, so as to control the resin of the resin bed of the water-based system and prevent it from scattering; the screw conveying device 2 is connected to the resin barrel, and is used to screw convey the resin collected by the collecting device 1 to the resin barrel.

[0024] In this embodiment, as one of the feasible ways, the collecting device 1 is a spliced ​​structure, including a first component 4, a second component 5, a third component 6 and a cover plate 3; the first component 4, the second component 5 and the third component 6 are spliced ​​to each other to form an annular member; the cover plate 3 is spliced ​​to the outer side of the annular member; the inner side of the annular member is installed on the manhole flange of the resin bed of the chemical water system.

[0025] In this embodiment, as one of the feasible ways, the first component 4, the second component 5 and the third component 6 are spliced ​​together by means of movable bolts and movable nuts to form a ring-shaped member; the cover plate 3 is spliced ​​to the outside of the ring-shaped member by means of movable bolts and movable nuts; the inside of the ring-shaped member is installed on the manhole flange of the resin bed of the chemical water system by means of bolts and nuts.

[0026] In this embodiment, as one of the feasible methods, the screw conveying device 2 includes a pipeline 17 and a driving motor 21; a spiral member is arranged inside the pipeline 17, a feed port 15 is arranged at the front end of the pipeline 17, and a discharge port 20 is arranged at the rear end of the pipeline 17; a discharge flange is arranged on the lower side of the annular member, a feed flange 16 is arranged on the feed port 15, and the discharge flange is connected to the feed flange 16; the lower side of the discharge port 20 is connected to a resin barrel; the driving motor 21 provides driving force for the spiral member, drives the spiral member to rotate, and transports the resin entering through the feed port to the discharge port 20, and then falls to the resin barrel connected to the lower side of the discharge port 20.

[0027] In this embodiment, as one of the feasible ways, the feed flange 16 is connected to the discharge flange by means of a movable bolt and a movable nut; and the lower side of the discharge port 20 is connected to the resin barrel by means of bolts and nuts.

[0028] The resin unloading device for the chemical water system of this embodiment is equipped with a collecting device and a screw conveying device according to the resin unloading characteristics of the resin bed of the chemical water system. The collecting device realizes the unloading work during the free falling stage of the resin, and the screw conveying device realizes the suction of the resin accumulated at the bottom of the resin bed, which effectively improves the efficiency of the resin unloading work and reduces the safety risks of personnel operations during the resin unloading work.

[0029] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A resin unloading device for a water treatment system, characterized in that: The invention comprises a flange-connected collecting device (1) and a screw conveying device (2); the collecting device (1) is installed on the manhole flange of the resin bed of the water-degrading system and is used to collect the resin that flows out after the manhole cover of the resin bed of the water-degrading system is opened, so as to control the resin of the resin bed of the water-degrading system to prevent it from scattering; the screw conveying device (2) is connected to the resin barrel and is used to screw convey the resin collected by the collecting device (1) to the resin barrel.

2. The resin unloading device for water treatment system according to claim 1, characterized in that: The collecting device (1) is a spliced ​​structure, comprising a first component (4), a second component (5), a third component (6) and a cover plate (3); the first component (4), the second component (5) and the third component (6) are spliced ​​to each other to form an annular component; the outer side of the annular component is spliced ​​to the cover plate (3); and the inner side of the annular component is mounted on a manhole flange of a resin bed of a chemical water system.

3. The resin unloading device for water treatment system according to claim 2, characterized in that: The first component (4), the second component (5) and the third component (6) are spliced ​​together by means of live bolts and live nuts to form a ring-shaped component; the cover plate (3) is spliced ​​to the outside of the ring-shaped component by means of live bolts and live nuts; and the inside of the ring-shaped component is mounted on the manhole flange of the resin bed of the chemical water system by means of bolts and nuts.

4. The resin unloading device for water treatment system according to claim 2, characterized in that: The screw conveying device (2) comprises a pipeline (17) and a driving motor (21); a screw is arranged inside the pipeline (17), a feed port (15) is arranged at the front end of the pipeline (17), and a discharge port (20) is arranged at the rear end of the pipeline (17); a discharge flange is arranged at the lower side of the annular member, a feed flange (16) is arranged on the feed port (15), and the discharge flange is connected to the feed flange (16); a resin barrel is connected to the lower side of the discharge port (20); the driving motor (21) provides driving force for the screw, drives the screw to rotate, and transports the resin entering through the feed port to the discharge port (20), and then drops to the resin barrel connected to the lower side of the discharge port (20).

5. The resin unloading device for water treatment system according to claim 4, characterized in that: The feed flange (16) is connected to the discharge flange via a movable bolt and a movable nut; the lower side of the discharge port (20) is connected to the resin barrel via bolts and nuts.

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