A nuclear power generator rod purging device

Abstract

The utility model provides a nuclear power generator wire rod purging device. One end of the first valve is detachably connected to the first end of the first connecting pipe or the first end of the second connecting pipe, and the other end is connected to the first end of the first wire rod joint; the first wire rod joint is butted with one end of the wire rod; the second end of the first connecting pipe is connected to the gas source; the second end of the second connecting pipe is connected to the water source; one end of the second valve is connected to the first end of the second wire rod joint, and the other end is connected to the first end of the third connecting pipe; the second wire rod joint is butted with the other end of the wire rod; a pressure gauge is arranged between the second valve and the second wire rod joint. Since the present application can realize forward and reverse purging of the wire rod, foreign matter in the wire rod can be effectively removed by forward and reverse purging of the wire rod, ensuring that the cooling water in the wire rod of the stator of the generator can flow smoothly, thereby ensuring the cooling effect of the wire rod and avoiding damage due to temperature increase of the wire rod.

Description

Technical Field

[0001] The utility model relates to the field of nuclear power generators, in particular to a nuclear power generator wire rod purging device. Background Art

[0002] Nuclear power generators are generally composed of stators, rotors, stator cores, end shields, etc. The main component of the stator is the wire rod. During operation, the wire rods of the stator of the nuclear power generator may be blocked to varying degrees due to corrosion products or foreign matter, which will affect the cooling effect and cause the temperature of the wire rods to rise abnormally. In severe cases, it will cause the unit to shut down or even burn the wire rods, causing losses of up to tens of millions. Therefore, there is an urgent need for a device that can clean corrosion products or foreign matter in the wire rods. Utility Model Content

[0003] In view of this, an embodiment of the utility model provides a nuclear power generator wire rod blowing device to clean corrosion products or foreign matter in the stator wire rod.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A nuclear power generator wire rod purging device comprises: a first valve, a first wire rod joint, a second wire rod joint, a second valve, a first connecting pipe, a second connecting pipe, a third connecting pipe and a pressure gauge;

[0006] One end of the first valve is detachably connected to the first end of the first connecting pipe or the first end of the second connecting pipe, and the other end is connected to the first end of the first wire rod connector;

[0007] The first wire rod joint is used for butting against one end of the wire rod;

[0008] The second end of the first connecting pipe is used to communicate with the gas source;

[0009] The second end of the second connecting pipe is used to communicate with a water source;

[0010] One end of the second valve is communicated with the first end of the second wire rod connector, and the other end of the second valve is communicated with the first end of the third connecting pipe;

[0011] The second wire rod joint is used for connecting with the other end of the wire rod;

[0012] The pressure gauge is arranged between the second valve and the second wire rod joint.

[0013] Preferably, the first connecting pipe, the second connecting pipe and the third connecting pipe are all flexible hoses.

[0014] Preferably, the first valve and / or the second valve is an isolation valve.

[0015] Preferably, it also includes: a water intake flange arranged at the second end of the second connecting pipe.

[0016] Preferably, it further comprises: a third valve disposed at the second end of the first connecting pipe.

[0017] Preferably, it further comprises: a collecting bucket arranged at the second end of the third connecting pipe.

[0018] Preferably, it also includes: a plug for sealing the ends of the first connecting pipe, the second connecting pipe and the third connecting pipe.

[0019] Based on the above-mentioned utility model, a nuclear power generator wire rod purging device is provided, in which one end of the first valve is detachably connected to the first end of the first connecting pipe or the first end of the second connecting pipe, and the other end is connected to the first end of the first wire rod joint; the first wire rod joint is butt-jointed with one end of the wire rod; the second end of the first connecting pipe is connected to the gas source; the second end of the second connecting pipe is connected to the water source; one end of the second valve is connected to the first end of the second wire rod joint, and the other end is connected to the first end of the third connecting pipe; the second wire rod joint is butt-jointed with the other end of the wire rod; and a pressure gauge is arranged between the second valve and the second wire rod joint. With the above-disclosed nuclear power generator wire rod purging device, since the first wire rod joint can be docked with the wire rod on the steam side, and the second wire rod joint can be docked with the wire rod on the excitation side, or the second wire rod joint can be docked with the wire rod on the steam side and the first wire rod joint can be docked with the wire rod on the excitation side, the wire rod is first purged by docking the first wire rod joint with the wire rod on the steam side and the second wire rod joint with the wire rod on the excitation side, and then the second wire rod joint is docked with the wire rod on the steam side and the first wire rod joint with the wire rod on the excitation side, thereby achieving forward and reverse purging of the wire rod. By the forward and reverse purging of the wire rod, foreign matter in the wire rod can be effectively removed, ensuring that the cooling water in the wire rod of the stator of the generator can flow smoothly, thereby ensuring the cooling effect of the wire rod and avoiding damage due to increased temperature of the wire rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the connection of a nuclear power generator rod purge device provided by an embodiment of the utility model;

[0022] Figure 2 Another connection schematic diagram of the nuclear power generator rod purging device provided in an embodiment of the utility model.

[0023] Among them, there are a first valve 1, a first wire rod joint 2, a second wire rod joint 3, a second valve 4, a first connecting pipe 5, a second connecting pipe 6, a third connecting pipe 7, a pressure gauge 8, a water intake flange 9, a third valve 10, and a collection bucket 11. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides a nuclear power generator rod blowing device, see Figure 1 and Figure 2 , Figure 1 The figure is a schematic diagram of the connection of the nuclear power generator wire rod purging device when in use, wherein the nuclear power generator wire rod purging device comprises: a first valve 1, a first wire rod joint 2, a second wire rod joint 3, a second valve 4, a first connecting pipe 5, a second connecting pipe 6, a third connecting pipe 7 and a pressure gauge 8;

[0026] One end of the first valve 1 is detachably connected to the first end of the first connecting pipe 5 or the first end of the second connecting pipe 6, and the other end is connected to the first end of the first wire rod connector 2;

[0027] The first wire rod joint 2 is used for connecting with one end of the wire rod;

[0028] The second end of the first connecting pipe 5 is used to communicate with the gas source;

[0029] The second end of the second connecting pipe 6 is used to communicate with the water source;

[0030] One end of the second valve 4 is connected to the first end of the second wire rod connector 3, and the other end is connected to the first end of the third connecting pipe 7;

[0031] The second wire rod joint 3 is used to connect with the other end of the wire rod;

[0032] The pressure gauge 8 is arranged between the second valve 4 and the second wire rod joint 3 .

[0033] It should be noted that the water inlet and outlet pipes of the generator's wire rods are respectively located on the steam side and the excitation side of the generator. By docking the first wire rod joint 2 with the wire rod on the steam side and the second wire rod joint 3 with the wire rod on the excitation side, forward blowing can be achieved; and by docking the second wire rod joint 3 with the wire rod on the steam side and the first wire rod joint 2 with the wire rod on the excitation side, reverse blowing can be achieved.

[0034] When cleaning the inside of the wire rod, the first wire rod joint 2 can be connected to the wire rod on the steam side, one end of the first valve 1 is connected to the first end of the second connecting pipe 6, the second connecting pipe 6 is connected to the water source, and then water is injected into the wire rod, and then the first valve 1 is connected to the first end of the first connecting pipe 5, and the first connecting pipe 5 is connected to the gas source, and the wire rod is inflated to hold the pressure. When the value of the pressure gauge 8 reaches a certain value, the second valve 4 is quickly opened to release the pressure, and then the corrosion products or foreign matter blocked in the wire rod are removed through the air hammer impact effect caused by the sudden pressure release of the gas containing water.

[0035] It is worth noting that the water used for purging in this application is plasma water.

[0036] In the embodiment of the utility model, one end of the first valve 1 is detachably connected to the first end of the first connecting pipe 5 or the first end of the second connecting pipe 6, and the other end is connected to the first end of the first wire rod joint 2; the first wire rod joint 2 is butt-jointed with one end of the wire rod; the second end of the first connecting pipe 5 is connected to the air source; the second end of the second connecting pipe 6 is connected to the water source; one end of the second valve 4 is connected to the first end of the second wire rod joint 3, and the other end is connected to the first end of the third connecting pipe 7; the second wire rod joint 3 is butt-jointed with the other end of the wire rod; and a pressure gauge 8 is arranged between the second valve 4 and the second wire rod joint 3. Through the above-disclosed nuclear power generator wire rod purging device, since the first wire rod joint 2 can be connected to the wire rod on the steam side, the second wire rod joint 3 can be connected to the wire rod on the excitation side, or the second wire rod joint 3 can be connected to the wire rod on the steam side, and the first wire rod joint 2 can be connected to the wire rod on the excitation side, therefore, the wire rod is first purged by connecting the first wire rod joint 2 to the wire rod on the steam side and the second wire rod joint 3 to the wire rod on the excitation side, and then the second wire rod joint 3 is connected to the wire rod on the steam side and the first wire rod joint 2 is connected to the wire rod on the excitation side, thereby realizing forward and reverse purging of the wire rod. By forward and reverse purging of the wire rod, foreign matter in the wire rod can be effectively removed, ensuring that the cooling water in the wire rod of the stator of the generator can flow smoothly, thereby ensuring the cooling effect of the wire rod and avoiding damage due to increased temperature of the wire rod.

[0037] Specifically, the first connecting pipe 5 , the second connecting pipe 6 and the third connecting pipe 7 are all flexible hoses.

[0038] It should be noted that setting the first connecting pipe 5, the second connecting pipe 6 and the third connecting pipe 7 as flexible hoses not only facilitates the storage of the first connecting pipe 5, the second connecting pipe 6 and the third connecting pipe 7, but also facilitates the laying of the first connecting pipe 5, the second connecting pipe 6 and the third connecting pipe 7.

[0039] Further, the first valve 1 and / or the second valve 4 is an isolation valve.

[0040] It should be noted that an isolation valve refers to a valve whose opening and closing part is a circular valve disc and which relies on its own weight and medium pressure to produce a movement to block the backflow of the medium. Setting the first valve 1 as an isolation valve can effectively prevent the backflow of water or air from causing the pressure inside the wire rod to decrease when the pressure is built up.

[0041] Setting the second valve 4 as an isolation valve can effectively prevent water from flowing back and returning corrosion products or foreign matter to the wire rod.

[0042] Furthermore, the nuclear power generator rod purging device also includes: a water intake flange 9 arranged at the second end of the second connecting pipe 6.

[0043] It should be noted that, by providing a water intake flange 9 at the second end of the second connecting pipe 6 , it is convenient for the staff to connect the second connecting pipe 6 to the water source, thereby effectively improving the wire rod purging efficiency.

[0044] Furthermore, the nuclear power generator rod purging device further includes: a third valve 10 arranged at the second end of the first connecting pipe 5 .

[0045] It should be noted that, by providing the third valve 10 at the second end of the first connecting pipe 5, it is possible to further avoid the problem of pressure reduction in the wire rod due to air backflow during pressure holding.

[0046] Specifically, the third valve 10 is an air isolation valve.

[0047] Specifically, the nuclear power generator rod purging device further includes: a collecting bucket 11 arranged at the second end of the third connecting pipe 7 .

[0048] It should be noted that, by providing a collection bucket 11 at the second end of the third connecting pipe 7, foreign matter and water discharged from the wire rod are collected, which is convenient for the staff to handle in a centralized manner.

[0049] It should also be noted that, in order to prevent foreign matter from being lost, a hole just passing the diameter of the second connecting pipe 6 is drilled in the middle of the sealing cover of the barrel.

[0050] Furthermore, the nuclear power generator rod purging device also includes: a plug for sealing the ends of the first connecting pipe 5 , the second connecting pipe 6 and the third connecting pipe 7 .

[0051] It should be noted that by providing a plug for sealing the ends of the first connecting tube 5, the second connecting tube 6 and the third connecting tube 7, foreign matter can be prevented from entering the first connecting tube 5, the second connecting tube 6 and the third connecting tube 7, and water or air leakage can be effectively avoided when the pressure is held, resulting in a decrease in the pressure inside the wire rod.

[0052] Based on the above disclosed solution, a method for using a nuclear power generator rod purging device is also provided below.

[0053] S1. Connect one end of the first valve 1 to the first end of the second connecting pipe 6, and the other end to the first end of the first wire rod joint 2. The second end of the second connecting pipe 6 is connected to the water source through the water intake flange 9; one end of the second valve 4 is connected to the first end of the second wire rod joint 3, and the other end is connected to the first end of the third connecting pipe 7; the first wire rod joint 2 and the second wire rod joint 3 are respectively connected to the two ends of the wire rod.

[0054] S2, open the valve of the water source, then open the first valve 1 and the second valve 4 of the present application, so that water is injected into the wire rod, and when the water flows out from the other end of the wire rod, close the valve of the water source, the first valve 1 and the second valve 4.

[0055] S3, removing the first connecting pipe 5 from the first valve 1, and connecting the second connecting pipe 6 to the first valve 1.

[0056] S4. Open the valve of the gas source and the first valve 1 to inflate the wire rod.

[0057] S5. After the value of the barometer reaches 0.3-0.5Mpa, open the second valve 4 to discharge the gas and water into the collection bucket 11.

[0058] S6. After the value of the pressure gauge drops to 0.1 MPa, close the first valve 1 and observe whether there is any foreign matter in the collection barrel 11.

[0059] Repeat the above steps S2-S6. After multiple purges and confirmation that there are no foreign objects, determine whether to perform reverse purge in the next step based on the purge effect, and then perform reverse purge of the wire rod in the same way as forward purge. The joints of the first connecting pipe 5, the second connecting pipe 6 and the third connecting pipe 7 that have been purged are promptly sealed with plugs.

[0060] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A nuclear power generator rod purging device, characterized in that: include: A first valve, a first wire rod joint, a second wire rod joint, a second valve, a first connecting pipe, a second connecting pipe, a third connecting pipe and a pressure gauge; One end of the first valve is detachably connected to the first end of the first connecting pipe or the first end of the second connecting pipe, and the other end is connected to the first end of the first wire rod connector; The first wire rod joint is used to connect with one end of the wire rod; The second end of the first connecting pipe is used to communicate with the gas source; The second end of the second connecting pipe is used to communicate with a water source; One end of the second valve is connected to the first end of the second wire rod connector, and the other end of the second valve is connected to the first end of the third connecting pipe; The second wire rod joint is used to connect with the other end of the wire rod; The pressure gauge is arranged between the second valve and the second wire rod joint.

2. The nuclear power generator rod purging device according to claim 1, characterized in that: The first connecting pipe, the second connecting pipe and the third connecting pipe are all flexible hoses.

3. The nuclear power generator rod purging device according to claim 1, characterized in that: The first valve and / or the second valve is an isolation valve.

4. The nuclear power generator rod purging device according to claim 1, characterized in that: Also includes: A water intake flange is arranged at the second end of the second connecting pipe.

5. The nuclear power generator rod purging device according to claim 1, characterized in that: Also includes: A third valve is disposed at the second end of the first connecting pipe.

6. The nuclear power generator rod purging device according to claim 1, characterized in that: Also includes: A collecting bucket is arranged at the second end of the third connecting pipe.

7. The nuclear power generator rod purging device according to claim 1, characterized in that: Also includes: A plug is used to seal the ends of the first connecting pipe, the second connecting pipe and the third connecting pipe.

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