CN217468004U - Flushing and heavy water collecting device - Google Patents
Flushing and heavy water collecting device Download PDFInfo
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- CN217468004U CN217468004U CN202220496485.8U CN202220496485U CN217468004U CN 217468004 U CN217468004 U CN 217468004U CN 202220496485 U CN202220496485 U CN 202220496485U CN 217468004 U CN217468004 U CN 217468004U
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- control valve
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Abstract
The utility model provides a wash and collect heavy water installation, including rinse-system and collection system, the rinse-system includes the demineralized water tank, be equipped with the isolation valve on the outlet pipeline of demineralized water tank, the exit end of outlet pipeline is connected with first pipeline, be equipped with C pole washing control valve, rectangle pipeline on the first pipeline, be equipped with C pole forward control valve, C pole withdrawal control valve on the rectangle pipeline, C pole forward control valve is external to have C pole forward hose, C pole withdrawal control valve is external to have C pole withdrawal hose, the low reaches of rectangle pipeline are external to have middle hose; the collection system comprises a collection tank and a heavy water collection bucket. The device provided by the utility model replace through the clear water and discharge heavy water to collect heavy water, handle the back and multiplex, reduce and overhaul the manpower, shorten the repair time, reduce personnel's collective and individual dose, prevent effectively that the factory building from polluting and the staff receives the risk that unexpected dose shines.
Description
Technical Field
The utility model relates to a heavy water reactor nuclear power station heavy water collects technical field, especially relates to a wash and collect heavy water installation.
Background
One of the biggest characteristics of the heavy water reactor nuclear power unit of the third nuclear power plant in Qinshan is that the nuclear power unit does not stop the reactor and change materials. The reactor uses heavy water as moderator and coolant. Heavy water is very expensive and is imported from abroad. The irradiated heavy water with the concentration of more than or equal to 0.4 WT% needs to be collected.
The loading and unloading machine is the main equipment for realizing the continuous stacking and material changing, and a push rod in the loading and unloading machine needs to be replaced periodically for offline maintenance. The push rod is a complex device and comprises a C push rod, a mechanical seal and the like, wherein the C push rod consists of more than one thousand parts and components. Wherein the C push rod is driven by heavy water, and the mechanical seal is lubricated and cooled by the heavy water. When the push rod of the loading and unloading machine is overhauled, most heavy water is remained in the push rod cavity, and the flowing heavy water reaches the ground of a factory building, so that the heavy water loss and the factory building pollution are caused. Heavy water in a C push rod of a material loading and unloading machine push rod and a mechanical seal is not discharged, heavy water loss is caused, and a maintainer is exposed to the risk of dose irradiation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the defect among the prior art to provide a wash and collect heavy water installation, the device replaces through the clear water and discharges the heavy water, and collects the heavy water, handles the back multiplex, reduces and overhauls the manpower, shortens repair time, reduces personnel's collective and individual dose, prevents effectively that the factory building from polluting and the staff receives the risk that unexpected dose shines.
In order to achieve the above object, the present invention provides the following technical solutions:
a heavy water flushing and collecting device comprises a flushing system and a collecting system,
the flushing system comprises a desalted water tank, an isolating valve is arranged on an outlet pipeline of the desalted water tank, the outlet end of the outlet pipeline is connected with a first pipeline, a C rod flushing control valve and a rectangular pipeline are arranged on the first pipeline, a C rod advancing control valve and a C rod withdrawing control valve are arranged on the rectangular pipeline, a C rod advancing hose is externally connected with the C rod advancing control valve, a C rod withdrawing hose is externally connected with the C rod withdrawing control valve, and a middle hose is externally connected with the downstream of the rectangular pipeline;
the collection system comprises a collection tank and a heavy water collection bucket.
As an implementation mode, the outlet end is further connected with a second pipeline, the second pipeline is connected with the first pipeline in parallel, and a mechanical seal flushing control valve and a mechanical seal flushing hose are arranged on the second pipeline.
As an implementation manner, a second pressure gauge is arranged on the second pipeline.
As a practical way, a filter is arranged on the outlet pipeline.
As an implementable mode, a first pressure gauge is arranged between the C-rod flushing control valve and the rectangular pipeline.
In an embodiment, the flushing system is provided at a side of the frame and the collecting system is provided at a lower part of the frame.
As a practical way, the bottom of the heavy water collecting barrel is provided with a roller.
As an implementable mode, the heavy water collecting barrel is provided with an exhaust valve, and the bottom of the heavy water collecting barrel is provided with a drain valve.
As a practical way, the top of the heavy water collecting barrel is provided with a collecting barrel isolating valve.
As a practical way, the heavy water collecting barrel is provided with a liquid level meter.
Compared with the prior art, the utility model provides a wash and collect heavy water installation has following beneficial effect:
the device provided by the utility model includes washing system and collecting system for when heavy water nuclear power plant's loading and unloading machine push rod overhauls, with the push rod cavity indoor, collect after the heavy water in C push rod, the mechanical seal washes, avoided personnel to be infected with the heavy water at the maintenance in-process, wear for a long time and prevent the tritium device, reduced the maintenance manpower, shorten the repair time, reduce personnel's collective and individual dose, ensure to prevent effectively that the factory building from polluting and the staff receives the risk that unexpected dose shines.
The utility model provides a collection system washes out the heavy water in with push rod cavity, C push rod, mechanical seal and collects, has avoided the polluted environment, carries out the heavy water recovery simultaneously, and the expensive heavy water in back of upgrading can utilize.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a front view of a heavy water flushing and collecting device according to an embodiment of the present invention;
fig. 2 is a right side view of a heavy water flushing and collecting device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a flushing system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a collecting system according to an embodiment of the present invention;
fig. 5 is a sectional view of a push rod pipe support according to an embodiment of the present invention;
fig. 6 is a cross-sectional view of the push rod supporting frame according to the embodiment of the present invention;
fig. 7 is a cross-sectional view of the supporting frame at the end of the push rod according to the embodiment of the present invention.
Description of reference numerals:
1-desalted water tank, 2-isolation valve, 3-filter, 4-mechanical seal flushing control valve, 5-C rod flushing control valve, 6-first pressure gauge, 7-C rod advancing control valve, 8-C rod withdrawing control valve, 9-support, 10-collecting tank, 11-heavy water collecting barrel, 12-push rod support frame, 13-push rod pipe support frame, 14-push rod, 15-push rod rear support frame, 16-C rod advancing joint, 17-C rod withdrawing joint, 18-mechanical seal joint, 19-push rod chamber joint, 20-C rod advancing hose, 21-middle hose, 22-C rod withdrawing hose, 23-mechanical seal flushing hose, 111-roller, 112-exhaust valve, 113-drain valve, 114-collecting vessel isolation valve, 115-level gauge.
Detailed Description
Although the present invention may be embodied in many different forms, exemplary embodiments will be described in detail herein with reference to the accompanying drawings, it being understood that the description herein should be considered as an illustration of the structure of the flushing and collecting heavy water device and is not intended to limit the scope of the present invention to the exemplary embodiments. Accordingly, the drawings and description of the specific embodiments are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer", etc. indicate the orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or component referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The following is a more detailed description of the present invention by way of specific embodiments.
For ease of understanding, a brief description of the environment in which the present apparatus may be used will first be provided. As shown in fig. 1 and 5 to 7, the device is completed by improving the existing bracket 9, the push rod support frame 12, the push rod pipe support frame 13 and the push rod rear support frame 15. The support 9 is provided with 2 push rod support frames 12, the push rod 14 is placed above the 2 push rod support frames 12, and at the moment, the rear part of the push rod 14 is fixed on a push rod rear part support frame 15 through a bolt. The push rod 14 is now in service.
As shown in fig. 1 to 4, the utility model provides a heavy water flushing and collecting device, which comprises a flushing system and a collecting system. As shown in fig. 3, the flushing system includes a demineralized water tank 1 (i.e., a demineralized water system), an isolation valve 2, a filter 3, a mechanical seal flushing control valve 4, a C-rod flushing control valve 5, a first pressure gauge 6, a C-rod forward control valve 7, a C-rod retraction control valve 8, a C-rod forward hose 20, an intermediate hose 21 (i.e., a push rod chamber flushing and C-rod heavy water collecting hose), a C-rod retraction hose 22, and a mechanical seal flushing hose 23. As shown in fig. 4, the collection system comprises a collection tank 10 and a heavy water collection bucket 11 in communication.
Specifically, be equipped with isolating valve 2 on the outlet pipeline of demineralized water tank 1, the exit end of outlet pipeline is connected with first pipeline, is equipped with C pole washing control valve 5 on the first pipeline, rectangular pipe, is equipped with C pole advancing control valve 7 on the rectangular pipe, C pole withdraw control valve 8, and C pole advancing control valve 7 is external to have C pole advancing hose 20, and C pole withdraw control valve 8 is external to have C pole withdraw hose 22, and the low reaches of rectangular pipe are external to have middle hose 21. The outlet end of the outlet pipeline is also connected with a second pipeline which is connected with the first pipeline in parallel, and the second pipeline is provided with a mechanical seal flushing control valve 4 and a mechanical seal flushing hose 23.
It should be noted that the above-mentioned rectangular pipeline refers to that the head and the tail of two parallel pipelines shown in fig. 3 are connected to form a rectangular shape, and the head of the two parallel pipelines and the outlet of the first pipeline form a tee. The location where the tail portion is connected to the tail portion is downstream, and the intermediate hose 21 is connected to the downstream location.
Opening the isolation valve 2, enabling the desalted water to pass through the filter 3, opening the C rod flushing control valve 5, connecting the C rod advancing hose 20 with the C rod advancing connector 16, connecting the C rod withdrawing hose 22 with the C rod withdrawing connector 17, placing the middle hose 21 (the middle hose 21 is used for collecting C rod heavy water) in the collecting tank 10, ensuring that the heavy water discharged by the C rod is discharged to the collecting tank 10, and finally being recovered into the heavy water collecting barrel 11. The C rod forward control valve 7 and the C rod back control valve 8 can only open one of the valves in the process of carrying out the C rod heavy water flushing. One of the C rod advancing control valve 7 and the C rod withdrawing control valve 8 is opened/closed to realize the advancing/withdrawing action of the C push rod, and 2 push rod pipe support frames 13 are used when the C push rod advances/withdraws to avoid the bending of the C rod. And (4) replacing the heavy water in the push rod C. Judge water pressure through first manometer 6, avoid C push rod to move too fast, damage equipment. And after the C push rod finishes flushing, closing the C rod advancing control valve 7 and the C rod withdrawing control valve 8. The connection of the C-rod advancing hose 20 to the C-rod advancing joint 16 is removed, and the connection of the C-rod retracting hose 22 to the C-rod retracting joint 17 is removed.
Keeping the C-rod flushing control valve 5 open, connecting an intermediate hose 21 (which is used for flushing the push rod chamber) to the push rod chamber joint 19 by opening any one of the C-rod forward control valve 7 and the C-rod backward control valve 8, flushing the push rod chamber, flushing residual heavy water in the push rod chamber, and leading the drained heavy water to flow into the collecting tank 10 and finally be recovered into the heavy water collecting barrel 11. After the flushing is completed, the C-rod flushing control valve 5 is closed, and the opened valve of the C-rod advancing control valve 7 and the C-rod retracting control valve 8 is closed. The connection of the intermediate hose 21 (which now functions as a push rod chamber flushing) to the push rod chamber connection 19 is removed.
And after the C rod and push rod chambers are flushed, the C rod advancing control valve 7 and the C rod withdrawing control valve 8 are closed completely.
The mechanical seal flushing hose 23 is connected to 4 mechanical seal joints 18, the mechanical seal flushing control valve 4 is opened, the push rod is operated to advance/retract, and heavy water in the mechanical seal is replaced. And the water pressure is judged through the second pressure gauge, so that the sealing groove is prevented from being flushed out by desalted water to avoid equipment damage. After the flushing is completed, the mechanical seal flushing control valve 4 is closed, and the mechanical seal flushing hose is disconnected from the 4 mechanical seal connectors 18.
After the flushing is finished, the isolation valve 2 is closed, and meanwhile, the mechanical seal flushing control valve 4, the C rod flushing control valve 5, the C rod advancing control valve 7 and the C rod withdrawing control valve 8 are confirmed to be closed.
As shown in fig. 4, the heavy water is collected by the collection tank 10 to the heavy water collection tub 11, and the heavy water collection tub 11 can collect about 150Kg of heavy water. After collection, the heavy water in the collection tank 10 can be ensured not to be discharged into the heavy water collection tank 11 temporarily by closing the collection tank isolation valve 114. The heavy water collecting barrel 11 is provided with a liquid level meter 115, so that the heavy water can be observed and collected conveniently, and the bottom of the heavy water collecting barrel is provided with a roller 111, so that the heavy water collecting barrel is convenient to transport. An exhaust valve 112 is arranged above the heavy water collecting barrel 11, and a drain valve 113 is arranged at the bottom of the heavy water collecting barrel.
According to the condition among the actual work, remaining heavy water in the push rod is concentrated in push rod cavity, C push rod, mechanical seal, the utility model provides a wash and collect heavy water device can be applied to in push rod cavity, C push rod, mechanical seal, collect and recovery processing heavy water when overhauing the handler push rod. Through the mode of washing or replacing, adopt different operation methods to these 3 places of difference, the homoenergetic washes well and replaces out the heavy water, has avoided personnel to be infected with the heavy water at the maintenance in-process, wears for a long time and prevents the tritium device, has reduced the maintenance manpower, shortens maintenance time, reduces personnel's collective and individual dose, ensures effectively to prevent that factory building pollution and staff from receiving the risk that accidental dose shines.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A heavy water flushing and collecting device is characterized by comprising a flushing system and a collecting system,
the flushing system comprises a desalted water tank (1), an isolating valve (2) is arranged on an outlet pipeline of the desalted water tank (1), the outlet end of the outlet pipeline is connected with a first pipeline, a C rod flushing control valve (5) and a rectangular pipeline are arranged on the first pipeline, a C rod advancing control valve (7) and a C rod withdrawing control valve (8) are arranged on the rectangular pipeline, a C rod advancing hose (20) is externally connected to the C rod advancing control valve (7), a C rod withdrawing hose (22) is externally connected to the C rod withdrawing control valve (8), and a middle hose (21) is externally connected to the downstream of the rectangular pipeline;
the collection system comprises a collection tank (10) and a heavy water collection tank (11).
2. The flushing and heavy water collecting device according to claim 1, wherein a second pipeline is further connected to the outlet end, the second pipeline is connected in parallel with the first pipeline, and a mechanical seal flushing control valve (4) and a mechanical seal flushing hose (23) are arranged on the second pipeline.
3. The apparatus for flushing and collecting heavy water as claimed in claim 2, wherein a second pressure gauge is provided on said second pipeline.
4. A device for flushing and collecting heavy water according to claim 1, characterized in that said outlet line is provided with a filter (3).
5. The device for flushing and collecting heavy water according to claim 1, characterized in that a first pressure gauge (6) is arranged between said C-bar flushing control valve (5) and said rectangular pipe.
6. The device for washing and collecting heavy water according to claim 1, characterized in that said washing system is provided on the side of said frame (9) and said collecting system is provided on the lower part of said frame (9).
7. The device for washing and collecting heavy water according to claim 1, characterized in that the bottom of the heavy water collecting tub (11) is provided with rollers (111).
8. The device for washing and collecting heavy water according to claim 1, wherein the heavy water collecting barrel (11) is provided with an exhaust valve (112) and a drain valve (113) at the bottom.
9. The device for flushing and collecting heavy water according to claim 1, characterized in that the top of the heavy water collecting tank (11) is provided with a tank isolating valve (114).
10. The device for flushing and collecting heavy water according to claim 1, characterized in that said heavy water collecting tub (11) is provided with a level gauge (115).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220496485.8U CN217468004U (en) | 2022-03-09 | 2022-03-09 | Flushing and heavy water collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220496485.8U CN217468004U (en) | 2022-03-09 | 2022-03-09 | Flushing and heavy water collecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217468004U true CN217468004U (en) | 2022-09-20 |
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ID=83265292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220496485.8U Active CN217468004U (en) | 2022-03-09 | 2022-03-09 | Flushing and heavy water collecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217468004U (en) |
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2022
- 2022-03-09 CN CN202220496485.8U patent/CN217468004U/en active Active
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