CN216311356U - Auxiliary steam condensation water recovery system for low-power operation stage of high-temperature reactor - Google Patents
Auxiliary steam condensation water recovery system for low-power operation stage of high-temperature reactor Download PDFInfo
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- CN216311356U CN216311356U CN202122888598.0U CN202122888598U CN216311356U CN 216311356 U CN216311356 U CN 216311356U CN 202122888598 U CN202122888598 U CN 202122888598U CN 216311356 U CN216311356 U CN 216311356U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model provides an auxiliary steam condensate water recovery system for a high-temperature reactor at a low-power operation stage, which belongs to the technical field of nuclear power equipment and comprises the following components: the condensed water drainage pipe is communicated with the condenser and the discharge pool, and is provided with a sampling valve and a discharge valve; one end of the condensed water recovery pipe is connected to the condensed water drainage pipe and is positioned at the upstream of the discharge valve, the other end of the condensed water recovery pipe is communicated to a deaerator of the auxiliary electric boiler, and a first isolation valve is arranged on the condensed water recovery pipe; according to the auxiliary steam condensate recovery system in the low-power operation stage of the high-temperature reactor, the sampling valve is arranged on the condensate water drainage pipe and used for detecting condensate water discharged by the condenser, the condensate water recovery pipe is communicated with the front of the discharge valve on the condensate water drainage pipe, and the condensate water with qualified detected water quality is recovered to the deaerator of the auxiliary electric boiler through the condensate water recovery pipe, so that excessive condensate water waste is avoided, working media are saved, and the cost is saved.
Description
Technical Field
The utility model relates to the technical field of nuclear power equipment, in particular to an auxiliary steam condensation water recovery system for a high-temperature reactor at a low-power operation stage.
Background
When the high-temperature reactor operates at low power, the auxiliary electric boiler is required to provide auxiliary steam of about 27t/h to the two-loop deaerator and the high-pressure heater so as to heat the feed water to 160 ℃ and supply the feed water to the steam generator.
And after the auxiliary steam enters the two-loop deaerator and the high-pressure heater to heat the feed water, the condensed water is collected into a condenser hot well, and the excessive condensed water is discharged to the two-loop discharge monitoring pool through a condenser high-liquid-level return water pipe.
However, because the high-temperature reactor has long low-power operation time (the low-power debugging period is about 150 days, and the low-power operation in the starting and stopping stages of the unit is also performed in the manner), the amount of the auxiliary steam used is large, and if the auxiliary steam is directly discharged, a large amount of desalted water working medium is lost, so that the operation cost of a power plant is increased.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model aims to overcome the defect of excessive loss of auxiliary steam condensate water in the low-power operation stage of the high-temperature reactor in the prior art, and provides an auxiliary steam condensate water recovery system in the low-power operation stage of the high-temperature reactor.
In order to solve the above technical problem, the present invention provides an auxiliary steam condensate recovery system at a low power operation stage of a high temperature reactor, comprising:
the condensed water drainage pipe is communicated with the condenser and the discharge pool, and is provided with a sampling valve and a discharge valve;
and one end of the condensed water recovery pipe is connected to the condensed water drainage pipe and is positioned at the upstream of the discharge valve, the other end of the condensed water recovery pipe is communicated to a deaerator of the auxiliary electric boiler, and a first isolation valve is arranged on the condensed water recovery pipe.
Optionally, the sampling valve is disposed between the drain valve and an inlet of the condensate recovery pipe.
Optionally, an outlet of the condensed water recovery pipe is communicated with a water return pipe of the heating station, and a first check valve communicated towards the outlet is arranged on the condensed water recovery pipe.
Optionally, a second isolation valve is arranged on the water return pipe of the heating station before the water return pipe is communicated with the outlet of the condensed water recovery pipe.
Optionally, a second check valve which is conducted towards the direction of the auxiliary electric boiler is arranged on the water return pipe of the heating station between the second isolation valve and the outlet of the condensed water recovery pipe.
The technical scheme of the utility model has the following advantages:
1. according to the auxiliary steam condensate recovery system in the low-power operation stage of the high-temperature reactor, the sampling valve is arranged on the condensate water drainage pipe and used for detecting condensate water discharged by the condenser, the condensate water recovery pipe is communicated with the front of the discharge valve on the condensate water drainage pipe, and the condensate water with qualified detected water quality is recovered to the deaerator of the auxiliary electric boiler through the condensate water recovery pipe, so that excessive condensate water waste is avoided, working media are saved, and the cost is saved.
2. According to the auxiliary steam condensate water recovery system in the low-power operation stage of the high-temperature reactor, the outlet of the condensate water recovery pipe is communicated with the water return pipe of the heating station, and the condensate water is recovered to the deaerator of the auxiliary electric boiler by means of the water return pipe of the heating station, so that the cost of pipeline equipment is saved.
3. The temperature of the recovered condensate is about 35 ℃, the normal temperature of the desalted water which needs to be continuously supplemented to the auxiliary electric boiler is normal temperature, and the steam condensate with higher temperature can reduce the heating steam consumption of the deaerator of the boiler after being recovered, thereby saving energy.
4. Other nuclear power units adopt the mode of recovering the auxiliary steam condensate water in the low-power operation stage to the conventional island demineralized water tank, and although the mode also avoids the waste of working media, the PH value of the working media in the two loops is generally 9-10, and the working media enter the demineralized water tank, so that the PH value of the demineralized water in the demineralized water tank is increased, and water cannot be supplied to users needing pure demineralized water, such as a laboratory room, a shower room and the like. The method has an advantage of preventing contamination of the demineralized water tank.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a front view of one implementation provided in an example of the utility model.
Fig. 2 is a front view of another embodiment provided in an example of the present invention.
Description of reference numerals:
1. a condenser; 2. a condensed water discharge pipe; 3. draining the water tank; 4. a condensate recovery pipe; 5. an auxiliary electric boiler; 6. a heating station; 7. a water return pipe; 8. a first check valve; 9. a second check valve; 10. a sampling valve; 11. a discharge valve; 12. a first isolation valve; 13. a second isolation valve.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The steam condensate water recovery system is assisted to high temperature reactor low power operation stage that this embodiment provided for at high temperature reactor low power operation stage, retrieve and assist steam condensate water, avoid assisting the too big problem of steam condensate water loss volume.
As shown in fig. 1, a specific implementation manner of the auxiliary steam condensate recovery system in the low-power operation stage of the high-temperature reactor provided in this embodiment includes: condensate water drainage pipe 2 and condensate water recovery pipe 4, condensate water drainage pipe 2 intercommunication condenser 1 and discharge water pool 3, be provided with sample valve 10 and discharge valve 11 on the condensate water drainage pipe 2, open behind the discharge valve 11, can discharge the condensate water in the condenser 1 towards discharge water pool 3, open behind the sample valve 10, can carry out the quality of water sample to the condensate water that flows through condensate water drainage pipe 2. One end of the condensed water recovery pipe 4 is connected to the condensed water discharge pipe 2 and is positioned at the upstream of the discharge valve 11, the other end of the condensed water recovery pipe 4 is communicated to a deaerator of the auxiliary electric boiler 5, and a first isolation valve 12 is arranged on the condensed water recovery pipe 4; and opening the first isolation valve 12, closing the discharge valve 11 on the condensed water discharge pipe 2, and conveying and recovering the condensed water in the condenser 1 towards a deaerator of the auxiliary electric boiler 5.
As shown in fig. 1, in the auxiliary steam condensate recovery system in the low power operation stage of the high temperature reactor provided in this embodiment, in the initial stage of the auxiliary electric boiler 5 performing the pipe flushing, the first isolation valve 12 on the condensate recovery pipe 4 is closed, and the condensate in this stage is not recovered. When the condenser 1 needs to drain, the part of the condensed water is discharged to the discharge water tank 3 by opening the discharge valve 11 on the condensed water discharge pipe 2, and the condensed water in the condensed water discharge pipe 2 is sampled in stages by opening the sampling valve 10 in the discharging process. When the condensed water in the condensed water drainage pipe 2 is sampled and detected, and the quality of the condensed water in the condensed water drainage pipe 2 is qualified, the first isolation valve 12 on the condensed water recovery pipe 4 is opened, the discharge valve 11 on the condensed water drainage pipe 2 is closed, and the condensed water in the condenser 1 is recovered to the deaerator of the auxiliary electric boiler 5.
The steam condensate recovery system is assisted to low power operation stage of high temperature heap that this embodiment provided, be provided with sample valve 10 on condensate drainpipe 2, a condensate for detect 1 exhaust condensate of condenser, the intercommunication has condensate recovery pipe 4 before the blow-off valve 11 on condensate drainpipe 2, will retrieve to the oxygen-eliminating device of supplementary electric boiler 5 through condensate recovery pipe 4 through the qualified condensate of detection quality of water, thereby avoided too much condensate extravagant, save working medium, practice thrift the cost.
As shown in fig. 1, in the auxiliary steam condensate recovery system in the low-power operation stage of the high-temperature reactor provided by this embodiment, the sampling valve 10 is disposed between the discharge valve 11 and the inlet of the condensate recovery pipe 4, and this arrangement mode can ensure that after the quality of the condensate in the condensate discharge pipe 2 is completely qualified, the condensate recovery pipe 4 is used for recovery, so as to avoid the unqualified condensate from flowing back to the deaerator of the auxiliary electric boiler 5. In addition, as an alternative embodiment, the sampling valve 10 may be disposed before the condensed water discharge pipe 2 is connected to the condensed water recovery pipe 4, and this arrangement may detect the quality of the condensed water in stages during the process of recovering the condensed water through the condensed water recovery pipe 4, and may discharge the condensed water in time when the quality of the condensed water is not satisfactory. Further, a plurality of sampling valves 10 may be provided in the condensed water discharge pipe 2.
As shown in fig. 2, in another embodiment of the auxiliary steam condensate recovery system in the low power operation stage of the high temperature reactor provided in the embodiment, the outlet of the condensate recovery pipe 4 is communicated with the water return pipe 7 of the heating station 6, the condensate recovery pipe 4 is provided with a first check valve 8 communicated towards the outlet, and the first check valve 8 ensures that the condensate flows in the condensate recovery pipe 4 only towards the auxiliary electric boiler 5, so as to avoid the problem of the backflow of the condensate in the condensate recovery pipe 4 caused by the excessive water pressure in the water return pipe 7 of the heating station 6. The steam condensate recovery system is assisted to low-power operation stage of high temperature heap that this embodiment provided, with the export intercommunication of condensate recovery pipe 4 on the wet return 7 of heating station 6, borrow wet return 7 of heating station 6 and retrieve the condensate to in the oxygen-eliminating device of supplementary electric boiler 5 to the cost of piping installation has been saved.
As shown in fig. 2, in the auxiliary steam condensate recovery system for the low-power operation stage of the high-temperature reactor provided for the embodiment, a second isolation valve 13 is arranged on the water return pipe 7 of the heating station 6 before being communicated with the outlet of the condensate recovery pipe 4, and the second isolation valve 13 is used for controlling a water return switch of the heating station 6. On the wet return 7 of heating station 6 second isolation valve 13 with between the export of condensate recovery pipe 4, be provided with the second check valve 9 that switches on towards auxiliary electric boiler 5 direction, this second check valve 9 is used for guaranteeing that the return water in wet return 7 flows towards auxiliary electric boiler 5's direction all the time to avoid because the too big problem of the interior return water of wet return 7 that leads to of condensate water pressure in condensate recovery pipe 4 is adverse current.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the utility model may be made without departing from the scope of the utility model.
Claims (5)
1. A high temperature reactor low power operation stage assists vapour condensate water recovery system which characterized in that includes:
the condensed water drainage pipe (2) is communicated with the condenser (1) and the discharge water tank (3), and a sampling valve (10) and a discharge valve (11) are arranged on the condensed water drainage pipe (2);
and one end of the condensed water recovery pipe (4) is connected to the condensed water drainage pipe (2) and is positioned at the upstream of the discharge valve (11), the other end of the condensed water recovery pipe is communicated to a deaerator of the auxiliary electric boiler (5), and a first isolation valve (12) is arranged on the condensed water recovery pipe (4).
2. The secondary steam condensate recovery system of the low power operation stage of the high temperature reactor according to claim 1, wherein the sampling valve (10) is disposed between the drain valve (11) and the inlet of the condensate recovery pipe (4).
3. The auxiliary steam condensate water recovery system in the low-power operation stage of the high-temperature reactor according to claim 1 or 2, wherein an outlet of the condensate water recovery pipe (4) is communicated with a water return pipe (7) of the heating station (6), and a first check valve (8) communicated towards the outlet is arranged on the condensate water recovery pipe (4).
4. The auxiliary steam condensate water recovery system in the low power operation stage of the high temperature reactor according to claim 3, wherein a second isolation valve (13) is provided on the return pipe (7) of the heating station (6) before communicating with the outlet of the condensate water recovery pipe (4).
5. The auxiliary steam condensate water recovery system in the low-power operation stage of the high-temperature reactor according to claim 4, wherein a second check valve (9) which is communicated towards the auxiliary electric boiler (5) is arranged on the water return pipe (7) of the heating station (6) between the second isolation valve (13) and the outlet of the condensate water recovery pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122888598.0U CN216311356U (en) | 2021-11-22 | 2021-11-22 | Auxiliary steam condensation water recovery system for low-power operation stage of high-temperature reactor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122888598.0U CN216311356U (en) | 2021-11-22 | 2021-11-22 | Auxiliary steam condensation water recovery system for low-power operation stage of high-temperature reactor |
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| CN216311356U true CN216311356U (en) | 2022-04-15 |
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| CN202122888598.0U Active CN216311356U (en) | 2021-11-22 | 2021-11-22 | Auxiliary steam condensation water recovery system for low-power operation stage of high-temperature reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114873665A (en) * | 2022-05-06 | 2022-08-09 | 南京宏唐控制工程有限公司 | Automatic control system for condensate polishing regeneration based on computer vision technology |
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2021
- 2021-11-22 CN CN202122888598.0U patent/CN216311356U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114873665A (en) * | 2022-05-06 | 2022-08-09 | 南京宏唐控制工程有限公司 | Automatic control system for condensate polishing regeneration based on computer vision technology |
| CN114873665B (en) * | 2022-05-06 | 2024-01-12 | 南京宏唐控制工程有限公司 | Condensate polishing regeneration automatic control system based on computer vision technology |
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