CN211393923U - Million kilowatt nuclear power station deoxidization water charging system - Google Patents
Million kilowatt nuclear power station deoxidization water charging system Download PDFInfo
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- CN211393923U CN211393923U CN201921608794.4U CN201921608794U CN211393923U CN 211393923 U CN211393923 U CN 211393923U CN 201921608794 U CN201921608794 U CN 201921608794U CN 211393923 U CN211393923 U CN 211393923U
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Abstract
The utility model relates to the technical field of a nuclear power station conventional island demineralized water distribution system, in particular to a million kilowatt nuclear power station deoxidizing and water supplementing system, which comprises a water storage tank and a deaerator, wherein the water storage tank and the deaerator are communicated through a main pipeline, the main pipeline comprises a horizontal pipeline and a first vertical pipeline, the upper end of the first vertical pipeline is communicated with the deaerator, and the horizontal height of the deaerator is higher than that of the horizontal pipeline; the horizontal section pipeline is sequentially provided with a water pump and at least one first interface along the water flow direction, and the first interface is used for connecting a user pipeline; the bottom of the first vertical section of pipeline is provided with a first isolation valve, and the first isolation valve is in a closed state under a normal state. When starting the water pump, the hydraulic impact that brings is isolated with the second isolating valve of bottom to eliminate the water hammer effect, avoid the impact of water hammer effect to the first vertical section pipeline of being connected with the oxygen-eliminating device, make being connected of oxygen-eliminating device and trunk line more firm.
Description
Technical Field
The utility model relates to a conventional island demineralized water distribution system technical field of nuclear power station, concretely relates to million kilowatt level nuclear power station deoxidization water charging system.
Background
In the nuclear power field, it is generally necessary to perform an oxygen removal operation on a slightly alkaline demineralized water, and then supply the deoxidized demineralized water to a required user or equipment, and also supply the demineralized water to a user in a nuclear power area as required. Generally, a water tank for storing demineralized water is arranged at a high position, so that the demineralized water is conveniently supplied to a required user and a deaerator under the combined action of the gravity of the demineralized water and a water pump. The deaerator generally adopts the high temperature high pressure mode to carry out the deoxidization, and it occupies the volume great, consequently also generally sets up in the eminence. Wherein, the demineralized water distribution system stop the pump back at every turn, and the user uses the demineralized water, because demineralized water self action of gravity, the demineralized water can run off downwards in the vertical pipeline of deaerator below, and vertical intraductal vacuum that forms. According to the operation rule of the distribution system, the normal value of the water level of the water storage tank is 4.8-18.4 m, the pressure of the water level of 4.8m and the atmospheric pressure (about 10m water column) are added, and the upper part of the pipeline below the deaerator can form a vacuum of 1.6-15.2 m. After the secondary water pump of the demineralized water distribution system is started, a water hammer is formed on the vacuum pipeline below the deaerator, and the water hammer causes the pipeline connected with the lower end of the deaerator to vibrate and further loosen.
SUMMERY OF THE UTILITY MODEL
In order to solve the water hammer phenomenon that the deoxidization water distribution system among the prior art exists, this application provides a million kilowatt level nuclear power station deoxidization water charging system, and its aim at eliminates the influence of water hammer phenomenon to the system.
A deoxidizing and water supplementing system of a million-kilowatt nuclear power station comprises at least one water storage tank and at least one deaerator, wherein the water storage tank is communicated with the deaerator through a main pipeline, the main pipeline comprises a horizontal section pipeline and a first vertical section pipeline, the upper end of the first vertical section pipeline is communicated with the deaerator, the first vertical section pipeline is also communicated with the water storage tank through the horizontal section pipeline, and the horizontal height of the deaerator is higher than that of the horizontal section pipeline;
the horizontal section pipeline is sequentially provided with a water pump and at least one first interface along the water flow direction, and the first interface is used for connecting a user pipeline;
and a first isolation valve is also arranged at the downstream of the first interface on the main pipeline, and the first isolation valve is in a closed state under a normal state.
Specifically, a first isolation valve is arranged at the bottom of the first vertical section of pipeline, and the first isolation valve is in a closed state in a normal state.
Wherein, the deaerator is arranged at a position 20-40 meters above the horizontal section pipeline.
The horizontal section pipeline is provided with at least one branch pipeline connected with a water pump in parallel, the branch pipeline is provided with a water pump, and the branch pipeline is positioned at the upstream of the first connector.
The horizontal pipeline is provided with two branch pipelines connected with a water pump in parallel, and the two branch pipelines are respectively provided with a water pump.
The main pipeline further comprises a second vertical section pipeline, the upper end of the second vertical section pipeline is communicated with the water storage tank, and the lower end of the second vertical section pipeline is communicated with the horizontal section pipeline.
Specifically, including two storage water tanks, two storage water tanks all with the upper end intercommunication of the vertical section pipeline of second.
The water storage tank is arranged 30 meters above the horizontal section pipeline.
Further, a second isolation valve is further arranged at the upper end of the first vertical section of the pipeline, and the second isolation valve is also in a closed state in a normal state.
Preferably, the deaerator is arranged 30 meters above the horizontal section of the pipeline.
According to million kilowatt nuclear power station deoxidization water charging system of above-mentioned embodiment, it includes at least one storage water tank and oxygen-eliminating device, and storage water tank and oxygen-eliminating device pass through the trunk line intercommunication, and the trunk line includes horizontal segment pipeline and first vertical segment pipeline, and the upper end of the horizontal segment pipeline that the oxygen-eliminating device set up, its level is higher than the height of horizontal segment pipeline, is equipped with the second isolating valve in the bottom of first vertical segment pipeline, and this second isolating valve is in normally closed state. When starting the water pump, the hydraulic impact that brings is isolated with the second isolating valve of bottom to eliminate the water hammer effect, avoid the impact of water hammer effect to the first vertical section pipeline of being connected with the oxygen-eliminating device, make being connected of oxygen-eliminating device and trunk line more firm.
Drawings
FIG. 1 is a schematic structural diagram of the oxygen-removing and water-replenishing system of the present application.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
Referring to fig. 1, the embodiment provides a system for deoxidizing and replenishing water in a megawatt nuclear power station, which is used for providing a user of a nuclear electric field with required slightly alkaline demineralized water, and simultaneously providing the slightly alkaline demineralized water to a deaerator, so as to deaerate the slightly alkaline demineralized water and supply the deaerated slightly alkaline demineralized water to other equipment for use. This deoxidization water charging system includes first storage water tank 11, second storage water tank 12 and oxygen-eliminating device 3, first storage water tank 11 and second storage water tank 12 are used for saving alkaline demineralized water partially, first storage water tank 11 and second storage water tank 12 communicate with oxygen-eliminating device 3 through the trunk line, the trunk line includes horizontal segment pipeline 21 and first vertical section pipeline 22 and the vertical section pipeline 23 of second, be equipped with water pump 5 on horizontal segment pipeline 21, supply with oxygen-eliminating device 3 with demineralized water through water pump 5. In this embodiment, first storage water tank 11 and second storage water tank 12 and oxygen-eliminating device 3 all set up in the position of 30 meters height, and wherein, the department still has two spinal branch pipelines in parallel on the water pump 5 of the horizontal segment pipeline 21 of trunk line, also is equipped with a water pump on every spinal branch pipeline respectively, and the water pump is used for pump the demineralized water to oxygen-eliminating device 3 and user department. In this implementation, locate still parallelly connected two spinal branch pipelines that set up through the water pump 5 of horizontal segment pipeline 21 at the trunk line in this implementation, just so formed three parallelly connected passageways, in the course of the work, can burn out in order to prevent a water pump long-time work, through controlling this system power down, the water pump that is moving at the power down in-process at every turn stops, water pump start-up work on another passageway after about ten minutes, then all the other two water pump pause work, three water pump works in turn in proper order like this, avoided a water pump to last the work burn out, the life of water pump has been guaranteed, and the cost is saved.
The upper end of the second vertical section pipeline 23 is communicated with the first water storage tank 11 and the second water storage tank 12, the lower end of the second vertical section pipeline is communicated with the horizontal section pipeline 21, the first water storage tank 11 and the second water storage tank 12 are arranged above the horizontal section pipeline 21 at a position of 30 meters or 30-40 meters, and therefore the desalted water in the first water storage tank 11 and the second water storage tank 12 can be discharged into the horizontal section pipeline under the action of gravity and has certain water pressure, the deaerator 3 is favorably conveyed to the deaerator 3, and the working pressure of the water pump is reduced.
Wherein, the upper end and the oxygen-eliminating device 3 intercommunication of the first vertical section pipeline 22 of trunk line, and the upper end of the first vertical section pipeline 22 of trunk line is close to oxygen-eliminating device 3 and installs second isolating valve 7, and this second isolating valve 7 is in the closed condition under the normality, and when oxygen-eliminating device 3 needs the moisturizing, this second isolating valve 7 is opened. A first interface 4 is also arranged at the downstream of the main pipe water pump 5, and a user pipe 41 is communicated with the first interface 4 and is used for providing the slightly alkaline demineralized water for other users or equipment. In other embodiments, a plurality of similar user conduits 41 may be provided as desired. In the process of the desalinized water distribution system power down, after the water pump of work stopped, the user used the desalinized water, because the effect of demineralized water self gravity, the desalinized water can run off downwards in the first vertical section pipeline 22 in oxygen-eliminating device 3 below, forms vacuum state in the first vertical section pipeline 22. According to the operation rule of the distribution system, the normal value of the water level of the water storage tank is 4.8-18.4 m, the pressure of the water level of 4.8m and the atmospheric pressure (about 10m water column) act, and a vacuum pipeline with the length of 1.6-15.2 m is formed at the upper part of the first vertical section of pipeline 22 below the deaerator. After the water pump 5 of demineralized water distribution system starts, form the water hammer in the vacuum pipe that forms in oxygen-eliminating device 3 below, the water hammer leads to the first vertical section pipeline 22 of 3 lower extreme connections of oxygen-eliminating device to take place vibrations, and then the pine takes off. In this embodiment, lower extreme at first vertical section pipeline 22 is equipped with first isolating valve 6, be in the off-state under this first isolating valve 6 normality, first isolating valve 6 plays isolated effect to the impact that water pressure brought when water pump 5 during operation like this, make and keep filling up the state of water in the first vertical section pipeline 22 of first isolating valve 6 upper end, slowly open first isolating valve 6 again when needing to give oxygen-eliminating device 3 moisturizing, just so avoid forming the water hammer effect in first vertical section pipeline 22, thereby avoid the upper end and the oxygen-eliminating device 3 of the first vertical section pipeline 22 of trunk line to drop.
In other embodiments, the first isolation valve 6 may also be disposed on the horizontal pipe 21, as long as the first isolation valve 6 is disposed at the downstream of the first connector 4, the first isolation valve 6 is normally closed, so that the first vertical pipe 22 at the downstream of the first isolation valve 6 is kept full of water, and thus when the water pump 5 works, the first isolation valve 6 plays an isolation role in impact on water pressure, so as to avoid forming a water hammer effect in the first vertical pipe 22, that is, continuous impact on the first vertical pipe 22 by the water hammer effect is avoided, and the first vertical pipe 22 is prevented from falling off, so that the service life of the oxygen removal and water replenishment system is ensured.
In the embodiment, the first isolation valve 6 and the second isolation valve 7 both adopt turbine butterfly valves, for example, the first isolation valve 6 and the second isolation valve 7 can adopt the turbine butterfly valve with the model number of D371X-16C, the nominal pressure of the turbine butterfly valve is 1.6MPa, and the applicable temperature is less than or equal to 120 ℃; the SER system has the design pressure of 0.4MPa and the design temperature of 50 ℃, so that the system can normally work in any environment by adopting the turbine butterfly valve of the type.
It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.
Claims (10)
1. The deoxidizing and water supplementing system of the million-kilowatt nuclear power station is characterized by comprising at least one water storage tank and at least one deaerator, wherein the water storage tank is communicated with the deaerator through a main pipeline, the main pipeline comprises a horizontal pipeline and a first vertical pipeline, the upper end of the first vertical pipeline is communicated with the deaerator, the first vertical pipeline is also communicated with the water storage tank through the horizontal pipeline, and the horizontal height of the deaerator is higher than that of the horizontal pipeline;
the horizontal section pipeline is sequentially provided with a water pump and at least one first interface along the water flow direction, and the first interface is used for connecting a user pipeline;
and a first isolation valve is also arranged at the downstream of the first interface on the main pipeline, and the first isolation valve is in a closed state under a normal state.
2. The oxygen-scavenging water replenishment system of claim 1 wherein the first isolation valve is disposed at the bottom of the first vertical segment of tubing, the first isolation valve being normally closed.
3. The oxygen-removing and water-replenishing system of claim 2, wherein the oxygen remover is arranged 20-40 meters above the horizontal section pipeline.
4. The oxygen-removing and water-replenishing system of claim 1, wherein at least one branch pipe is connected in parallel to the horizontal pipe, and the branch pipe is provided with a water pump and is located upstream of the first connector.
5. The oxygen-removing and water-replenishing system of claim 1, wherein two branch pipes are connected in parallel at the position where the water pump is arranged on the horizontal section pipe, and one water pump is arranged on each of the two branch pipes.
6. The oxygen-removing and water-replenishing system of claim 1, wherein said main conduit further comprises a second vertical segment of conduit, the upper end of said second vertical segment of conduit being in communication with said water storage tank and the lower end thereof being in communication with said horizontal segment of conduit.
7. The oxygen-removing and water-replenishing system of claim 6, wherein there are two water storage tanks, and both of said two water storage tanks are communicated with the upper end of said second vertical segment of pipe.
8. The oxygen-scavenging water replenishment system of claim 7 wherein the water storage tank is disposed 30 meters above the horizontal segment of piping.
9. The oxygen-removing and water-replenishing system of claim 1, wherein a second isolation valve is further arranged at the upper end of the first vertical section of pipeline, and the second isolation valve is also in a closed state under normal conditions.
10. The oxygen-removing and water-replenishing system of claim 3, wherein said oxygen remover is disposed 30 meters above said horizontal length of tubing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921608794.4U CN211393923U (en) | 2019-09-25 | 2019-09-25 | Million kilowatt nuclear power station deoxidization water charging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921608794.4U CN211393923U (en) | 2019-09-25 | 2019-09-25 | Million kilowatt nuclear power station deoxidization water charging system |
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| Publication Number | Publication Date |
|---|---|
| CN211393923U true CN211393923U (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921608794.4U Active CN211393923U (en) | 2019-09-25 | 2019-09-25 | Million kilowatt nuclear power station deoxidization water charging system |
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| CN (1) | CN211393923U (en) |
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