CN209000555U - A kind of coolant hydrogenation system for small-sized heap - Google Patents
A kind of coolant hydrogenation system for small-sized heap Download PDFInfo
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- CN209000555U CN209000555U CN201821366486.0U CN201821366486U CN209000555U CN 209000555 U CN209000555 U CN 209000555U CN 201821366486 U CN201821366486 U CN 201821366486U CN 209000555 U CN209000555 U CN 209000555U
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- hydrogen
- coolant
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- desalination water
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model discloses a kind of coolant hydrogenation systems for small-sized heap, it is related to nuclear-power reactor coolant hydrogenation system field, this is used for the coolant hydrogenation system of small-sized heap, comprising: desalination water supply system, desalination water supply, water pump including successively piping connection；Desalination water loop, entrance connect the desalination water supply system outlet, outlet connection coolant system entrance；Hydrogen-storing device, outlet are passed through the desalination water loop.The coolant hydrogenation system principle for small-sized heap of the utility model is simple, compact-sized, and suitable for the limited small-sized heap application that boron is especially not added in space, strong operability, hydrogenation pressure is larger, and delivery safety is efficient.
Description
Technical field
The utility model relates to nuclear-power reactor coolant hydrogenation system fields, and in particular to a kind of for the cold of small-sized heap
But agent hydrogenation system.
Background technique
Coolant meeting during compressed water reactor nuclear power Power operation, in reactor coolant loop (hereinafter referred to as primary Ioops)
Hydrogen and oxygen are decomposed under radiation parameter, oxygen can aggravate material corrosion, increase radiation while reducing equipment dependability
Property activation products.Nuclear power plant generally uses primary Ioops hydrogen addition technology at present, by adding hydrogen into coolant and maintaining centainly cold
But the mode of agent hydrogen concentration inhibits the irradiation of water to decompose.
Land nuclear power station uses plus boron control reactivity substantially in the prior art, during nuclear power station Power operation, hydrogen by
It is let out under and adjusts boron and degasification and waste is larger, consider biggish steam generator leakage benchmark, in addition to maintain hydrogen concentration
Primary Ioops add hydrogen to be continuous addition manner.
Existing hydrogen addition technology is divided into two major classes, and one kind is to hold control case gas phase injection hydrogen by changing appearance system, holds control case top
The vapour coolant of portion's spray head and the hydrogen for holding control case gas phase, which come into full contact with, enables hydrogen to be sufficiently dissolved into coolant, adds
Coolant after hydrogen controls calmly lower box part discharge, so that complete coolant plus hydrogen, adds hydrogen amount to hold the gas phase of control case by control
Pressure is completed.But by adjusting or the adjusting of control gaseous pressure or maintenance coolant pressure, time-consuming and degree of regulation
Low, the gas covering variety exchanging of unit starting and shutdown stage appearance control case is cumbersome.Another kind of plus hydrogen is straight by high pressure gas cylinder
It connects and fills pipeline note hydrogen in Xiang Huarong system, there is researcher to propose independent of the high pressure continuously hydrogen adding system for holding control case, directly
It connects and fills the different operating condition note hydrogen of pipeline point upwards, but the system is more demanding to the degree of regulation of hydrogen, due in charging stream pipeline
Fluid temperature (F.T.) be greater than 250 DEG C, pressure is 15.5MPa abs, and to guarantee that hydrogen can inject, hydrogen cylinder needs higher pressure, no
Then gas cylinder utilization rate is lower or frequent replacement gas cylinder causes economy not high.Separately there is researcher to propose modular hydrogenation plant,
The modular hydrogenation plant of proposition have the advantages that it is reliable for operation, install, debug, use and repair equal safe ready, but should
Structure is complicated for device deaerating plant, takes up space big.
In conclusion needing that a kind of simple process, hydrogen consumption is smaller, precision controlling is simple, occupied space is suitable at present, fit
Coolant hydrogenation system for small-sized heap reality of work.
Utility model content
In view of the deficiencies in the prior art, the purpose of this utility model is to provide a kind of coolings for small-sized heap
Agent hydrogenation system can solve the problems, such as that existing hydrogen addition technology hydrogen consumption is excessive, hydrogenation technique is complicated and control accuracy requirement is higher.
To achieve the above objectives, the technical scheme adopted by the utility model is that:
A kind of coolant hydrogenation system for small-sized heap, comprising:
Desalination water supply system, desalination water supply and water pump including successively piping connection；
Desalination water loop, entrance connect the desalination water supply system outlet, and outlet connects coolant system entrance,
The desalination water loop includes for the temporary transferring box that hydrogen is added；
Hydrogen-storing device, outlet are passed through the demineralized water circuit lines before the transferring box.
Based on the above technical solution, the desalination water loop includes the first branch parallel with one another and second
Desalination water isolation valve is arranged in road, the first branch, and the second branch sets gradually vent entrance openings valve, transferring box and ventilates out
Mouth valve.
Based on the above technical solution, the hydrogen-storing device outlet passes sequentially through piping connection cylinder isolation valve, gas
Bottle screw down nonreturn valve, finally accesses the second branch between the vent entrance openings valve and the transferring box.
Based on the above technical solution, the transferring box is vertical type cylinder type high-pressure bottle, and bottom is equipped with hydrogen
Import and desalination water out, top connect the aeration vent valve inlet.
Based on the above technical solution, the coolant system is equipped with molten hydrogen instrument, sets on the transfer box body
There is pressure gauge.
Based on the above technical solution, the hydrogen-storing device includes being set to the hydrogen-storing device exit and bore
Adjustable connecting component, and removably it is connected to the high pressure gas cylinder of the connecting component.
Based on the above technical solution, the system also includes hydrophobic pipeline, the hydrophobic pipeline entrance accesses institute
Second branch is stated, and access port is between the vent entrance openings valve and the transferring box.
Based on the above technical solution, the hydrophobic pipeline includes drain valve and the U-shaped sealing of successively piping connection
Pipe.
Compared with the prior art, the advantages of the utility model are:
(1) the coolant hydrogenation system principle for small-sized heap of the utility model is simple, compact-sized, is suitable for space
Limited small-sized heap application, the loss amount of hydrogen is less when adding boron during the work time, it is only possible to by coolant loss or
Degasification and dissipate, be finally by desalination water supply system make-up water source, desalination water supply system is intermitten service mode, is added
Hydrogen production device applicability is extensive, strong operability, and hydrogenation system is parallel to desalination water supply system and is located at exit of pump, adds hydrogen
Pressure is larger, and delivery safety is efficient.
(2) the coolant hydrogenation system mesohigh hydrogen cylinder for small-sized heap of the utility model from pressure mode by conveying
Required hydrogen is to transferring box, and desalination water supply system is without operation, and desalination water supply system is low-pressure state, hydrogen cylinder benefit at this time
With rate height.If later period gas cylinder residual compression is less than required transferring box pressure, hydrogen can be infused several times to guarantee required addition
Amounts of hydrogen, without borrowing external force and gas cylinder utilization rate is higher.
(3) U-shaped by using transferring box drain pipe in the coolant hydrogenation system for small-sized heap of the utility model
Pipe sealing structure avoids a possibility that leaking into hydrogen, and hydrogen explosion risk is low, and equipment safety performance is stronger.
(4) hydrogen is largely infused at the beginning of the coolant hydrogenation system for small-sized heap of the utility model is for reactor cold start-up
The common operating condition of two kinds of hydrogen of note is supplemented during operation and Power operation due to loss, Different treatments are provided, applicable working condition is wide
It is general.
Detailed description of the invention
Fig. 1 is the structural schematic diagram in the utility model embodiment for the coolant hydrogenation system of small-sized heap.
In figure: 1- hydrogen cylinder, 2- transferring box, 3- water pump, 4- cylinder isolation valve, 5- gas cylinder screw down nonreturn valve, 6- demineralized water
Isolating valve, 7- vent entrance openings valve, 8- aeration vent valve, 9- drain valve, 10-U type seal pipe, 11- desalination water supply, 12-
Coolant system, the molten hydrogen instrument of 13-, 14- pressure gauge, 15- desalination water loop.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
Shown in Figure 1, the utility model embodiment provides a kind of coolant hydrogenation system for small-sized heap, comprising:
Desalination water supply system, desalination water supply 11, water pump 3 including successively piping connection；Desalination water loop 15,
Its entrance connects the outlet of desalination water supply system, outlet connection 12 entrance of coolant system；Hydrogen-storing device, outlet, which is passed through, to remove
Brine loop 15.
In one embodiment, desalination water loop 15 includes the first branch and second branch parallel with one another, the first branch
Desalination water isolation valve 6 is set, and two pipelines of gas circuit and desalination water lines are switched by desalination water isolation valve 6；Second branch is successively
Vent entrance openings valve 7, transferring box 2 and aeration vent valve 8 are set.It is set as passing sequentially through pipe specifically, hydrogen-storing device can be exported
Road connects cylinder isolation valve 4, gas cylinder screw down nonreturn valve 5, described second be finally passed through between vent entrance openings valve 7 and transferring box 2
Road.
In order to ensure the stable operation of transferring box 2, defeated hydrogen can be forced down certainly by hydrogen-storing device and ensure hydrogen by playing it
The effect of stablizing input, can set transferring box 2 to vertical type cylinder type high-pressure bottle, and 2 bottom of transferring box be equipped with hydrogen into
Mouth, desalination water out connect the entrance of aeration vent valve 8 at the top of transferring box 2.When necessary transferring box 2 can also another indwelling other
Interface, for injecting other chemical agents to control coolant water quality.
For the hydrogen concentration for flexibly monitoring coolant in hydrogenation system, the accuracy and precision for adding hydrogen control are ensured, it can be cold
Molten hydrogen instrument 13 is but set in agent system 12；Pressure gauge 14 is set on 2 cabinet of transferring box, and the pressure for monitoring hydrogen is to reflect
The volume of hydrogen.
In a preferred embodiment, hydrogen-storing device includes that be set to the hydrogen-storing device exit, bore adjustable
Connecting component and the High Pressure Hydrogen gas cylinder 1 for being removably connected to connecting component.This set structure can be ensured according to hydrogen usage
Demand configures type selecting, can more renew bottle after hydrogen is finished, and is convenient for actual use demand.
Can hydrophobic pipeline also be set, the institute between the hydrophobic pipeline entrance and the vent entrance openings valve and the transferring box
Second branch is stated to be connected.In the present embodiment, hydrophobic pipeline includes the drain valve 9 and U-shaped seal pipe 10 of successively piping connection, is being opened
Water seal is formed in U-shaped seal pipe 10 by operation after beginning work, hydrogen generation leakage or air in pipeline is avoided to be mixed into pipeline
So that hydrogen purity is not high, hydrogen explosion risk is reduced.
In the coolant hydrogenation system course of work for small-sized heap in the present embodiment, desalination water segregation when normal moisturizing
Valve 6 is open state, and cylinder isolation valve 4, gas cylinder screw down nonreturn valve 5, vent entrance openings valve 7, aeration vent valve 8, drain valve 9 are to close
Closed state needs to add above valve state when hydrogen to become inverse state；Gas cylinder screw down nonreturn valve 5 can effectively prevent desalination aqueous reflux
Into hydrogen cylinder, the refluence phenomenon after the decompression of demineralized water side, desalination water supply system 11 is can be effectively prevented in desalination water isolation valve 6
Demineralized water discontinuously is provided to coolant system 12 on demand or adds hydrogen, provides injection power by water pump 3.
The utility model also provides a kind of small-sized reactor coolant method of hydrotreating based on above system, can be used for reactor
Hydrogen is mended at the beginning of starting plus during hydrogen and Power operation, method and step is unanimous on the whole under two kinds of operating conditions.
Specifically, at the beginning of reactor start-up system water-filling with plus hydrogen cooperation operation so that the molten hydrogen concentration of coolant is reached requirement
Value, water pump 3 are manual start stop operation；The supplement of demineralized water is automatically controlled by voltage-stablizer water level signal during Power operation, adds hydrogen
For manual operation, the molten hydrogen concentration of coolant is monitored on-line to determine whether need to add according to the molten hydrogen instrument 14 of coolant system 12
Hydrogen.Specific step is as follows:
At the beginning of reactor start-up, when filling demineralized water process later period coolant heats up, water pump 3 is manual start stop operation, is stopped
After water pump, vent entrance openings valve 7 and aeration vent valve 8 are closed, opens drain valve 9, raw water emptying will be remained in transferring box 2, until
Drain valve 9 is closed after being no longer discharged after bend pipe, raw water to be remained forms sealing at U-shaped seal pipe 10；Open cylinder isolation valve 4
With gas cylinder screw down nonreturn valve 5, hydrogen is closed when pressure gauge 14 to calculating required pressure value by being delivered to transferring box 2 from pressure
The connected cylinder isolation valve 4 of hydrogen cylinder 1 and gas cylinder screw down nonreturn valve 5, turn off desalination water isolation valve 6；Subsequent start-up water pump will
Hydrogen injection coolant system 12 repeats to open gas if molten hydrogen instrument 14 shows the upper limit value that hydrogen reading not up to requires
Water pump 3 plus hydrogen are then turned on after bottle isolating valve 4 plus hydrogen, until molten hydrogen concentration, which reaches requirement limit value i.e., terminates to add hydrogen, system restore to
Stand-by state.
During reactor capability is run, when the molten hydrogen concentration of coolant is up to preset lower limit value, in next automatic benefit
Before filling demineralized water, with reactor start-up at the beginning of implement above-mentioned same operation and add hydrogen, injection when subsequent hydrogen starts automatically with water pump
Coolant system, hydrogen additive amount needed for its concentration is increased to upper limit value as lower limit value when mending hydrogen every time should be suitable.
In the present embodiment, the desalination water supply system that system provides is the water of deoxygenation, and the purpose for adding hydrogen is anti-
It answers and coolant irradiation is inhibited to generate oxygen during stack operation, as long as coolant hydrogen concentration controls the coolant dissolved oxygen in effective range
Amount will certainly be controlled preferably, and rate of water make-up and the frequency are less during Power operation, at the beginning of mending hydrogen every time than reactor start-up
Plus hydrogen amount be much smaller.
In practical applications, High Pressure Hydrogen gas cylinder 1 is directlyed proportional to the Hydrogen Vapor Pressure in transferring box 2 to hydrogen volume, when defeated
During sending hydrogen, when the reading of transferring box pressure gauge 14 is close to desirable value, it can be adjusted by adjusting 5 aperture of gas cylinder screw down nonreturn valve
Hydrogen flowing quantity is saved to avoid adding hydrogen amount excessive.After oneself pressure of hydrogen is delivered to transferring box 2 in hydrogen cylinder 1, the gas pressure in gas cylinder
Reduce with hydrogen volume, and the amounts of hydrogen of required addition is the value that determines according to required concentration calculation, required pressure in transferring box
Value is also definite value, when the level pressure value needed for the Hydrogen Vapor Pressure of remaining gas cylinder adds case than hydrazine is low, is unsatisfactory for gas cylinder and presses conveying certainly
Hydrogen can be delivered to transferring box several times at this time by condition, and pressure gauge 14 is shown as lower pressure value, repeats starting small pump
3 complete note hydrogen.
The utility model is not limited to above embodiment, for those skilled in the art, not
Under the premise of being detached from the utility model principle, several improvements and modifications can also be made, these improvements and modifications are also considered as this reality
Within novel protection scope.The content being not described in detail in this specification belongs to well known to professional and technical personnel in the field
The prior art.
Claims (8)
1. a kind of coolant hydrogenation system for small-sized heap characterized by comprising
Desalination water supply system, desalination water supply and water pump including successively piping connection；
Desalination water loop, entrance connect the desalination water supply system outlet, and connection coolant system entrance in outlet is described
Desalination water loop includes for the temporary transferring box that hydrogen is added；
Hydrogen-storing device, outlet are passed through the demineralized water circuit lines before the transferring box.
2. being used for the coolant hydrogenation system of small-sized heap as described in claim 1, it is characterised in that: the desalination water loop packet
The first branch and second branch parallel with one another are included, desalination water isolation valve is arranged in the first branch, and the second branch is successively
Vent entrance openings valve, transferring box and aeration vent valve are set.
3. being used for the coolant hydrogenation system of small-sized heap as claimed in claim 2, it is characterised in that: the hydrogen-storing device outlet
Piping connection cylinder isolation valve, gas cylinder screw down nonreturn valve are passed sequentially through, the vent entrance openings valve and the transferring box are finally accessed
Between the second branch.
4. being used for the coolant hydrogenation system of small-sized heap as claimed in claim 2, it is characterised in that: the transferring box is vertical
Cylindrical type high-pressure bottle, bottom are equipped with hydrogen inlet and desalination water out, and top connects the aeration vent valve inlet.
5. being used for the coolant hydrogenation system of small-sized heap as claimed in claim 2, it is characterised in that: the coolant system is set
There is molten hydrogen instrument, the transfer box body is equipped with pressure gauge.
6. being used for the coolant hydrogenation system of small-sized heap as claimed in claim 2, it is characterised in that: the hydrogen-storing device includes
It is set to the hydrogen-storing device exit and the adjustable connecting component of bore, and is removably connected to the connecting component
High pressure gas cylinder.
7. the coolant hydrogenation system for small-sized heap as described in claim 2-6 any one, it is characterised in that: the system
System further includes hydrophobic pipeline, and the hydrophobic pipeline entrance accesses the second branch, and access port is located at the vent entrance openings valve
Between the transferring box.
8. being used for the coolant hydrogenation system of small-sized heap as claimed in claim 7, it is characterised in that: the hydrophobic pipeline includes
The successively drain valve of piping connection and U-shaped seal pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821366486.0U CN209000555U (en) | 2018-08-23 | 2018-08-23 | A kind of coolant hydrogenation system for small-sized heap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821366486.0U CN209000555U (en) | 2018-08-23 | 2018-08-23 | A kind of coolant hydrogenation system for small-sized heap |
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| Publication Number | Publication Date |
|---|---|
| CN209000555U true CN209000555U (en) | 2019-06-18 |
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|---|---|---|---|
| CN201821366486.0U Expired - Fee Related CN209000555U (en) | 2018-08-23 | 2018-08-23 | A kind of coolant hydrogenation system for small-sized heap |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109166638A (en) * | 2018-08-23 | 2019-01-08 | 中国船舶重工集团公司第七〇九研究所 | A kind of coolant hydrogenation system and method for small-sized heap |
-
2018
- 2018-08-23 CN CN201821366486.0U patent/CN209000555U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109166638A (en) * | 2018-08-23 | 2019-01-08 | 中国船舶重工集团公司第七〇九研究所 | A kind of coolant hydrogenation system and method for small-sized heap |
| CN109166638B (en) * | 2018-08-23 | 2024-02-13 | 中国船舶重工集团公司第七一九研究所 | Coolant hydrogenation system and method for small stack |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190618 Termination date: 20210823 |