CN206282620U - A kind of sodium ion control device of nuclear power plant containment shell spray system - Google Patents
A kind of sodium ion control device of nuclear power plant containment shell spray system Download PDFInfo
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- CN206282620U CN206282620U CN201621161997.XU CN201621161997U CN206282620U CN 206282620 U CN206282620 U CN 206282620U CN 201621161997 U CN201621161997 U CN 201621161997U CN 206282620 U CN206282620 U CN 206282620U
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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 discloses a kind of sodium ion control device of nuclear power plant containment shell spray system, including alkali infusion circuit and two tubulation lines, alkali infusion circuit includes lye tank, lye tank is connected by main pipeline with two tubulation lines, lye tank is provided with circulating line, main pipeline is provided with the first valve, and main pipeline is divided into the first pipeline section and the second pipeline section by the first valve.Due to being provided with discharge duct on the first segment, enable the first pipeline section and atmosphere, so as to break the first pipeline section interior sealing, so as to alkali lye of the fluid-tight in the first pipeline section can be discharged from bypass line, and discharge duct UNICOM air can destroy the siphonage of the first pipeline section, prevent siphon to metal run out.Therefore the sodium ion control device of this nuclear power plant containment shell spray system can effectively drain net alkali lye, fundamentally prevent alkali lye to enter into second pipe, so that the safer stabilization of nuclear power plant containment shell spray system, so as to solve nuclear power station unsolved sodium pollution problem always for many years.
Description
Technical field
The utility model is related to large nuclear-power special project safety means, and in particular to a kind of nuclear power plant containment shell spray system
Sodium ion control device.
Background technology
Nuclear power station (nuclear power plant) also known as nuclear power plant, be using nuclear fission (Nuclear Fission) or
The power plant of the discharged energy production electric energy of nuclear fusion (Nuclear Fusion) reaction.Nuclear energy during business is operated at present
Power plant is all to be reacted using nuclear fission and generated electricity.Nuclear power station is generally divided into two parts：Using nuclear fission production steam
Nuclear island (including reactor assembly and primary Ioops system) and the conventional island (including steam turbine generator system) using steam-electric power, make
Fuel is usually radioactivity heavy metal：Uranium, plutonium.
Nuclear power station can substantially be divided into two parts：A part is the nuclear island that steam is produced using nuclear energy, including reactor assembly
With primary Ioops system；Another part is the conventional island using steam-electric power, including steam turbine generator system.Nuclear fuel is in reactor
The disintegration energy of interior generation, mainly occurs in the form of heat energy.Its carrier band and conversion by cooling agent, it is final to use steam or gas
Turbine generation unit is driven to generate electricity.The all key equipments with hot of nuclear power plant are all arranged on containment vessel factory building
It is interior, it is excessive to limit radioactive substance under loss of-coolant accident (LOCA) or other major accidents.In order to ensure reactor core nuclear fuel any
In the case of when cooling and from burning fusing, nuclear power plant is provided with multinomial security system.
In order to deal with the generation of the extreme loss of-coolant accident (LOCA) (LOCA) of one loop of nuclear power station primary pipe rupture, modern age nuclear power station is all
It is provided with critical cooling system.It is made up of safety injection system and containment spray system (EAS).Once it is connected to extreme dehydration
After the signal of accident, safety injection system is sprayed water and chemistry to high pressure boron water, spray system is injected in reactor to containment
Medicament.Just damage sequence can be alleviated, limitation accident spreads.Injecting systems：When the pipeline or equipment of one loop of nuclear power station system are sent out
After raw breakage event, safety injection system is used for promptly injecting boron cooling water high to reactor core, prevent reactor core because dehydration and caused by burn
Ruin.
Containment is to stop that fission product and primary Ioops radioactive substance from fuel enter the last of environment and shield together
Barrier.Under it there are containment internal steam pipe road rupture accident conditions, high temperature, the steam of high pressure blow out, and make containment internal pressure
Power and temperature are raised.And the function of safety shower system is exactly by spraying condensed steam, dropping pressure and temperature in containment
It is low to acceptable level, it is ensured that the integrality of containment.
Be provided with a considerable amount of spray heads on the top of containment, when in containment due to occur main pipeline breakage event and
When steam pressure is raised, the pump of containment spray system will be supplied with regard to automatic in the boron water and NaOH tanks in material-changing water tank
Except the NaOH solution of iodine is sinked together, mix in certain proportion, then sprayed into containment by spray head.When material-changing water tank
After water is exhausted, spray pump can change the ground effluent drawn in containment.Now, after ground effluent is first cooled down by component cooling water again again
It is sprayed in containment.
As shown in figure 1, containment spray system includes two tubulation lines, each column pipeline includes a feeding spraying pump
EAS001PO/002PO, chemical addition agent injector EAS001EJ/002EJ, a heat exchanger EAS001RF/002RF
With two spray throwers for being located at containment top different level and common chemical agent loop.The shared equipment of two tubulation lines
Pipeline stirs and make muddy pump EAS003PO including a chemical addition agent case EAS001BA and one, in addition with the company that two tubulation lines are shared
Connect the spray pump experiment pipeline of material-changing water tank PTR001BA.
Also there is alkali infusion circuit on containment spray system, as shown in Fig. 2 alkali infusion circuit mainly includes an alkali
Liquid case EAS001BA, a circulating pump EAS003PO and three the second valve 141VR/125VR/158VR, lye tank EAS001BA
Upper end be connected with spray system by main pipeline 012, be provided with the first valve 125VR, the first valve in the end of main pipeline 012
012 point by main pipeline of 125VR is front and rear A pipeline sections and B pipeline sections, in the end of main pipeline 012 and the leading portion of the first valve 125VR
The bypass line 024 for discharging alkali lye is provided with, the 3rd valve 158VR is arranged in bypass line 024.Lye tank EAS001BA
On be additionally provided with circulating line 036, one end and the lye tank EAS001BA lower ends UNICOM of circulating line 036, the other end and upper end
The UNICOM of main pipeline 012, the second valve 141VR is arranged on circulating line 036, and at lye tank EAS001BA lower ending openings,
Circulating pump EAS003PO is arranged on circulating line 036, and in the second valve 141VR downstreams, circulating pump EAS003PO is used to drive
The alkali lye circulation of dynamic lye tank EAS001BA.
Finding that there is alkali infusion circuit serious leakage to cause sodium to pollute using process, leakage accident is as follows：1994
Due to there is residue in leakage and alkali lye injection line in the first valve 125VR, material-changing water tank PTR001BA sodium is caused to pollute；
In March, 1998 causes material-changing water tank PTR001BA sodium to pollute due to being leaked in 125VR；Due to being leaked in 125VR, and circulate within 2002
Pump EAS003PO causes material-changing water tank PTR001BA sodium to pollute when doing periodic laboratory；In April, 2013, " four ponds connect for D216 overhauls
It is logical " after reactor pit sample analysis, it is found that the more conventional overhaul of material-changing water tank PTR001BA sodium contents is present substantially abnormal
Go up so that primary Ioops multiple system is polluted by sodium.Because sodium pollution generates a series of IOER events over more than 20 years.
Find that the sodium pollution cause of alkali infusion circuit is by maintenance investigation:Material-changing water tank PTR001BA needs for every eight hours
Startup is stired and make muddy once, prevents the crystallization of alkali lye, and material-changing water tank PTR001BA carries out interior circulation and stirs and make muddy by circulating pump EAS003PO,
Due to circulating line 036 and the UNICOM of main pipeline 012, the process stired and make muddy in circulation such as causes part alkali lye to be splashed to main pipeline
In 012 A pipeline sections, and when circulating pump EAS003PO is circulated experiment, because the quick flowing of fluid will be produced in B pipeline sections
Certain vacuum, causes the air pressure of the second valve 141VR both sides not reciprocity, and the pressure in A pipeline sections is more than pressure in B pipeline sections,
Even if the second valve 141VR is closed under the driving of pressure, during alkali lye can also penetrate into B pipeline sections into A pipeline sections, so as to cause
Sodium pollutes.And in the design of existing pipeline section, it is impossible to which the alkali lye in A pipeline sections is drained only, on opening lateral 024 the
Three valve 158VR, because alkali lye forms fluid-tight, and material-changing water tank PTR001BA one end is blind end, therefore alkali lye is adsorbed
Firmly, it is impossible to freely discharge.
Existing alkali infusion circuit also has phenomenon of metalling run out, and material-changing water tank PTR001BA is carried out by lateral 024
During discharge opeing, easily occur being filled with liquid in lateral 024 and main pipeline 012, siphonage is formed, from material-changing water tank
Band runs more liquid in PTR001BA.
Therefore in the prior art there is sodium pollution and phenomenon of metalling run out in alkali infusion circuit, will cause serious pollution and waste.
The content of the invention
The application provides one kind and is prevented from polluting safing nuclear power plant containment shell spray system.
According in a first aspect, the sodium ion that a kind of nuclear power plant containment shell spray system is provided in a kind of embodiment controls dress
Put, including alkali infusion circuit and two tubulation lines, alkali infusion circuit includes lye tank, and lye tank is by main pipeline and two tubulation lines company
Connect, lye tank is provided with the supervisor of circulating line, circulating line one end and lye tank lower end UNICOM, the other end and lye tank upper end
Road UNICOM, main pipeline is provided with the first valve, and main pipeline is divided into the first pipeline section and the second pipeline section by the first valve, and the first pipeline section is
Pipeline section between lye tank and the first valve, the position on the first pipeline section near the first valve is provided with bypass line, the first pipeline section
It is many places bending pipeline, one section of entirety of highest of the first pipeline section is higher than lye tank, and discharge duct is provided with the first segment, is vented
The tie point of pipeline and main pipeline is located at circulating line and lateral respectively and the tie point of main pipeline between, on circulating line
It is provided with the second valve and circulating pump.
Further, discharge duct one end and main pipeline UNICOM, the other end and atmosphere.
Further, discharge duct is provided with air bleeding valve.
In other embodiments, the tie point of discharge duct and the first pipeline section is located in one section of the highest of the first pipeline section.
Further, one section of the highest of the first pipeline section is obliquely installed, and the other end is less than near one end of lye tank.
Further, one section of the highest of the first pipeline section inclines 5 °~10 ° settings.
Further, one section of the highest of the first pipeline section inclines 5 ° of settings.
In other embodiments, one section of the highest of discharge duct is provided with least one convex arc pipeline section.
Further, arc pipeline section has two, and is spaced apart setting.
According to second aspect, a kind of alkali infusion circuit, including lye tank are provided in a kind of embodiment, lye tank is by supervisor
Road is connected with two tubulation lines, and lye tank is provided with circulating line, circulating line one end and lye tank lower end UNICOM, the other end and alkali
The main pipeline UNICOM of liquid case upper end, main pipeline is provided with the first valve, and main pipeline is divided into the first pipeline section and second by the first valve
Pipeline section, the first pipeline section is the pipeline section between lye tank and the first valve, and the position on the first pipeline section near the first valve is provided with branch
Road pipeline, the first pipeline section is many places bending pipeline, and one section of entirety of highest of the first pipeline section is higher than lye tank, is set on the first segment
Have a discharge duct, discharge duct and the tie point of main pipeline be located at circulating line and lateral respectively with the tie point of main pipeline
Between, circulating line is provided with the second valve and circulating pump.
Further, discharge duct one end and main pipeline UNICOM, the other end and atmosphere.
Further, discharge duct is provided with air bleeding valve.
In other embodiments, the tie point of discharge duct and the first pipeline section is located in one section of the highest of the first pipeline section.
Further, one section of the highest of the first pipeline section is obliquely installed, and the other end is less than near one end of lye tank.
Further, one section of the highest of the first pipeline section inclines 5 °~10 ° settings.
Further, one section of the highest of the first pipeline section inclines 5 ° of settings.
In other embodiments, one section of the highest of discharge duct is provided with least one convex arc pipeline section.
Further, arc pipeline section has two, and is spaced apart setting.
According to the sodium ion control device of the nuclear power plant containment shell spray system of above-described embodiment, due on the first segment
Be provided with discharge duct so that the first pipeline section can with atmosphere, so as to break the first pipeline section interior sealing, so that fluid-tight is first
Alkali lye in pipeline section can be discharged from bypass line, and discharge duct UNICOM air can destroy the siphon work of the first pipeline section
With preventing siphon to metal run out.Therefore the sodium ion control device of this nuclear power plant containment shell spray system can effectively drain net alkali
Liquid, has fundamentally prevented alkali lye and has entered into second pipe, so as to avoid sodium pollution so that nuclear power plant containment shell spray system
Safer stabilization.
Brief description of the drawings
Fig. 1 is the structured flowchart of nuclear power plant containment shell spray system in the prior art；
Fig. 2 is a kind of structured flowchart of the sodium ion control device of nuclear power plant containment shell spray system in embodiment；
Fig. 3 is a kind of structural representation of alkali infusion circuit in embodiment；
Fig. 4 is the structural representation of alkali infusion circuit in another embodiment；
Fig. 5 is the partial structural diagram of the first pipeline section in another embodiment.
Specific embodiment
Embodiments of the invention are described below in detail, the example of embodiment is shown in the drawings, wherein identical from start to finish
Or similar label represents same or similar element or the element with same or like function.Retouched below with reference to accompanying drawing
The embodiment stated is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise " are, based on orientation shown in the drawings or position relationship, to be for only for ease of
The description present invention is described with simplified, must have specific orientation, Yi Te rather than the device or element for indicating or imply meaning
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；It can be machine
Tool is connected, or electrically connected；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two units
Connection inside part.For the ordinary skill in the art, can as the case may be understand above-mentioned term in this hair
Concrete meaning in bright.
Embodiment one：
A kind of sodium ion control device of nuclear power plant containment shell spray system is provided in embodiments of the present invention.
As shown in Fig. 2 the nuclear power plant containment shell spray system in this example includes an alkali infusion circuit and two tubulation lines, alkali
Infusion circuit respectively with two tubulation line UNICOMs.
Each column pipeline includes a feeding spraying pump EAS001PO/002PO, a chemical addition agent spray in two tubulation line UNICOMs
Emitter EAS001EJ/002EJ, a heat exchanger EAS001RF/002RF and two are located at the spray of containment top different level
Drench collector and common chemical agent loop.The shared equipment installation of two tubulation lines includes a chemical addition agent case EAS001BA
Pump EAS003PO is stired and make muddy with one, the spray pump developmental tube of the connection material-changing water tank PTR001BA shared in addition with two tubulation lines
Line.
As shown in figure 3, alkali infusion circuit mainly include lye tank EAS001BA (i.e. chemical addition agent case), main pipeline 012,
Lateral 024, circulating line 036, the first valve 125VR, the second valve 141VR, the 3rd valve 158VR and circulating pump
003PO。
One end of main pipeline 012 is connected to the upper end of lye tank EAS001BA, and the other end is connected with two tubulation lines respectively, alkali
Liquid case EAS001BA is connected by main pipeline 012 with two tubulation lines, and alkali lye is added in two tubulation roads, is sprayed.First
Valve 125VR is arranged on the downstream rear end of main pipeline 012, and the opening and closing for controlling main pipeline 012, the first valve 125VR will lead
012 point of pipeline is the first pipeline section 0121 and second pipe 0122, and the first pipeline section 0121 is located at upstream, and the first pipeline section 0121 is in alkali
Between liquid case EAS001BA and the first valve 125VR, the second pipeline section 0122 is located at downstream, and the second pipeline section 0122 is in the first valve
Between 125VR and two tubulation lines.
First pipeline section 0121 is many places bending pipeline, the first bending three times altogether of pipeline section 0121 in this example, perpendicular with two sections
Straight length and two sections of horizontal pipeline sections, and one end of the upstream in both ends horizontal pipeline section is higher than lye tank EAS001BA, Ling Yishui
Flat tube section is located at lye tank EAS001BA medium positions highly.
The horizontal pipeline section UNICOM in the downstream of the pipeline section 0121 of lateral 024 and first, and tie point is near the first valve
125VR.3rd valve 158VR is arranged on lateral 024, the opening and closing for controlling lateral 024.Lateral 024
Lower section be collecting pit, for collect from lye tank EAS001BA discharge liquid.
Lye tank EAS001BA is used to store alkali electroless reagent N aOH solution, the upper and lower ends point of lye tank EAS001BA
Be not provided with the pipeline opening for being connected with pipeline, lye tank EAS001BA upper ends are connected with main pipeline 012, main pipeline 012 it is perpendicular
Straight pipeline extend into the inside of lye tank EAS001BA, and extend into lye tank EAS001BA inner chamber bodies middle part slightly under position
Put.Lye tank EAS001BA lower ends are connected with circulating line 036, and the other end of circulating line 036 is extended upwardly to and main pipeline
012 the first pipeline section 0121 is connected, and tie point is located on the vertical pipeline section of lye tank EAS001BA.
Second valve 141VR is installed on circulating line 036 and circulating pump 003PO, the second valve 141VR are located at lye tank
The lower position of EAS001BA, controls the opening and closing of circulating line 036, and circulating pump 003PO is used to drive in lye tank EAS001BA
Alkali lye from lower end flow out, returned in lye tank EAS001BA from main pipeline 012 again by circulating line 036, formation is looped back
Road, prevents the solidification and crystallization of alkali lye in lye tank EAS001BA.
This example is polluted to solve the problems, such as sodium, and discharge duct 048 is provided with the first pipeline section 0121.This example is preferred
, discharge duct 048 is arranged on the horizontal pipeline section of position highest of the first pipeline section 0121.One end of discharge duct 048 and the
The horizontal pipeline section UNICOM of position highest of one pipeline section 0121, the other end and atmosphere, and be provided with discharge duct 048
The opening and closing of the control discharge duct 048 of the 4th valve 908VR, the 4th valve 908VR, realizes the connection of the first pipeline section 0121 and air
It is logical.
The sodium ion control device of the nuclear power plant containment shell spray system that this example is provided, due to being set on the first pipeline section 0121
Have discharge duct 048 so that the first pipeline section 0121 can with atmosphere, so as to break the interior sealing of the first pipeline section 0121 so that
Alkali lye of the fluid-tight in the first pipeline section 0121 can be discharged from bypass line 024, and the UNICOM's air of discharge duct 048 can break
The siphonage of bad first pipeline section 0121, prevents siphon to metal run out.Therefore the sodium ion of this nuclear power plant containment shell spray system is controlled
Device can effectively drain net alkali lye, fundamentally prevented alkali lye and entered into second pipe, so as to avoid sodium pollution, make
Obtain the safer stabilization of nuclear power plant containment shell spray system.
The antipollution nuclear power plant containment shell spray of this example by after test of many times, sodium content knot in chemical analysis flushing water
Fruit is as follows：(unit ppb)
The nuclear power plant containment shell spray system of this example sodium content compared with prior art is can be seen that from test structure above
80%~90% is reduced, has met the Chemical Control standard of nuclear power station, the minimum since sodium content is reduced to history is used
The sodium ion control device of the nuclear power plant containment shell spray system of this example solves unsolved alkali lye pollution problem over more than 20 years,
For the safe and stable operation of nuclear power station provides strong guarantee.
Embodiment two：
This example provides a kind of alkali infusion circuit, the alkali infusion circuit of this example is used in section's electronic security(ELSEC) shell spray system,
In other embodiments, the alkali infusion circuit of this example can also be used for being arranged in other systems, play a part of alkali lye injection, and
Can effectively prevent alkali lye from polluting.
As shown in figure 3, alkali infusion circuit mainly include lye tank EAS001BA (i.e. chemical addition agent case), main pipeline 012,
Lateral 024, circulating line 036, the first valve 125VR, the second valve 141VR, the 3rd valve 158VR and circulating pump
003PO。
One end of main pipeline 012 is connected to the upper end of lye tank EAS001BA, and the other end is connected with two tubulation lines respectively, alkali
Liquid case EAS001BA is connected by main pipeline 012 with two tubulation lines, and alkali lye is added in two tubulation roads, is sprayed.First
Valve 125VR is arranged on the downstream rear end of main pipeline 012, and the opening and closing for controlling main pipeline 012, the first valve 125VR will lead
012 point of pipeline is the first pipeline section 0121 and second pipe 0122, and the first pipeline section 0121 is located at upstream, and the first pipeline section 0121 is in alkali
Between liquid case EAS001BA and the first valve 125VR, the second pipeline section 0122 is located at downstream, and the second pipeline section 0122 is in the first valve
Between 125VR and two tubulation lines.
First pipeline section 0121 is many places bending pipeline, the first bending three times altogether of pipeline section 0121 in this example, perpendicular with two sections
Straight length and two sections of horizontal pipeline sections, and one end of the upstream in both ends horizontal pipeline section is higher than lye tank EAS001BA, Ling Yishui
Flat tube section is located at lye tank EAS001BA medium positions highly.
The horizontal pipeline section UNICOM in the downstream of the pipeline section 0121 of lateral 024 and first, and tie point is near the first valve
125VR.3rd valve 158VR is arranged on lateral 024, the opening and closing for controlling lateral 024.Lateral 024
Lower section be collecting pit, for collect from lye tank EAS001BA discharge liquid.
Lye tank EAS001BA is used to store alkali electroless reagent N aOH solution, the upper and lower ends point of lye tank EAS001BA
Be not provided with the pipeline opening for being connected with pipeline, lye tank EAS001BA upper ends are connected with main pipeline 012, main pipeline 012 it is perpendicular
Straight pipeline extend into the inside of lye tank EAS001BA, and extend into lye tank EAS001BA inner chamber bodies middle part slightly under position
Put.Lye tank EAS001BA lower ends are connected with circulating line 036, and the other end of circulating line 036 is extended upwardly to and main pipeline
012 the first pipeline section 0121 is connected, and tie point is located on the vertical pipeline section of lye tank EAS001BA.
Second valve 141VR is installed on circulating line 036 and circulating pump 003PO, the second valve 141VR are located at lye tank
The lower position of EAS001BA, controls the opening and closing of circulating line 036, and circulating pump 003PO is used to drive in lye tank EAS001BA
Alkali lye from lower end flow out, returned in lye tank EAS001BA from main pipeline 012 again by circulating line 036, formation is looped back
Road, prevents the solidification and crystallization of alkali lye in lye tank EAS001BA.
This example is polluted to solve the problems, such as sodium, and discharge duct 048 is provided with the first pipeline section 0121.This example is preferred
, discharge duct 048 is arranged on the horizontal pipeline section of position highest of the first pipeline section 0121.One end of discharge duct 048 and the
The horizontal pipeline section UNICOM of position highest of one pipeline section 0121, the other end and atmosphere, and be provided with discharge duct 048
The opening and closing of the control discharge duct 048 of the 4th valve 908VR, the 4th valve 908VR, realizes the connection of the first pipeline section 0121 and air
It is logical.
The sodium ion control device of the nuclear power plant containment shell spray system that this example is provided, due to being set on the first pipeline section 0121
Have discharge duct 048 so that the first pipeline section 0121 can with atmosphere, so as to break the interior sealing of the first pipeline section 0121 so that
Alkali lye of the fluid-tight in the first pipeline section 0121 can be discharged from bypass line 024, and the UNICOM's air of discharge duct 048 can break
The siphonage of bad first pipeline section 0121, prevents siphon to metal run out.Therefore the sodium ion of this nuclear power plant containment shell spray system is controlled
Device can effectively drain net alkali lye, fundamentally prevented alkali lye and entered into second pipe, so as to avoid sodium pollution, make
Obtain the safer stabilization of nuclear power plant containment shell spray system.
Embodiment three：
This example provides a kind of alkali infusion circuit and nuclear power plant containment shell spray system, in embodiment one and embodiment two
Alkali infusion circuit is further transformed, and further obviates sodium pollution.
As shown in figure 4, the alkali infusion circuit in this example, is arranged to skewed by the pipeline section of the highest point of the first pipeline section 0121
State, the pipeline section of this section is arranged to upstream less than downstream, i.e., be less than the other end near that end of lye tank EAS001BA.Also, this
The inclination angle of pipeline section is set to 5 °~10 °, preferably inclines 5 ° of settings.
The pipeline section of the highest point of the alkali infusion circuit of this example is arranged to inclined state so that be splashed to the first pipeline section 0121
During interior alkali lye can flow back to lye tank EAS001BA automatically in inclined pipeline, its discharge alkali lye effect is obvious, and only
Existing pipeline need to be inclined and installed, improvement cost is low, and greatly improve the discharge effect of alkali lye, further noted to alkali
The anti-leak of entry loop is provided and ensured.
Example IV：
This example provides a kind of alkali infusion circuit and nuclear power plant containment shell spray system, in embodiment one and embodiment two
Alkali infusion circuit is further transformed, and further obviates sodium pollution.
As shown in figure 5, the alkali infusion circuit in this example, is provided with multiple convex by the pipeline section of the highest point of the first pipeline section 0121
Arc pipeline section, this example is preferably two, and two curved pipes are intersegmental to be spaced apart, and two arc pipeline sections form labyrinth type pipeline energy
It is enough effectively to prevent alkali lye from entering into the second pipeline section 0122.
This example increases arc pipeline section on the first pipeline section 0121, and equally playing prevents the leakage of alkali lye, is further noted to alkali
The anti-leak of entry loop is provided and ensured.
Use above specific case is illustrated to the present invention, is only intended to help and understands the present invention, is not used to limit
The system present invention.For those skilled in the art, according to thought of the invention, can also make some simple
Deduce, deform or replace.
Claims (18)
1. a kind of sodium ion control device of nuclear power plant containment shell spray system, including alkali infusion circuit and two tubulation lines, it is described
Alkali infusion circuit includes lye tank, and the lye tank is connected by main pipeline with two tubulation lines, and the lye tank is provided with circulation
The main pipeline UNICOM of pipeline, described circulating line one end and lye tank lower end UNICOM, the other end and lye tank upper end, the supervisor
Road is provided with the first valve, and main pipeline is divided into the first pipeline section and the second pipeline section by first valve, and first pipeline section is alkali
Pipeline section between liquid case and the first valve, the position on first pipeline section near the first valve is provided with bypass line, and described the
One pipeline section is many places bending pipeline, and one section of entirety of highest of first pipeline section is higher than the lye tank, it is characterised in that in institute
State the first pipeline section and be provided with discharge duct, the discharge duct is located at the circulating line and branched pipe with the tie point of main pipeline
Respectively and the tie point of main pipeline between, the circulating line is provided with the second valve and circulating pump in road.
2. the sodium ion control device of nuclear power plant containment shell spray system as claimed in claim 1, it is characterised in that the row
Feed channel one end and main pipeline UNICOM, the other end and atmosphere.
3. the sodium ion control device of nuclear power plant containment shell spray system as claimed in claim 2, it is characterised in that the row
Feed channel is provided with air bleeding valve.
4. the sodium ion control device of the nuclear power plant containment shell spray system as described in claim 1 or 3, it is characterised in that institute
Discharge duct is stated to be located in one section of the highest of first pipeline section with the tie point of first pipeline section.
5. the sodium ion control device of nuclear power plant containment shell spray system as claimed in claim 4, it is characterised in that described
One section of the highest of one pipeline section is obliquely installed, and the other end is less than near one end of the lye tank.
6. the sodium ion control device of nuclear power plant containment shell spray system as claimed in claim 5, it is characterised in that described
One section of the highest of one pipeline section inclines 5 °~10 ° settings.
7. the sodium ion control device of nuclear power plant containment shell spray system as claimed in claim 6, it is characterised in that described
One section of the highest of one pipeline section inclines 5 ° of settings.
8. the sodium ion control device of the nuclear power plant containment shell spray system as described in claim 1 or 3, it is characterised in that institute
One section of highest for stating discharge duct is provided with least one convex arc pipeline section.
9. the sodium ion control device of nuclear power plant containment shell spray system as claimed in claim 8, it is characterised in that the arc
Shape pipeline section has two, and is spaced apart setting.
10. a kind of alkali infusion circuit, including lye tank, the lye tank is connected by main pipeline with two tubulation lines, the alkali lye
Case is provided with the main pipeline of circulating line, described circulating line one end and lye tank lower end UNICOM, the other end and lye tank upper end
UNICOM, the main pipeline is provided with the first valve, and main pipeline is divided into the first pipeline section and the second pipeline section by first valve, described
First pipeline section is the pipeline section between lye tank and the first valve, and the position on first pipeline section near the first valve is provided with branch road
Pipeline, first pipeline section is many places bending pipeline, and one section of entirety of highest of first pipeline section is higher than the lye tank, and it is special
Levy and be, discharge duct is provided with first pipeline section, the discharge duct is located at the circulation with the tie point of main pipeline
Respectively and the tie point of main pipeline between, the circulating line is provided with the second valve and circulating pump for pipeline and lateral.
11. alkali infusion circuits as claimed in claim 10, it is characterised in that described discharge duct one end and main pipeline UNICOM,
The other end and atmosphere.
12. alkali infusion circuits as claimed in claim 11, it is characterised in that the discharge duct is provided with air bleeding valve.
The 13. alkali infusion circuit as described in claim 10 or 12, it is characterised in that the discharge duct and first pipeline section
Tie point be located at first pipeline section one section of highest on.
14. alkali infusion circuits as claimed in claim 13, it is characterised in that one section of inclination of highest of first pipeline section sets
Put, the other end is less than near one end of the lye tank.
15. alkali infusion circuits as claimed in claim 14, it is characterised in that one section of 5 ° of inclination of highest of first pipeline section~
10 ° of settings.
16. alkali infusion circuits as claimed in claim 15, it is characterised in that one section of the highest of first pipeline section inclines 5 ° and sets
Put.
The 17. alkali infusion circuit as described in claim 10 or 12, it is characterised in that set in one section of the highest of the discharge duct
There is at least one convex arc pipeline section.
18. alkali infusion circuits as claimed in claim 17, it is characterised in that the arc pipeline section has two, and is spaced apart
Set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621161997.XU CN206282620U (en) | 2016-10-25 | 2016-10-25 | A kind of sodium ion control device of nuclear power plant containment shell spray system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621161997.XU CN206282620U (en) | 2016-10-25 | 2016-10-25 | A kind of sodium ion control device of nuclear power plant containment shell spray system |
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| Publication Number | Publication Date |
|---|---|
| CN206282620U true CN206282620U (en) | 2017-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621161997.XU Active CN206282620U (en) | 2016-10-25 | 2016-10-25 | A kind of sodium ion control device of nuclear power plant containment shell spray system |
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| Country | Link |
|---|---|
| CN (1) | CN206282620U (en) |
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2016
- 2016-10-25 CN CN201621161997.XU patent/CN206282620U/en active Active
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