CN205786180U - A kind of nuclear power station steam generator rinses sediment reaction unit - Google Patents
A kind of nuclear power station steam generator rinses sediment reaction unit Download PDFInfo
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- CN205786180U CN205786180U CN201620752120.1U CN201620752120U CN205786180U CN 205786180 U CN205786180 U CN 205786180U CN 201620752120 U CN201620752120 U CN 201620752120U CN 205786180 U CN205786180 U CN 205786180U
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Abstract
Nuclear power station steam generator of the present utility model rinses sediment reaction unit and includes that reaction component, sour gas absorb and drain assembly, liquid collection gauge assembly three parts.By design, the connection of each several part exquisiteness, being down to minimum on the premise of ensureing experiment accuracy and precision by each component count of experimental provision, the hydrogen volume utilizing drainage detection to generate achieves and measures the most quick of Fe content in nuclear power station steam generator sediment.
Description
Technical field
This utility model relates to nuclear power station attending device, in particular, relates to a kind of nuclear power station steam generator and rinses
Sediment reaction unit, is mainly used in during nuclear power station big light maintenance steam generator and rinses Fe content analysis in sediment, for evaluating steam
Generator rinses and the most excessively provides foundation.
Background technology
It is the requisite measure maintaining vaporizer during the big light maintenance of nuclear power that steam generator rinses, but mistake
Degree flushing steam generator can be caused damage, sediment reaction result be judge steam generator the most excessively rinse important
Foundation.Sediment reaction gas collecting apparatus for the measurement of sediment reaction result and evaluation, its cardinal principle be by measure hydrochloric acid with
The hydrogen volume that sediment reaction produces, measures Fe content in sediment.The sediment reaction unit that current each nuclear power station commonly uses is such as
Shown in Fig. 1, including reaction component and gas collecting portion, reaction component includes temperature chamber 21, test tube rack 22, reaction tube 23
(100mL), the first plug 24, gas collecting portion includes tank 26, discharge 27 (100mL), test tube rack 28, reaction component and
Gas collecting portion is connected by soft air-guide pipe 25.Temperature chamber 21 will inject 0.1%NaOH solution (mass fraction) during use
For equipment anticorrosion and keep solution temperature in temperature chamber to be always 60 DEG C in an experiment；0.5%NaOH is added in tank 26
Solution (mass fraction), after the 0.5%NaOH solution being full of by discharge in tank 26, back-off and uses test tube rack in tank 26
28 fix, and the steam generator of certain mass rinses sediment (blank group does not put into sediment) and joins in reaction tube 23, then add
Covering the plug of reaction tube 23 after entering the concentrated hydrochloric acid of certain volume immediately, reaction is read gas volume in discharge 27 and is after terminating
Fe content in sediment can be calculated, provide sediment composition, for rinsing the most excessive evaluation.
Existing sediment reaction unit has the disadvantage that
1. experimental result poor accuracy (shows as the blank result that many experiments obtains to differ.Waved by hydrochloric acid in experiment
Send out in strong and discharge that the 0.5%NaOH solution absorption by Hydrochloric Acid to volatilizing is limited in one's ability to be caused).
2. experiment result accuracy is low (has the gas volume ratio collected in very high-probability set trachea at the end of showing as experiment
Blank group is few, and gas recovery ratio is unstable.In strong by hydrochloric acid volatilization in experiment in discharge, 0.5%NaOH solution is to volatilizing
Absorption by Hydrochloric Acid limited in one's ability each experiment time absorbance affected by many factors, absorbance is non-constant to be caused).
3. corroding soft air-guide pipe due to the volatilization of hydrochloric acid in experiment causes soft air-guide pipe to rupture, and collection and confinement of gases mortality is high.
And more renew soft air-guide pipe after needing experiment every time, big to manpower amount of materials consumed.
4. the experiment later stage is because of the reduction of hydrochloric acid rate of volatilization, and in tank, 0.5%NaOH solution can enter reaction tube by suck-back, neutralizes anti-
The hydrochloric acid of Ying Guanzhong, stops reaction to carry out completely, causes reaction result insincere.
5. due to hydrochloric acid volatilization is serious and in discharge the 0.5%NaOH solution absorption by Hydrochloric Acid to volatilizing limited in one's ability,
It is excessive relative to sediment generated reactive gas volume that blank group produces gas volume, and reading is produced bigger error.
6. discharge volume is less than normal, adds that blank generation gas is too much, and the gas gross being easy in experiment produce exceedes
Discharge maximum volume (100mL), causes the failure of an experiment.
7., during discharge is partially submerged in 0.5%NaOH solution, read gas volume difficulty.
8. due to discharge outer wall, to speckle with 0.5%NaOH solution the most wet and slippery, and the experiment incipient stage is difficult to fill discharge
After full 0.5%NaOH solution, back-off in tank and is fixed on test tube rack.
9. discharge needs the most customized, is difficult to supplement buying after damage.
10. needing to fill 0.5%NaOH liquid (about 15L) in tank during experiment, drug consumption is big.
Utility model content
The technical problems to be solved in the utility model is: provide a kind of nuclear power station steam generator to rinse sediment reaction dress
Put, solve prior art the poor accuracy of sediment reaction unit, accuracy is low, be susceptible to the problems such as suck-back phenomenon.
This utility model is in order to solve the problems referred to above, it is provided that technical scheme be: a kind of nuclear power station steam generator is provided
Rinse sediment reaction unit, including:
Reaction component, including the temperature chamber accommodating constant temperature liquid, the reaction tube that is immersed in described constant temperature liquid；
Sour gas absorbs and drain assembly, including the first wide mouthed bottle, is arranged on the second of described first wide mouthed bottle bottleneck
Plug, the first glass tubing running through described second plug and the second glass tubing, described first glass tubing inserts described first wide-mouth
One end of bottle is positioned on the liquid level of described first wide mouthed bottle, and described second glass tubing inserts one end of described first wide mouthed bottle
It is positioned under the liquid level of described first wide mouthed bottle；
Liquid collects gauge assembly, the 3rd plug including the second wide mouthed bottle, being arranged on described second wide mouthed bottle bottleneck, passes through
Wear the 3rd glass tubing and the 4th glass tubing of described 3rd plug, described 3rd glass tubing and described 4th glass tubing and insert institute
The one end stating the second wide mouthed bottle is all located on the liquid level in described second wide mouthed bottle；
Wherein, described reaction tube is connected by soft air-guide pipe with described first glass tubing, and described second glass tubing is with described
3rd glass tubing is connected by catheter.
The nuclear power station steam generator provided at this utility model rinses in sediment reaction unit, the mouth of pipe of described reaction tube
It is provided with the first plug；The mouth of pipe of described reaction tube is positioned on the liquid level of described temperature chamber, is positioned at the bottom of the pipe of described reaction tube
Under the liquid level of described temperature chamber.
The nuclear power station steam generator provided at this utility model rinses in sediment reaction unit, and described reaction component also wraps
Include the test tube rack for fixing described reaction tube.
The nuclear power station steam generator provided at this utility model rinses in sediment reaction unit, described soft air-guide pipe and institute
State catheter internal diameter less than 4.5mm.
The nuclear power station steam generator provided at this utility model rinses in sediment reaction unit, described first glass tubing,
Described second glass tubing, described 3rd glass tubing and described 4th glass tubing internal diameter are respectively less than 4.5mm.
The nuclear power station steam generator provided at this utility model rinses in sediment reaction unit, described second wide mouthed bottle
With volume scale on bottle wall.
The nuclear power station steam generator provided at this utility model rinses in sediment reaction unit, described first wide mouthed bottle and
The bottleneck of described second wide mouthed bottle is frosted mouth.
Implement this utility model, have the advantages that nuclear power station steam generator of the present utility model rinses sediment
Reaction unit includes that reaction component, sour gas absorb and drain assembly, liquid collection gauge assembly three parts.By each portion
Divide the design of exquisiteness, connection, each component count of experimental provision is down on the premise of ensureing experiment accuracy and precision
Minimum, the hydrogen volume that utilizes drainage detection to generate achieves Fe content accurately fast in nuclear power station steam generator sediment
Prompt mensuration.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the composition schematic diagram that in prior art, nuclear power station steam generator rinses sediment reaction unit；
Fig. 2 is the composition signal that nuclear power station steam generator of the present utility model rinses sediment reaction unit preferred embodiment
Figure.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is specifically described.
Unit is in running, and secondary circuit water is when entering steam generator and carrying out heat exchange, and the impurity in water can sink
Amass at steam generator (Steam Generator, hereinafter referred SG) secondary side tube sheet, and constantly expand, cause heat exchange
Pipe pipe end may produce tube wall depression and the phenomenon of circumference crackle.The purpose that steam generator rinses, by tube sheet planar
These deposits are removed, it is to avoid tube wall produces depression and crackle.
In steamer generator flushing process, by the chemical supervision to flushing water, control rinsing quality；By to residue
Chemical analysis, evaluate technological level that vaporizer rinses, in unit normal course of operation secondary circuit pipeline corrosion condition and
The control quality of secondary circuit water quality.
Fig. 2 shows that nuclear power station steam generator of the present utility model rinses the group of sediment reaction unit preferred embodiment
Become, for the most quick of Fe content in nuclear power station steam generator sediment is measured, as in figure 2 it is shown, this sediment reaction unit
Including reaction component, sour gas absorbs and drain assembly, liquid collection gauge assembly.It is described below respectively:
Reaction component, including the temperature chamber 1 accommodating constant temperature liquid, the reaction tube 3 that is immersed in constant temperature liquid；Wherein reaction tube
3 reaction tube volumes are 50-100mL, and constant temperature liquid maintains 60 DEG C in experimentation；
Sour gas absorbs and drain assembly, including the first wide mouthed bottle 7, the second glue of being arranged on the first wide mouthed bottle 7 bottleneck
Plug 10, running through the first glass tubing 8 and the second glass tubing 9 of the second plug 10, the first glass tubing 8 inserts the one of the first wide mouthed bottle 7
End is positioned on the liquid level of the first wide mouthed bottle 7, and the second glass tubing 9 inserts one end of the first wide mouthed bottle 7 and is positioned at the first wide mouthed bottle 7
Under interior liquid level；
Liquid collection gauge assembly, the 3rd plug 12 including the second wide mouthed bottle 11, being arranged on the second wide mouthed bottle 11 bottleneck,
Run through the 3rd glass tubing 13 and the 4th glass tubing 14 of the 3rd plug 12, the 3rd glass tubing 13 and the 4th glass tubing 14 and insert
One end of two wide mouthed bottles 11 is all located on the liquid level in the second wide mouthed bottle 11；
Wherein, reaction tube 3 is connected by soft air-guide pipe 5 with the first glass tubing 8, the second glass tubing 9 and the 3rd glass tubing 13
Being connected by catheter 6, the second plug the 10, the 3rd plug 12 does not match with first wide mouthed bottle the 7, second wide mouthed bottle 11 bore
Set.
The sediment reaction unit of the present embodiment has the advantage that
1. (in experiment, hydrochloric acid volatile quantity is extremely low, adds that the hydrochloric acid of volatilization is in the first wide mouthed bottle 7 for experimental result precision height
The absorption of 0.5%NaOH solution, many experiments result proves that blank is 0mL).
2. experimental result accuracy rate is high (owing to effectively being eliminated in experiment by the absorption of GAS ABSORPTION and water discharging part
The hydrochloric acid volatilization impact on experimental result, adds that device seal is good, uses analytical pure Fe powder to carry out testing its gas recovery ratio
Can reach more than 90%, accuracy rate is high).
3. combined with experimental technique improvement by the improvement of reaction unit, effectively prevent hydrochloric acid volatilization in experiment and cause
Soft air-guide pipe breakage problem, use manpower and material resources sparingly.
4. absorb and drain assembly and effective to the brand-new design of experimental provision by introducing sour gas in this patent
Avoiding the generation of 0.5%NaOH solution suck-back phenomenon in experiment the first wide mouthed bottle in latter stage 7, make reaction more thorough, result is more
Add credible.
5. owing to effectively eliminating in experiment hydrochloric acid volatilization to experiment knot by the absorption of GAS ABSORPTION and water discharging part
The impact of fruit so that recording the gas volume of generation after experiment empty group experiment is 0mL, it is to avoid blank group produces gas body
Long-pending reading is produced bigger error possibility excessive relative to sediment generated reactive gas volume.
6. this patent all component is not required to custom-made, and the most commercially bulk industrial produces, and it is convenient to buy, and can replace
Dai Xingqiang.
7. experiment after sour gas absorb and drain assembly, and liquid collect gauge assembly wide mouthed bottle in 0.5%
NaOH solution can reuse, and adds the own small volume of 0.5%NaOH solution in the first wide mouthed bottle 7 when experiment starts,
Save medicine.
In another preferred embodiment of the present utility model, the mouth of pipe of reaction tube 3 is provided with the first plug 4, the first plug 4
Match with the bore of reaction tube 3；The mouth of pipe of reaction tube 3 is positioned on the liquid level of temperature chamber 1, is positioned at perseverance at the bottom of the pipe of reaction tube 3
Under the liquid level of temperature groove 1.Operating for convenience, reaction component also includes the test tube rack 2 for fixing reaction tube 3.First plug
4, the use of the second plug the 10, the 3rd plug 12 so that sediment reaction unit seal is good, internal medium and outside completely every
From, it is to avoid the experimental error that gas leakage causes.
In another preferred embodiment of the present utility model, soft air-guide pipe 5, catheter 6 are silica gel hose and bore
The guarantee that matches with respective connecting portion is air tight in testing, for ensureing the experiment less soft air-guide pipe of relative error 5, catheter 6
Internal diameter need to be less than 4.5mm.First glass tubing the 8, second glass tubing the 9, the 3rd glass tubing the 13, the 4th glass tubing 14 is glass tubing,
Less for ensureing experiment relative error, first glass tubing the 8, second glass tubing the 9, the 3rd glass tubing the 13, the 4th glass tubing 14 internal diameter
4.5mm need to be less than.
In another preferred embodiment of the present utility model, with volume scale on the bottle wall of the second wide mouthed bottle 11.This reality
Execute in example, only need to read liquid after testing and collect liquid volume in the wide mouthed bottle that gauge assembly the second wide mouthed bottle 11 is with a scale
(equal with the hydrogen volume produced in reaction), intuitive and convenient.
In another preferred embodiment of the present utility model, first wide mouthed bottle the 7, second wide mouthed bottle 11 is 250mL glass
Quality frosted mouth band volume scale wide mouthed bottle, collects metering due to sour gas absorption and drain assembly and liquid in the present embodiment
What assembly used is 250mL glass quality frosted mouth band volume scale wide mouthed bottle, therefore produces the effective of gas in experiment
Measurement range is 0-200mL, and is 0mL owing to blank group produces gas volume, fully meets nuclear power station steam generator and rinses
Sediment reacts the gas volume demand produced, and has stopped to produce gas in experiment possible beyond experimental provision range, has been prevented effectively from
The failure of an experiment situation.
This utility model specifically used mode in nuclear power station steam generator rinses sediment reaction is as follows:
1. connect each device according to Fig. 2, and guarantee that each several part is completely embedded, air tight；
2. in temperature chamber 1, inject 0.1%NaOH solution (mass fraction) prevent equipment corrosion and the middle temperature of temperature chamber will be made
Degree maintains 60 DEG C in experimentation；
3. in the first wide mouthed bottle 7, inject 220mL 0.5%NaOH solution (mass fraction) volatilize in absorption experiment
The HCl gas that goes out the liquid medium as drainage；Experiment ensures do not have any liquid in the second wide mouthed bottle 11 before starting；
4. check and to ensure that the first glass tubing 8 inserts the first wide mouthed bottle 7 shallower, and in experiment, its lower end is always positioned at first
In wide mouthed bottle 7 more than NaOH solution liquid level, prevent suck-back phenomenon；
5. check and ensure that the second glass tubing 9 inserts the first wide mouthed bottle 7 relatively deeply, and in experiment, its lower end is always positioned at first
In wide mouthed bottle 7 below NaOH solution liquid level.
6. check and to ensure that the 3rd glass tubing 13 inserts the second wide mouthed bottle 11 shallower, and in experiment, its lower end is always positioned at the
More than NaOH solution liquid level to prevent siphonage in one wide mouthed bottle 7 and the second wide mouthed bottle 11；
7. check and to ensure that the 4th glass tubing 14 inserts the second wide mouthed bottle 11 shallower, and in experiment, its lower end is always positioned at the
In two wide mouthed bottles 11 more than NaOH solution liquid level, it is ensured that its two ends all the time with air contact, make in the second wide mouthed bottle 11 pressure begin
It is atmospheric pressure eventually.
8. check and ensure that the second plug the 10, the 3rd plug 12 plug stoppers.
9. the first plug 4 is taken off, in reaction tube 3, add nuclear power station steam generator rinse sediment 0.200-0.500g
(blank group is added without sediment), and 6mol/L hydrochloric acid 20mL, use rapidly the first plug 4 to stopper reaction tube 3 mouth of pipe.
10. the reaction 0.5%NaOH liquid carried out in stage the first wide mouthed bottle 7 can be continued through catheter 6 and the
Three glass tubings 13 are pressed in the second wide mouthed bottle 11, after question response terminates, read 0.5%NaOH in the second wide mouthed bottle 11 (with a scale)
Liquid volume, it produces hydrogen volume in reacting exactly.
11. utilize generation hydrogen volume in reaction to add the steam generator sediment quality meter in reaction tube 3 before reacting
Calculate Fe content in sediment, be evaluated providing data support for nuclear power station steam generator flushing process.
Compared with prior art, this utility model nuclear power station steam generator flushing sediment reaction unit is being used to carry out core
When power station steam generator rinses sediment reaction experiment, accuracy and the accuracy of experimental data can be effectively improved, for correctly commenting
Valency nuclear power station steam generator rinses and the most excessively provides reliable basis, it is to avoid do not find in time excessively to rinse the damage brought
Lose.
This utility model substitutes former experimental provision in Yangjiang Nuclear Power Y201 overhaul and has carried out steam generator sediment
Reaction experiment, experimental result is used for evaluating Y201 overhaul steam generator whether overdevelopment.
In most preferred embodiment of the present utility model, reaction component includes temperature chamber 1, test tube rack 2, reaction tube the 3, first glue
Plug 4；Sour gas absorbs and drain assembly includes first wide mouthed bottle the 7, first glass tubing the 8, second glass tubing the 9, second plug 10；
Liquid is collected gauge assembly and is included the second wide mouthed bottle the 11, the 3rd plug the 12, the 3rd glass tubing the 13, the 4th glass tubing 14.Reaction group
Part absorbs with sour gas and drain assembly is connected by soft air-guide pipe 5, and sour gas absorbs and drain assembly is collected with liquid
Gauge assembly is connected by catheter 6.
Implement most preferred embodiment of the present utility model, have the advantage that
1. sour gas absorbs and drain assembly passes through first glass tubing the 8, second glass tubing 9 at the first wide mouthed bottle 7 wide-mouth
The design of insertion depth in Ping so that sour gas absorbs and drain assembly only uses 7 one wide mouthed bottles of the first wide mouthed bottle the most same
Time serve: absorb sour gas, serve as drainage aqueous medium store container, prevent suck-back triple role.Not only simplify reality
The composition of experiment device, also acts and improves the effect of experimental result degree of accuracy and accuracy (elimination causes experimental result degree of accuracy
The root extremely low with accuracy: the impact that in experimentation, experimental result is produced by the hydrochloric acid of volatilization).
2. served by the design of insertion depth in the second wide mouthed bottle 11 of the 3rd glass tubing 13 and prevent in experimentation
Prevent the effect of siphon, it is ensured that the accuracy of experimental result.
Serve in experimentation in device by the design of insertion depth in the second wide mouthed bottle 11 of the 4th glass tubing 14
Air pressure is equal with atmospheric pressure all the time, it is ensured that the accuracy of experimental result.
3. by using graduated wide mouthed bottle the second wide mouthed bottle 11 of band to serve liquid receipts at liquid collection gauge assembly
Collection and volume read two-in-one, the effect of instant reading.
Interpretation of result
By said apparatus, after obtaining collected hydrogen volume, sediment Gold Samples belongs to the computing formula of iron content such as
Under:
Fe=X × Y
In formula
Fe sediment Gold Samples belongs to iron content；
In X sediment sample, particle diameter is the sediment of 0.5～1mm；
The meansigma methods of metal Ferrum content measured value in Y sediment sample；
Metal Ferrum content in y sediment sample；
VH2Hydrogen volume collected by sediment sample, mL；
The weight of m sediment sample, mg；
273.15 gases Temperature numerical ideally, K；
Temperature numerical under 298.15 gas normal-temperature atmospheric pressure states, K；
22.4 calibrating gas molal volumes, L/mol；
The molal weight of 55.85 ferrum, g/mol.
The computing formula of the sediment weight that filter element is adsorbed is as follows:
M2=(B-A)/1000 × n
M3=(B-A)/1000 × n
In formula
M2The sediment weight of prefilter filter element absorption, Kg；
M3The sediment weight of filter element absorption, Kg；
The dry filter element of prefilter after B flushing or the average weight of the dry filter element of filter, g；
The average weight of new filter element, g used by new filter element used by A prefilter or filter；
N filter element quantity.
The computing formula of the sediment gross weight of every SG is as follows:
M=M1+M2+M3(every SG rinse complete be suitable in the case of more renewing filter element)
M=M1+M2+M3/ 3 (three SG rinse in the case of using same set of filter element and are suitable for)
In formula
M SG sediment gross weight, Kg；
M1Sediment sample gross weight, Kg；
M2Prefilter filter element adsorbed sediment weight, Kg；
M3The sediment gross weight that filter element is adsorbed, Kg；
Above in conjunction with accompanying drawing, embodiment of the present utility model is described, but on this utility model is not limited to
The detailed description of the invention stated, above-mentioned detailed description of the invention is only schematic rather than restrictive, this area common
Technical staff is under enlightenment of the present utility model, without departing from this utility model objective and scope of the claimed protection situation
Under, it may also be made that a lot of form, within these belong to protection of the present utility model.
Claims (7)
1. a nuclear power station steam generator rinses sediment reaction unit, it is characterised in that including:
Reaction component, including the temperature chamber (1) accommodating constant temperature liquid, the reaction tube (3) that is immersed in described constant temperature liquid；
Sour gas absorbs and drain assembly, including the first wide mouthed bottle (7), is arranged on the of described first wide mouthed bottle (7) bottleneck
Two plugs (10), the first glass tubing (8) running through described second plug (10) and the second glass tubing (9), described first glass tubing
(8) one end inserting described first wide mouthed bottle (7) is positioned on the liquid level of described first wide mouthed bottle (7), described second glass
Pipe (9) inserts one end of described first wide mouthed bottle (7) and is positioned under the liquid level of described first wide mouthed bottle (7)；
Liquid collects gauge assembly, including the second wide mouthed bottle (11), the 3rd glue that is arranged on described second wide mouthed bottle (11) bottleneck
Plug (12), the 3rd glass tubing (13) running through described 3rd plug (12) and the 4th glass tubing (14), described 3rd glass tubing
And described 4th glass tubing (14) one end of inserting described second wide mouthed bottle (11) is all located at described second wide mouthed bottle (13)
(11) on the liquid level in；
Wherein, described reaction tube (3) is connected by soft air-guide pipe (5) with described first glass tubing (8), described second glass tubing
(9) connected by catheter (6) with described 3rd glass tubing (13).
Nuclear power station steam generator the most according to claim 1 rinses sediment reaction unit, it is characterised in that described reaction
The mouth of pipe of pipe (3) is provided with the first plug (4)；The mouth of pipe of described reaction tube (3) is positioned on the liquid level of described temperature chamber (1),
It is positioned at the bottom of the pipe of described reaction tube (3) under the liquid level of described temperature chamber (1).
Nuclear power station steam generator the most according to claim 1 rinses sediment reaction unit, it is characterised in that described reaction
Assembly also includes the test tube rack (2) for fixing described reaction tube (3).
Nuclear power station steam generator the most according to claim 1 rinses sediment reaction unit, it is characterised in that described inducing QI
Flexible pipe (5) and described catheter (6) internal diameter are less than 4.5mm.
Nuclear power station steam generator the most according to claim 1 rinses sediment reaction unit, it is characterised in that described first
Glass tubing (8), described second glass tubing (9), described 3rd glass tubing (13) and described 4th glass tubing (14) internal diameter are respectively less than
4.5mm。
Nuclear power station steam generator the most according to claim 1 rinses sediment reaction unit, it is characterised in that described second
With volume scale on the bottle wall of wide mouthed bottle (11).
Nuclear power station steam generator the most according to claim 1 rinses sediment reaction unit, it is characterised in that described first
The bottleneck of wide mouthed bottle (7) and described second wide mouthed bottle (11) is frosted mouth.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053290A (en) * | 2016-07-14 | 2016-10-26 | 阳江核电有限公司 | Nuclear power plant vapor generator washing and sediment reaction device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053290A (en) * | 2016-07-14 | 2016-10-26 | 阳江核电有限公司 | Nuclear power plant vapor generator washing and sediment reaction device |
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