CN205045834U - A chemical charge device for power plant - Google Patents
A chemical charge device for power plant Download PDFInfo
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- CN205045834U CN205045834U CN201520606936.9U CN201520606936U CN205045834U CN 205045834 U CN205045834 U CN 205045834U CN 201520606936 U CN201520606936 U CN 201520606936U CN 205045834 U CN205045834 U CN 205045834U
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- dosing
- liquid recovery
- valve
- pipeline
- batch meter
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Abstract
The utility model discloses a chemical charge device for power plant belongs to power plant auxiliary machine facility field. Among this charge device, lie in the adding the medicine batch meter, add the medicine measuring pump and lie in the earth's surface of earth's surface more than 30m -40m thermodynamic system connect in order through adding the pencil line, measuring pump outlet valve set up add medicine measuring pump exit add the pencil line on, the thermodynamic system imported valve set up thermodynamic system import department add the pencil line on, the one end of atmosphere communicating pipe communicates with the pencil line that adds of thermodynamic system imported valve import department, the other end and atmosphere intercommunication, and atmosphere intercommunication control flap sets up at the atmosphere on communicating pipe, the both ends of liquid medicine recovery tube communicate with the pencil line that adds that adds medicine batch meter and measuring pump outlet valve exit respectively, and liquid medicine recovery control flap is located the liquid medicine recovery tube. The device provided by the utility model avoiding using a large amount of heat tracing pipe lines, saving a large amount of manpower and materials, its structure is simpler, and the scale of being convenient for is popularized and applied.
Description
Technical field
The utility model relates to Controlling Auxiliaries in Power Plants apparatus field, particularly a kind of chemical chemicals dosing plant for power station.
Background technology
In the daily production process in power station, usual employing chemistry chemicals dosing plant adds chemical reagent to therrmodynamic system, such as in boiler-steam dome, add phosphoric acid salt, ammonification or hydrazine in oiler feed, add hydrazine etc. in deoxygenator, to prevent gyp, remove the dissolved oxygen in feedwater, improve the pH value in feedwater, prevent the metallic corrosion of water feeding system, the safety in power station, economical operation tool are of great significance.So provide a kind of chemical chemicals dosing plant for power station very necessary.
The chemical chemicals dosing plant that prior art provides generally includes the dosing batch meter and dosing volume pump that are positioned at earth's surface, be positioned at more than earth's surface at least 30m therrmodynamic system chemical feeding points highly, and connect the dosing pipeline of this three, in order to realize in each chemical feeding points success dosing, the length of this dosing pipeline has 700 meters at least.In cold snap, when chemicals dosing plant normally runs, due to the continuous flow of liquid, this chemicals dosing plant need not be antifreeze.But; when power station startup or maintenance down (being generally 7 days); in order to prevent dosing pipeline from freezing, prior art adopts aluminum silicate fiber rope to tie up steamtraced piping or accompanying-heat cable on dosing pipeline, to carry out antifreeze process to dosing pipeline during this period usually.
Designer finds that prior art at least exists following problem:
Because dosing pipeline is longer, the aluminum silicate fiber rope, steamtraced piping or the accompanying-heat cable that cause prior art to use all expend more, and the chemical chemicals dosing plant manpower and materials cost causing prior art to provide is higher.
Utility model content
The utility model embodiment technical problem to be solved is, provides a kind of chemical chemicals dosing plant with low man power and material's cost.Concrete technical scheme is as follows:
For the chemical chemicals dosing plant in power station, comprise the dosing batch meter being positioned at earth's surface and be communicated with by-pass valve control, liquid recovery control valve door with dosing volume pump, the therrmodynamic system being positioned at the above 30m-40m At The Height in earth's surface, dosing pipeline, atmospheric communicating pipe, liquid recovery tube, outlet valve of metering pump door, therrmodynamic system imported valve, air;
Described dosing batch meter, described dosing volume pump, described therrmodynamic system are connected in turn by described dosing pipeline, described outlet valve of metering pump door arranges on the dosing pipeline in the exit of described dosing volume pump, and described therrmodynamic system imported valve is arranged on the dosing pipeline of described therrmodynamic system ingress;
One end of described atmospheric communicating pipe is connected with the dosing pipeline of described therrmodynamic system imported valve ingress, and the other end is connected with air, and described air connection by-pass valve control is arranged on described atmospheric communicating pipe;
The two ends of described liquid recovery tube are connected with the dosing pipeline being positioned at described outlet valve of metering pump door exit with described dosing batch meter respectively, and described liquid recovery control valve door is positioned in described liquid recovery tube.
Particularly, as preferably, described atmospheric communicating pipe is 20m-30m higher than the distance on earth's surface.
Particularly, as preferably, described liquid recovery tube is made up of the level pipe be connected and vertical pipe, and the end of described level pipe is connected with described dosing pipeline, and described vertical pipe is connected with described dosing batch meter, and the length of described vertical pipe is 2m-4m.
Particularly, as preferably, described air is communicated with by-pass valve control, liquid recovery control valve door is automatic valve.
Particularly, as preferably, described atmospheric communicating pipe and liquid recovery tube are stainless steel tube, and internal diameter is 20-30mm.
Particularly, as preferably, the volume of described dosing batch meter is 1m
3-2m
3.
Particularly, as preferably, the specification of described dosing pipeline is DN25, and length is 700m-900m.
Particularly, as preferably, described chemical chemicals dosing plant also comprises multiple valve, is arranged on described dosing pipeline.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
The chemical chemicals dosing plant for power station that the utility model embodiment provides, by arranging the atmospheric communicating pipe be connected with air on the dosing pipeline of described therrmodynamic system imported valve ingress, liquid recovery tube is set between the dosing pipeline and dosing batch meter in outlet valve of metering pump door exit simultaneously.When power station unit normally runs, the liquid recovery control valve door that the air on control atmospheric communicating pipe is communicated with in by-pass valve control and liquid recovery tube is closing condition, makes chemical chemicals dosing plant carry out normal dosing process; When power station compressor emergency shutdown overhauls; by-pass valve control and liquid recovery control valve door is communicated with by opening air; now atmospheric communicating pipe is communicated with air; between therrmodynamic system and dosing batch meter potential energy difference effect under; liquid in dosing pipeline will be back in dosing batch meter; thus emptying dosing pipeline, avoid it to freeze in cold snap.Visible, the chemical chemicals dosing plant that the utility model embodiment provides avoids and uses a large amount of heat tracing pipes, saves a large amount of manpower and materials, and its structure is more simple, is convenient to large-scale promotion application.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the chemical chemicals dosing plant for power station that the utility model embodiment provides.
Reference numeral represents respectively:
1 dosing batch meter,
2 dosing volume pumps,
3 therrmodynamic systems,
4 dosing pipelines,
5 atmospheric communicating pipes,
6 liquid recovery tube,
7 outlet valve of metering pump doors,
8 therrmodynamic system imported valves,
9 air are communicated with by-pass valve control,
10 liquid recovery control valve doors.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
As shown in Figure 1, the utility model embodiment provides a kind of chemical chemicals dosing plant for power station, comprises the dosing batch meter 1 being positioned at earth's surface and is communicated with by-pass valve control 9, liquid recovery control valve door 10 with dosing volume pump 2, the therrmodynamic system 3 being positioned at the above 30m-40m At The Height in earth's surface, dosing pipeline 4, atmospheric communicating pipe 5, liquid recovery tube 6, outlet valve of metering pump door 7, therrmodynamic system imported valve 8, air.Wherein, dosing batch meter 1, dosing volume pump 2, therrmodynamic system 3 are connected in turn by dosing pipeline 4, outlet valve of metering pump door 7 arranges on the dosing pipeline 4 in the exit of dosing volume pump 2, and therrmodynamic system imported valve 8 is arranged on the dosing pipeline 4 of therrmodynamic system 3 ingress.One end of atmospheric communicating pipe 5 is connected with the dosing pipeline 4 of therrmodynamic system imported valve 8 ingress, and the other end is connected with air, and air connection by-pass valve control 9 is arranged on atmospheric communicating pipe 5.The two ends of liquid recovery tube 6 are connected with the dosing pipeline 4 being positioned at outlet valve of metering pump door 7 exit with dosing batch meter 1 respectively, and liquid recovery control valve door 10 is positioned in liquid recovery tube 6.
The chemical chemicals dosing plant for power station that the utility model embodiment provides, by arranging the atmospheric communicating pipe 5 be connected with air on the dosing pipeline 4 of therrmodynamic system imported valve 8 ingress, liquid recovery tube 6 is set between the dosing pipeline 4 and dosing batch meter 1 in outlet valve of metering pump door 7 exit simultaneously.When power station unit normally runs, the liquid recovery control valve door 10 that the air on control atmospheric communicating pipe 5 is communicated with in by-pass valve control 9 and liquid recovery tube 6 is closing condition, makes chemical chemicals dosing plant carry out normal dosing process; When power station compressor emergency shutdown overhauls; by-pass valve control 9 and liquid recovery control valve door 10 is communicated with by opening air; now atmospheric communicating pipe 5 is communicated with air; between therrmodynamic system 3 and dosing batch meter 1 potential energy difference effect under; liquid in dosing pipeline 4 will be back in dosing batch meter 1; thus emptying dosing pipeline 4, avoid it to freeze in cold snap.Visible, the chemical chemicals dosing plant that the utility model embodiment provides avoids and uses a large amount of heat tracing pipes, saves a large amount of manpower and materials, and its structure is more simple, is convenient to large-scale promotion application.
Be understandable that, the therrmodynamic system 3 described in the utility model embodiment refers to the generating such as boiler-steam dome, deoxygenator heat power equipment.Carrying out in the process of emptying to dosing pipeline 4, dosing batch meter 1 is communicated with air by atmospheric communicating pipe 5 tunnel that it is arranged.
The utility model embodiment is by being connected on the dosing pipeline 4 of therrmodynamic system imported valve 8 ingress by atmospheric communicating pipe 5, and particularly, this atmospheric communicating pipe 5 is 20m-30m higher than the distance on earth's surface, is preferably 30m.Simultaneously, the two ends of liquid recovery tube 6 are connected with the dosing pipeline 4 being positioned at outlet valve of metering pump door 7 exit with dosing batch meter 1 respectively, so that when dosing pipeline 4 is communicated with air by atmospheric communicating pipe 5, the liquid in dosing pipeline 4 is recycled in dosing batch meter 1 as far as possible fully.Particularly, as shown in Figure 1, this liquid recovery tube 6 is made up of the level pipe be connected and vertical pipe, the end of level pipe is connected with the dosing pipeline 4 in outlet valve of metering pump door 7 exit, vertical pipe is connected with dosing batch meter 1, and the length of vertical pipe is 2m-4m, preferred 2m.
Further, in the utility model embodiment, air is communicated with by-pass valve control 9, liquid recovery control valve door 10 and is all preferably automatic valve, by electronic system control air be communicated with by-pass valve control 9, liquid recovery control valve door 10 closed, improve convenience during anti-freeze operation.
Particularly, in order to ensure the work-ing life of atmospheric communicating pipe 5 and liquid recovery tube 6, both are stainless steel tube, and the internal diameter of steel pipe is 20-30mm.Further, because liquid enters in dosing batch meter 1 by liquid recovery tube 6, in order to avoid liquid recovery tube 6 is by the corrosion of liquid, the inwall of liquid recovery tube 6 is coated with the corrosion protection coating that a layer thickness is 80-90 micron.In addition, in order to improve the work-ing life of atmospheric communicating pipe 5 and liquid recovery tube 6, can also all apply one deck antirust coating on atmospheric communicating pipe 5 and liquid recovery tube 6, and the thickness of this antirust coating can be between 0.5-2mm.
Particularly, when the specification of the dosing pipeline 4 used is DN25 (namely internal diameter is 25mm), length is 700m-900m, and such as, when being 800m, the volume of the dosing batch meter 1 used is 1m
3-2m
3, such as, be 2m
3time can meet the liquid all reclaimed in dosing pipeline 4.
In addition, be understandable that, the chemical chemicals dosing plant that the utility model embodiment provides also comprises multiple valve, and this multiple valve is arranged on dosing pipeline 4, to realize the flow control to liquid.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1., for the chemical chemicals dosing plant in power station, comprise the dosing batch meter being positioned at earth's surface and be communicated with by-pass valve control, liquid recovery control valve door with dosing volume pump, the therrmodynamic system being positioned at the above 30m-40m At The Height in earth's surface, dosing pipeline, atmospheric communicating pipe, liquid recovery tube, outlet valve of metering pump door, therrmodynamic system imported valve, air;
Described dosing batch meter, described dosing volume pump, described therrmodynamic system are connected in turn by described dosing pipeline, described outlet valve of metering pump door is arranged on the dosing pipeline in the exit of described dosing volume pump, and described therrmodynamic system imported valve is arranged on the dosing pipeline of described therrmodynamic system ingress;
One end of described atmospheric communicating pipe is connected with the dosing pipeline of described therrmodynamic system imported valve ingress, and the other end is connected with air, and described air connection by-pass valve control is arranged on described atmospheric communicating pipe;
The two ends of described liquid recovery tube are connected with the dosing pipeline of described dosing batch meter with described outlet valve of metering pump door exit respectively, and described liquid recovery control valve door is positioned in described liquid recovery tube.
2. chemical chemicals dosing plant according to claim 1, is characterized in that, described atmospheric communicating pipe is 20m-30m higher than the distance on earth's surface.
3. chemical chemicals dosing plant according to claim 2, it is characterized in that, described liquid recovery tube is made up of the level pipe be connected and vertical pipe, the end of described level pipe is connected with described dosing pipeline, described vertical pipe is connected with described dosing batch meter, and the length of described vertical pipe is 2m-4m.
4. chemical chemicals dosing plant according to claim 1, is characterized in that, described air is communicated with by-pass valve control, liquid recovery control valve door is automatic valve.
5. chemical chemicals dosing plant according to claim 4, is characterized in that, described atmospheric communicating pipe and liquid recovery tube are stainless steel tube, and internal diameter is 20-30mm.
6. chemical chemicals dosing plant according to claim 1, is characterized in that, the volume of described dosing batch meter is 1m
3-2m
3.
7. chemical chemicals dosing plant according to claim 6, is characterized in that, the specification of described dosing pipeline is DN25, and length is 700m-900m.
8. the chemical chemicals dosing plant according to any one of claim 1-7, is characterized in that, described chemical chemicals dosing plant also comprises multiple valve, is arranged on described dosing pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520606936.9U CN205045834U (en) | 2015-08-12 | 2015-08-12 | A chemical charge device for power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520606936.9U CN205045834U (en) | 2015-08-12 | 2015-08-12 | A chemical charge device for power plant |
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| Publication Number | Publication Date |
|---|---|
| CN205045834U true CN205045834U (en) | 2016-02-24 |
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ID=55339432
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|---|---|---|---|
| CN201520606936.9U Active CN205045834U (en) | 2015-08-12 | 2015-08-12 | A chemical charge device for power plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320054A (en) * | 2018-01-24 | 2018-07-24 | 江苏国信靖江发电有限公司 | The control method of actified solution, device, equipment and storage medium in desalting system |
-
2015
- 2015-08-12 CN CN201520606936.9U patent/CN205045834U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320054A (en) * | 2018-01-24 | 2018-07-24 | 江苏国信靖江发电有限公司 | The control method of actified solution, device, equipment and storage medium in desalting system |
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