CN110081000A - Generating set - Google Patents
Generating set Download PDFInfo
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- CN110081000A CN110081000A CN201910324585.5A CN201910324585A CN110081000A CN 110081000 A CN110081000 A CN 110081000A CN 201910324585 A CN201910324585 A CN 201910324585A CN 110081000 A CN110081000 A CN 110081000A
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- Prior art keywords
- water
- pump
- pipeline
- water tank
- valve
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/04—Units comprising pumps and their driving means the pump being fluid-driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/086—Sealings especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D7/00—Auxiliary devices for promoting water circulation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The present invention provides a kind of generating sets, comprising: steam feed pump；Oxygen-eliminating device；Condensate system, condensate system include variable frequency pump, and variable frequency pump is connected with oxygen-eliminating device；Seal water system, seal water system include water tank；Wherein, variable frequency pump and water tank are selectively connected with steam feed pump, to be sent into sealing water into steam feed pump.Generating set of the invention solves the problems, such as that the variable frequency pump of generating set in the prior art can not achieve depth frequency conversion.
Description
Technical field
The present invention relates to power fields, in particular to a kind of generating set.
Background technique
At home, power field leading position will be occupied in coal-fired thermal power generation a very long time.Improve power generation effect
Rate, reduce pollution, to economize on resources be the developing direction of fired power generating unit.For electric power enterprise, using high capacity high parameter fire coal
While unit reduces coal consumption for power generation, it should also be noted that into thermal power plant, major pant item accounts for always the major part of factory's electricity, station service
Rate is higher, therefore subsidiary engine energy-saving potential is quite big, is an energy-efficient important channel using converting operation.
A kind of more common unit, host use Shang Qi factory N1000-28/600/620 type steam turbine in the prior art,
Steam feed pump with two 50% capacity, heat pump producer are Sulzer, model: HPT 400-390-6S, heat pump shaft end seal
Using labyrinth seal, sealing water comes from condensed water, and design requirement sealing water main-piping pressure >=2.8MPa, condensation water pressure is always
Control causes solidifying pump frequency conversion not obtain the energy-saving effect that should have when design always in 2.8MPa or more.Deaerator level is adjusted
Door is adjusted using water on oxygen-eliminating device to automatically control, and causes condensed water main-piping pressure high, unit load pitch aperture in 1000MW
Only 70%, in unit underload 500MW, pitch aperture is only 16%, and water regulating valve restriction loss is larger on oxygen-eliminating device.
For the economical operation for realizing unit, achieve the purpose that energy-saving, same type units are investigated and carry out correlation
As long as analysis of experiments show that heat pump sealing water pressure >=1.8MPa can guarantee the safe and stable operation of heat pump, right on this basis
Unit coagulates pump frequency conversion and has carried out related optimization, makes condensed water pressure follow load linear regulation, but in order to guarantee heat pump sealing water
Pressure, former regulating valve control water level is still continued to use in deaerator level adjusting after solidifying pump frequency conversion optimization, is coagulated pump frequency conversion and is adjusted condensation jellyfish
Pipe pressure is not less than 1.8MPa, and water regulating valve aperture is still smaller on oxygen-eliminating device when unit underload after optimization, and only 30% or so.
Summary of the invention
The main purpose of the present invention is to provide a kind of generating sets, to solve the frequency conversion of generating set in the prior art
Water pump can not achieve the problem of depth frequency conversion.
To achieve the goals above, the present invention provides a kind of generating sets, comprising: steam feed pump；Oxygen-eliminating device；Condensation
Water system, condensate system include variable frequency pump, and variable frequency pump is connected with oxygen-eliminating device；Seal water system, seal water system packet
Include water tank；Wherein, variable frequency pump and water tank are selectively connected with steam feed pump, to be sent into sealing into steam feed pump
Water.
Further, seal water system further include: the import of water pump, water pump is connected with water tank, the outlet of water pump and vapour
Dynamic feed pump is connected, so that the sealing water in water tank is sent into steam feed pump by water pump.
Further, water pump at least two, at least two water pumps are connected with water tank and steam feed pump；Wherein,
At least two water pumps are arranged in parallel.
Further, seal water system further include: filter, filter are arranged on the pipeline between water pump and water tank；
Pressure gauge, pressure gauge are arranged on the pipeline between water pump and water tank, and pressure gauge is used to obtain the pressure value difference of filter two sides.
Further, seal water system further include: one end of the first liquor charging pipeline, the first liquor charging pipeline is connected with water tank
Logical, the other end of the first liquor charging pipeline is connected with steam feed pump, and water pump is arranged on the first liquid pushing tube road；Water return pipeline,
One end of water return pipeline is connected with water tank, and the other end of water return pipeline is connected with the first liquor charging pipeline；Wherein, water pump go out
Mouth is connected with water return pipeline.
Further, the first liquid pushing tube road is provided with the first shut-off valve, and the first shut-off valve is for controlling the first liquid pushing tube
The connection and disconnection on road.
Further, throttle orifice and exhaust valve are provided on water return pipeline.
Further, condensate system further include: the second liquor charging pipeline, one end and the variable frequency pump phase of the second liquor charging pipeline
Connection, the other end of the second liquor charging pipeline are connected with steam feed pump；Wherein, the second liquid pushing tube road is provided with the second cut-off
Valve, the second shut-off valve are electric check valve, when being lower than preset value with the sealing water being sent into seal water system to steam feed pump,
Second shut-off valve is opened, and the second liquor charging pipeline connection, variable frequency pump is sent into sealing water into steam feed pump.
Further, seal water system further include: the first replenishing line, one end of the first replenishing line and condensate system
It is connected, the other end of the first replenishing line is connected with water tank, so that condensate system passes through the first replenishing line to water tank
Interior feeding condensed water.
Further, seal water system further include: one end of the second replenishing line, the second replenishing line is used for and fluid infusion case
It is connected, the other end of the second replenishing line is connected with water tank, so that fluid infusion case is sent by the second replenishing line into water tank
Enter liquid；Wherein, the second replenishing line can be arranged to on-off.
Further, the second replenishing line is connected with the first replenishing line, so that the second replenishing line is mended by first
Liquid pipeline is connected with water tank, seal water system further include: by-passing valve, by-passing valve are arranged on the first replenishing line；Wherein,
The tie point of two replenishing lines and the first replenishing line is between by-passing valve and condensate system.
Generating set of the invention, which passes through, to be provided with for providing the seal water system of sealing water to steam feed pump, can be with
Condensed water main-piping pressure in condensate system is discharged, i.e. depth frequency conversion may be implemented in variable frequency pump in condensate system.Having
Body is in use, be sent into sealing water into steam feed pump from the water tank of seal water system, and condensate system is mainly used for removing
Oxygen device provides condensed water, provides sealing water when something goes wrong in seal water system, is providing sealing water by condensate system, i.e., solidifying
The system of bearing water is only an auxiliary water supply system, without the pressure for considering to be sent into condensed water, to guarantee without variable frequency pump
The pressure of condensed water, therefore the variable frequency pump in condensate system can be made to realize depth frequency conversion, it solves in the prior art
The variable frequency pump of generating set the problem of can not achieve depth frequency conversion.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the structural schematic diagram of the embodiment of generating set according to the present invention.
Wherein, the above drawings include the following reference numerals:
10, steam feed pump；20, oxygen-eliminating device；30, condensate system；31, the second liquor charging pipeline；32, the second shut-off valve；
33, second one-way valve；40, seal water system；41, water tank；411, impingement baffle；42, water pump；43, filter；44, pressure gauge；
45, the first replenishing line；451, by-passing valve；46, the second replenishing line；47, the first liquor charging pipeline；471, the first shut-off valve；
472, the first check valve；48, the first pipeline；481, the first valve；49, water return pipeline；491, throttle orifice；492, exhaust valve；50,
Fluid infusion case；60, the first overflow passage；61, the first normal closed gate；62, the second overflow passage；63, the second normal closed gate；64,
Three overflow passages；65, visor.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
The present invention provides a kind of generating sets, referring to FIG. 1, generating set includes: steam feed pump 10；Oxygen-eliminating device
20；Condensate system 30, condensate system 30 include variable frequency pump, and variable frequency pump is connected with oxygen-eliminating device 20；Seal water system
40, seal water system 40 includes water tank 41；Wherein, variable frequency pump and water tank 41 are selectively connected with steam feed pump 10,
To be sent into sealing water into steam feed pump 10.
Generating set of the invention, which passes through, to be provided with for providing the seal water system 40 of sealing water to steam feed pump 10,
Condensed water main-piping pressure in condensate system 30 can be discharged, i.e. depth change may be implemented in variable frequency pump in condensate system 30
Frequently.When specifically used, sealing water is sent into steam feed pump 10 from the water tank 41 of seal water system 40, and condensate system
30 are mainly used for providing condensed water to oxygen-eliminating device 20, sealing water are provided when something goes wrong in seal water system 40, by condensed water
System 30 provides sealing water, i.e. condensate system 30 is only an auxiliary water supply system, without considering the pressure of feeding condensed water,
To guarantee the pressure of condensed water without variable frequency pump, therefore it is deep that the variable frequency pump in condensate system 30 can be made to realize
Frequency conversion is spent, solves the problems, such as that the variable frequency pump of generating set in the prior art can not achieve depth frequency conversion.
In order to which the sealing water in water tank 41 is sent in steam feed pump 10, seal water system 40 further include: water
Pump 42, the import of water pump 42 is connected with water tank 41, and the outlet of water pump 42 is connected with steam feed pump 10, so that water pump 42 will
Sealing water in water tank 41 is sent into steam feed pump 10.
In the present embodiment, by being provided with water pump 42, import and 41 phase of water tank of water pump 42 on seal water system 40
Connection, the outlet of water pump 42 are connected with steam feed pump 10, and when being sent into sealing water into steam feed pump 10, water pump 42 is opened
It is dynamic to suck sealing water out of water tank 41 and be sent in steam feed pump 10, to play sealing effect.
In the present embodiment, valve body is provided on the pipeline being connected between the import of water pump 42 and water tank 41, valve body is
Normally open valve.
In order to guarantee that seal water system 40 is steadily sent into sealing water to steam feed pump 10, water pump 42 is at least two
A, at least two water pumps 42 are connected with water tank 41 and steam feed pump 10；Wherein, at least two water pumps 42 are arranged in parallel.
In the present embodiment, by being at least two by water pump 42, and each water pump 42 is arranged in parallel, and is guaranteed with this more
A water pump 42 can be sent into sealing water to steam feed pump 10 simultaneously.
In view of the purity for the sealing water being sent into steam feed pump 10, as shown in Figure 1, seal water system 40 further include:
Filter 43, filter 43 are arranged on the pipeline between water pump 42 and water tank 41；Pressure gauge 44, pressure gauge 44 are arranged in water pump
On pipeline between 42 and water tank 41, pressure gauge 44 is used to obtain the pressure value difference of 43 two sides of filter.
In the present embodiment, by being provided with filter 43, filter 43 on the pipeline between water pump 42 and water tank 41
Sealing water for being sent out in water tank with strainer 41.And the setting of pressure gauge 44 may insure that filter 43 can be realized fully
Filter when that is, the pressure value difference in 43 two sides of filter does not meet preset value, can determine that the filter effect of filter 43 reduces, from
And it needs replacing.
In the present embodiment, it is also equipped with valve body on the pipeline between pressure gauge 44 (PDT) and filter 43, and valve body is
Normally opened valve body just needs to close under special circumstances.
In the present embodiment, 42 two sides of water pump are provided with water pressure gauge (PT), and two water pressure gauges are for detecting 42 liang of water pump
The pressure of side guarantees that the pressure of the sealing water come out out of water pump 42, the pressure of this sealing water need to guarantee steam-operating water supply with this
The sealed pressure of pump 10.
For the specific connection type of seal water system 40 and steam feed pump 10, as shown in Figure 1, seal water system 40 is also
It include: the first liquor charging pipeline 47, one end of the first liquor charging pipeline 47 is connected with water tank 41, the other end of the first liquor charging pipeline 47
It is connected with steam feed pump 10, water pump 42 is arranged on the first liquor charging pipeline 47；Water return pipeline 49, one end of water return pipeline 49
It is connected with water tank 41, the other end of water return pipeline 49 is connected with the first liquor charging pipeline 47；Wherein, the outlet of water pump 42 with return
Water lines 49 are connected.
In the present embodiment, the sealing water in water tank is sent to steam feed pump by the first liquor charging pipeline 47 by water pump 42
In 10, and a circulation loop is formd between water return pipeline 49 and the first liquor charging pipeline 47, it is ensured that in the first liquid pushing tube
While sealing water is sent into steam feed pump 10 in road 47, there is part sealing water to flow back into inside water tank, prevent from being sent into this
The line segments of sealing water are when something goes wrong, it is ensured that the still return water of water return pipeline 49, without being damaged to total system.
In the present embodiment, temperature sensor (TE) is provided on the first liquor charging pipeline 47.
Preferably, the first shut-off valve 471 is provided on the first liquor charging pipeline 47, the first shut-off valve 471 is for controlling first
The connection and disconnection of liquor charging pipeline 47.
In the present embodiment, the first shut-off valve 471 can be also possible to motor-driven valve for hand-operated valve, control the first liquor charging with this
The connection and disconnection of pipeline 47.
In the present embodiment, it is provided with the first check valve 472 on the first liquor charging pipeline 47, the first check valve 472 is located at the
Between one shut-off valve 471 and steam feed pump 10.
Preferably, throttle orifice 491 and exhaust valve 492 are provided on water return pipeline 49.
In the present embodiment, throttle orifice 491 is used to control the circling water flow rate on water return pipeline 49.
In the present embodiment, valve body is provided on water return pipeline 49, valve body is normally open valve.
Preferably, condensate system 30 further include: the second liquor charging pipeline 31, one end of the second liquor charging pipeline 31 and frequency conversion water
Pump is connected, and the other end of the second liquor charging pipeline 31 is connected with steam feed pump 10；Wherein, it is arranged on the second liquor charging pipeline 31
There is the second shut-off valve 32, the second shut-off valve 32 is electric check valve, with what is be sent into seal water system 40 to steam feed pump 10
When sealing water is lower than preset value, the second shut-off valve 32 is opened, and the connection of the second liquor charging pipeline 31, variable frequency pump is to steam feed pump 10
Interior feeding sealing water.
In the present embodiment, the second shut-off valve 32 on the second liquor charging pipeline 31 is motor-driven valve, i.e., in seal water system 40
When the sealing water being sent into steam feed pump 10 is lower than preset value, the second shut-off valve 32 is automatically turned on, the second liquid pushing tube at this time
Road 31 is connected to, and variable frequency pump is sent into sealing water into steam feed pump 10, guarantees the sealing water in steam feed pump 10 not with this
It will disconnect.
In the present embodiment, the first liquor charging pipeline 47 is connected with the second liquor charging pipeline 31, and tie point is located at second section
Only valve 32 between steam feed pump 10.
In the present embodiment, second one-way valve 33 is provided on the second liquor charging pipeline 31, second one-way valve 33 is located at second
Between shut-off valve 32 and steam feed pump 10.
In order to guarantee the abundance of the sealing water in water tank 41, as shown in Figure 1, seal water system 40 further include: first mends
One end of liquid pipeline 45, the first replenishing line 45 is connected with condensate system 30, the other end and water of the first replenishing line 45
Case 41 is connected, so that condensate system 30 is sent into condensed water into water tank 41 by the first replenishing line 45.
In the present embodiment, condensate system 30 is sent into condensed water into water tank 41 by the first replenishing line 45, i.e., solidifying
The extra condensed water born water in system 30 can be added into water tank 41.
Preferably, seal water system 40 further include: one end of the second replenishing line 46, the second replenishing line 46 is used for and benefit
Liquid case 50 is connected, and the other end of the second replenishing line 46 is connected with water tank 41, so that fluid infusion case 50 passes through the second liquid supplementation pipe
Liquid is sent into water tank 41 in road 46；Wherein, the second replenishing line 46 can be arranged to on-off.
In the present embodiment, the liquid filled into fluid infusion case 50 is chemical water, that is, needs to guarantee certain purity.Fluid infusion case
The liquid filled into 50 can be salt water.
In the present embodiment, which can be provided by condensed water or salt water, while also be can be absorbed and being determined cold water
It overflows and discharges water, reduce full factory's water consumption to the greatest extent.
In the present embodiment, it is provided with a normally closed valve body on the second replenishing line 46, and is set on the first replenishing line 45
It is equipped with a normally opened valve body.
Preferably, the second replenishing line 46 is connected with the first replenishing line 45, so that the second replenishing line 46 passes through the
One replenishing line 45 is connected with water tank 41, seal water system 40 further include: by-passing valve 451, the setting of by-passing valve 451 are mended first
On liquid pipeline 45；Wherein, the tie point of the second replenishing line 46 and the first replenishing line 45 is located at by-passing valve 451 and condensation water system
Between system 30.
In order to guarantee can into water tank 41 feeding-in liquid, seal water system 40 further include: the first pipeline 48, the first pipeline
48 both ends are connected with the first replenishing line 45, and the first valve 481, by-passing valve 451 and are provided on the first pipeline 48
One valve 481 is arranged in parallel；Wherein, the first valve 481 is used to control the connection and disconnection of the first pipeline 48.
In the present embodiment, the first valve 481 is a normally opened valve, when the pipeline where by-passing valve 451 can not fluid infusion
It is just to need to open.
In the present embodiment, water tank is internally provided with an impingement baffle 411, the second replenishing line 46 and the first replenishing line
The liquid filled into 45 is required by entering in water tank 41 after impingement baffle 411, i.e., impingement baffle 411 is for buffering.
Preferably, seal water system 40 further include: the first overflow passage 60, one end of the first overflow passage 60 and water tank 41
Top be connected, the other end of the first overflow passage 60 is used for and collects water tank and be connected, and is arranged on the first overflow passage 60
There is the first normal closed gate 61.One end of second overflow passage 62, the second overflow passage 62 is connected with the bottom end of water tank 41, and second
The other end of overflow passage 62 is used to be connected with collection water tank, and the second normal closed gate 63 is provided on the second overflow passage 62.
One end of third overflow passage 64, third overflow passage 64 is connected with the top of water tank 41, third overflow passage 64 it is another
End is connected with the lower part of water tank 41, is provided on third overflow passage 64 for observing the water flow in third overflow passage 64
Visor 65；Wherein, third overflow passage 64 can be used for being connected with collection water tank.
In the present embodiment, the sealing water flowed out in steam feed pump 10 flows back into oxygen-eliminating device 20 and condensate system 30
It is interior.
For a specific embodiment of generating set of the invention:
Generating set of the invention increases independent heat pump seal water system (seal water system 40) newly, this system is arranged two
Heat pump sealing water booster (water pump 42) simultaneously configures a 10m3Water tank 41, after transformation heat pump sealing water booster provide
Sealing water is connected on former sealing waterpipe and provides sealing water exclusively for two heat pumps, respectively sets manual isolating door with former condensate system
(the first shut-off valve 471) realizes that heat pump sealing water two-way water source manually operated door is opened when unit operates normally, normally by increasing vapour newly
Pump seal water booster provides heat pump sealing water, and former condensed water steam supply pump seal water is as spare.
Heat pump sealing water is provided by newly-increased heat pump sealing water booster when generating set of the invention operates normally, condensed water
As alternate source, guarantee the safe and stable operation of heat pump.After the transformation of heat pump seal water system, condensation water pressure is released
Come, control deaerator level, Condensate Pump Frequency Conversion are changed to by control condensed water main-piping pressure after solidifying pump frequency conversion operation investment is automatic
Running frequency controls between 27~50HZ (corresponding 861~1485rpm of revolving speed).
Following table are as follows: the solidifying pump depth frequency conversion related data of unit is following (water homophony door standard-sized sheet on oxygen-eliminating device):
Energy-saving effect after solidifying pump depth Frequency Conversion Modification:
Unit load water homophony valve standard-sized sheet on oxygen-eliminating device between 500-1000MW is realized after solidifying pump depth frequency conversion, will be saved
Stream loss falls below minimum, reduces station service power consumption rate, closes function to guarantee that the safety of unit increases water tune valve override on oxygen-eliminating device
Can, prevent solidifying pump frequency conversion device tripping power frequency connection from opening rear oxygen-eliminating device full water；Deaerator level is by upper water tune valve or solidifying pump frequency conversion two-way
Autonomous control system controls, throw deaerator level it is automatic when can only select to throw wherein all the way, cannot put into and increase same simultaneously
When investment locking；For the safe operation for guaranteeing unit, unit load is greater than 500MW Shi Youning pump frequency conversion and automatically controls oxygen-eliminating device
Water automatically controls deaerator level by water pitch on oxygen-eliminating device when load is lower than 500MW.
Energy-saving effect is obvious after solidifying pump depth Frequency Conversion Modification, the more former converting operation mode of condensate pump electric current under equal load
Decline 40A or so, solidifying pump power consumption rate is reduced to 0.13% by 0.24% before, has dropped 0.1%.
Following table are as follows: solidifying to pump former frequency conversion and depth frequency conversion electric current contrast table:
According to upper table analysis, the lower energy-saving effect of unit load is more obvious after solidifying pump depth frequency conversion, coagulates pump discharge pressure drop
Low bigger, electric current decline is more, current reduction about 50A when underload.
Following table are as follows: Energy-saving Situation (is calculated) by unit load rate 80%:
Electricity 26188kwh is saved daily when can be seen that after coagulating pump depth frequency conversion according to upper table than power frequency operation, by machine
1 year operation 7000h of group is calculated, and annual to save about 7,640,000 kwh of electricity, (every degree electricity presses 0.4 to 305.6 ten thousand yuan of annual save the cost
Member calculates), about 2,840,000 kwh of electricity, 113.6 ten thousand yuan of annual save the cost are saved when than former converting operation every year.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements:
Generating set of the invention, which passes through, to be provided with for providing the seal water system 40 of sealing water to steam feed pump 10,
Condensed water main-piping pressure in condensate system 30 can be discharged, i.e. depth change may be implemented in variable frequency pump in condensate system 30
Frequently.When specifically used, sealing water is sent into steam feed pump 10 from the water tank 41 of seal water system 40, and condensate system
30 are mainly used for providing condensed water to oxygen-eliminating device 20, sealing water are provided when something goes wrong in seal water system 40, by condensed water
System 30 provides sealing water, i.e. condensate system 30 is only an auxiliary water supply system, without considering the pressure of feeding condensed water,
To guarantee the pressure of condensed water without variable frequency pump, therefore it is deep that the variable frequency pump in condensate system 30 can be made to realize
Frequency conversion is spent, solves the problems, such as that the variable frequency pump of generating set in the prior art can not achieve depth frequency conversion.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so that presently filed embodiment described herein for example can be in addition to herein
Sequence other than those of diagram or description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units not
Those of be necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for these processes, side
The intrinsic other step or units of method, product or equipment.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of generating set characterized by comprising
Steam feed pump (10)；
Oxygen-eliminating device (20)；
Condensate system (30), the condensate system (30) includes variable frequency pump, the variable frequency pump and the oxygen-eliminating device
(20) it is connected；
Seal water system (40), the seal water system (40) include water tank (41)；
Wherein, the variable frequency pump and the water tank (41) are selectively connected with the steam feed pump (10), with to institute
It states and is sent into sealing water in steam feed pump (10).
2. generating set according to claim 1, which is characterized in that the seal water system (40) further include:
The import of water pump (42), the water pump (42) is connected with the water tank (41), the outlet of the water pump (42) with it is described
Steam feed pump (10) is connected, so that the sealing water in the water tank (41) is sent into the steam-operating water supply by the water pump (42)
It pumps in (10).
3. generating set according to claim 2, which is characterized in that the water pump (42) is at least two, at least two
The water pump (42) is connected with the water tank (41) and the steam feed pump (10)；
Wherein, at least two water pumps (42) are arranged in parallel.
4. generating set according to claim 2 or 3, which is characterized in that the seal water system (40) further include:
Filter (43), filter (43) setting is on the pipeline between the water pump (42) and the water tank (41)；
Pressure gauge (44), pressure gauge (44) setting is on the pipeline between the water pump (42) and the water tank (41), institute
Pressure gauge (44) are stated for obtaining the pressure value difference of the filter (43) two sides.
5. generating set according to claim 2, which is characterized in that the seal water system (40) further include:
One end of first liquor charging pipeline (47), the first liquor charging pipeline (47) is connected with the water tank (41), and described first
The other end of liquor charging pipeline (47) is connected with the steam feed pump (10), and the water pump (42) is arranged in first liquor charging
On pipeline (47)；
One end of water return pipeline (49), the water return pipeline (49) is connected with the water tank (41), the water return pipeline (49)
The other end be connected with the first liquor charging pipeline (47)；
Wherein, the outlet of the water pump (42) is connected with the water return pipeline (49).
6. generating set according to claim 5, which is characterized in that be provided with first on the first liquor charging pipeline (47)
Shut-off valve (471), first shut-off valve (471) are used to control the connection and disconnection of the first liquor charging pipeline (47).
7. generating set according to claim 5, which is characterized in that be provided with throttle orifice on the water return pipeline (49)
(491) and exhaust valve (492).
8. generating set according to claim 2, which is characterized in that the condensate system (30) further include:
One end of second liquor charging pipeline (31), the second liquor charging pipeline (31) is connected with the variable frequency pump, and described second
The other end of liquor charging pipeline (31) is connected with the steam feed pump (10)；
Wherein, it is provided with the second shut-off valve (32) on the second liquor charging pipeline (31), second shut-off valve (32) is electronic
Shut-off valve, when being lower than preset value with the sealing water being sent into the seal water system (40) Xiang Suoshu steam feed pump (10), institute
State the second shut-off valve (32) unlatching, the second liquor charging pipeline (31) connection, the variable frequency pump is to the steam feed pump
(10) sealing water is sent into.
9. generating set according to claim 1, which is characterized in that the seal water system (40) further include:
One end of first replenishing line (45), first replenishing line (45) is connected with the condensate system (30), institute
The other end for stating the first replenishing line (45) is connected with the water tank (41), so that the condensate system (30) is described in
Condensed water is sent into first replenishing line (45) Xiang Suoshu water tank (41).
10. generating set according to claim 9, which is characterized in that the seal water system (40) further include:
Second replenishing line (46), one end of second replenishing line (46) with fluid infusion case (50) for being connected, and described the
The other end of two replenishing lines (46) is connected with the water tank (41), so that the fluid infusion case (50) passes through second fluid infusion
Liquid is sent into pipeline (46) Xiang Suoshu water tank (41)；
Wherein, second replenishing line (46) can be arranged to on-off.
11. generating set according to claim 10, which is characterized in that second replenishing line (46) and described first
Replenishing line (45) is connected, so that second replenishing line (46) passes through first replenishing line (45) and the water tank
(41) it is connected, the seal water system (40) further include:
By-passing valve (451), the by-passing valve (451) are arranged on first replenishing line (45)；
Wherein, the tie point of second replenishing line (46) and first replenishing line (45) is located at the by-passing valve
(451) between the condensate system (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910324585.5A CN110081000A (en) | 2019-04-22 | 2019-04-22 | Generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910324585.5A CN110081000A (en) | 2019-04-22 | 2019-04-22 | Generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110081000A true CN110081000A (en) | 2019-08-02 |
Family
ID=67415919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910324585.5A Pending CN110081000A (en) | 2019-04-22 | 2019-04-22 | Generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110081000A (en) |
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| CN110347201A (en) * | 2019-08-12 | 2019-10-18 | 江苏方天电力技术有限公司 | A kind of condensed water auxiliary frequency modulation control method and system unidirectionally accurately controlled |
| CN113031681A (en) * | 2021-03-03 | 2021-06-25 | 江苏南通发电有限公司 | Condensation depth frequency conversion optimization method for thermal generator set |
| CN113482900A (en) * | 2021-07-28 | 2021-10-08 | 西安热工研究院有限公司 | Non-coaxial steam-driven feed pump preposed pump speed regulating system under deep frequency conversion working condition |
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Application publication date: 20190802 |