CN209445471U - A kind of electricity heating regenerative apparatus - Google Patents
A kind of electricity heating regenerative apparatus Download PDFInfo
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- CN209445471U CN209445471U CN201822084124.9U CN201822084124U CN209445471U CN 209445471 U CN209445471 U CN 209445471U CN 201822084124 U CN201822084124 U CN 201822084124U CN 209445471 U CN209445471 U CN 209445471U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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Abstract
The utility model embodiment discloses a kind of electric heating regenerative apparatus, including thermoelectricity heating system, heat network system, heat-accumulator tank, return water main pipe, the water main pipe of the heat network system are respectively communicated with inlet pipeline, the water supply pipe of the thermoelectricity heating system；The inlet pipeline of the heat-accumulator tank, the first outlet pipeline are sequentially connected on the water supply pipe of the thermoelectricity heating system.The utility model is while meeting heat network system demand, the electric energy that thermoelectricity unit can be made full use of to generate, the thermal energy storage converted is in heat-accumulator tank, improve the heat storage capacity of heat-accumulator tank, electric network peak moment thermoelectricity unit electric load is converted to heat network system thermic load, power grid caused by reducing because of thermoelectricity peak modulation capacity is avoided to receive the attenuating of wind-powered electricity generation ability.
Description
Technical field
The utility model embodiment is related to thermoelectric heating technical field more particularly to a kind of electric heating regenerative apparatus.
Background technique
Renewable energy high speed development in recent years, especially wind-powered electricity generation are gradually increased in power grid power supply specific gravity, to guarantee that power grid is inhaled
It receives wind-powered electricity generation, enough fossil capacities is needed to carry out peak regulation；As Wind Power Generation Industry base, wind-abandoning phenomenon is particularly evident for the Northeast,
There are serious " nest electricity " phenomenons, and extra electric production capacity can not digest nearby, therefore country proposes the road of thermoelectricity depth peak regulation
Line.Northeast Regional thermoelectricity company active response national policy, it is proposed or carry out depth tune building high-power electric heating heat storage boiler
Peak improves the ability and range of unit depth peak regulation, adapts to the requirement of national depth peak regulation, improves the energy that power grid receives wind-powered electricity generation
Power achievees the purpose that energy conservation, emission reduction.
Because dry monsoon is big, the Winter heat supply stage is precisely thermoelectricity rate of load condensate higher stage, and power grid is caused to generate electricity in wind-powered electricity generation
Generated energy after amount increases is higher than power supply volume (fired power generating unit cannot be mediated by needing the condition of heat supply to be limited), so as to cause portion
Although a point Wind turbines can generate electricity, power grid can not be received, and cause a large amount of thermoelectricity as clean energy resource to there is " abandoning electricity " existing
As occurring.
Currently, can be by the electric heating regenerative apparatus with electrode boiler (in the application referred to as " electric boiler ") by thermoelectricity
The electric energy that unit generates is converted into thermal energy, it can be achieved that electric load is converted to heat network system thermic load, to reach fired power generating unit ginseng
With depth peak regulation, achieve the purpose that heat network system absorbs thermoelectricity load.
Fig. 1 is please referred to, Fig. 1 is a kind of schematic illustration of typical electric heating regenerative apparatus.
As shown in Figure 1, the electricity heating regenerative apparatus includes multiple thermoelectricity heating systems 1, each thermoelectricity heating system includes
Electric boiler 11, heat exchanger 12, the power output end of the electrode connection thermoelectricity unit of electric boiler 11, electric boiler 11 and heat exchanger
12 form electric boiler circulation, and when 11 furnace of grill pan puts into operation, thermoelectricity unit output load is transferred on electric boiler 11,
Electric boiler 11 transfers heat to heat by heat exchanger by electrode heat release to electric boiler circulation, electric boiler recirculated water
Net system 2.
For enhance electric boiler peak modulation capacity, electricity heating regenerative apparatus one heat-accumulator tank 3 of Aided design, heat-accumulator tank 3
Inlet pipeline, outlet pipeline are connected on the water supply pipe of the thermoelectricity heating system 1, and the purpose of setting heat-accumulator tank 3 is
The partial heat that electric boiler 11 generates is stored in heat-accumulator tank 3.When 11 power of electric boiler is greater than 2 workload demand of heat network system
When, by after-heat to 3 accumulation of heat of heat-accumulator tank, until 3 tank of accumulation of heat stores full hot water.
In this scheme, it is heat network system supply water temperature that heat-accumulator tank, which stores hot water, in heat network system preliminary heating period, latter stage,
Since supply water temperature generally need to only maintain 60 DEG C or so, the heat storage capacity of corresponding heat-accumulator tank is with heat network system supply water temperature
It reduces and declines, cause the heat storage capacity of heat-accumulator tank to reduce, the extra electric energy of thermoelectricity unit cannot be utilized, and cause the wave of the energy
Take.
Therefore, when heat network system supply water temperature is lower, the heat storage capacity of heat-accumulator tank how is improved, thermoelectricity unit is extra
Electric energy be used, become those skilled in the art's technical problem urgently to be resolved.
Utility model content
The utility model embodiment provides a kind of electric heating regenerative apparatus, to solve to supply in heat network system in the prior art
When coolant-temperature gage is lower, the technical issues of how improving the heat storage capacity of heat-accumulator tank.
In order to solve the above-mentioned technical problem, the utility model provides a kind of electric heating regenerative apparatus, including thermoelectricity heat supply
System, heat network system, heat-accumulator tank, return water main pipe, the water main pipe of the heat network system are respectively communicated with the thermoelectricity heating system
The first inlet pipeline, water supply pipe；The second inlet pipeline, the first outlet pipeline of the heat-accumulator tank are sequentially connected to the heat
On the water supply pipe of electric heating system.
Preferably, the outlet pipeline of the heat-accumulator tank is equipped with booster, and the water inlet of the booster is connected to the storage
The water outlet of hot tank, the water outlet of the booster are connected to the water supply pipe of the thermoelectricity heating system.
Preferably, the pipeline between the booster and the water supply pipe of the thermoelectricity heating system is equipped with motor switch
Valve.
Preferably, the heat-accumulator tank is additionally provided with the second outlet pipeline, and second outlet pipeline is connected to the thermoelectricity heat supply
First inlet pipeline of system.
Preferably, the thermoelectricity heating system includes no less than one thermoelectricity heating plant, the thermoelectricity heating plant
Including electric boiler, heat exchanger, the power output end of the electrode connection thermoelectricity unit of the electric boiler, the medium of the electric boiler goes out
Mouthful, medium answers back the medium inlet for being separately connected the heat exchanger, media outlet.
Preferably, the heat exchanger is plate heat exchanger.
Preferably, the first inlet pipeline of the thermoelectricity heating system is equipped with no less than one heat network system circulation
Pump, the water inlet of institute's heat network system circulating pump are connected to the return water main pipe of the heat network system, and the heat network system circulating pump goes out
The mouth of a river is connected to the water inlet of the thermoelectricity heating system.
Preferably, the quantity of the heat network system circulating pump is 3.
Preferably, the first inlet pipeline of the thermoelectricity heating system is equipped with return water rotary sieve, the return water rotation
The water outlet of strainer connects evacuated tube, and the water outlet of the evacuated tube is connected to trench.
It preferably, further include sewage pipe, the sewage pipe water inlet is connected to the water outlet of the return water rotary sieve, described
The water outlet of sewage pipe is connected to trench.
Electricity heating regenerative apparatus provided by the utility model, is connected to thermoelectricity heat supply system for the first outlet pipeline of heat-accumulator tank
On the water supply pipe of system, the electric energy that thermoelectricity heating system can make full use of electric network peak period thermoelectricity unit to generate provides temperature
Higher recirculated water, the higher recirculated water a part of temperature enters heat network system in thermoelectricity heating system water supply pipe, a part
It is carried out in into heat-accumulator tank, and the lower recirculated water of temperature stored in heat-accumulator tank enters in thermoelectricity heating system water supply pipe
Hybrid cooling is carried out with the higher recirculated water of temperature, the lower recirculated water of temperature needed for it is provided for heat network system.Therefore, originally
Utility model is while meeting heat network system demand (needing the lower recirculated water of temperature), when can make full use of electric network peak
The electric energy that section thermoelectricity unit generates, the thermal energy storage converted improves the heat storage capacity of heat-accumulator tank in heat-accumulator tank, by power grid
The spike period electric energy of thermoelectricity unit is used, and power grid caused by reducing because of thermoelectricity peak modulation capacity is avoided to receive wind-powered electricity generation ability
Lower.
Detailed description of the invention
It, below will be to reality in order to illustrate more clearly of the embodiments of the present invention or technical solution in the prior art
It applies mode or attached drawing needed to be used in the description of the prior art is briefly described.It should be evident that attached in being described below
Figure is only exemplary, for those of ordinary skill in the art, without creative efforts, can be with
It is extended according to the attached drawing of offer and obtains other implementation attached drawings.
Structure depicted in this specification, ratio, size etc., only to cooperate the revealed content of specification, for
Those skilled in the art understands and reads, and is not intended to limit the utility model enforceable qualifications, therefore does not have technology
On essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the utility model institute energy
Under the effect of generation and the purpose that can reach, it should all still fall in the revealed technology contents of the utility model and obtain the model that can cover
In enclosing.
Fig. 1 is a kind of theory structure schematic diagram of the electric heating regenerative apparatus of prior art；
Fig. 2 is the theory structure schematic diagram for the electric heating regenerative apparatus that a kind of embodiment of the utility model provides；
Wherein, in Fig. 1-Fig. 2:
Thermoelectricity heating system 1, electric boiler 11, heat exchanger 12, the first inlet pipeline 13, water supply pipe 14, heat network system 2,
Return water main pipe 21, heat-accumulator tank 3, the second inlet pipeline 31, the first outlet pipeline 32, the second outlet pipeline 33, rises water main pipe 22
Press pump 4, electric switching valve 5, heat network system circulating pump 6, evacuated tube 7, sewage pipe 8, return water rotary sieve 9.
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily, it is clear that described embodiment is
The utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the utility model protection
Range.
The term on cited such as "upper", "lower", " left side ", the right side in this specification ", " centre ", is merely convenient to describe
Be illustrated, rather than to limit the enforceable range of the utility model, relativeness is altered or modified, without substantive change
Under technology contents, when being also considered as the enforceable scope of the utility model.
Fig. 2 is please referred to, Fig. 2 is the theory structure signal for the electric heating regenerative apparatus that a kind of embodiment of the utility model provides
Figure.
As shown in Fig. 2, it is provided by the utility model electricity heating regenerative apparatus include thermoelectricity heating system 1, heat network system 2,
Heat-accumulator tank 3, thermoelectricity heat network system 2 are used to for the electric energy that thermoelectricity unit generates being converted into be the thermal energy that heat network system 2 uses,
2 user of heat network system is used to be heat user heat supply, and return water main pipe 21, the water main pipe 22 of the heat network system 2 are respectively communicated with institute
The first inlet pipeline 13, the water supply pipe 14 of thermoelectricity heating system 1 are stated, thermoelectricity heating system 1 and heat network system 2, which are formed, to be recycled
System, it enters right in the water main pipe 22 of heat network system 2 through water supply pipe 14 after recirculated water heats in thermoelectricity heating system 1
Heat user carries out heat supply, then the first inlet pipeline 13 of the return water main pipe 21 through heat network system 2, thermoelectricity heating system 1 flows back to heat
In electric heating system 1.
The second inlet pipeline 31, the first outlet pipeline 32 of the heat-accumulator tank 3 are sequentially connected to the thermoelectricity heating system 1
Water supply pipe 12 on.When 11 power of electric boiler is greater than 2 workload demand of heat network system, by after-heat to 3 accumulation of heat of heat-accumulator tank,
Until heat-accumulator tank 3 stores full hot water, specifically, the higher recirculated water of the temperature generated in thermoelectricity heating system 1 through heat-accumulator tank 3 the
Two inlet pipelines 31 enter accumulation of heat in heat-accumulator tank 3, and the lower recirculated water of temperature in heat-accumulator tank 3 is flowed into through the first outlet pipeline 32
In the water supply pipe 14 of thermoelectricity heating system 1, and heat supply network is flowed into after the higher recirculated water hybrid cooling of temperature in water supply pipe 14
In system 2.
It should be noted that the second inlet pipeline 31 of the heat-accumulator tank 3, the first outlet pipeline 32 are supplied with the thermoelectricity
The link position of the water supply pipe 14 of hot systems 1, the second inlet pipeline 31 are connected to the water supply pipe of the thermoelectricity heating system 1
14 upstream, the first outlet pipeline 32 are connected to the downstream of the water supply pipe 14 of the thermoelectricity heating system 1, are stored with guaranteeing to enter
Circulating water temperature in hot tank 3 is higher.
Electricity heating regenerative apparatus provided by the utility model, is connected to thermoelectricity heat supply for the first outlet pipeline of heat-accumulator tank 3
On the water supply pipe 14 of system 1, it is higher that the electric energy that thermoelectricity heating system 1 can make full use of thermoelectricity unit to generate provides temperature
Recirculated water, the higher recirculated water a part of temperature enters heat network system 2 in the water supply pipe 14 of thermoelectricity heating system 1, a part
It is carried out in into heat-accumulator tank 3, and the lower recirculated water of temperature stored in heat-accumulator tank 3 enters the water supply of thermoelectricity heating system 1
Hybrid cooling is carried out with the higher recirculated water of temperature in pipeline 14, provides the lower circulation of temperature needed for it for heat network system 2
Water.Therefore, the utility model, can be sufficiently sharp while meeting 2 demand of heat network system (needing the lower recirculated water of temperature)
The electric energy generated with electric network peak period thermoelectricity unit, the thermal energy storage converted improve heat-accumulator tank 3 in heat-accumulator tank 3
Heat storage capacity, by the electric network peak period, the electric energy of thermoelectricity unit is used, and avoids electricity caused by reducing because of thermoelectricity peak modulation capacity
Net receives the attenuating of wind-powered electricity generation ability.
In preferred scheme, flow is imported and exported in order to balance heat-accumulator tank 3, the outlet pipeline of the heat-accumulator tank 3, which is equipped with, to be risen
Press pump 4, the water inlet of the booster 4 are connected to the water outlet of the heat-accumulator tank 3, described in the water outlet connection of the booster 4
The water supply pipe 14 of thermoelectricity heating system 1.The running frequency of press pump is by the inlet flow rate of heat-accumulator tank 3 and the difference in flow of rate of discharge
It determines, to ensure pressure that heat-accumulator tank 3 is born in safe range, in specific scheme, booster 4 can select 900m3/
The booster 4 of h.
In preferred scheme, on the pipeline between the booster 4 and the water supply pipe 14 of the thermoelectricity heating system 1
Equipped with electric switching valve 5, when the supply water temperature needed for heat network system 2 is lower, electric switching valve 5 can be opened, in heat-accumulator tank 3
The recirculated water of temperature enter in the water supply pipe 14 of thermoelectricity heating system 1 and carry out mixing drop with the higher recirculated water of temperature
Temperature provides the lower recirculated water of temperature needed for it for heat network system 2.
As shown in Fig. 2, the higher recirculated water of temperature in the water supply pipe 14 of thermoelectricity heating system 1 through valve V12, V9,
V10, V11 enter in heat-accumulator tank 3, this pipeline is the second inlet pipeline 31 of heat-accumulator tank 3；The temperature stored in heat-accumulator tank 3 compared with
Low recirculated water enters 4 water inlet of booster after valve V1, V6, and thermoelectricity heating system 1 is entered after electrically operated valve 5
Water supply pipe in 12, this pipeline is the first outlet pipeline 32 of heat-accumulator tank 3.
Preferred scheme, the heat-accumulator tank 3 are additionally provided with the second outlet pipeline 33, and second outlet pipeline 33 is connected to described
First inlet pipeline 13 of thermoelectricity heating system 1.On the basis of above scheme, the supply water temperature needed for heat network system 2 compared with
Gao Shi can choose and close above-mentioned electric switching valve 5, namely closes the first above-mentioned outlet pipeline 32, open the second water outlet
Pipeline 33, thermoelectricity heating system 1 are directly 2 heat supply of heat network system, and the lower recirculated water of temperature is directly entered thermoelectricity in heat-accumulator tank 3
Heating system 1 is heated again, in this way, thermoelectricity heating system 1 can provide the higher temperature needed for it for heat network system 2
Recirculated water.
Specifically, the lower recirculated water of temperature stored in heat-accumulator tank 3 enters booster 4 after valve V1, V6 and intakes
Mouthful, by entering in 1 water supply pipe of thermoelectricity heating system after valve V5, V4, this pipeline is the second outlet pipeline of heat-accumulator tank 3
33。
In specific scheme, the thermoelectricity heating system 1 includes no less than one thermoelectricity heating plant, and the thermoelectricity supplies
Thermal includes electric boiler 11, heat exchanger 12, the power output end of the electrode connection thermoelectricity unit of the electric boiler 11, the electricity
Media outlet, the medium of boiler 11 are answered back the medium inlet for being separately connected the heat exchanger 12, media outlet.
Electric boiler 11 using heat exchange medium (such as: water or aqueous mixtures) high heat resistance characteristic, it is straight using three-phase electrode
Fever of discharging in the heat exchange medium for setting conductivity in boiler is connect, so that electric energy close to 100% transfer efficiency to convert
At thermal energy, hot water or steam are generated；It is heat supply network system to recirculated water that hot water or steam, which pass through heat exchanger 12 for the heat transfer in furnace,
It unites 2 heat supplies, recirculated water is back in furnace after heat exchanger 12 and heat network system 2 realize heat exchange absorbs heat again.
In preferred scheme, electric boiler 11 can use 10X12MW electric pole type electricity heating heat storage boiler.
In preferred scheme, the heat exchanger 12 is plate heat exchanger, and plate heat exchanger has biggish heat dissipation area, can
To improve the heat exchanger effectiveness of heat exchange medium and recirculated water.
In preferred scheme, the heat network system that the inlet pipeline of the thermoelectricity heating system 1 is equipped with no less than one is followed
Ring pump 6, the water inlet of institute's heat network system circulating pump 6 is connected to the return water main pipe 21 of the heat network system 2, and the heat network system follows
The water outlet of ring pump 6 is connected to the water inlet of the thermoelectricity heating system 1.Heat network system circulating pump 6 can will be in return water main pipe 21
The recirculated water of outflow is quickly pumped in the electric boiler 11 of thermoelectricity heating system 1.The heat network system circulating pump 6 can be selected
The circulating pump of 2500m3/h.
As shown in Fig. 2, the quantity of the heat network system circulating pump 6 can be 3,36 parallel connections of heat network system circulating pump are set
It sets.
In preferred scheme, the first inlet pipeline 13 of the thermoelectricity heating system 1 is equipped with return water rotary sieve 9, institute
The water outlet connection evacuated tube 7 of return water rotary sieve 9 is stated, the water outlet of the evacuated tube 7 is connected to trench.Return water rotary sieve 9
Can in the first inlet pipeline 13 gas and impurity be filtered.In preferred scheme, evacuated tube 7 can be by return water main pipe
Gas discharge in the recirculated water flowed out in 21, can be improved the cycle efficieny of recirculated water, reduce gas to the damage of circulation line
Evil.
It further include sewage pipe 8 in preferred scheme, 8 water inlet of sewage pipe is connected to going out for the return water rotary sieve 9
The water outlet at the mouth of a river, the sewage pipe 8 is connected to trench.Sewage pipe 8 can will be miscellaneous in the recirculated water flowed out in return water main pipe 21
Matter discharge.
Scheme provided by the utility model can effectively improve the deep peak regulation heat storage capacity of monoblock, further convert
The digestion of electric network peak period extra electric production capacity, enables power grid further to receive wind energy.
78 DEG C are increased to by 68 DEG C with the regenerator temperature of heat-accumulator tank heat-accumulator tank after engineering construction of a mating 5000m3
For, it is as follows to increase accordingly heat storage capacity:
Q=cm Δ t
Wherein: the specific heat capacity of water: c=4.2 × 103J/ (kg DEG C)
1MW=3.6GJ
Q=58.33MW
As it can be seen that the heat storage capacity of heat-accumulator tank can be greatly promoted, efficiently solve heat-accumulator tank at the beginning of heat supply, latter stage is because of heat supply network
Heat storage capacity declines problem caused by the reduction of supply water temperature.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want
Seek the range of protection.
Claims (10)
1. a kind of electricity heating regenerative apparatus, which is characterized in that including thermoelectricity heating system (1), heat network system (2), heat-accumulator tank
(3), the return water main pipe (21), water main pipe (22) of the heat network system are respectively communicated with the first of the thermoelectricity heating system (1)
Inlet pipeline (13), water supply pipe (14)；The second inlet pipeline (31) of the heat-accumulator tank (3), the first outlet pipeline (32) according to
On the secondary water supply pipe (14) for being connected to the thermoelectricity heating system (1).
2. electricity heating regenerative apparatus according to claim 1, which is characterized in that on the outlet pipeline of the heat-accumulator tank (3)
Equipped with booster (4), the water inlet of the booster (4) is connected to the water outlet of the heat-accumulator tank (3), the booster (4)
Water outlet is connected to the water supply pipe (14) of the thermoelectricity heating system (1).
3. electricity heating regenerative apparatus according to claim 2, which is characterized in that the booster (4) and the thermoelectricity supply
Pipeline between the water supply pipe (14) of hot systems (1) is equipped with electric switching valve (5).
4. electricity heating regenerative apparatus according to claim 1-3, which is characterized in that the heat-accumulator tank (3) also sets
Have the second outlet pipeline (33), second outlet pipeline (33) is connected to the first inlet pipeline of the thermoelectricity heating system (1)
(13)。
5. electricity heating regenerative apparatus according to claim 1, which is characterized in that the thermoelectricity heating system (1) includes not
Thermoelectricity heating plant less than one, the thermoelectricity heating plant include electric boiler (11), heat exchanger (12), the electric boiler
(11) power output end of electrode connection thermoelectricity unit, media outlet, the medium of the electric boiler (11), which are answered back, to be separately connected
The medium inlet of the heat exchanger (12), media outlet.
6. electricity heating regenerative apparatus according to claim 5, which is characterized in that the heat exchanger (12) is plate-type heat-exchange
Device.
7. electricity heating regenerative apparatus according to claim 1, which is characterized in that the first of the thermoelectricity heating system (1)
Inlet pipeline (13) is equipped with no less than one heat network system circulating pump (6), and the water inlet of institute's heat network system circulating pump (6) connects
Lead to the return water main pipe (21) of the heat network system (2), the water outlet of the heat network system circulating pump (6) is connected to the thermoelectricity heat supply
The water inlet of system (1).
8. electricity heating regenerative apparatus according to claim 7, which is characterized in that the number of the heat network system circulating pump (6)
Amount is 3.
9. electricity heating regenerative apparatus according to claim 7 or 8, which is characterized in that the of the thermoelectricity heating system (1)
One inlet pipeline (13) is equipped with return water rotary sieve (9), and the water outlet of the return water rotary sieve (9) connects evacuated tube (7),
The water outlet of the evacuated tube (7) is connected to trench.
10. electricity heating regenerative apparatus according to claim 9, which is characterized in that further include sewage pipe (8), the blowdown
The water outlet that (8) water inlet is connected to the return water rotary sieve (9) is managed, the water outlet of the sewage pipe (8) is connected to trench.
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| CN201822084124.9U CN209445471U (en) | 2018-12-12 | 2018-12-12 | A kind of electricity heating regenerative apparatus |
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| CN201822084124.9U CN209445471U (en) | 2018-12-12 | 2018-12-12 | A kind of electricity heating regenerative apparatus |
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ID=68014106
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109405033A (en) * | 2018-12-12 | 2019-03-01 | 许东升 | A kind of electricity heating regenerative apparatus |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109405033A (en) * | 2018-12-12 | 2019-03-01 | 许东升 | A kind of electricity heating regenerative apparatus |
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