CN107575369A - Air compressor remote centralized plenum system and its energy-saving control method - Google Patents
Air compressor remote centralized plenum system and its energy-saving control method Download PDFInfo
- Publication number
- CN107575369A CN107575369A CN201710924636.9A CN201710924636A CN107575369A CN 107575369 A CN107575369 A CN 107575369A CN 201710924636 A CN201710924636 A CN 201710924636A CN 107575369 A CN107575369 A CN 107575369A
- Authority
- CN
- China
- Prior art keywords
- air supply
- rig
- electric
- air
- electric compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a kind of air compressor remote centralized plenum system, including centralized high voltage supply station, type variable air supply duct, the rig being sequentially connected with；Described to concentrate high blast supply station to include PLC electric-control systems, electric compressor unit and intelligent air supply pipe network system, PLC electric-control systems can be realized to electric compressor unit coordinated signals；The type variable air supply duct includes a main air supply pipeline, some pre-buried air supply duct and rig intake stacks, the main air supply pipeline is connected with intelligent air supply pipe network, some the pre-buried air supply duct is parallel in main air supply pipeline, each branch's air supply pipeline is connected with rig intake stack, and the rig intake stack is connected with the air inlet of rig.The present invention has the characteristics that investment operation cost is low, concentrates that sync rates of supplying gas are high, energy consumption is low and pollution is small, and thoroughly the tradition of change mine and Hydropower Station Construction is supplied gas pattern.
Description
Technical field
The invention belongs to industrial energy saving control technology field, more particularly to a kind of air compressor remote centralized plenum system
And its energy-saving control method.
Background technology
The construction in existing mine blasting and power station provides power, energy consumption using the air compressor of diesel driven
Height, the pollution to environment is big (pollution of primary waste gases and waste oil is more serious), and operating cost of constructing is high, job site distance
Blast area is near, is unfavorable for safe construction.Compressor thermostatic valve is also known as temperature-sensing valve and is primarily used to the profit that control sprays into compressor head
Oil temperature, vital effect is played to the normal operation of air compressor machine.
At present, mine blasting and the air compressor remote centralized plenum system in power station are using traditional air pressure
Contracting machine is sent out from supply station, and crushing is serious after the gas pipeline of approach long range, it is impossible to meet surface mine, power station rock drilling,
The demand of mew is sprayed, meanwhile, traditional pattern investment operation cost of supplying gas is very high, concentrates the relatively low pollution to environment of sync rates of supplying gas
It is larger.
The content of the invention
The deficiency of the prior art more than, the technical problem to be solved in the present invention is to provide a kind of air compressor is remote
Cheng Jizhong plenum systems, the system have that investment operation cost is low, concentrates the spies such as sync rates of supplying gas are high, energy consumption is low and pollution is small
Point, the tradition for thoroughly changing mine and Hydropower Station Construction are supplied gas pattern.
The technical solution adopted in the present invention is：
A kind of air compressor remote centralized plenum system, including the centralized high voltage supply station, the type variable that are sequentially connected with are sent
Wind pipeline, rig；
It is described to concentrate high blast supply station to include PLC electric-control systems, electric compressor unit and intelligent air supply pipe network system,
The electric compressor unit includes several electric compressors, the PLC electric-control systems and each electric compressor electricity
Property connection, PLC electric-control systems can realize coordinated signals, be carried according to client using the plus/minus of tolerance distribution compressor, the intelligence
The pipe network system that can blow is connected with the exhaust outlet of each electric compressor；
The type variable air supply duct includes a main air supply pipeline, some pre-buried air supply duct and rig blast pipes
Road, the main air supply pipeline are connected with intelligent air supply pipe network, and some pre-buried air supply ducts are parallel to main air supply pipeline
On, some branch's air supply pipelines of end furcations of the main air supply pipeline, each branch's air supply pipeline is entered with rig
Wind pipeline is connected, and the rig intake stack is connected with the air inlet of rig.
Concentrate that high blast supply station is arranged on mine or power station Excavation blasting safe range is outer or more preferably, described
Remote region, and the equipment that the region is provided with electric power output.
Preferably, the exhaust end in each electric compressor installs rearmounted cooling system, the rearmounted cooling system
Independent pipeline on system, opened and closed by the rearmounted cooling system of the preposition Valve controlling of electric compressor.
Preferably, the main air supply pipeline, pre-buried air supply duct and branch's air supply pipeline use DN150 carbon steel tubing
Matter, the rig intake stack use high-voltage flexible pressurize airduct.
Preferably, band valve distribution pipe is mounted on each rig intake stack, with valve distribution pipe and rig
Air intake interface is connected.
Preferably, the main air supply pipeline one-time laying is on Permanent Slope packway, in the range of a kilometer radius
The mouth if several are given a dinner for a visitor from afar, the main air supply pipeline can not change pipe in the ladder section of side slope packway.
The embodiment of the present invention also provides a kind of electric compressor unit linkage energy-saving control method, and methods described includes following
Step：
S1, obtain the pressure measuring value that client needs to use tolerance supply side pressure force snesor；
S2, according to the pressure measuring value compared with the pressure threshold for defaulting in PLC；
S3, the power output according to the comparative result adjustment electric compressor unit, control the electronic pneumatics
The start quantity of machine unit.
Preferably, in step s3, in addition to：
S31：When the pressure measuring value is less than the minimum value of the pressure threshold, increase the electric compressor
The start quantity of unit；
S32：When the pressure measuring value is more than the maximum of the pressure threshold, reduce the electric compressor unit
Start quantity.
First stop first starting shooting preferably, following when increasing the start quantity of the electric compressor unit, it is rear to stop
The principle started shooting afterwards；When reducing the start quantity of the electric compressor unit, it then follows first start shooting and first stop, stopping after rear start
Principle only.
This programme has the advantages that compared with prior art：
The present invention can realize that the compressed air of high pressure is sent out from supply station using the air compressor of driven by power,
Crushing is small after the gas pipeline of approach long range, can meet the needs of surface mine, power station rock drilling, spray mew；This is long-range
National " energy-saving and emission-reduction " policy of the application active response of plenum system is concentrated, environmental pollution is small, while also has investment fortune
It is low to seek cost, concentration supply gas sync rates it is high the characteristics of, revolutionize the traditional construction pattern of mine and Hydropower Station Construction.
Brief description of the drawings
Fig. 1 is the structural representation of air compressor remote centralized plenum system of the present invention；
Fig. 2 is the structural plan of the centralized high voltage supply station of air compressor remote centralized plenum system of the present invention；
Fig. 3 is the piping arrangement of the type variable air supply duct of air compressor remote centralized plenum system of the present invention；
Fig. 4 is the flow chart of electric compressor unit linkage energy-saving control method of the present invention.
Shown in figure：1st, centralized high voltage supply station, 1.1, PLC electric-control systems, 1.2, electric compressor unit, 1.3, intelligence
Blow pipe network system, 1.4, electric compressor, 1.5, air compressor machine station, 1.6, ventilation window, 2, type variable air supply duct, 2.1,
Main air supply pipeline, 2.2, pre-buried air supply duct, 2.3, rig intake stack, 2.4, branch's air supply pipeline, 2.5, band valve distribution pipe,
3rd, rig.
Embodiment
In order that the purpose, technical scheme and advantage of the embodiment of the present invention are clearer, implement below in conjunction with the present invention
Technical scheme in example carries out clear, complete description, it is clear that and described embodiment is the section Example of the present invention, and
It is not all of embodiment.Based on embodiments of the invention, those of ordinary skill in the art are not before creative work is paid
The every other embodiment obtained is put, belongs to protection scope of the present invention.
As shown in Figures 1 to 3, the embodiments of the invention provide a kind of air compressor remote centralized plenum system, including it is suitable
Centralized high voltage supply station 1, type variable air supply duct 2, the rig 3 of secondary connection；It is described to concentrate high blast supply station 1 to include PLC electricity
Control system 1.1, electric compressor unit 1.2 and intelligent air supply pipe network system 1.3, if the electric compressor unit 1.2 includes
Dry electric compressor 1.4, wherein, PLC electric-control systems 1.1 are electrically connected with each electric compressor 1.4, the automatically controlled systems of PLC
System 1.4 can realize coordinated signals, be carried according to client using the plus/minus of tolerance distribution compressor, the intelligent air supply pipe network system
System 1.3 is connected with the exhaust outlet of each electric compressor 1.4；The type variable air supply duct 2 includes a main air-supply
Pipeline 2.1, some pre-buried air supply ducts 2.2 and rig intake stack 2.3, the main air supply pipeline 2.1 and intelligent air supply pipe
Net 1.3 is connected, and some pre-buried air supply ducts 2.2 are parallel in main air supply pipeline 2.1, the main air supply pipeline 2.1
Some branch's air supply pipelines 2.4 of end furcations, each branch's air supply pipeline 2.4 is connected with rig intake stack 2.3,
The rig intake stack 2.3 is connected with the air inlet of rig.
It is shown in Figure 2, centralized high voltage supply station 1 is established outside mine or power station Excavation blasting safe range or more
Remote region, it is ensured that the safety of personnel and equipment, meanwhile, centralized high voltage supply station 1 will be established in the area for having electric power output
Domain, so, mine exploiting field or Hydropower Station Construction area do not have to frequently set up the repetition complexity such as power network, transplanting electric pole, folding and unfolding cable
Work, effectively saved cost of investment, be greatly reduced the maintenance management cost of power grid construction and operation.It will concentrate high
PLC electric-control systems 1.1 and electric compressor unit 1.2 in blast supply station 1 are placed on different rooms, specifically by PLC
Electric-control system is arranged on transformer and Electric control room, and electric compressor unit 1.2 is arranged in air compressor machine station 1.5,
In the present embodiment, electric compressor unit 1.2 is provided with 4 electric compressors 1.5 and a standby electric compressor, specific
The quantity of electric compressor can be increased and decreased according to being actually needed during practice of construction, if being installed on air compressor machine station 1.5
Dry ventilation window 1.6, the temperature being conveniently adjusted in air compressor machine station 1.5.High blast supply station 1 is concentrated to employ intelligentized
Liquid crystal visual controller, it is possible to achieve coordinated signals, according to client using tolerance reasonable distribution compressor plus/minus carry, with up to
To the purpose of energy-conservation.Rearmounted cooling system (not indicated in figure) is installed additional in the exhaust end of every electric compressor 1.5, and its effect is
The temperature of the compressed air of discharge is reduced, the content of vapor in compressed air is discharged in appropriate reduction, to obtain what is relatively dried
Compressed air, to prevent compressed air separates out excessive aqueous water in the change of long-distance sand transport pipeline internal cause temperature from causing excessively
The pressure loss, in addition rearmounted cooling system have independent pipeline, by preposition valve can easily control this system open
And closing.Different applicable requirements and operating mode are applicable with this.
It is shown in Figure 4, further optimize the present embodiment, a kind of electric compressor unit linkage energy-saving control method, bag
Include following step：S1, obtain the pressure measuring value that client needs to use tolerance supply side pressure force snesor；S2, according to the pressure
Power measured value is compared with the pressure threshold for defaulting in PLC；S3, the electronic sky adjusted according to the comparative result
The power output of press unit, control the start quantity of the electric compressor unit；
S31, when the pressure measuring value is less than the minimum value of the pressure threshold, increase the electric compressor
The start quantity of unit；
S32, when the pressure measuring value be more than the pressure threshold maximum when, reduce the electric compressor unit
Start quantity；
During S31 and S32 is run, follow when increasing the start quantity of the electric compressor unit and first stop
First start shooting, the principle started shooting after rear stopping；When reducing the start quantity of the electric compressor unit, it then follows first start shooting and first stop
Only, the principle stopped after rear start.
Further, the control of the linkage energy-saving of electric compressor unit 1.2 also includes also having following work(in step S31
Energy：
S311, the scanning electric compressor 1.4 running status；
Whether S312, inquiry have the electric compressor that power output is reducing, when the sky for having power output reducing
During air compressor, increase the power output of the air compressor, when the air compressor that no power output is reducing,
Whether S313, the inquiry pressure measuring value are in lasting rising, when the pressure measuring value is in lasting rising, weight
Multiple step S1, when the pressure measuring value does not rise persistently, whether scanning has bootable air compressor, and having to start
Air compressor then start the air compressor, then send ultralow pressure warning message without bootable air compressor.
Further, the control of the linkage energy-saving of electric compressor unit 1.2 also includes also having following work(in step s 32
Energy：
S321：The running status of the air compressor is scanned, whether inquiry has the air compression that power output can reduce
Machine；
S322：When there is the air compressor that power output can reduce, reduce the power output of the air compressor；
S323：When the air compressor that no power output can reduce, whether scanning has the air compressor that can stop；
S324：When there is the air compressor that can stop, stopping the air compressor, when the air compression that can not stop
During machine, super-pressure warning message is sent.
By above-mentioned electric compressor unit linkage energy-saving control method, 34m can be achieved3/min、51m3/min、68m3/
min、85m3/min、102m3The demand of a variety of air quantity such as/min, parallel connection air-supply, the multiple requesting of series connection air-supply can be achieved.
Shown in Figure 3, main air supply pipeline 2.1, pre-buried air supply duct 2.2 and branch's air supply pipeline 2.4 use
DN150 carbon steel pipe materials, rig intake stack 2.3 use high-voltage flexible pressurize airduct.The main one-time laying of air supply pipeline 2.1 exists
On Permanent Slope packway, several mouths of giving a dinner for a visitor from afar, rank of the main air supply pipeline 2.1 in side slope packway are set in the range of 1 kilometer radius
In bench, do not have to change pipe if pressing mono- step ladder of 15m, in 10 ladder sections and move pipe (certainly during practice of construction
The length of main air supply pipeline 2.1 and main air supply pipeline 2.1 in ladder section can be timely adjusted according to the condition of construction of reality
Material, i.e., high-voltage flexible pressurize airduct can also be used in ladder section).During construction, there is the pipeline of a variety of latus rectums
Optional single maximum length can bear 5Mpa pressure, heatproof section is -10 DEG C to 80 DEG C, and elongation is less than ten thousand up to 100m
/ mono-, oil resistant, corrosion resistant excellent performance, the connection at non junction and right angle, weight is traditional material (steel pipe, wire rubber pipe)
1/10th.By accurately calculating and the use of flexible material, it is ensured that long-range discharge pressure loss is minimum.It can ensure
Pressure is almost without loss in 5 kilometer radius.
Further optimize the present embodiment, some pre-buried air supply ducts 2.2 are separated in main air supply pipeline 2.1, actually applying
, can be with pre-buried a plurality of pre-buried air supply duct 2.2 during work, and as construction increase pipeline can be lengthened, given pre-buried
One air-supply joint being connected with rig intake stack 2.3, each rig blast pipe are set every 50m on wind pipeline 2.2
Stop valve is mounted on road 2.3 to control the air intake of rig intake stack 2.3.The end furcations of the main air supply pipeline 2.1
Some branch's air supply pipelines 2.4, each branch's air supply pipeline 2.4 are connected with rig intake stack 2.3, and the rig enters
Wind pipeline 2.3 is connected with the air inlet of rig.Band valve distribution pipe 2.5, band are mounted on each rig intake stack
Valve distribution pipe 2.5 is connected with the air intake interface of rig.More bench drill machines 3 can be met by band valve distribution pipe 2.5 while used.
And consentrated air supply pressure stability and intelligentized control, the sync rates of an at most bench drill machine are improved, it is achieved thereby that collection
Beam formula is perforated, and effectively raising the synchronous efficiency of rig, (synchronous efficiency brings up to 30%, 35%) cost declines.So as to enabled
Consumption is greatly reduced.
The use of air compressor remote centralized plenum system, down-the-hole drill operation of the tradition using electricity as power is broken
In, the complicated process repeated of power network, transplanting electric pole, folding and unfolding cable is set up, effectively reduces cost of investment, more traditional ore deposit
Mountain and power station rock drilling arrangement and method for construction, energy consumption is lower, and waste gas discharge also greatly reduces, the energy-saving and emission-reduction of active response country
Policy.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (9)
- A kind of 1. air compressor remote centralized plenum system, it is characterised in that：Including be sequentially connected with centralized high voltage supply station, Type variable air supply duct, rig；It is described to concentrate high blast supply station to include PLC electric-control systems, electric compressor unit and intelligent air supply pipe network system, it is described Electric compressor unit includes several electric compressors, and the PLC electric-control systems electrically connect with each electric compressor Connect, PLC electric-control systems can realize coordinated signals, be carried according to client using the plus/minus of tolerance distribution compressor, the intelligence is sent Wind pipe network system is connected with the exhaust outlet of each electric compressor；The type variable air supply duct includes a main air supply pipeline, some pre-buried air supply duct and rig intake stacks, institute State main air supply pipeline with intelligent air supply pipe network to be connected, some pre-buried air supply ducts are parallel in main air supply pipeline, institute State some branch's air supply pipelines of end furcations of main air supply pipeline, each branch's air supply pipeline with rig intake stack It is connected, the rig intake stack is connected with the air inlet of rig.
- 2. air compressor remote centralized plenum system according to claim 1, it is characterised in that：It is described to concentrate high blast Supply station is arranged on outside mine or power station Excavation blasting safe range or farther region, and the region is provided with electric power output Equipment.
- 3. air compressor remote centralized plenum system according to claim 1, it is characterised in that：Each described electronic The exhaust end of air compressor machine installs rearmounted cooling system, independent pipeline on the rearmounted cooling system, before electric compressor The rearmounted cooling system of Valve controlling put opens and closes.
- 4. air compressor remote centralized plenum system according to claim 1, it is characterised in that：The main ajutage Road, pre-buried air supply duct and branch's air supply pipeline use DN150 carbon steel pipe materials, and the rig intake stack uses high pressure soft Property pressurize airduct.
- 5. air compressor remote centralized plenum system according to claim 1, it is characterised in that：Each rig enters Band valve distribution pipe is mounted on wind pipeline, is connected with valve distribution pipe with the air intake interface of rig.
- 6. air compressor remote centralized plenum system according to claim 1, it is characterised in that：The main air supply pipeline One-time laying sets several mouths of giving a dinner for a visitor from afar on Permanent Slope packway in the range of a kilometer radius, and the main air supply pipeline exists It can not change pipe in the ladder section of side slope packway.
- 7. a kind of electric compressor unit linkage energy-saving control method, it is characterised in that methods described comprises the steps：S1, obtain the pressure measuring value that client needs to use tolerance supply side pressure force snesor；S2, according to the pressure measuring value compared with the pressure threshold for defaulting in PLC；S3, the power output according to the comparative result adjustment electric compressor unit, control the electric compressor machine The start quantity of group.
- 8. electric compressor unit linkage energy-saving control method according to claim 7, it is characterised in that in step S3 In, in addition to：S31：When the pressure measuring value is less than the minimum value of the pressure threshold, increase the electric compressor unit Start quantity；S32：When the pressure measuring value is more than the maximum of the pressure threshold, reduce opening for the electric compressor unit Machine quantity.
- 9. more air compressors linkage energy-saving control method according to claim 7, it is characterised in that：When described in increase Followed during the start quantity of electric compressor unit and first stop first starting shooting, the principle started shooting after rear stopping；It is described electronic when reducing During the start quantity of air compressor machine unit, it then follows first start shooting and first stop, the principle stopped after rear start.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710924636.9A CN107575369A (en) | 2017-09-30 | 2017-09-30 | Air compressor remote centralized plenum system and its energy-saving control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710924636.9A CN107575369A (en) | 2017-09-30 | 2017-09-30 | Air compressor remote centralized plenum system and its energy-saving control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107575369A true CN107575369A (en) | 2018-01-12 |
Family
ID=61038996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710924636.9A Pending CN107575369A (en) | 2017-09-30 | 2017-09-30 | Air compressor remote centralized plenum system and its energy-saving control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107575369A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5337779A (en) * | 1990-05-23 | 1994-08-16 | Kabushiki Kaisha Fukuhara Seisakusho | Automatic drain device |
| CN103306958A (en) * | 2013-06-25 | 2013-09-18 | 四川巨伦科技开发有限公司 | Running Method method of running of intelligent power-saving control system of air compression station |
| CN104820413A (en) * | 2015-04-01 | 2015-08-05 | 宁波杭州湾新区祥源动力供应有限公司 | Energy-saving cluster control system and method of air compression station house |
| CN105020953A (en) * | 2015-06-12 | 2015-11-04 | 珠海格力电器股份有限公司 | Control method of compressor unit |
| CN105467843A (en) * | 2015-12-28 | 2016-04-06 | 广东芬尼克兹节能设备有限公司 | Automatic cycle startup and shutdown control method and device |
| US20160265530A1 (en) * | 2010-04-20 | 2016-09-15 | Sandvik Intellectual Property Ab | Air compressor system and method of operation |
| CN106286252A (en) * | 2016-09-13 | 2017-01-04 | 深圳市格瑞拓能源科技有限公司 | A kind of multiple stage air compressor linkage energy-saving control method and system |
| CN205965444U (en) * | 2016-08-25 | 2017-02-22 | 浙江城建煤气热电设计院有限公司 | Regional compressed air supply pipe -line system that concentrates |
-
2017
- 2017-09-30 CN CN201710924636.9A patent/CN107575369A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5337779A (en) * | 1990-05-23 | 1994-08-16 | Kabushiki Kaisha Fukuhara Seisakusho | Automatic drain device |
| US20160265530A1 (en) * | 2010-04-20 | 2016-09-15 | Sandvik Intellectual Property Ab | Air compressor system and method of operation |
| CN103306958A (en) * | 2013-06-25 | 2013-09-18 | 四川巨伦科技开发有限公司 | Running Method method of running of intelligent power-saving control system of air compression station |
| CN104820413A (en) * | 2015-04-01 | 2015-08-05 | 宁波杭州湾新区祥源动力供应有限公司 | Energy-saving cluster control system and method of air compression station house |
| CN105020953A (en) * | 2015-06-12 | 2015-11-04 | 珠海格力电器股份有限公司 | Control method of compressor unit |
| CN105467843A (en) * | 2015-12-28 | 2016-04-06 | 广东芬尼克兹节能设备有限公司 | Automatic cycle startup and shutdown control method and device |
| CN205965444U (en) * | 2016-08-25 | 2017-02-22 | 浙江城建煤气热电设计院有限公司 | Regional compressed air supply pipe -line system that concentrates |
| CN106286252A (en) * | 2016-09-13 | 2017-01-04 | 深圳市格瑞拓能源科技有限公司 | A kind of multiple stage air compressor linkage energy-saving control method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206113187U (en) | Wind energy direct drive ground source heat pump system | |
| CN103604131B (en) | Suspension type economizer ash-transmission system | |
| CN204082093U (en) | A kind of natural gas well head based on pressure energy generating and heat pump heats throttle system | |
| CN107575369A (en) | Air compressor remote centralized plenum system and its energy-saving control method | |
| CN104329760A (en) | System and method for comprehensive utilization of ground heat of mine water drainage | |
| CN207963630U (en) | A kind of floor heating pipeline cleaning machine | |
| CN207471843U (en) | For the Double-source heat pump system of heating crude oil | |
| CN202254034U (en) | Water air conditioner system for central cold and heat supply of high-rise building | |
| CN105066215A (en) | Boiler heating system and control method thereof | |
| CN203053089U (en) | Low-temperature heat energy recovering system of mine return air source | |
| CN206234064U (en) | A kind of cooling device for being applied to wind generating set engine room | |
| CN204757215U (en) | New air conditioning system | |
| CN204179683U (en) | Oil pumper wind power generation complementary power supply system | |
| CN210163939U (en) | Air discharge and intake system for pressure flow sewage pipeline in comprehensive pipe gallery | |
| CN109631371B (en) | System and method for realizing heating and refrigeration by using lake water | |
| CN209068806U (en) | A kind of earth source heat pump outside ground heat exchanger waterpower connects distribution structure with journey | |
| CN203785523U (en) | Tower charging pipeline flow combination and distribution structure for cooling towers with external water turbines | |
| CN209704757U (en) | Indoor environment artificial wind power generating system | |
| CN209260867U (en) | A kind of drainage inspection well whirl spraying device | |
| CN209131474U (en) | The cooling of pipe gallery cable and heat recovery system | |
| CN206398736U (en) | Draught fan impeller deashing device | |
| CN207422553U (en) | Total heat exchange core and Total heat exchange fresh air system | |
| CN208859752U (en) | A kind of device that architectural environment is adjusted using city piping lane air | |
| CN102121391A (en) | Construction method for ventilation in construction of small-radius spiral tunnel | |
| CN207555885U (en) | A kind of pipe gallery Moistureproof dehumidification ventilating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180112 |