CN105422457B - Oil free screw air compressor machine recuperation of heat gradient utilization system and control method - Google Patents
Oil free screw air compressor machine recuperation of heat gradient utilization system and control method Download PDFInfo
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- CN105422457B CN105422457B CN201510867706.2A CN201510867706A CN105422457B CN 105422457 B CN105422457 B CN 105422457B CN 201510867706 A CN201510867706 A CN 201510867706A CN 105422457 B CN105422457 B CN 105422457B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a kind of oil free screw air compressor machine recuperation of heat gradient utilization system, it is characterised in that including cooling device of air compressor, hot water cascade utilization device and water softening device；Wherein, cooling device of air compressor mainly includes two compression main frames and two guarantee heat exchangers and water pump, is connected between manufacture hot water's cascade utilization device and cooling device of air compressor by pipe network；Connected between water softening device and hot water cascade utilization device and cooling device of air compressor by pipeline.Waste heat recovery can be carried out to oil free screw air compressor machine, the hot water needed, and cascade utilization has been carried out to hot water.The invention also discloses its control method, by carrying out the regulation of system with regimen condition so as to adequately and reasonably using the hot water of recovery, reach and realize efficient utilization to the heat of recovery according to different.
Description
Technical field
The invention belongs to air compressor heat recovery technology field, and in particular to a kind of oil free screw air compressor machine recuperation of heat ladder
Level utilizes system.The invention further relates to the control method of the oil free screw air compressor machine recuperation of heat gradient utilization system.
Background technology
With the growing tension of the energy, power saving has turned into the focus of current global concern.In active development new energy
While, it also should increasingly pay attention to reclaiming and utilizing residual heat resources.Show according to a statistics of U.S. department of energy, compressor operating
When the electric energy that consumes in, be really used to increasing only account for total power consumption the 15% of air potential energy, and remaining most of (about 85%)
Electric energy be converted to heat.These heats are discharged into air generally by air-cooled or water cooling mode, are caused
The significant wastage of the energy.
One Main way of compressed air system energy-conservation is exactly the waste heat recovery of air compressor machine.Thus, utilize some methods
Waste Heat Recovery caused by air compressor machine is utilized with equipment, to obtain the hot water of required different temperatures, to the heat of different temperatures
Water is rationally utilized, and can both be recovered energy to greatest extent, reduces energy consumption, saves most of cost for enterprise, and can subtracts
Few environment used heat pollution.
Some correlative studys are there has also been for residual heat of air compressor recovery at present, and for oil free screw air compressor machine recuperation of heat
Study it is relatively fewer, but in oil free screw heat recovery system for air compressor reclaim hot water reasonable research on utilization be even more very
It is micro-.
The content of the invention
, can be to oil free screw it is an object of the invention to provide a kind of oil free screw air compressor machine recuperation of heat gradient utilization system
Air compressor machine has carried out waste heat recovery, the hot water needed, and has carried out cascade utilization to hot water.
The technical solution adopted in the present invention is a kind of oil free screw air compressor machine recuperation of heat gradient utilization system, its feature
It is, including cooling device of air compressor, hot water cascade utilization device and water softening device；Wherein, cooling device of air compressor is main
Including two compression main frames and two guarantee heat exchangers and water pump, between hot water cascade utilization device and cooling device of air compressor
Connected by pipe network；Connected between water softening device and hot water cascade utilization device and cooling device of air compressor by pipeline.
The features of the present invention also resides in,
The structure of cooling device of air compressor, including the first compression main frame and the second compression main frame, the first compression main frame pass through
First breather pipe is connected with the first guarantee heat exchanger, and the second compression main frame ensures that heat exchanger connects by the second breather pipe and second
Connect, be respectively arranged with the first air compressor machine outlet pipe and the first air compressor machine water inlet pipe on the first compression main frame, second compresses on main frame
The second air compressor machine outlet pipe and the second air compressor machine water inlet pipe are respectively arranged with, being provided with the first guarantee on the first guarantee heat exchanger changes
Hot device outlet pipe and first ensure heat exchanger water inlet pipe, second guarantee heat exchanger on be provided with the second guarantee heat exchanger outlet pipe and
Second ensures heat exchanger water inlet pipe；First ensure heat exchanger outlet pipe and second ensure heat exchanger outlet pipe with heat exchanger water outlet
Pipe connects, and the first air compressor machine water inlet pipe, the second air compressor machine water inlet pipe, first ensure that heat exchanger water inlet pipe and second ensures heat exchanger
Water inlet pipe is connected with main water inlet tube；First air compressor machine outlet pipe and the second air compressor machine outlet pipe connect with air compressor machine total outlet pipe
Connect；Heat exchanger outlet pipe is connected with air compressor machine total outlet pipe, and valve D is provided with junction.
Hot water cascade utilization device passes through pipe network and cooling device of air compressor including four plate type heat exchangers, plate type heat exchangers
And high-temperature-hot-water end connects with Low Temperature Thermal water end (W.E.).Four heat exchangers are the first plate type heat exchanger, the second plate type heat exchanger, respectively
Three-plate type heat exchanger, the 4th plate type heat exchanger, wherein, the first plate type heat exchanger, the second plate type heat exchanger pass through pipeline and high temperature
Hot water is connected with focus, and three-plate type heat exchanger and the 4th plate type heat exchanger are connected by pipeline with low-temperature water heating with focus；The
One plate type heat exchanger is connected by the second temperature end heat exchanging water pipe with air compressor machine total outlet pipe, and the second plate type heat exchanger passes through the 5th
Temperature end heat exchanging water pipe is connected with air compressor machine total outlet pipe；Three-plate type heat exchanger passes through the second low-temperature end heat exchanging water pipe and pneumatics
Machine total outlet pipe is connected, and the 4th plate type heat exchanger is connected by the 5th low-temperature end heat exchanging water pipe with air compressor machine total outlet pipe.
First plate type heat exchanger is provided with the first temperature end heat exchanging water pipe with hot junction；Second temperature end heat exchanging water pipe and second
Plate type heat exchanger connects, and is connected with the first temperature end heat exchanging water pipe, the 4th temperature end heat exchanging water pipe and the second plate type heat exchanger
Connect, the 6th temperature end heat exchanging water pipe, the 4th temperature end heat exchanging water pipe and the 6th high temperature are additionally provided with the first plate type heat exchanger
Heat exchanging water pipe's connection is held, for being passed through hot water of the water of lower temperature into plate type heat exchanger with being sent out in air compressor machine total outlet pipe
Heat exchange is carried out, so as to ensure the water temperature of the high temperature water end (W.E.).
Both 5th temperature end heat exchanging water pipe and second temperature end heat exchanging water pipe are connected；It is located in air compressor machine total outlet pipe
Valve A is provided between second temperature end heat exchanging water pipe and the 5th temperature end heat exchanging water pipe.
Set in air compressor machine total outlet pipe between the 5th temperature end heat exchanging water pipe and the second low-temperature end heat exchanging water pipe
There is the valve B for being connected to heat exchanger outlet pipe and air compressor machine total outlet pipe；The first low-temperature end is provided with three-plate type heat exchanger
Heat exchanging water pipe, is provided with the 4th low-temperature end heat exchanging water pipe on the 4th plate type heat exchanger, the first low-temperature end heat exchanging water pipe and the 3rd low
Warm end heat exchanging water pipe connection, the EXIT POINT at end is used as low-temperature water heating, the 6th low-temperature end heat exchanging water pipe and the 4th low-temperature end are changed
Hot-water line is connected, and the water inlet end at end is used as low-temperature water heating, low temperature is delivered into three-plate type heat exchanger with the cold water of water end (W.E.)
With the 4th plate type heat exchanger, become the low-temperature water heating that can use from the first low-temperature end heat-exchanging water after completing heat exchange wherein
Flow out in pipe and the 3rd low-temperature end heat exchanging water pipe, used for user.
Also it is interconnected between second low-temperature end heat exchanging water pipe and the 5th low-temperature end heat exchanging water pipe, in air compressor machine total outlet pipe
The upper position between the 5th low-temperature end heat exchanging water pipe and the second low-temperature end heat exchanging water pipe is provided with valve C.
The end of air compressor machine total outlet pipe is passed through shell-and-tube heat exchanger, in air compressor machine total outlet pipe close to shell-and-tube heat exchanger
Position be provided with valve E, return pipe, one end of return pipe and shell-and-tube heat exchanger are additionally provided with air compressor machine total outlet pipe
Connection, the other end are located at the tie point and heat exchanger outlet pipe and pneumatics of the 5th low-temperature end heat exchanging water pipe and air compressor machine total outlet pipe
Position between the tie point of machine total outlet pipe.
Return pipe is connected by water storage box water inlet pipe with water storage box, and water storage box is also associated with main water inlet tube, and water storage box passes through
Softened water water inlet pipe is connected with water softening device, and shell-and-tube heat exchanger is connected by cooling tower outlet pipe with cooling tower, is existed in addition
Cooling tower water inlet pipe is additionally provided between cooling tower and shell-and-tube heat exchanger, valve is provided with cooling tower water inlet pipe.
It is a further object of the present invention to provide the control method of the oil free screw air compressor machine recuperation of heat cascade utilization system.
Another technical scheme of the present invention is a kind of controlling party of oil free screw air compressor machine recuperation of heat gradient utilization system
Method, based on above-mentioned air compressor machine recuperation of heat gradient utilization system, specifically follow the steps below：
Step 1, system initialization, start air compressor machine recuperation of heat gradient utilization system, open valve, valve A, valve C, valve
Door D, valve E, by running water by obtaining softened water after water softening device, then are passed through in water storage box by softened water water inlet pipe,
Softened water is from water storage box by being passed through cooling device of air compressor after main water inlet tube；
Specifically, softened water respectively enters the second compression main frame and the first compression main frame by pipeline, passes through pipeline point
Not Jin Ru second ensure heat exchanger and first ensure heat exchanger in, the valve for being now in full-gear has：Valve, valve A, valve
Door C, valve D, valve E, now hot water cascade utilization device and not enabled, after the softened water for cooling absorbs heat, pass through
Outlet conduit is compressed in main frame from the first compression main frame second is collected to air compressor machine total outlet pipe after discharge, then passes through back of pipeline
Into shell-and-tube heat exchanger subsequently into cooling tower；
Ensure that the softened water of heat exchanger converges after being discharged from the first guarantee heat exchanger and the second guarantee heat exchanger for cooling down
Collection enters in cooling tower into heat exchanger outlet pipe after being then return in shell-and-tube heat exchanger；Water after cooled is passing through
Pipeline enters row in shell-and-tube heat exchanger and returned in water storage box, hence into circulating next time；
Step 2, hot water cascade utilization device is opened, valve A and valve C is closed, the hot water in air compressor machine total outlet pipe
Exchanged heat, changed into the water that the first plate type heat exchanger and the second plate type heat exchanger are passed through with through the second temperature end heat exchanging water pipe
Complete hot hot water enters air compressor machine total outlet pipe through the 5th temperature end heat exchanging water pipe, then enters by the second low-temperature end heat exchanging water pipe
The water being passed through in three-plate type heat exchanger and the 4th plate type heat exchanger with is exchanged heat, and has changed hot hot water through the 5th low-temperature end
Heat exchanging water pipe enters air compressor machine total outlet pipe；
Step 3, the adjustment of valve is carried out according to different operating modes so as to more realize the control of recycling system：
When the low-temperature water heating temperature in heat exchanger outlet pipe disclosure satisfy that three-plate type heat exchanger and the 4th plate-type heat-exchange
When being required with coolant-temperature gage of device, valve D, Open valve B are closed, the low-temperature water heating in heat exchanger outlet pipe is always gone out with air compressor machine
Enter three-plate type heat exchanger and the 4th plate-type heat-exchange by the second low-temperature end heat exchanging water pipe after high-temperature-hot-water mixing in water pipe
Device is exchanged heat；
When the low-temperature water heating temperature in heat exchanger outlet pipe, it is impossible to meet three-plate type heat exchanger and the 4th plate-type heat-exchange
When being required with coolant-temperature gage of device, valve B, Open valve D are closed, the low-temperature water heating in heat exchanger outlet pipe always goes out into air compressor machine
Water pipe.
When water temperature requires less than or equal to the inflow temperature of water storage box in air compressor machine total outlet pipe, valve E is closed, is opened
Valve F, the hot water in air compressor machine total outlet pipe is set directly to enter water storage box by return pipe and water storage box water inlet pipe；
When water temperature requires higher than the inflow temperature of water storage box in air compressor machine total outlet pipe, Open valve E, valve F is closed,
Water in air compressor machine total outlet pipe through water storage box water inlet pipe enters water storage box after being cooled down into shell-and-tube heat exchanger.
As Open valve E, the size of the opening of the lower water temperature valve in water storage box water inlet pipe, enter water storage box
Water temperature in water pipe is slightly below the inflow temperature of water storage box；
When the softened water in water storage box is less than setting value, the softened water water inlet pipe of softened water made from water softening device enters
Enter water storage box, reach moisturizing setting value.
The invention has the advantages that the present invention has carried out recuperation of heat transformation to oil free screw air compressor machine first, in oil-free
In screw air compressor inner cooling system, intercooler and aftercooler are using in parallel so that and cooling water leaving water temperature is higher,
It is easier to be recycled, has not only saved the energy, avoids the waste of resource, and efficient profit is realized to the heat of recovery
With improving the economic benefit of enterprise.
Brief description of the drawings
Fig. 1 is the structural representation of the oil free screw air compressor machine recuperation of heat gradient utilization system of the present invention.
In figure, 1. first compression main frames, 2. second compression main frames, 3. first ensure heat exchanger, and 4. second ensure heat exchanger,
5. the first plate type heat exchanger, 6. second plate type heat exchangers, 7. three-plate type heat exchangers, 8. the 4th plate type heat exchangers, 9. shell-and-tubes
Heat exchanger, 10. valves, 11. cooling towers, 12. water softening devices, 13. water storage boxes, 14. water pumps, 15. valve A, 16. valve B,
17. valve C, 18. valve D, 19. valve E, the 20. first air compressor machine outlet pipe of valve F, 1-1., the water inlet of the air compressor machines of 1-2. first
Pipe, the breather pipes of 1-3. first, 2-1. the second air compressor machine outlet pipes, 2-2. the second air compressor machine water inlet pipes, the breather pipes of 2-3. second, 3-
1. first ensures heat exchanger outlet pipe, 3-2. first ensures heat exchanger water inlet pipe, and 4-1. second ensures heat exchanger outlet pipe, 4-2.
Second guarantee heat exchanger water inlet pipe, 21. main water inlet tubes, 22. air compressor machine total outlet pipes, 23. heat exchanger outlet pipes, 5-1. first are high
Warm end heat exchanging water pipe, 5-2 the second temperature end heat exchanging water pipes, 5-3. third high temperatures end heat exchanging water pipe, the heat exchange of the temperature ends of 6-1. the 4th
Water pipe, the temperature end heat exchanging water pipes of 6-2. the 5th, the temperature end heat exchanging water pipes of 6-3. the 6th, 7-1. the first low-temperature end heat exchanging water pipes, 7-
2. the second low-temperature end heat exchanging water pipe, the low-temperature end heat exchanging water pipes of 7-3. the 3rd, the low-temperature end heat exchanging water pipes of 8-1. the 4th, 8-2. the 5th are low
Warm end heat exchanging water pipe, the low-temperature end heat exchanging water pipes of 8-3. the 6th, 9-1. return pipes, 9-2. cooling tower water inlet pipes, 9-3. cooling towers go out
Water pipe, 13-1. water storage box water inlet pipes, 13-2. softened water water inlet pipes.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
A kind of oil free screw air compressor machine recuperation of heat gradient utilization system, including cooling device of air compressor, hot water cascade utilization
Device, water softening device.
Wherein, cooling device of air compressor mainly includes two compression main frames and two guarantee heat exchangers and water pump, to sky
Press group plays cooling effect, in the presence of water circulation system, transmits energy.Hot water cascade utilization device cools down with air compressor machine
Connected between device by pipe network.In the presence of water pump, cooling water is carried out to two compression main frames and two guarantee heat exchangers
Cooling, by cooling down Water transport energy.
Connected between water softening device and hot water cascade utilization device and cooling device of air compressor by pipeline.
Meanwhile in cooling device of air compressor after cooling water cools down to air-compressor set, obtained hot water is also hot water ladder
Level utilizes the hot water source of device, and hot water enters hot water cascade utilization device, transfers heat to the water system with hot junction.In heat
Water cascade is utilized in device, and hot water is exchanged heat according to the demand of different heat supply point temperature into different heat exchangers, realizes energy
The conversion of amount.
Wherein, the structure of cooling device of air compressor, as shown in figure 1, main frame 2 is compressed including the first compression main frame 1 and second,
First compression main frame 1 is connected by the first breather pipe 1-3 with the first guarantee heat exchanger 3, and the second compression main frame 2 passes through the second ventilation
Pipe 2-3 is connected with the second guarantee heat exchanger 4,
The first air compressor machine outlet pipe 1-1 and the first air compressor machine water inlet pipe 1-2 are respectively arranged with first compression main frame 1, the
The second air compressor machine outlet pipe 2-1 and the second air compressor machine water inlet pipe 2-2 are respectively arranged with two compression main frames 2,
The first guarantee heat exchanger outlet pipe 3-1 and first, which is provided with, on first guarantee heat exchanger 3 ensures heat exchanger water inlet pipe
3-2,
The second guarantee heat exchanger outlet pipe 4-1 and second, which is provided with, on second guarantee heat exchanger 4 ensures heat exchanger water inlet pipe
4-2；
First air compressor machine water inlet pipe 1-2, the second air compressor machine water inlet pipe 2-2, first ensure heat exchanger water inlet pipe 3-2 and second
Ensure that heat exchanger water inlet pipe 4-2 is connected with main water inlet tube 21；
First air compressor machine outlet pipe 1-1 and the second air compressor machine outlet pipe 2-1 are connected with air compressor machine total outlet pipe 22；
First guarantee heat exchanger outlet pipe 3-1 and the second guarantee heat exchanger outlet pipe 4-1 connect with heat exchanger outlet pipe 23
Connect,
Heat exchanger outlet pipe 23 is connected with air compressor machine total outlet pipe 22, and valve D18 is provided with junction,
Hot water cascade utilization device passes through pipe network and cooling device of air compressor including four plate type heat exchangers, plate type heat exchangers
And high-temperature-hot-water end connects with Low Temperature Thermal water end (W.E.).Four heat exchangers be respectively the first plate type heat exchanger 5, the second plate type heat exchanger 6,
Three-plate type heat exchanger 7, the 4th plate type heat exchanger 8, wherein, the first plate type heat exchanger 5, the second plate type heat exchanger 6 pass through pipeline
It is connected with high-temperature-hot-water with focus, the plate type heat exchanger 8 of three-plate type heat exchanger 7 and the 4th passes through pipeline and low-temperature water heating focus
Connection；
First plate type heat exchanger 5 is connected by the second temperature end heat exchanging water pipe 5-2 with air compressor machine total outlet pipe 22, the second plate
Formula heat exchanger 6 is connected by the 5th temperature end heat exchanging water pipe 6-2 with air compressor machine total outlet pipe 22,
Both 5th temperature end heat exchanging water pipe 6-2 and second temperature end heat exchanging water pipe 5-2 are connected, and are heat supply end；
It is located at the second temperature end heat exchanging water pipe 5-2 and the 5th temperature end heat exchanging water pipe 6-2 in air compressor machine total outlet pipe 22
Between be provided with valve A15；
In air compressor machine total outlet pipe 22 positioned at the 5th temperature end heat exchanging water pipe 6-2 and the second low-temperature end heat-exchanging water 7-2 it
Between be provided with the valve B16 for being connected to heat exchanger outlet pipe 23 and air compressor machine total outlet pipe 22；
First plate type heat exchanger 5 is provided with the first temperature end heat exchanging water pipe 5-1 with hot junction；Third high temperature end heat exchanging water pipe 5-
3 connect with the second plate type heat exchanger 6, and are connected with the first temperature end heat exchanging water pipe 5-1, the 4th temperature end heat exchanging water pipe 6-1 with
Second plate type heat exchanger 6 is connected, and the 6th temperature end heat exchanging water pipe 6-3, the 4th temperature end are additionally provided with the first plate type heat exchanger 5
Heat exchanging water pipe 6-1 and the 6th temperature end heat exchanging water pipe 6-3 connections, for be passed through the water of lower temperature into plate type heat exchanger with sky
The hot water sent out in press total outlet pipe carries out heat exchange, so as to ensure the water temperature of the high temperature water end (W.E.).
Three-plate type heat exchanger 7, the 4th plate type heat exchanger 8 and connect their pipe network and collectively form low-temperature water heating and utilize portion
Point, three-plate type heat exchanger 7 is connected by the second low-temperature end heat exchanging water pipe 7-2 and air compressor machine total outlet pipe 22, and the 4th board-like changes
Hot device 8 is connected by the 5th low-temperature end heat exchanging water pipe 8-2 with air compressor machine total outlet pipe 22, the second low-temperature end heat exchanging water pipe 7-2 and
Also it is interconnected between 5th low-temperature end heat exchanging water pipe 8-2, the 5th low-temperature end heat-exchanging water is located in air compressor machine total outlet pipe 22
Position between pipe 8-2 and the second low-temperature end heat exchanging water pipe 7-2 is provided with valve C17,
The first low-temperature end heat exchanging water pipe 7-1 is provided with three-plate type heat exchanger 7, is provided with the 4th plate type heat exchanger 8
4th low-temperature end heat exchanging water pipe 8-1, the first low-temperature end heat exchanging water pipe 7-1 and the 3rd low-temperature end heat exchanging water pipe 7-3 is connected, as low
Warm water uses the EXIT POINT at end, the 6th low-temperature end heat exchanging water pipe 8-3 and the 4th low-temperature end heat exchanging water pipe 8-1 connections, as low
Warm water uses the water inlet end at end, and low temperature is delivered into three-plate type heat exchanger and the 4th plate type heat exchanger with the cold water of water end (W.E.),
Become the low-temperature water heating that can use from the first low-temperature end heat exchanging water pipe 7-1 and the 3rd low-temperature end after completing heat exchange wherein
Flow out in heat exchanging water pipe 7-3, used for user.
The end of air compressor machine total outlet pipe 22 is passed through shell-and-tube heat exchanger 9, in air compressor machine total outlet pipe 22 close to shell-and-tube
The position of heat exchanger 9 is provided with valve E19,
In addition, being additionally provided with return pipe 9-1 in air compressor machine total outlet pipe 22, return pipe 9-1 one end and shell-and-tube change
Hot device 9 connects, and the other end is located at the 5th low-temperature end heat exchanging water pipe 8-2 and the tie point and heat exchanger of air compressor machine total outlet pipe 22 go out
Position between water pipe 23 and the tie point of air compressor machine total outlet pipe 22.
Return pipe 9-1 is connected by water storage box water inlet pipe 13-1 with water storage box 13, and water storage box 13 is also associated with main water inlet tube
21, water storage box is connected by softened water water inlet pipe 13-2 with water softening device,
Shell-and-tube heat exchanger 9 is connected by cooling tower outlet pipe 9-3 with cooling tower 11, in addition in cooling tower 11 and shell-and-tube
Cooling tower water inlet pipe 9-2 is additionally provided between heat exchanger 9, valve 10 is provided with cooling tower water inlet pipe 9-2.
A kind of control method of oil free screw air compressor machine recuperation of heat gradient utilization system of the present invention, it is characterised in that be based on
Above-mentioned air compressor machine recuperation of heat gradient utilization system, is specifically followed the steps below：
Step 1, system initialization, start air compressor machine recuperation of heat gradient utilization system, open valve 10, valve A15, valve
C17, valve D18, valve E19, by running water by obtaining softened water after water softening device 12, then led to by softened water water inlet pipe
Enter in water storage box 13, softened water is from water storage box 13 by being passed through cooling device of air compressor after main water inlet tube 21；
Specifically, softened water respectively enters the second compression main frame 2 and the first compression main frame 1 by pipeline, passes through pipeline
Respectively enter the second guarantee heat exchanger 4 and first and ensure in heat exchanger 3 that the valve for being now in full-gear has：Valve 10, valve
Door A15, valve C17, valve D18, valve E19, now hot water cascade utilization device and not enabled, the softened water for cooling are inhaled
After receiving heat, compressed by outlet conduit from the first compression main frame 1 second in main frame 2 and be collected to air compressor machine total outlet pipe after discharge
22, then returned to by pipeline in shell-and-tube heat exchanger 9 subsequently into cooling tower 11；
Ensure that the softened water of heat exchanger ensures that heat exchanger 3 and second is ensured in heat exchanger 4 after discharge from first for cooling down
It is collected in heat exchanger outlet pipe 23, enters after being then return in shell-and-tube heat exchanger 9 in cooling tower 11.
Water after cooled is being returned in water storage box 13 by 9-2 pipelines into row in shell-and-tube heat exchanger 9, hence into
Circulate next time.
Step 2, hot water cascade utilization device is opened, valve A15 and valve C17 is closed, in air compressor machine total outlet pipe 22
Hot water enter the first plate type heat exchanger 5 and the second plate type heat exchanger 6 and the 6th temperature end through the second temperature end heat exchanging water pipe 5-2
The water being passed through in heat exchanging water pipe 6-3 is exchanged heat, and it is total into air compressor machine through the 5th temperature end heat exchanging water pipe 6-2 to have changed hot hot water
Outlet pipe 22, then by the second low-temperature end heat exchanging water pipe 7-2 enter the plate type heat exchanger 8 of three-plate type heat exchanger 7 and the 4th in
The water being passed through in 6th low-temperature end heat exchanging water pipe 8-3 is exchanged heat, and has been changed hot hot water and has been entered through the 5th low-temperature end heat exchanging water pipe 8-2
Enter air compressor machine total outlet pipe 22；
Step 3, the adjustment of valve is carried out according to different operating modes so as to more realize the control of recycling system：
When the low-temperature water heating temperature in heat exchanger outlet pipe 23 is changed disclosure satisfy that three-plate type heat exchanger 7 and the 4th is board-like
When being required with coolant-temperature gage of hot device 8, close valve D18, Open valve B16, make low-temperature water heating in heat exchanger outlet pipe 23 with
Enter three-plate type heat exchanger by the second low-temperature end heat exchanging water pipe 7-2 after high-temperature-hot-water mixing in air compressor machine total outlet pipe 22
7 and the 4th plate type heat exchanger 8 exchanged heat；
When the low-temperature water heating temperature in heat exchanger outlet pipe 23 is changed it is impossible to meet three-plate type heat exchanger 7 and the 4th is board-like
When being required with coolant-temperature gage of hot device 8, valve B16, Open valve D18 are closed, the low-temperature water heating in heat exchanger outlet pipe 23 enters
Air compressor machine total outlet pipe 22.
When water temperature requires less than or equal to the inflow temperature of water storage box 13 in air compressor machine total outlet pipe 22, valve is closed
E19, Open valve F20, the hot water in air compressor machine total outlet pipe 22 is set directly to be entered by return pipe 9-1 and water storage box water inlet pipe 13-1
Enter water storage box 13；
When water temperature requires higher than the inflow temperature of water storage box 13 in air compressor machine total outlet pipe 22, Open valve E19, close
Valve F20, the water in air compressor machine total outlet pipe 22 cooled down into shell-and-tube heat exchanger 9 after through water storage box water inlet pipe
13-1 enters water storage box 13.
As Open valve E19, the size of the opening of the lower water temperature valve 10 in water storage box water inlet pipe 13-1, make
Water temperature in water storage box water inlet pipe 13-1 is slightly below the inflow temperature of water storage box 13；
When the softened water in water storage box 13 is less than setting value, the softened water water inlet of softened water made from water softening device 12
Pipe 13-2 enters water storage box 13, reaches moisturizing setting value.
Softened water in water storage box 13 enters in main water inlet tube 21 in the presence of water pump 14 to be used for system.
Claims (8)
1. a kind of oil free screw air compressor machine recuperation of heat gradient utilization system, it is characterised in that including cooling device of air compressor, hot water
Cascade utilization device and water softening device；Wherein, cooling device of air compressor mainly includes two compression main frames and two guarantees are changed
Hot device and water pump, are connected between described hot water cascade utilization device and cooling device of air compressor by pipe network；Described is soft
Connected between water desalting plant and hot water cascade utilization device and cooling device of air compressor by pipeline；Described hot water cascade utilization
Device include four plate type heat exchangers, described plate type heat exchanger by pipe network and cooling device of air compressor and high-temperature-hot-water end and
Low Temperature Thermal water end (W.E.) connects；Four described plate type heat exchangers be respectively the first plate type heat exchanger (5), the second plate type heat exchanger (6),
Three-plate type heat exchanger (7), the 4th plate type heat exchanger (8), wherein, the first plate type heat exchanger (5), the second plate type heat exchanger (6)
It is connected by pipeline with high-temperature-hot-water with focus, described three-plate type heat exchanger (7) and the 4th plate type heat exchanger (8) pass through pipe
Road is connected with low-temperature water heating with focus；Described the first plate type heat exchanger (5) passes through the second temperature end heat exchanging water pipe (5-2) and sky
Press total outlet pipe (22) connects, and described the second plate type heat exchanger (6) passes through the 5th temperature end heat exchanging water pipe (6-2) and pneumatics
Machine total outlet pipe (22) connects；Described three-plate type heat exchanger (7) passes through the second low-temperature end heat exchanging water pipe (7-2) and air compressor machine
Total outlet pipe (22) connects, and the 4th described plate type heat exchanger (8) is total by the 5th low-temperature end heat exchanging water pipe (8-2) and air compressor machine
Outlet pipe (22) connects；Both 5th temperature end heat exchanging water pipe 6-2 and second temperature end heat exchanging water pipe 5-2 are connected, and are heat supply end；
It is located at the 5th temperature end heat exchanging water pipe (6-2) and the second low-temperature end heat-exchanging water in described air compressor machine total outlet pipe (22)
The valve B (16) for being connected to heat exchanger outlet pipe (23) and air compressor machine total outlet pipe (22) is provided between pipe (7-2)；Described
The first low-temperature end heat exchanging water pipe (7-1) is provided with three-plate type heat exchanger (7), is set on the 4th described plate type heat exchanger (8)
It is equipped with the 4th low-temperature end heat exchanging water pipe (8-1), the first described low-temperature end heat exchanging water pipe (7-1) and the 3rd low-temperature end heat exchanging water pipe
(7-3) is connected, and the EXIT POINT at end, the 6th low-temperature end heat exchanging water pipe (8-3) and the heat exchange of the 4th low-temperature end are used as low-temperature water heating
Water pipe (8-1) is connected, and the water inlet end at end is used as low-temperature water heating, and low temperature is delivered into three-plate type with the cold water of water end (W.E.) exchanges heat
Device and the 4th plate type heat exchanger, the low-temperature water heating for completing to become to use after heat exchange wherein exchange heat from the first low-temperature end
Flow out in water pipe (7-1) and the 3rd low-temperature end heat exchanging water pipe (7-3), used for user.
2. oil free screw air compressor machine recuperation of heat gradient utilization system according to claim 1, it is characterised in that described sky
The structure of press cooling device, including the first compression main frame (1) and the second compression main frame (2), the described first compression main frame (1)
It is connected by the first breather pipe (1-3) with the first guarantee heat exchanger (3), the described second compression main frame (2) passes through the second ventilation
Pipe (2-3) is connected with the second guarantee heat exchanger (4),
The first air compressor machine outlet pipe (1-1) and the first air compressor machine water inlet pipe are respectively arranged with the first described compression main frame (1)
(1-2), the second air compressor machine outlet pipe (2-1) is respectively arranged with the described second compression main frame (2) and the second air compressor machine is intake
Manage (2-2),
The first guarantee heat exchanger outlet pipe (3-1) and first, which is provided with, on the first described guarantee heat exchanger (3) ensures heat exchanger
Water inlet pipe (3-2), described second ensures that the second guarantee heat exchanger outlet pipe (4-1) and second is provided with heat exchanger (4) to be protected
Hinder heat exchanger water inlet pipe (4-2)；Described first ensures that heat exchanger outlet pipe (3-1) and second ensures heat exchanger outlet pipe (4-
1) it is connected with heat exchanger outlet pipe (23),
Described the first air compressor machine water inlet pipe (1-2), the second air compressor machine water inlet pipe (2-2), first ensure heat exchanger water inlet pipe (3-
2) it is connected with the second guarantee heat exchanger water inlet pipe (4-2) with main water inlet tube (21)；The first described air compressor machine outlet pipe (1-1)
It is connected with the second air compressor machine outlet pipe (2-1) with air compressor machine total outlet pipe (22)；
Described heat exchanger outlet pipe (23) is connected with air compressor machine total outlet pipe (22), and valve D (18) is provided with junction.
3. oil free screw air compressor machine recuperation of heat gradient utilization system according to claim 1, it is characterised in that described
One plate type heat exchanger (5) is provided with the first temperature end heat exchanging water pipe (5-1) with hot junction；Third high temperature end heat exchanging water pipe (5-3) with
Second plate type heat exchanger (6) connects, and is connected with the first temperature end heat exchanging water pipe (5-1), the 4th described temperature end heat-exchanging water
Pipe (6-1) connects with the second plate type heat exchanger (6), and the first plate type heat exchanger is additionally provided with the 6th temperature end heat exchanging water pipe on (5)
(6-3), the 4th temperature end heat exchanging water pipe (6-1) connects with the 6th temperature end heat exchanging water pipe (6-3), for being passed through lower temperature
Water carries out heat exchange into plate type heat exchanger with the hot water sent out in air compressor machine total outlet pipe, so as to ensure the high temperature water end (W.E.)
Water temperature.
4. oil free screw air compressor machine recuperation of heat gradient utilization system according to claim 3, it is characterised in that described
Both five temperature end heat exchanging water pipes (6-2) and second temperature end heat exchanging water pipe (5-2) are connected；In described air compressor machine total outlet pipe
(22) valve A is provided between the second temperature end heat exchanging water pipe (5-2) and the 5th temperature end heat exchanging water pipe (6-2)
(15)。
5. oil free screw air compressor machine recuperation of heat gradient utilization system according to claim 1, it is characterised in that described
Also it is interconnected between two low-temperature end heat exchanging water pipes (7-2) and the 5th low-temperature end heat exchanging water pipe (8-2), in air compressor machine total outlet pipe
(22) position between the 5th low-temperature end heat exchanging water pipe (8-2) and the second low-temperature end heat exchanging water pipe (7-2) is provided with valve
Door C (17).
6. the oil free screw air compressor machine recuperation of heat gradient utilization system according to any one in Claims 1 to 5, its feature
It is, the end of described air compressor machine total outlet pipe (22) is passed through shell-and-tube heat exchanger (9), in described air compressor machine total outlet pipe
(22) position of shell-and-tube heat exchanger (9) is provided with valve E (19), be additionally provided with back in air compressor machine total outlet pipe (22)
Water pipe (9-1), one end of described return pipe (9-1) are connected with shell-and-tube heat exchanger (9), and the other end is located at the 5th low-temperature end and changed
Hot-water line (8-2) and the tie point and heat exchanger outlet pipe (23) and air compressor machine total outlet pipe (22) of air compressor machine total outlet pipe (22)
Tie point between position.
7. oil free screw air compressor machine recuperation of heat gradient utilization system according to claim 6, it is characterised in that described returns
Water pipe (9-1) is connected by water storage box water inlet pipe (13-1) with water storage box (13), and described water storage box (13) is also associated with master and entered
Water pipe (21), described water storage box are connected by softened water water inlet pipe (13-2) with water softening device, described pipe shell type heat exchange
Device (9) is connected by cooling tower outlet pipe (9-3) with cooling tower (11), in addition in cooling tower (11) and shell-and-tube heat exchanger (9)
Between be additionally provided with cooling tower water inlet pipe (9-2), valve (10) is provided with cooling tower water inlet pipe (9-2).
8. a kind of control method of oil free screw air compressor machine recuperation of heat gradient utilization system, it is characterised in that based on claim 1
Air compressor machine recuperation of heat gradient utilization system described in~7 any one, is specifically followed the steps below：
Step 1, system initialization, start air compressor machine recuperation of heat gradient utilization system, open valve (10), valve A (15), valve
C (17), valve D (18), valve E (19), by running water by obtaining softened water after water softening device (12), then pass through softened water
Water inlet pipe is passed through in water storage box (13), and softened water is from water storage box (13) by being passed through air compressor machine cooling dress after main water inlet tube (21)
Put；
Specifically, described softened water respectively enters the second compression main frame (2) and the first compression main frame (1) by pipeline, leads to
Piping respectively enters the second guarantee heat exchanger (4) and first and ensured in heat exchanger (3), is now in the valve of full-gear
Have：Valve (10), valve A (15), valve C (17), valve D (18), valve E (19), now hot water cascade utilization device is not
Enable, after the softened water for cooling absorbs heat, main frame (2) is compressed from the first compression main frame (1) second by outlet conduit
Air compressor machine total outlet pipe (22) is collected to after middle discharge, is then returned to by pipeline in shell-and-tube heat exchanger (9) subsequently into cold
But in tower (11)；
After ensureing that the softened water of heat exchanger is discharged from the first guarantee heat exchanger (3) and the second guarantee heat exchanger (4) for cooling down
It is collected in heat exchanger outlet pipe (23), enters after being then return in shell-and-tube heat exchanger (9) in cooling tower (11)；
Water after cooled is being returned in water storage box (13) by (9-2) pipeline into row in shell-and-tube heat exchanger (9), so as to enter
Enter and circulate next time；
Step 2, hot water cascade utilization device is opened, valve A (15) and valve C (17) is closed, air compressor machine total outlet pipe (22)
In hot water enter the first plate type heat exchanger (5) and the second plate type heat exchanger (6) and the through the second temperature end heat exchanging water pipe (5-2)
The water being passed through in six temperature end heat exchanging water pipes (6-3) is exchanged heat, and has changed hot hot water through the 5th temperature end heat exchanging water pipe (6-2)
Enter three-plate type heat exchanger (7) and the into air compressor machine total outlet pipe (22), then by the second low-temperature end heat exchanging water pipe (7-2)
Exchanged heat in four plate type heat exchangers (8) with the water being passed through in the 6th low-temperature end heat exchanging water pipe (8-3), changed hot hot water through
Five low-temperature end heat exchanging water pipes (8-2) enter air compressor machine total outlet pipe (22)；
Step 3, the adjustment of valve is carried out according to different operating modes so as to more realize the control of recycling system：
When the low-temperature water heating temperature in heat exchanger outlet pipe (23) disclosure satisfy that three-plate type heat exchanger (7) and the 4th board-like changes
When being required with coolant-temperature gage of hot device (8), valve D (18) is closed, Open valve B (16), is made low in heat exchanger outlet pipe (23)
Warm water by the second low-temperature end heat exchanging water pipe (7-2) enters the after being mixed with the high-temperature-hot-water in air compressor machine total outlet pipe (22)
Three-plate type heat exchanger (7) and the 4th plate type heat exchanger (8) are exchanged heat；
When the low-temperature water heating temperature in heat exchanger outlet pipe (23) is changed it is impossible to meet three-plate type heat exchanger (7) and the 4th are board-like
When being required with coolant-temperature gage of hot device (8), valve B (16), Open valve D (18) are closed, the low temperature in heat exchanger outlet pipe (23)
Hot water enters air compressor machine total outlet pipe (22)；
When water temperature requires less than or equal to the inflow temperature of water storage box (13) in air compressor machine total outlet pipe (22), valve E is closed
(19), Open valve F (20), the hot water in air compressor machine total outlet pipe (22) is made directly to be intake by return pipe (9-1) and water storage box
Pipe (13-1) enters water storage box (13)；
When water temperature requires higher than the inflow temperature of water storage box (13) in air compressor machine total outlet pipe (22), Open valve E (19), close
Valve closing door F (20), the water in air compressor machine total outlet pipe (22) cooled down into shell-and-tube heat exchanger (9) after through water storage box
Water inlet pipe (13-1) enters water storage box (13)；
When Open valve E (19), the size of the opening of the lower water temperature valve (10) in water storage box water inlet pipe (13-1),
The water temperature in water storage box water inlet pipe (13-1) is set to be slightly below the inflow temperature of water storage box (13)；
When the softened water in water storage box (13) is less than setting value, the softened water water inlet of softened water made from water softening device (12)
Pipe (13-2) enters water storage box (13), reaches moisturizing setting value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510867706.2A CN105422457B (en) | 2015-11-30 | 2015-11-30 | Oil free screw air compressor machine recuperation of heat gradient utilization system and control method |
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| CN201510867706.2A CN105422457B (en) | 2015-11-30 | 2015-11-30 | Oil free screw air compressor machine recuperation of heat gradient utilization system and control method |
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| CN108716765A (en) * | 2018-06-27 | 2018-10-30 | 阿特拉斯·科普柯(无锡)压缩机有限公司 | A kind of energy recycle device |
| CN109611383B (en) * | 2019-01-02 | 2020-12-15 | 浙江先博节能科技有限公司 | Centrifugal air compressor step waste heat recovery device |
| CN114777187A (en) * | 2020-05-26 | 2022-07-22 | 万众热工科技(广州)有限公司 | Heat energy recovery management system and recovery management method for centrifugal air compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797661A (en) * | 2012-08-03 | 2012-11-28 | 齐齐哈尔轨道交通装备有限责任公司 | Air compressor residual-heat utilization system and method |
| CN202718837U (en) * | 2012-07-25 | 2013-02-06 | 上海安悦节能技术有限公司 | Waste heat recovery and gradient utilization device of air compressor |
| CN203051144U (en) * | 2012-12-21 | 2013-07-10 | 洛阳蓝海实业有限公司 | Energy-saving device for recycling waste heat of air compressor |
| CN203685588U (en) * | 2014-01-27 | 2014-07-02 | 上海瑞晨环保科技有限公司 | Waste heat recovery device of oil-free screw air compressor |
| CN205423171U (en) * | 2015-11-30 | 2016-08-03 | 西安工程大学 | There is not oily screw compressor heat recovery cascade utilization system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5632700B2 (en) * | 2010-10-19 | 2014-11-26 | 三浦工業株式会社 | Heat recovery system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202718837U (en) * | 2012-07-25 | 2013-02-06 | 上海安悦节能技术有限公司 | Waste heat recovery and gradient utilization device of air compressor |
| CN102797661A (en) * | 2012-08-03 | 2012-11-28 | 齐齐哈尔轨道交通装备有限责任公司 | Air compressor residual-heat utilization system and method |
| CN203051144U (en) * | 2012-12-21 | 2013-07-10 | 洛阳蓝海实业有限公司 | Energy-saving device for recycling waste heat of air compressor |
| CN203685588U (en) * | 2014-01-27 | 2014-07-02 | 上海瑞晨环保科技有限公司 | Waste heat recovery device of oil-free screw air compressor |
| CN205423171U (en) * | 2015-11-30 | 2016-08-03 | 西安工程大学 | There is not oily screw compressor heat recovery cascade utilization system |
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