CN206176509U - Pressure differential control two stage pump mixes water heating system - Google Patents
Pressure differential control two stage pump mixes water heating system Download PDFInfo
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- CN206176509U CN206176509U CN201621197650.0U CN201621197650U CN206176509U CN 206176509 U CN206176509 U CN 206176509U CN 201621197650 U CN201621197650 U CN 201621197650U CN 206176509 U CN206176509 U CN 206176509U
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Abstract
The utility model relates to a pressure differential control two stage pump mixes water heating system, including boiler, electrical system, it still includes one -level pipeline, second grade pipeline, coupling water mixing pipeline pipeline, the one -level pipeline passes through the pipeline by boiler with the one -level pump and establishes ties, diode route two stage pump passes through the pipeline with the heat exchanger and establishes ties, the second grade pipeline is two, connect in parallel from left to right in proper order in one -level pipeline, coupling water mixing pipeline, two diode ways, article two, the pipeline between the second grade is the outer net water pipe, the poor control frequency transforming cabinet of one -level pumping pressure is controlled by the pressure differential that the boiler always supplied water between pressure and the total return water pressure of boiler, guarantees that boiler moves under the rated flow. Two stage pump pressure differential control frequency transforming cabinet by each heat exchange station's heat exchanger once always supply water pressure and heat exchanger once always the pressure differential between the return water pressure control, it is uneven to solve water conservancy, the problem of heat and cold unevenness, the serious waste of the energy.
Description
Technical field
The utility model is related to a kind of mixed water heating system of pressure difference control two stage pump.
Background technology
Not only energy waste is serious for existing boiler heating system.And waterpower is uneven, is also to cause existing heat supply system
System major reason uneven in temperature, is the hard nut to crack for still perplexing heating industry so far, and the thermal waste that it is caused is general
It is 20~30%, up to 40~50% for having；The waste of energy for causing is generally 20~40%, and even as high as 50 for having~
70%.So needing badly, a kind of mixed water heating system of pressure difference control two stage pump is uneven to solve waterpower, the uneven in temperature, energy is tight
The problem for wasting again.
The content of the invention
The purpose of this utility model is to provide a kind of mixed water heating system of pressure difference control two stage pump to solve waterpower injustice
Weighing apparatus, uneven in temperature, energy serious waste problem.
The utility model uses following technical scheme：
A kind of mixed water heating system of pressure difference control two stage pump, it is characterised in that：Including one-level loop, secondary loop；It is described
It is connected in parallel between one-level loop, secondary loop, and a shared coupling in parallel therebetween mixes water pipe (14), the coupling
Mixed water pipe (14) is provided with valve (13)；
The one-level loop includes the primary pump (15), boiler blow-down water pipeline (17), hot-water boiler (1), boiler water supply
Pipeline (3) is sequentially connected in series, and the one-level loop also includes that primary pump pressure difference controls frequency conversion tank (2), the boiler water supply pipeline (3)
On be provided with pressure sensor one (4), be provided with pressure sensor two (16), the one-level on the boiler blow-down water pipeline (17)
Frequency converter one is provided with pump (15), primary pump pressure difference control frequency conversion tank (2) control pressure sensor one (4), pressure is passed
Sensor two (16), frequency converter one；
The secondary loop includes multiple heat exchange station (9), outer net water supply line (7), outer net return pipings (12) in parallel
And two stage pump (5), the heat exchange station (9) be connected in series with the two stage pump (5) after by the outer net water supply line (7), outer
Net return piping (12) parallel connection outer net, pressure sensing is provided with the pipeline between the two stage pump (5) and the heat exchange station (9)
The pressure sensor four (11) that the exit of device three (8) and the heat exchange station (9) is set, is provided with the two stage pump (5)
Frequency converter two, pressure difference controls frequency conversion tank (6) to control the sensor three (8), sensor four (11), frequency converter two.
The feed water inlet of the hot-water boiler (1) connects with the water inlet end of the boiler water supply pipeline (3), the hot-water boiler
(1) water return outlet is connected with one end of the boiler blow-down water pipeline (17), the other end of the boiler blow-down water pipeline (17) and institute
State the delivery port connection of primary pump (15)；
The heat exchange station (9) is provided with hot journey import, the outlet of hot journey, the delivery port of the two stage pump (5) and the heat exchange
Stand (9) hot journey import by pipeline communication,
The two ends of the mixed water pipe (14) of coupling are connected in parallel on the water side and described of the boiler water supply pipeline (3) respectively
Between the water inlet of level pump (15),
The two stage pump (5) water inlet of the heat exchange station (9) is connected to the boiler water supply pipeline (3) and goes out by pipeline
The mouth of a river and the intersection for coupling mixed water pipe (14), the hot journey outlet of the heat exchange station (9) are connected to described one by pipeline
Level pump (15) water inlet and the intersection for coupling mixed water pipe (14).
The hot-water boiler (1) is multiple parallel with one another, and the heat exchange station (9) is mutual simultaneously for many heat exchangers (10)
Connection；The primary pump (15), two stage pump (5) are multiple in parallel.
The valve (13) is gate valve or butterfly valve.
The heat exchanger (10) is plate type heat exchanger.
Advantage of the present utility model is as follows：
On the basis of normal heat supply is ensured, circulation pump frequency conversion is controlled by pressure difference, make the mixed water heating system of two stage pump true
Just reaching the effect of energy-saving and emission-reduction.Primary pump pressure difference controls frequency conversion tank by between the total pressure of supply water of boiler and the total pressure of return water of boiler
Pressure difference be controlled, it is ensured that hot-water boiler runs under metered flow.Two stage pump pressure difference controls frequency conversion tank by each heat exchange station
Once the pressure difference of total pressure of supply water and heat exchanger once between total pressure of return water is controlled heat exchanger, it is ensured that needed for the heat exchange station
Water-carrying capacity.Reduce heating system power consumption；Improve hot-water boiler safety in utilization and practicality；By the mixed water of coupling
Pipe solves the flow mismatch problem of one-level loop and secondary loop；By pressure difference control solve cause because robbing water be
System oscillation problem.
Brief description of the drawings：
Fig. 1 is the mixed water heating system attachment structure schematic diagram of the utility model；
Specific embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
It is clear explanation the utility model example that following examples are only, and not to implementation of the present utility model
The restriction of mode.For those of ordinary skill in the field, other can also be made not on the basis of the following description
With the change or variation of form, and these belong to the utility model obvious change for being drawn of spirit or change still in
Among protection domain of the present utility model.
A kind of mixed water heating system of pressure difference control two stage pump, it is characterised in that：Including one-level loop, secondary loop；It is described
It is connected in parallel between one-level loop, secondary loop, and a shared coupling in parallel therebetween mixes water pipe 14, the coupling is mixed
Water pipe 14 is provided with valve 13；
The one-level loop include the primary pump 15, boiler blow-down water pipeline 17, hot-water boiler 1, boiler water supply pipeline 3 according to
Secondary series connection, the one-level loop also includes that primary pump pressure difference controls frequency conversion tank 2, and pressure is provided with the boiler water supply pipeline 3
Sensor 1, is provided with pressure sensor 2 16 on the boiler blow-down water pipeline 17, frequency converter is provided with the primary pump 15
One, the primary pump pressure difference control frequency conversion tank 2 control pressure sensor 1, pressure sensor 2 16, frequency converter one；
The secondary loop includes multiple heat exchange stations 9 in parallel, outer net water supply line 7, outer net return piping 12 and two grades
Pump 5, the heat exchange station 9 passes through the outer net water supply line 7, outer net return piping 12 simultaneously after being connected in series with the two stage pump 5
Connection outer net, is provided with pressure sensor 38 and the heat exchange station 9 on the pipeline between the two stage pump 5 and the heat exchange station 9
The pressure sensor 4 11 that sets of exit, be provided with frequency converter two on the two stage pump 5, pressure difference control frequency conversion tank 6 is controlled
The sensor 38, sensor 4 11, frequency converter two.
The feed water inlet of the hot-water boiler 1 connects with the water inlet end of the boiler water supply pipeline 3, the hot-water boiler 1
Water return outlet is connected with one end of the boiler blow-down water pipeline 17, the other end and the primary pump 15 of the boiler blow-down water pipeline 17
Delivery port connection；
The heat exchange station 9 is provided with hot journey import, the outlet of hot journey, the delivery port of the two stage pump 5 and the heat exchange station 9
Hot journey import passes through pipeline communication,
The two ends of the mixed water pipe 14 of coupling are connected in parallel on the water side of the boiler water supply pipeline 3 and the primary pump respectively
Between 15 water inlet,
The water inlet of the two stage pump 5 of the heat exchange station 9 by pipeline be connected to the delivery port of boiler water supply pipeline 3 with
The intersection of the mixed water pipe 14 of coupling, the hot journey outlet of the heat exchange station 9 is connected to the primary pump 15 and intakes by pipeline
Mouth and the intersection for coupling mixed water pipe 14.
The hot-water boiler 1 is multiple parallel with one another, and the heat exchange station 9 is that many heat exchangers 10 are parallel with one another；It is described
Primary pump 15, two stage pump 5 are multiple in parallel.
The valve 13 is gate valve or butterfly valve.
The heat exchanger 10 is plate type heat exchanger.
Outer net water supply line 7, outer net return piping 12 are the heating pipeline of user.
Its principle and operation control method
As shown in figure 1, primary pump pressure difference controls frequency conversion tank by between the total pressure of supply water of boiler and the total pressure of return water of boiler
Pressure difference is controlled, it is ensured that hot-water boiler runs under metered flow；Two stage pump pressure difference controls frequency conversion tank changing by each heat exchange station
Once the pressure difference of total pressure of supply water and heat exchanger once between total pressure of return water is controlled hot device, it is ensured that one needed for the heat exchange station
Secondary water-carrying capacity.
Hot-water boiler is opened number of units and is determined by outdoor climate conditions.
Pressure sensor 1 measures the total pressure of supply water of pressure value respectively boiler with pressure sensor 2 16 and boiler is always returned
Water pressure, numerical signal is delivered in electric-control system；The difference of both is that boiler supplies backwater pressure difference, general gas and hot water pot
The pressure difference of stove is usually set to 4~6m (being scaled 0.04 to 0.06 MPa), and coal-fired hot-water boiler its pressure difference is usually set to 8~
12m (is scaled 0.08 to 0.12 MPa)；Due to its pressure differential and the relation of resistance to water-flow, it is equivalent to and has also concurrently set boiler
Resistance to water-flow, and the resistance coefficient of every boiler is constant, therefore can ensure that hot-water boiler 1 runs under metered flow；Heat
When the operation number of units of homogeneous solution-type reactor 1 increases, primary pump 15 can automatically increase running frequency, and one-level looped cycle water-carrying capacity can increase therewith
Plus, conversely, when the operation number of units of hot-water boiler 1 is reduced, primary pump 15 can automatically reduce running frequency, one-level looped cycle water-carrying capacity
Can reduce therewith.
Pressure measured by the heat exchanger pressure sensor 38 on diode road is once total pressure of supply water and pressure sensor
Once total pressure of return water is delivered to electric-control system to 3 11 heat exchangers for measuring；The pressure difference of plate type heat exchanger is usually set to 1~3m；
Heat exchanger is for after backwater pressure differential resetting, that is, setting the resistance to water-flow of heat exchanger, and the resistance coefficient of every heat exchanger is constant
, therefore a water-carrying capacity needed for the heat exchange station can be ensured；When flow of other heat exchange stations increases, secondary loop supervisor's resistance meeting
Increase, the two stage pump 5 of the heat exchange station can automatically increase running frequency, it is ensured that a water-carrying capacity is constant needed for the heat exchange station, conversely,
When flow of other heat exchange stations is reduced, secondary loop supervisor's resistance can be reduced, and the two stage pump 5 of the heat exchange station can automatically reduce fortune
Line frequency a, it is ensured that water-carrying capacity is constant needed for the heat exchange station.
Common gate valve 13 is set on the mixed water pipe 14 of coupling, common gate valve 13 is in connected state during operation.The mixed water pipe 14 of coupling
Water (flow) direction determined by the flow of one-level loop and secondary loop, one-level loop traffic be more than secondary loop flow, then by supplying
Water pipe flows to return pipe；One-level loop traffic is less than secondary loop flow, then flow to feed pipe by return pipe；One-level loop traffic
Equal to secondary loop flow, then the water transfixion in mixed water pipe 14 is coupled.
The mixed moisture cloth pump variable frequency technology of two stage pump.Compared with valve throttle hydraulic equilibrium regulation technology, it is characterized in：
With pump for valve, carry out " buffet ".Primary pump (main circulation pump), is responsible for the water circulation inside boiler room master station, and its flow is pot
The metered flow of stove, its lift is boiler body and corresponding pipeline and valve resistance sum, is typically mounted at boiler room
In master station.Two stage pump (point circulating pump), is responsible for the water circulation of primary side in an outer net and heat exchange station, and its flow is each heat exchange station
A required water-carrying capacity, its lift is an outer net resistance between a collateral resistance and our station and boiler room (or thermal source) in heat exchange station
Power sum, is typically mounted in each heat exchange station.Mixed water is exactly that primary pump, two stage pump are attached for backwater by mixed water pipe, mixes water
Pipe is the pressurization point that the system is once netted, and be may be generally disposed in boiler room master station.Distributed frequency conversion, i.e. primary pump, two stage pump
Operation is controlled by frequency converter.
Meanwhile, recirculating pump control method determines the success or failure of the mixed moisture cloth pump variable frequency technology of two stage pump.Scientific and reasonable
Control method can realize the final purpose of energy-saving and emission-reduction；Conversely, as control method is unreasonable, heating system can be made because robbing water and
Cause acutely vibration, can not only increase the energy consumption of original system, or even can also influence the normal operation of heating system.
Claims (5)
1. a kind of pressure difference control two stage pump mixes water heating system, it is characterised in that：Including one-level loop, secondary loop；Described one
It is connected in parallel between level loop, secondary loop, and a shared coupling in parallel therebetween mixes water pipe (14), the coupling is mixed
Water pipe (14) is provided with valve (13)；
The one-level loop includes the primary pump (15), boiler blow-down water pipeline (17), hot-water boiler (1), boiler water supply pipeline
(3) it is sequentially connected in series, the one-level loop also includes that primary pump pressure difference controls frequency conversion tank (2), sets on the boiler water supply pipeline (3)
Pressure sensor one (4) is equipped with, pressure sensor two (16), the primary pump are provided with the boiler blow-down water pipeline (17)
(15) frequency converter one is provided with, the primary pump pressure difference controls frequency conversion tank (2) control pressure sensor one (4), pressure sensing
Device two (16), frequency converter one；
The secondary loop includes multiple heat exchange station (9), outer net water supply line (7), outer net return pipings (12) and two in parallel
Level pump (5), the heat exchange station (9) is returned after being connected in series with the two stage pump (5) by the outer net water supply line (7), outer net
Water pipeline (12) parallel connection outer net, pressure sensor three is provided with the pipeline between the two stage pump (5) and the heat exchange station (9)
(8) and the heat exchange station (9) exit set pressure sensor four (11), be provided with frequency conversion on the two stage pump (5)
Device two, pressure difference controls frequency conversion tank (6) to control the sensor three (8), sensor four (11), frequency converter two.
2. a kind of pressure difference control two stage pump according to claim 1 mixes water heating system, it is characterised in that：The water bath
The feed water inlet of stove (1) connects with the water inlet end of the boiler water supply pipeline (3), the water return outlet of the hot-water boiler (1) with it is described
One end connection of boiler blow-down water pipeline (17), the other end of the boiler blow-down water pipeline (17) and the water outlet of the primary pump (15)
Mouth connection；
The heat exchange station (9) is provided with hot journey import, the outlet of hot journey, the delivery port of the two stage pump (5) and the heat exchange station (9)
Hot journey import by pipeline communication,
The two ends of the mixed water pipe (14) of coupling are connected in parallel on the water side of the boiler water supply pipeline (3) and the primary pump respectively
(15) between water inlet,
The two stage pump (5) water inlet of the heat exchange station (9) is connected to boiler water supply pipeline (3) delivery port by pipeline
With the intersection for coupling mixed water pipe (14), the hot journey outlet of the heat exchange station (9) is connected to the primary pump by pipeline
(15) water inlet and the intersection for coupling mixed water pipe (14).
3. a kind of pressure difference control two stage pump according to claim 1 mixes water heating system, it is characterised in that：The water bath
Stove (1) is multiple parallel with one another, and the heat exchange station (9) is parallel with one another for many heat exchangers (10)；The primary pump (15), two
Level pump (5) is multiple in parallel.
4. a kind of pressure difference control two stage pump according to claim 1 mixes water heating system, it is characterised in that：The valve
(13) it is gate valve or butterfly valve.
5. a kind of pressure difference control two stage pump according to claim 1 mixes water heating system, it is characterised in that：The heat exchanger
(10) it is plate type heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621197650.0U CN206176509U (en) | 2016-11-04 | 2016-11-04 | Pressure differential control two stage pump mixes water heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621197650.0U CN206176509U (en) | 2016-11-04 | 2016-11-04 | Pressure differential control two stage pump mixes water heating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206176509U true CN206176509U (en) | 2017-05-17 |
Family
ID=58681435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621197650.0U Active CN206176509U (en) | 2016-11-04 | 2016-11-04 | Pressure differential control two stage pump mixes water heating system |
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| Country | Link |
|---|---|
| CN (1) | CN206176509U (en) |
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2016
- 2016-11-04 CN CN201621197650.0U patent/CN206176509U/en active Active
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