CN105091264A - Pressure balance regulating system and method and air conditioning unit having system - Google Patents
Pressure balance regulating system and method and air conditioning unit having system Download PDFInfo
- Publication number
- CN105091264A CN105091264A CN201510566700.1A CN201510566700A CN105091264A CN 105091264 A CN105091264 A CN 105091264A CN 201510566700 A CN201510566700 A CN 201510566700A CN 105091264 A CN105091264 A CN 105091264A
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- pipeline
- pressure balance
- target
- pressure
- regulating
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
Abstract
The invention provides a pressure balance regulating system. The pressure balance regulating system comprises an inlet end (1), an outlet end (2) and a target regulating pipeline (3) located between the inlet end (1) and the outlet end (2). The pressure balance regulating system further comprises a bypass pipeline (4) connected with the target regulating pipeline (3) in parallel. The bypass pipeline (4) is provided with at least one bypass check valve (5), and a three-way regulating valve (6) is arranged at the intersection position of the bypass pipeline (4) and the target regulating pipeline (3). According to the regulating system, the constancy of pressure loss of the target regulating pipeline is achieved, pressure influences of the target regulating pipeline on the whole system are reduced to the minimum, pressure balance regulating is achieved, and stable pressure at the inlet end of the system is guaranteed. In addition, the opening degree of the three-way regulating valve and the flow of the target regulating pipeline are made to be in a linear relation, so that flow regulating is more stable. The invention further provides a pressure balance regulating method and an air conditioning unit having the regulating system.
Description
Technical field
The invention belongs to field of air conditioning, be specifically related to a kind of pressure balance regulating system, control method and there is the air-conditioner set of this system.
Background technology
Two-way or three-way control valve is mostly adopted to carry out regulating water flow in existing chilled water tail end air conditioner unit, but for adopting the system of two regulating valves, the crushing of unit self changes along with the aperture change of two-port valve, when two-port valve contract fully (namely the aperture of valve is adjusted to closed condition), the crushing of unit reaches maximum, make the hydraulic pressure of whole chilled water system pipe network very unstable like this, thus affect the water supply flow situation of other chilled water ends.
And in the system adopting triple valve, due on bypass line without any regulating the measure of crushing, the crushing in surface cooler stream and bypass flow path can be caused like this to differ greatly, triple valve is made to regulate aperture and surface cooler flow can not be linear, and the crushing of whole unit also can fluctuate within the specific limits, and then the hydraulic balance affecting whole chilled water system pipe network is stablized.
Therefore because the stability existed in above-mentioned existing system for self crushing cannot ensure, thus affect the pressure balanced defect of whole system, research and design of the present invention goes out a kind of pressure balance regulating system, control method and uses the air-conditioner set of this system.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is to overcome in prior art and cannot ensures for the stability of self crushing, thus affect the pressure balanced defect of whole system, thus a kind of new pressure balance regulating system, control method are provided and there is the air-conditioner set of this system.Further, this pressure balancing system can also improve the stability of Flow-rate adjustment.
A kind of pressure balance regulating system provided by the invention, comprise entrance point, the port of export and the target between described entrance point and the port of export and regulate pipeline, it also comprises the bypass line regulating pipeline to be in parallel with described target, described bypass line is provided with at least one bypass cutoff valve, and the position that described bypass line and described target regulate pipeline to intersect is provided with three-way control valve.
Preferably, described three-way control valve is arranged near port of export place and/or is arranged near entrance point place.
Preferably, described target regulates on pipeline and is connected with target conditioning equipment.
The present invention also provides a kind of pressure balance control method, and it utilizes aforesaid pressure balance regulating system to regulate pipeline to regulate to described target.
Preferably, described method comprises step: S1: adjustment import and export end pressure, to rated value, ensures that import and export end pressure is stablized constant;
Preferably, also comprise step: S2: three-way control valve is all adjusted to target and regulate pipeline direction, bypass line now flow is zero, records main pipe rail flow value Q this moment.
Preferably, also step is comprised: S3: three-way control valve is all adjusted to bypass line path direction after step S2, now target regulates piping flow to be zero, bypass cutoff valve on manual adjustment bypass line is to maximum opening, and then slowly turn down, make the flow value on main pipe rail equal Q, and record the angle value of now bypass cutoff valve rotation.
Preferably, keep the aperture of bypass cutoff valve constant, regulate the aperture of three-way control valve.
The present invention also provides a kind of air-conditioner set, and it comprises aforesaid pressure balance regulating system.
Preferably, described target regulates linking objective conditioning equipment on pipeline, and described target conditioning equipment is chilled water end unit.
Preferably, described entrance point access chilled water, the described port of export picks out chilled water.
Preferably, described chilled water end unit comprises surface cooler.
A kind of pressure balance regulating system provided by the invention has following beneficial effect:
1. according to pressure balance regulating system of the present invention, achieve target and regulate the crushing of pipeline constant, stabilize the crushing that target regulates pipeline, make target regulate the pressure influence of pipeline to whole system to drop to minimum, achieve the object that pressure balance regulates.
2. according to pressure balance regulating system of the present invention, ensure that system inlets end pressure is stablized, make three-way control valve aperture and target regulate between the flow of pipeline linear, be conducive to the control and regulation that target regulates pipeline self, make Flow-rate adjustment more stable.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of pressure balance regulating system of the present invention;
Fig. 2 is the structural representation with the air-conditioner set of this pressure balance regulating system of the present invention.
In figure, Reference numeral is expressed as:
1-entrance point, 2-port of export, 3-target regulates pipeline, 4-bypass line, 5-bypass cutoff valve, 6-three-way control valve, 7-target conditioning equipment, 8-chilled water end unit, 81-surface cooler.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 1, a kind of pressure balance regulating system provided by the invention, comprise entrance point 1, the port of export 2 and the target between described entrance point 1 and the port of export 2 and regulate pipeline 3, it also comprises the bypass line 4 regulating pipeline 3 to be in parallel with described target, described bypass line 4 is provided with at least one bypass cutoff valve 5, and the position that described bypass line 4 and described target regulate pipeline 3 to intersect is provided with three-way control valve 6.A bypass cutoff valve 5 is preferably set.
Pressure balance regulating system of the present invention, by arranging the bypass line 4 regulating pipeline 3 to be in parallel with described target, and at least one bypass cutoff valve 5 is provided with on described bypass line 4, and the three-way control valve 6 of at least 1 is provided with in the position that described bypass line 4 and described target regulate pipeline 3 to intersect, can effectively regulate the crushing of pipeline constant by realize target, stabilize the crushing that target regulates pipeline, make target regulate the pressure influence of pipeline to whole system to drop to minimum, achieve the object that pressure balance regulates.In addition, the stable of system inlets end pressure can also be ensured, make three-way control valve valve opening and target regulate between the flow of pipeline linear, be conducive to the control and regulation that target regulates pipeline self, make Flow-rate adjustment more stable.
Because by regulating bypass cutoff valve, make bypass line identical with targeted tube resistance, thus ensure that the force value of import 1 and outlet 2 is basicly stable, and inlet and outlet pressure does not change with the aperture change of three-way control valve, according to Bernoulli equation, when pressure stability, rate of flow of fluid is definite value too, so now, target regulate the flow of pipeline just only and triple valve aperture sectional area linear.
Preferably, described triple valve 6 is arranged near the port of export 2 place and/or is arranged near entrance point 1 place.Preferably, described three-way control valve 6 is 1, is arranged near the port of export 2 place; Preferably, described three-way control valve 6 is 1, is arranged near entrance point 1 place; Preferably, described three-way control valve 6 is 2, is all arranging 1 near entrance point 1 and the port of export 2.
Preferably, described target regulates on pipeline 3 and is connected with target conditioning equipment 7.The stable of the pressure of target conditioning equipment can be regulated by pressure balance regulating system, stablize the crushing of this target conditioning equipment, make the Flow-rate adjustment for target conditioning equipment meet linearisation, more stable.
Present invention also offers a kind of pressure balance control method, it utilizes aforesaid pressure balance regulating system to regulate pipeline 3 to regulate to described target.Can effectively regulate the crushing of pipeline constant by realize target, stabilize the crushing that target regulates pipeline, make target regulate the pressure influence of pipeline to whole system to drop to minimum, achieve the object that pressure balance regulates.In addition, the stable of system inlets end pressure can also be ensured, make three-way control valve valve opening and target regulate between the flow of pipeline linear, be conducive to the control and regulation that target regulates pipeline self, make Flow-rate adjustment more stable.
Preferably, described pressure balance control method comprises step: S1: adjustment import and export end 1,2 pressure, to rated value, ensures that import and export end 1,2 pressure stability is constant; The pressure remained steady into and out of this system effectively can be ensured, for pressure balanced adjustment provides a stable precondition by this step.
Pressure nominal value is directly related with the size of pipeline, in circuit design, generally all can guaranteed flow value meet the demands, and under same pressure reduction (namely same crushing), pipeline bore is larger, and flow is larger.If therefore system flow value has been decided, so pipeline bore is larger, and inlet outlet pressure differential just can be less; The less required pressure reduction of pipeline bore is larger.If outlet pressures is definite value, just can think that pipeline bore is larger, inlet pressure just can be less; Pipeline bore is less, and inlet pressure needs larger.
In addition, inlet and outlet pressure absolute value also needs the ability of the bearing pressure considering system pipeline accessory, and general inlet pressure needs control at below 1MPa safer.
Preferably, also comprise step: S2: three-way control valve 6 is all adjusted to target and regulate pipeline 3 direction, bypass line 4 now flow is zero, records main pipe rail flow value Q this moment.Fluid can be measured exactly by this step all to flow through target and regulate flow number in pipeline 3.
Preferably, after step S2, also comprise step: S3: three-way control valve 6 is all adjusted to bypass line 4 path direction, now target regulates pipeline 3 flow to be zero, can record flow number when fluid all flows through bypass line 4 exactly.And then bypass cutoff valve 5 to the maximum opening manually adjusted on bypass line 4, and then slowly turn down, make the flow value on main pipe rail equal Q, and record the angle value of now bypass cutoff valve 5 rotation.Can think that the corresponding crushing of this angle value of described bypass cutoff valve 5 flows through target with whole fluid and regulates crushing during pipeline 3 identical by this step, make the total flow of whole system be in a more stable value, thus crushing is stablized.
Preferably, keep the aperture of bypass cutoff valve 5 constant, regulate the aperture of three-way control valve 6.When the aperture of described bypass cutoff valve 5 is constant, no matter what kind of aperture three-way control valve 6 is in, when inlet pressure is stable, the bulk flow of whole system is all a more stable value, therefore the crushing of whole system relatively also can be more stable, pipeline 3 will be regulated to impact because of the regulating working conditions of unit to target.
As shown in Figure 2, present invention also offers a kind of air-conditioner set, it comprises aforesaid pressure balance regulating system, and described target adjustment pipeline 3 is connected with target conditioning equipment 7, described target conditioning equipment 7 is chilled water end unit 8, described entrance point 1 accesses chilled water, and the described port of export 2 picks out chilled water.Inlet pipeline is divided into two-way and enters chilled water end unit 8 and bypass line 4 respectively, finally converges outflow system at threeway water adjusting valve 6 place.By this pressure balance regulating system, pressure balance adjustment is carried out to chilled water end unit 8, effectively can stablize the crushing of this unit 8, make Flow-rate adjustment more stable.
Preferably, as shown in Figure 2, described chilled water end unit comprises surface cooler 81.Surface cooler, also referred to as surface-cooler, is used for playing the object of the cold-producing medium of HTHP being carried out to heat-absorbing action.The difference of surface cooler and condenser be surface cooler produce absorb heat, the effect of heat release generally can not cause cold-producing medium to undergo phase transition.Surface cooler is generally divided into two kinds: serpentine coil type and cold wind type.The air conditioning water (chilled water) that the surface cooler of air-conditioner set is generally flowed by the inside is the Air flow of outer for flowing pipe heat exchange fin, cold air after cooling is delivered to field of employment cooling by blower fan, absorbed heat is taken back refrigeration unit from the water return pipeline of surface cooler by chilled water, be sent back to the air of surface cooler heat absorption, cool stream warp after releasing heat, cooling again, constantly circulate.
The present invention adopts three-way control valve 6 to regulate the discharge in chilled water end unit 8 in surface cooler 81, on bypass line, add bypass cutoff valve 5 for regulating the crushing of bypass line 4 simultaneously, make surface cooler 81 substantially identical with the crushing of bypass line 4, thus ensure three-way control valve 6 aperture and surface cooler 81 flow linear, no matter and the crushing fluctuation which kind of aperture unit entirety three-way control valve 6 is in is all very little, is conducive to whole chilled water pipeline system water pressure balanced and stablizes.
Wherein, the method for adjustment of bypass line 4 crushing of air conditioning water end unit 8 directly manually adjusts bypass cutoff valve 5 aperture to realize, and the concrete grammar step of adjustment comprises:
1. adjust end unit import and export 1,2 hydraulic pressure to rated value, ensure into and out of stable water pressure constant.
2. three-way control valve 6 is all adjusted to surface cooler 1 path direction, bypass line now discharge is zero, records main pipe rail water flow value Q this moment.
3. three-way control valve 6 is all adjusted to bypass line 4 path direction, now surface cooler 81 discharge is zero, bypass cutoff valve 5 to the maximum opening manually on adjustment bypass line 4, and then slowly turns down, and makes the water flow value on main pipe rail equal Q.And record the angle value of now bypass cutoff valve 5 rotation.
Now can think that the crushing of bypass line 4 is substantially identical with the crushing of surface cooler 81 stream, no matter which kind of aperture threeway water adjusting valve 6 is in, when import stable water pressure, the total water flow of whole unit is all a more stable value, therefore the crushing of whole unit relatively also can be more stable, thus can not impact chilled water system system because of the regulating working conditions of unit.
1. air-conditioner set of the present invention is stablized by the crushing achieving chilled water end unit in conjunction with threeway water adjusting valve and bypass cutoff valve.
2., because voltage loss is stablized, make Flow-rate adjustment more linearisation.
The crushing that air-conditioner set of the present invention achieves unit self is constant, the influence of hydraulic pressure of unit to whole chilled water system pipeline is made to be reduced to minimum, and ensure that pipeline water inlet pressure stability, three-way control valve valve opening and the linear change of surface cooler changes in flow rate, be conducive to the control and regulation of unit self.
Those skilled in the art will readily understand, under the prerequisite of not conflicting, above-mentioned each advantageous manner freely can combine, superpose.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (12)
1. a pressure balance regulating system, comprise entrance point (1), the port of export (2) and be positioned at target adjustment pipeline (3) between described entrance point (1) and the port of export (2), it is characterized in that: also comprise the bypass line (4) regulating pipeline (3) to be in parallel with described target, described bypass line (4) is provided with at least one bypass cutoff valve (5), and the position that described bypass line (4) and described target regulate pipeline (3) to intersect is provided with three-way control valve (6).
2. a kind of pressure balance regulating system according to claim 1, is characterized in that: described triple valve (6) is arranged near the port of export (2) place and/or is arranged near entrance point (1) place.
3. a kind of pressure balance regulating system according to claim 1 and 2, is characterized in that: described target regulates on pipeline (3) and is connected with target conditioning equipment (7).
4. a pressure balance control method, is characterized in that: utilize the described pressure balance regulating system of one of claim 1-3 to regulate pipeline (3) to regulate to described target.
5. a kind of pressure balance control method according to claim 4, is characterized in that comprising step:
S1: adjustment import and export end (1,2) pressure, to rated value, ensures that import and export end (1,2) pressure stability is constant.
6., according to a kind of pressure balance control method one of claim 4-5 Suo Shu, characterized by further comprising step:
S2: three-way control valve (6) is all adjusted to target and regulate pipeline (3) direction, bypass line (4) now flow is zero, records main pipe rail flow value Q this moment.
7. a kind of pressure balance control method according to claim 6, is characterized in that also comprising step after step S2:
S3: three-way control valve (6) is all adjusted to bypass line (4) path direction, now target regulates pipeline (3) flow to be zero, bypass cutoff valve (5) on manual adjustment bypass line (4) is to maximum opening, and then slowly turn down, make the flow value on main pipe rail equal Q, and record the angle value that now bypass cutoff valve (5) rotates.
8. a kind of pressure balance control method according to claim 7, is characterized in that: keep the aperture of bypass cutoff valve (5) constant, regulate the aperture of three-way control valve (6).
9. an air-conditioner set, is characterized in that: comprise the pressure balance regulating system any one of claim 1-3.
10. a kind of air-conditioner set according to claim 9, it is characterized in that: described target regulates the upper linking objective conditioning equipment (7) of pipeline (3), and described target conditioning equipment (7) is chilled water end unit (8).
11. a kind of air-conditioner set according to claim 10, is characterized in that: described entrance point (1) access chilled water, the described port of export (2) picks out chilled water.
12. a kind of air-conditioner set according to claim 10 or 11, is characterized in that: described chilled water end unit comprises surface cooler (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510566700.1A CN105091264B (en) | 2015-09-07 | 2015-09-07 | Pressure balance regulating system, adjusting method and the air-conditioner set with the system |
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| CN201510566700.1A CN105091264B (en) | 2015-09-07 | 2015-09-07 | Pressure balance regulating system, adjusting method and the air-conditioner set with the system |
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| CN105091264B CN105091264B (en) | 2018-09-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107469655A (en) * | 2017-08-23 | 2017-12-15 | 江苏新美星包装机械股份有限公司 | A kind of liquid mixed method |
| CN108413530A (en) * | 2018-03-06 | 2018-08-17 | 福建工程学院 | A kind of water temperature regulation device and its control method for air-conditioner water system |
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| CN205037505U (en) * | 2015-09-07 | 2016-02-17 | 珠海格力电器股份有限公司 | Pressure balance governing system and air conditioning unit who has this system |
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| CN108413530A (en) * | 2018-03-06 | 2018-08-17 | 福建工程学院 | A kind of water temperature regulation device and its control method for air-conditioner water system |
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|---|---|
| CN105091264B (en) | 2018-09-25 |
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