CN112902287B - Automatic hydraulic balance adjusting method, device, system, equipment and medium for heating system - Google Patents
Automatic hydraulic balance adjusting method, device, system, equipment and medium for heating system Download PDFInfo
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- CN112902287B CN112902287B CN202110104088.1A CN202110104088A CN112902287B CN 112902287 B CN112902287 B CN 112902287B CN 202110104088 A CN202110104088 A CN 202110104088A CN 112902287 B CN112902287 B CN 112902287B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
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- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
Abstract
The invention provides a method, a device, a system, equipment and a medium for automatically adjusting hydraulic balance of a heating system, wherein the method comprises the following steps: for each heating branch, controlling the flow regulating valve in the heating branch to be opened independently at a corresponding initial opening degree, and acquiring the water inlet and outlet pressure difference corresponding to the heating branch after the flow regulating valve in the heating branch is opened independently for a preset time; comparing the water inlet and outlet pressure differences corresponding to the plurality of heating branches; when the difference value between the water inlet and outlet pressure differences corresponding to the plurality of heating branches exceeds a preset range, adjusting the opening degree of the flow regulating valve in the corresponding heating branch according to the water inlet and outlet pressure differences corresponding to the plurality of heating branches; and after waiting for a preset waiting time, updating the initial opening of the flow regulating valve in the regulated heating branch into the regulated opening, and repeating the steps. The invention can realize the automatic adjustment of the hydraulic balance of each branch in the heating system.
Description
Technical Field
The invention relates to the technical field of room heating, in particular to a method, a device, a system, equipment and a medium for adjusting hydraulic balance self-supporting of a heating system.
Background
In a domestic heating system, it often happens that an individual room is not hot enough or an individual room is overheated, mainly because: the lengths of the ground heating pipes laid in the rooms are different, so that the hydraulic power of all branches of the system is unbalanced, the heating flow of the room with large pipe resistance is less, and the heating flow of the room with small pipe group is large. For such a situation, a professional staff member is often required to manually adjust the flow rate of each branch so as to adjust the flow rate of each branch uniformly.
In order to uniformly adjust the flow of each branch, the conventional adjusting method is as follows: the working personnel adjust the opening degree of each branch according to the room temperature after the primary stabilization, the opening degree of the branch corresponding to the room with low temperature is adjusted to be larger, and the opening degree of the branch corresponding to the room with high temperature is adjusted to be smaller; after waiting for a period of time, judging whether the adjustment has the effect according to the room temperature; if the primary adjustment is not accurate, the room temperature is not enough or the over-temperature condition still exists, the adjustment is carried out again after waiting for a period of time until the adjustment is balanced. In the process, as the temperature rise of the floor heating system is a very slow process, the adjustment effect can be judged only by waiting for a long time after the adjustment of a worker is finished, and the adjustment can only be performed directionally at each time, which basically belongs to blind adjustment, so that the conditions that the worker frequently goes to the door for debugging for many times and the room temperature is still unbalanced due to inaccurate debugging frequently occur in the actual operation.
At present, in order to help workers to intuitively know the flow conditions of all branches, float flowmeters are respectively arranged on all branches (generally, float flowmeters are arranged because the quality of heating water is poor and a common turbine flowmeter cannot be arranged). When the heating system is debugged, the staff adjusts the flow of each branch to be consistent according to the display value of the flow meter. However, the float flowmeter is high in cost, large in occupied volume and incapable of intelligent adjustment, and once a user closes a certain branch, the flow of other branches changes differently, which may cause the flow imbalance of each branch.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, an object of the present invention is to provide a method, an apparatus, a system, a device and a medium for automatically adjusting hydraulic balance of each branch in a heating system, so as to save a lot of time for debugging the heating system by workers, greatly improve the accuracy of debugging, and further improve the comfort of heating for users.
In order to achieve the above object, the present invention provides an automatic hydraulic balance adjustment method for a heating system, where the heating system includes a plurality of heating branches, each of the heating branches is provided with a flow control valve, and the method includes:
for each heating branch, controlling the flow regulating valve in the heating branch to be opened independently at a corresponding initial opening degree, and acquiring the water inlet and outlet pressure difference corresponding to the heating branch after the flow regulating valve in the heating branch is opened independently for a preset time;
comparing the water inlet and outlet pressure differences corresponding to the plurality of heating branches;
when the difference value between the water inlet and outlet pressure differences corresponding to the plurality of heating branches exceeds a preset range, adjusting the opening degree of the flow regulating valve in the corresponding heating branch according to the water inlet and outlet pressure differences corresponding to the plurality of heating branches;
after waiting for a preset waiting time, updating the initial opening of the flow regulating valve in the regulated heating branch into the regulated opening, and repeating the steps until the difference value between the water inlet pressure difference and the water outlet pressure difference corresponding to the plurality of heating branches falls into the preset range.
In a preferred embodiment of the present invention, after obtaining the water inlet and outlet pressure differences corresponding to all the heating branches, the method further includes:
and controlling the flow regulating valves in all the heating branches to regulate the corresponding initial opening.
In a preferred embodiment of the present invention, the adjusting the opening degree of the flow rate adjusting valve in the corresponding heating branch according to the water pressure difference between the inlet and the outlet corresponding to the plurality of heating branches includes:
and when the difference obtained by subtracting a first preset value from the water inlet and outlet pressure difference corresponding to one heating branch is larger than the water inlet and outlet pressure differences corresponding to the other heating branches, reducing the opening degree of flow regulating valves in the other heating branches according to a first preset rule.
In a preferred embodiment of the present invention, the adjusting the opening degree of the flow rate adjusting valve in the corresponding heating branch according to the water pressure difference between the inlet and the outlet corresponding to the plurality of heating branches includes:
and when the sum of the water inlet and outlet pressure difference corresponding to one heating branch and a second preset value is smaller than the water inlet and outlet pressure difference corresponding to the other heating branches, reducing the opening degree of the flow regulating valve in one heating branch according to a second preset rule.
In order to achieve the above object, the present invention further provides an automatic hydraulic balance adjustment device for a heating system, wherein the heating system comprises a plurality of heating branches, each heating branch is provided with a flow control valve, and the device comprises:
the inlet and outlet water pressure difference acquisition module is used for controlling the flow regulating valve in each heating branch to be opened independently at a corresponding initial opening degree for each heating branch, and acquiring the inlet and outlet water pressure difference corresponding to each heating branch after the flow regulating valve in each heating branch is opened independently for a preset time;
the comparison module is used for comparing the water inlet and outlet pressure differences corresponding to the plurality of heating branches;
the regulating module is used for regulating the opening degree of the flow regulating valve in the corresponding heating branch according to the water inlet and outlet pressure difference corresponding to the plurality of heating branches when the difference value between the water inlet and outlet pressure differences corresponding to the plurality of heating branches exceeds a preset range;
and the updating module is used for updating the initial opening of the flow regulating valve in the regulated heating branch into the regulated opening after waiting for a preset waiting time, and calling the inlet and outlet water pressure difference obtaining module again until the difference value between the inlet and outlet water pressure differences corresponding to the plurality of heating branches falls into the preset range.
In a preferred embodiment of the present invention, the water inlet and outlet pressure difference obtaining module is further configured to: and after the water inlet and outlet pressure differences corresponding to all the heating branches are obtained, controlling the flow regulating valves in all the heating branches to regulate the corresponding initial opening degrees.
In a preferred embodiment of the present invention, when a difference obtained by subtracting a first predetermined value from the water inlet and outlet pressure difference corresponding to one of the heating branches is greater than the water inlet and outlet pressure differences corresponding to the remaining heating branches, the adjusting module decreases the opening degrees of the flow rate adjusting valves in the remaining heating branches according to a first preset rule.
In a preferred embodiment of the present invention, when the sum of the water inlet and outlet pressure difference corresponding to one of the heating branches and a second predetermined value is less than the water inlet and outlet pressure difference corresponding to the other heating branches, the adjusting module decreases the opening degree of the flow adjusting valve in the one of the heating branches according to a second predetermined rule.
In order to achieve the above object, the present invention further provides an automatic water balance adjustment system, which includes a water separator, a water collector, a plurality of heating branches connected in parallel between the water separator and the water collector, a plurality of flow control valves disposed in the plurality of heating branches in a one-to-one correspondence manner, a plurality of stepping motors connected in a one-to-one correspondence manner with the plurality of flow control valves, and a control assembly connected to the plurality of stepping motors, wherein the automatic hydraulic balance adjustment device of the heating system is integrated in the control assembly.
In a preferred embodiment of the present invention, the heating system further includes:
the first pressure sensor is arranged at the water inlet end of the water separator, and the second pressure sensor is arranged at the water outlet end of the water collector;
when the flow regulating valve in a certain heating branch is independently opened, the pressure difference acquisition module acquires the water inlet and outlet pressure difference corresponding to the heating branch according to the pressure difference acquired by the first pressure sensor and the second pressure sensor.
In order to achieve the above object, the present invention also provides an electronic device, which comprises a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the aforementioned method when executing the computer program.
In order to achieve the above object, the present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the aforementioned method.
By adopting the technical scheme, the invention has the following beneficial effects:
firstly, aiming at each heating branch, controlling the flow regulating valve in the heating branch to be opened independently at a corresponding initial opening degree, and acquiring the water inlet and outlet pressure difference corresponding to the heating branch when the flow regulating valve in the heating branch is opened independently; and then when the difference value between the water inlet and outlet pressure differences corresponding to the heating branches exceeds a preset range, adjusting the opening degree of the flow regulating valve in the corresponding heating branch, updating the initial opening degree of the flow regulating valve in the corresponding heating branch into the adjusted opening degree after waiting for a preset waiting time, and repeatedly executing the steps until the difference value between the water inlet and outlet pressure differences corresponding to the heating branches falls into the preset range, so that the automatic adjustment of the hydraulic balance of each heating branch in the heating system can be realized, a large amount of time for debugging the heating system by workers is saved, the debugging accuracy can be greatly improved, the heating comfort of users is further improved, and meanwhile, the cost and the space are saved because a float flowmeter is not needed. In addition, when a certain heating branch is closed and not used, the method can be used for readjusting, and the flow of each heating branch is prevented from being unbalanced again.
Drawings
Fig. 1 is a schematic view of a heating system on which the present invention is based;
fig. 2 is a flowchart of a method for automatically adjusting hydraulic balance of a heating system according to embodiment 1 of the present invention;
fig. 3 is a block diagram of a hydraulic balance automatic adjusting device of a heating system in embodiment 3 of the present invention;
FIG. 4 is a block diagram of an electronic device according to embodiment 6 of the present invention
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Referring to fig. 1, a heating system based on the present invention includes a water separator 11, a water collector 12, a plurality of heating branches (4 heating branches are shown in fig. 1 and are L1-L4) connected in parallel between the water separator 11 and the water collector 12, a plurality of flow control valves (not shown) disposed in the plurality of heating branches L1-L4 in a one-to-one correspondence manner, a plurality of stepping motors 14 connected in a one-to-one correspondence manner with the plurality of flow control valves, a control assembly 15 connected to the plurality of stepping motors 14 through a wire harness, a plurality of thermostats 16 connected to the control assembly 15, and a heating stove 17 connected to a water inlet end of the water separator 11 and an output end of the water collector 12, wherein different heating branches L1-L4 and different thermostats 16 are disposed in different rooms, and the plurality of flow control valves are mounted on the water collector 12, respectively. In addition, as shown in fig. 1, the heating system based on the present invention further includes a first pressure sensor 18 disposed at the water inlet end of the water separator 11, and a second pressure sensor 19 disposed at the water outlet end of the water collector 12.
When the heating system works, high-temperature floor heating water supplied by the heating furnace 17 firstly enters the water separator 11, then is distributed to each room through each heating branch, and after the floor heating water exchanges heat with the room, the temperature of the floor heating water becomes low, then is collected to the water collector 12, and is circularly supplied to the water separator 11 again for distribution after being heated by the heating furnace 17. It should be understood that the areas of the rooms are different, the lengths of the heating pipelines to be laid in the rooms are different, a long pipeline is needed in a large room, and a short pipeline is needed in a small room. The longer the pipeline is, the larger the loss is, the heating flow in the long pipeline is small, and the condition that the room is not hot can be caused in the room heating process; similarly, when the length of the pipeline is small, the heating flow is too large due to small pipeline loss, and the room is overheated. Therefore, the hydraulic balance adjustment of the heating system is necessary,
example 1
The embodiment provides an automatic hydraulic balance adjusting method for a heating system, which is used for realizing automatic adjustment of hydraulic balance of each branch in the heating system shown in fig. 1. As shown in fig. 2, the method of this embodiment specifically includes the following steps:
s1, controlling the flow regulating valve in the heating branch to be opened independently at a corresponding initial opening degree for each heating branch, and acquiring the water inlet and outlet pressure difference corresponding to the heating branch after the flow regulating valve in the heating branch is opened independently for a preset time;
s2, comparing the water inlet and outlet pressure differences corresponding to the plurality of heating branches;
s3, when the difference value between the water inlet and outlet pressure difference corresponding to the plurality of heating branches exceeds the preset range, adjusting the opening degree of the flow regulating valve in the corresponding heating branch according to the water inlet and outlet pressure difference corresponding to the plurality of heating branches;
and S4, after waiting for a preset waiting time, updating the initial opening of the flow regulating valve in the regulated heating branch circuit into the regulated opening, and repeating the steps until the difference value between the water inlet and outlet pressure difference corresponding to the plurality of heating branch circuits falls into the preset range.
Through the steps, the automatic regulation of hydraulic balance of each heating branch in the heating system can be realized, the debugging time of a large number of heating systems of workers is saved, the debugging accuracy can be greatly improved, the heating comfort of a user is further improved, and meanwhile, the cost and the space are saved due to the fact that a float flowmeter is not required to be adopted. In addition, when a certain heating branch is closed and not used, the method can be used for readjusting, and the flow of each heating branch is prevented from being unbalanced again.
Example 2
The embodiment provides a concrete implementation manner of the automatic hydraulic balance adjustment method of the heating system in embodiment 1 based on the heating system including four heating branches L1-L4 in fig. 1.
In this embodiment, the flow regulating valves corresponding to the heating branches are adjusted to an initial opening (preferably, a maximum opening) in advance by the stepping motors 14, and when the room temperature is stable after a period of operation, the method for automatically adjusting the hydraulic balance of the heating system starts to be executed.
In the present embodiment, the above step S1 is specifically realized by the following steps S11-S15:
and S11, controlling the corresponding stepping motors 14 to completely close the heating branches L2, L3 and L4, and independently opening the heating branch L1 for a preset time, wherein the opening degree of the heating branch L1 is the corresponding initial opening degree. At this time, only the heating water in the heating branch line L1 circulates in the water separator 11 and the water collector 12, and therefore, the difference between the pressures collected by the pressure sensors 18 and 19 on the water separator 11 and the water collector 12 is calculated, and the difference Δ P1 between the inlet and outlet water pressures corresponding to the heating branch line L1 is obtained.
And S12, controlling the corresponding stepping motors 14 to completely close the heating branches L1, L3 and L4, and independently opening the heating branch L2 for a preset time, wherein the opening degree of the heating branch L2 is the corresponding initial opening degree. At this time, only the heating water in the heating branch line L2 circulates in the water separator 11 and the water collector 12, and therefore, the difference between the pressures collected by the pressure sensors 18 and 19 on the water separator 11 and the water collector 12 is calculated, and the difference Δ P2 between the inlet and outlet water pressures corresponding to the heating branch line L2 is obtained.
And S13, controlling the corresponding stepping motor 14 to completely close the heating branches L1, L2 and L4, and independently opening the heating branch L3 for a preset time, wherein the opening is the corresponding initial opening. At this time, only the heating water in the heating branch line L3 circulates in the water separator 11 and the water collector 12, and therefore, the difference between the pressures collected by the pressure sensors 18 and 19 on the water separator 11 and the water collector 12 is calculated, and the difference Δ P3 between the inlet and outlet water pressures corresponding to the heating branch line L3 is obtained.
And S14, controlling the corresponding stepping motors 14 to completely close the heating branches L1, L2 and L3, and independently opening the heating branch L4 for a preset time, wherein the opening degree of the heating branch L4 is the corresponding initial opening degree. At this time, only the heating water in the heating branch line L4 circulates in the water separator 11 and the water collector 12, and therefore, the difference between the pressures collected by the pressure sensors 18 and 19 on the water separator 11 and the water collector 12 is calculated, and the difference Δ P4 between the inlet and outlet water pressures corresponding to the heating branch line L4 is obtained.
And S15, controlling the flow regulating valves in all the heating branches L1-L4 to be opened and regulating the flow regulating valves back to the corresponding initial opening degrees.
In this embodiment, the step S2 is specifically implemented by the following steps:
comparing the inlet and outlet water pressure differences delta P1, delta P2, delta P3 and delta P4 corresponding to each heating branch L1-L4 to judge whether the difference between the inlet and outlet water pressure differences delta P1, delta P2, delta P3 and delta P4 corresponding to each heating branch L1-L4 exceeds a preset range, if not, indicating that the delta P1, the delta P2, the delta P3 and the delta P4 are close, the hydraulic power of each branch is relatively balanced without adjustment, and if so, executing a step S3.
In this embodiment, the step S3 is specifically implemented by the following steps:
s31, determining whether a difference between Δ P1 and Δ P4 is significant, for example, determining whether the water inlet/outlet pressure difference corresponding to one of the heating branches is significantly greater than the water inlet/outlet pressure difference corresponding to the other of the route collecting branches (i.e., whether the difference obtained by subtracting a first predetermined value from the water inlet/outlet pressure difference corresponding to the one of the heating branches is greater than the water inlet/outlet pressure difference corresponding to the other of the heating branches), or whether the water inlet/outlet pressure difference corresponding to the one of the heating branches is significantly less than the water inlet/outlet pressure difference corresponding to the other of the route collecting branches (i.e., whether the sum of the water inlet/outlet pressure difference corresponding to the one of the heating branches and a second predetermined value is less than the water inlet/outlet pressure difference corresponding to the other of the heating branches).
And S32, when the water inlet and outlet pressure difference corresponding to one heating branch is obviously greater than the water inlet and outlet pressure differences corresponding to the other route collecting branches, reducing the opening degree of the flow regulating valves in the other heating branches according to a first preset rule. In this embodiment, the first preset rule may be configured to decrease the opening degrees of the flow regulating valves in the remaining heating branches by a first preset magnitude or a first preset gradient.
When the water inlet and outlet pressure difference corresponding to a certain heating branch is obviously greater than the water inlet and outlet pressure differences corresponding to other heating branches, for example, Δ P1 is obviously greater than Δ P2, Δ P3 and Δ P4, it indicates that the return water temperature of the corresponding heating branch L1 is low, the heating flow is small, and the corresponding room has unheated temperature. Accordingly, the opening degree of the flow rate adjustment valve in the remaining heating branch is controlled to be decreased by a predetermined magnitude or gradient by the corresponding stepping motor 14, and accordingly, the flow rate in the heating branch L1 is increased, thereby reducing Δ P1 and Δ
The difference between P2, Δ P3, Δ P4.
And S33, when the water inlet and outlet pressure difference corresponding to one heating branch is obviously smaller than the water inlet and outlet pressure differences corresponding to the other road collecting branches, reducing the opening degree of the flow regulating valve in one heating branch according to a second preset rule. In this embodiment, the second preset rule may be configured to decrease the opening degree of the flow regulating valve in the one of the heating branches by a second preset magnitude or a second preset gradient.
When the water inlet and outlet pressure difference corresponding to a certain heating branch is obviously smaller than the water inlet and outlet pressure differences corresponding to other heating branches, for example, Δ P1 is obviously smaller than Δ P2, Δ P3 and Δ P4, it indicates that the return water temperature of the corresponding heating branch L1 is high, the heating flow is large, and the corresponding room is overheated. Accordingly, the corresponding stepping motor 14 is controlled to decrease the opening degree of the flow rate adjustment valve in the corresponding heating branch L1 by a predetermined magnitude or gradient, and accordingly, the flow rates in the remaining heating branches L2, L3, L4 will increase, thereby narrowing the gap between Δ P1 and Δ P2, Δ P3, Δ P4.
In this embodiment, the step S4 is specifically implemented by the following steps:
waiting for a preset waiting time, after the room temperature is stable, updating the initial opening of the flow regulating valve in the regulated heating branch to the regulated opening, and returning to the step S1 to perform repeated regulation and comparison until the difference between the inlet and outlet water pressure differences corresponding to the heating branches L1-L4 falls within the preset range, namely, when the pressure difference is close to the pressure difference of the inlet and outlet water of the heating branches L1, the pressure difference of the inlet and outlet water of the heating branches delta P2, the pressure difference of the inlet and outlet water of the heating branches delta P3 and the pressure difference of the inlet and outlet water of the heating branches delta P4, the hydraulic balance is regulated.
After the hydraulic balance adjustment is completed, recording the opening degree of the flow regulating valve in each heating branch as the initial opening degree of each flow regulating valve after the heating system is restarted, so that when the heating system is restarted, the corresponding flow regulating valve is directly regulated to the recorded initial opening degree, and the hydraulic balance of each branch can still be maintained after the heating system is restarted.
Through the steps, the automatic regulation of hydraulic balance of each heating branch in the heating system can be realized, the debugging time of a large number of heating systems of workers is saved, the debugging accuracy can be greatly improved, the heating comfort of a user is further improved, and meanwhile, the cost and the space are saved due to the fact that a float flowmeter is not required to be adopted. In addition, when a certain heating branch is closed and not used, the method can be used for readjusting, and the flow of each heating branch is prevented from being unbalanced again.
Example 3
The embodiment provides an automatic hydraulic balance adjusting device for a heating system, which is used for realizing automatic adjustment of hydraulic balance of each branch in the heating system shown in fig. 1. As shown in fig. 3, the apparatus of the present embodiment specifically includes:
a water inlet and outlet pressure difference obtaining module 21, configured to control the flow regulating valve in each heating branch to be opened individually at a corresponding initial opening degree for each heating branch, and obtain a water inlet and outlet pressure difference corresponding to each heating branch after the flow regulating valve in each heating branch is opened individually for a predetermined time;
the comparison module 22 is used for comparing the water inlet and outlet pressure differences corresponding to the plurality of heating branches;
the adjusting module 23 is configured to adjust an opening degree of the flow adjusting valve in the corresponding heating branch according to the water inlet and outlet pressure differences corresponding to the plurality of heating branches when a difference value between the water inlet and outlet pressure differences corresponding to the plurality of heating branches exceeds a predetermined range;
and the updating module 24 is configured to update the initial opening of the flow regulating valve in the adjusted heating branch to an adjusted opening after waiting for a predetermined waiting time, and recall the water inlet and outlet pressure difference obtaining module until the difference between the water inlet and outlet pressure differences corresponding to the plurality of heating branches falls within the predetermined range.
The embodiment can realize the automatic adjustment of hydraulic balance of each heating branch in the heating system, saves the debugging time of a large number of heating systems of workers, can also greatly improve the debugging accuracy, further promotes the heating comfort of users, and saves the cost and the space due to no need of adopting a float flowmeter. In addition, when a certain heating branch is closed and not used, the method can be used for readjusting, and the flow of each heating branch is prevented from being unbalanced again.
Example 4
The embodiment provides a concrete implementation manner of the automatic hydraulic balance adjusting device of the heating system in embodiment 3 based on the heating system including four heating branches L1-L4 in fig. 1.
In this embodiment, the flow regulating valves corresponding to the heating branches are adjusted to an initial opening (preferably, a maximum opening) in advance by the stepping motors 14, and when the room temperature is stable after the operation for a period of time, the automatic hydraulic balance adjusting device of the heating system of this embodiment starts to operate.
In the present embodiment, the inlet/outlet water pressure difference obtaining module 21 specifically performs the following operations:
first, the corresponding stepping motor 14 is controlled to completely turn off the heating branches L2, L3, and L4, and the heating branch L1 is individually turned on for a predetermined time, with the turning-on degree being the corresponding initial turning-on degree. At this time, only the heating water in the heating branch line L1 circulates in the water separator 11 and the water collector 12, and therefore, the difference between the pressures collected by the pressure sensors 18 and 19 on the water separator 11 and the water collector 12 is calculated, and the difference Δ P1 between the inlet and outlet water pressures corresponding to the heating branch line L1 is obtained.
Then, the corresponding stepping motor 14 is controlled to completely close the heating branches L1, L3, and L4, and the heating branch L2 is opened for a predetermined time, with the opening degree being the corresponding initial opening degree. At this time, only the heating water in the heating branch line L2 circulates in the water separator 11 and the water collector 12, and therefore, the difference between the pressures collected by the pressure sensors 18 and 19 on the water separator 11 and the water collector 12 is calculated, and the difference Δ P2 between the inlet and outlet water pressures corresponding to the heating branch line L2 is obtained.
Then, the corresponding stepping motor 14 is controlled to completely close the heating branches L1, L2, and L4, and the heating branch L3 is independently opened for a predetermined time, with the opened state being the corresponding initial opening. At this time, only the heating water in the heating branch line L3 circulates in the water separator 11 and the water collector 12, and therefore, the difference between the pressures collected by the pressure sensors 18 and 19 on the water separator 11 and the water collector 12 is calculated, and the difference Δ P3 between the inlet and outlet water pressures corresponding to the heating branch line L3 is obtained.
And then, controlling the corresponding stepping motor 14 to completely close the heating branches L1, L2 and L3, and separately opening the heating branch L4 for a preset time, wherein the opening degree of the heating branch is the corresponding initial opening degree. At this time, only the heating water in the heating branch line L4 circulates in the water separator 11 and the water collector 12, and therefore, the difference between the pressures collected by the pressure sensors 18 and 19 on the water separator 11 and the water collector 12 is calculated, and the difference Δ P4 between the inlet and outlet water pressures corresponding to the heating branch line L4 is obtained.
And finally, controlling the flow regulating valves in all the heating branches to regulate the corresponding initial opening.
In this embodiment, the comparing module 22 is specifically configured to:
and judging whether the difference values among the water inlet and outlet pressure differences delta P1, delta P2, delta P3 and delta P4 corresponding to the heating branches L1-L4 exceed a preset range, if not, indicating that the delta P1, the delta P2, the delta P3 and the delta P4 are close, and calling the adjusting module 23 if the difference values exceed the preset range, wherein the hydraulic power of each branch is relatively balanced without adjustment.
In this embodiment, the adjusting module 23 is specifically configured to:
firstly, whether obvious differences exist between Δ P1 and Δ P4 is judged, for example, whether the water inlet and outlet pressure difference corresponding to one of the heating branches is obviously greater than the water inlet and outlet pressure difference corresponding to the other road collecting branches (i.e., whether the difference obtained by subtracting a first preset value from the water inlet and outlet pressure difference corresponding to the one of the heating branches is greater than the water inlet and outlet pressure difference corresponding to the other heating branches), or whether the water inlet and outlet pressure difference corresponding to the one of the heating branches is obviously less than the water inlet and outlet pressure difference corresponding to the other road collecting branches (i.e., whether the sum of the water inlet and outlet pressure difference corresponding to the one of the heating branches and a second preset value is less than the water inlet and outlet pressure difference corresponding to the other heating branches).
And when the water inlet and outlet pressure difference corresponding to one heating branch is obviously greater than the water inlet and outlet pressure differences corresponding to the other road collecting branches, reducing the opening degree of the flow regulating valves in the other heating branches according to a first preset rule. In this embodiment, the first preset rule may be configured to decrease the opening degrees of the flow regulating valves in the remaining heating branches by a first preset magnitude or a first preset gradient.
When the water inlet and outlet pressure difference corresponding to a certain heating branch is obviously greater than the water inlet and outlet pressure differences corresponding to other heating branches, for example, Δ P1 is obviously greater than Δ P2, Δ P3 and Δ P4, it indicates that the return water temperature of the corresponding heating branch L1 is low, the heating flow is small, and the corresponding room has unheated temperature. Accordingly, the opening degree of the flow rate adjustment valve in the remaining heating branch is controlled to be decreased by a predetermined magnitude or gradient by the corresponding stepping motor 14, and accordingly, the flow rate in the heating branch L1 is increased, thereby narrowing the gap between Δ P1 and Δ P2, Δ P3, Δ P4.
And when the water inlet and outlet pressure difference corresponding to one heating branch is obviously smaller than the water inlet and outlet pressure differences corresponding to the other road collecting branches, reducing the opening degree of the flow regulating valve in one heating branch according to a second preset rule. In this embodiment, the second preset rule may be configured to decrease the opening degree of the flow regulating valve in the one of the heating branches by a second preset magnitude or a second preset gradient.
When the water inlet and outlet pressure difference corresponding to a certain heating branch is obviously smaller than the water inlet and outlet pressure differences corresponding to other heating branches, for example, Δ P1 is obviously smaller than Δ P2, Δ P3 and Δ P4, it indicates that the return water temperature of the corresponding heating branch L1 is high, the heating flow is large, and the corresponding room is overheated. Accordingly, the corresponding stepping motor 14 is controlled to decrease the opening degree of the flow rate adjustment valve in the corresponding heating branch L1 by a predetermined magnitude or gradient, and accordingly, the flow rates in the remaining heating branches L2, L3, L4 will increase, thereby narrowing the gap between Δ P1 and Δ P2, Δ P3, Δ P4.
In this embodiment, the updating module 24 is specifically configured to:
waiting for a preset waiting time, updating the initial opening of the flow regulating valve in the regulated heating branch to the regulated opening after the room temperature is stable, and calling the inlet and outlet water pressure difference acquisition module 21 again to perform repeated regulation and comparison until the difference values between the inlet and outlet water pressure differences corresponding to the heating branches L1-L4 fall within the preset range, namely until the difference values are within the range of delta P1, delta P2,
When the delta P3 and the delta P4 are close, the adjustment of the hydraulic balance is completed.
After the hydraulic balance adjustment is completed, recording the opening degree of the flow regulating valve in each heating branch as the initial opening degree of each flow regulating valve, so that when the heating system is restarted, the corresponding flow regulating valve is directly adjusted to the recorded initial opening degree, and the hydraulic balance of each branch can still be maintained after the heating system is restarted.
The embodiment can realize the automatic adjustment of hydraulic balance of each heating branch in the heating system, saves the debugging time of a large number of heating systems of workers, can also greatly improve the debugging accuracy, further promotes the heating comfort of users, and saves the cost and the space due to no need of adopting a float flowmeter. In addition, when a certain heating branch is closed and not used, the method can be used for readjusting, and the flow of each heating branch is prevented from being unbalanced again.
Example 5
Referring again to fig. 1, the present embodiment provides an automatic water balance adjustment system 10, including: the heating system comprises a water separator 11, a water collector 12, a plurality of heating branches (4 are shown in fig. 1 and are respectively L1-L4) connected in parallel between the water separator 11 and the water collector 12, a plurality of flow regulating valves arranged in the plurality of heating branches L1-L4 in a one-to-one correspondence manner, a plurality of stepping motors 14 connected with the plurality of flow regulating valves in a one-to-one correspondence manner, a control assembly 15 connected with the plurality of stepping motors 14 through a wiring harness, a first pressure sensor 18 arranged at a water inlet end of the water separator 11, and a second pressure sensor 19 arranged at a water outlet end of the water collector 12.
In this embodiment, the control assembly 15 is integrated with the automatic hydraulic balance adjustment device of the heating system in embodiment 3 or 4.
When the flow regulating valve in a certain heating branch is opened alone, the pressure difference acquisition module acquires the water inlet and outlet pressure difference corresponding to the heating branch according to the pressure difference acquired by the first pressure sensor 18 and the second pressure sensor 19.
The embodiment can realize the automatic adjustment of hydraulic balance of each heating branch in the heating system, save the debugging time of a large amount of heating systems of workers, also can greatly improve the debugging accuracy, and then promote the heating comfort of users.
Example 6
The present embodiment provides an electronic device, which may be represented in the form of a computing device (for example, may be a server device), and includes a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor, when executing the computer program, may implement the automatic hydraulic balance adjustment method for a heating system provided in embodiment 1 or 2.
Fig. 4 shows a schematic diagram of a hardware structure of the present embodiment, and as shown in fig. 4, the electronic device 9 specifically includes:
at least one processor 91, at least one memory 92, and a bus 93 for connecting the various system components (including the processor 91 and the memory 92), wherein:
the bus 93 includes a data bus, an address bus, and a control bus.
The processor 91 executes a computer program stored in the memory 92 to perform various functional applications and data processing, such as a method for automatically adjusting the hydraulic balance of a heating system according to embodiment 1 or 2 of the present invention.
The electronic device 9 may further communicate with one or more external devices 94 (e.g., a keyboard, a pointing device, etc.). Such communication may be through an input/output (I/O) interface 95. Also, the electronic device 9 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet) via the network adapter 96. The network adapter 96 communicates with the other modules of the electronic device 9 via the bus 93. It should be understood that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the electronic device 9, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems, etc.
It should be noted that although in the above detailed description several units/modules or sub-units/modules of the electronic device are mentioned, such a division is merely exemplary and not mandatory. Indeed, the features and functionality of two or more of the units/modules described above may be embodied in one unit/module, according to embodiments of the application. Conversely, the features and functions of one unit/module described above may be further divided into embodiments by a plurality of units/modules.
Example 7
The present embodiment provides a computer-readable storage medium on which a computer program is stored, the program, when being executed by a processor, implementing the steps of the automatic hydraulic balance adjustment method of the heating system of embodiment 1 or 2.
More specific examples, among others, that the readable storage medium may employ may include, but are not limited to: a portable disk, a hard disk, random access memory, read only memory, erasable programmable read only memory, optical storage device, magnetic storage device, or any suitable combination of the foregoing.
In a possible embodiment, the invention can also be implemented in the form of a program product comprising program code for causing a terminal device to carry out the steps of implementing the heating system hydraulic balance automatic adjustment method of example 1, when the program product is run on the terminal device.
Where program code for carrying out the invention is written in any combination of one or more programming languages, the program code may be executed entirely on the user device, partly on the user device, as a stand-alone software package, partly on the user device and partly on a remote device or entirely on the remote device.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. A method for automatically adjusting hydraulic balance of a heating system comprises a plurality of heating branches, wherein each heating branch is provided with a flow adjusting valve, and the method is characterized by comprising the following steps:
for each heating branch, controlling the flow regulating valve in the heating branch to be opened independently at a corresponding initial opening degree, and acquiring the water inlet and outlet pressure difference corresponding to the heating branch after the flow regulating valve in the heating branch is opened independently for a preset time;
comparing the water inlet and outlet pressure differences corresponding to the plurality of heating branches;
when the difference value between the water inlet and outlet pressure differences corresponding to the plurality of heating branches exceeds a preset range, adjusting the opening degree of the flow regulating valve in the corresponding heating branch according to the water inlet and outlet pressure differences corresponding to the plurality of heating branches;
updating the initial opening of the flow regulating valve in the regulated heating branch to the regulated opening, and repeating the steps until the difference value between the water inlet pressure difference and the water outlet pressure difference corresponding to the plurality of heating branches falls into the preset range;
according to the business turn over water pressure difference that many heating branches correspond, adjust and correspond in the heating branch road the aperture of flow control valve includes:
and when the difference obtained by subtracting a first preset value from the water inlet and outlet pressure difference corresponding to one heating branch is larger than the water inlet and outlet pressure differences corresponding to the other heating branches, reducing the opening degree of flow regulating valves in the other heating branches according to a first preset rule.
2. The method of claim 1, wherein after obtaining the water pressure difference between the inlet and the outlet of all the heating branches, the method further comprises:
and controlling the flow regulating valves in all the heating branches to regulate the corresponding initial opening.
3. The method of claim 2, wherein the adjusting the opening of the flow control valve in the corresponding heating branch according to the water pressure difference between the inlet and the outlet of the plurality of heating branches comprises:
and when the sum of the water inlet and outlet pressure difference corresponding to one heating branch and a second preset value is smaller than the water inlet and outlet pressure difference corresponding to the other heating branches, reducing the opening degree of the flow regulating valve in one heating branch according to a second preset rule.
4. The utility model provides a heating system hydraulic balance automatic regulating apparatus, heating system includes many heating branches, every be provided with flow control valve in the heating branch road respectively, its characterized in that, the device includes:
the inlet and outlet water pressure difference acquisition module is used for controlling the flow regulating valve in each heating branch to be opened independently at a corresponding initial opening degree for each heating branch, and acquiring the inlet and outlet water pressure difference corresponding to each heating branch after the flow regulating valve in each heating branch is opened independently for a preset time;
the comparison module is used for comparing the water inlet and outlet pressure differences corresponding to the plurality of heating branches;
the regulating module is used for regulating the opening degree of the flow regulating valve in the corresponding heating branch according to the water inlet and outlet pressure difference corresponding to the plurality of heating branches when the difference value between the water inlet and outlet pressure differences corresponding to the plurality of heating branches exceeds a preset range;
the updating module is used for updating the initial opening of the flow regulating valve in the regulated heating branch into the regulated opening after waiting for a preset waiting time, and calling the water inlet and outlet pressure difference obtaining module again until the difference value between the water inlet and outlet pressure differences corresponding to the plurality of heating branches falls into the preset range;
when the difference obtained by subtracting a first preset value from the water inlet and outlet pressure difference corresponding to one heating branch is larger than the water inlet and outlet pressure differences corresponding to the other heating branches, the adjusting module reduces the opening degree of the flow adjusting valves in the other heating branches according to a first preset rule.
5. The automatic hydraulic balance adjusting device for a heating system according to claim 4, wherein the water inlet and outlet pressure difference obtaining module is further configured to: and after the water inlet and outlet pressure differences corresponding to all the heating branches are obtained, controlling the flow regulating valves in all the heating branches to regulate the corresponding initial opening degrees.
6. The automatic regulating device for hydraulic balance of heating system according to claim 5, wherein when the sum of said water pressure difference for one of heating branches and a second predetermined value is less than said water pressure difference for the other heating branches, said regulating module decreases the opening of the flow regulating valve in said one of heating branches according to a second predetermined rule.
7. An automatic water balance adjusting system comprises a water distributor, a water collector, a plurality of heating branches connected in parallel between the water distributor and the water collector, a plurality of flow regulating valves arranged in the plurality of heating branches in a one-to-one correspondence manner, a plurality of stepping motors connected with the plurality of flow regulating valves in a one-to-one correspondence manner, and a control assembly connected with the plurality of stepping motors, wherein the automatic water balance adjusting device of a heating system according to any one of claims 4 to 6 is integrated in the control assembly.
8. The automatic water balance adjustment system according to claim 7, wherein the heating system further comprises:
the first pressure sensor is arranged at the water inlet end of the water separator, and the second pressure sensor is arranged at the water outlet end of the water collector;
when the flow regulating valve in a certain heating branch is independently opened, the pressure difference acquisition module acquires the water inlet and outlet pressure difference corresponding to the heating branch according to the pressure difference acquired by the first pressure sensor and the second pressure sensor.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method according to any of claims 1 to 3 are implemented when the computer program is executed by the processor.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 3.
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| CN202485107U (en) * | 2012-03-16 | 2012-10-10 | 卓旦春 | Balancing device of water separator and water collector in heating system |
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