CN113587444A - Intelligent boiler energy-saving device and energy-saving method - Google Patents
Intelligent boiler energy-saving device and energy-saving method Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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Abstract
The invention relates to an intelligent boiler energy-saving device and an energy-saving method, wherein the provided device comprises: the system comprises a sensing system, an electronic valve system, a control system and a heat utilization end, wherein the sensing system and the electronic valve system are connected with the control system, the sensing system is connected with the electronic valve system, and the sensing system is connected with the heat utilization end; the sensing system is used for detecting whether the heat utilization end has the heat utilization requirement, and when the heat utilization end has the heat utilization requirement, the control system controls the electronic valve system to be in an opening state; when the heat utilization end does not have the heat utilization requirement, the control system controls the electronic valve system to be in the closed state, so that the loss of the heat-carrying medium between the corresponding electronic valve and the heat utilization end is prevented, and the energy-saving benefit of the boiler system is improved.
Description
Technical Field
The invention relates to the field of boiler energy conservation, in particular to an intelligent boiler energy-saving device and an energy-saving method.
Background
According to statistics, the annual coal consumption of industrial boilers in China accounts for 1/3 of the total coal output in China, the emission of wastes such as sulfur dioxide accounts for 1/5 of the total national emission amount, and the use of the industrial boilers seriously wastes energy and pollutes the environment. Therefore, the energy-saving and emission-reducing work of the industrial boiler is very necessary for promoting the long-term health development of China.
The currently known energy-saving carbon-discharging reforming scheme mainly focuses on improving the combustion thermal efficiency of the boiler, and strategies for improving the combustion thermal efficiency of the boiler by the technologies mainly organically combine a high-new material technology, a combustion technology and a boiler comprehensive technology and achieve the aim through a series of physical and chemical changes.
In addition to the above boiler energy saving technology, in the prior art, there is also a data analysis method for finding the best air and fuel ratio through big data and the like. Based on system data of the industrial boiler measured by an existing intelligent boiler management system, the technologies introduce a proper big data analysis technology to find out system parameters influencing the combustion thermal efficiency of the boiler and research the relevance of the combustion thermal efficiency of the boiler and the system parameters. Through big data analysis, system parameters influencing the combustion thermal efficiency of the boiler are also found out, for example, a relation that the combustion thermal efficiency of the boiler is in direct proportion to the load of the boiler is provided. The researches successfully use big data technology to deduce the statistical relevance of the boiler combustion thermal efficiency and the system parameters when the boiler operates, and accordingly deduce the optimal combination of the boiler controllable parameters such as the air quantity in and out of the stove to improve the boiler combustion thermal efficiency and further reduce the energy consumption of the boiler.
Although the introduction of these intelligent boiler management systems does significantly improve the performance of the industrial boiler after reforming, the development of technologies for improving the combustion thermal efficiency of the boiler is focused on the boiler energy saving technology matched with the intelligent boiler management systems. At present, no technology for improving energy saving by using hot end research and development exists.
Disclosure of Invention
The invention aims to provide an intelligent boiler energy-saving device and an energy-saving method, which are researched and developed by a hot end to realize boiler energy saving.
In order to achieve the purpose, the invention provides the following scheme:
an intelligent boiler economizer, the apparatus comprising: the system comprises a sensing system, an electronic valve system, a control system and a heat utilization end, wherein the sensing system and the electronic valve system are connected with the control system, the sensing system is connected with the electronic valve system, and the sensing system is connected with the heat utilization end;
the sensing system is used for detecting whether the heat utilization end has the heat utilization requirement, and when the heat utilization end has the heat utilization requirement, the control system controls the electronic valve system to be in an opening state; when the heat utilization end has no heat utilization requirement, the control system controls the electronic valve system to be in a closed state.
The invention also provides an energy-saving method for the intelligent boiler, which comprises the following steps:
detecting the state of an electronic valve connected with a sensing unit to obtain a state detection result;
detecting whether a heat utilization end connected with the sensing unit has a heat utilization requirement or not through the sensing unit according to a state detection result to obtain a heat utilization requirement detection result;
and controlling the electronic valve to be in an opening or closing state according to the state detection result and the heat demand detection result, and returning to the state of detecting the electronic valve connected with the sensing unit to obtain a state detection result.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
according to the intelligent boiler energy-saving device and the energy-saving method, the sensing system, the electronic valve system, the control system and the heat utilization end are arranged, when the sensor system detects that the heat utilization end connected with the sensor system does not need to use heat, the control system closes the corresponding electronic valve to prevent the heat-carrying medium from being lost between the corresponding electronic valve and the heat utilization end, and the energy-saving benefit of the boiler system is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an intelligent boiler energy-saving device provided in embodiment 1 of the present invention;
fig. 2 is a schematic diagram of heat transfer in the intelligent boiler energy saving device provided in embodiment 1 of the present invention;
fig. 3 is a tree-like relationship diagram of the boiler, the electronic valves, the sensing units and the hot end provided in embodiment 1 of the present invention;
fig. 4 is a flowchart of an energy saving method for an intelligent boiler according to embodiment 2 of the present invention.
Description of the symbols:
1-a sensing system; 2-an electronic valve system; 3-a control system; 4-using a hot end; 11-a sensing unit; 21-electronic valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The existing boiler energy-saving technology focuses on researching and developing the combustion heat efficiency of the boiler. The invention is observed in the actual application of a plurality of industrial boilers in factories, and it is found that most of the boilers are produced and supplied to the hot end users continuously according to the output load parameters of the boilers at present, even if the hot end users do not need to use hot water for lunch break temporarily, as long as the output load parameters of the boilers are not adjusted by the managers of the boilers, the boilers still supply hot water or steam to the tail ends continuously according to the original production settings. The final result of the heat supply is that the heat is lost due to natural cooling before being used by the hot end, however, no corresponding boiler energy-saving scheme can be found in the market to solve the problem of energy waste.
To solve the problem, the present invention considers that if the upstream valve of the hot end which does not need to use hot water or hot gas can be closed when the hot end no longer needs to use hot water or hot gas, the problem of heat loss between the upstream valve and the hot end can be avoided, so that the purpose of reducing the energy consumption of the boiler can be achieved by reducing the waste of heat energy.
In view of the above problems, an object of the present invention is to provide an intelligent boiler energy saving device and an energy saving method, which can reduce waste of heat energy and reduce energy consumption of a boiler by detecting a heat demand of a hot end to open or close an electronic valve at an upstream of the hot end.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example 1
The embodiment provides an intelligent boiler energy-saving device, as shown in fig. 1, the device includes: the system comprises a sensing system 1, an electronic valve system 2, a control system 3 and a heat utilization end 4, wherein the sensing system 1 and the electronic valve system 2 are connected with the control system 3, the sensing system 1 is connected with the electronic valve system 2, and the sensing system 1 is connected with the heat utilization end 4;
the sensing system 1 is used for detecting whether a heat utilization requirement exists in the heat utilization end 4, and when the heat utilization requirement exists in the heat utilization end 4, the control system 3 controls the electronic valve system 2 to be in an opening state; when the heat utilization end 4 has no heat utilization requirement, the control system 3 controls the electronic valve system 2 to be in a closed state.
As shown in fig. 2, after the medium with heat, such as hot water or steam, output from the boiler passes through a certain period of transmission, the medium with heat may be divided into a plurality of pipes to be transmitted to different hot ends 4 for use. All spaces for transporting and temporarily storing the hot medium, such as pipes or cylinders from the boiler to the hot end 4, are collectively referred to as a "thermal energy transfer section" in the present embodiment.
As shown in fig. 2, the sensing unit 11 in this embodiment may be disposed on the thermal energy transfer section near the hot end 4, the purpose of this sensing unit 11 is to detect whether there is a need for continued use of the hot strip medium with the hot end 4 connected thereto, and transmits the detection result to the control system 3, the control system 3 determines whether the supply of the tape heat medium to the hot end 4 behind the sensor unit 11 needs to be suspended, if the control system 3 determines that the hot end 4 behind the sensor unit 11 does not need to use the tape heat medium, the electronic valve 21 connected to the sensing unit 11 is closed, so that the hot medium will not enter the thermal energy transfer pipe after the closed electronic valve 21, so that the heat loss in the thermal energy transfer section after the electronic valve 21 is not increased, therefore, the heat loss at the heat energy transmission section can be effectively reduced, and the energy-saving benefit of the boiler is effectively improved.
In this embodiment, the electronic valve system 2 includes at least one electronic valve 21, the sensing system 1 includes at least one sensing unit 11, and each sensing unit 11 is connected to at least one hot terminal 4 and one electronic valve 21.
The heated medium is driven by pressure to pass through at least 1 electronic valve 21 and 1 sensing unit 11 along the heat energy transfer section to the hot end 4. The boiler, the electronic valve 21, the sensing unit 11 and the hot end 4 form a tree structure according to the flowing process of the hot medium, as shown in fig. 3, if the hot medium flows from node a to node B, node a is called the parent node of node B, and node B is called one of the child nodes of node a, so in this embodiment, the boiler is the root of the tree, and the hot end 4 is the leaf of the tree. The tree is particularly characterized in that the parent node of all leaves (using hot end 4) is the sensing unit 11, while the other nodes are the electronic valves 21, and in addition, the parent node of each sensing unit 11 has only one child node.
For convenience of explaining the control of the specific electronic valve 21 in the following process, the concept of "corresponding electronic valve 21" is introduced, and in this embodiment, the corresponding electronic valve 21 can be understood as: the parent node of the sensing unit 11 is a corresponding electronic valve 21 of the sensing unit 11, and if a is the corresponding electronic valve 21 of the sensing unit 11 and other siblings of a all belong to the closed state, the parent node of a is also a corresponding electronic valve 21 of the sensing unit 11.
Optionally, the sensing unit 11 includes a power detection sensor; the power supply detection sensor is used for detecting the on-off condition of the power supply of the hot end 4 connected with the sensing unit 11, when the power supply of at least one hot end 4 connected with the sensing unit 11 is closed, the power supply indicates that the hot end 4 has a heat utilization requirement, otherwise, the hot end 4 does not have the heat utilization requirement.
In this embodiment, the method for detecting whether there is a need for using the thermal medium in the hot end 4 connected to the sensing unit 11 is to detect the power supply of the subsequent hot end 4 through the power supply detection sensor, and when the power supply detection sensor detects that the power supply of the subsequent hot end 4 is disconnected, it indicates that the subsequent hot end 4 does not use heat at this time.
In addition to the power supply detection sensor for determining whether the hot end 4 has a heat demand, in this embodiment, the sensing unit 11 may further include a flow meter, that is, the flow rate per unit time of the tape-like thermal medium passing through the thermal energy transfer section provided with the flow meter is detected by the flow meter, and when the detected flow rate per unit time is smaller than a preset specific flow rate value, it indicates that the subsequent hot end 4 does not use heat at this time.
Both cases should consider whether the electronic valve 21 associated with the sensing unit 11 is to be closed, in order to save energy consumption with the thermal medium through the electronic valves 21.
According to the intelligent boiler energy-saving device provided by the embodiment, whether the heat consumption requirement exists in the heat consumption end 4 connected with the sensing system 1 is detected, when the sensing system detects that the heat consumption end 4 connected with the sensing system possibly does not need heat consumption, the control system 3 closes the corresponding electronic valve 21 to prevent the heat-carrying medium from entering the heat energy transmission pipeline behind the disconnected electronic valve 21, so that the heat loss of the heat-carrying medium in the areas is avoided, the energy consumption of the boiler is reduced, the energy-saving benefit of the boiler system is improved, and the heat loss between the upstream valve and the heat consumption end 4 is avoided.
Example 2
The present embodiment provides an intelligent boiler energy saving method, which is a use method of the intelligent boiler energy saving device in embodiment 1, as shown in fig. 4, the method includes:
s1, detecting the state of the electronic valve 21 connected with the sensing unit 11 to obtain a state detection result;
s2, detecting whether a heat utilization end 4 connected with the sensing unit 11 has a heat utilization requirement or not through the sensing unit 11 according to the state detection result to obtain a heat utilization requirement detection result;
in this embodiment, when the electronic valve 21 connected to the sensing unit 11 is in different states, it is necessary to adopt different methods to detect whether the hot end 4 has a heat demand. Therefore, before the detection of the presence of the heat demand at the hot end 4, it is necessary to detect the open or closed state of the electronic valve 21 connected to the sensor unit 11.
Specifically, when the state detection result of the electronic valve 21 is the open state, the power supply detection sensor in the sensing unit 11 may detect the open/close condition of the power supply of the heat consuming end 4 connected to the sensing unit 11 to obtain a power supply detection result, and then obtain a heat consumption demand detection result according to the power supply detection result, or may detect the flow rate of the heat medium flowing through the flow meter in unit 11 per unit time through the flow meter to obtain a detection flow rate, determine whether the detection flow rate is smaller than a preset flow rate, obtain a flow rate determination result, obtain a heat consumption demand detection result according to the flow rate determination result, and when the flow rate determination result is yes, then there is no heat consumption demand; and when the flow judgment result is negative, the heat utilization requirement exists.
It should be noted that, when the state detection result of the electronic valve 21 is the open state, the two methods can be used alternatively or simultaneously. When the two valves are used simultaneously, as long as one of the two conditions that the power supply of the hot end 4 is detected to be disconnected or the detected flow is smaller than the preset flow is met, whether the corresponding electronic valve 21 needs to be closed or not needs to be considered, so that the energy consumption is saved.
When the state detection result of the electronic valve 21 is a closed state, the electronic valve 21 connected to the sensing unit 11 is closed, so that the heat-carrying medium cannot flow through the flow meter in the sensing unit 11 through the electronic valve 21, and the flow rate per unit time detected by the flow meter is reduced, and the preset flow rate per unit time cannot be reached, that is, when the electronic valve 21 is in the closed state, the flow rate per unit time detected by the flow meter is also reduced, and therefore, it cannot be distinguished whether the flow rate per unit time is reduced due to the heat demand of the hot end 4 or the flow rate per unit time is reduced due to the closing of the electronic valve 21. Therefore, when the state detection result of the electronic valve 21 is in the closed state, the power supply detection sensor in the sensing unit 11 can only detect the on-off condition of the power supply of the heat end 4 connected with the sensing unit 11 to obtain a power supply detection result, and then a heat demand detection result is obtained according to the power supply detection result;
wherein, obtaining the heat demand detection result according to the power supply detection result may specifically include: judging whether the power supply of the heat end 4 connected with the sensing unit 11 in the power supply detection result is completely turned off;
when the power supply is completely turned off, no heat demand exists;
when the power supplies are not all off, then there is a demand for heat.
And S3, controlling the electronic valve 21 to be in an opening or closing state according to the state detection result and the heat demand detection result, and returning to the state of detecting the electronic valve 21 connected with the sensing unit 11 to obtain a state detection result.
Controlling the electronic valve 21 to be in an open or closed state according to the state detection result and the heat demand detection result, which may specifically include:
(1) when the state detection result is an open state and the heat demand detection result is yes, keeping the electronic valve 21 in an open state;
(2) when the state detection result is in an open state and the heat demand detection result is in a negative state, judging whether the time of no heat demand of the heat using end 4 is greater than or equal to a first preset time to obtain a time judgment result, and controlling the electronic valve 21 to be in the open or closed state according to the time judgment result;
in the above process, when the state detection result is the on state, it is mentioned that whether the hot end 4 has the heat demand or not can be determined by detecting the on/off condition of the power supply of the hot end 4 through the power supply detection sensor, and whether the hot end 4 has the heat demand or not can be determined by detecting the flow rate per unit time flowing through the flow meter, and then, when it is detected that the heat demand does not exist in the hot end 4 by adopting any one of the two methods, it is necessary to determine whether the time that the heat demand does not exist in the hot end 4 is greater than or equal to the first preset time or not. It should be noted that, in the present embodiment, the first preset time is different from the above different heat demand determination methods, and it is understood that, when it is detected by the power supply detection sensor that there is no heat demand in the hot side 4, it is determined whether the time when there is no heat demand in the hot side 4 is greater than or equal to a first preset time of the first preset times is T1, and when it is detected by the flow meter that there is no heat demand in the hot side 4, it is determined whether the time when there is no heat demand in the hot side 4 is greater than or equal to a first preset time of the first preset times is T2.
In this embodiment, controlling the electronic valve 21 to be in an open state or a closed state according to the time determination result may specifically include:
when the time judgment result shows that the time when the heat utilization end 4 has no heat utilization requirement is less than the first preset time, controlling the electronic valve 21 to be in an opening state;
otherwise, sending an instruction to the administrator and waiting for a second preset time, and if the administrator does not reply within the second preset time, closing the electronic valve 21;
and if the administrator replies within the second preset time, controlling the electronic valve 21 to be in an opening or closing state according to the replied opening or closing information.
The opening or closing information returned by the administrator includes closing the electronic valve 21, and further includes delaying for a certain time, for example, delaying for T4 seconds, i.e., waiting for T4 seconds before performing the corresponding operation.
(3) When the state detection result is in a closed state and the heat demand detection result is yes, controlling the electronic valve 21 to be in an open state;
(4) and when the state detection result is in a closed state and the heat demand detection result is no, keeping the electronic valve 21 in a closed state.
In order to further save the energy consumption of the boiler, when the electronic valves 21 on all the child nodes of the father node of a certain electronic valve 21 are closed, the corresponding electronic valve 21 on the father node is correspondingly closed.
The embodiment further provides a specific example to explain the solution of the embodiment, in order to save the heat energy of the boiler and determine whether to close the electronic valve 21 connected to the sensing unit 11 when the electronic valve 21 connected to the sensing unit 11 is in the open state.
After the boiler system is started for T5 time, the boiler characterization parameter TurnOfIgnore is 0; at this time, the control system 3 judges whether the power supply of the hot end 4 is completely turned off after the node of the sensing unit 11 through the sensing unit 11, and simultaneously judges whether the flow rate of the thermal medium with the node flow meter of the sensing unit 11 in unit time is lower than a system parameter value V1;
if the sensing unit 11 senses that the power supplies of all the hot end users 4 are all turned off, the control system 3 starts to time, and if the sensing unit 11 senses that the power supply of a certain hot end user 4 is turned on, the electronic valve 21 corresponding to the parent node of the sensing unit 11 node is not turned off within T1 seconds; otherwise, the control system 3 sends an instruction to the administrator and waits for a time T3, and if the administrator does not reply within a time T3, the electronic valve 21 corresponding to the parent node of the sensing unit 11 node is closed;
if the sensing unit 11 senses that the flow rate per unit time of the thermal medium passing through its flow meter is lower than the system parameter value V1, the controller starts timing without closing the electronic valve 21 corresponding to the parent node of the sensing unit 11 node within T2(T2> T1) seconds if the sensing unit 11 senses that the flow rate per unit time of the thermal medium passing through its flow meter is higher than the system parameter value V1; otherwise, the control system 3 sends an instruction to the administrator, waits for a time T3, and closes the electronic valve 21 corresponding to the parent node of the sensing unit 11 node if the administrator does not reply within a time T3;
when all brother node electronic valves 21 corresponding to the child nodes of the parent node of the previous stage are closed, closing the electronic valves 21 corresponding to the parent node of the previous stage;
during the boiler system on-time T5, the boiler characterizing parameter TurnOffIgnore (neglecting to close) is 1 (at which time the electronic valve 21 of the corresponding parent node is not closed even if the sensing unit 11 senses that the flow rate per unit time of the hot medium passing through its flow meter is lower than the system parameter value V1);
when the sensing unit 11 senses that the power supplies of all the hot end users 4 are turned off, the sensing unit 11 sends an instruction TurnOffValve to the control system 3 and attaches a parameter TurnOffReason (turn-off reason) of 0 to indicate that the sensing unit 11 sends the instruction TurnOffValve because the power supplies of all the hot end users 4 are turned off; when the command and the parameter are sent to the control system 3, the control starts to count, and within T1 seconds, if the sensing unit 11 senses that the power supply of a hot end 4 is turned on, the sensing unit 11 sends a turnoffvalcecancel command to the control system 3 with a parameter TurnOffReason ═ 0.
When the sensing unit 11 senses that the flow rate per unit time of the thermal medium passing through the flow meter of the sensing unit is lower than a system parameter value V1, an instruction TurnOffValve is sent to the control system 3 and a parameter TurnOffReason ═ 1 is attached to indicate that the sensing unit 11 sends the instruction TurnOffValve because the flow rate per unit time of the thermal medium passing through the flow meter of the sensing unit is too low. Within T2 seconds (T2 is the default parameter of the system) after sending the command and parameter to the control system 3, if the sensing unit 11 senses that the flow rate per unit time of the hot medium passing through its flow meter is higher than a system parameter value V2, the sensing unit 11 sends a turnoffvalcecanarce command to the control system 3 with a parameter TurnOffReason 1.
When the control system 3 receives the TurnOffValve command from the sensing unit 11 and the parameters attached thereto, the following algorithm is used to determine whether to close the electronic valve 21 corresponding to the sensing unit 11.
step 5, the control system 3 notifies the relevant administrator and sets the time of all countdown timers of the sensing unit 11 to T3 and proceeds to step 6;
step 6, before one of the countdown timers of the number 0 and the number 1 returns to zero, if the control system 3 receives a response of management, executing corresponding operation according to the following principle;
if the response of the administrator is an instruction for authorizing to close the electronic valve 21, the control system 3 closes the electronic valve 21 corresponding to the sensing unit 11, deletes all countdown timers of the sensing unit 11, and ends the algorithm;
if the administrator responds with a delay of T4 seconds, setting the time of all countdown timers of the sensing unit 11 to T4 and proceeding to step 7;
and 7, if the control system 3 does not receive the response of the administrator yet, the control system 3 closes the electronic valve 21 corresponding to the sensing unit 11, deletes all countdown timers of the sensing unit 11, and ends the algorithm.
A brief description of the TurnOffIgnore attribute mentioned for step 1 in the above algorithm is as follows: in the boiler economizer, each sensing system has a turnoffIgnore attribute, which is set to avoid the problem that the control system 3 mistakenly closes the corresponding electronic valve due to the TurnOffValve instruction of the sensing system when the boiler is just started because the flow is too low.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. An intelligent boiler energy-saving device, characterized in that the device includes: the system comprises a sensing system, an electronic valve system, a control system and a heat utilization end, wherein the sensing system and the electronic valve system are connected with the control system, the sensing system is connected with the electronic valve system, and the sensing system is connected with the heat utilization end;
the sensing system is used for detecting whether the heat utilization end has the heat utilization requirement, and when the heat utilization end has the heat utilization requirement, the control system controls the electronic valve system to be in an opening state; when the heat utilization end has no heat utilization requirement, the control system controls the electronic valve system to be in a closed state.
2. The apparatus of claim 1, wherein said electronic valve system comprises at least one electronic valve, and said sensing system comprises at least one sensing unit, each of said sensing units being connected to at least one hot terminal and one electronic valve.
3. The apparatus of claim 1, wherein the sensing unit comprises a power detection sensor; the power supply detection sensor is used for detecting the opening and closing condition of a power supply of the heat utilization end connected with the sensing unit, when the power supply of at least one heat utilization end connected with the sensing unit is closed, the heat utilization end is indicated to have a heat utilization requirement, otherwise, the heat utilization end does not have the heat utilization requirement.
4. The device of claim 3, wherein the sensing unit further comprises a flow meter, and the flow meter is configured to detect a flow rate per unit time of the hot medium flowing through the flow meter, and when the flow rate per unit time is less than or equal to a preset flow rate, it indicates that the hot end has no heat demand, otherwise, the hot end has a heat demand.
5. An intelligent boiler energy-saving method is characterized by comprising the following steps:
detecting the state of an electronic valve connected with a sensing unit to obtain a state detection result;
detecting whether a heat utilization end connected with the sensing unit has a heat utilization requirement or not through the sensing unit according to a state detection result to obtain a heat utilization requirement detection result;
and controlling the electronic valve to be in an opening or closing state according to the state detection result and the heat demand detection result, and returning to the state of detecting the electronic valve connected with the sensing unit to obtain a state detection result.
6. The method according to claim 5, wherein the detecting whether a heat demand exists at a heat consumption end connected to the sensing unit according to the state detection result and the sensing unit to obtain a heat demand detection result specifically comprises:
when the state detection result is in a closed state, a power supply detection sensor in the sensing unit detects the opening and closing condition of a power supply of a heat using end connected with the sensing unit to obtain a power supply detection result, and a heat using requirement detection result is obtained according to the power supply detection result;
when the state detection result is in an on state, a power supply detection sensor in the sensing unit detects the on-off condition of a power supply of a heat end connected with the sensing unit to obtain a power supply detection result, a heat demand detection result is obtained according to the power supply detection result and/or the flow of a medium with heat flowing through the flow meter in unit per unit time is detected through the flow meter in the sensing unit to obtain a detection flow, whether the detection flow is smaller than a preset flow is judged, a flow judgment result is obtained, and a heat demand detection result is obtained according to the flow judgment result.
7. The method according to claim 6, wherein obtaining a heat demand detection result according to the power supply detection result specifically comprises:
judging whether the power supply of the heat end connected with the sensing unit in the power supply detection result is completely turned off;
when the power supply is completely turned off, no heat demand exists;
when the power supplies are not all off, then there is a demand for heat.
8. The method according to claim 6, wherein the obtaining a heat demand detection result according to the flow judgment result specifically includes:
when the flow judgment result is yes, the heat utilization requirement does not exist;
and when the flow judgment result is negative, the heat utilization requirement exists.
9. The method according to claim 5, wherein the controlling the electronic valve to be in an open or closed state according to the state detection result and the heat demand detection result specifically comprises:
when the state detection result is in an opening state and the heat demand detection result is yes, keeping the electronic valve in an opening state;
when the state detection result is in an open state and the heat utilization requirement detection result is in a negative state, judging whether the time of no heat utilization requirement of the heat utilization end is greater than or equal to a first preset time to obtain a time judgment result, and controlling the electronic valve to be in the open or closed state according to the time judgment result;
when the state detection result is in a closed state and the heat demand detection result is yes, controlling the electronic valve to be in an open state;
and when the state detection result is in a closed state and the heat demand detection result is not in the closed state, keeping the electronic valve in the closed state.
10. The method according to claim 9, wherein the controlling the electronic valve to be in an open or closed state according to the time determination result specifically comprises:
when the time judgment result shows that the time when the heat utilization end has no heat utilization requirement is less than the first preset time, controlling the electronic valve to be in an opening state;
otherwise, sending an instruction to the administrator and waiting for a second preset time, and if the administrator does not reply within the second preset time, closing the electronic valve; and if the administrator replies within the second preset time, controlling the electronic valve to be in an opening or closing state according to the replied opening or closing information.
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