CN218721833U - Modular automatic control system suitable for various heat supply systems - Google Patents

Abstract

The utility model discloses a multiple heating system technical field's a modularization autonomous system suitable for multiple heating system, including host system and branch control module, host system includes host computer main control ware, branch control module includes air source heat pump control module, water source heat pump control module, single cold water-cooling water set control module, circulating water pump control module, cooling tower control module, energy storage control module, moisturizing level pressure control module, board-like heat transfer system and scrubbing module, realize the thought of the standardized module combination of automatic control according to different projects, carry out the split according to different kinds of equipment in the thermotechnical system and divide into groups, every group is as a module, the basic control procedure of each module is compiled as standardized design, only be the collocation combination of different modules to different project thermotechnical systems, each project automatic control system is according to the standardized module of thermotechnical system configuration, only need carry out a small amount of programming to project host system, coordinate each module to work each other.

Description

Modular automatic control system suitable for various heat supply systems

Technical Field

The utility model relates to a multiple heating system technical field specifically is a modularization autonomous system suitable for multiple heating system.

Background

The tooth planting machine is a machine for producing zippers, but the tooth planting machines in the current market are all of common motor structures, not only are the structures complex, but also the energy consumption is large, and therefore a modularized automatic control system suitable for various heating systems is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modularization autonomous system suitable for multiple heating system to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a modularization autonomous system suitable for multiple heating system, includes host system and branch control module, host system includes host computer main control ware, divide control module to include air source heat pump control module, water source heat pump control module, single cold water-cooling water set control module, circulating water pump control module, cooling tower control module, energy storage control module, moisturizing level pressure control module, plate heat transfer system and scrubbing module.

Further, host computer main control ware includes data acquisition module, sensor and control output module, set up the touch-sensitive screen on the host computer main control ware, and electric connection computer.

Furthermore, the main control module is connected with the sub-control modules in an RS485 communication mode, and the main controller of the upper computer is connected with the computer in an RS485 communication mode.

Furthermore, the air source heat pump control module comprises an air source heat pump control box, the air source heat pump control box is electrically connected with the air source heat pump, the inlet and outlet pipelines of the air source heat pump are provided with shutoff butterfly valves, and the single air source heat pump is provided with 4 machine heads.

Further, the water source heat pump control module includes water source heat pump control box, water source heat pump control box electric connection water source heat pump set, water source heat pump set passes through pipeline intercommunication evaporimeter and condenser, the water source heat pump set exit end sets up electronic shutoff butterfly valve, and the entry end sets up manual shutoff butterfly valve.

Further, single cold water-cooling water set control module includes the unit control box, unit control box electric connection single cold unit, single cold unit passes through pipeline intercommunication evaporimeter and condenser.

Further, circulating water pump control module includes the circulating pump, the circulating pump includes terminal circulating pump, coupling circulating pump, unit primary pump and cooling water pump, the both ends of circulating pump all set up pressure sensor and mechanical type manometer.

Furthermore, the cooling tower control module comprises a cooling tower, a regulating butterfly valve is arranged at a water path inlet end of the cooling tower, a water supplementing system and a fan frequency conversion control system are arranged on the cooling tower, and a shutoff valve is arranged at a water path outlet end of the cooling tower.

Furthermore, the energy storage control module comprises an open energy storage module and a closed energy storage module, wherein the open energy storage module comprises a water pool, an electric shutoff valve, a water pool inlet and outlet thermometer and a water pool inner thermometer; the closed energy storage module comprises a closed energy storage water tank, an electric shutoff valve, thermometers at an inlet and an outlet of the water tank and thermometers inside the water tank.

Furthermore, the water supplementing constant pressure control module comprises a softened water device, a softened water tank, a water supplementing pump, a constant pressure tank, an automatic pressure relief valve, manual shutoff valves for equipment maintenance, a water meter, a water drain valve and pipelines.

Further, the plate type heat exchange system comprises a plate exchanger, temperature sensors for an inlet and an outlet of the primary side and the secondary side, and an inlet and an outlet valve for the primary side and the secondary side, wherein the temperature sensors and the electric regulating valve are arranged on two sides of the plate exchanger.

Further, the scrubbing module includes the filter, the inside setting stainless steel filter screen of filter.

Compared with the prior art, the beneficial effects of the utility model are that: according to the idea of realizing the combination of the automatic control standardized modules according to different projects, the thermal engineering systems are divided and grouped according to different types of equipment, each group is used as a module, the basic control programs of the modules are compiled as standardized setting, the different project thermal engineering systems are only matched and combined with the different modules, the various project automatic control systems are provided with the standardized automatic control modules according to the combination of the thermal engineering systems, and only a small amount of programming is needed to be carried out on the project main control modules to coordinate the mutual work of the modules.

Drawings

FIG. 1 is a system architecture of the present invention;

fig. 2 shows an air source heat pump control module of the present invention;

FIG. 3 shows a water source heat pump control module according to the present invention;

FIG. 4 is a control module of the single-cooling water-cooling chiller of the present invention;

FIG. 5 shows a circulating water pump control module according to the present invention;

fig. 6 is a control module of the cooling tower of the present invention;

fig. 7 shows the open energy storage control module of the present invention;

FIG. 8 shows the closed energy storage control module of the present invention;

FIG. 9 is a diagram of a water-replenishing constant-pressure control module of the present invention;

FIG. 10 shows a plate heat exchange system of the present invention;

fig. 11 shows the decontamination module of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a modularization autonomous system suitable for multiple heating system, includes host system and branch control module, and host system includes host computer main control ware, and host system carries out work through the master control case, and the master control case is judged as the operating mode and the master control of mode switch possesses following function:

a. setting a target temperature:

1) The target temperature is automatically set after the system is powered on each time:

2) The target temperature is capable of changing settings and setting the limit conditions.

b. Adjustment of target temperature:

1) In winter: the method comprises the steps that a temperature difference (Tgc-Thc) of water supply and return of a monitoring system is taken as a basis, a deviation amount (Tgc-Thc-5) is taken as a basis, when a tail end circulating water pump runs at 50Hz for a certain time (1 hour, the time can be set), and the deviation amount is > +/-1 ℃, the temperature of a control target is increased by 1 ℃, a detection period (the value can be set) is taken within 30 minutes, and the method is continuously executed according to the logic; when the water pump is operated at 30Hz for a certain time (1 hour, the time can be set), and the deviation amount is less than-1 ℃, the control target temperature is reduced by 1 ℃, and the logic is continuously executed according to the logic, wherein the detection period (the value can be set) is within 30 minutes.

2) Summer: the monitoring system supplies the temperature difference of backwater (Tgc-Thc), regard 5 degrees of C temperature difference as the basis, the amount of deviation (Tgc-Thc-5), when the end circulating water pump has already been operated at 50Hz for certain time (1 hour, this time can be presumed), the amount of deviation is ++ 1 degrees of C, reduce the control goal temperature by 1 degrees of C, it is a detection cycle (this value can be presumed) within 30 minutes, continue to carry out according to this logic; when the water pump is operated at 30Hz for a certain time (1 hour, the time can be set), and the deviation amount is less than-1 ℃, the control target temperature is increased by 1 ℃, and the logic is continuously executed according to the logic, wherein the detection period (the value can be set) is within 30 minutes.

3) The outdoor temperature and the deviation amount can both control the system outlet water temperature (target temperature), and when contradiction occurs, the deviation amount is used as priority.

c. And issuing a mode switching instruction:

1) Winter season

The system preferentially adopts an air source heat pump direct supply mode, and is switched to a coupling heat supply mode when the direct supply can not meet the condition. When the coupling heat supply mode reaches a certain condition, switching to a direct supply mode; after the mode switching instruction is issued, the mode switching control box, the host control box, the pump set control box and the air source control box realize respective adjustment according to the opening and closing state of the valve equipment.

The project with heat storage stores heat in the valley electricity time period, the heat storage device is preferentially adopted to supply heat in the flat electricity time period, when the heat supply amount of the heat storage device can not meet the load demand, the air source heat pump direct supply is preferentially adopted as supplement, and when the direct supply can not meet the condition, the coupling heat supply mode is switched. When the coupling heat supply mode reaches a certain condition, switching to a direct supply mode; after the mode switching instruction is issued, the mode switching control box, the energy storage control box, the host control box, the pump set control box and the air source control box realize respective adjustment according to the opening and closing state of the valve equipment.

2) Summer season

The system preferentially adopts a centrifugal machine direct supply mode and is started according to the priority of the refrigeration efficiency of the centrifugal machine set; and when the direct supply can not meet the conditions, switching to a combined cooling mode of multiple units (air source and water cooling unit), and starting according to the priority of the refrigeration efficiency of the units. When the multi-unit combined supply mode reaches a certain condition, switching to a water cooling unit direct supply mode; after the mode switching instruction is issued, the mode switching control box, the host control box, the pump set control box and the air source control box realize respective adjustment according to the opening and closing state of the valve equipment.

The project with cold accumulation is used for cold accumulation in the valley electricity time period, the cold accumulation device is preferentially adopted for cold supply in the flat electricity time period, when the cold supply quantity of the cold accumulation device can not meet the load requirement, the water cooling unit is preferentially adopted for direct supply as supplement, and when the direct supply can not meet the condition, the combined cold supply mode of multiple units (air source and water cooling unit) is switched. When the multi-unit combined supply mode reaches a certain condition, switching to a water cooling unit direct supply mode; after the mode switching instruction is issued, the mode switching control box, the energy storage control box, the host control box, the pump set control box and the air source control box realize respective adjustment according to the opening and closing state of the valve equipment.

d. Energy efficiency optimization and giving an operation strategy as mode decision:

1) Winter season

Trial operation, finding out the optimal operation condition of the system:

in the coupling mode: and detecting and recording the comprehensive efficiency of the system in the coupling mode, changing the temperature of the air source heat pump outlet water in the coupling mode by taking 1 hour as a period, and detecting and calculating the comprehensive efficiency (total heat supply/total electricity consumption) of the system so as to determine the optimal coupling temperature of the system. The system Tlg c value reaches a set value Tlg, the system Tlg is operated for 1 hour, the comprehensive efficiency of the system in the time period is recorded, then the Tlg value is improved by 1 ℃, the operation mode is repeated until the Tlg value reaches 40 ℃, the comprehensive efficiency of the system in each time period is compared, and the optimal operation working condition is found out.

In the direct supply mode: detecting and recording the comprehensive efficiency of the system in the direct supply mode, changing the loading capacity (a plurality of machine heads) of a single air source heat pump in the direct supply mode on the basis of the current environmental temperature and humidity and the water supply target temperature by taking 1 hour as a period, and detecting and calculating the comprehensive efficiency (total heat supply capacity/total power consumption) of the system so as to determine the optimal loading capacity (the machine head opening quantity) of a single machine set of the system under the same working condition (the environmental temperature and humidity and the water supply target temperature in a certain range); when the outdoor environment temperature and humidity and the water supply target temperature are changed into basic conditions of another working condition, repeating the operation modes, comparing the highest point of the comprehensive efficiency of the system under each working condition, finding out the optimal loading capacity of a single unit under different working conditions, and using the optimal loading capacity as a preset instruction to guide the work of the air source heat pump module under the direct supply mode.

e. And communicating with each module:

1) Implementing and acquiring the running state and key point parameters of each module;

2) Acquiring alarm information of each module, and issuing a forbidden or reset instruction to the module generating the alarm;

3) Judging an issued instruction according to the optimal energy efficiency, and guiding the module to work;

4) And issuing an instruction according to the mode switching condition, and changing the current operation mode.

f. Collecting points:

1) The temperature of the system water supply;

2) The return water temperature of the system;

3) Total flow at the end side of the system.

The sub-control module comprises an air source heat pump control module, a water source heat pump control module, a single-cooling water chilling unit control module, a circulating water pump control module, a cooling tower control module, an energy storage control module, a water supplementing constant pressure control module, a plate type heat exchange system and a decontamination module, and monitors and controls related measuring points of each sub-control box respectively according to a pre-programmed control algorithm and state requirements given by the main controller to control related equipment to work.

The upper computer main controller comprises a data acquisition module, a sensor and a control output module, a touch screen is arranged on the upper computer main controller and is electrically connected with a computer, and the upper computer main controller is mainly responsible for controlling the running state, issuing instructions to each sub-control box and providing a necessary human-computer interaction interface; and the system is communicated with the upper cloud platform through a network interface.

The main control module is connected with the sub-control modules in an RS485 communication mode, and the main controller of the upper computer is connected with the computer in an RS485 communication mode.

Air source heat pump control module:

(1) The air source heat pump module is composed of an air source heat pump and an inlet and outlet shutoff butterfly valve;

(2) The single air source heat pump is provided with 4 machine heads, so that the heating (cold) starting and stopping of an air source heat pump system, the starting and stopping of a plurality of branch machines and the load shedding control of the single branch machine head can be realized;

(3) The air source heat pump control box includes: communicating with an air source heat pump, reading equipment parameters and controlling equipment; controlling an electric switch type valve at the outlet of the single air source heat pump;

(4) When the main control box issues a start to the air source control box and takes a target temperature as a control reference, the air source heat pump control box needs to operate according to the following principle:

1) Starting a control logic;

a) The main control box feeds back a command to prepare for starting the N # air source, the DVK-N of the N # air source branch is opened, and meanwhile, the valve opening state feedback is detected;

b) Detecting water flow signals and other unit alarm signals to ensure that a circulating pump (a heat source pump under a coupling working condition and a tail end pump once pump under a direct supply working condition) is started; and the air source is not in an alarm state;

c) When all the feedback signals are normal and the detection time reaches 30s, starting the air source equipment according to the instruction of the master control box;

2) Air source equipment loading and unloading:

a) Each air source of the system is divided into 4 gears, and the main control box performs 0-n (n =4 × the number of air sources) gear control according to requirements; when the air source heat pump unit is started, the main control box sends instructions to be started one by one, and after one hour, the main control box is started or closed for 1 gear one by one according to the system water supply temperature Tgc. When the deviation between Tgc and Tg exceeds-2 ℃ (the deviation value can be set), and the duration exceeds 15 minutes (the time can be set), increasing the starting gear 1, and otherwise, reducing the load gear 1; and (3) monitoring the actual gear number in real time, and automatically switching to a coupling heating mode when all gears are fully opened (n =4 times the number of air sources), the deviation between Tgc and Tg still exceeds-2 ℃, and the duration exceeds 1 hour (the time can be set). When the actual operation gear is 0 and the duration time exceeds 1 hour, the operation of the circulating water pump is stopped.

b) Particularly, when the energy efficiency priority of the local unit is 1 gear > 2 gear > 3 gear > 4 gear, a logic program must be compiled according to the following principle: if the master control box issues 8 gears, each compressor should be started at 1 gear instead of all 4 gears for 2 units.

c) And giving an instruction according to the main control box and starting according to a preset instruction under the current working condition according to the energy efficiency optimization trial calculation result of the main control box.

(5) Collecting and controlling points:

the point positions for monitoring in real time according to the requirements and giving remote open control are as follows:

a defrosting request of a single unit 1# to 4# machine heads;

the 1# to 4# machine heads of the single machine set are forbidden to be locked;

selecting the starting temperature of the water supply or the return water of a single unit;

limiting the maximum loading proportion of a single unit;

a single unit target temperature;

the environmental temperature and the environmental humidity of a single unit;

the exhaust pressure, the exhaust temperature, the fin temperature and the superheat degree corresponding to the 1# to 4# machine heads of the single machine set;

the suction pressure of a single unit;

and the supply and return water temperature of the air source branch.

(6) And (4) alarming:

water flow alarm of single unit;

the exhaust pressure corresponding to the 1# to 4# machine heads of the single machine set is alarmed;

the machine head temperature corresponding to the machine heads 1# to 4# of the single machine set is alarmed;

alarming by a single unit abnormal sensor;

and (5) alarming that the air suction pressure of the single unit is too low.

Water source heat pump control module:

(1) The water source heat pump module comprises a water source heat pump unit, an evaporator and a condenser, wherein an electric shutoff butterfly valve is arranged at the outlet of the evaporator and the condenser and is used as a mode switching valve during direct supply and combined supply, and a manual shutoff butterfly valve is arranged at the inlet of the evaporator and the condenser;

(2) The water source heat pump is provided with a plurality of machine heads, so that the heating (cold) start and stop of a coupling system, the start and stop of a plurality of machine units and the loading and unloading control of the machine heads of a single machine unit can be realized.

(3) The water source heat pump control box includes: communicating with a water source heat pump, reading equipment parameters and controlling equipment; controlling an electric switch type valve at the outlets of the evaporator and the condenser of the single water source heat pump; the electric adjusting valves at the outlets of the evaporators and the condensers of the water source heat pumps are controlled, and the adjustment is carried out according to the temperature difference value of the inlets and the outlets of the two evaporators within the range of +/-1 ℃.

(4) When the main control box issues a start to the water source heat pump control box and takes a target temperature as a control reference, the water source heat pump control box needs to operate according to the following principle:

1) Starting a control logic;

a) Before starting, judging a current operation mode to judge whether a unit starting condition is met;

b) The feedback command of the master control box is that the N # water source heat pump is started, the DVsr-N of the branch of the N # water source heat pump is opened, a single water source heat pump is opened completely, a plurality of water source heat pumps are adjusted according to the temperature difference value of the two water source heat pumps, and the feedback of the opening state of the valve is detected;

c) Detecting the water supply temperature at the evaporation side, and allowing the unit to be in a standby starting state when the starting condition of the water source heat pump unit is met;

d) Detecting water flow signals and other unit alarm signals, and determining that a heat source pump and a tail end pump (an energy storage pump in an energy storage mode) are started; the water source heat pump is not in an alarm state;

e) When all feedback signals are normal and the detection time reaches 30s, starting the water source heat pump equipment according to the instruction of the main control box;

2) Water source heat pump equipment loading and unloading:

and loading or unloading one by one according to the system water supply temperature Tgc, wherein the instruction given by each loading or unloading is 25% of the total loading capacity of the machine head. When the deviation between Tgc and Tg exceeds-2 ℃ (the deviation value can be set), and the duration exceeds 15 minutes (the time can be set), the loading is increased once, otherwise, the loading is reduced once; monitoring the actual load capacity in real time, and keeping the state to continuously operate when the deviation between Tgc and Tg still exceeds-2 ℃ when the water source heat pump is operated at full load; when the deviation dimension of Tgc and Tg value is greater than or equal to +2 deg.C and is maintained for a certain time of 30 min (said time can be set), the air source direct supply mode can be switched to.

3) And giving an instruction according to the main control box and starting according to a preset instruction under the current working condition according to the energy efficiency optimization trial calculation result of the main control box.

(5) Collecting and controlling points:

the point positions for monitoring in real time according to the requirements and giving remote open control are as follows:

the n # machine head of the single machine set is forbidden to be locked;

selecting the starting temperature of the water supply or the return water of a single unit;

limiting the maximum loading proportion of a single unit;

a single unit target temperature;

a single unit source side target temperature;

starting interval time of the n # machine heads of the single machine set.

(6) And (4) alarming:

water flow alarm of single unit;

the exhaust pressure corresponding to the n # machine head of the single machine set is alarmed;

the machine head temperature corresponding to the machine head n # of the single machine set is alarmed;

alarming by a single unit abnormal sensor;

alarming that the suction pressure of a single unit is too low;

and (4) alarming the oil level of the single unit.

The single-cooling water chilling unit control module comprises:

(1) The single cooling unit module comprises a single cooling unit, an evaporator and a condenser inlet and outlet valve (when the single cooling unit is provided with 1 unit, manual cut-off butterfly valves are arranged at the inlet and the outlet of the evaporator and the condenser;

(2) The single machine set is provided with a plurality of machine heads, and can realize cold supply start and stop, multi-station distribution number start and stop and single extension head load shedding control.

(3) The unit control box includes: communicating with the unit and reading equipment parameters and control equipment; controlling electric switch type valves at the outlets of the evaporator and the condenser of the single unit; the electric adjusting valves at the outlets of the evaporators and the condensers of the multiple units are controlled, and the adjustment is carried out according to the temperature difference value of the inlets and the outlets of the two evaporators within the range of +/-1 ℃.

(4) When the main control box issues a start to the unit control box and takes a target temperature as a control reference, the unit control box needs to operate according to the following principle:

4) Starting a control logic;

f) Before starting, judging a current operation mode to judge whether a unit starting condition is met;

g) The main control box feeds back a command that an N # unit is started, DVsr-N of branches of the N # unit is opened, a single unit is fully opened, a plurality of units are adjusted according to the temperature difference value of the two units, and the opening state feedback of the valve is detected;

h) Detecting data of each sensor, and allowing the unit to be in a standby starting state when the starting condition of the unit is met;

i) Detecting water flow signals and other unit alarm signals, and confirming that a primary pump and a tail-end pump (an energy storage pump in an energy storage mode) are started; the unit is not in the alarm state;

j) When all feedback signals are normal and the detection time reaches 30s, starting the unit equipment according to the instruction of the master control box;

5) Loading and unloading of the unit:

and loading or unloading one by one according to the system water supply temperature Tgc, wherein the instruction given by each loading or unloading is 25% of the total loading capacity of the machine head. When the deviation between Tgc and Tg exceeds +1 deg.C (the deviation value can be set), and the duration exceeds 15 min (the time can be set), the loading is increased once, otherwise, the loading is reduced once; monitoring the actual load capacity in real time, and when the existing unit runs at full load and the deviation between the Tgc value and the Tg value still exceeds +1 ℃, keeping the state to continuously run; when the deviation dimension of Tgc and Tg value is greater than or equal to-2 deg.C and is maintained for a certain period of 30 min (said time can be set), it can be converted into air source direct supply mode.

6) And giving an instruction according to the main control box energy efficiency optimization trial calculation result, and starting according to a preset instruction under the current working condition.

(5) Collecting and controlling points:

the point positions for monitoring in real time according to the requirements and giving remote open control are as follows:

the n # machine head of the single machine set is forbidden to be locked;

selecting the starting temperature of the water supply or the return water of a single unit;

limiting the maximum loading proportion of a single unit;

a single unit target temperature;

starting interval time of the n # machine heads of the single machine set.

(6) And (4) alarming:

water flow alarm of single unit;

the exhaust pressure corresponding to the n # machine head of the single machine set is alarmed;

the machine head temperature corresponding to the machine head n # of the single machine set is alarmed;

alarming by a single unit abnormal sensor;

warning that the suction pressure of a single unit is too low;

and (4) alarming the oil level of the single unit.

Circulating water pump control module:

the circulating water pump is divided into a tail end circulating pump, a coupling circulating pump, a unit primary side circulating pump, a cooling water pump, an energy storage water pump and an energy release water pump according to the using functions.

(1) The module comprises a circulating pump, a pump set outlet and inlet pressure sensor, a pump set outlet and inlet mechanical pressure gauge, a single water pump outlet switch butterfly valve and a single water pump inlet manual butterfly valve;

(2) The water pump is divided into a plurality of pump groups, and the adjustment of the number of the water pumps and the adjustment of the frequency of a single water pump can be realized:

(3) When the main control box issues a starting instruction to the water pump control box, the water pump control box needs to operate according to the following principle:

1) The water pump control box sends an instruction to a water pump needing to be started according to the control logic, and the water pump enters a preparation state; 2s after entering the preparation state, opening a water pump outlet valve DVb-, opening a corresponding water pump 30s after detecting a valve opening signal, and entering the running state after the water pump is opened; when the water pump control box sends an instruction to close a certain water pump according to the control logic, the water pump is stopped firstly, the water pump enters a preparation state, an outlet valve DVb-of the water pump is closed 5s after the water pump enters the preparation state, and the water pump enters a stop state.

2) And (3) water pump load and unload control:

1 end circulation pump

Monitoring the temperature difference of supply water and return water of the system, on the basis of the temperature difference of 5 ℃, increasing the frequency of the heating circulating water pump when the deviation amount (the temperature difference-5) > +1 ℃, and starting one water pump when the current frequency =50Hz and is maintained for a certain time (can be set); when the deviation is less than or equal to minus 1 ℃, reducing the frequency of the heating circulating water pump, and when the current frequency is less than or equal to 30Hz and the current frequency is maintained for a certain time (which can be set), turning off one water pump; when the temperature is less than-1 ℃ and less than or equal to +1 ℃, the water pump keeps the current running frequency.

2 coupling circulating pump

Monitoring the temperature difference of supply water and return water at the air source side of the system, on the basis of the temperature difference of 5 ℃, increasing the frequency of the coupled circulating water pump when the deviation amount (temperature difference-5) > +1 ℃, and starting one water pump when the current frequency =50Hz and is maintained for a certain time (can be set); when the deviation is less than or equal to minus 1 ℃, reducing the frequency of the coupled circulating water pump, and when the current frequency is less than or equal to 30Hz and is maintained for a certain time (which can be set), turning off one water pump; when the temperature is less than-1 ℃ and less than or equal to +1 ℃, the water pump keeps the current running frequency.

3 primary pump of unit

Monitoring the temperature difference of supply water and return water of an evaporator or a condenser of the unit, on the basis of the temperature difference of 5 ℃, increasing the frequency of a primary circulating water pump of the unit when the deviation amount (the temperature difference-5) > +1 ℃, and starting one water pump when the current frequency =50Hz and is maintained for a certain time (can be set); when the deviation is less than or equal to minus 1 ℃, reducing the frequency of the primary circulating water pump of the unit, and when the current frequency is less than or equal to 30Hz and is maintained for a certain time (which can be set), closing one water pump; when the temperature is less than-1 ℃ and less than or equal to +1 ℃, the water pump keeps the current running frequency.

4 Cooling water pump

Monitoring the temperature difference of supply water and return water of a condenser of the unit, on the basis of the temperature difference of 5 ℃, increasing the frequency of a primary circulating water pump of the unit when the deviation amount (the temperature difference-5) > +1 ℃, and starting one water pump when the current frequency =50Hz and is maintained for a certain time (can be set); when the deviation is less than or equal to minus 1 ℃, reducing the frequency of the primary circulating water pump of the unit, and when the current frequency is less than or equal to 30Hz and is maintained for a certain time (which can be set), closing one water pump; when the temperature is less than-1 ℃ and less than or equal to +1 ℃, the water pump keeps the current running frequency.

(4) Collecting and controlling points:

pressure at inlet and outlet of water pump, number of running water pumps and frequency.

(5) And (4) alarming:

and (5) alarming the current overload of the water pump.

A cooling tower control module:

(1) The cooling tower module comprises a cooling tower, a waterway inlet adjusting butterfly valve, a water supplementing system, a fan frequency conversion control and waterway outlet shutoff valve;

(2) The cooling tower can be divided into a single unit or a plurality of units, and the number adjustment and the frequency adjustment of a single fan or the on-off adjustment of a water channel can be realized:

(3) When the main control box issues a starting instruction to the cooling tower control box, the cooling tower control box needs to operate according to the following principle:

1) Firstly, opening a cooling tower water path valve DVL-, and determining that the cooling tower is opened 30s after a valve opening signal is detected;

2) And (3) cooling tower control:

water flow regulation: monitoring the return water temperature of the condenser of the host, when the temperature is less than or equal to 22 ℃ (the temperature can be manually set), adjusting the valve, gradually reducing the opening degree of the valve, adjusting the full opening degree by 10% each time, and waiting for 30 minutes each time (the time can be manually set); when the temperature is higher than 22 ℃ (the temperature can be manually set), the valve is adjusted, the opening degree of the valve is gradually increased, 10% of full opening degree is adjusted each time, and the time is waited for 30 minutes each time of adjustment (the time can be manually set).

Adjusting a fan: monitoring the return water temperature of the condenser of the host, and when the temperature is less than or equal to 35 ℃ (the temperature can be manually set), reducing the frequency of the fan, adjusting 5Hz each time, and waiting for 30 minutes each time (the time can be manually set); when the temperature is higher than 35 ℃ (the temperature can be set manually), the frequency of the fan is increased, 5Hz is adjusted each time, and 30 minutes is waited for each adjustment (the time can be set manually).

(4) Collecting and controlling points:

cooling tower fan frequency, water way valve open and close state.

(5) And (4) alarming:

and (5) alarming the cooling tower due to water shortage.

The energy storage control module comprises an open type energy storage module and a closed type energy storage module;

open energy storage module:

(1) The energy storage control module comprises an open type energy storage pool, electric shutoff valves (4 for mode switching), pool inlet and outlet thermometers and (a plurality of) thermometers in the pool;

(2) Heat accumulation and heat release control:

1) When the heat storage mode is started in the off-peak electricity period at night, the system is ensured to be in the coupling heat supply mode or the air source direct supply heat supply mode, when the system is in any heat supply mode, each electric valve is adjusted by the heat storage controller according to the opening and closing state table of the valve equipment, the feedback signal of each electric valve is detected, and when the valves are determined to be in the running state of the mode, the heat storage mode is started to run.

2) Monitoring and recording the temperature of the interior, the inlet and the outlet of the heat storage device in real time, and completing the heat storage mode when the temperature of the interior of the device is equal to the heat supply temperature of the unit and is not less than the heat supply target temperature; the system is switched to enter a front heating mode, and a heat storage controller adjusts a corresponding valve; when the time interval exceeds the valley electricity time interval, the mode is forcibly quitted and is switched to the mode before entering for heat supply, and the heat storage controller adjusts the corresponding valve.

3) Heat release mode: when the temperature is higher than the target heat supply temperature and is in a flat current period, the mode can be switched to, the heat storage controller adjusts each electric valve according to the opening and closing state table of the valve equipment and detects a feedback signal of each electric valve, and when the valves are determined to be in the operating state of the mode, the opening operation is finished.

4) And monitoring and recording the temperature inside, at the inlet and at the outlet of the heat storage device in real time. When the internal temperature of the device is less than or equal to the heat supply target temperature, the heat release mode is finished; the system is switched to enter a front heating mode, and a heat storage controller adjusts a corresponding valve.

(3) Cold accumulation and cold discharge control:

1) When the cold accumulation mode is started at the off-peak electricity period at night, the system is ensured to be in a multi-unit combined heat supply mode or a water-cooled centrifuge direct heat supply mode, when the system is in any heat supply mode, each electric valve is adjusted by the energy storage controller according to the opening and closing state table of the valve equipment, a feedback signal of each electric valve is detected, and when the valves are determined to be in the operating state of the mode completely, the cold accumulation mode finishes opening operation.

2) Monitoring and recording the temperature of the interior, the inlet and the outlet of the cold accumulation device in real time, and completing the cold accumulation mode when the temperature of the interior of the device is equal to the cooling temperature of the unit and is less than or equal to the cooling target temperature; the system is switched to enter a front cooling mode, and the corresponding valve is adjusted by the energy storage controller; when the time interval exceeds the valley electricity time interval, the mode is forcibly quitted and is converted into a mode before entering for cooling, and the energy storage controller adjusts the corresponding valve.

3) A cooling mode: when the temperature is less than the target temperature of cooling and in the period of flat electricity, the mode can be switched to, the energy storage controller adjusts each electric valve according to the opening and closing state table of the valve equipment and detects the feedback signal of each electric valve, and when the valves are determined to be in the operating state of the mode, the opening operation is finished.

4) And monitoring and recording the temperature inside, at the inlet and at the outlet of the cold accumulation device in real time. When the internal temperature of the device is more than or equal to the target temperature of cooling, the cooling mode is finished; the system is switched to enter a front cooling mode, and the corresponding valve is adjusted by the energy storage controller.

(4) Valve switching

(5) Collecting points:

internal temperature, inlet temperature and outlet temperature of energy storage device

Closed energy storage module:

(1) The energy storage control module comprises a closed energy storage water tank, electric shutoff valves (4 for mode switching), thermometers at the inlet and the outlet of the water tank and thermometers (a plurality of thermometers) inside the water tank;

(2) Heat accumulation and heat release control:

1) When the heat storage mode is started in the off-peak electricity period at night, the system is ensured to be in the coupling heat supply mode or the air source direct supply heat supply mode, when the system is in any heat supply mode, each electric valve is adjusted by the heat storage controller according to the opening and closing state table of the valve equipment, the feedback signal of each electric valve is detected, and when the valves are determined to be in the running state of the mode, the heat storage mode is started to run.

2) Monitoring and recording the temperature of the interior, the inlet and the outlet of the heat storage device in real time, and completing the heat storage mode when the temperature of the interior of the device is equal to the heat supply temperature of the unit and is not less than the heat supply target temperature; the system is switched to enter a front heating mode, and a heat storage controller adjusts a corresponding valve; when the time interval exceeds the valley electricity time interval, the mode is forcibly quitted and is switched to the mode before entering for heat supply, and the heat storage controller adjusts the corresponding valve.

3) Heat release mode: and detecting the internal temperature of the heat storage device, when the temperature is higher than the heat supply target temperature and is in a flat time period, switching to the mode, adjusting each electric valve by the heat storage controller according to the opening and closing state table of the valve equipment by the heat storage controller, detecting a feedback signal of each electric valve, and completing opening operation after determining that all the valves are in the operation state of the mode.

4) And monitoring and recording the temperature inside, at the inlet and at the outlet of the heat storage device in real time. When the internal temperature of the device is less than or equal to the heat supply target temperature, the heat release mode is finished; the system is switched to enter a front heating mode, and a heat storage controller adjusts a corresponding valve.

(3) Cold accumulation and cold discharge control:

1) When the cold accumulation mode is started at the off-peak electricity period at night, the system is ensured to be in a multi-unit combined heat supply mode or a water-cooled centrifuge direct heat supply mode, when the system is in any heat supply mode, each electric valve is adjusted by the energy storage controller according to the opening and closing state table of the valve equipment, a feedback signal of each electric valve is detected, and when the valves are determined to be in the operating state of the mode completely, the cold accumulation mode finishes opening operation.

2) Monitoring and recording the temperature of the interior, the inlet and the outlet of the cold accumulation device in real time, and completing the cold accumulation mode when the temperature of the interior of the device is equal to the cooling temperature of the unit and is less than or equal to the cooling target temperature; the system is switched to enter a front cooling mode, and the corresponding valve is adjusted by the energy storage controller; when the time interval exceeds the valley electricity time interval, the mode is forcibly quitted and is converted into a mode before entering for cooling, and the energy storage controller adjusts the corresponding valve.

3) A cooling mode: when the temperature is less than the target temperature of cooling and in the period of flat electricity, the mode can be switched to, the energy storage controller adjusts each electric valve according to the opening and closing state table of the valve equipment and detects the feedback signal of each electric valve, and when the valves are determined to be in the operating state of the mode, the opening operation is finished.

4) And monitoring and recording the temperature inside, at the inlet and at the outlet of the cold accumulation device in real time. When the internal temperature of the device is more than or equal to the target cooling temperature, the cooling mode is finished; the system is switched to enter a front cooling mode, and the corresponding valve is adjusted by the energy storage controller.

(4) Valve switching

(5) Collecting points:

the internal temperature of the energy storage device, the inlet temperature and the outlet temperature.

Water supplement constant pressure control module:

(1) The water supplementing and pressure stabilizing module comprises a softened water device, a softened water tank, a water supplementing pump, a pressure stabilizing tank, an automatic pressure relief valve, a manual shutoff valve for overhauling each device, a water meter, a water drain valve and a pipeline;

(2) The starting and stopping conditions of the water supplementing and pressure stabilizing device are set according to the inlet pressure of a circulating water pump (a tail end circulating pump and a coupling circulating pump) of the system, and can be realized by an upper limiting electric connection meter, a lower limiting electric connection meter and a pressure sensor through a controller;

(3) When the pressure of the water pump inlet is lower than the lower limit set pressure value, the water supplementing system is automatically operated, and when the pressure of the water pump inlet reaches the upper limit set pressure value, the water supplementing system is stopped to operate;

(4) The water softening device is communicated with the control box through 485 data, and parameters such as alarm and running state of the water softening device are read;

the water replenishing device is provided with a pressure relief valve, and when the pressure of the system is over-pressure, the pressure is automatically relieved through the mechanical pressure relief valve.

Plate heat exchange module:

(1) Plate heat transfer system: the plate type heat exchange module comprises a plate exchanger (a single group or a plurality of groups), primary side and secondary side inlet and outlet temperature sensors, primary side and secondary side inlet and outlet valves (generally manual valves, when the tail end is divided into a plurality of paths for supply, an electric regulating valve can be arranged at the primary side inlet to regulate water flow and match tail end load);

(2) The plate heat exchange system is provided with temperature sensors on both sides of the plate heat exchange;

electric regulating valves are arranged on two sides of the plate exchanger, so that the flow of each group of plates under the configuration can be regulated, and the opening of the valve can be regulated according to the temperature difference.

The decontamination module:

(1) The treated water enters the filter body through the water inlet, impurities in the water can be intercepted on the stainless steel filter screen, when the impurities are accumulated to a certain degree, the pressure difference between the inner side and the outer side of the filter screen reaches a set value (less than or equal to 0.05 MPa), the drain valve is opened, the steering valve is closed, and the dirt remover begins to drain dirt;

(2) The collection point is the pressure at the two sides of the dirt separator;

(3) The control point is a drain valve at the bottom of the dirt separator;

when the pressure difference exceeds the upper limit set value, an alarm is needed to prompt that the pipeline is seriously blocked.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a modularization autonomous system suitable for multiple heating system, includes host system and branch control module, its characterized in that: the main control module comprises an upper computer main controller, the sub-control module comprises an air source heat pump control module, a water source heat pump control module, a single-cooling water chilling unit control module, a circulating water pump control module, a cooling tower control module, an energy storage control module, a water supplementing constant-pressure control module, a plate type heat exchange system and a decontamination module, the upper computer main controller comprises a data acquisition module, a sensor and a control output module, a touch screen is arranged on the upper computer main controller, the upper computer main controller is electrically connected with a computer, the main control module is connected with the sub-control module in an RS485 communication mode, and the upper computer main controller is connected with the computer in an RS485 communication mode.

2. A modular autonomous system for diverse heating systems according to claim 1, characterized in that: the air source heat pump control module comprises an air source heat pump control box, the air source heat pump control box is electrically connected with an air source heat pump, the air source heat pump inlet and outlet pipelines are all provided with a turn-off butterfly valve, and the air source heat pump is provided with 4 machine heads.

3. A modular autonomous system for diverse heating systems according to claim 1, characterized in that: the water source heat pump control module comprises a water source heat pump control box and is electrically connected with the water source heat pump unit, the water source heat pump unit is communicated with the evaporator and the condenser through a pipeline, the outlet end of the water source heat pump unit is provided with an electric turn-off butterfly valve, and the inlet end of the water source heat pump unit is provided with a manual turn-off butterfly valve.

4. The modular automation system of claim 1, wherein the system further comprises: the single-cooling water chilling unit control module comprises a unit control box, wherein the unit control box is electrically connected with the single-cooling unit, and the single-cooling unit is communicated with the evaporator and the condenser through a pipeline.

5. A modular autonomous system for diverse heating systems according to claim 1, characterized in that: the circulating pump control module comprises a circulating pump, the circulating pump comprises a tail end circulating pump, a coupling circulating pump, a unit primary pump and a cooling water pump, and pressure sensors and mechanical pressure gauges are arranged at two ends of the circulating pump.

6. A modular autonomous system for diverse heating systems according to claim 1, characterized in that: the cooling tower control module comprises a cooling tower, a water path inlet end of the cooling tower is provided with an adjusting butterfly valve, a water supplementing system and a fan frequency conversion control system are arranged on the cooling tower, and a water path outlet end of the cooling tower is provided with a shutoff valve.

7. A modular autonomous system for diverse heating systems according to claim 1, characterized in that: the energy storage control module comprises an open energy storage module and a closed energy storage module, wherein the open energy storage module comprises a water pool, an electric shutoff valve, a water pool inlet and outlet thermometer and a water pool internal thermometer; the closed energy storage module comprises a closed energy storage water tank, an electric shutoff valve, thermometers at an inlet and an outlet of the water tank and thermometers inside the water tank.

8. The modular automation system of claim 1, wherein the system further comprises: the water supplementing constant pressure control module comprises a water softening device, a water softening tank, a water supplementing pump, a constant pressure tank, an automatic pressure relief valve, manual shutoff valves for equipment maintenance, a water meter, a water drain valve and pipelines.

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