CN201909392U - Public construction heat-supply energy-saving device - Google Patents
Public construction heat-supply energy-saving device Download PDFInfo
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- CN201909392U CN201909392U CN2010206668767U CN201020666876U CN201909392U CN 201909392 U CN201909392 U CN 201909392U CN 2010206668767 U CN2010206668767 U CN 2010206668767U CN 201020666876 U CN201020666876 U CN 201020666876U CN 201909392 U CN201909392 U CN 201909392U
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Abstract
The utility model relates to a public construction heat-supply energy-saving device, which includes an automatic control part and a pipeline component part; the pipeline component part comprises a bypass pipeline connected in parallel on a water supply pipeline; on the bypass pipeline, a confluent type electric three-way adjusting valve, a pipeline pump and a ball valve are sequentially mounted in the water flow direction; through the combination of the automatic control technique and the heat-supply energy-saving device, a PLC adjusts a PID output parameter according to the outdoor temperature; and the valve opening degree, the electric three-way adjusting valve and the pipeline pump are controlled by 4-20 mA current signals. The utility model has benefits as follows: the temperature control on a public construction can be realized by adjusting the water supply and the return water mixing proportion, so as to achieve the energy-saving purpose; and the device has the advantages of simple and compact structure and stable performance, can be improved on the basis of the present equipment, the invested capital is less, and the device is suitable for wide application and popularization.
Description
Technical field
The utility model relates to the heating equipment technical field, particularly a kind of Gongjian's heating energy-saving device.
Background technology
At present, public buildings such as school, shop, office building, its heating system energy consumption is equivalent to about the twice of common private residence, and Gongjian's heat supply has certain particularity: need heating supply by day as office building, and evening, weekend and festivals or holidays except that the operator on duty substantially without heating supply; School daytime needs heating supply, and only concentrate at night with heat the students' dormitory, have again winter and summer vacation, festivals or holidays all substantially need not heat etc. characteristics, and existing heating system does not possess ability of regulation and control, in the constant temperature heating of whole heating season, exists huge energy waste.
Energy-saving and cost-reducing is the major issue that present heating industry faces.Gongjian's heat supply of present stage is in steady state substantially, has huge energy-saving potential, need not the characteristics of constant temperature heat supply in 24 hours with regard to public building.Implement the transformation of Gongjian's heating energy-saving,, carry out the science regulation and control, realize temperature control, to reach purpose of energy saving to public building by automatic control technology and the equipment of using for reference domestic and international advanced person.
Summary of the invention
The purpose of this utility model is exactly at heating system the problems referred to above, design a kind of energy-saving technical scheme, make Gongjian's heating system possess ability of regulation and control, heating system can be according to the operating position of heat supply user, dynamically adjust thermal source and distribute, change the present situation that there is energy waste in present Gongjian's heating system.
The utility model is to realize by such technical scheme: a kind of Gongjian's heating energy-saving device, it is characterized in that, and comprise automatic control section and pipe element part;
Described automatic control section comprises instrument switch board, PLC and host computer;
Pipe element partly is to be made of a bypass duct that is connected in parallel on the water supply line; On described bypass duct, confluent type electric three passes control valve, tubing pump and ball valve are installed successively by water (flow) direction; Two nodes of bypass duct and water supply line formation in parallel are equipped with butterfly valve on one section water supply line between two nodes;
Comprise water inlet, delivery port and water return outlet on the described electric three passes control valve valve body; Wherein water inlet and delivery port are connected on the described bypass duct by flange; Water return outlet connects a return branch that is connected with water return pipeline by flange; Ball valve is installed on the return branch;
The electric three passes control valve is mixed into the current of water supply line and two kinds of temperature of water return pipeline in the current of the third temperature; The electric three passes control valve is the confluent type structure.
Described electric three passes control valve is made of electric operator and three-way control valve; Electric operator is by 4～20mA current signal by-pass valve control aperture; By valve position feedback, can improve degree of regulation;
Described electric three passes control valve is connected with the programmable controller PLC of instrument switch board;
Described programmable controller PLC comprises CPU module, analog quantity input and output module, digital quantity input and output module;
Gather outdoor temperature and pipeline water temperature by the PT100 thermal resistance; The PT100 thermal resistance inserts analog quantity input and output module by temperature transmitter; The CPU module is carried out its PID function by programming and performing a programme, and 4～20mA current signal output end of analog quantity input and output module connects electric three passes control valve signal input part, by 4～20mA current signal by-pass valve control aperture; Electric operator valve position feedback signal inserts 4～20mA current signal input of analog quantity input and output module simultaneously; By carrying out proportional integral, differential (PID) regulatory function that the CPU modular program is calculated, improve degree of regulation;
Come control figure amount input and output module output switching value signal by the program in the CPU module, and control the unlatching of tubing pump and electrical ball valve through auxiliary reclay;
The CPU module connects the GPRS module by RS232 or RS485 communication interface, sends to the remote control center management system by the GPRS mode;
The CPU module according to control data, is adjusted the operational factor that heat supply energy-saving control system is set by the control data of GPRS mode receiving remote control centre management system;
By communication interface on the CPU module, the CP 5611 that connects in the host computer with communication cable blocks; Communicate by letter with host computer by CP 5611 cards;
Host computer is installed configuration software, editor and operation configuration software, and configuration software is realized the screen window Monitoring and Controlling, water distribution technology picture and test operation picture show with numeral, bar graph mode respectively, by MCGS configuration software automatic report generation; Computer transfers to the digital input module of PLC with the program of setting, by digital quantity output module output switching value signal controlling tubing pump, electrical ball valve, magnetic valve, auxiliary reclay, indicator lamp and the motor starter of PLC;
The described electric three passes control valve control instrument of also can adjusting by the PID with the instrument switch board is connected;
The adjust input type of control instrument of described PID is chosen as thermal resistance: the PID control instrument resistance signal input of adjusting connects the PT100 thermal resistance, gathers outdoor temperature by the PT100 thermal resistance; Adjust the PID control instrument parameter of adjusting according to outdoor temperature; Adjust 4～20mA current signal output end of control instrument of PID connects electric three passes control valve signal input part, by 4～20mA current signal by-pass valve control aperture; Simultaneously electric operator valve position feedback signal inserts adjust 4～20mA current signal input of control instrument of PID; By instrument proportional integral, differential (PID) regulatory function, improve degree of regulation;
The utility model is by using automatic control technology and the combination of heating energy-saving device, and PLC adjusts the PID output parameter according to outdoor temperature; By 4～20mA current signal by-pass valve control aperture, control electric three passes control valve, tubing pump, its beneficial effect is: supply water and the backwater mixed proportion by adjusting, carry out the science regulation and control, realize the temperature control to public building, to reach purpose of energy saving; Described apparatus structure is simple, stable performance, and compact conformation can be transformed on the existing equipment basis and forms, and it is less to inject capital into, and is suitable for using widely and promoting.
Description of drawings
Fig. 1 is the road member part schematic diagram of Gongjian's heating energy-saving device;
Fig. 2 is a remote control center management system software flow chart;
Fig. 3 is Gongjian's heating energy-saving apparatus control program flow chart.
Among the figure: 1. water supply line, 2. water return pipeline, 3. bypass duct, 4. return branch 5. is electronic
Three-way control valve, 6. tubing pump, 7, electrical ball valve, 8. butterfly valve.
The specific embodiment
Understand the utility model for clearer, describe the utility model in conjunction with the accompanying drawings and embodiments in detail:
As shown in Figure 1, the pipe element of described heating energy-saving device partly is to be made of a bypass duct 3 that is connected in parallel on the water supply line 1;
On described bypass duct 1, a confluent type electric three passes control valve 5, a tubing pump 6 and an electrical ball valve 7 are installed successively by water (flow) direction; Bypass duct 3 and water supply line 1 parallel connection form two nodes, on one section water supply line butterfly valve 8 are installed between two nodes;
Comprise water inlet, delivery port and water return outlet on described electric three passes control valve 5 valve bodies; Wherein water inlet and delivery port are connected on the described bypass duct 3 by flange; Water return outlet connects a return branch 4 that is connected with water return pipeline 2 by flange; An electrical ball valve 7 is installed on the return branch 4;
Electric three passes control valve 5 is mixed into the current of two kinds of temperature in water supply line 1 and the water return pipeline 2 in the current of the third temperature;
Gongjian's heating energy-saving device operation principle is: in working hour, gather outdoor temperature by the PT100 thermal resistance by day; Adjust the PID control instrument parameter of adjusting according to outdoor temperature; Adjust 4～20mA current signal output end of control instrument of PID connects electric three passes control valve signal input part, by 4～20mA current signal by-pass valve control aperture; By instrument proportional integral, differential (PID) regulatory function, improve degree of regulation;
Outdoor temperature is uploaded to control cabinet by temperature sensor, regulates through PID, and output signal control triple valve is opened, and when outdoor temperature was higher, supply water temperature reduced relatively, and triple valve was opened and strengthened this moment, and backwater sucks the amount that supplies water by tubing pump to be increased.Supply water temperature reduces; When outdoor temperature reduced, triple valve was opened and is diminished, and the amount that backwater is sneaked into water supply reduces, and supply water temperature improves.Realize supply water temperature control automatically, guarantee that room temperature is a steady temperature with outdoor temperature.At night or public holiday, festivals or holidays, system enters automatically and controls set condition at times, keeps bigger open degree, increases to mix the water yield, reduces supply water temperature, keeps lower room temperature, to reach energy saving purposes.
Programmable controller selects the S7-200 series of PLC; Comprise that the CPU module is S7-224, analog quantity input, output module EM235 and digital quantity input, output module EM223; The homemade wireless DTU of Lan Di that leads of GPRS module produces LDG6000;
Its system group network structure of GPRS module LDG6000 comprises:
1, the center public network is fixing IP: the control point directly initiates to connect to the center, and reliable stablizing recommended this kind scheme.
2, center public network dynamic IP+dns resolution service: the client gets in touch with DNS service provider earlier and opens DDNS, and the control point adopts the domain name addressing system to connect earlier
Dns server finds center public network dynamic IP by dns server again, connects.This kind mode can be saved the fixedly expense of IP of public network greatly, but stability is limited by the stable of dns server, so will seek reliable DNS service provider.This kind scheme is fit to small-scale application.
3, Call center adopts privately owned fixed ip address by the 2M APN access via telephone line GPRS of a commmunication company network between both sides' dlsw router
4, carry out wide area and connect, between GGSN and commmunication company's dlsw router, adopt the GRE tunnel.Adopt End to End Encryption between portable terminal and the server platform, avoid information possible leakage in whole transmission course.Both sides adopt fire wall to isolate, and carry out IP address and ports filter on fire wall.
This kind scheme is suitable for the higher applied environment of security requirement, and its stability is not so good as fixedly IP.
Present embodiment selects scheme 1.
The PT100 thermal resistance is gathered outdoor temperature and pipeline water temperature; The PT100 thermal resistance is transformed to 4～20mA current signal by temperature transmitter with resistance signal; Insert analog quantity input, output module EM2354～20mA current signal input again;
Comprise that the CPU module is S7-224, analog quantity input, output module EM235 and digital quantity input, output module EM223; The homemade wireless DTU of Lan Di that leads of GPRS module produces LDG6000;
The CPU module is that S7-224 passes through programming and performing a programme, carries out its PID function, and 4～20mA current signal output end of analog quantity input, output module EM235 connects electric three passes control valve signal input part, by 4～20mA current signal by-pass valve control aperture; 4～20mA current signal input of while electric operator valve position feedback signal access module EM235; Proportional integral, differential (PID) regulatory function by the CPU modular program is calculated improve degree of regulation;
Come the input of control figure amount, output module EM223 output switching value signal, the unlatching of control tubing pump and electrical ball valve by the program in the CPU module;
CPU module S7-224 connects GPRS module LDG6000 by RS232 or RS485 communication interface, sends to the remote control center management system by the GPRS mode;
CPU module S7-224 according to control data, adjusts the operational factor that heat supply energy-saving control system is set by the control data of GPRS mode receiving remote control centre management system;
Embodiment: about 1,500,000 m of Gongjian in the heat supply zone
2If, can realize that Gongjian independently uses heat, install energy-saving control device additional, calculate Gongjian's heating index q=44W/m with energy-conservation 20%
2
q H＝
q c·
H c·
η 1·
η 2/(24·
Z)
44＝
q c×8.14×10
3×0.85×0.65/(24×130)
q c＝30.53kg/m
2
In the formula
q c---constructure heating consumption coal index k g/m
2Standard coal;
Z---days of heating period (d) Efficiency in Buildings in Tianjin Area is got 130d;
Q H---Gongjian's heat consumption of building index is 44W/m
2
H c---the standard coal calorific value, get 8.14 * 10
3Wh/kg;
η 1---outdoor pipe network transfer efficiency, get 0.85;
η 2---boiler operating efficiency, get 0.6.
Can save energy 25% after the energy-conservation inlet device operation
Heating coal consumption index
q C2=30.53 * (1-0.25)=22.90kg/m
2,
100m
2Gongjian is to mark 870 yuan of/ton calculating of coal: 100*(30.53-22.90) * 10000/1000*870=664 is ten thousand yuan.
Practice shows that Gongjian's energy saver operation back energy-saving effect is obvious, if promote the whole city, benefit is more considerable.
Claims (2)
1. Gongjian's heating energy-saving device is characterized in that, comprises automatic control section and pipe element part; Described automatic control section comprises instrument switch board, PLC and host computer; Described pipe element partly is to be made of a bypass duct that is connected in parallel on the water supply line; On described bypass duct, confluent type electric three passes control valve, tubing pump and ball valve are installed successively by water (flow) direction; Two nodes of bypass duct and water supply line formation in parallel are equipped with butterfly valve on one section water supply line between two nodes; Comprise water inlet, delivery port and water return outlet on the described electric three passes control valve valve body; Wherein water inlet and delivery port are connected on the described bypass duct by flange; Water return outlet connects a return branch that is connected with water return pipeline by flange; Ball valve is installed on the return branch; The electric three passes control valve is the confluent type structure; Described electric three passes control valve is made of electric operator and three-way control valve; Electric operator is by 4～20mA current signal by-pass valve control aperture; Described electric three passes control valve is connected with the programmable controller PLC of instrument switch board; Described programmable controller PLC comprises CPU module, analog quantity input and output module, digital quantity input and output module; Gather outdoor temperature and pipeline water temperature by the PT100 thermal resistance; The PT100 thermal resistance inserts analog quantity input and output module by temperature transmitter; 4～20mA current signal output end of analog quantity input and output module connects electric three passes control valve signal input part, and electric operator valve position feedback signal inserts 4～20mA current signal input of analog quantity input and output module; The CPU module connects the GPRS module by RS232 or RS485 communication interface; Communication interface on the CPU module, the CP 5611 that connects in the host computer with communication cable blocks; Communicate by letter with host computer by CP 5611 cards.
2. Gongjian's heating energy-saving device according to claim 1 is characterized in that, described electric three passes control valve is connected by the control instrument of adjusting of the PID with the instrument switch board; The adjust input type of control instrument of described PID is chosen as thermal resistance: the PID control instrument resistance signal input of adjusting connects the PT100 thermal resistance; Adjust 4～20mA current signal output end of control instrument of PID connects electric three passes control valve signal input part, and electric operator valve position feedback signal inserts adjust 4～20mA current signal input of control instrument of PID.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206668767U CN201909392U (en) | 2010-12-20 | 2010-12-20 | Public construction heat-supply energy-saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206668767U CN201909392U (en) | 2010-12-20 | 2010-12-20 | Public construction heat-supply energy-saving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201909392U true CN201909392U (en) | 2011-07-27 |
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ID=44301593
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206668767U Expired - Fee Related CN201909392U (en) | 2010-12-20 | 2010-12-20 | Public construction heat-supply energy-saving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201909392U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006440A (en) * | 2013-02-26 | 2014-08-27 | 林秀麟 | Heat metering device with duty flow function |
| CN108253506A (en) * | 2018-01-04 | 2018-07-06 | 河北绿源地热能开发有限公司 | A kind of new energy integrated system based on operational research theory |
-
2010
- 2010-12-20 CN CN2010206668767U patent/CN201909392U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006440A (en) * | 2013-02-26 | 2014-08-27 | 林秀麟 | Heat metering device with duty flow function |
| CN108253506A (en) * | 2018-01-04 | 2018-07-06 | 河北绿源地热能开发有限公司 | A kind of new energy integrated system based on operational research theory |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110727 Termination date: 20191220 |