CN106652744A - Central heating comprehensive experiment system - Google Patents
Central heating comprehensive experiment system Download PDFInfo
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- CN106652744A CN106652744A CN201611055739.8A CN201611055739A CN106652744A CN 106652744 A CN106652744 A CN 106652744A CN 201611055739 A CN201611055739 A CN 201611055739A CN 106652744 A CN106652744 A CN 106652744A
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- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
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Abstract
The invention discloses a central heating comprehensive experiment system. The central heating comprehensive experiment system comprises a primary network system, The primary network system comprises a first oil burning boiler, a second oil burning boiler, a water separator, a tubular heat exchanger, a first plate type heat exchanger, a second plate type heat exchanger, a water collector, a primary network circulating water pump, a primary network make-up pump, a primary network expansion tank and a softening water compensator. The central heating comprehensive experiment system also comprises a secondary network system comprising a heat utilization terminal device, a secondary network circulating water pump, a secondary network make-up pump and a secondary network expansion tank, and the heat utilization terminal device comprises a three-user branch and a five-user branch. According to the invention, students can be more familiar with the process flow of the central heating system, and can know functions and effects of key equipment, and can master the adjust and control principle and the operation strategy.
Description
Technical field
The present invention relates to a kind of central heating comprehensive experimental system, belongs to Practical Teaching Platform.
Background technology
Central heating is the important heat energy application system of China's severe cold, cold district civil buildings, and real system is due to rule
Mould is big, distribution is wide, and not enough intuitively, student only will appreciate that operation principle substantially and process, can seldom participate in system debug, fortune
The practices such as row regulation, thus can not well grasp operation and the control method of specification.It is existing with regard to Heat Supply Engineering
The model equipment that experimental system multidigit simplifies, or software emulation demo system, it is impossible to true reflection key equipment maneuverability
Can, system condition adjust change, and it is larger with real system deviation to constitute structure, it is impossible to very well the training of adaptation process capability and
Form.Therefore a set of central heating comprehensive experimental system is developed to improve students ' practical ability and engineering actual operational capacity seems pole
For important.
The content of the invention
For the deficiency in the presence of prior art, the invention provides a kind of central heating comprehensive experimental system, makes
Central heating system is familiar with life, to improve the operational capacity to central heating system.
For achieving the above object, present invention employs following technical scheme：A kind of central heating comprehensive experimental system, its
It is characterised by, including：
Once net system, it has the first oil burning boiler, the second oil burning boiler, water knockout drum, pipe heat exchanger, first board-like
Heat exchanger, the second plate type heat exchanger, once water collector, net water circulating pump, once net small pump, once net expansion tank and softening
Hutch water device；
The outlet of the first oil burning boiler and the second oil burning boiler is connected to the entrance of water knockout drum；
The first outlet of water knockout drum is connected to respectively the first entrance of pipe heat exchanger, the first entrance of the first plate type heat exchanger
And second plate type heat exchanger first entrance, the second outlet of water knockout drum is connected to the first interface of water collector；
The first of the first outlet of pipe heat exchanger, the first outlet of the first plate type heat exchanger and the second plate type heat exchanger goes out
Mouth is connected to the second interface of water collector, and the 3rd interface of water collector is connected to the first oil burning boiler and the by once net water circulating pump
The entrance of two oil burning boilers；
Once net expansion tank is connected to once net water circulating pump entrance；
Soften hutch water device and once net water circulating pump entrance is connected to by once net small pump；
Secondary network system, it has with the expansion of hot end equipment, secondary network water circulating pump, secondary network small pump and secondary network
Water tank, with hot end equipment three user's branch roads and five user's branch roads are included, three user's branch roads include three branch roads first with hot end,
Three branch roads second hot end and three branch roads the 3rd use hot end, five user's branch roads include five branch roads first with hot end, five
Hot end is used with hot end, five branch roads the 3rd with hot end and five branch roads the 5th with hot end, five branch roads the 4th in road second；
The second of the second outlet of pipe heat exchanger, the second outlet of the first plate type heat exchanger and the second plate type heat exchanger goes out
Mouth is connected to the entrance with hot end, and the second entrance of pipe heat exchanger, the second entrance of the first plate type heat exchanger and second are board-like
The second entrance of heat exchanger is connected to the outlet with hot end by secondary network water circulating pump；
Soften the entrance that hutch water device is connected to secondary network water circulating pump by secondary network small pump；
Secondary network expansion tank is connected to the entrance of secondary network water circulating pump.
Preferably, arranging the first pressure reduction pick-up in the adapter between the first interface of the second outlet of water knockout drum and water collector
Device and the first electric control valve.
Preferably, once arranging Y types dirt separator and electronic hydrotreater at net water circulating pump；At secondary network water circulating pump
Y types dirt separator and electronic hydrotreater are set.
Preferably, installing self-supporting balanced valve in five user's branch road feed pipes, teletransmission pressure is filled before self-supporting balanced valve
Table, on five user's branch road return pipes electric control valve is installed, and installs distance-transmission pressure gauge after electric control valve, five user's branch roads supply,
Pressure difference transmitter is installed between return pipe, manual modulation valve is installed on five user's branch road return pipes.
Preferably, installing self-supporting balanced valve in three user's branch road feed pipes, teletransmission pressure is filled before self-supporting balanced valve
Table, on three user's branch road return pipes electric control valve is installed, and installs distance-transmission pressure gauge after electric control valve, three user's branch roads supply,
Pressure difference transmitter is installed between return pipe, manual modulation valve is installed on three user's branch road return pipes.
Preferably, each is provided with calorimeter with hot end water inlet pipe, each is with hot outlet water at tail end arm equipped with electricity
Dynamic regulating valve and manual modulation valve, each is also equipped with balanced valve with hot outlet water at tail end arm.
Preferably, being provided with calorimeter on return main.
Preferably, installing the second pressure difference transmitter and the second electric control valve between the confession of secondary network system, backwater main.
Preferably, pressure reduction control device is connected to the first electric control valve and the first pressure difference transmitter, constant pressure supply water control
Device is connected to respectively the liquid level sensor in once net expansion tank and the once motor of net small pump.
Preferably, constant pressure supply water frequency-converting control device is connected to respectively the motor of secondary network small pump and secondary network swelling water
Liquid level sensor in case and, circulating pump pressure reduction frequency-converting control device is connected to respectively the motor of secondary network water circulating pump and the second pressure
Difference transmitter, process control equipment is connected to going out for the secondary net side setting of the second electric control valve, the second pressure difference transmitter, heat exchanger
The backwater regulating valve that net side of current transmitter and heat exchanger is arranged.
Compared to prior art, the present invention has the advantages that：The invention provides a clock is applied to Heat Supply Engineering
Comprehensive experimental system, embody the basic composition structure of actual central heating system, be provided with key heat resource equipment, heat exchange
Equipment and end heating equipment, have selected typical operation control facility.Student can during system debug and runing adjustment
To be familiar with the technological process of central heating system, the function of key equipment is specified, grasp the principle and operation for adjusting control
Strategy.
Description of the drawings
Fig. 1 is intended to for central heating comprehensive experimental system structural diagrams in the present invention, and part-structure is eliminated in figure.
Fig. 2 is thermal source (the first oil burning boiler and the second oil burning boiler) in the present invention and pipe network connection diagram.
Fig. 3 is for once net point, water collector bypass connection diagram at motor-driven pressure-difference balanced valve in the present invention.
Fig. 4 is net side (hot side) adapter schematic diagram of heat exchanger in the present invention.
Fig. 5 is heat exchanger secondary net side (hot side) adapter schematic diagram in the present invention.
Fig. 6 is secondary network bifurcation adapter schematic diagram in the present invention.
Fig. 7 is end heating equipment adapter schematic diagram in the present invention.
Fig. 8 runs control principle drawing for a pipe network system in the present invention.
Fig. 9 is secondary pipe network system operation control principle drawing in the present invention.
Specific embodiment
Referring to Fig. 1, a kind of central heating comprehensive experimental system, including once net system (pipe network system), it has
First oil burning boiler 1a, the second oil burning boiler 1b, water knockout drum 2, pipe heat exchanger 3, the first plate type heat exchanger 41, second is board-like changes
Hot device 42, once water collector 5, net water circulating pump 6, once net small pump 9, once net expansion tank 11 and softening hutch water device 13.
The outlet of the first oil burning boiler 1a and the second oil burning boiler 1b is connected to the entrance of water knockout drum 2.
The first outlet of water knockout drum 2 be connected to respectively the first entrance of pipe heat exchanger 3, the first of the first plate type heat exchanger 41
The first entrance of entrance and the second plate type heat exchanger 42, the second outlet of water knockout drum 2 is connected to the first interface of water collector 5.
The first outlet of pipe heat exchanger 3, the first outlet of the first plate type heat exchanger 41 and the second plate type heat exchanger 42
First outlet is connected to the second interface of water collector 5, and the 3rd interface of water collector 5 is connected to the first combustion by once net water circulating pump 6
The entrance of thermo oil boiler 1a and the second oil burning boiler 1b.
Once net expansion tank 11 is connected to the once entrance of net water circulating pump 6.
Soften hutch water device 13 and the once entrance of net water circulating pump 6 is connected to by once net small pump 9.
Secondary network system (secondary pipe network system), it has is mended with hot end equipment, secondary network water circulating pump 8, secondary network
Water pump 10 and secondary network expansion tank 12, with hot end equipment three user's branch roads and five user's branch roads, three user's branch road bags are included
Include the three hot ends 71 of branch road first, the three branch roads second hot end 73 of branch road the 3rd of hot end 72 and three, five user's branch roads
Including the five hot ends 81 of branch road first, the five hot ends 82 of branch road second, the five hot ends 83 of branch road the 3rd, five branch roads the 4th
With the hot end 85 of branch road the 5th of hot end 84 and five.
The second outlet of pipe heat exchanger 3, the second outlet of the first plate type heat exchanger 41 and the second plate type heat exchanger 42
Second outlet is connected to the entrance with hot end, the second entrance of pipe heat exchanger 3, the second entrance of the first plate type heat exchanger 41 and
The second entrance of the second plate type heat exchanger 42 is connected to the outlet with hot end by secondary network water circulating pump 8.
Soften the entrance that hutch water device 13 is connected to secondary network water circulating pump 8 by secondary network small pump 10.
Secondary network expansion tank 12 is connected to the entrance of secondary network water circulating pump 8.
First pressure difference transmitter and are set in the adapter between the second outlet of water knockout drum 2 and the first interface of water collector 5
One electric control valve (bypass motor-driven pressure-difference balanced valve).
Y types dirt separator and electronic hydrotreater are once set at net water circulating pump 6.
Self-supporting balanced valve is installed in five user's branch road feed pipes, distance-transmission pressure gauge is filled before self-supporting balanced valve, with other
Pressure gauge coordinates the pressure drop of observable balanced valve, electric control valve is installed on five user's branch road return pipes, after electric control valve
Distance-transmission pressure gauge is installed, the pressure drop with other pressure gauges cooperation observable electric control valves, between the confession of five user's branch roads, return pipe
(such as in figure between the first mount point A1 and the second mount point A2) installs pressure difference transmitter, can show that five branch roads are supplied on computers
Pressure reduction between backwater, on five user's branch road return pipes manual modulation valve is provided with, and is adjusted by computer or on-site manual, can
Change the discharge of this branch road.
Self-supporting balanced valve is installed in three user's branch road feed pipes, distance-transmission pressure gauge is filled before self-supporting balanced valve, with other
Pressure gauge coordinates the pressure drop of observable balanced valve, electric control valve is installed on three user's branch road return pipes, after electric control valve
Distance-transmission pressure gauge is installed, with the pressure drop that other pressure gauges coordinate observable electric control valve.Between the confession of three user's branch roads, return pipe
(such as in figure between the 3rd mount point B1 and the 4th mount point B2) installs pressure difference transmitter, can show that five branch roads are supplied on computers
Pressure reduction between backwater.Manual modulation valve is installed on three user's branch road return pipes, is adjusted by computer or on-site manual, can
Change the discharge of this branch road.
Each is provided with calorimeter with hot end (air heater) water inlet pipe, and is connected with computer, both can be from now
Manual record data on instrument board, also can from computer direct access data above, each is filled with hot outlet water at tail end arm
There are electric control valve and manual modulation valve, by computer or manually can adjust air and heat according to test requirements document
The water yield of device, each is also equipped with balanced valve with hot outlet water at tail end arm.
It is provided with return main's (with the pipeline between hot end and heat exchanger, being such as arranged at the 5th mount point D)
Calorimeter.
(such as in figure between the 6th mount point E1 and the 7th mount point E2) installs second between the confession of secondary network system, backwater main
Pressure difference transmitter and the second electric control valve (bypass motor-driven pressure-difference balanced valve).
Y types dirt separator and electronic hydrotreater are set at secondary network water circulating pump 8.
In this comprehensive experimental system, thermal source is two oil-fired water-boilers (first, second oil burning boiler), if dividing, collecting
Hydrophone is each one, point, set pressure difference transmitter, electric control valve between water collector, electric control valve is adjusted by differential pressure controller
Aperture makes a pipe network for pressure stability between backwater.Heat transmission equipment is two platen type heat exchangers (first, second plate type heat exchanger)
With a pipe heat exchanger.Water circulating pump is installed on boiler inlet, while arranging Y types dirt separator and electronic hydrotreater.
Secondary network water circulating pump is located at heat exchanger entrance, and water is squeezed into heat exchanger by water circulating pump during operation, after heat exchange,
Supply water to system end.System end (using hot end) is eight air heaters, simulates eight heat users.It is outdoor big for simulation
The pressure loss of type pipe network, on the confession water return pipeline between each heat user, is equipped with butterfly valve and pressure gauge, for adjusting and seeing
Examine the pressure drop of pipeline.Calorimeter is installed on return main.To make secondary pipe network for pressure stability between backwater, in secondary network
For setting motor-driven pressure-difference balanced valve between, backwater main.Pipeline Y types dirt separator and electronic hydrotreater are pumped into located at secondary network recirculated water
Mouthful.
Eight air heaters are eight heat users of simulation, exhaust blower from indoor suction air, through air heater,
Air is heated, and is then discharged to outdoor, and the heat consumption of hot-water heating system is fallen.Manual wind is fitted with after every air heater
Adjustable valve, can change air quantity according to different test requirements documents.
Boiler (the first oil burning boiler and the second oil burning boiler) is imported and exported and is mounted on high-precision pressure sensor, while peace
Dress pressure gauge and duct type thermometer.Boiler (the first oil burning boiler and the second oil burning boiler) outlet is equipped with calorimeter, measurable
The indexs such as inlet temperature, outlet temperature, the heat of boiler.
Heat exchanger be made up of two platen type heat exchangers and pipe heat exchanger (i.e. heat exchanger include pipe heat exchanger, the
One plate type heat exchanger and the second plate type heat exchanger), the import and export of heat exchanger are provided with high-precision pressure sensor and pressure gauge, temperature
Degree meter, heat exchanger exit side (first outlet of pipe heat exchanger, the first outlet of the first plate type heat exchanger and the second plate-type heat-exchange
The first outlet of device) electric control valve and manual modulation valve are installed, pipeline flow can be changed by computer controls,
Can manual site's regulation.Change the heat exchange amount of heat exchanger by adjusting once net output, so as to control the water outlet of secondary network
Temperature.
Turbine flux transmitter, temperature sensor can be installed in pipe heat exchanger entrance, to calculate one on computers
The heat exchange amount of secondary net.
Once net water circulating pump is similar with secondary network water circulating pump, by taking secondary network water circulating pump as an example, secondary network recirculated water
Pump is two pumps, and two pumps are used in parallel, the using and the reserved, and compensator, pressure gauge are installed before and after pump, and pump discharge sets one-way non-return
Valve.Pump is imported and exported and is provided with butterfly valve, is only done shut-off and is used, and is not done regulation and is used, and is normally open.When starting pump every time, to check
The on off state of butterfly valve, in order to avoid damage water pump.
Once net small pump is similar with secondary network small pump, and by taking secondary network small pump as an example, secondary network small pump is two
Water pump, a preparation and a use, exit of pump sets pressure gauge, high-precision pressure sensor, one way stop peturn valve.When making level pressure water pump and using,
The expansion tank (once net expansion tank and secondary network expansion tank) of first and second pipe network should be turned off, exit of pump it is high-precision
The pressure change of degree pressure sensor monitoring system, as the feedback signal of level pressure pump variable frequency work.Make as moisturizing water pump
Used time, with the high and low liquid level gauge of expansion tank (now expansion tank should be connected with system) is coordinated, make the liquid level in expansion tank
Between setting position.
Once net system is also provided with expansion tank (once net expansion tank and secondary network expansion simultaneously with secondary network system
Water tank), the switching for pressurization methods is selected, and expansion tank is provided with high and low electronic liquid level gauge simultaneously.When system is using expansion
During water tank constant pressure supply water form, the ball valve on expansion tube is kept to be opening, the electric signal of high and low electronic liquid level gauge is as benefit
The start stop signal of water water pump.When system adopts variable frequency pump constant pressure supply water form, the ball valve on expansion tube is turned off, make expansion
Water tank disconnects with system.
Whole system can be also controlled by switch board and (be below brief introduction, specifically refer to existing in addition to artificial control
Have technology), for example：Pressure reduction control device 100 is connected to the first electric control valve 102 and the first pressure difference transmitter 101, constant pressure supply water
Control device 200 is connected to respectively the liquid level sensor in once net expansion tank 11 and the once motor of net small pump 9.Level pressure is mended
Water frequency-converting control device 300 be connected to the motor of secondary network small pump 10 and secondary network expansion tank 12 respectively in liquid level sensor
And, circulating pump pressure reduction frequency-converting control device 400 is connected to respectively the motor of secondary network water circulating pump 8 and the second pressure difference transmitter 401,
Process control equipment 500 is connected to going out for the secondary net side setting of the second electric control valve 402, the second pressure difference transmitter 401, heat exchanger
The backwater regulating valve that net side of current transmitter and heat exchanger is arranged.It should be noted that control device is passed with corresponding survey
The connection of sensor arrangement and control valve actuator or pump motor is electric signal transmission loop.
Constant pressure arrangement：First and second net is designed with expansion tank and frequency conversion moisturizing two ways level pressure supplies experimental selection.The former
It is the mode that constant pressure point level pressure is maintained using expansion tank, the latter changes supply frequency, puts down according to the change of control point pressure
It is sliding infinitely to adjust moisturizing revolution speed, and then rate of water make-up is adjusted in time, realize the constant of system constant pressure point pressure.Frequency conversion moisturizing is determined
Voltage-controlled system is realized by frequency-variable controller.
Hydraulic regime adjusting means：Two kinds for backwater level pressure difference constant control function：One is on for backwater main plus other
Logical regulating valve (bypass motor-driven pressure-difference balanced valve), suppresses heat user to adjust during experiment heating network operation by the regulation of valve
Pressure reduction change between the confession backwater that section causes.We are carried out respectively to first and second net from intelligent industrial regulator for backwater
Constant pressure difference control, once net point, pressure difference transmitter is housed between water collector, point, on the bypass line between water collector equipped with electricity
Dynamic regulating valve (bypass motor-driven pressure-difference balanced valve), is equipped with pressure difference transmitter, for backwater main between the confession backwater main of secondary network
Bypass line on be also equipped with electric control valve.Current signal is converted to as intelligence by transmitter for the pressure difference signal between backwater
The input of adjuster, adjuster is analyzed input quantity and set amount after the calculation process for judging and carrying out certain rule, defeated
Go out executing agency of the corresponding electric signal to electric control valve, control valve opening is adjusted, realize constant pressure difference control；Furthermore
Exactly ensured by variable frequency adjustment water circulating pump for the constant pressure difference between backwater.Specifically, pressure difference transmitter will be for returning
Pressure difference signal between water is converted into current signal and inputs to water circulating pump frequency-variable controller, and input value is led to setting value ratio by controller
After carry out analytical calculation, control corresponding motor output frequency, change pump rotary speed, reach regulation flow and ensure that pressure reduction is constant
Purpose.
Thermal drying adjusting means：The regulation of system thermal drying is mainly by the regulation control to thermal source and heat transmission equipment
Make to realize.Once net in as system heat sources two oil burning boilers equipped with powerful controller, user Ke Gen
According to itself needing to set its operational factor and the method for operation.Heat transmission equipment adjust major control thought be：According to heat transmission equipment
The supply water temperature of secondary side is adjusted accordingly to the flow of primary side.Specifically, two plate type heat exchangers and a pipe
Temperature sensor is housed at the secondary network side outlet of formula heat exchanger, electric control valve (backwater is housed on a net side water return pipeline
Regulating valve), every heat exchanger all selects intelligent industrial regulator, according to respective secondary network outlet temperature to each once net
Circling water flow rate is adjusted, and meets the heat demand of terminal temperature difference.
Central heating comprehensive experimental system of the present invention has complete technological process and typical system equipment, and contains
Adjusting means, the monitoring device of the overwhelming majority, has more comprehensively reappeared engineering practice key element in heating system.Fluid can be carried out
Transportation and distrubution apparatus performance, pipe resistance characteristic, the test analysis of heat transmission equipment performance, can also carry out the debugging and operation of heating system
The related engineering teacher's instructions of control, while can carry out that the research work such as the technical Analysis of system operation regulation are affected with thermal behavior,
With larger practical value.
Finally illustrate, above example is only unrestricted to illustrate technical scheme, although with reference to compared with
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, and without deviating from the objective and scope of technical solution of the present invention, it all should cover at this
In the middle of the right of invention.
Claims (10)
1. a kind of central heating comprehensive experimental system, it is characterised in that include：
Once net system, it has the first oil burning boiler (1a), the second oil burning boiler (1b), water knockout drum (2), pipe heat exchanger
(3), the first plate type heat exchanger (41), the second plate type heat exchanger (42), once water collector (5), net water circulating pump (6), once net
Small pump (9), once net expansion tank (11) and softening hutch water device (13)；
First oil burning boiler (1a) is connected to the entrance of water knockout drum (2) with the outlet of the second oil burning boiler (1b)；
The first outlet of water knockout drum (2) be connected to respectively the first entrance of pipe heat exchanger (3), the of the first plate type heat exchanger (41)
The first entrance of one entrance and the second plate type heat exchanger (42), the second outlet of water knockout drum (2) is connected to the first of water collector (5) and connects
Mouthful；
The first outlet of pipe heat exchanger (3), the first outlet of the first plate type heat exchanger (41) and the second plate type heat exchanger (42)
First outlet be connected to the second interface of water collector (5), the 3rd interface of water collector (5) is connect by once net water circulating pump (6)
In the first oil burning boiler (1a) and the entrance of the second oil burning boiler (1b)；
Once net expansion tank (11) is connected to once net water circulating pump (6) entrance；
Soften hutch water device (13) and net water circulating pump (6) entrance is connected to once by once net small pump (9)；
Secondary network system, it has with hot end equipment, secondary network water circulating pump (8), secondary network small pump (10) and secondary network
Expansion tank (12), with hot end equipment three user's branch roads and five user's branch roads are included, three user's branch roads include three branch roads first
With hot end (71), three branch roads second hot end (72) and three branch roads the 3rd with hot end (73), five user's branch roads include five
Branch road first hot end (81), five branch roads second hot end (82), five branch roads the 3rd hot end (83), five branch roads the 4th
With hot end (84) and five branch roads the 5th with hot end (85)；
The second outlet of pipe heat exchanger (3), the second outlet of the first plate type heat exchanger (41) and the second plate type heat exchanger (42)
Second outlet be connected to entrance with hot end, the second entrance of pipe heat exchanger (3), the second of the first plate type heat exchanger (41)
The second entrance of entrance and the second plate type heat exchanger (42) is connected to the outlet with hot end by secondary network water circulating pump (8)；
Soften the entrance that hutch water device (13) is connected to secondary network water circulating pump (8) by secondary network small pump (10)；
Secondary network expansion tank (12) is connected to the entrance of secondary network water circulating pump (8).
2. central heating comprehensive experimental system according to claim 1, it is characterised in that the second outlet of water knockout drum (2) with
First pressure difference transmitter and the first electric control valve are set in the adapter between the first interface of water collector (5).
3. central heating comprehensive experimental system according to claim 1, it is characterised in that once net water circulating pump (6) place sets
Put Y types dirt separator and electronic hydrotreater；Secondary network water circulating pump (8) place arranges Y types dirt separator and electronic hydrotreater.
4. central heating comprehensive experimental system according to claim 1, it is characterised in that install in five user's branch road feed pipes
Self-supporting balanced valve, fills distance-transmission pressure gauge before self-supporting balanced valve, on five user's branch road return pipes electric control valve is installed, electronic
Distance-transmission pressure gauge is installed after regulating valve, pressure difference transmitter is installed between the confession of five user's branch roads, return pipe, on five user's branch road return pipes
Manual modulation valve is installed.
5. central heating comprehensive experimental system according to claim 1, it is characterised in that install in three user's branch road feed pipes
Self-supporting balanced valve, fills distance-transmission pressure gauge before self-supporting balanced valve, on three user's branch road return pipes electric control valve is installed, electronic
Distance-transmission pressure gauge is installed after regulating valve, pressure difference transmitter is installed between the confession of three user's branch roads, return pipe, on three user's branch road return pipes
Manual modulation valve is installed.
6. central heating comprehensive experimental system according to claim 1, it is characterised in that each is pacified with hot end water inlet pipe
Equipped with calorimeter,, with hot outlet water at tail end arm equipped with electric control valve and manual modulation valve, each is propped up with hot outlet water at tail end for each
Balanced valve is also equipped with pipe.
7. central heating comprehensive experimental system according to claim 1, it is characterised in that heat is provided with return main
Table.
8. central heating comprehensive experimental system according to claim 1, it is characterised in that secondary network system is supplied, backwater main
Between the second pressure difference transmitter and the second electric control valve are installed.
9. central heating comprehensive experimental system according to claim 2, it is characterised in that pressure reduction control device (100) is connected to
First electric control valve (102) and the first pressure difference transmitter (101), constant pressure supply water control device (200) is connected to respectively once net
Liquid level sensor in expansion tank (11) and the once motor of net small pump (9).
10. central heating comprehensive experimental system according to claim 8, it is characterised in that constant pressure supply water frequency-converting control device
(300) liquid level sensor in being connected to the motor of secondary network small pump (10) and secondary network expansion tank (12) respectively and, circulation
Pump pressure difference frequency-converting control device (400) is connected to respectively the motor and the second pressure difference transmitter (401) of secondary network water circulating pump (8),
Process control equipment (500) is connected to the second electric control valve (402), the second pressure difference transmitter (401), the secondary net side of heat exchanger and sets
The backwater regulating valve that the net side of water flow transmitter and heat exchanger put is arranged.
Priority Applications (1)
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|---|---|---|---|
| CN201611055739.8A CN106652744A (en) | 2016-11-25 | 2016-11-25 | Central heating comprehensive experiment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611055739.8A CN106652744A (en) | 2016-11-25 | 2016-11-25 | Central heating comprehensive experiment system |
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| CN106652744A true CN106652744A (en) | 2017-05-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483379A (en) * | 2021-07-02 | 2021-10-08 | 辽宁展拓新能源科技有限公司 | Heat storage circulation system |
| CN116013126A (en) * | 2023-01-31 | 2023-04-25 | 哈尔滨工业大学 | Central heating experiment teaching system based on combination of semi-physical objects and three-dimensional simulation |
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| CN113483379A (en) * | 2021-07-02 | 2021-10-08 | 辽宁展拓新能源科技有限公司 | Heat storage circulation system |
| CN116013126A (en) * | 2023-01-31 | 2023-04-25 | 哈尔滨工业大学 | Central heating experiment teaching system based on combination of semi-physical objects and three-dimensional simulation |
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