CN201503063U - Full-automatic unattended heat exchanger unit - Google Patents
Full-automatic unattended heat exchanger unit Download PDFInfo
- Publication number
- CN201503063U CN201503063U CN2009200937767U CN200920093776U CN201503063U CN 201503063 U CN201503063 U CN 201503063U CN 2009200937767 U CN2009200937767 U CN 2009200937767U CN 200920093776 U CN200920093776 U CN 200920093776U CN 201503063 U CN201503063 U CN 201503063U
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- auxiliary reclay
- heat exchange
- controller
- contactor
- circulating pump
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Abstract
The utility model discloses a full-automatic unattended heat exchanger unit of a heat supply system, which uses a Siemens X32 controller, an outdoor temperature sensor, a primary water supply temperature sensor, a secondary return water temperature sensor, a primary water supply pressure sensor, a secondary return water pressure sensor and a level sensor are connected in parallel with the input ends of the controller, the output ends of the controller are respectively connected in series with a circulating pump transducer, the analog control end of a charging pump transducer, the control end of a flow-regulating valve, middle relays KA1-KA6 and a display screen, and the circulating pump transducer and the charging pump transducer are arranged on a three-phase power supply. Besides automatic control, the heat exchanger unit can be provided with a remote communication interface or Internet to exchange data with an upper computer, and can real-timely monitor and control a plurality of heat exchange stations. The heat exchanger unit is truly unattended. The utility model has the advantages of compact and reasonable structure design, less settings, simple operation, stable and reliable operation performance, more convenient maintenance and management, longer service life, lower cost, more benefit, economy, practicability, energy saving and high efficiency, and can be widely popularized in the industry.
Description
Technical field: the utility model relates to the heat exchange unit of the heat exchange station use that is arranged in the heating system between first and second pipe network, particularly relates to a kind of unmanned heat exchange unit that small pump, circulating pump and flow control valve are controlled automatically.
Background technology: for a long time, control such as small pump, circulating pump and the flow control valve etc. of heat exchanging station heat exchange machine all are to take to carry out manually, and heat exchange station must concentrate personnel to work in three shifts during central heating.Because human factor is more can not scientific and reasonablely be controlled heating index, causes energy waste, increase heat cost, influence the income of heating system.In recent years, along with improving constantly of science and technology development and automatization level, market is also more and more higher to the requirement of heat supply quality, environmental protection and energy saving, and original, simple heat-supplying mode can not satisfy the demand of modern market.Therefore, work out a kind of heat exchange unit of intelligence control system that has to improve the security and stability of environmental protection and energy saving effect, automatization level degree, system's operation, and the convenience of maintenance management, reduce operation expense, the income of increase heating system etc. all will be the inexorable trend of heating system development and the important topic of research.
Summary of the invention: the purpose of this utility model is to provide a kind of full-automatic unmanned heat exchange unit on duty.Mainly be that the operation that solves the original heat exchange unit existence of existing heat exchange station is manually controlled, hydro-power energy source's waste, management is controlled not science, heat cost height, the problem that income is few.
The technical solution of the utility model is as described below: this utility model comprises dc source, AC power, the heat exchange unit, also comprise controller, display screen, auxiliary reclay KA1-KA6, change-over switch, threephase switch QF2, QF5, A.C. contactor KM2, KM4, the circulating pump frequency converter, the small pump frequency converter, indicator lamp ZD2, ZD4-ZD7, temperature sensor, pressure sensor and liquid level sensor, it is by controller is set, with outdoor temperature sensor, once supply, the return water temperature sensor, secondary supply and return water temperature sensor, once supply, the pressure of return water sensor, secondary supplies, the pressure of return water sensor, ten signal input parts of the parallel access controller of liquid level sensor, and with the controller output end control signal respectively with the circulating pump frequency converter, the simulation control end of small pump frequency converter, the Flux Valve Control end, auxiliary reclay KA1-KA6 and display screen are in series, and in parallel by threephase switch QF2 between three phase mains and circulating pump and small pump, the circulating pump frequency converter, A.C. contactor KM2 and threephase switch QF5, the small pump frequency converter, the branch circuit that A.C. contactor KM4 connects is respectively realized.
The beneficial effects of the utility model: because this utility model has been taked said structure, especially adopt Siemens X32 type controller to add organic cooperation of Tu Lingkai thing configuration software as processor, make this utility model on the prior art basis, simplify structure greatly, become automatic control by whole manual operations, not only improved automaticity, the extensive work personnel have been saved, effectively improved heating efficiency, obviously reduced operation expense, and can be according to one, secondary supplies, pressure of return water is regulated the rotating speed of small pump automatically, realize constant pressure making up water, superpressure automatic drainage, pump trip during the water supply tank lack of water; Automatically regulate the rotating speed of circulating pump according to the secondary net for, backwater pressure reduction or pressure of supply water, guarantee secondary net outlet pressure or stable, realize that the unsteady flow amount of secondary net is regulated automatically for, backwater pressure reduction; Also can change, control the once aperture of net flow control valve automatically, guarantee that secondary net outlet temperature is stable according to secondary net outlet temperature and outdoor temperature; In addition, can be equipped with RS485 or Ethernet remote data communication interface or carry out exchange, collection and the control of data, at any time any one heat exchange station be monitored in real time and controlled through router, internet and host computer.The real unmanned of realizing the heat exchange unit.Have simultaneously few easy and simple to handle, the stable and reliable working performance of structural design compact and reasonable, setting value, maintenance management more convenient, effectively prolong equipment life, economical and practical efficient energy-saving, suitable advantage such as widely popularize in the industry.
Description of drawings:
Fig. 1 is the electrical block diagram of full-automatic unmanned heat exchange unit on duty;
Fig. 2 is the circulating pump and the small pump control chart of full-automatic unmanned heat exchange unit on duty;
The network connection diagram of the full-automatic unmanned heat exchange unit on duty of Fig. 3.
The specific embodiment: by Fig. 1-heat exchange unit full-automatic unmanned on duty shown in Figure 3 is to design on the heat exchange unit basis of original heat exchange station, it has kept existing heat exchange unit and manual control part, it with Siemens X32 type controller 1 as processor, with outdoor temperature sensor 2, a supply water temperature sensor 3, primary water temperature sensor 4, secondary water-supply temperature sensor 5, secondary return water temperature sensor 6, a pressure of supply water sensor 7, primary water pressure sensor 8, secondary water-supply pressure sensor 9, secondary pressure of return water sensor 10, ten signal input parts of liquid level sensor 11 feedback signal parallel access controllers 1, and with controller 1 output control signal respectively with circulating pump frequency converter 12, the simulation control end of small pump frequency converter 13, the control end of flow control valve 14, auxiliary reclay KA1-KA6 and display screen are in series.And between three phase mains and circulating pump 15 and three phase mains and small pump 16 branch circuit of connecting in parallel respectively by threephase switch QF2, circulating pump frequency converter 12, A.C. contactor KM2 and threephase switch QF5, small pump frequency converter 13, A.C. contactor KM4.Meanwhile, change-over switch 17,18 is set in single phase alternating current power supply also, (as shown in Figure 2), and two change-over switches, 17,18 automatic transmissions are connected with auxiliary reclay KA1, KA2 normal opened contact respectively, thus form automatically and manual dual control.In the automatic control circuit of circulating pump 15 earlier by A.C. contactor KM2 with after indicator lamp ZD2 is in parallel, connect with auxiliary reclay KA1 normal opened contact and change-over switch 17 automatic transmissions again, and be to connect with the normally closed contact of auxiliary reclay KA6, A.C. contactor KM3 and auxiliary reclay KA2 normal opened contact, change-over switch 18 automatic transmissions again after A.C. contactor KM4 and the indicator lamp ZD4 parallel connection in the automatic control circuit of small pump 16.Manually part is identical substantially with prior art for it.Only in to the control of small pump 16, connect with A.C. contactor KM4 normally closed contact change-over switch 18 is manual.4 branch circuits also in parallel are auxiliary reclay KA5 normal opened contact and magnetic valve 19, auxiliary reclay KA3 and security alarm indicator lamp ZD5, auxiliary reclay KA4 and safeguard alarm lamp ZD6, auxiliary reclay KA6 and liquid level warning indicator lamp ZD7 in single phase alternating current power supply.The above is the control section of the unmanned heat exchange unit of each heat exchange station, for the ease of centralized Control, can be by set RS485 communication interface or Ethernet remote data communication interface on the controller 1 of the present utility model, perhaps through router, internet be connected with heat supply center control room host computer (as Fig. 3), to realize the exchange of data, gather and to the operational factor of the heat exchange unit of a plurality of heat exchange stations, and carry out record automatically according to the time of setting, can on host computer, inquire about at any time, the history data of groups of printers, and describe, the history of printing temperature, pressure history, be convenient to analyze and grasp the operation conditions of unit, to the remote real time monitoring and the controls such as solution of fault.
The utility model is after assembling finishes, should be with Tu Lingkai thing configuration software program through notebook computer input controller 1, when the user uses, should basic parameter be set according to actual conditions after connecting control power supply (alternating current 220V, two groups exchange 24V and direct current 24V), set or the like and can pass through the direct video data of display screen as pressure set points, first and second net temperature.Adjust the full-automatic unmanned heat exchange unit on duty in back and begin to enter duty.1 pair of controlled device of controller such as pressure, temperature, liquid level etc. detect, and at first controlled volume are transformed into the unified signal of telecommunication, are transformed into data signal through A/D converter and send in the process controller (industrial computer or PLC).Computer compares this measured value and setting value, by certain control algolithm, produces control instruction, converts data signal to the signal of telecommunication through D/A again, then by the actuating mechanism controls controlled device, reaches the control target of expection.
Its small pump 16 adopts the frequency-changing pressure stabilizing moisturizing, when its measured value of secondary net pressure of return water is lower than the moisturizing pressure set points of system, control signal is sent into the simulation control end of small pump frequency converter 13 by controller 1 output control terminal, connect auxiliary reclay KA2 simultaneously, the adhesive of auxiliary reclay KA2 normal opened contact, it is electric that A.C. contactor KM4 is got, and small pump 16 three-phase working powers are connected in the adhesive of A.C. contactor KM4 normal opened contact, and small pump 16 is to the pipe network moisturizing.And regulate the rotating speed of small pump 16 automatically by control system, make the pressure of return water of system consistent with setting pressure.When the secondary pressure of return water is lower than lowest limit, controller 1 is connected auxiliary reclay KA4, control auxiliary reclay KA2 simultaneously and transfer disconnection to by connection, its normal opened contact disconnects, A.C. contactor KM4 dead electricity, small pump 16 stalls, auxiliary reclay KA4 normal opened contact adhesive this moment, indicator lamp ZD6 sends and safeguards the indication of reporting to the police.When system's thermal expansion superpressure, controller 1 output control signal is connected auxiliary reclay KA5, KA3, makes its normal opened contact adhesive, opens magnetic valve 19 pressure releases automatically; The control that keep-ups pressure is stable.Reach the purpose of constant pressure making up water.Send the security alarm indication by indicator lamp ZD5 simultaneously.When the water supply tank lack of water, the simulation control end signal of small pump frequency converter 13 is 0, A.C. contactor KM4 dead electricity, and A.C. contactor KM4 normal opened contact disconnects and pump trip.In case small pump 16 idle running shield to small pump 16.The auxiliary reclay KA6 energising that be connected with its output this moment under the control of controller 1, the adhesive of auxiliary reclay KA6 normal opened contact, indicator lamp ZD7 sends the liquid level warning indication.This automatic constant-pressure moisturizing can be controlled two small pumps 16 and work simultaneously, when the first water filling of system, because rate of water make-up is big, can controls two pumps automatically and turn round simultaneously, shortens the moisturizing time.Also can timing automatic cut-in stand-by pump during normal operation, prevent stand-by pump for a long time need not and corrosion.
Circulating pump 15 adopts the control of frequency conversion pressure, and the control of circulating pump frequency converter 12 has dual mode: the one, according to the pressure of supply water of secondary net or for, backwater pressure reduction; The 2nd, according to the return water temperature of secondary net or for, backwater temperature difference; Automatically regulate the rotating speed of circulating pump 15, first kind of control mode is suitable for bigger heating system, and second kind of control mode is fit to smaller heating system.Still send into control signal by controller 1 to circulating pump frequency converter 12 simulation control ends when starting circulating pump 15, A.C. contactor KM2 gets electric its normal opened contact adhesive, connects circulating pump 15 three-phase working powers and makes it enter duty.Certainly also can use soft start.The utility model can be controlled three circulating pumps 15 at most and move automatically, when a circulating pump 15 can not satisfy the pressure of supply water (or flow) of secondary net when requiring, system switches to the power frequency state with first circulating pump 15 from the frequency conversion state automatically, second circulating pump 15 of varying frequency starting devoted oneself to work then, when the two pumps oepration at full load can't be satisfied system requirements, then start the 3rd pump frequency conversion successively and devote oneself to work.When the outer net thermic load reduces, system will cut off the circulating pump 15 of starting earlier successively, guarantee the outer net pressure stability, when secondary net pressure of supply water surpasses secondary net pressure of return water setting value, auxiliary reclay KA1 and A.C. contactor KM2 dead electricity under controller 1 control, circulating pump 15 quits work.So just realize the automatic regulatory function of unsteady flow amount of secondary net, reached automatic, energy-conservation effect.Owing to adopt frequency conversion control technique, powerful circulating pump 15 starts and stops all by Frequency Converter Control, power supply grid there is not surge impact, heating network there is not compression shock yet, greatly reduce the spoilage of pipeline, valve, the capacity requirement of the power transformer at heat exchanging station also reduces greatly simultaneously, obviously reduces investment outlay and maintenance cost.
Its once the flow-control of net thermal source be to control the once valve opening of net flow control valve 14 automatically according to secondary net outlet temperature, mainly be to give flow control valve 14 by controller 1 output voltage control signal, and control to adjust the valve opening of valve 14 with the size of voltage control signal, in order to guarantee that secondary net outlet temperature is the steady state value that requires, also according to the variation of outdoor temperature, the outlet temperature of regulating the secondary net automatically.Outdoor temperature is high more, and secondary net outlet temperature is low more; Outdoor temperature is low more, and secondary net outlet temperature is high more.And supply water temperature is optimized calculating, and be used for direct control system, remove to adjust automatically set-point with this, thereby make heat supplying process be in optimum state.
The utility model is except that having the place remote data communication facility, also has note fault remote alarms function, pass through microcomputer control system, the mode of failure condition in the heat exchange station by SMS in time can be sent on one one or the multi-section mobile phone, be convenient to the timely handling failure of maintenance personal.The fault that system can detect comprises that heat exchange station has a power failure, heat exchange station is metalled run out, leaks, small pump termination of pumping, water supply tank lack of water, circulating pump termination of pumping, frequency converter failure multiple alarm information or the like.
Claims (3)
1. full-automatic unmanned heat exchange unit on duty, comprise dc source, AC power, the heat exchange unit, also comprise controller (1), display screen, auxiliary reclay (KA1-KA6), change-over switch (18,19), threephase switch (QF2, QF5), A.C. contactor (KM2, KM4), circulating pump frequency converter (12), small pump frequency converter (13), indicator lamp (ZD2, ZD4-ZD7), temperature sensor (2-6), pressure sensor (7-10) and liquid level sensor (11), it is characterized in that: this heat exchange unit is provided with controller (1), with outdoor temperature sensor (2), once supply, return water temperature sensor (3,4), secondary supplies, return water temperature sensor (5,6) once supply, pressure of return water sensor (7,8), secondary supplies, pressure of return water sensor (9,10), the signal input part of the parallel access controller (1) of liquid level sensor (11), and with controller (1) output control signal respectively with circulating pump frequency converter (12), the simulation control end of small pump frequency converter (13), flow control valve (14) control end, auxiliary reclay (KA1-KA6) and display screen are in series, and in parallel by threephase switch (QF2) between three phase mains and circulating pump (15) and small pump (16), circulating pump frequency converter (12), A.C. contactor (KM2) and threephase switch (QF5), small pump frequency converter (13), the branch circuit that A.C. contactor (KM4) is connected respectively.
2. full-automatic unmanned heat exchange unit on duty according to claim 1, it is characterized in that: auxiliary reclay (KA1, KA2) normal opened contact be provided with respectively be connected on the single phase alternating current power supply by A.C. contactor (KM2) with after indicator lamp (ZD2) is in parallel, connect with auxiliary reclay (KA1) normal opened contact and change-over switch (17) automatic transmission again and with A.C. contactor (KM4) and same again auxiliary reclay (KA6) after indicator lamp (ZD4) is in parallel, the normally closed contact of A.C. contactor (KM3) and auxiliary reclay (KA2) normal opened contact, on two parallel branch circuit of change-over switch (18) automatic transmission series connection.
3. full-automatic unmanned heat exchange unit on duty according to claim 1 is characterized in that: auxiliary reclay (KA3-KA6) normal opened contact be separately positioned on the single phase alternating current power supply by auxiliary reclay (KA5) normal opened contact and magnetic valve (19), auxiliary reclay (KA 3) and security alarm indicator lamp (ZD5), auxiliary reclay (KA4) and safeguard alarm lamp (ZD6), auxiliary reclay (KA6) and four branch circuits in parallel that liquid level warning indicator lamp (ZD7) is formed on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200937767U CN201503063U (en) | 2009-06-09 | 2009-06-09 | Full-automatic unattended heat exchanger unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200937767U CN201503063U (en) | 2009-06-09 | 2009-06-09 | Full-automatic unattended heat exchanger unit |
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| Publication Number | Publication Date |
|---|---|
| CN201503063U true CN201503063U (en) | 2010-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200937767U Expired - Fee Related CN201503063U (en) | 2009-06-09 | 2009-06-09 | Full-automatic unattended heat exchanger unit |
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| CN (1) | CN201503063U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783083A (en) * | 2016-05-06 | 2016-07-20 | 唐山现代工控技术有限公司 | Method and device for adjusting heating station circulating pump through secondary network pressure |
| CN106123111A (en) * | 2016-08-16 | 2016-11-16 | 河南柴油机重工有限责任公司 | The moisturizing regulation of a kind of heat exchange station automatic control system controls loop and method |
| CN108662574A (en) * | 2018-05-07 | 2018-10-16 | 山东胜星化工有限公司 | A kind of control system of steam exhaust recovering device |
| CN109899890A (en) * | 2019-01-30 | 2019-06-18 | 山东海方智能科技股份有限公司 | A kind of control system and its implementation of unattended heat exchange station |
| CN113623783A (en) * | 2020-05-06 | 2021-11-09 | 江苏远视环境科技有限公司 | Primary pump bidirectional variable flow machine room |
-
2009
- 2009-06-09 CN CN2009200937767U patent/CN201503063U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783083A (en) * | 2016-05-06 | 2016-07-20 | 唐山现代工控技术有限公司 | Method and device for adjusting heating station circulating pump through secondary network pressure |
| CN106123111A (en) * | 2016-08-16 | 2016-11-16 | 河南柴油机重工有限责任公司 | The moisturizing regulation of a kind of heat exchange station automatic control system controls loop and method |
| CN108662574A (en) * | 2018-05-07 | 2018-10-16 | 山东胜星化工有限公司 | A kind of control system of steam exhaust recovering device |
| CN109899890A (en) * | 2019-01-30 | 2019-06-18 | 山东海方智能科技股份有限公司 | A kind of control system and its implementation of unattended heat exchange station |
| CN113623783A (en) * | 2020-05-06 | 2021-11-09 | 江苏远视环境科技有限公司 | Primary pump bidirectional variable flow machine room |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100609 Termination date: 20130609 |