CN104848306A - District heating and heat exchange system - Google Patents
District heating and heat exchange system Download PDFInfo
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- CN104848306A CN104848306A CN201410662074.1A CN201410662074A CN104848306A CN 104848306 A CN104848306 A CN 104848306A CN 201410662074 A CN201410662074 A CN 201410662074A CN 104848306 A CN104848306 A CN 104848306A
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Abstract
The invention discloses a district heating and heat exchange system. The district heating and heat exchange system mainly consists of a plate heat exchanger, a circulating pump, a water replenishment variable-frequency pump, a direct connecting booster variable-frequency pump, an electric pressure reducing valve, a control cabinet, a heat supply low district and a heat supply high district, wherein the plate heat exchanger is respectively connected with a primary water supply pipe and a primary water return pipe; the plate heat exchanger is also respectively connected with a low-district heat supply water supply pipe and a low-district heat supply water return pipe; the low-district heat supply water supply pipe and the low-district heat supply water return pipe are respectively connected with the heat supply low district to form a circulation, and are respectively connected with a high-district heat supply water supply pipe and a high-district heat supply water return pipe; and the high-district heat supply water supply pipe and the high-district heat supply water return pipe are respectively connected with the heat supply high district to form a circulation. The district heating and heat exchange system has the beneficial effects of realization of the economical effect of separate heat supply and common heat exchange of the heat supply low district and the heat supply high district, floor saving, good working reliability, convenience for installation and management and convenience for promotion and application.
Description
Technical field
The present invention relates to heating technology field, specifically a kind of district heating and heat-exchange system.
Background technology
Along with the fast development of Urbanization Construction, skyscraper gets more and more, and building height also constantly increases, thus skyscraper great majority all need to arrange district heating mode, skyscraper district heating in the market arranges two covers often by heat exchange station or many cover heat exchanger groups carry out heat exchange heating respectively, and often cover heat-exchange unit all includes the auxiliary facilities such as heat exchanger, circulating pump, small pump, this not only adds the floor space of heat exchange station, and invest high, management maintenance bothers.
Summary of the invention
The object of the present invention is to provide a kind of economy joint money and reliable district heating and heat-exchange system.
The technical solution adopted for the present invention to solve the technical problems is: a kind of district heating and heat-exchange system are primarily of plate type heat exchanger, circulating pump, moisturizing variable frequency pump, directly-connected boosting variable frequency pump, electronic pressure-reducing valve, switch board, heat low district and heating high district composition, an import of plate type heat exchanger is connected with a feed pipe and primary water pipe respectively with once exporting, the secondary outlet of plate type heat exchanger is connected with low district heating and supplying water Guan Hedi district heating water return pipe respectively with secondary import, low district heating and supplying water Guan Hedi district heating water return pipe is connected to form circulation with the low district of heating more respectively, a feed pipe is equipped with temperature control valve, low district heating water return pipe is equipped with filter one, low district heating water return pipe is equipped with circulating pump after filter one, before circulating pump, low district heating water return pipe after filter one is provided with pressure sensor one, and low district safety valve is housed, low district heating water return pipe is before circulating pump, also filling pipe and relief tube is connected to respectively after filter one, and moisturizing variable frequency pump and check-valves one are housed on filling pipe, relief tube is equipped with pressure release electromagnetic valve, described low district heating and supplying water Guan Hedi district heating water return pipe is connected to high district heating and supplying water Guan Hegao district heating water return pipe respectively, and high district heating and supplying water Guan Hegao district heating water return pipe is connected to form circulation with the high district of heating more respectively, low district heating and supplying water pipe was provided with temperature sensor before access high district heating and supplying water pipe, and before high district heating water return Guan Ze is connected to circulating pump, on low district heating water return pipe after filter one, and on high district heating and supplying water pipe, be equiped with pressure sensor two successively along water (flow) direction, directly-connected boosting variable frequency pump, check-valves two and pressure sensor three, high district heating water return pipe is equiped with filter two successively along backwater direction, high district safety valve, automatic open and close valve, electronic pressure-reducing valve and pressure sensor four, and automatic open and close valve be also provided be communicated with tubule be connected with described high district heating and supplying water pipe, and be communicated with after tubule is connected to directly-connected boosting variable frequency pump, on high district heating and supplying water pipe before check-valves two.Described temperature control valve, circulating pump, pressure release electromagnetic valve, moisturizing variable frequency pump, pressure sensor one, temperature sensor, pressure sensor two, directly-connected boosting variable frequency pump, pressure sensor three, electronic pressure-reducing valve are connected with switch board wiring respectively with pressure sensor four, and in switch board, be equiped with GPRS transceiver module, described GPRS transceiver module mainly carries out real-time radio transmission and reception to relevant data signal, is convenient to realize wireless remote monitering.Described switch board also by GPRS transceiver module with GPRS wireless mode be installed in the outdoor outdoor radio temperature sensor for sensing chamber's external environment temperature and be connected.
Operation principle of the present invention is, heat low district and heating high district share plate type heat exchanger heating and circulating pump pressurize, the outdoor environment temperature detected according to outdoor radio temperature sensor is provided heating water outlet temperature setting value by switch board system adaptively, then the heating water outlet temperature setting value provided according to system relative to temperature sensor by temperature control valve regulates its aperture automatically, the temperature sensor be contained on low district heating and supplying water pipe detects heating leaving water temperature, when the setting value that heating leaving water temperature provides lower than system being detected, its aperture large left by temperature control valve, make the flow increase that a time feed pipe enters plate type heat exchanger, heating leaving water temperature raises, otherwise, then turn down temperature control valve aperture and reduce a feed pipe flow, thus make heating leaving water temperature maintain system to be suitable for outdoor environment temperature change and in the setting value that provides, realize the present invention energy-conservation, comfortable heating effect, the pressure sensor one be contained on low district heating water return pipe detects circulating pump intake pressure, when the backwater constant voltage value of circulating pump intake pressure lower than systemic presupposition being detected, moisturizing variable frequency pump will automatically start and carry out frequency-changing pressure stabilizing moisturizing to low district heating water return pipe relative to the backwater constant voltage value of systemic presupposition, voltage stabilizing, and make circulating pump intake pressure be stabilized in the backwater constant voltage value of systemic presupposition, when detecting that circulating pump intake pressure is stabilized in the backwater constant voltage value of systemic presupposition, and when maintaining 30s ~ 60s, moisturizing variable frequency pump is by shutdown and enter dormancy holding state, so repeatedly, realize voltage stabilizing of the present invention, level pressure and termination of pumping energy-saving effect, when pressure sensor one detect circulating pump intake pressure higher than the backwater constant voltage value of systemic presupposition and reach systemic presupposition super-pressure force value and above time, pressure release electromagnetic valve will open sluicing automatically, until when circulating pump intake pressure falls back to the backwater constant voltage value of systemic presupposition, pressure release electromagnetic valve will be closed automatically, when pressure sensor one detects the anhydrous force value of circulating pump intake pressure lower than systemic presupposition, circulating pump is by stoppage protection, when circulating pump intake pressure recovers and the backwater constant voltage value of circulating pump intake pressure at systemic presupposition detected, circulating pump automatically starts and reverts to normal operating condition,
Meanwhile, directly-connected boosting variable frequency pump is by the water intaking of high district heating and supplying water Guan Congdi district heating and supplying water pipe, heating high district heating is pressurised into through frequency conversion, the high district that heats gives being back to after reduced pressure treatment low district heating water return pipe by high district heating water return pipe through electronic pressure-reducing valve again and forms circulation, the pressure sensor two be contained on high district heating and supplying water pipe detects directly-connected boosting variable frequency pump intake pressure, and pressure sensor two is shut down when the anhydrous force value lower than systemic presupposition being detected mainly for the protection of directly-connected boosting variable frequency pump and have higher than systemic presupposition the automatic control and scheduling co-design started during hydraulic pressure force value, and the heating discharge pressure setting value needed for the high district of heating according to systemic presupposition is carried out frequency conversion and unvarying pressure control relative to pressure sensor three by directly-connected boosting variable frequency pump, simultaneously, outlet pressure by being communicated with tubule transmission directly-connected boosting variable frequency pump is opened by automatic open and close valve automatically that be contained on high district heating water return pipe, the electronic pressure-reducing valve be contained on high district heating water return pipe regulates its aperture and automatic pressure-reducing relative to pressure sensor four adaptively according to the high district backwater constant pressure value of systemic presupposition, the pressure sensor four be contained on high district heating water return pipe detects that high district heating water return pipe accesses the pressure of low district heating water return pipe, by when high district's backwater constant pressure value higher than systemic presupposition of pressure that high district heating water return pipe accesses low district heating water return pipe being detected, electronic for control pressure-reducing valve is turned down its circulation, the pressure of high district heating water return pipe after electronic pressure-reducing valve reduces, otherwise, electronic pressure-reducing valve will open its circulation large, heating water return pipe pressure after electronic pressure-reducing valve in high district raises, thus realize the pressure that height district of the present invention heating water return pipe accesses low district heating water return pipe and maintain in the high district backwater constant pressure value of systemic presupposition, ensure that the effect that the high district of heating and the low district of heating heat simultaneously.Described automatic open and close valve automatically will be opened when directly-connected boosting variable frequency pump runs, automatically be closed because of decompression when directly-connected boosting variable frequency pump is shut down; make the effectively current cut off in heating Gao Qu and high district heating water return pipe enter low district heating water return pipe when directly-connected boosting variable frequency pump is shut down, thus eliminate the potential safety hazard in the low district of heating.
The invention has the beneficial effects as follows, present invention achieves the low district of heating and the high economy joint money effect distinguished for warm common heat exchange of heating, and save occupation of land, its functional reliability is good, installs convenient management, easy to utilize.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention.
In figure, 1, a feed pipe, 2, temperature control valve, 3, primary water pipe, 4, plate type heat exchanger, 5, circulating pump, 6, filling pipe, 7, relief tube, 8, pressure release electromagnetic valve, 9, check-valves one, 10, moisturizing variable frequency pump, 11, heat low district, 12, low district heating water return pipe, 13, filter one, 14, low district safety valve, 15, low district heating and supplying water pipe, 16, pressure sensor one, 17, temperature sensor, 18, high district heating and supplying water pipe, 19, switch board, 20, GPRS transceiver module, 21, outdoor radio temperature sensor, 22, pressure sensor two, 23, directly-connected boosting variable frequency pump, 24, check-valves two, 25, pressure sensor three, 26, be communicated with tubule, 27, heat high district, 28, high district heating water return pipe, 29, filter two, 30, high district safety valve, 31, automatic open and close valve, 32, electronic pressure-reducing valve, 33, pressure sensor four.
Detailed description of the invention
With regard to accompanying drawing 1, a kind of district heating of the present invention and heat-exchange system are described in detail below below.
As shown in Figure 1, a kind of district heating of the present invention and heat-exchange system are primarily of plate type heat exchanger 4, circulating pump 5, moisturizing variable frequency pump 10, directly-connected boosting variable frequency pump 23, electronic pressure-reducing valve 32, switch board 19, heat low district 11 and the high district 27 of heating forms, an import of plate type heat exchanger 4 is connected with a feed pipe 1 and primary water pipe 3 respectively with once exporting, the secondary outlet of plate type heat exchanger 4 is connected with low district heating and supplying water Guan15He Di district heating water return pipe 12 respectively with secondary import, low district heating and supplying water Guan15He Di district heating water return pipe 12 is connected to form circulation with the low district 11 of heating more respectively, a feed pipe 1 is equipped with temperature control valve 2, low district heating water return pipe 12 is equipped with filter 1, low district heating water return pipe 12 is equipped with circulating pump 5 after filter 1, before circulating pump 5, low district heating water return pipe 12 after filter 1 is provided with pressure sensor 1, and low district safety valve 14 is housed, low district heating water return pipe 12 is before circulating pump 5, filling pipe 6 and relief tube 7 is also connected to respectively after filter 1, and moisturizing variable frequency pump 10 and check-valves 1 are housed on filling pipe 6, relief tube 7 is equipped with pressure release electromagnetic valve 8, described low district heating and supplying water Guan15He Di district heating water return pipe 12 is connected to high district heating and supplying water Guan18He Gao district heating water return pipe 28 respectively, and high district heating and supplying water Guan18He Gao district heating water return pipe 28 is connected to form circulation with the high district 27 of heating more respectively, low district heating and supplying water pipe 15 was provided with temperature sensor 17 before access high district heating and supplying water pipe 18, before high district heating water return pipe 28 is then connected to circulating pump 5, on low district heating water return pipe 12 after filter 1, and on high district heating and supplying water pipe 18, be equiped with pressure sensor 2 22 successively along water (flow) direction, directly-connected boosting variable frequency pump 23, check-valves 2 24 and pressure sensor 3 25, high district heating water return pipe 28 is equiped with filter 2 29 successively along backwater direction, high district safety valve 30, automatic open and close valve 31, electronic pressure-reducing valve 32 and pressure sensor 4 33, and automatic open and close valve 31 be also provided be communicated with tubule 26 be connected with described high district heating and supplying water pipe 18, and be communicated with after tubule 26 is connected to directly-connected boosting variable frequency pump 23, on high district heating and supplying water pipe 18 before check-valves 2 24.Described temperature control valve 2, circulating pump 5, pressure release electromagnetic valve 8, moisturizing variable frequency pump 10, pressure sensor 1, temperature sensor 17, pressure sensor 2 22, directly-connected boosting variable frequency pump 23, pressure sensor 3 25, electronic pressure-reducing valve 32 and pressure sensor 4 33 are connected with switch board 19 wiring respectively, and GPRS transceiver module 20 is equiped with in switch board 19, described GPRS transceiver module 20 mainly carries out real-time radio transmission and reception to relevant data signal, is convenient to realize wireless remote monitering.Described switch board 19 also by GPRS transceiver module 20 with GPRS wireless mode be installed in the outdoor outdoor radio temperature sensor 21 for sensing chamber's external environment temperature and be connected.
Operation principle of the present invention is, heat low district 11 and the high district 21 of heating shares plate type heat exchanger 4 and to heat and circulating pump 5 pressurizes, the outdoor environment temperature detected according to outdoor radio temperature sensor 21 is provided heating water outlet temperature setting value by switch board 19 system adaptively, then the heating water outlet temperature setting value provided according to system relative to temperature sensor 17 by temperature control valve 2 regulates its aperture automatically, the temperature sensor 17 be contained on low district heating and supplying water pipe 15 detects heating leaving water temperature, when the setting value that heating leaving water temperature provides lower than system being detected, its aperture large left by temperature control valve 2, make the flow increase that a time feed pipe 1 enters plate type heat exchanger 4, heating leaving water temperature raises, otherwise, then turn down temperature control valve 2 aperture and reduce feed pipe 1 flow, thus make heating leaving water temperature maintain system to be suitable for outdoor environment temperature change and in the setting value that provides, realize the present invention energy-conservation, comfortable heating effect, the pressure sensor 1 be contained on low district heating water return pipe 12 detects circulating pump 5 intake pressure, when the backwater constant voltage value of circulating pump 5 intake pressure lower than systemic presupposition being detected, moisturizing variable frequency pump 10 will automatically start and carry out frequency-changing pressure stabilizing moisturizing to low district heating water return pipe 12 relative to the backwater constant voltage value of systemic presupposition, voltage stabilizing, and make circulating pump 5 intake pressure be stabilized in the backwater constant voltage value of systemic presupposition, when detecting that circulating pump 5 intake pressure is stabilized in the backwater constant voltage value of systemic presupposition, and when maintaining 30s ~ 60s, moisturizing variable frequency pump 10 is by shutdown and enter dormancy holding state, so repeatedly, realize voltage stabilizing of the present invention, level pressure and termination of pumping energy-saving effect, when pressure sensor 1 detect circulating pump 5 intake pressure higher than the backwater constant voltage value of systemic presupposition and reach systemic presupposition super-pressure force value and above time, pressure release electromagnetic valve 8 will open sluicing automatically, until when circulating pump 5 intake pressure falls back to the backwater constant voltage value of systemic presupposition, pressure release electromagnetic valve 8 will be closed automatically, when pressure sensor 1 detects the anhydrous force value of circulating pump 5 intake pressure lower than systemic presupposition, circulating pump 5 is by stoppage protection, when circulating pump 5 intake pressure recovers and the backwater constant voltage value of circulating pump 5 intake pressure at systemic presupposition detected, circulating pump 5 automatically starts and reverts to normal operating condition,
Meanwhile, directly-connected boosting variable frequency pump 23 is fetched water by high district heating and supplying water Guan18Cong Di district heating and supplying water pipe 15, be pressurised into the high district 27 of heating through frequency conversion to heat, the high district 27 that heats is back to low district heating water return pipe 12 by high district heating water return pipe 28 again and forms circulation after electronic pressure-reducing valve 32 gives reduced pressure treatment, the pressure sensor 2 22 be contained on high district heating and supplying water pipe 18 detects directly-connected boosting variable frequency pump 23 intake pressure, and pressure sensor 2 22 is shut down when the anhydrous force value lower than systemic presupposition being detected mainly for the protection of directly-connected boosting variable frequency pump 23 and have higher than systemic presupposition the automatic control and scheduling co-design started during hydraulic pressure force value, and the heating discharge pressure setting value needed for the high district 27 of heating according to systemic presupposition is carried out frequency conversion and unvarying pressure control relative to pressure sensor 3 25 by directly-connected boosting variable frequency pump 23, simultaneously, the outlet pressure transmitting directly-connected boosting variable frequency pump 23 by being communicated with tubule 26 is opened by automatic open and close valve 31 automatically that be contained on high district heating water return pipe 28, the electronic pressure-reducing valve 32 be contained on high district heating water return pipe 28 regulates its aperture and automatic pressure-reducing relative to pressure sensor 4 33 adaptively according to the high district backwater constant pressure value of systemic presupposition, the pressure sensor 4 33 be contained on high district heating water return pipe 28 detects that high district heating water return pipe 28 accesses the pressure of low district heating water return pipe 12, by when high district's backwater constant pressure value higher than systemic presupposition of pressure that high district heating water return pipe 28 accesses low district heating water return pipe 12 being detected, electronic for control pressure-reducing valve 32 is turned down its circulation, the pressure of high district heating water return pipe 28 after electronic pressure-reducing valve 32 reduces, otherwise, electronic pressure-reducing valve 32 will open its circulation large, high district heating water return pipe 28 pressure after electronic pressure-reducing valve 32 raises, thus realize the pressure that height district of the present invention heating water return pipe 28 accesses low district heating water return pipe 12 and maintain in the high district backwater constant pressure value of systemic presupposition, ensure that the effect that the high district 27 of heating and the low district 11 of heating heat simultaneously.Described automatic open and close valve 31 automatically will be opened when directly-connected boosting variable frequency pump 23 runs, automatically be closed because of decompression when directly-connected boosting variable frequency pump 23 is shut down; make the effectively current cut off in the high district 27 of heating and high district heating water return pipe 28 enter low district heating water return pipe 12 when directly-connected boosting variable frequency pump 23 is shut down, thus eliminate the potential safety hazard in the low district 11 of heating.
Claims (3)
1. a district heating and heat-exchange system are primarily of plate type heat exchanger, circulating pump, moisturizing variable frequency pump, directly-connected boosting variable frequency pump, electronic pressure-reducing valve, switch board, heat low district and heating high district composition, an import of plate type heat exchanger is connected with a feed pipe and primary water pipe respectively with once exporting, the secondary outlet of plate type heat exchanger is connected with low district heating and supplying water Guan Hedi district heating water return pipe respectively with secondary import, low district heating and supplying water Guan Hedi district heating water return pipe is connected to form circulation with the low district of heating more respectively, it is characterized in that, high district heating and supplying water Guan Hegao district heating water return pipe is connected to respectively at low district heating and supplying water Guan Hedi district heating water return pipe, and high district heating and supplying water Guan Hegao district heating water return pipe is connected to form circulation with the high district of heating more respectively, low district heating and supplying water pipe was provided with temperature sensor before access high district heating and supplying water pipe, high district heating and supplying water pipe is equiped with pressure sensor two successively along water (flow) direction, directly-connected boosting variable frequency pump, check-valves two and pressure sensor three, high district heating water return pipe is equiped with filter two successively along backwater direction, high district safety valve, automatic open and close valve, electronic pressure-reducing valve and pressure sensor four, and automatic open and close valve be also provided be communicated with tubule be connected with described high district heating and supplying water pipe, and be communicated with after tubule is connected to directly-connected boosting variable frequency pump, on high district heating and supplying water pipe before check-valves two.
2. a kind of district heating according to claim 1 and heat-exchange system, it is characterized in that, a feed pipe is equipped with temperature control valve, low district heating water return pipe is equipped with filter one, low district heating water return pipe is equipped with circulating pump after filter one, before circulating pump, low district heating water return pipe after filter one is provided with pressure sensor one, and low district safety valve is housed, low district heating water return pipe is before circulating pump, also filling pipe and relief tube is connected to respectively after filter one, and moisturizing variable frequency pump and check-valves one are housed on filling pipe, relief tube is equipped with pressure release electromagnetic valve.
3. a kind of district heating according to claim 1 and heat-exchange system, it is characterized in that, be equiped with GPRS transceiver module in described switch board, switch board also by GPRS transceiver module be installed in the outdoor outdoor radio temperature sensor for sensing chamber's external environment temperature and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410662074.1A CN104848306A (en) | 2014-11-19 | 2014-11-19 | District heating and heat exchange system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410662074.1A CN104848306A (en) | 2014-11-19 | 2014-11-19 | District heating and heat exchange system |
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| Publication Number | Publication Date |
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| CN104848306A true CN104848306A (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410662074.1A Pending CN104848306A (en) | 2014-11-19 | 2014-11-19 | District heating and heat exchange system |
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| CN (1) | CN104848306A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344028A (en) * | 2018-05-14 | 2018-07-31 | 北京***联科技发展有限公司 | A kind of manifold type heat pump heat supply method and manifold type heat pump heat distribution system |
-
2014
- 2014-11-19 CN CN201410662074.1A patent/CN104848306A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344028A (en) * | 2018-05-14 | 2018-07-31 | 北京***联科技发展有限公司 | A kind of manifold type heat pump heat supply method and manifold type heat pump heat distribution system |
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Application publication date: 20150819 |