CN104848298A - Double-source closed type heat exchange unit - Google Patents
Double-source closed type heat exchange unit Download PDFInfo
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- CN104848298A CN104848298A CN201410592487.7A CN201410592487A CN104848298A CN 104848298 A CN104848298 A CN 104848298A CN 201410592487 A CN201410592487 A CN 201410592487A CN 104848298 A CN104848298 A CN 104848298A
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Abstract
Disclosed is a double-source closed type heat exchange unit. The double-source closed type heat exchange unit mainly comprises a first heat exchanger, a second heat exchanger, a water supplementing variable-frequency pump, a circulating pump, a pressure sensor, an indoor temperature transmitter and a control cabinet. The indoor temperature transmitter detects the indoor temperature of a user side. The first heat exchanger and the second heat exchanger automatically adjust the outlet water temperature of a heat supply water supply pipe through combination between the indoor temperature and other data so as to conduct alternative heat supply, the second heat exchanger stops when the first heat exchanger works, and the second heat exchanger works when the first heat exchanger stops. The pressure sensor detects the pressure of a heat supply water return pipe, and is provided with three control points of a water return constant pressure value, an ultrahigh pressure value and a water lack pressure value. The double-source closed type heat exchange unit has the advantages that due to the fact that alternative heat supply of double heat sources and the double heat exchangers is adopted, the heat supply safety is improved, heat supply is conducted as needed through combination between indoor temperature changes and other data, the heat supply quality is improved, the efficiency is high, energy is saved, and the using effect is good.
Description
Technical field
The present invention relates to heat-exchange unit heating technology field, specifically a kind of double source enclosed heat-exchange unit.
Background technology
Heat-exchange unit has energy-saving and environmental protection and the adjustable feature of temperature-controllable, become an important component part of cities and towns central heating, but the heat-exchange unit of existing market is often only provided with independent a kind of thermal source, there is potential safety hazard, and heat-exchange unit operation regulates according to outdoor temperature mostly, ignore the actual calorific requirement change of heat user, cause occurring the operating mode of large discharge, the little temperature difference and waste energy.
Summary of the invention
The object of the present invention is to provide a kind of economical, safety, efficiently double source enclosed heat-exchange unit.
The technical solution adopted for the present invention to solve the technical problems is: double source enclosed heat-exchange unit is primarily of heat exchanger one, heat exchanger two, moisturizing variable frequency pump, circulating pump, pressure sensor, indoor temperature transmitter and switch board composition, the primary side of heat exchanger one is connected with thermal source one feed pipe and thermal source one return pipe respectively, and thermal source one feed pipe is equipped with temperature-sensing valve one, temperature sensor one is provided with after temperature-sensing valve one, thermal source one return pipe is equipped with ultrasonic flowmeter one, temperature sensor two is provided with after ultrasonic flowmeter one, shunt valve one is also provided with between thermal source one feed pipe and thermal source one return pipe, and shunt valve one be connected to thermal source one feed pipe temperature-sensing valve one before and thermal source one return pipe temperature sensor two after, temperature sensor one, temperature sensor two is connected with heat energy integrating instrument one respectively with ultrasonic flowmeter one, the primary side of heat exchanger two is connected with thermal source two feed pipe and thermal source two return pipe respectively, and thermal source two feed pipe is equipped with temperature-sensing valve two, temperature sensor three is provided with after temperature-sensing valve two, thermal source two return pipe is equipped with ultrasonic flowmeter two, temperature sensor four is provided with after ultrasonic flowmeter two, shunt valve two is also provided with between thermal source two feed pipe and thermal source two return pipe, and shunt valve two be connected to thermal source two feed pipe temperature-sensing valve two before and thermal source two return pipe temperature sensor four after, temperature sensor three, temperature sensor four is connected with heat energy integrating instrument two respectively with ultrasonic flowmeter two, described heat energy integrating instrument one and heat energy integrating instrument two are respectively used to the input heat measuring heat exchanger one and heat exchanger two, the secondary side import of heat exchanger two connects heating water inlet pipe two, heating water inlet pipe two is connected with heating water return pipe again, the secondary side outlet of heat exchanger two connects heating outlet pipe two, heating outlet pipe two is connected with the secondary side import of heat exchanger one by heating water inlet pipe one again, the secondary side outlet of heat exchanger one is connected with heating outlet pipe one, heating outlet pipe is connected with heating and supplying water pipe again and again, heating water return pipe is provided with filter, and be provided with circulating pump after filter, walk around circulating pump to be also provided with bypass pipe and to be connected with heating water return pipe, and bypass pipe is provided with check-valves, before circulating pump, heating water return pipe after filter is also provided with pressure sensor, safety valve, expansion drum, and be connected with filling pipe and relief tube, and moisturizing variable frequency pump filling pipe is equipped with, magnetic valve two relief tube is equipped with, magnetic valve two opens pressure release automatically for during heating water return pipe pressure superelevation, shunt valve tee joint is also provided with between heating water inlet pipe two and heating outlet pipe two, and heating water inlet pipe two is equipped with magnetic valve one, magnetic valve three shunt valve three is equipped with, heating outlet pipe two is provided with temperature sensor five, shunt valve four connection is provided with between heating water inlet pipe one and heating outlet pipe one, heating water inlet pipe one is equipped with magnetic valve four, magnetic valve five shunt valve four is equipped with, heating outlet pipe one is provided with temperature sensor six.
Described temperature-sensing valve one, heat energy integrating instrument one, temperature-sensing valve two, heat energy integrating instrument two, magnetic valve one, moisturizing variable frequency pump, magnetic valve two, circulating pump, pressure sensor, magnetic valve three, temperature sensor five, magnetic valve four, magnetic valve five is connected with switch board respectively with temperature sensor six, switch board is also connected with the indoor temperature transmitter being installed in user side, also moisturizing water source signaling interface and communication interface is separately provided with in switch board, moisturizing water source signaling interface arranges level sensor in water supply tank or moisturizing variable frequency pump intake pressure transmitter for connecting, be intended to the moisturizing water source signal detecting moisturizing variable frequency pump, with protect moisturizing variable frequency pump at water supply tank anhydrous or water inlet low-pressure time shut down, described communication interface is used for remote monitoring and connects, also can be connected with upper machine communication.
Operation principle of the present invention is, indoor temperature transmitter detects the indoor temperature of user side, heat exchanger one and heat exchanger two carry out mutual available at the leaving water temperature automatically adjusting heating and supplying water pipe in conjunction with indoor temperature and warm up, heat exchanger two stopping when heat exchanger one works, heat exchanger two work when heat exchanger one stops, temperature sensor five detects heating and supplying water pipe leaving water temperature when heat exchanger two works, temperature sensor six detects heating and supplying water pipe leaving water temperature when heat exchanger one works, and temperature-sensing valve one is suitable for indoor temperature change generated in case adjusted value relative to temperature sensor six carries out Flow-rate adjustment to thermal source one feed pipe, and temperature-sensing valve two is suitable for indoor temperature change generated in case adjusted value relative to temperature sensor five carries out Flow-rate adjustment to thermal source two feed pipe, when indoor temperature height, heating and supplying water pipe leaving water temperature adjusted value is relatively low, temperature-sensing valve one or temperature-sensing valve two turn down and reduce its circulation, when indoor temperature is low, heating and supplying water pipe leaving water temperature adjusted value wants high relatively, temperature-sensing valve one or temperature-sensing valve two leave large and increase its circulation, heating and supplying water pipe leaving water temperature is maintained all the time to be suitable on the adjusted value of indoor temperature change generated in case, magnetic valve one, magnetic valve three, magnetic valve four and magnetic valve five open or close adaptively, when magnetic valve one is opened, magnetic valve three and magnetic valve four are closed, magnetic valve five is opened, when magnetic valve one cuts out, magnetic valve three and magnetic valve four are opened, magnetic valve five cuts out, circulating pump is used for heating water return pipe circulation pressurization, heating, in pump operating cycle process, pressure sensor detects heating water return pipe pressure, and be provided with backwater constant voltage value, super-pressure force value and water deprivation stress value three control points, when pressure sensor detects heating water return pipe pressure lower than the backwater constant voltage value set, moisturizing variable frequency pump starts and carries out frequency-changing pressure stabilizing moisturizing to heating water return pipe, be stabilized in the backwater constant voltage value of setting to keep heating water return pipe pressure, and when heating water return pipe pressure is stabilized in the backwater constant voltage value of setting, and when maintaining 30s ~ 60s, moisturizing variable frequency pump is shut down and is entered dormancy holding state, when pressure sensor detect heating water return pipe pressure higher than setting constant voltage value and reach setting super-pressure force value and above time, magnetic valve two opens sluicing, pressure release automatically, when heating water return pipe pressure returns to the backwater constant voltage value of setting, magnetic valve two cuts out, when pressure sensor detect heating water return pipe pressure lower than setting water deprivation stress value and following time, system will judge heating water return pipe lack of water, circulating pump stoppage protection is also reported to the police, when heating water return pipe pressure returns to the backwater constant voltage value of setting, circulating pump automatically starts and recovers normal operation.
The invention has the beneficial effects as follows, the present invention adopts two thermal source, the mutual available of double heat exchanger to warm up, and improves heating security, simultaneously in conjunction with indoor temperature change generated in case heating according to need, improves heating quality, and efficiently, energy-conservation, result of use might as well.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention.
In figure, 1, thermal source one feed pipe, 2, temperature-sensing valve one, 3, temperature sensor one, 4, heat exchanger one, 5, shunt valve one, 6, temperature sensor two, 7, heat energy integrating instrument one, 8, ultrasonic flowmeter one, 9, thermal source one return pipe, 10, thermal source two feed pipe, 11, temperature-sensing valve two, 12, temperature sensor three, 13, heat energy integrating instrument two, 14, temperature sensor four, 15, thermal source two return pipe, 16, shunt valve two, 17, ultrasonic flowmeter two, 18, heat exchanger two, 19, magnetic valve one, 20, heating water inlet pipe two, 21, filling pipe, 22, moisturizing variable frequency pump, 23, relief tube, 24, magnetic valve two, 25, circulating pump, 26, pressure sensor, 27, safety valve, 28, heating water return pipe, 29, filter, 30, expansion drum, 31, bypass pipe, 32, check-valves, 33, shunt valve three, 34, magnetic valve three, 35, heating outlet pipe two, 36, temperature sensor five, 37, magnetic valve four, 38, heating water inlet pipe one, 39, communication interface, 40, switch board, 41, indoor temperature transmitter, 42, heating and supplying water pipe, 43, moisturizing water source signaling interface, 44, magnetic valve five, 45, shunt valve four, 46, temperature sensor six, 47, heating outlet pipe one.
Detailed description of the invention
With regard to accompanying drawing 1, double source enclosed heat-exchange unit of the present invention is described in detail below below.
As shown in Figure 1, double source enclosed heat-exchange unit of the present invention is primarily of heat exchanger 1, heat exchanger 2 18, moisturizing variable frequency pump 22, circulating pump 25, pressure sensor 26, indoor temperature transmitter 41 and switch board 40 form, the primary side of heat exchanger 1 is connected with thermal source one feed pipe 1 and thermal source one return pipe 9 respectively, and thermal source one feed pipe 1 is equipped with temperature-sensing valve 1, temperature sensor 1 is provided with after temperature-sensing valve 1, thermal source one return pipe 9 is equipped with ultrasonic flowmeter 1, temperature sensor 26 is provided with after ultrasonic flowmeter 1, shunt valve 1 is also provided with between thermal source one feed pipe 1 and thermal source one return pipe 9, and shunt valve 1 be connected to thermal source one feed pipe 1 temperature-sensing valve 1 before and thermal source one return pipe 9 temperature sensor 26 after, temperature sensor 1, temperature sensor 26 is connected with heat energy integrating instrument 1 respectively with ultrasonic flowmeter 1, the primary side of heat exchanger 2 18 is connected with thermal source two feed pipe 10 and thermal source two return pipe 15 respectively, and thermal source two feed pipe 10 is equipped with temperature-sensing valve 2 11, temperature sensor 3 12 is provided with after temperature-sensing valve 2 11, thermal source two return pipe 15 is equipped with ultrasonic flowmeter 2 17, temperature sensor 4 14 is provided with after ultrasonic flowmeter 2 17, shunt valve 2 16 is also provided with between thermal source two feed pipe 10 and thermal source two return pipe 15, and shunt valve 2 16 be connected to thermal source two feed pipe 10 temperature-sensing valve 2 11 before and thermal source two return pipe 15 temperature sensor 4 14 after, temperature sensor 3 12, temperature sensor 4 14 is connected with heat energy integrating instrument 2 13 respectively with ultrasonic flowmeter 2 17, described heat energy integrating instrument 1 and heat energy integrating instrument 2 13 are respectively used to the input heat measuring heat exchanger 1 and heat exchanger 2 18, the secondary side import of heat exchanger 2 18 connects heating water inlet pipe 2 20, heating water inlet pipe 2 20 is connected with heating water return pipe 28 again, the secondary side outlet of heat exchanger 2 18 connects heating outlet pipe 2 35, heating outlet pipe 2 35 is connected with the secondary side import of heat exchanger 1 by heating water inlet pipe 1 again, the secondary side outlet of heat exchanger 1 is connected with heating outlet pipe 1, heating outlet pipe 1 is connected with heating and supplying water pipe 42 again, heating water return pipe 28 is provided with filter 29, and be provided with circulating pump 25 after filter 29, walk around circulating pump 25 to be also provided with bypass pipe 31 and to be connected with heating water return pipe 28, and bypass pipe 31 is provided with check-valves 32, before circulating pump 25, heating water return pipe 28 after filter 29 is also provided with pressure sensor 26, safety valve 27, expansion drum 30, and be connected with filling pipe 21 and relief tube 23, and filling pipe 21 is equipped with moisturizing variable frequency pump 22, magnetic valve 2 24 relief tube 23 is equipped with, magnetic valve 2 24 opens pressure release automatically for during heating water return pipe 28 pressure superelevation, also be provided with shunt valve 3 33 between heating water inlet pipe 2 20 and heating outlet pipe 2 35 to be communicated with, and heating water inlet pipe 2 20 is equipped with magnetic valve 1, magnetic valve 3 34 shunt valve 3 33 is equipped with, heating outlet pipe 2 35 is provided with temperature sensor 5 36, between heating water inlet pipe 1 and heating outlet pipe 1, be provided with shunt valve 4 45 be communicated with, heating water inlet pipe 1 is equipped with magnetic valve 4 37, magnetic valve 5 44 shunt valve 4 45 is equipped with, heating outlet pipe 1 is provided with temperature sensor 6 46.
Described temperature-sensing valve 1, heat energy integrating instrument 1, temperature-sensing valve 2 11, heat energy integrating instrument 2 13, magnetic valve 1, moisturizing variable frequency pump 22, magnetic valve 2 24, circulating pump 25, pressure sensor 26, magnetic valve 3 34, temperature sensor 5 36, magnetic valve 4 37, magnetic valve 5 44 is connected with switch board 40 respectively with temperature sensor 6 46, switch board 40 is also connected with the indoor temperature transmitter 41 being installed in user side, moisturizing water source signaling interface 43 and communication interface 39 is also separately provided with in switch board, moisturizing water source signaling interface 43 arranges level sensor in water supply tank or moisturizing variable frequency pump 22 intake pressure transmitter for connecting, be intended to the moisturizing water source signal detecting moisturizing variable frequency pump 22, with protect moisturizing variable frequency pump 22 at water supply tank anhydrous or water inlet low-pressure time shut down, described communication interface 39 connects for remote monitoring, also can be connected with upper machine communication.
Operation principle of the present invention is, indoor temperature transmitter 41 detects the indoor temperature of user side, heat exchanger 1 and heat exchanger 2 18 carry out mutual available at the leaving water temperature automatically adjusting heating and supplying water pipe 42 in conjunction with indoor temperature and warm up, when heat exchanger 1 works, heat exchanger 2 18 stops, when heat exchanger 1 stops, heat exchanger 2 18 works, temperature sensor 5 36 detects heating and supplying water pipe 42 leaving water temperature when heat exchanger 2 18 works, temperature sensor 6 46 detects heating and supplying water pipe 42 leaving water temperature when heat exchanger 1 works, and temperature-sensing valve 1 is suitable for indoor temperature change generated in case adjusted value relative to temperature sensor 6 46 carries out Flow-rate adjustment to thermal source one feed pipe 1, and temperature-sensing valve 2 11 is suitable for indoor temperature change generated in case adjusted value relative to temperature sensor 5 36 carries out Flow-rate adjustment to thermal source two feed pipe 10, when indoor temperature height, heating and supplying water pipe 42 leaving water temperature adjusted value is relatively low, temperature-sensing valve 1 or temperature-sensing valve 2 11 turn down and reduce its circulation, when indoor temperature is low, heating and supplying water pipe 42 leaving water temperature adjusted value wants high relatively, temperature-sensing valve 1 or temperature-sensing valve 2 11 leave large and increase its circulation, heating and supplying water pipe 42 leaving water temperature is maintained all the time to be suitable on the adjusted value of indoor temperature change generated in case, magnetic valve 1, magnetic valve 3 34, magnetic valve 4 37 and magnetic valve 5 44 open or close adaptively, when magnetic valve 1 is opened, magnetic valve 3 34 and magnetic valve 4 37 are closed, magnetic valve 5 44 is opened, when magnetic valve 1 cuts out, magnetic valve 3 34 and magnetic valve 4 37 are opened, magnetic valve 5 44 cuts out, circulating pump 25 is for the pressurization that circulates to heating water return pipe 28, heating, in circulating pump 25 running, pressure sensor 26 detects heating water return pipe 28 pressure, and be provided with backwater constant voltage value, super-pressure force value and water deprivation stress value three control points, when pressure sensor 26 detects heating water return pipe 28 pressure lower than the backwater constant voltage value set, moisturizing variable frequency pump 22 starts and carries out frequency-changing pressure stabilizing moisturizing to heating water return pipe 28, to keep heating water return pipe 28 pressure stability in the backwater constant voltage value of setting, and when heating water return pipe 28 pressure stability is in the backwater constant voltage value of setting, and when maintaining 30s ~ 60s, dormancy holding state is shut down and entered to moisturizing variable frequency pump 22, when pressure sensor 26 detect heating water return pipe 28 pressure higher than setting constant voltage value and reach setting super-pressure force value and above time, magnetic valve 2 24 opens sluicing, pressure release automatically, when heating water return pipe 28 pressure recover is to the backwater constant voltage value set, magnetic valve 2 24 cuts out, when pressure sensor 26 detect heating water return pipe 28 pressure lower than setting water deprivation stress value and following time, system will judge heating water return pipe 28 lack of water, circulating pump 25 stoppage protection is also reported to the police, when heating water return pipe 28 pressure recover is to the backwater constant voltage value set, circulating pump 25 automatically starts and recovers normal operation.
Claims (5)
1. a double source enclosed heat-exchange unit is primarily of heat exchanger one, heat exchanger two, moisturizing variable frequency pump, circulating pump, pressure sensor, indoor temperature transmitter and switch board composition, it is characterized in that, the secondary side import of heat exchanger two connects heating water inlet pipe two, heating water inlet pipe two is connected with heating water return pipe again, the secondary side outlet of heat exchanger two connects heating outlet pipe two, heating outlet pipe two is connected with the secondary side import of heat exchanger one by heating water inlet pipe one again, the secondary side outlet of heat exchanger one is connected with heating outlet pipe one, heating outlet pipe is connected with heating and supplying water pipe again and again, shunt valve tee joint is also provided with between heating water inlet pipe two and heating outlet pipe two, and heating water inlet pipe two is equipped with magnetic valve one, magnetic valve three shunt valve three is equipped with, heating outlet pipe two is provided with temperature sensor five, shunt valve four connection is provided with between heating water inlet pipe one and heating outlet pipe one, heating water inlet pipe one is equipped with magnetic valve four, magnetic valve five shunt valve four is equipped with, heating outlet pipe one is provided with temperature sensor six.
2. double source enclosed heat-exchange unit according to claim 1, it is characterized in that, the primary side of heat exchanger one is connected with thermal source one feed pipe and thermal source one return pipe respectively, and thermal source one feed pipe is equipped with temperature-sensing valve one, temperature sensor one is provided with after temperature-sensing valve one, thermal source one return pipe is equipped with ultrasonic flowmeter one, temperature sensor two is provided with after ultrasonic flowmeter one, shunt valve one is also provided with between thermal source one feed pipe and thermal source one return pipe, and shunt valve one be connected to thermal source one feed pipe temperature-sensing valve one before and thermal source one return pipe temperature sensor two after, temperature sensor one, temperature sensor two is connected with heat energy integrating instrument one respectively with ultrasonic flowmeter one.
3. double source enclosed heat-exchange unit according to claim 1, it is characterized in that, the primary side of heat exchanger two is connected with thermal source two feed pipe and thermal source two return pipe respectively, and thermal source two feed pipe is equipped with temperature-sensing valve two, temperature sensor three is provided with after temperature-sensing valve two, thermal source two return pipe is equipped with ultrasonic flowmeter two, temperature sensor four is provided with after ultrasonic flowmeter two, shunt valve two is also provided with between thermal source two feed pipe and thermal source two return pipe, and shunt valve two be connected to thermal source two feed pipe temperature-sensing valve two before and thermal source two return pipe temperature sensor four after, temperature sensor three, temperature sensor four is connected with heat energy integrating instrument two respectively with ultrasonic flowmeter two.
4. double source enclosed heat-exchange unit according to claim 1, it is characterized in that, heating water return pipe is provided with filter, and be provided with circulating pump after filter, heating water return pipe before circulating pump, after filter is also provided with pressure sensor, safety valve, expansion drum, and be connected with filling pipe and relief tube, and moisturizing variable frequency pump filling pipe is equipped with, magnetic valve two relief tube is equipped with.
5. double source enclosed heat-exchange unit according to claim 4, is characterized in that, walk around circulating pump and be also provided with bypass pipe and be connected with heating water return pipe, and bypass pipe is provided with check-valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410592487.7A CN104848298A (en) | 2014-10-30 | 2014-10-30 | Double-source closed type heat exchange unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410592487.7A CN104848298A (en) | 2014-10-30 | 2014-10-30 | Double-source closed type heat exchange unit |
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| CN104848298A true CN104848298A (en) | 2015-08-19 |
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| CN201410592487.7A Pending CN104848298A (en) | 2014-10-30 | 2014-10-30 | Double-source closed type heat exchange unit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091640A (en) * | 2015-09-10 | 2015-11-25 | 兰州兰石集团有限公司 | Plate type heat exchange unit for domestic hot water |
| CN105737398A (en) * | 2016-02-28 | 2016-07-06 | 山东省水利科学研究院 | Intelligent greenhouse constant-temperature water supply equipment |
| CN108131707A (en) * | 2018-02-09 | 2018-06-08 | 沈阳智通工程有限公司 | supply regulating method and device, heating system, storage medium and processor |
| CN108916983A (en) * | 2018-07-19 | 2018-11-30 | 杭州华电能源工程有限公司 | One kind Intelligent heating system associated with room temperature monitoring system and its heat supply method |
| CN110823292A (en) * | 2019-11-29 | 2020-02-21 | 杭州富斯水力流体科技有限公司 | Multifunctional hydraulic sensing device applied to hydraulic pipeline |
| CN112486227A (en) * | 2020-10-28 | 2021-03-12 | 中广核(乌兰察布)风力发电有限公司 | Control system and method for automatic control of pressure of cooling water system |
-
2014
- 2014-10-30 CN CN201410592487.7A patent/CN104848298A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091640A (en) * | 2015-09-10 | 2015-11-25 | 兰州兰石集团有限公司 | Plate type heat exchange unit for domestic hot water |
| CN105091640B (en) * | 2015-09-10 | 2017-03-01 | 兰州兰石集团有限公司 | A kind of domestic hot-water's plate-type heat-exchange unit |
| CN105737398A (en) * | 2016-02-28 | 2016-07-06 | 山东省水利科学研究院 | Intelligent greenhouse constant-temperature water supply equipment |
| CN108131707A (en) * | 2018-02-09 | 2018-06-08 | 沈阳智通工程有限公司 | supply regulating method and device, heating system, storage medium and processor |
| CN108916983A (en) * | 2018-07-19 | 2018-11-30 | 杭州华电能源工程有限公司 | One kind Intelligent heating system associated with room temperature monitoring system and its heat supply method |
| CN110823292A (en) * | 2019-11-29 | 2020-02-21 | 杭州富斯水力流体科技有限公司 | Multifunctional hydraulic sensing device applied to hydraulic pipeline |
| CN112486227A (en) * | 2020-10-28 | 2021-03-12 | 中广核(乌兰察布)风力发电有限公司 | Control system and method for automatic control of pressure of cooling water system |
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