CN101769553A - Circulating water heating system of secondary pump - Google Patents

Circulating water heating system of secondary pump Download PDF

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Publication number
CN101769553A
CN101769553A CN200810189841A CN200810189841A CN101769553A CN 101769553 A CN101769553 A CN 101769553A CN 200810189841 A CN200810189841 A CN 200810189841A CN 200810189841 A CN200810189841 A CN 200810189841A CN 101769553 A CN101769553 A CN 101769553A
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China
Prior art keywords
water
pump
pipe
primary
heat exchanger
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Pending
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CN200810189841A
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Chinese (zh)
Inventor
张明亮
王学成
夏伟光
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张明亮
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Priority to CN200810189841A priority Critical patent/CN101769553A/en
Publication of CN101769553A publication Critical patent/CN101769553A/en
Pending legal-status Critical Current

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Abstract

The invention provides a circulating water heating system of a secondary pump, consisting of a heating medium water inlet pipe, a heating medium water return pipe, a heat exchanger, a primary pump, a secondary pump, a bypass flow water mixer, a temperature control valve, a control cabinet and a tail-end heat user. The circulating water heating system is characterized in that the heating medium water inlet pipe is connected with a primary side inlet of the heat exchanger through the temperature control valve; the heating medium water return pipe is connected with the primary side outlet of the heat exchanger; a secondary side outlet of the heat exchanger is connected with a primary water inlet of the bypass flow water mixer through the primary water supply pipe; the primary water outlet of the bypass flow mixer is connected with the primary pump through the primary water return pipe and than is butted with a secondary side inlet of the heat exchanger. The invention adopts the primary pump constant flow and the secondary pump constant flow to operate so as to ensure that the system can automatically adapt to the load change of the tail-end heat user, controls the water supply temperature of the primary water supply pipe by matching outdoor temperature variation, and has the characteristics of reasonable design, reliable operation, high efficiency, energy saving, capability of automatically adapting to the flow variation of the secondary side tail-end heat user, and the like. The invention is particularly suitable for large and medium circulating water heating systems.

Description

Circulating water heating system of secondary pump
1, technical field
The present invention relates to a kind of circulating water heating system, specifically a kind of and heating agent carries out the circulating water heating system of secondary pump of indirect heat exchange.
2, background technology
The circulating water heating system of prior art mostly is pump circulating water heating pattern greatly No. one time, just the secondary side at heat exchanger adopts the one-level water circulating pump to carry out pressurized circulation, water circulating pump is constant flow control or the control of unsteady flow amount, and water circulating pump has the operation energy consumption height and is not easy to household metering or terminal hot user's unsteady flow amount demand when adopting constant flow control; When water circulating pump adopts the control of unsteady flow amount, be that secondary side recirculated water is omnidistance unsteady flow amount, like this, flow velocity by the heat exchanger secondary side also changes with the variation of circulating water flow, and the change in flow of heat exchanger will influence its coefficient of heat transfer, when the flow velocity of heat exchanger hour, its coefficient of heat transfer is just little, the heat exchange efficiency of heat exchanger is just low, and in large and medium-sized circulation, if system is easy to cause the hydraulic misadjustment of secondary side " the little temperature difference, big flow, high some consumption " and secondary side circulation pipe network when sub-load or little load operation.For overcoming one-level water circulating pump lift height, problem that pump power is big, in the secondary side circulation, there is minority to adopt the secondary water circulating pump to connect, be actually the dividing potential drop operation that the pumping pressure head of a system is divided into fully one-level pump and two stage pump series circulation, compare with a pump circulation, only be merely to have reduced the recirculated water pump lift, but correspondingly increased the initial cost and the trouble point of water circulating pump and control system, increased the complexity of system.
3, summary of the invention
In view of the deficiency that above-mentioned prior art exists, the invention provides a kind of reasonable in design, reliable, energy-efficient and can adapt to the circulating water heating system of secondary pump of changes in flow rate.
The technical solution adopted for the present invention to solve the technical problems is: circulating water heating system of secondary pump is by the heating agent water inlet pipe, the heating agent return pipe, heat exchanger, a pump, secondary pump, the shunting water-water jet, temperature-sensing valve, switch board and terminal hot user form, wherein, the heating agent water inlet pipe connects the primary side import of heat exchanger behind temperature-sensing valve, the heating agent return pipe connects the primary side outlet of heat exchanger, the secondary side outlet of heat exchanger connects a water inlet shunting water-water jet through a feed pipe, a water out of shunting water-water jet docks with the secondary side import of heat exchanger after the primary water pipe connects a pump, and on the primary water pipe, be connected to filling pipe and safety valve, and on a feed pipe, be provided with temperature control sensor.
Shunting water-water jet of the present invention is made up of cylindrical shell, a water inlet, water out, secondary water inlet and a secondary water out, wherein, a water inlet and a water out are located at the cylindrical shell two ends respectively, are provided with secondary water out and secondary water inlet in cylindrical shell one side successively along the water (flow) direction of a water inlet.The secondary water out of shunting water-water jet meets terminal hot user through the secondary water-supply pipe, dock with the secondary water inlet of shunting water-water jet after connecing secondary pump by the secondary return pipe again, and before the secondary pump import, be provided with filter, respectively be provided with temperature transmitter and pressure sensor on secondary water-supply pipe and the secondary return pipe.
Temperature-sensing valve of the present invention, temperature control sensor, a pump, secondary pump, temperature transmitter and pressure sensor are wired to switch board respectively, and by switch board lead-in wire to the outdoor outdoor temperature compensator that connects, wherein, temperature-sensing valve is automatically regulated its aperture according to the detected temperature of temperature control sensor on feed pipe, and temperature control sensor changes by predefined program automatically according to the detected temperatures of outdoor temperature compensator, the supply water temperature that reaches a feed pipe of heat exchanger secondary side changes according to outdoor temperature, when outdoor temperature is high, the supply water temperature of a feed pipe is just low, otherwise the supply water temperature of a feed pipe is just high.
A pump of the present invention is implemented constant flow control by switch board, guarantee the constant flow rate of a water in heat exchanger, guarantee the high efficient heat exchanging of heat exchanger, secondary pump then carries out the unsteady flow amount according to the hot user's of end load variations and controls automatically, when the hot user of end reached at full capacity, pump and secondary pump series operation were when the hot user of end is sub-load, system shunts by the operation of shunting water-water jet, and guarantees that all the time a discharge is constant.
The invention has the beneficial effects as follows, adopt the operation of pump constant flow and secondary pump variable flow, system can adapt to terminal hot user's load variations automatically, and cooperate outdoor temperature to change the supply water temperature of a feed pipe of control, have reasonable in design, reliable, energy-efficient, and can adapt to the terminal hot user's of secondary side characteristics such as changes in flow rate automatically, be particularly useful for large and medium-sized circulating water heating system.
4, description of drawings
Accompanying drawing 1 is a process structure schematic diagram of the present invention;
Accompanying drawing 2 is the structural configuration schematic diagram of shunting water-water jet of the present invention.
Among the figure, 1, the heating agent water inlet pipe, 2, temperature-sensing valve, 3, heat exchanger, 4, temperature control sensor, 5, a feed pipe, 6, the shunting water-water jet, 7, the primary water pipe, 8, a pump, 9, the heating agent return pipe, 10, filling pipe, 11, safety valve, 12, temperature transmitter, 13, the secondary water-supply pipe, 14, terminal hot user, 15, the secondary return pipe, 16, pressure sensor, 17, filter, 18, secondary pump, 19, outdoor temperature sensor, 20, switch board, 601, a water inlet, 602, the secondary water out, 603, cylindrical shell, 604, the secondary water inlet, 605, a water out.
5, the specific embodiment
Explain with regard to accompanying drawing 1 with below 2 pairs of circulating water heating system of secondary pump works of the present invention of accompanying drawing below.
As shown in Figures 1 and 2, circulating water heating system of secondary pump of the present invention is by heating agent water inlet pipe (1), heating agent return pipe (9), heat exchanger (3), a pump (8), secondary pump (18), shunting water-water jet (6), temperature-sensing valve (2), switch board (20) and terminal hot user (14) form, wherein, heating agent water inlet pipe (1) connects the primary side import of heat exchanger (3) behind temperature-sensing valve (2), heating agent return pipe (9) connects the primary side outlet of heat exchanger (3), the secondary side outlet of heat exchanger (3) connects a water inlet (601) of shunting water-water jet (6) through a feed pipe (5), a water out (605) of shunting water-water jet (6) docks with the secondary side import of heat exchanger (3) after primary water pipe (7) connects a pump (8), and on primary water pipe (7), be connected to filling pipe (10) and safety valve (11), and on a feed pipe (5), be provided with temperature control sensor (4).
Shunting water-water jet of the present invention (6) is made up of cylindrical shell (603), a water inlet (601), a water out (605), secondary water inlet (604) and secondary water out (602), wherein, a water inlet (601) and a water out (605) are located at cylindrical shell (603) two ends respectively, are provided with secondary water out (602) and secondary water inlet (604) in cylindrical shell (603) one sides successively along the water (flow) direction of a water inlet (601).The secondary water out (602) of shunting water-water jet (6) meets terminal hot user (14) through secondary water-supply pipe (13), connecing secondary pump (18) back by secondary return pipe (15) again docks with the secondary water inlet (604) of shunting water-water jet (6), and before secondary pump (18) import, be provided with filter (17), respectively be provided with temperature transmitter (12) and pressure sensor (16) on secondary water-supply pipe (13) and the secondary return pipe (15).
Temperature-sensing valve of the present invention (2), temperature control sensor (4), a pump (8), secondary pump (18), temperature transmitter (12) and pressure sensor (16) are wired to switch board (20) respectively, and by switch board (20) lead-in wire to the outdoor outdoor temperature compensator (19) that connects, wherein, temperature-sensing valve (2) is automatically regulated its aperture according to the detected temperature of temperature control sensor (4) on the feed pipe (5), and temperature control sensor (4) changes by predefined program automatically according to the detected temperatures of outdoor temperature compensator (19), the supply water temperature that reaches heat exchanger (a 3) feed pipe of secondary side (5) changes according to outdoor temperature, when outdoor temperature is high, the supply water temperature of a feed pipe (5) is just low, otherwise the supply water temperature of a feed pipe (5) is just high.
A pump of the present invention (8) is implemented constant flow control by switch board (20), guarantee the constant flow rate of a water in heat exchanger (3), guarantee the high efficient heat exchanging of heat exchanger (3), secondary pump (18) then carries out the unsteady flow amount according to the hot user's of end (14) load variations and controls automatically, when the hot user of end (14) reaches at full capacity, a pump (8) and secondary pump (18) series operation, when the hot user of end (14) is sub-load, system shunts by shunting water-water jet (6), and guarantees that all the time a discharge is constant.
Institute it should be noted that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, technical scheme of the present invention is made amendment or is equal to replacement, and do not break away from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of the claim scope of the present invention.

Claims (4)

1. a circulating water heating system of secondary pump is by the heating agent water inlet pipe, the heating agent return pipe, heat exchanger, a pump, secondary pump, the shunting water-water jet, temperature-sensing valve, switch board and terminal hot user form, it is characterized in that: the heating agent water inlet pipe connects the primary side import of heat exchanger behind temperature-sensing valve, the heating agent return pipe connects the primary side outlet of heat exchanger, the secondary side outlet of heat exchanger connects a water inlet shunting water-water jet through a feed pipe, a water out of shunting water-water jet docks with the secondary side import of heat exchanger after the primary water pipe connects a pump, and on the primary water pipe, be connected to filling pipe and safety valve, and on a feed pipe, be provided with temperature control sensor.
2. circulating water heating system of secondary pump according to claim 1, it is characterized in that: the shunting water-water jet is made up of cylindrical shell, a water inlet, water out, secondary water inlet and a secondary water out, wherein, a water inlet and a water out are located at the cylindrical shell two ends respectively, are provided with secondary water out and secondary water inlet in cylindrical shell one side successively along the water (flow) direction of a water inlet.
3. circulating water heating system of secondary pump according to claim 1, it is characterized in that: the secondary water out of shunting water-water jet meets terminal hot user through the secondary water-supply pipe, dock with the secondary water inlet of shunting water-water jet after connecing secondary pump by the secondary return pipe again, and before the secondary pump import, be provided with filter, respectively be provided with temperature transmitter and pressure sensor on secondary water-supply pipe and the secondary return pipe.
4. circulating water heating system of secondary pump according to claim 1, it is characterized in that: temperature-sensing valve, temperature control sensor, pump, secondary pump, temperature transmitter and a pressure sensor are wired to switch board respectively, and are gone between to the outdoor outdoor temperature compensator that connects by switch board.
CN200810189841A 2008-12-30 2008-12-30 Circulating water heating system of secondary pump Pending CN101769553A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200810189841A CN101769553A (en) 2008-12-30 2008-12-30 Circulating water heating system of secondary pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200810189841A CN101769553A (en) 2008-12-30 2008-12-30 Circulating water heating system of secondary pump

Publications (1)

Publication Number Publication Date
CN101769553A true CN101769553A (en) 2010-07-07

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CN200810189841A Pending CN101769553A (en) 2008-12-30 2008-12-30 Circulating water heating system of secondary pump

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101975417A (en) * 2010-11-22 2011-02-16 哈尔滨工业大学 Method for regulating critical zero differential pressure state of distributed water pump variable flow heat supply system
CN103175439A (en) * 2013-03-22 2013-06-26 北京咏辉飏能源科技发展有限公司 Heat exchange adaptive device
RU2676579C1 (en) * 2017-07-10 2019-01-09 Данфосс А/С Heating system
WO2021114726A1 (en) * 2019-12-09 2021-06-17 珠海格力电器股份有限公司 Gas hot water system and control method therefor
WO2021114727A1 (en) * 2019-12-09 2021-06-17 珠海格力电器股份有限公司 Heating system and control method therefor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101975417A (en) * 2010-11-22 2011-02-16 哈尔滨工业大学 Method for regulating critical zero differential pressure state of distributed water pump variable flow heat supply system
CN101975417B (en) * 2010-11-22 2012-11-07 哈尔滨工业大学 Method for regulating critical zero differential pressure state of distributed water pump variable flow heat supply system
CN103175439A (en) * 2013-03-22 2013-06-26 北京咏辉飏能源科技发展有限公司 Heat exchange adaptive device
RU2676579C1 (en) * 2017-07-10 2019-01-09 Данфосс А/С Heating system
WO2021114726A1 (en) * 2019-12-09 2021-06-17 珠海格力电器股份有限公司 Gas hot water system and control method therefor
WO2021114727A1 (en) * 2019-12-09 2021-06-17 珠海格力电器股份有限公司 Heating system and control method therefor

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Open date: 20100707