CN204438291U - The mixed water direct-heating system hot systems that first-level pipeline network, secondary network directly connect - Google Patents
The mixed water direct-heating system hot systems that first-level pipeline network, secondary network directly connect Download PDFInfo
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- CN204438291U CN204438291U CN201520059547.9U CN201520059547U CN204438291U CN 204438291 U CN204438291 U CN 204438291U CN 201520059547 U CN201520059547 U CN 201520059547U CN 204438291 U CN204438291 U CN 204438291U
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Abstract
The utility model relates to a kind of first-level pipeline network, the mixed water direct-heating system hot systems that secondary network directly connects, it is characterized in that, comprise thermal substation (W), first-level pipeline network feed pipe (8), first-level pipeline network return pipe (9), water water stream injection pump (1), safety valve (5), electric control valve (6), turn off gate valve (7), plate type heat exchanger (2), first-level pipeline network backwater booster (3), secondary network water circulating pump (4), secondary network feed pipe (10) and secondary network return pipe (11), described thermal substation is first-level pipeline network, the heat-exchange system of secondary network arranges place.Advantage is: adopt the direct-connected system form of mixed water to connect first-level pipeline network, secondary network by water water ejector, do not need to arrange the equipment set such as water treatment and moisturizing, facility and accessories apparatus at thermal substation separately, directly utilize unified water treatment and the moisturizing of thermal source, save management in the land area of thermal substation, reduction equipment and construction investment, simplification station.
Description
Technical field
The utility model relates to a kind of mixed water direct-heating system hot systems first-level pipeline network, secondary network directly connected, be system first-level pipeline network and secondary network being directly connected heat supply by water water stream injection pump, change existing first-level pipeline network and secondary network are connected heat supply indirectly mode by plate type heat exchanger.
Background technology
In the northern area of China, winter heating is the indispensable basic living demand of resident living.Along with the popularization of cities and towns large-scale centralized heat supply, the secondary network system of " thermal source-thermal substation-user " indirect heating mode is adopted to be popularized; Because the pressure between first-level pipeline network and secondary network, temperature difference are comparatively large, thermal source and heat user adopt indirect connections, and centre arranges the plate type heat exchanger indirect heat exchange such as (or shell-and-tube heat exchanger), the circular flow separately of two systems; One-level, secondary network indirect heat exchange system need to build intermediate heat transfer station, inner supporting the operational outfits such as plate heat-exchange station, secondary network circulating pump, secondary network demineralized water treating apparatus, softening water tank and small pump are set, and auxiliary valve, electrically and control device etc.Problems existing is: system complex in thermal substation, construction investment is large, operating cost is high, there is restriction loss, waste energy in first-level pipeline network in standing, indirect heat exchange exists that heat-exchange temperature end is poor, the invalid exergy destruction that improves thermal source, while be also unfavorable for effective utilization of low temperature exhaust heat thermal source.Water water stream injection pump general principle is the vacuum acquirement device utilizing fluid to come transferring energy and quality, and it is widely used in chemical industry, pharmaceuticals industry; Water water stream injection pump is by fluid potential energy and dynamic transformation of energy, high-pressure fluid is mixed with the low-pressure fluid of injection, reach and consume high pressure, the fluid-mixing that improves low pressure, obtain isostasy, water water stream injection pump equipment realizes first-level pipeline network to above-mentioned performance in order to introduce, secondary network mixes water direct-heating system hot systems and to provide the foundation condition.
Summary of the invention
For overcoming the defect of prior art, the mixed water direct-heating system hot systems that the utility model provides a kind of first-level pipeline network, secondary network directly connects.The technical solution of the utility model is: first-level pipeline network, the mixed water direct-heating system hot systems that secondary network directly connects, comprise thermal substation, first-level pipeline network feed pipe (8), first-level pipeline network return pipe (9), water water stream injection pump (1), safety valve (5), electric control valve (6), turn off gate valve (7), plate type heat exchanger (2), first-level pipeline network backwater booster (3), secondary network water circulating pump (4), secondary network feed pipe (10) and secondary network return pipe (11), described thermal substation is first-level pipeline network, the heat-exchange system of secondary network arranges place, the high pressure intake of described water water stream injection pump (1) is communicated with first-level pipeline network feed pipe (8), the low-pressure water import of this water water stream injection pump (1) is communicated with secondary network return pipe (11) with first-level pipeline network return pipe (9), the mixed water exports of water water stream injection pump (1) is communicated with secondary network return pipe (11) with secondary network feed pipe (10), the first-level pipeline network side water inlet of described plate type heat exchanger (2) and delivery port communicate with first-level pipeline network feed pipe (8) and first-level pipeline network return pipe (9) respectively, the water inlet of secondary network side and delivery port communicate with secondary network feed pipe (10) and secondary network return pipe (11) respectively, wherein, in low-pressure water import department and high pressure intake place with water water stream injection pump (1), electric control valve (6) is installed, the water inlet of the first-level pipeline network side of plate type heat exchanger (2) and the water outlet of secondary network side are provided with electric control valve (6), at water water ejector mixed water exports place mounting safety valve (5), first-level pipeline network return pipe (9) is upper installs first-level pipeline network backwater booster (3), and secondary network feed pipe (10) is upper installs secondary network water circulating pump (4), described first-level pipeline network return pipe (9), secondary network feed pipe (10), secondary network return pipe (11) are provided with and turn off gate valve (7).
Described water water stream injection pump comprise be communicated with successively receiving chamber (12), mixing section (13) and diffuser (14), converging transition (15) is positioned at the inside of receiving chamber (12), and coaxially arrange with receiving chamber (12), the flared end of this converging transition (15) is water under high pressure import (16), the flared end of diffuser (14) is mixed water exports (17), and the sidepiece of described receiving chamber (12) is provided with low-pressure water import (18).
The utility model has the advantages that: adopt the direct-connected system form of mixed water to connect first-level pipeline network, secondary network by water water ejector, do not need to arrange the equipment set such as water treatment and moisturizing, facility and accessories apparatus at thermal substation separately, directly utilize unified water treatment and the moisturizing of thermal source, save management in the land area of thermal substation, reduction equipment and construction investment, simplification station.The mixed direct-connected system of water substitutes indirect heat exchange system, and eliminate heat-exchange temperature end poor, first-level pipeline network return water temperature declines greatly, improves the thermal efficiency of thermal source, simultaneously also for utilizing various low temperature exhaust heat thermal source to provide precondition.The mixed direct-connected system of water makes the confession/backwater temperature difference of first-level pipeline network side widen, and reduces the circular flow of first-level pipeline network, and the resistance of ducting declines, and the operating cost of first-level pipeline network water circulating pump reduces, power consumption and all corresponding minimizing of water consumption.The mixed direct-connected system of water utilizes water water stream injection pump to reclaim the overbottom pressure of first-level pipeline network, drives mixed secondary network to supply water, and reduces secondary network circulating pump head and power, reaches energy saving in running.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first working method of the present utility model;
Fig. 2 is the structural representation of the second working method of the present utility model;
Fig. 3 is the structural representation of the third working method of the present utility model;
Fig. 4 is the structural representation of water water stream injection pump of the present utility model.
Detailed description of the invention
Further describe the utility model below in conjunction with specific embodiment, advantage and disadvantage of the present utility model will be more clear along with description.But these embodiments are only exemplary, do not form any restriction to scope of the present utility model.It will be understood by those skilled in the art that and do not departing under spirit and scope of the present utility model and can modify to the details of technical solutions of the utility model and form or replace, but these amendments and replacement all fall in protection domain of the present utility model.
See Fig. 1 to Fig. 4, the utility model relates to a kind of first-level pipeline network, the mixed water direct-heating system hot systems that secondary network directly connects, comprises thermal substation W, first-level pipeline network feed pipe 8, first-level pipeline network return pipe 9, water water stream injection pump 1, safety valve 5, electric control valve 6, turn off gate valve 7, plate type heat exchanger 2, first-level pipeline network backwater booster 3, secondary network water circulating pump 4, secondary network feed pipe 10 and secondary network return pipe 11, described thermal substation W is first-level pipeline network, the heat-exchange system of secondary network arranges place, the high pressure intake of described water water stream injection pump 1 is communicated with first-level pipeline network feed pipe 8, the low-pressure water import of this water water stream injection pump 1 is communicated with secondary network return pipe 11 with first-level pipeline network return pipe 9, the mixed water exports of water water stream injection pump 1 is communicated with secondary network return pipe 11 with secondary network feed pipe 10, the first-level pipeline network side water inlet of described plate type heat exchanger 2 and delivery port communicate with first-level pipeline network feed pipe 8 and first-level pipeline network return pipe 9 respectively, and the water inlet of secondary network side and delivery port communicate with secondary network feed pipe 10 and secondary network return pipe 11 respectively, wherein, in low-pressure water import department and high pressure intake place with water water stream injection pump 1, electric control valve 6 is installed, the water inlet of the first-level pipeline network side of plate type heat exchanger 2 and the water outlet of secondary network side are provided with electric control valve 6, at water water ejector mixed water exports place mounting safety valve 5, first-level pipeline network return pipe 9 is installed first-level pipeline network backwater booster 3, secondary network feed pipe 10 is installed secondary network water circulating pump 4, described first-level pipeline network return pipe 9, secondary network feed pipe 10, secondary network return pipe 11 are provided with and turn off gate valve 7.The difference of each working method below, then turn off gate valve 7 according to control different with the open and-shut mode of electric control valve 6 caused.
See Fig. 1, be the first embodiment of the present utility model, this embodiment for be that plate type heat exchanger is for subsequent use, when water water stream injection pump is as primary heater, described plate type heat exchanger 2 is as subsequent use, do not run, refer in Fig. 1 the open and-shut mode turning off gate valve 7 and electric control valve 6, represent that the i.e. shutoff gate valve 7 of valve closing and electric control valve 6 are in closure state, remaining is then in opening, and described water water stream injection pump 1 is as first-level pipeline network, the heat of secondary network and flow switching equipment, its operation principle is: carry out 120 DEG C of water under high pressures of self-heat power through first-level pipeline network feed pipe 8, enter water water stream injection pump 1, with a part 50 DEG C of heating low pressure return from secondary network return pipe 11, mixed by the Conversion of Energy of water water stream injection pump 1, obtain 75 DEG C of mixing waters of temperature and pressure equilibrium, enter secondary network feed pipe 10, and after secondary network circulating pump 4 boosts, deliver to heating user, another part 50 DEG C of heating low pressure return of secondary network return pipe 11 are after the boosting of first-level pipeline network backwater booster 3, get back to first-level pipeline network return pipe 9, deliver to heat-source Cycles heating again, safety valve 5 is arranged on water water stream injection pump 1 mixed water exports, prevent secondary network feed pipe 10 superpressure, when water water stream injection pump 1 runs, payload according to heating user regulates electric control valve 6 aperture, control the water mixing proportion of first-level pipeline network water supply and secondary network backwater, reach and control and regulate the object of heating load, turn off gate valve 7 and be arranged on each section of water water stream injection pump 1 and enter, on outlet conduit, play shutoff effect.
See Fig. 2, for the second embodiment of the present utility model, this embodiment for be water water stream injection pump heat as spike as primary heater, plate type heat exchanger time, refer in Fig. 2 the open and-shut mode turning off gate valve 7 and electric control valve 6, represent that i.e. shutoff gate valve 7 and the electric control valve 6 of valve closing are in closure state, remaining is then in opening, and described plate type heat exchanger 2 is in parallel at first-level pipeline network side and water water stream injection pump 1, connect with water water stream injection pump 1 in secondary network side, its operation principle is: carry out 120 DEG C of water under high pressures of self-heat power through first-level pipeline network feed pipe 8, a part enters water water stream injection pump 1, with a part 50 DEG C of heating low pressure return from secondary network return pipe 11, mixed by the Conversion of Energy of water water stream injection pump 1, obtain the mixing water of temperature and pressure equilibrium, boost through secondary network circulating pump 4 again, enter plate type heat exchanger 2 to carry out spike and be heated to 75 DEG C, be sent to heating user by secondary network feed pipe 10, another part 50 DEG C of heating low pressure return of secondary network return pipe 11 are after the boosting of first-level pipeline network backwater booster 3, get back to first-level pipeline network return pipe 9, deliver to heat-source Cycles heating again, plate type heat exchanger 2 is in parallel with water water stream injection pump 1 in first-level pipeline network side, and from first-level pipeline network feed pipe 8 splitter section flow as spike heat source, safety valve 5 is arranged on water water stream injection pump 1 mixed water exports, prevent secondary network feed pipe 10 superpressure, during system cloud gray model, water water stream injection pump 1 is regulated to enter according to the payload of heating user, outlet electric control valve 6 and plate type heat exchanger 2 enter, the aperture of outlet electric control valve 6, control and regulate heating load, turning off gate valve 7 and be arranged on water water stream injection pump 1 and plate type heat exchanger 2 each section and enter, on outlet conduit, play shutoff effect.
See Fig. 3, be the third embodiment of the present utility model, this embodiment for be that plate type heat exchanger is as primary heater, when water water stream injection pump is as water replanishing device, refer to the open and-shut mode of shutoff gate valve 7 in Fig. 3 and electric control valve 6, represent that i.e. shutoff gate valve 7 and the electric control valve 6 of valve closing are in closure state, remaining is then in opening, and its operation principle is: from the water under high pressure of first-level pipeline network feed pipe 8, a part enters water water stream injection pump 1, with a part of heating low pressure return from secondary network return pipe 11, mixed by the Conversion of Energy of water water stream injection pump 1, obtain the mixing water of temperature and pressure equilibrium, access secondary network circulating pump 4 entrance, as moisturizing and the constant pressure arrangement of secondary network, first-level pipeline network feed pipe 8, first-level pipeline network return pipe 9, secondary network feed pipe 10, secondary network return pipe 11 respectively with the entering of plate type heat exchanger 2, outlet connects, carry out indirect heat exchange, first-level pipeline network confession/return water temperature 120/60 DEG C, secondary network confession/return water temperature 75/50 DEG C (or 40/30 DEG C), plate type heat exchanger 2 is as heating user thermal source, and secondary network circulating pump 4 provides secondary network circulation power, and safety valve 5 is arranged on water water stream injection pump 1 mixed water exports, prevent secondary network feed pipe 10 superpressure, during system cloud gray model, water water stream injection pump 1 is regulated to enter according to secondary network pressure oscillation situation, the aperture of outlet electric control valve 6, control and regulate secondary network rate of water make-up, heating user heating demand size is controlled by the aperture of the import and export electric control valve 6 of plate type heat exchanger 2, turns off gate valve 7 and is arranged on water water stream injection pump 1 and plate type heat exchanger 2 each section and enters, on outlet conduit, play shutoff effect.
Described water water stream injection pump comprise be communicated with successively receiving chamber 12, mixing section 13 and diffuser 14, converging transition 15 is positioned at the inside of receiving chamber 12, and coaxially arrange with receiving chamber 12, the flared end of this converging transition 15 is water under high pressure import 16, the flared end of diffuser 14 is mixed water exports 17, and the sidepiece of described receiving chamber 12 is provided with low-pressure water import 18.
Its operation principle is: the first-level pipeline network of HTHP supplies water and enters water under high pressure import 16, penetrate with the nozzle of very high speed from converging transition 15, negative pressure is formed in receiving chamber 12, the secondary network backwater of low-temp low-pressure is entered receiving chamber 12 by low-pressure water import 18 injection, the first-level pipeline network water supply water of HTHP changes potential energy into kinetic energy at converging transition 15, and in receiving chamber 12, part kinetic energy is passed to the secondary network backwater of low-temp low-pressure, rear two strands of water enter in mixing section 13, carry out speed equilibrium, also raise with pressure, the kinetic energy of mixing water progressively changes potential energy into, enter diffuser 14 again, continuation raises by pressure, finally by mixed water exports 17, be sent to secondary network to supply water, at mixed water exports 17 place, the pressure P 3 of mixing water is lower than the pressure P 1 at water under high pressure import 16 place, but higher than entering the pressure P 2 at low-pressure water import 18 place, improve the pressure of injection low-pressure water and directly do not consume mechanical energy, this is the main performance of water water stream injection pump.
Claims (2)
1. a first-level pipeline network, the mixed water direct-heating system hot systems that secondary network directly connects, it is characterized in that, comprise thermal substation, first-level pipeline network feed pipe (8), first-level pipeline network return pipe (9), water water stream injection pump (1), safety valve (5), electric control valve (6), turn off gate valve (7), plate type heat exchanger (2), first-level pipeline network backwater booster (3), secondary network water circulating pump (4), secondary network feed pipe (10) and secondary network return pipe (11), described thermal substation is first-level pipeline network, the heat-exchange system of secondary network arranges place, the high pressure intake of described water water stream injection pump (1) is communicated with first-level pipeline network feed pipe (8), the low-pressure water import of this water water stream injection pump (1) is communicated with secondary network return pipe (11) with first-level pipeline network return pipe (9), the mixed water exports of water water stream injection pump (1) is communicated with secondary network return pipe (11) with secondary network feed pipe (10), the first-level pipeline network side water inlet of described plate type heat exchanger (2) and delivery port communicate with first-level pipeline network feed pipe (8) and first-level pipeline network return pipe (9) respectively, the water inlet of secondary network side and delivery port communicate with secondary network feed pipe (10) and secondary network return pipe (11) respectively, wherein, in low-pressure water import department and high pressure intake place with water water stream injection pump (1), electric control valve (6) is installed, the water inlet of the first-level pipeline network side of plate type heat exchanger (2) and the water outlet of secondary network side are provided with electric control valve (6), at water water ejector mixed water exports place mounting safety valve (5), first-level pipeline network return pipe (9) is upper installs first-level pipeline network backwater booster (3), and secondary network feed pipe (10) is upper installs secondary network water circulating pump (4), described first-level pipeline network return pipe (9), secondary network feed pipe (10), secondary network return pipe (11) are provided with and turn off gate valve (7).
2. the mixed water direct-heating system hot systems that directly connects of first-level pipeline network according to claim 1, secondary network, it is characterized in that, described water water stream injection pump comprise be communicated with successively receiving chamber (12), mixing section (13) and diffuser (14), converging transition (15) is positioned at the inside of receiving chamber (12), and coaxially arrange with receiving chamber (12), the flared end of this converging transition (15) is water under high pressure import (16), the flared end of diffuser (14) is mixed water exports (17), and the sidepiece of described receiving chamber (12) is provided with low-pressure water import (18).
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105115026A (en) * | 2015-07-20 | 2015-12-02 | 北京建筑大学 | Large-temperature-difference heat exchanger of heat exchange station of primary heat supply network of heat supply system |
| CN107894019A (en) * | 2018-01-02 | 2018-04-10 | 烟台清泉实业有限公司 | A kind of heating system and control method for reducing one-level net return water temperature |
| CN109268908A (en) * | 2018-09-03 | 2019-01-25 | 周俊云 | Compressor-free effective warming temperature difference heat pump |
| CN109340902A (en) * | 2018-10-17 | 2019-02-15 | 余宝法 | A kind of adjustment type water stream injection pump is for heat balance system and its balance method |
| RU193051U1 (en) * | 2018-07-11 | 2019-10-11 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный технический университет" (ВГТУ) | DEVICE FOR REGULATING WATER TEMPERATURE FOR HEATING SYSTEMS |
| CN114738814A (en) * | 2022-04-25 | 2022-07-12 | 中国海洋大学 | Energy-saving water-mixing heat supply unit |
| RU2825920C1 (en) * | 2024-03-05 | 2024-09-02 | Евгений Борисович Певнев | Heat carrier parameters control unit with automatic control system |
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2015
- 2015-01-28 CN CN201520059547.9U patent/CN204438291U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115026A (en) * | 2015-07-20 | 2015-12-02 | 北京建筑大学 | Large-temperature-difference heat exchanger of heat exchange station of primary heat supply network of heat supply system |
| CN105115026B (en) * | 2015-07-20 | 2018-11-27 | 北京建筑大学 | The big temperature difference heat exchanger of heat supply network heat exchange station of heating system |
| CN107894019A (en) * | 2018-01-02 | 2018-04-10 | 烟台清泉实业有限公司 | A kind of heating system and control method for reducing one-level net return water temperature |
| RU193051U1 (en) * | 2018-07-11 | 2019-10-11 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный технический университет" (ВГТУ) | DEVICE FOR REGULATING WATER TEMPERATURE FOR HEATING SYSTEMS |
| CN109268908A (en) * | 2018-09-03 | 2019-01-25 | 周俊云 | Compressor-free effective warming temperature difference heat pump |
| CN109340902A (en) * | 2018-10-17 | 2019-02-15 | 余宝法 | A kind of adjustment type water stream injection pump is for heat balance system and its balance method |
| CN114738814A (en) * | 2022-04-25 | 2022-07-12 | 中国海洋大学 | Energy-saving water-mixing heat supply unit |
| RU2825920C1 (en) * | 2024-03-05 | 2024-09-02 | Евгений Борисович Певнев | Heat carrier parameters control unit with automatic control system |
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