CN205897300U - Big difference in temperature heating system of distributing type - Google Patents

Big difference in temperature heating system of distributing type Download PDF

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Publication number
CN205897300U
CN205897300U CN201620637169.2U CN201620637169U CN205897300U CN 205897300 U CN205897300 U CN 205897300U CN 201620637169 U CN201620637169 U CN 201620637169U CN 205897300 U CN205897300 U CN 205897300U
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China
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low
temperature
steam
return water
heat
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Expired - Fee Related
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CN201620637169.2U
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Chinese (zh)
Inventor
王清正
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Chaoteng Thermal Group Co Ltd
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Individual
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Abstract

The utility model discloses a big difference in temperature heating system of distributing type relates to the big difference in temperature heat supply field of coal -fired steam power plant, include: once the net supplies wet return, high -temperature return water vacuum flasher, low temperature return water vacuum flasher, steam -jet ejector formula heat pump nozzle, low pressure steam to accept room, mixing chamber, diffusion room, heat exchanger I, heat exchanger II, secondary network wet return and low temperature return water conveyer pipe, the beneficial effects of the utility model are that: can acquire the heat in the low temperature return water with very low running cost, reduce the interior plate heat exchanger of second grade heat exchange station and once net the return water temperature of side to widen the confession of once netting and rise again poorly, increase the heat load of the circulating water once netted, improve the transmission & distribution efficiency of once netting.

Description

A kind of distributed great temperature difference heat supply system
Technical field
The utility model is related to a kind of distributed great temperature difference heat supply system, belongs to Hazards in Power Plant great temperature difference heat supply field.
Background technology
With the constantly improve of the attention to UTILIZATION OF VESIDUAL HEAT IN for the people and relevant art, the higher waste heat of grade is (as high temperature cigarette Gas) mostly obtain effectively utilizes.And for the low temperature exhaust heat that grade is low, quantity is big, such as circulating cooling water of power plant waste heat, combustion gas The condensation heat of flue gas of boiler or gas turbine and some industrial low-grade remaining heats etc., the research and development of its effectively utilizes technology are still one Problem urgently to be resolved hurrily.Why the recycling difficulty of low grade residual heat is high, and reason of searching to the bottom is exactly these waste heats and confession The taste of heat requires to mismatch.If the big temperature difference of Hazards in Power Plant can be used in and supplies using the taste of correlation technique lifting low temperature exhaust heat Hot aspect, can greatly improve efficiency of energy utilization.
Great temperature difference heat supply technology refers to make a pipe network return water temperature be reduced to less than 30 DEG C at secondary heat exchange station, widens Confession, backwater temperature difference, therefore referred to as great temperature difference heat supply technology.Because heat supply network return water temperature is reduced to less than 30 DEG C, can be more Easily reclaim plant condenser waste heat, thus laying the foundation for improving system energy utilization ratio.Secondary heat exchange station big temperature difference skill Art is suggested for many years, but real enforcement is still less, and technical bottleneck here mainly has two, and one is traditional big temperature difference Heat transfer technology transformation needs to use absorption heat pump, and the floor space of absorption heat pump is larger deposits for traditional heat exchange station In the difficult problem failing to lay down;Two is to need electronic or steam-operating power source using absorption heat pump, and for a built heat exchange For standing, extra electric load is provided to drive absorption heat pump substantially can not possibly implement.In addition the electronic load of increase is also Heat exchange cost increase.
Utility model content
In order to solve above-mentioned technical deficiency, the utility model discloses a kind of distributed great temperature difference heat supply system.
The utility model be the technical scheme is that a kind of distributed great temperature difference heat supply system, comprising: once net supplies back Water pipe, high-temperature tempering vacuum flash vaporizer, low-temperature return water vacuum flash vaporizer, steam jet heat pump nozzle, low-pressure steam receiving chamber, Mixing chamber, diffusion room, heat exchanger i, heat exchanger ii, secondary network return pipe and low-temperature return water delivery pipe.Described high-temperature tempering vacuum Flash vessel side connects once net and supplies return pipe, using low vacuum steam flash technology, part high-temperature tempering is become high pressure and steams Vapour, top connects to steam jet heat pump nozzle, makes the high steam of generation be transported to steam jet heat pump, side connects To heat exchanger ii;Described low-temperature return water vacuum flash vaporizer side connects low-temperature return water delivery pipe, and part low-temperature return water is become low Pressure steam, top connects to low-pressure steam receiving chamber, and the low-temperature return water temperature in low-temperature return water delivery pipe reduces further simultaneously; Described jet type heat pump nozzle is tapered, and one end connects high-temperature tempering vacuum flash vaporizer, one end connection mixing chamber and low-pressure steam Receiving chamber, high steam passes through to produce high velocity air during jet type heat pump nozzle, produces low-pressure area in nozzle exit, by low pressure Steam accepts indoor low-pressure steam and sucks mixing interior, and high steam and low-pressure steam carry out good mixing;Described heat exchanger i Side connects mixed vapour diffusion room end, side connecting secondary net return pipe, and heating backwater flows through heat exchanger i from the bottom up, Mixed vapour heats backwater, is connected to low-temperature return water delivery pipe under heat exchanger i, hydrophobic is transported to low temperature by what mixed vapour condensed Backwater delivery pipe;Described heat exchanger ii left upper end connects once net and supplies return pipe, and lower-left end connects low-temperature return water delivery pipe, bottom right Terminate into secondary network return pipe, make high-temperature tempering and secondary network backwater carry out heat exchange.
Described once net is made up of exotic material for return pipe, and once net supplies backwater to be 90 degrees Celsius;Described secondary network The interior return water temperature of return pipe (10) is 40 degrees Celsius, and the interior return water temperature of low-temperature return water delivery pipe (11) is 50 degrees Celsius.
Low-pressure steam in described low-pressure steam receiving chamber (5) both can be the exhaust steam diffusing or condensate The flash steam producing.
The beneficial effects of the utility model are: can obtain the heat in low-temperature return water with very low operating cost, reduce The return water temperature of net side of plate type heat exchanger in secondary heat exchange station, thus widen the confession once netted rising again difference, increases once net Recirculated water heat load, improve the transmission & distribution efficiency once netted.
Brief description
Fig. 1 is structural representation of the present utility model.
In figure: 1. once net supplies return pipe, 2. high-temperature tempering vacuum flash vaporizer, 3. low-temperature return water vacuum flash vaporizer, 4. steams Vapour jet type heat pump nozzle, 5. low-pressure steam receiving chamber, 6. mixing chamber, 7. diffusion room, 8. heat exchanger i, 9. heat exchanger ii, 10 2 Secondary net return pipe, 11. low-temperature return water delivery pipes.
Specific embodiment
In order to be able to be more clearly understood that the technical solution of the utility model, further to the utility model below in conjunction with the accompanying drawings Explanation.
A kind of distributed great temperature difference heat supply system as depicted, comprising: once net supplies return pipe 1, high-temperature tempering vacuum Flash vessel 2, low-temperature return water vacuum flash vaporizer 3, steam jet heat pump nozzle 4, low-pressure steam receiving chamber 5, mixing chamber 6, diffusion Room 7, heat exchanger i8, heat exchanger ii9, secondary network return pipe 10 and low-temperature return water delivery pipe 11.Described high-temperature tempering vacuum flashing Device 2 side connects once net and supplies return pipe 1, using low vacuum steam flash technology, part high-temperature tempering is become high steam, Top connects to steam jet heat pump nozzle 4, makes the high steam of generation be transported to steam jet heat pump, side connect to Heat exchanger ii9.Described low-temperature return water vacuum flash vaporizer 3 side connects low-temperature return water delivery pipe 11, and top connects to low-pressure steam Receiving chamber 5, part low-temperature return water is become low-pressure steam, and the low-temperature return water temperature in low-temperature return water delivery pipe 11 is further simultaneously Reducing, thus widen the confession once netted rising again difference, increasing the heat load of the recirculated water once netted, improve the transmission & distribution effect once netted Rate.Described jet type heat pump nozzle 4 is tapered, and one end connects high-temperature tempering vacuum flash vaporizer 2, one end connection mixing chamber 6 and low Pressure steam receiving chamber 5, high steam passes through to produce high velocity air during jet type heat pump nozzle 4, produces low pressure in nozzle exit Area, low-pressure steam in low-pressure steam receiving chamber 5 is sucked in mixing chamber 6, high steam and low-pressure steam carry out good mixing. Described heat exchanger i8 side connects mixed vapour diffusion room 7 end, side connecting secondary net return pipe 10, and heating backwater is from lower past On flow through heat exchanger i8, mixed vapour heats backwater, is connected to low-temperature return water delivery pipe 11 under heat exchanger i8, and mixed vapour is cold Solidifying hydrophobic it is transported to low-temperature return water delivery pipe 11.Described heat exchanger ii9 left upper end connects high-temperature tempering delivery pipe 1, lower-left end Connect low-temperature return water delivery pipe 11, bottom righthand side accesses secondary network return pipe 10, make high-temperature tempering and secondary network backwater carry out heat friendship Change.Described once net is made up of exotic material for return pipe 1, and once net supplies backwater to be 90 degrees Celsius.Described secondary network backwater In pipe 10, return water temperature is 40 degrees Celsius, and in low-temperature return water delivery pipe 11, return water temperature is 50 degrees Celsius.Described low-pressure steam connects Both can be the flash steam that the exhaust steam diffusing or condensate produce by the low-pressure steam in room 5.
Jet type heat pump operation principle: with the energy difference before and after steam pressure-reducing as power, produce when high steam is by nozzle Raw high velocity air, produces low-pressure area in nozzle exit, and in this region by low-pressure steam inhalation device, high steam is expanding While compression and low pressure steam, improve the grade of low-pressure steam with the abundant pressure of high steam, then carried out well by mixing chamber Mixing, mixed steam passes through the diffusion room recovered part pressure loss again, and after reaching the vapor (steam) temperature of requirement, supply heat supply network makes With.
Distributed great temperature difference heat supply System Working Principle: the confession backwater of one net is all become using low vacuum steam flash technology Become steam, due to supply water temperature height so steam pressure is big, recycle jet current principle, by the low-pressure steam Hybrid Heating of backwater side The backwater that secondary network arm distributes, after low temperature side backwater heat release, temperature reduces, thus reaching secondary station one net great temperature difference heat supply Effect.
The above is only better embodiment of the present utility model, therefore described in all patent claims according to the utility model Construction, the equivalence changes done of feature and principle or modification, be all included in the utility model patent claim.

Claims (4)

1. a kind of distributed great temperature difference heat supply system it is characterised in that: include: once net supply return pipe (1), high-temperature tempering vacuum Flash vessel (2), low-temperature return water vacuum flash vaporizer (3), steam jet heat pump nozzle (4), low-pressure steam receiving chamber (5), mixing Room (6), diffusion room (7), heat exchanger i(8), heat exchanger ii(9), secondary network return pipe (10) and low-temperature return water delivery pipe (11), Described high-temperature tempering vacuum flash vaporizer (2) side connects once net and supplies return pipe (1), using low vacuum steam flash technology by portion High-temperature tempering is divided to become high steam, top connects to steam jet heat pump nozzle (4), so that the high steam of generation is transported to Steam jet heat pump, side connects to heat exchanger ii(9);Described low-temperature return water vacuum flash vaporizer (3) side connects low temperature and returns Water delivery pipe (11), part low-temperature return water is become low-pressure steam, and top connects to low-pressure steam receiving chamber (5), low temperature simultaneously The inner low-temperature return water temperature of backwater delivery pipe (11) reduces further;Described jet type heat pump nozzle (4) is tapered, and one end connects High-temperature tempering vacuum flash vaporizer (2), one end connection mixing chamber (6) and low-pressure steam receiving chamber (5), high steam passes through injecting type Produce high velocity air during heat pump nozzle (4), produce low-pressure area in nozzle exit, interior for low-pressure steam receiving chamber (5) low pressure is steamed Vapour sucks in mixing chamber (6), and high steam and low-pressure steam carry out good mixing;Described heat exchanger i(8) side connection mixing Steam diffusion room (7) end, side connecting secondary net return pipe (10), heating backwater flows through heat exchanger i(8 from the bottom up), mix Close steam heating backwater, heat exchanger i(8) under be connected to low-temperature return water delivery pipe (11), the hydrophobic conveying that mixed vapour is condensed To low-temperature return water delivery pipe (11);Described heat exchanger ii(9) once net supplies return pipe (1) for left upper end connection, and lower-left end connects low Warm backwater delivery pipe (11), bottom righthand side accesses secondary network return pipe (10), makes high-temperature tempering and secondary network backwater carry out heat exchange.
2. a kind of distributed great temperature difference heat supply system according to claim 1 it is characterised in that: described once net supplies backwater Pipe (1) is made up of exotic material, and once net supplies backwater to be 90 degrees Celsius.
3. a kind of distributed great temperature difference heat supply system according to claim 1 it is characterised in that: described secondary network return pipe (10) interior return water temperature is 40 degrees Celsius, and the interior return water temperature of low-temperature return water delivery pipe (11) is 50 degrees Celsius.
4. a kind of distributed great temperature difference heat supply system according to claim 1 it is characterised in that: described low-pressure steam accepts Low-pressure steam in room (5) is the flash steam that the exhaust steam diffusing and condensate produce.
CN201620637169.2U 2016-06-25 2016-06-25 Big difference in temperature heating system of distributing type Expired - Fee Related CN205897300U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105953285A (en) * 2016-06-25 2016-09-21 郝炜 Distributed large-temperature-difference heat supply system
CN107702182A (en) * 2017-09-01 2018-02-16 中清源环保节能有限公司 A kind of big temperature difference recovery exhaust steam residual heat system in coal-burning power plant's heat supply initial station

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105953285A (en) * 2016-06-25 2016-09-21 郝炜 Distributed large-temperature-difference heat supply system
CN107702182A (en) * 2017-09-01 2018-02-16 中清源环保节能有限公司 A kind of big temperature difference recovery exhaust steam residual heat system in coal-burning power plant's heat supply initial station

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C14 Grant of patent or utility model
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TR01 Transfer of patent right

Effective date of registration: 20191104

Address after: Room 2301, block C, Huayu Baihua Valley, No.132, Xuefu street, Xiaodian District, Taiyuan City, Shanxi Province

Patentee after: Chaoteng thermal Group Co., Ltd

Address before: 030006 Shanxi province Taiyuan City District Changzhi road A Ruijie Technology Center No. 251 block three layer

Patentee before: Hao Wei

TR01 Transfer of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170118

Termination date: 20210625

CF01 Termination of patent right due to non-payment of annual fee