CN205717160U - A kind of double extension shaft steam drive source pump and with its WHRS - Google Patents

Abstract

This utility model relates to a kind of double extension shaft steam drive source pump, including the first and second compressors being sequentially connected with and being formed closed cycle by pipeline, condenser, throttling arrangement and vaporizer, in the first and second compressors, the cold-producing medium after compression flows through condenser the most successively, return to after throttling arrangement and vaporizer in compressor, wherein source pump also includes double extension shaft steam turbine and arrangement of clutch, the shaft coupling end of double extension shaft steam turbine both sides is fixedly connected with arrangement of clutch respectively, first and second compressors realize being connected with the motion of double extension shaft steam turbine by arrangement of clutch respectively, separate or combination with described first and second compressors to control double extension shaft steam turbine by operating described arrangement of clutch.After this utility model uses steam-powered source pump, it is possible to use Waste Heat Recovery is got up by this source pump, decrease the heat of heat supply network heating, thus improve the heating efficiency of whole heating system.Further, this utility model further relates to the WHRS with above-mentioned source pump.

Description

A kind of double extension shaft steam drive source pump and with its WHRS

Technical field

This utility model relates to a kind of double extension shaft steam drive source pump and the WHRS with it, specifically Ground, relates to the Waste Heat Recovery technical field of cogeneration of heat and power.

Background technology

In the cycle of operation of existing cogeneration of heat and power, it will usually the Waste Heat Recovery in cogeneration of heat and power is carried out central heating with Improve heating efficiency.Seeing accompanying drawing 1, it is disclosed that the most conventional heat-supplying mode, co-generation unit therein includes pot Stove 1, electric turbine 2, electromotor 3, condenser 4, cooling tower 5, vapor heat exchanger 6 form.Wherein boiler 1, electric turbine 2, between condenser 4 by pipeline circulation connect formed the first loop, simultaneously boiler 1, electric turbine 2, vapor heat exchanger 6 it Between by pipeline circulation connect formed second servo loop.In the first loop, the high-temperature steam that boiler 1 generates enters electric turbine To drive electromotor 3 to generate electricity in 2, the exhaust steam after generating enters condensed solidifying water in condenser 4 and returns in boiler 1.Cooling It is connected by pipeline circulation between tower 5 with condenser 4, thus utilizes the cooling water in pipeline that exhaust steam is condensed.Second In loop, the intermediate extraction extracted out from electric turbine 2 enters in vapor heat exchanger 6 and carries out heat exchange with heat supply network water, Thus the water of heat supply network is heated to 125 degree from 50 degree and uses for external user, return through the condensed solidifying water of vapor heat exchanger 6 Return in boiler 1.During above-mentioned cogeneration of heat and power, owing to the partial heat absorbed after cooling water condensation exhaust steam can only be by cold But go during tower is discharged to air to waste, so under the operational mode of electricity determining by heat, Heating Period about 50% in the winter time Heat can be discharged in environment by cooling tower, cause the problem that the thermal efficiency is low.

Utility model content

This utility model is to solve the above-mentioned problems in the prior art at least in part, proposes a kind of double extension shaft Steam drive source pump and with its WHRS.

According to an aspect of the present utility model, disclose a kind of double extension shaft steam drive source pump, including by pipe Road is sequentially connected with and is formed the first and second compressors, condenser, throttling arrangement and the vaporizer of closed cycle, described first Described condenser, described throttling arrangement and described vaporizer is flowed through the most successively with the cold-producing medium after compression in the second compressor After return in described compressor, it is characterised in that described source pump also includes double extension shaft steam turbine and arrangement of clutch, described The shaft coupling end of double extension shaft steam turbine both sides is fixedly connected with described arrangement of clutch respectively, and described first and second compressors are divided equally Do not realize being connected with the motion of described double extension shaft steam turbine by described arrangement of clutch, by operating described arrangement of clutch to control Described double extension shaft steam turbine separates or combination with described first and second compressors.

Alternatively, described source pump also includes that supercooling apparatus, described supercooling apparatus can be arranged on described condenser Bottom outside the bottom of inner barrel or cylinder.

Alternatively, described condenser is additionally provided with leaving condenser water pipe and condenser water inlet pipe；Also set on described vaporizer It is equipped with vaporizer outlet pipe and vaporizer water inlet pipe.

Alternatively, described source pump also includes connecting described condenser overhead and the hot-gas bypass at described vaporizer top Pipeline, is provided with hot gas bypass valve on described hot gas bypass line.

According to another aspect that this is novel, disclose a kind of Waste Heat Recovery with double extension shaft steam drive source pump System, this recovery system includes boiler, electric turbine, electromotor, condenser, vapor heat exchanger and double extension shaft steam drive Source pump, the outlet of described Boiler Steam is connected with the steam inlet of described electric turbine, the output of described electric turbine Axle is connected to described electromotor, and described electric turbine exports with intermediate extraction outlet and exhaust steam, and described intermediate extraction exports It is connected to the steam inlet of described double extension shaft steam drive source pump to drive the work of described source pump, described source pump Have and be connected to described vapor heat exchanger and heat supply network and with condenser that the backwater in described heat supply network is heated and be connected to coagulate Vapour device is to cool down, to from described condenser, the vaporizer that water condenses, and described source pump has and is connected to described steam The steam (vapor) outlet of heat exchanger is to heat the backwater in described vapor heat exchanger further, and described vapor heat exchanger includes being connected to pot First outlet of stove to be transmitted back to boiler by condensed steam, and is connected to the second outlet of described heat supply network entering The backwater of one step heating is transmitted back to heat supply network, and described exhaust steam outlet is connected to described condenser, described condenser and described heat pump machine Group connected by circulating line so that through described source pump vaporizer cool down after cooling water return to described condenser after Condense described exhaust steam, described condenser is provided with the water supplement port returning to described boiler for the condensed solidifying water of exhaust steam.

According to the WHRS that this is novel, the intermediate extraction being currently used for directly heating heating network hot water is used for Drive the compressor in source pump, and the exhaust steam in steam turbine driving compressor is used further to heat the hot water of heating network.With Time, the vaporizer entered after the cooling water heat absorption of condensing turbine exhaust steam in the source pump of Steam Turbine Driven carries out heat friendship Change, to transfer heat to the cold-producing medium in vaporizer.Cold-producing medium after vaporizer side absorbs heat is discharged into condenser, with For heating the hot water entered in condenser, thus improve the inflow temperature entered in vapor heat exchanger.As can be seen here, this practicality Novel by source pump, Waste Heat Recovery is got up, decrease the heat of heat supply network heating, thus improve the confession of whole heating system The thermal efficiency.

Alternatively, described double extension shaft steam drive source pump also includes being arranged on described condensator outlet end and described steaming The throttling arrangement sent out between device arrival end on pipeline and by-pass collar.

Alternatively, described double extension shaft steam drive source pump also includes the cold charge excessively being arranged on bottom described condenser Put.

Alternatively, described double extension shaft steam drive source pump includes R134A cold-producing medium.

Accompanying drawing explanation

From description to this novel exemplary embodiment below in conjunction with the accompanying drawings, above and other side of the present utility model Face will become apparent from and is easier to understand, in the accompanying drawings:

Fig. 1 schematically shows co-generation unit in prior art.

Fig. 2 schematically shows an embodiment of the WHRS novel according to this.

Fig. 3 schematically shows the overall pattern of the source pump novel according to this.

Description of reference numerals:

1,11 boiler 2,12 electric turbine 3,13 electromotor

4,14 condenser 5,15 cooling tower 6,16 vapor heat exchanger

17 double extension shaft steam drive source pump 21 double extension shaft steam turbines

22 first compressors

23 second compressor 24 condenser 25 vaporizer 26 subcoolers

27 hot gas bypass valve 28 choke valves

Detailed description of the invention

Referring to the drawings the preferred implementation that this is novel is illustrated.It should be noted that it is used herein Term " on ", D score, "front", "rear", "left", "right" and similar statement for illustrative purposes only, and unrestricted.

A kind of Waste Heat Recovery with double extension shaft steam drive source pump in this utility model shown in Figure 2 System, this recovery system includes boiler 11, electric turbine 12, electromotor 13, condenser 14, vapor heat exchanger 16 and double stretches Axle steam drive source pump 17.This WHRS is as the system of a kind of cogeneration of heat and power, on the one hand by electromotor 13 To being externally supplied electric power, on the other hand the water supply of heat supply network is heated to relatively from relatively low temperature (such as but not limited to 55 degrees Celsius) High temperature (such as but not limited to 125 degrees Celsius), thus to the heat being externally supplied needed for heating.As it can be seen, boiler 11 Steam (vapor) outlet be connected to supply initial steam to electric turbine 12 with the steam inlet of electric turbine 12, initial steam generating Steam turbine 12 promotes the output shaft rotation of electric turbine.The output shaft of electric turbine 12 is connected to electromotor 13 to steam Under the effect that vapour promotes, drive electromotor 13 generates electricity.Electric turbine 12 exports with intermediate extraction outlet and exhaust steam, by Between outlet of drawing gas internal for electric turbine 12 steam with higher temperature and pressure can be drawn gas as heating and lead to double stretching In axle steam drive source pump 17.Complete exhaust steam of doing work in electric turbine 12 is then expelled to condensing by exhaust steam outlet In device 14, in condenser 14 via cooling water condensation after form solidifying water and return in boiler 11.

Double extension shaft steam drive source pump 17 in this utility model shown in Figure 3, wherein this unit includes Double extension shaft steam turbine 21, it is connected respectively to two the first compressor 22 and the second compressors stretching axle head of double extension shaft steam turbine 21 23, wherein it is compressed in, in the first and second compressors 22 and 23, the refrigerant worked in source pump and follows to realize heat pump Ring.Connect in the downstream of the first and second compressors 22,23 and have condenser 24, specifically, the first and second compressors 22,23 Outlet be connected to the working media import above condenser 24 by pipeline.Condenser 24 is also with the water supply entrance of heating network Condenser water inlet and for heating after heat supply network supply water flow out leaving condenser water mouth, be internally provided with at condenser 24 and change Thermal, this heat-exchanger rig is preferably but not limited to as shell and tube exchanger so that refrigerant condenses in condenser 24 and puts Heat to add the water supply in reheater condenser 24, such as, is preferably but not limited to be heated to 80 degrees Celsius.Wherein the heat supply network after this heating supplies Water is pipelined in vapor heat exchanger 16.Subcooler 26 and refrigerant outlet it is provided with in the lower section of condenser 24, In refrigerant exit through the pipeline communication with choke valve 28 to the import being positioned at bottom of vaporizer 25.On vaporizer 25 With the vaporizer water inlet for entering from the cooling water of condenser 14 and for the vaporizer that cooling water flow out of after cooling Outlet, is internally provided with heat-exchanger rig at vaporizer 25, and this heat-exchanger rig is preferably but not limited to into shell and tube exchanger, make Refrigerant in vaporizer 25 evaporation endothermic with the cooling water in cooling evaporator 25.Condenser 24 and vaporizer 25 it Between be additionally provided with the pipeline with hot gas bypass valve 27 that supplied gas connects between.The top of vaporizer 25 is provided with two The individual refrigerant outlet being connected to the first and second compressor inlet, thus achieves refrigerant in the first and second pressures Contracting machine 22,23, heat pump cycle between condenser 24 and vaporizer 25.Under the driving of double extension shaft steam turbine 21, refrigeration is situated between Matter circulation work is to extract heat by the cooling water in vaporizer 25 as low-temperature heat source, and passes to the heat supply network in condenser 24 In water supply.Thus, as shown in Figure 2, WHRS of the present utility model, than existing co-generation unit, utilizes double stretching Axle steam drive source pump 17 achieves the heat exchange that heat supply network supplies water and cools down water, the on the one hand cooling in condenser 14 Water is to be supplied water by heat supply network to cool down, it is to avoid arrange cooling tower 15 to utilize air to cool down, and then in vain will be in cooling water Temperature loss in air thus reduce this problem of the thermal efficiency.On the other hand cooling water is utilized to carry out pre-to heat supply network water supply Heat, thus decrease the heat that adds of heat supply network, thus improve the heating efficiency of whole heating system.

As in figure 2 it is shown, via the double extension shaft turbine discharge doing work complete in source pump 17, be transported to steam via pipeline In vapour heat exchanger 16, and the heat supply network after the condenser 24 of source pump 17 preheats supplies water and is also transported to steam heat-exchanging via pipeline In device 16.In vapor heat exchanger 16, double extension shaft turbine discharge supplies water with heat supply network and realizes heat exchange further, on the one hand by heat supply network Supply water further heating, such as but not limited to by 80 degrees Centigrade to 125 degree Celsius, on the other hand double extension shaft turbine discharge Temperature reduction is condensed into solidifying water, and via pipeline, solidifying water is transmitted back to boiler 11.Meanwhile, WHRS of the present utility model Eliminate cooling tower 15, but directly will be connected by pipeline between condenser 14 and the vaporizer 25 of source pump 17, condensing The cooling water (being for example and without limitation to 25 degrees Celsius) of the higher temperature in device 14 is connected to the water inlet of vaporizer 25 via pipeline Mouthful, in vaporizer 25, the cooling water (being cooled to be for example and without limitation to 15 degrees Celsius) after cooling is connected to condensing via pipeline In device 14, thus can realize cooling down the circulating cooling of water without cooling tower 15.

As can be seen here, according to the WHRS with double extension shaft steam drive source pump of the present utility model, After have employed double extension shaft steam drive source pump, the centre being originally intended to directly heat heating network hot water in prior art is taken out Vapour is for driving the steam turbine in source pump and then driving whole source pump to work.When source pump 17 works, at condensing The vaporizer 25 of the source pump entering Steam Turbine Driven after cooling down the cooling water heat absorption of exhaust steam in steam turbine in device 14 is carried out Cooling (hot water that i.e. temperature is higher enters vaporizer 25, after being absorbed heat, becomes the relatively low water of temperature and discharges in vaporizer 25, The relatively low water of temperature enters back into condenser 14 and cools down the exhaust steam of steam turbine), the heat absorbed from the cooling water of vaporizer 25 is arranged Enter in condenser 24 hot water entering condenser 24 for heating, make the hot water temperature of entrance condenser 24 take the photograph from such as 55 Family name's degree is increased to 80 degrees Celsius.Owing to the partial heat in cooling water is reclaimed, for heating network hot water by source pump Heating, heat supply network backwater is first preheating to 80 degrees Celsius from 55 degrees Celsius, then recycling source pump steam turbine steam discharge enter When one step heats the hot water in heating network, it is only necessary to from 80 degrees Centigrade to 125 degree Celsius.Obviously, there is source pump Waste Heat Recovery is got up, decreases the heat of heat supply network heating, thus improve the heating efficiency of whole heating system.

Further, the steam-powered compressor bank of double extension shaft of the present utility model shown in Figure 3, wherein this machine Group includes the steam turbine 21 that can carry out high speed rotating under steam drive around rotary shaft, is respectively provided with in the both sides of steam turbine 21 Have the first compressor 22 and the second compressor 23 being respectively fixedly connected with rotating shaft terminal, wherein said compressor be preferably from Core type compressor.As it is shown on figure 3, double extension shaft steam turbine 21 simultaneously drives the first and second compressor 22 Hes as driving equipment 23, between the projecting shaft of compressor and steam turbine 21, it is provided with shaft coupling, above-mentioned shaft coupling preferably can in axial direction move Dynamic movable shaft coupling, it is ensured that when steam turbine 21 is run, counteracting occurs under thermal expansion due to steam turbine 21 rotary shaft Elongation on Zhou Xiang, thus avoid active force big produced by the elongation of axle excessive when running to damage compressor and vapour The parts such as the bearing of turbine 21.

It is respectively arranged with high speed arrangement of clutch between steam turbine 21 and first, second compressor 22 and 23.When unit is transported During row, when in above-mentioned compressor or two key parameters are beyond permissible value, such as oil pressure, oil temperature, thrust etc., this Time need two or wherein a compressor shut down at once.Owing to the characteristic of steam turbine can not shut down rapidly, this is just Need promptly to be separated with steam turbine by compressor, thus ensure that compressor can shut down rapidly.It addition, when steam turbine is steamed When vapour throttle (steam) temperature is higher, requires during compressor emergency shutdown that steam turbine carries out low speed jiggering, but the design of compressor is not in low speed Lower rotation, this makes to need during compressor emergency shutdown to separate two compressors with steam turbine simultaneously.For these reasons, need Arranging clutch apparatus between Steam Turbine and compressor, this device is able to ensure that unit at a high speed or is realizing under low-speed conditions Compressor is rapidly separated with steam turbine, thus ensures the trouble free service of compressor.

Specifically, according to the high speed arrangement of clutch in this utility model, this high speed arrangement of clutch includes one by drive end Compressor shaft, a drive end turbine shaft, the first and second sleeves being connected with two axle head axial external surface, the first sleeve Being connected with by drive end compressor axle head outer surface, the second sleeve is connected with drive end steam turbine axle head outer surface, during installation, and quilt The compressor shaft of drive end utilizes hydraulic pressure to make the first sleeve hold tightly with axle head, by refueling cavity and piston space formation hydraulic pressure, Thus promote the second sleeve to hold tightly with drive end axle, it is ensured that drive device drives driven equipment one to act as high-speed rotation.When needing When steam turbine to be disengaged and compressor, make cylinder tie rod move to opposite side, thus the second sleeve cannot be made to continue to hold driving tightly Axle head axle, drive end realizes separating with by drive end.

When Steam Turbine normally works, need to make steam turbine drive compressor to operate together, now require at clutch In the state closed, now gas direction is that just piston moves to the right to the second opening from cylinder the first opening, promotes Connecting rod is to the right, it is ensured that connecting rod is in prolongation state, if need throw-out-of clutch, gas direction change into from the second opening to First outlet, gas push piston moves to the left, and connecting rod moves to the left, and connecting rod is in shortening state, with connecting rod The cursor connected can start to rotate with bolt, promotes clutch to move so that clutch is in disengaged condition, it is achieved drive end vapour Turbine separates with by drive end compressor.

From the foregoing, it will be observed that the high speed arrangement of clutch during this is novel exists such as but not limited to oil pressure, oil temperature, thrust etc. at unit Unusual condition time, it is possible to compressor is departed from rapidly with steam turbine, enables compressor quickly to shut down, it is ensured that compressor Safety.It addition, when turbine-inlet temperature is higher, it is desirable to carry out low speed jiggering when orderly closedown, this arrangement of clutch is also Two compressors can be made the most rapidly to separate with steam turbine, thus ensure that the normal jiggering of steam turbine, without Damage compressor.

This utility model is illustrated by above-mentioned embodiment, but it is to be understood that, above-mentioned embodiment It is only intended to citing and descriptive purpose, and in the range of being not intended to this utility model is limited to described embodiment.This It will be appreciated by persons skilled in the art that outward this utility model is not limited to above-mentioned embodiment, according to this utility model Teaching can also make more kinds of variants and modifications, it is required for protection that these variants and modifications all fall within this utility model Within scope.

Claims (7)

1. a double extension shaft steam drive source pump, including being sequentially connected with and formed the first and of closed cycle by pipeline Two compressors, condenser, throttling arrangement and vaporizer, in described first and second compressors, the cold-producing medium after compression is by the road Return to after flowing through described condenser, described throttling arrangement and described vaporizer successively in described compressor, it is characterised in that institute State source pump and also include that double extension shaft steam turbine and arrangement of clutch, the shaft coupling end of described double extension shaft steam turbine both sides are fixed respectively Connecting and have described arrangement of clutch, described first and second compressors are realized and described double extension shaft by described arrangement of clutch respectively The motion of steam turbine connects, by operating described arrangement of clutch to control described double extension shaft steam turbine and described first and second pressures The separation of contracting machine or combination.

2. source pump as claimed in claim 1, it is characterised in that described source pump also includes supercooling apparatus, described mistake Device for cooling can be arranged on the bottom outside the bottom of the inner barrel of described condenser or cylinder.

3. source pump as claimed in claim 1, it is characterised in that described condenser is additionally provided with leaving condenser water pipe and cold Condenser water inlet pipe；Vaporizer outlet pipe and vaporizer water inlet pipe it is additionally provided with on described vaporizer.

4. source pump as claimed in claim 1, it is characterised in that described source pump also includes connecting described condenser top Portion and the hot gas bypass line at described vaporizer top, be provided with hot gas bypass valve on described hot gas bypass line.

5., with a WHRS for double extension shaft steam drive source pump, this recovery system includes boiler, generating vapour Turbine, electromotor, condenser, vapor heat exchanger and the heat of the double extension shaft steam drive described in right 1-4 any one claim Pump assembly, the outlet of described Boiler Steam is connected with the steam inlet of described electric turbine, the output shaft of described electric turbine Being connected to described electromotor, described electric turbine exports with intermediate extraction outlet and exhaust steam, and described intermediate extraction outlet is even Receive the steam inlet of described double extension shaft steam drive source pump with driving described source pump work, described source pump tool Have and be connected to described vapor heat exchanger and heat supply network and with condenser that the backwater in described heat supply network is heated and be connected to condensing Device is to cool down, to from described condenser, the vaporizer that water condenses, and described source pump has and is connected to described steam and changes The steam (vapor) outlet of hot device is to heat the backwater in described vapor heat exchanger further, and described vapor heat exchanger includes being connected to boiler The first outlet condensed steam to be transmitted back to boiler, and be connected to the second outlet of described heat supply network so that one will be entered The backwater of step heating is transmitted back to heat supply network, and described exhaust steam outlet is connected to described condenser, described condenser and described source pump Connected by circulating line so that through described source pump vaporizer cool down after cooling water return to described condenser after cold Solidifying described exhaust steam, described condenser is provided with the water supplement port returning to described boiler for the condensed solidifying water of exhaust steam.

6. WHRS as claimed in claim 5, it is characterised in that described double extension shaft steam drive source pump is also wrapped Include the throttling arrangement and by-pass collar being arranged between described condensator outlet end and described evaporator inlet end on pipeline.

7. the WHRS as described in claim 5 or 6, it is characterised in that described double extension shaft steam drive source pump bag Include R134A cold-producing medium.