CN207526535U - A kind of steam turbine axial exhaust cylinder - Google Patents

Abstract

The utility model is related to discharge cylinder of steam turbine technical fields, a kind of steam turbine axial exhaust cylinder is disclosed, including cylinder casing mechanism, bearing draw box mechanism, packing mechanism and water spraying mechanism, cylinder casing mechanism includes cone barrel outer housing, is installed with cone barrel inner housing by supporting mechanism inside cone barrel outer housing；Supporting mechanism includes wing annular solid and top ring body, wing annular solid and top ring body are front end orthodrome, the airfoil of rear end small arc-shaped, inner hollow shape, cone barrel inner housing top is connected by top ring body at the top of cone barrel outer housing, inside is communicated with the external world, and the lower part of cone barrel inner housing is connected by wing annular solid with cone barrel outer housing lower part, inside is communicated with the external world；Fixed inspection platform in cone barrel inner housing, worker can enter inspection platform from top ring body hollow area, and inspection operation is carried out to bearing draw box mechanism.Ensure that steam steam discharge is smooth, staff can overhaul or replace to bearing housing inner part on inspection platform.

Description

A kind of steam turbine axial exhaust cylinder

Technical field

The utility model is related to discharge cylinder of steam turbine technical field, more particularly to a kind of steam turbine axial exhaust cylinder.

Background technology

Steam turbine is to realize the equipment that internal steam work is converted to mechanical energy, and the steam of high-quality is entered by steam turbine air intake Steam turbine does work step by step, and final steam exhaust is arranged by turbine discharge mouth to condenser or steam exhaust device；In traditional sense, steamer Machine steam drain is located at below exhaust casing, and the downward steam discharge of steam turbine enters condenser；Also there is the upward steam discharge of Steam Turbine, steam exhaust is arranged Enter the condenser or steam exhaust device of top；It is very special, there is Steam Turbine that can realize side exhaust, by steam by a unit left side Side or right side discharge；Downwards, upwards, to side steam discharge steam flow in exhaust casing internal turn, steering can bring steam discharge to lose, There is passive contribution to the economy of steam turbine；The downward exhaust mode largely used, condenser and unit layered arrangement, unit It is usually located on the operation platform of 8 meters or higher absolute altitude, operation platform construction needs to spend a large amount of financial resources；In view of above-mentioned ask Topic has gradually appeared axial exhaust casing structure type, that is, realizes Steam Turbine axial exhaust, ensures that steam steam flow is not diverted It being expelled directly out, it is clear that steam discharge loss will be less than downward, upward, lateral exhaust mode, meanwhile, the unit of axial exhaust can be real Existing zero meter of layer arrangement, it is no longer necessary to which raised operation platform greatly saves the capital cost of power plant.

It needs to be supported fixation to bearing housing in existing axial exhaust cylinder, relates to be arranged on steam discharge to support member Cylinder interior often adversely affects steam steam discharge while support, increases the steam discharge resistance of steam, and then influence vapour The working efficiency of turbine, meanwhile, existing axial exhaust cylinder is also inconvenient to be overhauled or is replaced behaviour to the component in bearing housing Make.

Utility model content

The goal of the invention of the utility model is：In view of the above problems, a kind of steam turbine axial exhaust is provided Cylinder reduces steam steam discharge resistance, ensures that steam steam discharge is smooth, meanwhile, staff can be in exhaust casing easily to bearing Case inner part is overhauled or is replaced, and can also be hung out the component of bearing housing and is repaired or replaced.

The technical solution adopted in the utility model is such：A kind of steam turbine axial exhaust cylinder, including cylinder casing Mechanism, bearing draw box mechanism, packing mechanism and water spraying mechanism, the cylinder casing mechanism include cone barrel outer housing, the cone cylinder The inside of shape outer housing is fixedly installed cone barrel inner housing by supporting mechanism, and the bearing draw box mechanism and packing mechanism are solid Surely it is set in the cone barrel inner housing, the miner diameter end of cone barrel outer housing and cone barrel inner housing is first contacted with steam；

The supporting mechanism includes wing annular solid and top ring body, and the wing annular solid and top ring body are The aircraft wing shape of front end orthodrome, rear end small arc-shaped, and internal is hollow form, passes through top at the top of the cone barrel inner housing It is fixedly connected at the top of portion's annular solid and cone barrel outer housing and its inside is communicated with the external world, under the cone barrel inner housing Half portion is fixedly connected by wing annular solid with the lower half of cone barrel outer housing and its inside is communicated with the external world；

Back-end location in the cone barrel inner housing positioned at bearing draw box mechanism is fixedly installed inspection platform, service personnel The inspection platform can be entered by the hollow region of top ring body at the top of cone barrel outer housing, so as to bearing draw box mechanism Inspection operation is carried out, the hollow region of the top ring body hangs out for each component of bearing draw box mechanism, the inspection platform Available for placing each component of bearing draw box mechanism.

A kind of steam turbine axial exhaust cylinder described in the utility model, the cone barrel outer housing include upper half outer housing With lower housing body, the front-end and back-end of the upper half outer housing are respectively provided with end flanges after upper half front end flange and upper half, institute The front-end and back-end for stating lower housing body are respectively provided with end flanges after lower half front end flange and lower half, upper half front end flange and lower half Front end flange forms a path full circle flange, for being fixedly connected with Steam Turbine, hold-carrying after end flanges and lower half after upper half Orchid forms a major diameter full circle flange, for being fixedly connected with Condensing steam turine, and the cone barrel inner housing includes upper half inner housing With lower half inner housing, pass through upper half outer housing split flange and lower housing between the upper half outer housing and lower housing body Body split flange is fixedly connected, between the upper half inner housing and lower half inner housing by upper half inner housing split flange and Lower half inner housing split flange is fixedly connected, and the rear end of upper half inner housing and lower half inner housing is by connecting an inner housing rear end Sealing plate is sealed.

A kind of steam turbine axial exhaust cylinder described in the utility model, it is symmetrical on the both sides outer wall of the lower housing body Two pieces of supporting platens are fixedly installed in ground, and the supporting platen is fixedly connected by bolt with pedestal supporting surface, the supporting platen Front end be fixedly connected with lower half front end flange, rear end is fixedly connected with end flanges after lower half, the upper surface of the supporting platen Several reinforcing plates are fixedly installed between the outer wall of lower housing body, the reinforcing plate is set along supporting platen length direction interval It puts, radial direction keyway is offered on the bottom surface of the supporting platen, exhaust casing is positioned, the bottom of the lower housing body rear end Portion offers axial keyway, and centering is carried out to exhaust casing.

A kind of steam turbine axial exhaust cylinder described in the utility model, the lower half inner housing pass through three wing annulars Body is fixedly connected with lower housing body, wherein, underface one, each one of both sides 45° angle；The bearing draw box mechanism includes bearing Case lid and bearing block, the bearing block are fixedly installed on lower half inner housing, and the bearing cap is fastened on the bearing housing On seat, and the bolt for passing through both sides achieves a fixed connection, and the leading inside of the bearing box cover and bearing block is pacified with oil catch Fill ring, inside middle portion has bearing block；Oil inlet pipe and oil return pipe are further included, the oil inlet pipe passes through the wing annular solid of 45° angle And be arranged on the side of bearing block, the oil return pipe pass through 45° angle wing annular solid and be set to bearing block bottom and with The inside connection of bearing draw box mechanism.

A kind of steam turbine axial exhaust cylinder described in the utility model, the packing mechanism include being opened in cone barrel Several annular mounting grooves on the inside of housing forward end, the bottom of one of annular mounting groove send steam chest to connect with a packing, packing Steam chest is sent to be connected with a packing steam delivery tube, the bottom of another annular mounting groove is connected with a gland leak-off room, gland leak-off room It is connected with a gland leak-off pipe, the wing annular immediately below the packing steam delivery tube and gland leak-off Guan Juncong cone barrel inner housings Internal hollow region is pierced by.

A kind of steam turbine axial exhaust cylinder described in the utility model, the water spraying structure include sparge pipe, the spray Water pipe sets several evenly and at intervals on one circle of the front end of cone barrel outer housing fixed setting, the circle sparge pipe Branch pipe, the branch pipe both pass through the cone barrel outer housing and extend into chamber, and the end of the branch pipe is fixedly installed Atomizer, the atomizer is towards steam direction of advance；Be provided with control valve on the sparge pipe, the control valve with DCS system is electrically connected, and the DCS can control being turned on and off for the control valve.

A kind of steam turbine axial exhaust cylinder described in the utility model is provided with thermometric member on the cone barrel outer housing Part boss, the temperature element boss is for disposing thermocouple, and the thermocouple is electrically connected with DCS system, and the thermocouple can Temperature signal is simultaneously sent to DCS system by the indoor temperature of detection steam discharge chamber.

A kind of steam turbine axial exhaust cylinder described in the utility model, the outer surface of the cone barrel outer housing, which is fixed, to be set Several circumferential stiffener plates of circle and several blocks of shaft orientation reinforcing rib plates are equipped with, respectively enclose the circumferential stiffener plate along cone barrel shell Body length direction is arranged at intervals, and each block of shaft orientation reinforcing rib plate is provided at circumferentially spaced along cone barrel outer housing, and the circumferential direction adds Strengthening tendons plate intersects and vertical with shaft orientation reinforcing rib plate.

A kind of steam turbine axial exhaust cylinder described in the utility model, on the outer wall of the cone barrel outer housing and in Cat ladder is fixedly installed on wall in empty top annular body, so that staff smoothly enters cylinder internal outside cylinder Inspection platform on.

In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are：The utility model reduces Steam steam discharge resistance ensures that steam steam discharge is smooth, meanwhile, staff can be in exhaust casing easily to bearing housing inner part It is overhauled or is replaced, the component of bearing housing can also hung out and be repaired or replaced, the setting of inspection platform provides work Make the operating platform of personnel, the component of bearing housing structure can also be dismantled and be positioned on inspection platform, so as in exhaust casing The component of bearing draw box mechanism is overhauled or replaced, without dismantling entire exhaust casing；Cone barrel outer housing point diameter is small, Rear end diameter is big, forms a diffusion water conservancy diversion barrel structure, and diffusion is carried out to steam, to carry out static pressure recycling to steam discharge, reduces Velocity of exhaust ensures that steam enters condenser with relatively low speed and higher pressure, reduces steam discharge energy loss, cone barrel Inner housing specifically includes the cone cylinder portion of front end and the cylindrical portion of rear end, ensure that and steam stream is effectively directed at, and have Good aeroperformance；Wing annular solid and top ring body are both designed as the aircraft wing of front end orthodrome, rear end small arc-shaped Shape ensure that it, with good aeroperformance, reduces the resistance to steam steam discharge, reduce the negative shadow to exhaust passage It rings, while effective support also has been carried out to bearing draw box mechanism；The packing steam delivery tube and gland leak-off pipe of packing mechanism pass through 45° angle Wing annular solid be pierced by, oil inlet pipe and oil return pipe are pierced by by the wing annular solid of underface, ensure that above-mentioned pipeline is not straight The steam passage across exhaust casing is connect, is not contacted with steam, avoids the adverse effect to steam discharge, while avoids oil circuit accidental release And enter in steam.

Description of the drawings

Fig. 1 is the structure diagram of the utility model angle one；

Fig. 2 is the structure diagram of the utility model angle two；

Fig. 3 is that end-plate after upper half outer housing, top ring body, upper half inner housing and inner housing is removed in the utility model Structure diagram afterwards；

Fig. 4 is that end-plate after upper half outer housing, top ring body, upper half inner housing, inner housing is removed in the utility model With the structure diagram after bearing box cover；

Fig. 5 is the structure diagram after removal inner housing after end-plate in the utility model；

Fig. 6 is the longitudinal sectional view of the utility model.

It is marked in figure：1 is wing annular solid, and 2 be top ring body, and 3 be inspection platform, and 4 be upper half outer housing, under 5 are Half-shells body, 6 be upper half front end flange, and 7 be end flanges after upper half, and 8 be lower half front end flange, and 9 be end flanges after lower half, and 10 are Upper half inner housing, 11 be lower half inner housing, and 12 be upper half outer housing split flange, and 13 be lower housing body split flange, 14 be upper half inner housing split flange, and 15 be lower half inner housing split flange, and 16 be the horizontal wing plate of upper half, and 17 be lower half water Flat wing plate, 18 be supporting platen, and 19 be reinforcing plate, and 20 be radial direction keyway, and 21 be axial keyway, and 22 be bearing box cover, and 23 be axis Block is held, 24 be oil catch mounting ring, and 25 be bearing block, and 26 be oil inlet pipe, and 27 be oil return pipe, and 28 be annular mounting groove, and 29 be vapour Envelope send steam chest, and 30 be packing steam delivery tube, and 31 be gland leak-off room, and 32 be gland leak-off pipe, and 33 be sparge pipe, and 34 be branch pipe, and 35 It is circumferential stiffener plate for temperature element boss, 36,37 be shaft orientation reinforcing rib plate, and 38 be cat ladder, and 39 be end-plate after inner housing.

Specific embodiment

Below in conjunction with the accompanying drawings, the utility model is described in detail.

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention is further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

As shown in Figures 1 to 6, a kind of steam turbine axial exhaust cylinder, including cylinder casing mechanism, bearing draw box mechanism, packing Mechanism and water spraying mechanism, cylinder casing mechanism include cone barrel outer housing, and the small one end of diameter is front end, and the big one end of diameter is Rear end, the outer surface of cone barrel outer housing are fixedly installed several circumferential stiffener plates 36 of circle and several blocks of shaft orientation reinforcing rib plates 37, each circumferential stiffener plate 36 of circle is arranged at intervals along cone barrel outer housing length direction, and each block of shaft orientation reinforcing rib plate 37 is along cone cylinder Shape outer housing is provided at circumferentially spaced, and circumferential stiffener plate 36 intersects and vertical with shaft orientation reinforcing rib plate 37, cone barrel outer housing Inside is fixedly installed cone barrel inner housing by supporting mechanism, and the small one end of diameter is front end, and the big one end of diameter is rear end, Specifically, cone barrel outer housing point diameter is small, and rear end diameter is big, forms a diffusion water conservancy diversion barrel structure, cone barrel inner housing The cylindrical portion in cone cylinder portion and rear end including front end, bearing draw box mechanism and packing mechanism are fixedly installed on cone barrel inner housing Interior and packing mechanism is located at the front end of bearing draw box mechanism, and packing mechanism can prevent steam from entering cone barrel inner housing from front end Inner space, the rear end of cone barrel inner housing are sealed by end-plate 39 after connecting an inner housing, prevent steam from rear end Into in cone barrel inner housing, the miner diameter end of cone barrel outer housing and cone barrel inner housing is first contacted with steam；Supporting mechanism Including wing annular solid 1, top ring body 2 and horizontal wing plate, wing annular solid 1 and top ring body 2 be front end orthodrome, The aircraft wing shape of rear end small arc-shaped, and internal is hollow form, the top of cone barrel inner housing passes through top ring body 2 and cone cylinder It is fixedly connected at the top of shape outer housing and its inside is communicated with the external world, the lower half of cone barrel inner housing passes through wing annular solid 1 It is fixedly connected with the lower half of cone barrel outer housing and its inside is communicated with the external world, both ensure that the support to bearing draw box mechanism, Save material utilization amount again, while be also equipped with good aeroperformance, the both sides of cone barrel inner housing by horizontal wing plate with The inner wall of cone barrel outer housing is fixedly connected, and it is strong to further ensure installation of the cone barrel inner housing inside cone barrel outer housing Degree；Back-end location in cone barrel inner housing positioned at bearing draw box mechanism is fixedly installed inspection platform 3, the front end of inspection platform 3 Be fixedly connected with bearing draw box mechanism, its lower end is fixedly connected by support plate with the inner wall of cone barrel inner housing, so as to flat to overhauling Platform 3 is effectively supported, and service personnel can enter maintenance at the top of cone barrel outer housing by the hollow region of top ring body 2 Platform 3, to carry out inspection operation to bearing draw box mechanism, the hollow region of top ring body 2 for bearing draw box mechanism each portion Part is hung out, and inspection platform 3 can be used for staff to stand and place each component of bearing draw box mechanism, further, cone barrel Cat ladder 38 is fixedly installed on the outer wall of outer housing and on hollow 2 inner wall of top ring body, so that staff is smooth It is entered outside cylinder on the inspection platform 3 of cylinder internal.

Further, cone barrel outer housing include upper half outer housing 4 and lower housing body 5, the front end of upper half outer housing 4 and Rear end is respectively provided with end flanges 7 after upper half front end flange 6 and upper half, and the front-end and back-end of lower housing body 5 are respectively provided with lower half End flanges 9 after front end flange 8 and lower half, upper half front end flange 6 and lower half front end flange 8 form a path full circle flange, use Be fixedly connected in Steam Turbine, after upper half after end flanges 7 and lower half end flanges 9 form a major diameter full circle flange, for Condensing steam turine is fixedly connected, and cone barrel inner housing includes upper half inner housing 10 and lower half inner housing 11, upper half outer housing 4 and lower half It is fixedly connected between outer housing 5 by upper half outer housing split flange 12 with lower housing body split flange 13, two flanges Several bolts hole are offered on face along its length, realize that two flange faces are bolted to connection together, upper half inner housing It is fixed and connected by upper half inner housing split flange 14 and lower half inner housing split flange 15 between 10 and lower half inner housing 11 It connects, offers several bolts hole on two flange faces along its length, realize that two flange faces are bolted to connection together, lead to Above-mentioned concrete structure setting is crossed, reduces the whole manufacture difficulty of cone barrel outer housing and cone barrel inner housing, meanwhile, up and down Partial abutting joint is also more convenient；Horizontal wing plate includes the horizontal wing plate 16 of upper half and the horizontal wing plate 17 of lower half, upper half inner casing The both sides of body 10 are fixedly connected by the horizontal wing plate 16 of upper half with the inner wall of upper half outer housing 4, the both sides of lower half inner housing 11 It is fixedly connected by the horizontal wing plate 17 of lower half with the inner wall of lower housing body 5, further enhances upper half inner housing 10 respectively The installation strength of installation strength and lower half inner housing 11 in lower housing body 5 in upper half outer housing 4.Specifically, under Half inner housing 11 is fixedly connected by three wing annular solids 1 with lower housing body 5, wherein, underface one, both sides 45° angle Each one, further ensure support strength and stability to cone barrel inner housing；Bearing draw box mechanism includes bearing box cover 22 With bearing block 23, bearing block 23 is fixedly installed on lower half inner housing 11, and bearing cap is fastened on bearing block 23, and is led to The bolt for crossing both sides achieves a fixed connection, the leading inside of bearing box cover 22 and bearing block 23 have oil catch mounting ring 24, in There is bearing block 25, bearing block 25 is used to install bearing on the inside of portion（It is not shown in figure）；Oil inlet pipe 26 and oil return pipe 27 are further included, Oil inlet pipe 26 passes through the hollow region of the wing annular solid 1 of 45° angle and is arranged on the side of bearing block 25, and oil return pipe 27 passes through 45 ° The hollow region of angle blade shape annular solid 1 is simultaneously set to 23 bottom of bearing block and is connected with the inside of bearing draw box mechanism, oil inlet pipe 26 and oil return pipe 27 can be passed through from wing 1 hollow region of annular solid of 45° angle of homonymy, also be each passed through the 45° angle wings of both sides 1 hollow region of shape annular solid passes through；Packing mechanism is located at the front end of bearing draw box mechanism, and packing mechanism includes being opened in cone barrel Several annular mounting grooves 28 on the inside of housing forward end, annular mounting groove 28 are used to install labyrinth casing（It is not shown in figure）, wherein one The bottom of a annular mounting groove 28 send steam chest 29 to connect with a packing, packing send steam chest 29 to be connected with a packing steam delivery tube 30, separately The bottom of one annular mounting groove 28 is connected with a gland leak-off room 31, gland leak-off room 31 is connected with a gland leak-off pipe 32, Packing send steam chest 29 and gland leak-off room 31 to be formed by steel plate butt welding, and packing steam delivery tube 30 and gland leak-off pipe 32 are from cone cylinder Hollow region is pierced by wing annular solid 1 immediately below shape inner housing, and send the annular mounting groove 28 that steam chest 29 connects with packing Positioned at the front end of annular mounting groove 28 connected with gland leak-off room 31.

Further, two pieces of supporting platens 18, supporting platen is symmetrically fixedly installed on the both sides outer wall of lower housing body 5 18 are fixedly connected by bolt with pedestal supporting surface, the installation of exhaust casing are facilitated to fix, before the front end of supporting platen 18 and lower half End flanges 8 are fixedly connected, rear end is fixedly connected with end flanges after lower half 9, upper surface and the lower housing body 5 of supporting platen 18 Several reinforcing plates 19 are fixedly installed between outer wall, reinforcing plate 19 is arranged at intervals along 18 length direction of supporting platen, ensures support Platen 18 has exhaust casing enough support strengths, radial direction keyway 20 is offered on the bottom surface of supporting platen 18, to exhaust casing It is positioned, the bottom of 5 rear end of lower housing body offers axial keyway 21, and centering is carried out to exhaust casing；Supporting platen 18 The distance between lower surface and the split of upper half outer housing 4 and lower housing body 5 are as small as possible, cone barrel during ensureing hot 25 amount of raising of bearing block in inner housing is in receivable range.

Water spraying structure includes sparge pipe 33, and sparge pipe 33 is connected with water supply installation（It is not shown in figure）, sparge pipe 33 surrounds The front end fixed setting one of cone barrel outer housing is enclosed, and sets several branch pipes 34 evenly and at intervals on a circle sparge pipe 33, specially 12 branch pipes 34, branch pipe 34 both pass through cone barrel outer housing and extend into chamber, and the end of branch pipe 34 is fixedly installed mist Change nozzle, atomizer forms water mist curtain and steam discharge is cooled down to control exhaust temperature towards steam direction of advance；Sparge pipe Control valve is provided on 33（It is not shown in figure）, control valve and DCS system（It is not shown in figure）Electrical connection, DCS can control control Valve is turned on and off；Temperature element boss 35 is provided on cone barrel outer housing, specifically, in the middle part of 4 outer wall of upper half outer housing Temperature element boss 35 is provided at left and right sides of split, temperature element boss 35 is used to install thermocouple（In figure It is not shown）, thermocouple is electrically connected with DCS system, and thermocouple can detect the indoor exhaust temperature of steam discharge chamber and pass temperature signal It send to DCS system, and the start-stop of control valve is automatically controlled after being judged by DCS system, to control the spray in exhaust passage Regimen condition, realizes and exhaust temperature is automatically controlled.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model Protection domain within.

Claims (9)

1. a kind of steam turbine axial exhaust cylinder, including cylinder casing mechanism, bearing draw box mechanism, packing mechanism and water spraying mechanism, It is characterized in that：The cylinder casing mechanism includes cone barrel outer housing, and the inside of the cone barrel outer housing is by supporting machine Structure is fixedly installed cone barrel inner housing, and the bearing draw box mechanism and packing mechanism are fixedly installed on the cone barrel inner housing It is interior；

The supporting mechanism includes wing annular solid（1）With top ring body（2）, the wing annular solid（1）And top annular Body（2）It is the aircraft wing shape of front end orthodrome, rear end small arc-shaped, and internal is hollow form, the cone barrel inner housing Top passes through top ring body（2）It is fixedly connected at the top of cone barrel outer housing and its inside is communicated with the external world, the cone cylinder The lower half of shape inner housing passes through wing annular solid（1）It is fixedly connected with the lower half of cone barrel outer housing and it is internal with outside Boundary communicates；

Back-end location in the cone barrel inner housing positioned at bearing draw box mechanism is fixedly installed inspection platform（3）, service personnel Top ring body can be passed through at the top of cone barrel outer housing（2）Hollow region enter the inspection platform（3）, so as to bearing Draw box mechanism carries out inspection operation, the top ring body（2）Hollow region hung out for each component of bearing draw box mechanism, it is described Inspection platform（3）Available for placing each component of bearing draw box mechanism.

2. a kind of steam turbine axial exhaust cylinder according to claim 1, it is characterised in that：The cone barrel outer housing packet Include upper half outer housing（4）With lower housing body（5）, the upper half outer housing（4）Front-end and back-end be respectively provided with upper half front end Flange（6）With end flanges after upper half（7）, the lower housing body（5）Front-end and back-end be respectively provided with lower half front end flange（8） With end flanges after lower half（9）, upper half front end flange（6）With lower half front end flange（8）Form a path full circle flange, for Steam Turbine is fixedly connected, end flanges after upper half（7）With end flanges after lower half（9）Form a major diameter full circle flange, for Condensing steam turine is fixedly connected, and the cone barrel inner housing includes upper half inner housing（10）With lower half inner housing（11）, the upper half Outer housing（4）With lower housing body（5）Between pass through upper half outer housing split flange（12）With lower housing body split method It is blue（13）It is fixedly connected, the upper half inner housing（10）With lower half inner housing（11）Between pass through upper half inner housing split flange （14）With lower half inner housing split flange（15）It is fixedly connected, upper half inner housing（10）With lower half inner housing（11）Rear end lead to Cross connection one inner housing after end-plate（39）It is sealed.

3. a kind of steam turbine axial exhaust cylinder according to claim 2, it is characterised in that：The lower housing body（5） Both sides outer wall on two pieces of supporting platens are symmetrically fixedly installed（18）, the supporting platen（18）It is supported by bolt and pedestal Face is fixedly connected, the supporting platen（18）Front end and lower half front end flange（8）It is fixedly connected, end flanges after rear end and lower half （9）It is fixedly connected, the supporting platen（18）Upper surface and lower housing body（5）Outer wall between be fixedly installed it is several plus Strong plate（19）, the reinforcing plate（19）Along supporting platen（18）Length direction is arranged at intervals, the supporting platen（18）Bottom surface On offer radial direction keyway（20）, exhaust casing is positioned, the lower housing body（5）The bottom of rear end offers axial bond Slot（21）, centering is carried out to exhaust casing.

4. a kind of steam turbine axial exhaust cylinder according to claim 2, it is characterised in that：The lower half inner housing（11） Pass through three wing annular solids（1）With lower housing body（5）It is fixedly connected, wherein, underface one, each one of both sides 45° angle； The bearing draw box mechanism includes bearing box cover（22）With bearing block（23）, the bearing block（23）It is fixedly installed in lower half Housing（11）On, the bearing cap is fastened on the bearing block（23）On, and the bolt for passing through both sides achieves a fixed connection, institute State bearing box cover（22）With bearing block（23）Leading inside have oil catch mounting ring（24）, inside middle portion have bearing block （25）；Further include oil inlet pipe（26）And oil return pipe（27）, the oil inlet pipe（26）Across the wing annular solid of 45° angle（1）And it sets It puts in bearing block（25）Side, the oil return pipe（27）Across the wing annular solid of 45° angle（1）And it is set to bearing block （23）Bottom is simultaneously connected with the inside of bearing draw box mechanism.

5. a kind of steam turbine axial exhaust cylinder according to claim 4, it is characterised in that：The packing mechanism includes opening Set on several annular mounting grooves of cone barrel inner housing leading inside（28）, annular mounting groove（28）For installing labyrinth casing, In an annular mounting groove（28）Bottom and a packing send steam chest（29）Connection, packing send steam chest（29）With a packing steam delivery tube （30）Connection, another annular mounting groove（28）Bottom and a gland leak-off room（31）Connection, gland leak-off room（31）With one Gland leak-off pipe（32）Connection, the packing steam delivery tube（30）With gland leak-off pipe（32）Immediately below cone barrel inner housing Wing annular solid（1）Interior hollow region is pierced by.

6. a kind of steam turbine axial exhaust cylinder according to any one of claims 1 to 5, it is characterised in that：The water spray Structure includes sparge pipe（33）, the sparge pipe（33）It is described around one circle of the front end of cone barrel outer housing fixed setting One circle sparge pipe（33）On several branch pipes are set evenly and at intervals（34）, the branch pipe（34）Both pass through the cone barrel outer housing And it extends into chamber, the branch pipe（34）End be fixedly installed atomizer, the atomizer is towards before steam Into direction；The sparge pipe（33）On be provided with control valve, the control valve is electrically connected with DCS system, and the DCS can control institute State being turned on and off for control valve.

7. a kind of steam turbine axial exhaust cylinder according to claim 6, it is characterised in that：On the cone barrel outer housing It is provided with temperature element boss（35）, the temperature element boss（35）For disposing thermocouple, the thermocouple and DCS system Electrical connection, the thermocouple can detect the indoor temperature of steam discharge chamber and temperature signal are sent to DCS system.

8. a kind of steam turbine axial exhaust cylinder according to any one of claims 1 to 5, it is characterised in that：The cone cylinder The outer surface of shape outer housing is fixedly installed the circumferential stiffener plate of several circles（36）And several blocks of shaft orientation reinforcing rib plates（37）, respectively Enclose the circumferential stiffener plate（36）It is arranged at intervals along cone barrel outer housing length direction, each block of shaft orientation reinforcing rib plate（37） It is provided at circumferentially spaced along cone barrel outer housing, the circumferential direction stiffener plate（36）With shaft orientation reinforcing rib plate（37）It is intersecting and vertical.

9. a kind of steam turbine axial exhaust cylinder according to any one of claims 1 to 5, it is characterised in that：The cone cylinder On the outer wall of shape outer housing and hollow top ring body（2）Cat ladder is fixedly installed on inner wall（38）, so as to the people that works Member smoothly enters the inspection platform of cylinder internal outside cylinder（3）On.