CN207728403U - Turbine Steam cylinder structure - Google Patents
Turbine Steam cylinder structure Download PDFInfo
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- CN207728403U CN207728403U CN201721670639.6U CN201721670639U CN207728403U CN 207728403 U CN207728403 U CN 207728403U CN 201721670639 U CN201721670639 U CN 201721670639U CN 207728403 U CN207728403 U CN 207728403U
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Abstract
The utility model is related to steam turbine technology fields, more particularly to a kind of Turbine Steam cylinder structure, inner casing including outer shell and set on outer cylinder interior, outer shell is included in the outer shell upper half connected at horizontal flange and outer shell lower half, inner casing is included in the inner casing upper half connected at horizontal flange and inner casing lower half, air intake is accordingly offered in outer shell upper half and inner casing upper half, upper admission valve and inlet sleeve are equipped at upper air intake, one end of inlet sleeve is equipped with the first flange being detachably connected with upper admission valve, and it is detachably connected with inner casing upper half in other end insertion outer shell upper half, the second flange being detachably connected with outer shell upper half is equipped on the excircle of inlet sleeve.It can be realized under the premise of not destroying upper admission valve with steam conveying pipe gate oxide integrity and take off cylinder, can fully simplify on-site construction processes, reduce construction workload, shortening takes off cylinder maintenance cycle, reduces the repair and maintenance cost of unit.
Description
Technical field
The utility model is related to steam turbine technology field more particularly to a kind of Turbine Steam cylinder structures.
Background technology
The cylinder of steam turbine as a kind of in high temperature, the power station equipment of high steam environment high speed rotary work, due to
Its working environment is severe, and complicated and changeable, therefore it is required that in its service phase periodically, in a planned way take off cylinder, with to cylinder and its
Internal high temperature, high voltage component safeguarded, is overhauled and life appraisal etc..
It is Flow Field Distribution of the optimization cylinder into vapour chamber, reduces high-quality, high-grade steam energy loss and dissipation, and to vapour
Cylinder is through-flow downstream generates actively impact, at present horizontal flange cylinder left and right side air intake using high infraversion malposition arrange tangentially into
The mode of vapour.As shown in Figure 1, existing level split cylinder includes outer shell and inner casing, outer shell is included at horizontal flange and connects
The outer shell upper half 01 and outer shell lower half 02 connect, inner casing includes inner casing upper half 03 and inner casing lower half 04, is constituted between inner casing and rotor
Into vapour chamber, steam discharge chamber is constituted between outer shell and inner casing.It is accordingly offered in outer shell upper half 01 and inner casing upper half 03 enterprising
Lower steam inlet port, upper air intake and lower steam inlet port relative cylinder are accordingly offered in steam ports, outer shell lower half 02 and inner casing lower half 04
Center be symmetrically distributed.Upper admission valve 05 and lower admission valve 06 are separately installed at upper air intake and lower steam inlet port,
Upper admission valve 05 realizes connection by flange and bolt respectively with outer shell upper half 01, lower admission valve 06 with outer shell lower half 02,
By steam discharge cavity seal；One end of enterprising vapour connecting pipe 07 in upper admission valve 05 is connected with inner casing upper half 03, is formed
Enterprising vapour channel, in lower admission valve 06 under be connected into vapour connecting pipe 08 with inner casing lower half 04, into vapour channel under formation.
Steam conveying pipe respectively in upper admission valve 05 enterprising vapour connecting pipe 07 and lower admission valve 06 under into vapour connect
Take over road 08 is connected, from steam conveying pipe through enterprising vapour connecting pipe 07 and under into vapour connecting pipe 08 into vapour chamber
Convey steam.
The cylinder of this structure, for the upper air intake of high position arrangement, needs first to release when carrying out taking off cylinder repair and maintenance
The connecting of enterprising vapour connecting pipe 07 and steam conveying pipe and inner casing upper half 03 in upper admission valve 05, upper admission valve 05 with
After the connection of outer shell upper half 01, then outer shell upper half 01 and connection of the outer shell lower half 02 at horizontal flange are released, realizes upper half
Cylinder body takes off cylinder.The method that cylinder is taken off in Practical Project mainly has following two.
A kind of method be for steam conveying pipe with enterprising vapour connecting pipe 07 is welded in upper admission valve 05 the case where,
On-site cutting first carried out to steam conveying pipe and enterprising vapour connecting pipe 07, admission valve 05 and steam conveying pipe in realization
Separation, then release upper admission valve 05 successively and connect with the bolt of outer shell lower half 02 with outer shell upper half 01, outer shell upper half 01
Cylinder is taken off in realization.This method is disadvantageous in that, increases after steam conveying pipe on-site cutting, cylinder maintenance again
Welding and the working links such as weld inspection, within the unit durability period continually to steam conveying pipe carry out cutting and
Welding, is unfavorable for the safe and stable operation of unit, while increasing maintenance of the power plant to unit, the cost of overhaul.
Another method be by the connection type of enterprising vapour connecting pipe 07 in steam conveying pipe and upper admission valve 05 by
Welding is changed to flanged joint, and it is identical as first method to take off cylinder process.It cuts at the scene that this method has evaded steam conveying pipe
It cuts and welds, but since steam conveying pipe caliber is larger, operating ambient temperature is high, and pipeline pressure-bearing is big, long term high temperature operation
Easily there is the problems such as stress relaxation in sealing surface bolt afterwards, increases the risk of flanged joint regional seal leakage.
Above two takes off cylinder method and is required to release the connection of steam conveying pipe and upper admission valve 05, and it is multiple to take off cylinder process
It is miscellaneous, cause to take off cylinder maintenance cycle length, unit maintenance maintenance cost height.
Utility model content
The technical problem to be solved by the present invention is to provide one kind destroying steam conveying pipe and inlet valve
The Turbine Steam cylinder structure for taking off cylinder is realized under the premise of door gate oxide integrity, to overcome the drawbacks described above of the prior art.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution：A kind of Turbine Steam cylinder structure, packet
Outer shell and the inner casing set on outer cylinder interior are included, outer shell is included in the outer shell upper half connected at horizontal flange and outer shell lower half, interior
Cylinder is included in the inner casing upper half connected at horizontal flange and inner casing lower half, is accordingly offered in outer shell upper half and inner casing upper half
Upper air intake is equipped with upper admission valve and inlet sleeve at upper air intake, and one end of inlet sleeve is equipped with can with upper admission valve
The first flange of dismantling connection, and it is detachably connected with inner casing upper half in other end insertion outer shell upper half, in inlet sleeve
Excircle is equipped with the second flange being detachably connected with outer shell upper half.
Preferably, inlet sleeve is inserted on one end end face in outer shell upper half circumferentially arranged with an annular plug connector, inner casing
Upper half is circumferentially arranged with an annular plug socket at upper air intake, and annular plug socket is towards circumferentially opening in the one side of inlet sleeve
Equipped with annular inserting groove, annular plug connector be inserted in annular inserting groove and with annular inserting groove clearance fit；In inlet sleeve
A gasket is equipped between upper admission valve, the thickness of gasket is not less than the length that annular plug connector is inserted into annular inserting groove.
Preferably, the section configuration of annular plug connector is L-shaped, and L-shaped annular plug connector includes the end face with inlet sleeve
The interconnecting piece that is connected and with the matched plug division of annular inserting groove, interconnecting piece is perpendicular with plug division.
Preferably, one end that inlet sleeve is inserted into outer shell upper half is connected with an annular fixing member, and annular fixing member is remote
Annular flange is extended radially out on one end peripheral surface from inlet sleeve, interconnecting piece is connected in end face and the annular of inlet sleeve
Between flange.
Preferably, on the flange face of first flange and enterprising circumferentially arranged with annular convex platform on the both ends end face of gasket
It is circumferentially offered on the flange face of steam valve door and coordinates the annular groove to connect with annular convex platform.
Preferably, sealing ring is equipped between annular groove and annular convex platform.
Preferably, it is accordingly opened up on the flange and gasket of upper admission valve or in first flange and gasket useful
In through the jacking screw hole of jacking screw.
Preferably, the area of gasket is less than the area of the flange face of upper admission valve and the flange face of first flange, upper
It is accordingly offered on the flange and first flange of admission valve for through the lifting bolt hole of lifting bolt, lifting bolt hole
Positioned at the both sides of gasket in the horizontal direction, and when lifting bolt passes through lifting bolt hole, does not intersect with gasket.
Preferably, Lengthened bolt is equipped between second flange and outer shell upper half, Turbine Steam cylinder structure is equipped with taking off cylinder work
Skill cushion block, the thickness for taking off cylinder technique cushion block is not less than the length that annular plug connector is inserted into annular inserting groove, and is not more than gasket
Thickness, after taking off cylinder technique cushion block for the second flange of inlet sleeve and outer shell upper half to release connection relation during taking off cylinder
It is placed between second flange and outer shell upper half, and connect second flange and outer shell upper half by Lengthened bolt to take off cylinder technique cushion block
It grips.
Compared with prior art, the utility model has significant progress：
The Turbine Steam cylinder structure of the utility model only need to first release the company of inlet sleeve and upper admission valve when taking off cylinder
Connect, then release successively inlet sleeve and the connection of outer shell upper half, the connection of inlet sleeve and inner casing upper half, outer shell upper half with it is outer
The connection of cylinder lower half, you can that realizes outer shell upper half takes off cylinder, without destroying the connection of upper admission valve and steam conveying pipe
Integrality can fully simplify on-site construction processes, reduce construction workload, and shortening takes off cylinder maintenance cycle, reduces the inspection of unit
Repair maintenance cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of the steam turbine of horizontal flange in the prior art.
Fig. 2 is the overall schematic of the Turbine Steam cylinder structure of the utility model embodiment.
Fig. 3 is the enlarged diagram in the portions A in Fig. 2.
Fig. 4 is the enlarged diagram in the portions B in Fig. 3.
Fig. 5 be the utility model embodiment Turbine Steam cylinder structure in gasket structural schematic diagram.
Fig. 6 is the first flange of the Turbine Steam cylinder structure inlet sleeve of the utility model embodiment and upper admission valve
The schematic diagram that flange is connected.
Fig. 7 is take off cylinder technique cushion block and inlet sleeve that the Turbine Steam cylinder structure of the utility model embodiment is equipped with
Two flanges and the matched schematic diagram of outer shell upper half.
In Fig. 1：
01, outer shell upper half 02, outer shell lower half 03, inner casing upper half
04, inner casing lower half 05, upper admission valve 06, lower admission valve
07, enterprising vapour connecting pipe 08, under into vapour connecting pipe
In Fig. 2 to Fig. 7：
1, outer shell upper half 2, outer shell lower half 3, inner casing upper half
4, inner casing lower half 5, upper admission valve 6, lower admission valve
10, inlet sleeve 101, first flange 102, second flange
103, lifting bolt hole 11, annular plug connector 111, interconnecting piece
112, plug division 12, annular plug socket 121, annular inserting groove
13, annular fixing member 131, annular flange 14, gasket
140, through-hole 141, annular convex platform 142, jacking screw hole
143, hanging bolt hole 15, sealing ring 16, Lengthened bolt
17, cylinder technique cushion block is taken off
Specific implementation mode
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.These embodiments are only
For illustrating the utility model, and it is not limitation of the utility model.
In the description of the present invention, it should be noted that term "center", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot understand
For limitations of the present invention.Term " first ", " second " are used for description purposes only, and are not understood to indicate or imply phase
To importance.Term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, can also be can
Dismantling connection, or be integrally connected；It can be mechanical connection, can also be electrical connection；It can be directly connected, can also pass through
Intermediary is indirectly connected, and can be the connection inside two elements.For the ordinary skill in the art, Ke Yigen
Understand the concrete meaning of above-mentioned term in the present invention according to concrete condition.In addition, the meaning of " plurality " is two or two
More than.
As shown in Figures 2 to 7, a kind of embodiment of the Turbine Steam cylinder structure of the utility model.As shown in Fig. 2, this reality
Apply example Turbine Steam cylinder structure be horizontal flange cylinder comprising outer shell and the inner casing set on outer cylinder interior, inner casing with turn
It is constituted between son into vapour chamber, steam discharge chamber is constituted between outer shell and inner casing.Outer shell be included in connected at horizontal flange it is outer
Cylinder upper half 1 and outer shell lower half 2, inner casing are included in the inner casing upper half 3 connected at horizontal flange and inner casing lower half 4, outer shell upper half 1
With upper air intake is accordingly offered in inner casing upper half 3, accordingly offer lower steam inlet port in outer shell lower half 2 and inner casing lower half 4,
The center of upper air intake and lower steam inlet port relative cylinder is symmetrically distributed.
In the present embodiment, upper admission valve 5 and inlet sleeve 10, upper admission valve 5 and steam are equipped at upper air intake
Conveyance conduit (not shown) is connected.One end of inlet sleeve 10 be equipped with first flange 101, first flange 101 with it is enterprising
The flange of steam valve door 5 is detachably connected, the other end of inlet sleeve 10 be inserted at upper air intake in outer shell upper half 1 and with it is interior
Cylinder upper half 3 is detachably connected, by steam conveying pipe, upper admission valve 5 and inlet sleeve 10 constitute in inner casing into vapour
Chamber is connected and closed into vapour channel.Second flange 102, second flange 102 are equipped on the excircle of inlet sleeve 10
It is detachably connected with the end face in outer shell upper half 1 at air intake, and by the steam discharge cavity seal between outer shell and inner casing.
The Turbine Steam cylinder structure of the present embodiment only need to first release inlet sleeve 10 and upper inlet valve when taking off cylinder as a result,
Then the connection of door 5 releases the connection of inlet sleeve 10 and outer shell upper half 1, the company of inlet sleeve 10 and inner casing upper half 3 successively
Connect, the connection of outer shell upper half 1 and outer shell lower half 2, you can that realizes outer shell upper half 1 takes off cylinder, without destroy upper admission valve 5 with
The gate oxide integrity of steam conveying pipe can fully simplify on-site construction processes, reduce construction workload, and cylinder repair is taken off in shortening
Period reduces the repair and maintenance cost of unit.
As shown in Figure 3 and Figure 4, in the present embodiment, inlet sleeve 10 is inserted into one end end face upper edge week in outer shell upper half 1
To equipped with an annular plug connector 11, inner casing upper half 3 is at upper air intake circumferentially arranged with an annular plug socket 12, annular plug connector
11 and annular plug socket 12 be coaxially disposed with inlet sleeve 10.One side upper edge week of the annular plug socket 12 towards inlet sleeve 10
To annular inserting groove 121 is offered, i.e. the opening of annular inserting groove 121 is towards annular plug connector 11.Annular plug connector 11 plugs
In annular inserting groove 121, when cold conditions is installed, annular plug connector 11 and 121 clearance fit of annular inserting groove.In the present embodiment
Annular plug connector 11 and annular plug socket 12 be made of different materials, when the hot operation of unit, 11 He of annular plug connector
Annular plug socket 12 can realize tight fit under the action of inside and outside differential pressure and heat expansion difference, reach and separate into vapour chamber and steam discharge
The purpose of chamber.The depth and thickness of annular inserting groove 121 on annular plug socket 12 should be according to the actual working environments of cylinder
It is configured, need to ensure that its structural strength can adapt to the requirement of various operating mode service conditions.Pass through annular plug connector 11 and ring
The mating mode of annular inserting groove 121 on shape plug socket 12 realizes the detachable of inlet sleeve 10 and inner casing upper half 3
Connection, due to annular plug connector 11 under cold conditions and 121 clearance fit of annular inserting groove, only needs to insert into vapour when taking off cylinder
Pipe 10 is moved along the direction far from inner casing upper half 3, and annular plug connector 11 is made to exit annular inserting groove 121, you can is realized and is inserted into vapour
The separation of pipe 10 and inner casing upper half 3.
For the mobile offer space to inlet sleeve 10 when taking off cylinder, between inlet sleeve 10 and upper admission valve 5
Equipped with a gasket 14, gasket 14 is mounted between the first flange 101 and the flange of upper admission valve 5 of inlet sleeve 10, and with
The first flange 101 of inlet sleeve 10 and the flange of upper admission valve 5 are detachably connected, as shown in figure 5, the center of gasket 14
Equipped with the through-hole 140 that diameter and 10 internal diameter of inlet sleeve match, the top of gasket 14 is equipped with for installing rising for hanging bolt
Hanger bolt hole 143.After releasing the connection between inlet sleeve 10 and upper admission valve 5 when taking off cylinder, gasket 14 is inserted from into vapour
It is hung out between pipe 10 and upper admission valve 5, the spacing between inlet sleeve 10 and upper admission valve 5 so that inlet sleeve 10 can
With along the direction far from inner casing upper half 3, admission valve 5 moves upward.To ensure to make annular plug connector by mobile inlet sleeve 10
11 exit annular inserting groove 121 completely, and the thickness of gasket 14 should be not less than annular plug connector 11 and be inserted into annular inserting groove 121
Length, to provide enough mobile spaces for inlet sleeve 10.
Preferably, as shown in figure 4, the section configuration of annular plug connector 11 is L-shaped, L-shaped annular plug connector 11 includes phase
Mutually vertical interconnecting piece 111 and plug division 112, interconnecting piece 111 are connected with the end face of inlet sleeve 10, plug division 112 and ring
Shape inserting groove 121 matches.
Further, one end that inlet sleeve 10 is inserted into outer shell upper half 1 is connected with an annular fixing member 13, and annular is fixed
Part 13 is coaxially disposed with inlet sleeve 10.Annular fixing member 13 extends radially out on one end peripheral surface far from inlet sleeve 10
Annular flange 131, the interconnecting piece 111 of annular plug connector 11 are connected in the annular of the end face and annular fixing member 13 of inlet sleeve 10
Between flange 131, annular plug connector 11 is gripped by annular fixing member 13 and being fastenedly connected for inlet sleeve 10.
Further, it is possible to be sequentially connected the annular flange 131 of annular fixing member 13 in an axial direction by lock-screw, annular is inserted
Annular fixing member 13, annular plug connector 11 and inlet sleeve 10 are realized in the end face of the interconnecting piece 111 and inlet sleeve 10 of fitting 11
Circumferentially opposed fixation, prevent annular fixing member 13, annular plug connector 11 and inlet sleeve 10 from relatively rotating.
Preferably, annular fixing member 13 is fastenedly connected with inlet sleeve 10 by screw-thread fit realization.In the present embodiment,
The inner peripheral surface that inlet sleeve 10 is inserted into one end in outer shell upper half 1 is equipped with internal thread, in annular fixing member 13 far from convex annular
One end of edge 131 is equipped with external screw thread, and the external screw thread on annular fixing member 13 is connect with the screw-internal thread fit in inlet sleeve 10.Into
One step, the internal diameter of annular fixing member 13 and the internal diameter of the inlet sleeve 10 match, and inlet sleeve 10 is inserted into outer shell upper half 1
One end be equipped with wide diameter portion for accommodating annular fixing member 13, the internal thread is arranged on the inner peripheral surface of the wide diameter portion.
Preferably, annular plug socket 12 is fastenedly connected with inner casing upper half 3 by screw-thread fit realization.It is interior in the present embodiment
Cylinder upper half 3 is equipped with external screw thread at upper air intake, and the inner peripheral surface of annular plug socket 12 is equipped with internal thread, on annular plug socket 12
Internal thread and inner casing upper half 3 on external screw thread be connected.
It should be noted that inlet sleeve 10, annular fixing member 13 in the utility model and annular plug connector 11 can be with
For the separate piece for the connection that cooperates in the present embodiment, an integrally formed single piece can also be configured to；Annular plug socket
12 and inner casing upper half 3 can be the separate piece of connection of cooperating in the present embodiment, can also be configured to one it is integrally formed
Single piece.
As shown in figure 5, for the compactness that guarantee inlet sleeve 10 is connect with upper admission valve 5, in the present embodiment, in gasket
Circumferentially arranged with annular convex platform 141 on 14 both ends end face in an axial direction, in the flange face of the first flange 101 of inlet sleeve 10
The annular groove to connect with 141 cooperations of convex annular is circumferentially offered on the flange face of upper and upper admission valve 5.Assembly
When, on the flange face of the first flange 101 of inlet sleeve 10 and the flange face of upper admission valve 5 both ends of the surface with gasket 14 respectively
Docking, and the annular convex platform 141 in 14 both ends of the surface of gasket is inserted into 10 first flange of inlet sleeve, 101 flange face and enterprising vapour respectively
In annular groove on 5 flange face of valve, realizes and be fitted close.First flange 101, gasket 14 and the enterprising vapour of inlet sleeve 10
Multiple bolts hole are circumferentially accordingly offered on the flange of valve 5, by the first flange for sequentially passing through inlet sleeve 10
101, multiple connection bolts of multiple bolts hole on the flange of gasket 14 and upper admission valve 5 realize the first of inlet sleeve 10
The flange of flange 101, gasket 14 and upper admission valve 5 is fastenedly connected, further, in 10 first flange of inlet sleeve, 101 method
It is equipped with sealing between the annular convex platform 141 of 14 both ends of the surface of annular groove and gasket on 5 flange face of blue face and upper admission valve
Circle 15, to ensure sealing performance.Preferably, to ensure gasket 14 and 10 first flange 101 of inlet sleeve and upper admission valve 5
The contact stress of sealing surface between flange, the annular convex platform 141 on gasket 14 are that continuous whole circle boss is correspondingly inserted into vapour
Annular groove on 10 first flange of pipe, 101 flange face and 5 flange face of upper admission valve is continuous whole circle groove, sealing ring
15 be continuous whole circle sealing ring.
Unit operation for a period of time after, the flange of gasket 14 and 10 first flange 101 of inlet sleeve and upper admission valve 5
Between sealing surface the phenomenon that will appear occlusion, inlet sleeve 10, gasket 14 and upper admission valve 5 are suitable when in order to enable to take off cylinder
Profit separation, it is preferable that the present embodiment is accordingly offered on the flange and gasket 14 of upper admission valve 5 for through jack-up spiral shell
The first flange 101 of inlet sleeve 10, gasket 14 and upper admission valve 5 are removed when taking off cylinder in the jacking screw hole 142 of nail
After connection bolt on flange, it is screwed into jacking screw into jacking screw hole 142, jacking screw is made to be pressed on inlet sleeve 10
In first flange 101, by rotating jacking screw, sealing surface between gasket 14 and the flange of upper admission valve 5 may be implemented
Initial gross separation makes the annular convex platform 141 on gasket 14 be exited out of annular groove on 5 flange face of upper admission valve, to just
In lifting gasket 14.It is of course also possible to accordingly be opened up in the first flange 101 of inlet sleeve 10 and gasket 14 for running through
The jacking screw hole 142 of jacking screw, it is close between gasket 14 and the first flange 101 of inlet sleeve 10 to be realized when taking off cylinder
The initial gross separation of cover.Jacking screw hole 142 on gasket 14 can be arranged multiple, it is preferable that multiple screw holes 142 are opposite to be padded
Piece 14 is centrosymmetrically arranged, and jacking screw hole sets on the flange of upper admission valve 5 or the first flange 101 of inlet sleeve 10
Seated position and quantity are then corresponding with gasket 14.
To ensure the safety of lifting gasket 14, it is preferable that as shown in Figure 5 and Figure 6, by the face of gasket 14 in the present embodiment
Product is set smaller than the area of the flange face of 10 first flange 101 of flange face and inlet sleeve of admission valve 5, and enterprising
It is accordingly offered for the lifting spiral shell through lifting bolt in the flange of steam valve door 5 and the first flange 101 of inlet sleeve 10
Keyhole 103, lifting bolt hole 103 are located at the both sides of gasket 14 in the horizontal direction, and when lifting bolt passes through lifting bolt hole 103
Do not intersect with gasket 14.When taking off cylinder, in gasket 14 and 5 flange of upper admission valve or between 10 first flange 101 of inlet sleeve
Sealing surface initial gross separation after, lifting bolt is screwed into lifting bolt hole 103, by lifting bolt by upper admission valve 5
The first flange 101 of flange and inlet sleeve 10 is connected and fixed, can make enterprising steam valve door 5 flange and inlet sleeve 10
The spacing that initial gross separation is kept between one flange 101, to maintain stablizing relatively for upper admission valve 5 and inlet sleeve 10, then
Back-out jacking screw, you can lifted by crane to gasket 14, since lifting bolt is located at both sides in the horizontal direction of gasket 14 and not
Intersect with gasket 14, therefore the lifting of gasket 14 will not be hindered.Preferably, the supporting surface of lifting bolt is arranged in upper admission valve
On 5 flange.Multiple lifting spiral shells can be respectively set in the flange of upper admission valve 5 and the first flange 101 of inlet sleeve 10
Keyhole 103, the central symmetry distribution of multiple 103 relative entrance of lifting bolt hole intubations 10.
It is circumferentially accordingly offered in the present embodiment, in the second flange 102 and outer shell upper half 1 of inlet sleeve 10 more
A bolt hole passes through multiple bolts hole in the second flange 102 of inlet sleeve 10 and multiple bolts in outer shell upper half 1
Multiple connection bolts that hole connects correspondingly realize that the second flange 102 of inlet sleeve 10 and outer shell upper half 1 are fastenedly connected.
When taking off cylinder, the connection bolt between the second flange 102 of inlet sleeve 10 and outer shell upper half 1 need to be removed, make inlet sleeve 10 with
Outer shell upper half 1 detaches.In order to realize that the integral lifting of inlet sleeve 10 and outer shell upper half 1, the stability of guarantee lifting process are excellent
Selection of land, as shown in Figure 3 and Figure 7, the present embodiment are equipped between the second flange 102 and outer shell upper half 1 of inlet sleeve 10 and lengthen
Bolt 16, and the Turbine Steam cylinder structure of the present embodiment is equipped with taking off cylinder technique cushion block 17.Preferably, Lengthened bolt 16 can edge
The axial direction setting of 10 second flange 102 of inlet sleeve is multiple.In assembly, Lengthened bolt 16 runs through the second method of inlet sleeve 10
Orchid 102 is fastenedly connected with outer shell upper half 1, the connection bolt one between the second flange 102 and outer shell upper half 1 of inlet sleeve 10
It rises, the second flange 102 of inlet sleeve 10 and outer shell upper half 1 is fastenedly connected.It, will after gasket 14 lifts by crane when taking off cylinder
Connection bolt and Lengthened bolt 16 between the second flange 102 and outer shell upper half 1 of inlet sleeve 10 are all removed so that into vapour
Intubation 10 can be detached from outer shell upper half 1, and admission valve 5 moves upward, completely de- in inlet sleeve 10 to be detached from inner casing upper half 3
After inner casing upper half 3, stop mobile inlet sleeve 10, by the second method of outfit taken off cylinder technique cushion block 17 and be placed in inlet sleeve 10
Between orchid 102 and outer shell upper half 1, and by Lengthened bolt 16 again across the second flange 102 of inlet sleeve 10 and outer shell upper half 1
The second flange 102 of inlet sleeve 10 and outer shell upper half 1 are fastenedly connected and will take off the clamping of cylinder technique cushion block 17 admittedly by connection
It is fixed, to keep being stably connected with for inlet sleeve 10 and outer shell upper half 1, ensure integral lifting inlet sleeve 10 and outer shell upper half 1
When stability and safety.Annular plug connector 11 when to ensure lifting in 10 first flange 101 of inlet sleeve has been maintained at
The position for exiting annular inserting groove 121 on annular plug socket 12 entirely, annular grafting should be not less than by taking off the thickness of cylinder technique cushion block 17
Part 11 is inserted into the length in annular inserting groove 121；Meanwhile for ensure lifting when inlet sleeve 10 second flange 102 not with it is upper
The flange pressure of admission valve 5 contacts, and takes off the thickness of cylinder technique cushion block 17 and should be not more than the thickness of gasket 14.
To sum up, the cylinder process of taking off of the Turbine Steam cylinder structure of the present embodiment includes the following steps：
Step 1: first releasing the relationship in succession between inlet sleeve 10 and upper admission valve 5.Specially：It first removes into vapour
Connection bolt in the first flange 101 of intubation 10, the flange of gasket 14 and upper admission valve 5；Then to jacking screw hole 142
It is inside screwed into jacking screw, so that jacking screw is pressed in the first flange 101 of inlet sleeve 10, and rotate jacking screw, makes pad
Sealing surface initial gross separation between piece 14 and the flange of upper admission valve 5, seals between gasket 14 and the flange of upper admission valve 5
Twice of the initial gross separation spacing in face not less than 141 height of annular convex platform on gasket 14；It has been screwed into again into lifting bolt hole 103
The first flange 101 of the flange of upper admission valve 5 and inlet sleeve 10, is connected and fixed to keep by weight bolt by lifting bolt
Initial gross separation spacing；Finally back-out jacking screw, lifts by crane gasket 14.
Step 2: then releasing the connection relation between inlet sleeve 10 and inner casing upper half 3, specially：It is risen in gasket 14
It hangs after finishing, leaving region between 10 first flange 101 of 5 flange of admission valve and inlet sleeve completely, will first be inserted into vapour
Connection bolt and Lengthened bolt 16 between 10 second flange 102 of pipe and outer shell upper half 1 are all removed, and 10 He of inlet sleeve is released
Connection relation between outer shell upper half 1；Then lifting bolt is turned, driving inlet sleeve 10, admission valve 5 moves upward, until into
The annular plug connector 11 that vapour is intubated in 10 first flanges 101 exits the annular inserting groove 121 on annular plug socket 12 completely；It tears open again
Except lifting bolt, the cylinder technique cushion block 17 of taking off of outfit is placed between the second flange 102 of inlet sleeve 10 and outer shell upper half 1,
And pass through the second flange 102 of inlet sleeve 10 to be connect with outer shell upper half 1 Lengthened bolt 16, make the second method of inlet sleeve 10
Orchid 102, which is fastenedly connected with outer shell upper half 1 and will take off cylinder technique cushion block 17, to be gripped.
Step 3: finally remove outer shell upper half 1 and connection of the outer shell lower half 2 at horizontal flange, integral lifting is into vapour
Intubation 10 and outer shell upper half 1, that realizes outer shell upper half takes off cylinder.
Take off cylinder, maintenance and safeguard complete after, cylinder is reinstalled, installation procedure and take off cylinder process on the contrary,
Repeats no more herein.
In addition, the Turbine Steam cylinder structure of the present embodiment, is equipped with lower admission valve 6, lower admission valve 6 at lower steam inlet port
It is connect also by an inlet sleeve between lower steam inlet port, under the inlet sleeve and lower admission valve 6, outer shell lower half 2 and inner casing
Connection knot of the connection structure between inlet sleeve 10 and upper admission valve 5, outer shell upper half 1 and inner casing upper half 3 between half 4
Structure is identical, and it will not go into details herein.
In conclusion the Turbine Steam cylinder structure of the present embodiment can not destroy upper admission valve 5 and steam pipeline
It is realized under the premise of road gate oxide integrity and takes off cylinder, can fully simplify on-site construction processes, reduce construction workload, cylinder is taken off in shortening
Maintenance cycle reduces the repair and maintenance cost of unit.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvement and replacement can also be made, these change
The scope of protection of the utility model is also should be regarded as into replacement.
Claims (9)
1. a kind of Turbine Steam cylinder structure, including outer shell and the inner casing set on the outer cylinder interior, the outer shell are included in level
The outer shell upper half (1) and outer shell lower half (2) connected at split, the inner casing include on the inner casing connected at horizontal flange
Half (3) and inner casing lower half (4) accordingly offers air intake in the outer shell upper half (1) and the inner casing upper half (3),
It is characterized in that, upper admission valve (5) and inlet sleeve (10), one end of the inlet sleeve (10) is equipped at the upper air intake
Equipped with the first flange (101) being detachably connected with the upper admission valve (5), and the other end is inserted into the outer shell upper half (1)
It is interior detachably connected with the inner casing upper half (3), on the excircle of the inlet sleeve (10) be equipped with on the outer shell
The second flange (102) that half (1) is detachably connected.
2. Turbine Steam cylinder structure according to claim 1, which is characterized in that the inlet sleeve (10) is inserted into described outer
Circumferentially arranged with an annular plug connector (11) on one end end face in cylinder upper half (1), the inner casing upper half (3) is in the enterprising vapour
Circumferentially arranged with an annular plug socket (12) at mouthful, the annular plug socket (12) is towards in the one side of the inlet sleeve (10)
Circumferentially offer annular inserting groove (121), the annular plug connector (11) be inserted in the annular inserting groove (121) and with
Described annular inserting groove (121) clearance fit；A pad is equipped between the inlet sleeve (10) and the upper admission valve (5)
The thickness of piece (14), the gasket (14) is inserted into not less than the annular plug connector (11) in the annular inserting groove (121)
Length.
3. Turbine Steam cylinder structure according to claim 2, which is characterized in that the section shape of the annular plug connector (11)
Shape is L-shaped, and the L-shaped annular plug connector (11) includes the interconnecting piece being connected with the end face of the inlet sleeve (10)
(111) and with described annular inserting groove (121) matched plug division (112), the interconnecting piece (111) and the plug division
(112) perpendicular.
4. Turbine Steam cylinder structure according to claim 3, which is characterized in that the inlet sleeve is inserted (10) and entered outside described
One end in cylinder upper half (1) is connected with an annular fixing member (13), and the annular fixing member (13) is far from the inlet sleeve
(10) annular flange (131) is extended radially out on one end peripheral surface, the interconnecting piece (111) is connected in the inlet sleeve
(10) between end face and the annular flange (131).
5. Turbine Steam cylinder structure according to claim 2, which is characterized in that on the both ends end face of the gasket (14)
Circumferentially arranged with annular convex platform (141), on the flange face of the first flange (101) and the flange of the upper admission valve (5)
It is circumferentially offered on face and coordinates the annular groove to connect with the annular convex platform (141).
6. Turbine Steam cylinder structure according to claim 5, which is characterized in that the annular groove and the annular convex platform
(141) sealing ring (15) is equipped between.
7. Turbine Steam cylinder structure according to claim 2, which is characterized in that in the flange of the upper admission valve (5)
It is accordingly offered for through top on the gasket (14) or in the first flange (101) and the gasket (14)
Play the jacking screw hole (142) of screw.
8. Turbine Steam cylinder structure according to claim 2, which is characterized in that the area of the gasket (14) is less than described
The area of the flange face of upper admission valve (5) and the flange face of the first flange (101), in the upper admission valve (5)
It is accordingly offered on flange and the first flange (101) for through the lifting bolt hole (103) of lifting bolt, described
Weight bolt hole (103) is located at the both sides of the gasket (14) in the horizontal direction, and the lifting bolt passes through the lifting bolt
Gasket (14) described in hole (103) Shi Buyu intersects.
9. Turbine Steam cylinder structure according to claim 2, which is characterized in that the second flange (102) with it is described outer
Lengthened bolt (16) is equipped between cylinder upper half (1), the Turbine Steam cylinder structure is described to take off equipped with taking off cylinder technique cushion block (17)
The thickness of cylinder technique cushion block (17) is inserted into the length in the annular inserting groove (121) not less than the annular plug connector (11),
And no more than the thickness of the gasket (14), the cylinder technique cushion block (17) of taking off is for inlet sleeve during taking off cylinder
(10) second flange (102) and the outer shell upper half (1) release connection relation be placed on the second flange (102) with it is described
Between outer shell upper half (1), and the second flange (102) and the outer shell upper half (1) are connected by the Lengthened bolt (16)
The cylinder technique cushion block (17) of taking off is gripped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721670639.6U CN207728403U (en) | 2017-12-05 | 2017-12-05 | Turbine Steam cylinder structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721670639.6U CN207728403U (en) | 2017-12-05 | 2017-12-05 | Turbine Steam cylinder structure |
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| Publication Number | Publication Date |
|---|---|
| CN207728403U true CN207728403U (en) | 2018-08-14 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905853A (en) * | 2017-12-05 | 2018-04-13 | 上海电气电站设备有限公司 | Turbine Steam cylinder structure |
| CN107989663A (en) * | 2018-01-10 | 2018-05-04 | 东方电气集团东方汽轮机有限公司 | Horizontal tangential is into vapour formula steam turbine and valve connecting structure |
| CN114396323A (en) * | 2022-01-18 | 2022-04-26 | 中电华创电力技术研究有限公司 | Intelligent early warning method and device for cylinder uncovering maintenance of steam turbine body |
-
2017
- 2017-12-05 CN CN201721670639.6U patent/CN207728403U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905853A (en) * | 2017-12-05 | 2018-04-13 | 上海电气电站设备有限公司 | Turbine Steam cylinder structure |
| CN107989663A (en) * | 2018-01-10 | 2018-05-04 | 东方电气集团东方汽轮机有限公司 | Horizontal tangential is into vapour formula steam turbine and valve connecting structure |
| CN114396323A (en) * | 2022-01-18 | 2022-04-26 | 中电华创电力技术研究有限公司 | Intelligent early warning method and device for cylinder uncovering maintenance of steam turbine body |
| CN114396323B (en) * | 2022-01-18 | 2024-04-26 | 中电华创电力技术研究有限公司 | Intelligent early warning method and device for overhauling uncovering cylinder of turbine body |
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