CN214331874U

CN214331874U - Plugging device for steam turbine pipeline maintenance

Info

Publication number: CN214331874U
Application number: CN202021449036.5U
Authority: CN
Inventors: 吕昌恒
Original assignee: Huainan Taineng Power Engineering Co Ltd
Current assignee: Huainan Taineng Power Engineering Co Ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-10-01
Anticipated expiration: 2030-07-21

Abstract

The utility model discloses a plugging device that steam turbine pipeline overhauld and use, include: the auxiliary steam pipeline is arranged on one side of the main steam pipeline and used for receiving steam in the main steam pipeline, a plurality of groups of flow discharging ports communicated with the auxiliary steam pipeline are formed in the surface of the main steam pipeline, the flow discharging ports are internally provided with plugging pieces capable of elastically deforming, the plugging pieces are plugged in the main steam pipeline when being expanded and deformed, the main steam pipeline can be cut off, the main steam pipeline at the cut-off position is free of steam influence and convenient to overhaul, steam in the main steam pipeline at two sides of the cut-off position can be led into the auxiliary steam pipeline to circulate, the steam cannot be stopped to be supplied, the plugging pieces are plugged in the flow discharging ports when being shrunk and deformed, and the main steam pipeline can normally convey steam when the flow discharging ports are plugged.

Description

Plugging device for steam turbine pipeline maintenance

Technical Field

The utility model relates to a steam turbine technical field, concretely relates to plugging device that steam turbine pipeline overhauld and use.

Background

The steam turbine is also called as a steam turbine engine, and is a rotary steam power device.A high-temperature high-pressure steam passes through a fixed nozzle to become an accelerated airflow and then is sprayed onto blades, so that a rotor provided with blade rows rotates, and simultaneously, the rotor does work outwards. Steam turbines are the main equipment of modern thermal power plants, and are also used in the metallurgical industry, chemical industry and ship power plants.

In the prior art, equipment is often required to be stopped when a pipeline for receiving steam by a steam turbine is overhauled, so that the phenomenon that the steam which changes continuously in the working process generates wrong judgment on the pipeline overhauling is avoided, but the pipeline is difficult to overhaul under the condition that the stopping cost is high in the running process or the steam turbine for power generation is difficult to stop; therefore, the plugging device for overhauling the turbine pipeline is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The problem to above-mentioned prior art exists, the utility model provides a plugging device that steam turbine pipeline overhauld and use sets up in the auxiliary steam pipeline that is arranged in receiving main steam pipeline steam of main steam pipeline one side, and main steam pipeline's surface is equipped with the mouth that flows off of the auxiliary steam pipeline of multiunit intercommunication, but be equipped with elastic deformation's shutoff piece in the mouth that flows off, the shutoff can block main steam pipeline in main steam pipeline when shutoff piece expansion deformation, cuts no steam influence in the main steam pipeline of position, convenient the maintenance.

In order to achieve the above object, the utility model discloses a pair of plugging device that steam turbine pipeline overhauld and use, a serial communication port, include:

the auxiliary steam pipeline is arranged on one side of the main steam pipeline and used for receiving steam in the main steam pipeline, a plurality of groups of flow discharging ports communicated with the auxiliary steam pipeline are formed in the surface of the main steam pipeline, and plugging pieces capable of elastically deforming are arranged in the flow discharging ports and are plugged in the main steam pipeline when the plugging pieces expand and deform and plugged in the flow discharging ports when the plugging pieces shrink and deform;

the shutoff piece shutoff in unload the mouth one side be equipped with unload the mouth between the sealed vertical binding face of activity laminating, the shutoff piece bisymmetry setting in the mouth of multiunit unloading, and the interval is provided with the baffle of generating the water droplet after the condensation in avoiding main steam pipe way steam entering auxiliary steam pipe way and gathering between adjacent shutoff piece between the upper end of adjacent shutoff piece, the end fixing of baffle is in the one side that the shutoff piece is close to vertical binding face.

According to the further optimization of the scheme, a rubber ring which is in sealing fit with the plugging piece is fixed in the inner wall of the flow discharging port, a magnetic sheet is fixedly embedded in the rubber ring, the plugging piece is a corrugated sealing body, and a plurality of groups of magnetic strips which can be adsorbed and fixed on the magnetic sheet are arranged in the inner wall of the plugging piece.

As a further optimization of the above scheme, the fixed locating plate that leaves gapped locating plate with supplementary steam conduit top that is equipped with in the upper end of shutoff piece, the fixed locating lever that stretches into the inside bottom of shutoff piece that is equipped with on the locating plate, and the upper end of locating lever fixes the top at supplementary steam conduit, be equipped with gliding guide cylinder on the locating lever when shutoff piece inflation deformation in the shutoff piece, and the bottom of guide cylinder is fixed in on the fixed connecting piece of shutoff piece bottom inner wall, one side of guide cylinder is equipped with the spout that runs through its bottom, the bottom of locating lever is equipped with the stopper of slidable setting in the spout.

As a further optimization of the above scheme, the surface of the auxiliary steam pipeline is provided with an air control part for inflating or deflating the plugging piece and having an upper end with an opening, a bottom connecting port of the air control part is connected with an air pipe communicated with the plugging piece in a threaded fit manner, a first plugging block and a second plugging block for blocking air flow are arranged inside the upper end of the air control part, the top of the second plugging block is provided with a triangular groove, the middle part of the first plugging block is provided with an air hole corresponding to the triangular groove, the top of the air hole is provided with a sealing shell capable of elastically deforming and protruding upwards, the middle position of the sealing shell is provided with an air opening capable of being movably attached and in a sealing state, the outer ring of the bottom of the second plugging block is provided with a filter screen for air flow to pass through, the bottom of the filter screen is fixed with an upward moving limiting plate, and an elastic piece capable of elastically deforming is supported between the end of the upward limiting plate and the bottom of the air control part, the outer ring of the upper end of the air pipe is fixed with a guide ring which can be attached to the inner ring of the filter screen along the length direction of the filter screen.

As a further optimization of the above scheme, the outer ring of the filter screen is provided with a plurality of groups of filter units for filtering out foreign particles in the air flow when the air supply flows through the filter screen, and an elastic body for supporting the protrusions of the filter units is arranged between the filter units and the filter screen.

As a further optimization of the above scheme, the bottom of the main steam pipeline is provided with a plurality of groups of maintenance ports corresponding to the space between every two plugging pieces, a sealing cover is sealed in each maintenance port, one end of each sealing cover is movably hinged to the bottom of the main steam pipeline through a movable connecting piece, and a plurality of groups of pins capable of clamping the plugging pieces on the main steam pipeline are arranged at the outer edge of each sealing cover.

As a further optimization of the above scheme, the pin is rotatably arranged on the inner surface and the outer surface of the sealing cover in a penetrating manner, the pin is in an L shape, the sealing sleeve is fixedly arranged on the outer portion of the pin, a circular ring for pulling and holding the pin to rotate in the sealing cover is fixed at one end of the pin, which is located outside the main steam pipeline, the end of the pin, which is located inside the main steam pipeline, is limited on the inner wall of the main steam pipeline at the opening of the maintenance opening, and a spring for pulling and holding the pin is arranged on the inner surface of the sealing cover.

As a further optimization of the above scheme, the movable connecting piece comprises four groups of rod bodies which are hinged at the head and form an M shape, one end of the movable connecting piece is movably hinged at one end of the sealing cover, and the other end of the movable connecting piece is movably hinged on a hinge seat on the surface of the main steam pipeline.

As a further optimization of the above scheme, the distance between the end of the air pipe and the second plugging block is greater than the deformable height of the elastic sheet, the width of the triangular groove is greater than the diameter of the air hole, and a gap for the air flow to pass through is reserved between the filter screen and the inner wall of the air control piece.

The utility model discloses a plugging device that steam turbine pipeline overhauld and use possesses following beneficial effect:

1. the utility model discloses a plugging device that steam turbine pipeline overhauls and uses, set up the auxiliary steam pipeline that is arranged in receiving steam in the main steam pipeline of main steam pipeline one side, the surface of main steam pipeline is equipped with the unloading mouth that multiunit intercommunication auxiliary steam pipeline was said, but be equipped with elastic deformation's shutoff piece in the unloading mouth, the shutoff piece expands when warping in main steam pipeline, can cut off main steam pipeline, does not have the steam influence in the main steam pipeline of cut off position, convenient maintenance, and the steam in the main steam pipeline on both sides of cut off position can let in auxiliary steam pipeline and circulate, and steam can not stop the supply, the shutoff is in the unloading mouth when the shutoff piece contracts and warp, when the unloading mouth blocks, main steam pipeline can normally carry steam;

2. the utility model discloses a plugging device that steam turbine pipeline overhauld and use, one side of shutoff piece shutoff in unloading the mouth be equipped with unload the sealed vertical binding face of activity laminating between the mouth, the shutoff piece bisymmetry setting in the mouth is unloaded to the multiunit, and the interval is provided with the baffle of gathering between adjacent shutoff piece between the condensation in avoiding main steam conduit after steam gets into auxiliary steam conduit in the interval between the adjacent shutoff piece upper end, the end fixing of baffle is close to one side of vertical binding face at the shutoff piece, and the setting up of baffle makes also can flow into auxiliary steam conduit bottom and then follow the mouth of unloading and discharge main steam conduit after the steam that gets into auxiliary steam conduit condenses into water, can not remain water in the auxiliary steam conduit, guarantees auxiliary steam conduit's life.

There have been disclosed in detail certain embodiments of the invention with reference to the following description and drawings, and it is to be understood that the embodiments of the invention are not limited thereby, but are capable of numerous changes, modifications and equivalents within the spirit and terms of the appended claims.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the plugging member of the present invention;

FIG. 3 is a schematic view of the pneumatic control part of the present invention;

fig. 4 is an enlarged schematic view of the structure at a in fig. 1 according to the present invention;

fig. 5 is an enlarged schematic view of the structure at B in fig. 1 according to the present invention;

fig. 6 is an enlarged schematic view of the structure at C in fig. 1 according to the present invention;

fig. 7 is an enlarged schematic view of the structure at D in fig. 4 according to the present invention;

fig. 8 is an enlarged schematic view of the structure at E in fig. 4 according to the present invention;

fig. 9 is an enlarged schematic view of the structure at F in fig. 5 according to the present invention.

In the figure: the device comprises a main steam pipeline 1, an auxiliary steam pipeline 2, a plugging piece 3, a flow discharging port 4, a partition plate 5, a maintenance port 6, a sealing cover 7, a positioning plate 8, a positioning rod 9, a guide cylinder 10, a limiting block 11, an air control piece 12, a filter screen 13, a guide ring 14, an elastic sheet 15, a connecting port 16, an upward moving limiting plate 17, an elastic body 18, a filtering unit 19, a second plugging block 20, a triangular groove 21, a first plugging block 22, an air hole 23, a sealing shell 24, an air opening 25, an air pipe 26, a sliding groove 27, a magnetic strip 28, a connecting sheet 29, a magnetic sheet 30, a rubber ring 31, a vertical attaching surface 32, a pin 33, a movable connecting piece 34, a spring 35, a sealing sleeve 36, a circular ring 37 and a hinge seat 38.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail by the embodiments and the accompanying drawings. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.

It should be noted that when an element is referred to as being "disposed on," or provided with "another element, it can be directly on the other element or intervening elements may also be present, when an element is referred to as being" connected, "or coupled to another element, it can be directly on the other element or intervening elements may be present, and" fixedly coupled "means that the element is fixedly coupled in many ways, which are not intended to be within the scope of the present disclosure, the terms" vertical, "" horizontal, "" left, "" right, "and the like are used herein for illustrative purposes only and are not intended to be a single embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification are for the purpose of describing particular embodiments only and are not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items;

referring to the attached drawings 1-9 of the specification, the utility model provides a technical scheme: a plugging device for overhauling a steam turbine pipeline comprises:

the auxiliary steam pipeline 2 is arranged on one side of the main steam pipeline 1 and used for receiving steam in the main steam pipeline 1, a plurality of groups of flow discharging ports 4 communicated with the auxiliary steam pipeline 2 are formed in the surface of the main steam pipeline 1, the flow discharging ports 4 are internally provided with elastically deformable plugging pieces 3, the plugging pieces 3 are plugged in the main steam pipeline 1 when being expanded and deformed, and the plugging pieces 3 are plugged in the flow discharging ports 4 when being contracted and deformed;

one side of shutoff piece 3 shutoff in unloading mouth 4 is equipped with and unloads the mouth 4 between the sealed vertical binding face 32 of activity laminating, the shutoff piece 3 bisymmetry setting in the multiunit unloading mouth 4, and the interval is provided with between the 3 upper ends of adjacent shutoff piece and avoids steam to get into in the main steam pipeline 1 and produce the baffle 5 that the water droplet gathers between adjacent shutoff piece 3 after condensing in the auxiliary steam pipeline 2, the end fixing of baffle 5 is in the one side that shutoff piece 3 is close to vertical binding face 32.

In this embodiment, a rubber ring 31 hermetically attached to the sealing member 3 is fixed in the inner wall of the flow discharging port 4, a magnetic sheet 30 is fixedly embedded in the rubber ring 31, the sealing member 3 is a corrugated sealing body, and a plurality of groups of magnetic strips 28 capable of being adsorbed and fixed on the magnetic sheet 30 are arranged in the inner wall of the sealing member 3.

The plugging piece 3 can use elastic closing bodies such as air bags, the inside of the plugging piece 3 can be inflated or deflated, and the plugging piece 3 is adsorbed and fixed on a magnetic sheet 30 inside a rubber ring 31 through a magnetic strip 28 on the inner wall of the plugging piece 3, so that the plugging piece 3 is conveniently sealed in the flow discharging port 4.

And the plugging piece 3 is corrugated, when the plugging piece 3 expands and deforms, the plugging piece is plugged in the main steam pipeline 1, when the plugging piece 3 expands and deforms, the width of the plugging piece 3 correspondingly decreases, a corresponding gap for steam to flow in the main steam pipeline 1 and the auxiliary steam pipeline 2 is reserved between the plugging piece 3 and the flow discharge port 4, when the plugging piece 3 contracts and deforms, the plugging piece is plugged in the flow discharge port 4, when the plugging piece 3 contracts and deforms, the width of the plugging piece 3 correspondingly increases, and the plugging piece can be completely plugged in the flow discharge port 4.

It should be noted that, the upper end of the plugging piece 3 is fixedly provided with a positioning plate 8 which is arranged above the auxiliary steam pipeline 2 to keep a gap, the positioning plate 8 is fixedly provided with a positioning rod 9 which extends into the inner bottom end of the plugging piece 3, the upper end of the positioning rod 9 is fixed at the top of the auxiliary steam pipeline 2, the plugging piece 3 is provided with a guide cylinder 10 which slides on the positioning rod 9 when the plugging piece 3 expands and deforms, the bottom of the guide cylinder 10 is fixed on a connecting piece 29 which is fixed on the inner wall of the bottom end of the plugging piece 3, one side of the guide cylinder 10 is provided with a sliding groove 27 which runs through the bottom of the guide cylinder, and the bottom of the positioning rod 9 is provided with a limiting block 11 which can be slidably arranged in the sliding groove 27.

When the plugging piece 3 expands and deforms, the guide cylinder 10 slides on the positioning rod 9, the plugging piece 3 can be guided to deform in the vertical direction to be plugged in the main steam pipeline 1 well, the end part of the positioning rod 9 is provided with a limiting block 11 which is arranged on a sliding groove 27 on the side face of the guide cylinder 10 in a sliding mode, and the guide cylinder 10 is prevented from falling off from the positioning rod 9.

In this embodiment, an air control member 12 for inflating or deflating the plugging member 3 and having an open upper end is disposed on the surface of the auxiliary steam pipeline 2, an air pipe 26 communicated with the plugging member 3 is connected to a bottom end connector 16 of the air control member 12 in a screw-thread fit manner, a first plugging block 22 and a second plugging block 20 for blocking the air flow are disposed inside the upper end of the air control member 12, a triangular groove 21 is disposed on the top of the second plugging block 20, an air hole 23 corresponding to the triangular groove 21 is disposed in the middle of the first plugging block 22, a sealing shell 24 capable of elastically deforming and protruding upwards is disposed on the top of the air hole 23, an air opening 25 movably attached and sealed is disposed in the middle of the sealing shell 24, a filter screen 13 capable of passing the air flow is disposed on the outer ring of the bottom of the second plugging block 20, an upward movement limiting plate 17 is fixed on the bottom of the filter screen 13, an elastic sheet 15 capable of elastically deforming is supported between the end of the upward limiting plate 17 and the bottom of the air control member 12, the outer ring of the upper end of the air pipe 26 is fixed with a guide ring 14 which can be attached to the inner ring of the filter screen 13 along the length direction of the filter screen 13.

In order to avoid entering impurity and water in the shutoff piece 3, set up first shutoff piece 22 and second shutoff piece 20 on the pneumatic control part 12 of aerifing or deflating for shutoff piece 3, but first shutoff piece 22 upper end is through elastic deformation and bellied sealed shell 24 waterproof dustproof, and sealed shell 24 can use material preparation that elastic deformation such as rubber material etc. can.

When an inflation head of an inflator or other inflation equipment is plugged into the air hole 23, the inflation head abuts against the sealing shell 24 and is recessed towards the inside of the air hole 23, then an air opening 25 in the middle of the sealing shell 24 is opened, the inflation head continuously abuts against the triangular groove 21 of the second blocking block 20, so that the second blocking block 20 and the first blocking block 22 are relatively opened, the inflation head vertically abuts against the triangular groove 21 with the inclined bottom surface, a gap for air supply to enter is formed between the end part of the inflation head and the triangular groove 21, at the moment, air sequentially passes through the inflation head, the triangular groove 21, the gap between the second blocking block 20 and the first blocking block 22, the gap between the second blocking block 20 and the air control part 12, the filter screen 13 and the air pipe 26 and enters the blocking piece 3, the blocking piece 3 is expanded and deformed, and the used inflation head is matched and clamped with the air hole 23.

And gaseous impurity particle in can being filtered gas when passing through filter screen 3 outside filter unit 19, avoid impurity particle to lead to the wearing and tearing of 3 inner walls of shutoff piece in getting into shutoff piece 3, and filter unit 19 also has the effect of moisture in the filtered gas, avoids ponding and influence the use in shutoff piece 3.

Wherein, the filtering unit 19 can use an active carbon filtering layer and a cotton filtering layer, etc., and can be used according to actual requirements.

When using the round bar that the diameter is less than the gas pocket 23 diameter to contradict second shutoff piece 20 and move down, there is the gap between round bar and the gas pocket 23, this moment, the inside air and the outside air intercommunication of shutoff piece 3, because the inside air atmospheric pressure of shutoff piece 3 is big, the air in shutoff piece 3 can loop through trachea 26, filter screen 13, the clearance between second shutoff piece 20 and the air control part 12 clearance second shutoff piece 20 and the first shutoff piece 22 between, triangular groove 21 and gas pocket 23 flow. The plugging member 3 is shrunk and deformed to be sealed in the discharge port 4.

Furthermore, the outer ring of the filter screen 13 is provided with a plurality of groups of convex filtering units 19 for filtering impurity particles in the air flow when the air is supplied to and flows through the filter screen 13, and an elastic body 18 for supporting the convex filtering units 19 is arranged between the filtering units 19 and the filter screen 13.

The elastic body 18 keeps the filter unit 19 in a saturated state, so that the air can smoothly pass through the filter unit 19 and the filter screen 13 at a high speed, and the phenomenon that the filter unit 19 is directly blown to be clamped in filter holes of the filter screen 13 is avoided.

In this embodiment, the bottom of the main steam pipeline 1 is provided with a plurality of groups of maintenance ports 6 corresponding to the space between every two sealing parts 3, the maintenance ports 6 are internally sealed with sealing covers 7, one ends of the sealing covers 7 are movably hinged to the bottom of the main steam pipeline 1 through movable connecting parts 34, and the outer edges of the sealing covers 7 are provided with a plurality of groups of pins 33 capable of clamping the sealing parts 3 on the main steam pipeline 1.

When the cover 7 is opened, the main steam pipeline 1 at the section can be maintained and maintained.

It should be noted that the pin 33 is rotatably inserted through the inner and outer surfaces of the sealing cover 7, the pin 33 is L-shaped, the sealing sleeve 36 is fixedly sleeved on the outside, the ring 37 for pulling and holding the pin 33 to rotate in the sealing cover 7 is fixed at the end of the pin 33 located outside the main steam pipe 1, the end of the pin 33 located inside the main steam pipe 1 is limited on the inner wall of the main steam pipe 1 at the opening of the maintenance opening 6, and the spring 35 for pulling and holding the pin 33 is arranged on the inner surface of the sealing cover 7.

The sealing sleeve 36 outside the pin 33 increases the sealing performance between the pin 33 and the sealing cover 7, and ensures that the pin 33 can rotate on the sealing cover 7, while the inner end of the pin 33 is pulled and held by the spring 35, the pin 33 can stably clamp the sealing cover 7 at the maintenance opening 6, and only when the pin 33 is rotated to the area of the sealing cover 7, the sealing cover 7 loses the interference effect of the pin 33 on the inner wall of the main steam pipeline 1, and the sealing cover 7 can be smoothly taken out.

Further, the movable connecting piece 34 comprises four groups of rod bodies which are hinged at the head and form an M shape, one end of the movable connecting piece 34 is movably hinged at one end of the sealing cover 7, and the other end of the movable connecting piece 34 is movably hinged on a hinge seat 38 on the surface of the main steam pipeline 1.

The movable connecting piece 34 can be taken out from the maintenance opening 6 in a mode of vertically taking out after the sealing cover 7 moves up and down in a certain distance, and then the sealing cover 7 is rotated and opened by taking the hinged position of the movable connecting piece 34 and the hinged seat 38 as an axis, so that the use is convenient, and the clamping and sealing cannot be difficult. The cover 7 is opened and sealed along the length direction of the maintenance opening 6, so that good sealing performance is guaranteed, and abrasion is small.

Specifically, the distance between the end of the air tube 26 and the second blocking block 20 is greater than the height of the elastic piece 15, which is deformable, so that a gap for the air to pass through is formed between the air tube 26 and the second blocking block 20 when the air tube abuts against the second blocking block 20 to be compressed. And the width of the triangular groove 21 is larger than the diameter of the air hole 23, and a gap for air flow to pass through is reserved between the filter screen 13 and the inner wall of the air control part 12, so that the air flow can normally pass through the filter screen 13 and the triangular groove 21.

The embodiment provides a plugging device that steam turbine pipeline overhauld and use, the course of work is as follows:

when the main steam pipeline 1 at a fixed position is overhauled, the plugging pieces 3 with two groups of plugging pieces 3 at intervals are alternately inflated, when the inflation head is plugged into the air hole 23, the inflation head props against the sealing shell 24 and is sunken towards the inside of the air hole 23, further the air opening 25 in the middle of the sealing shell 24 is opened, the inflation head continuously props against the triangular groove 21 of the second plugging piece 20, so that the second plugging piece 20 and the first plugging piece 22 are relatively opened, the inflation head vertically props against the triangular groove 21 with an inclined bottom surface, a gap for air to enter is formed between the end part of the inflation head and the triangular groove 21, at the moment, air sequentially passes through the inflation head, the triangular groove 21, the gap between the second plugging piece 20 and the first plugging piece 22, the gap between the second plugging piece 20 and the air control piece 12, the filter screen 13 and the air pipe 26 and enters the plugging pieces 3, so that the plugging pieces 3 are expanded and deformed, guide cylinder 10 slides on locating lever 9, can lead shutoff piece 3 and be vertical direction deformation, with the shutoff in main steam conduit 1, at this moment, its width correspondingly diminishes when shutoff piece 3 inflation warp, corresponding confession steam can be left between shutoff piece 3 and the mouth 4 that unloads the clearance of circulation in main steam conduit 1 and auxiliary steam conduit 2, main steam conduit 1 at shutoff part's main steam conduit 1 both ends passes through the clearance between shutoff piece 3 and the mouth 4 that unloads and auxiliary steam conduit intercommunication 2, steam can not continue the supply through the main steam conduit 1 of shutoff position temporarily.

It should be understood, however, that the intention is not to limit the invention to the particular embodiments described, but to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims

1. The utility model provides a plugging device that steam turbine pipeline overhauld and use which characterized in that includes:

2. The plugging device for overhauling a steam turbine pipeline according to claim 1, wherein: the inner wall of the flow discharging port is fixedly provided with a rubber ring which is hermetically attached to the plugging piece, the rubber ring is fixedly embedded with a magnetic sheet, the plugging piece is a corrugated sealing body, and a plurality of groups of magnetic strips which can be adsorbed and fixed on the magnetic sheet are arranged in the inner wall of the plugging piece.

3. The plugging device for overhauling a turbine pipeline according to claim 2, wherein: the fixed locating plate that leaves gapped locating plate with supplementary steam conduit top that is equipped with in the upper end of shutoff piece, the fixed locating lever that stretches into the inside bottom of shutoff piece that is equipped with on the locating plate, and the upper end of locating lever fixes the top at supplementary steam conduit, be equipped with gliding guide cylinder on the locating lever when shutoff piece expansion deformation in the shutoff piece, and the bottom of guide cylinder is fixed in on the fixed connecting piece of shutoff piece bottom inner wall, one side of guide cylinder is equipped with the spout that runs through its bottom, the bottom of locating lever is equipped with the stopper that can slide the setting in the spout.

4. The plugging device for repairing and using a turbine pipeline according to claim 3, wherein: the surface of the auxiliary steam pipeline is provided with an air control part which is used for inflating or deflating the plugging piece and has an opening at the upper end, the connecting port at the bottom end of the air control piece is connected with an air pipe communicated in the plugging piece in a threaded fit manner, a first blocking block and a second blocking block which block the air flow are arranged in the upper end of the air control piece, the top of the second plugging block is provided with a triangular groove, the middle part of the first plugging block is provided with an air hole corresponding to the triangular groove, the top of the air hole is provided with an elastically deformable sealing shell which is convex upwards, the middle position of the sealing shell is provided with an air opening which is movably attached and is in a sealing state, the outer ring at the bottom of the second plugging block is provided with a filter screen through which air flow can pass, an upward movement limiting plate is fixed at the bottom of the filter screen, an elastic sheet which can elastically deform is supported between the end part of the upward movement limiting plate and the bottom of the air control piece, the outer ring of the upper end of the air pipe is fixed with a guide ring which can be attached to the inner ring of the filter screen along the length direction of the filter screen.

5. The plugging device for repairing and using the turbine pipeline according to claim 4, wherein: the outer lane of filter screen is equipped with the filter unit of impurity granule in the filtering air current when the protruding air feed circulation filter screen of multiunit, and is equipped with between filter unit and the filter screen and supplies to support the bellied elastomer of filter unit.

6. The plugging device for repairing and using a turbine pipeline according to claim 5, wherein: the bottom of main steam pipeline is equipped with the maintenance mouth that the multiunit corresponds between two liang of shutoff pieces, and sealed in the maintenance mouth has the closing cap, the one end of closing cap passes through the swing joint spare activity and articulates in the bottom of main steam pipeline, and the outer fringe department of closing cap is equipped with the multiunit and can be with the pin of shutoff piece block on main steam pipeline.

7. The plugging device for overhauling a turbine pipeline according to claim 6, wherein: the pin is rotatable runs through in the interior external surface of closing cap, and the pin is L font and outside fixed cover is equipped with the seal cover, and the pin is located the outside one end of main steam pipe and is fixed with and supplies to draw and hold the round ring of pin pivoted in the closing cap, and the pin is located the inside one end of main steam pipe and restricts on the main steam pipe inner wall of maintenance mouth opening part, the inner face of closing cap is equipped with and supplies to draw the spring of holding the pin.

8. The plugging device for repairing and using a turbine pipeline according to claim 7, wherein: the movable connecting piece comprises four groups of rod bodies which are hinged at the head and form an M shape, one end of the movable connecting piece is movably hinged at one end of the sealing cover, and the other end of the movable connecting piece is movably hinged on the hinge seat on the surface of the main steam pipeline.

9. The plugging device for repairing and using a turbine pipeline according to claim 8, wherein: the distance between tracheal tip and the second shutoff piece is greater than the deformable height of elastic sheet, and the width of triangular groove is greater than the diameter of gas pocket, leave the clearance that supplies the air current to pass through between filter screen and the gas accuse spare inner wall.