CN111940382A - Cleaning mechanism for turbine blade scaling and cleaning method based on mechanism - Google Patents
Cleaning mechanism for turbine blade scaling and cleaning method based on mechanism Download PDFInfo
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- CN111940382A CN111940382A CN202010790284.4A CN202010790284A CN111940382A CN 111940382 A CN111940382 A CN 111940382A CN 202010790284 A CN202010790284 A CN 202010790284A CN 111940382 A CN111940382 A CN 111940382A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/022—Cleaning travelling work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids
Abstract
The invention discloses a cleaning mechanism for scale formation of turbine blades and a cleaning method based on the mechanism, the cleaning mechanism comprises a shell coated outside a plurality of groups of turbine blades, the turbine blades can be driven to rotate by the impact force of water when the turbine blades are washed by water, the operation of a turbine is not required to be stopped, the water can be washed between the adjacent turbine blades in a spiral track through a guide plate in the shell, the cleaning mechanism also comprises a circulating box which receives the water discharged from a water outlet pipe and continuously discharges the received water into the shell from a water inlet pipe, a filtering mechanism which forms a one-way circulating channel and enables the water in the circulating box to flow in a one-way so as to filter impurities in the water is arranged in the circulating box, the water for washing the blades can be discharged into the circulating box, filtered by the filtering mechanism and then discharged into the shell again for cleaning the turbine blades, and the water in the filtering mechanism is filtered by multiple cycles, the water for washing the turbine blade does not contain impurities, and the cleaning effect is good.
Description
Technical Field
The invention relates to the technical field of steam turbines, in particular to a mechanism for cleaning scale on a steam turbine blade and a cleaning method based on the mechanism.
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, when blades of a steam turbine receive steam, impurities such as water scales and the like are generated, the blades are difficult to clean, the blades of the steam turbine applied to industry are large and are inconvenient to take out for cleaning, and the steam turbine is used as a power source, so that the shutdown cleaning cost is high; therefore, the cleaning mechanism for the scale of the turbine blade and the cleaning method based on the mechanism solve the problems.
Disclosure of Invention
The invention provides a cleaning mechanism for scale formation of turbine blades and a cleaning method based on the mechanism, aiming at the problems in the prior art, the cleaning mechanism comprises a shell which is coated outside a plurality of groups of turbine blades, the turbine blades can be driven to keep rotating by the impact force of water when the turbine blades are washed by introducing water, the operation of a turbine does not need to be stopped, the water can be washed between the adjacent turbine blades in a spiral track through a guide plate in the shell, and the cleaning effect is better.
In order to achieve the above object, the present invention provides a cleaning mechanism for turbine blade fouling, comprising:
the steam turbine blade water circulation device comprises a shell, a plurality of groups of steam turbine blades and a water inlet pipe, wherein the shell is coated outside the plurality of groups of steam turbine blades, a steam inlet pipe which inputs steam into the shell and pushes the steam turbine blades to rotate through the steam entering the shell is arranged above one end of the shell, a water inlet pipe which inputs water into the shell and pushes the steam turbine blades to rotate through the water entering the shell is arranged below one end of the shell, a steam outlet pipe which is used for outputting the steam in the shell is arranged above the other end of the shell, a water outlet pipe which is used for outputting the water in the shell is arranged below the other end of the shell, and a guide plate which guides the water;
and the circulating box is used for receiving the water discharged from the water outlet pipe and continuously discharging the received water into the shell from the water inlet pipe, and a filtering mechanism which forms a one-way circulating channel and enables the water in the circulating box to circulate in a one-way manner so as to filter impurities in the water is arranged in the circulating box.
As a further optimization of the scheme, the middle part of the shell is provided with a rotating shaft which transversely and movably penetrates through two ends of the shell, and a plurality of groups of turbine blades are fixed on the rotating shaft.
As a further optimization of the above scheme, all be equipped with the ooff valve in steam inlet pipe, steam outlet pipe, inlet tube and the outlet pipe, one side of casing is equipped with the circulation unit, and one side of circulation unit is equipped with the water suction with the casing outside and with the second water pipe of water from the inlet tube drainage casing, the opposite side of circulation unit is equipped with the first water pipe of receiving the circulation case in the play water, the one end of circulation case is equipped with the circulation outlet pipe of inputing the circulation case water into first water pipe, be equipped with the one-way water valve that makes water one-way flow to first water pipe by circulation outlet pipe in the first water pipe, the other end of circulation case is equipped with the circulation inlet tube of receiving the water drainage casing in the circulation case, communicate through dismantled and assembled hose between outlet pipe and the circulation inlet tube.
As a further optimization of the above solution, the guide plate is fixed along the inner wall of the housing in a spiral shape.
As a further optimization of the scheme, the circulation box is fixed at the bottom of the shell and comprises a heat conduction plate and a rectangular shell, wherein the heat conduction plate can transfer the heat of water in the circulation box to the inside of the shell, the rectangular shell can prevent the heat of water in the circulation box from losing and is arranged on one side of the heat conduction plate.
As a further optimization of the above scheme, the filtering mechanism comprises a first filtering box for receiving the water in the circulating water inlet pipe and outputting the water to the circulating water outlet pipe in a single direction, an L-shaped filtering plate for filtering the water received in the first filtering box is arranged on one side of the first filtering box, the filtering mechanism further comprises a second filtering box for collecting impurities separated from part of the water and the filtered water in the first filtering box, and a connecting pipe for discharging the water collected in the second filtering box into one side of the first filtering box close to the circulating water inlet pipe in a single direction and filtering the water again through the L-shaped filtering plate on the first filtering box is arranged on one side of the second filtering box.
As a further optimization of the above scheme, the side of the first filter box is provided with filter water holes for water in the circulation tank to pass through, two groups of semi-ring plates which are elastically deformable and distributed up and down are arranged at openings of the filter water holes, the openings of the two groups of semi-ring plates are arranged oppositely, the semi-ring plates are fixed in a filter cavity formed between the first filter box and the rotating shaft, water guide blocks which are mutually attached are arranged on end parts of the two groups of semi-ring plates, and water guide surfaces which guide water between the first filter box and the L-shaped filter plate to flow to the upper side and the lower side of the first filter box when the water flows back to one side of the filter water holes are arranged on one side of the water.
As a further optimization of the scheme, the first filter box and the second filter box are respectively fixed inside and outside the circulating box, a second water pipe communicated with the first filter box and the second filter box is arranged between the bottom of the first filter box and the top of the second filter box, a filter plate which is arranged on one side of the second water pipe and can filter water entering the second filter box is arranged inside the second filter box, one side of the filter plate blocks the inside of the second filter box into a second cavity communicated with the second water pipe, the other side of the filter plate blocks the inside of the second filter box into a first cavity communicated with the connecting pipe, an opening communicated with the second cavity is arranged on one side of the bottom of the second filter box, a sealing plug is connected with the opening in a threaded fit manner, a third water pipe communicated between the first cavity and the connecting pipe is arranged on the other side of the bottom of the circulating box, which is positioned on one side of the first filter box close to the water filtering hole, and is provided with a first water pipe communicated between the inside of the circulating box and, the first water pipe is provided with a one-way valve which discharges the water in the connecting pipe into the circulating tank in one way.
The invention also discloses a cleaning method, which comprises the cleaning mechanism for the scale formation of the turbine blade, and further comprises the following steps:
s1: water flow is introduced, when the turbine blades rotate to work, the switch valves in the water inlet pipe and the water outlet pipe can be opened, the water flow is introduced from the position of the second water pipe through the circulating unit and is introduced into the shell through the water inlet pipe, then the switch valves in the steam inlet pipe and the steam outlet pipe are closed, the supply of water vapor is temporarily stopped, so that the water flow in the cleaning process is prevented from entering the steam inlet pipe and the steam outlet pipe, the water flow entering the shell is washed to the inner wall of the shell and is spirally washed among the plurality of groups of turbine blades along the track of the guide plate under the blocking action of the guide plate, and water flowing at high speed can completely wash away impurities such as water scales among the turbine;
s2: leading out water flow, leading out water after washing the turbine blade from the position of a water outlet pipe and entering a circulating box, leading the water to pass through the circulating box and enter between a first filter box and an L-shaped filter plate through a filter water hole, leading the entered water to extrude two groups of semi-ring plates which are attached and kept sealed outwards so as to open the space between the two groups of semi-ring plates and lead the water to smoothly pass through the space between the first filter box and the L-shaped filter plate for primary filtration, leading one part of the water which enters between the first filter box and the L-shaped filter plate to pass through the L-shaped filter plate and filter impurities such as incrustation scale and the like contained in the water into the left end of the circulating box, leading the other part of the water to be extruded from the position of a second water pipe due to the water pressure generated by the flowing water to enter into a second filter box, and leading the impurities such as incrustation scale and the like to be filtered, the water entering the second filter box is pushed to be discharged into the circulating box on the right side of the first filter box from the third water pipe, the connecting pipe and the first water pipe in sequence due to the pressure generated by the water continuously entering the second filter box, and then continuously enters the first filter box along with the water continuously entering the circulating box to fulfill the aim of multiple-time circulating filtration;
s3: water flow is introduced again, water after being filtered for multiple times in the circulating tank is introduced into the shell again through the circulating water outlet pipe, the first water pipe, the circulating unit and the water inlet pipe in sequence, at the moment, water source supply of the second water pipe can be stopped, and the purpose of circularly washing the turbine blades in the shell is achieved through a fixed amount of water;
s4: the water flow is discharged after cleaning, the hose connected to the circulating water inlet pipe can be detached, the circulating unit is continuously started, redundant water in the circulating box and the shell is discharged from the end part of the hose, the phenomenon of water accumulation in the shell cannot be caused, the switch valves in the steam inlet pipe and the steam outlet pipe are opened when the water flow is discharged, and water vapor is introduced into the shell, so that the situation that the water vapor can be continuously connected to provide rotating power for the blades of the steam turbine when the water is about to be discharged or is discharged is ensured, the phenomenon that the equipment stops running cannot be caused, and when the water in the shell and the circulating box is completely discharged, the switch valves in the water inlet pipe and the water outlet pipe are closed, and the water vapor in the shell is prevented from entering;
s5: and discharging scale after cleaning, opening the sealing plug, and sealing the sealing plug after discharging impurities such as the scale collected in the second cavity.
The invention discloses a cleaning mechanism for scale formation of a turbine blade and a cleaning method based on the mechanism, which have the following beneficial effects:
1. the invention relates to a cleaning mechanism for scale formation of turbine blades and a cleaning method based on the mechanism, which comprises a shell covering the outer parts of a plurality of groups of turbine blades, wherein a steam inlet pipe for inputting steam into the shell and pushing the turbine blades to rotate through the steam entering the shell is arranged above one end of the shell, a water inlet pipe for inputting water into the shell and pushing the turbine blades to rotate through the water entering the shell is arranged below one end of the shell, a steam outlet pipe for outputting the steam in the shell is arranged above the other end of the shell, a water outlet pipe for outputting the water in the shell is arranged below the other end of the shell, a guide plate for guiding the water entering the water inlet pipe to wash among the plurality of groups of turbine blades in a spiral track is arranged on the inner wall of the shell, and the turbine blades can be driven to rotate by the impact force of the water when the, the operation of the steam turbine is not required to be stopped, and water can be flushed between adjacent steam turbine blades in a spiral track through a guide plate in the shell, so that the cleaning effect is good;
2. the invention relates to a cleaning mechanism for scale formation of a turbine blade and a cleaning method based on the mechanism, and further comprises a circulating box which receives water discharged from a water outlet pipe and discharges the received water into a shell continuously from a water inlet pipe, wherein a filtering mechanism which forms a one-way circulating channel and enables the water in the circulating box to flow in a one-way mode to filter impurities in the water is arranged in the circulating box, the water for washing the blade can be discharged into the circulating box, filtered by the filtering mechanism and then discharged into the shell again for cleaning the turbine blade, the water can be recycled, energy is saved, the water in the filtering mechanism enters the shell for washing the turbine blade after being filtered by multiple cycles, the water for washing the turbine blade does not contain impurities, and the cleaning effect is good.
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 intended to cover within the spirit and scope of the appended claims, many changes, modifications, and equivalents.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
fig. 3 is an enlarged view of the structure at B in fig. 1 according to the present invention.
In the figure: the device comprises a shell 1, a circulating box 2, a circulating water outlet pipe 3, a water inlet pipe 4, a first water pipe 5, a circulating unit 6, a second water pipe 7, a steam inlet pipe 8, a guide plate 9, a steam turbine blade 10, a steam outlet pipe 11, a water outlet pipe 12, a rotating shaft 13, a hose 14, a circulating water inlet pipe 15, a first filter box 16, a second filter box 17, a one-way valve 18, a first water pipe 19, a second water pipe 20, a connecting pipe 21, a first cavity 22, a filter plate 23, a second cavity 24, a third water pipe 25, a sealing plug 26, a filtering water hole 27, a semi-ring plate 28, a water guide block 29, a water guide surface 30 and an L-shaped filter plate 31.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples. 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 1-3 in the specification, the invention provides a technical scheme: a turbine blade fouling cleaning mechanism comprising:
the steam turbine comprises a shell 1 coated outside a plurality of groups of steam turbine blades 10, wherein a steam inlet pipe 8 for inputting steam into the shell 1 and pushing the steam turbine blades 10 to rotate through the steam entering the shell 1 is arranged above one end of the shell 1, a water inlet pipe 4 for inputting water into the shell 1 and pushing the steam turbine blades 10 to rotate through the water entering the shell 1 is arranged below one end of the shell 1, a steam outlet pipe 11 for outputting the steam in the shell 1 is arranged above the other end of the shell 1, a water outlet pipe 12 for outputting the water in the shell 1 is arranged below the other end of the shell 1, and a guide plate 9 for guiding the water entering the water inlet pipe 4 to wash the water among the plurality of groups of steam turbine blades 10 in a spiral track is arranged;
and a circulating box 2 for receiving the water discharged from the water outlet pipe 12 and continuously discharging the received water into the shell 1 from the water inlet pipe 4, wherein a filtering mechanism which forms a one-way circulating channel and enables the water in the circulating box 2 to circulate in one way to filter impurities in the water is arranged in the circulating box 2.
In this embodiment, the middle part of casing 1 is equipped with the pivot 13 that transversely moves through casing 1 both ends, and multiunit turbine blade 10 is fixed on pivot 13, and water or steam all can promote turbine blade 10 to rotate in discharging casing 1, and pivot 13 rotates when turbine blade 10 rotates for the power of steam and water is mechanical energy through the conversion of pivoted pivot 13.
It should be noted that, switch valves are respectively arranged in the steam inlet pipe 8, the steam outlet pipe 11, the water inlet pipe 4 and the water outlet pipe 12, a circulation unit 6 is arranged at one side of the housing 1, a second water pipe 7 for sucking water outside the housing 1 and discharging the water from the water inlet pipe 4 into the housing 1 is arranged at one side of the circulation unit 6, a first water pipe 5 for receiving the water discharged from the circulation tank 2 is arranged at the other side of the circulation unit 6, a circulation water outlet pipe 3 for inputting the water in the circulation tank 2 into the first water pipe 5 is arranged at one end of the circulation tank 2, a one-way water valve for making the water flow from the circulation water outlet pipe 3 to the first water pipe 5 in one way is arranged in the first water pipe 5, a circulation water inlet pipe 15 for receiving the water in the housing 1 into the circulation tank 2 is arranged at the other end of the circulation tank 2, and the water outlet.
The switch valve may be an electromagnetic valve, and the circulation unit 6 may be a high pressure water pump, which are well known in the art and will not be described herein.
Wherein, baffle 9 is the heliciform and sets up along the inner wall of casing 1 is fixed, and baffle 9 has the guide effect to the water that gets into casing 1 for inside water was the spiral orbit and passes through casing 1, the spiral can be abundant wash between multiunit turbine blade 10 through the inside water of casing 1.
Further, circulation case 2 fixes the bottom at casing 1, circulation case 2 is including can be with circulation case 2 in hydrothermal transmission to casing 1 inside heat-conducting plate and separation circulation case 2 in hydrothermal loss and set up in the rectangular shell of heat-conducting plate one side, circulation water in the circulation case 2 can be with in heat transmission to casing 1, heat loss has been avoided, the make full use of waste heat, higher temperature has in having guaranteed casing 1, make steam difficult by the condensation, it drives turbine blade 10 and rotates to have guaranteed that the steam that has sufficient volume in casing 1.
In this embodiment, the filtering mechanism comprises a first filter box 16 for receiving the water from the circulating water inlet pipe 15 and outputting the water to the circulating water outlet pipe 3 in a single direction, an L-shaped filter plate 31 for filtering the water received in the first filter box 16 is arranged on one side of the first filter box 16, a second filter box 17 for collecting impurities separated from the water of the water passing through the first filter box 16 and the filtered water, and a connecting pipe 21 for discharging the water collected in the second filter box 17 in a single direction to one side of the first filter box 16 close to the circulating water inlet pipe 15 and filtering the water again by the L-shaped filter plate 31 on the first filter box 16 is arranged on one side of the second filter box 17.
The L-shaped filter plate 31 and the filter plate 23 may each use a filter assembly for filtering water and impurities in the water, which is a combination of a cotton filter layer, an activated carbon filter layer, a PP cotton filter layer, and the like.
It should be noted that, the side of the first filter box 16 is provided with a filtering water hole 27 for passing water in the circulation tank 2, two sets of semi-ring plates 28 which are elastically deformable and distributed up and down are arranged at the opening of the filtering water hole 27, the openings of the two sets of semi-ring plates 28 are arranged oppositely, the semi-ring plates 28 are fixed in the filtering cavity formed between the first filter box 16 and the rotating shaft 13, the end parts of the two sets of semi-ring plates 28 are integrally provided with water guide blocks 29 which are mutually attached, and one side of the water guide blocks 29 is provided with water guide surfaces 30 which guide water between the first filter box 16 and the L-shaped filter plate 31 to flow to the upper and lower sides of the first filter box 16 when the water flows back to one side of the.
The water guide surface 30 has the phenomenon of guiding water to the upper inner wall and the lower inner wall of the first filter box 16 when the water entering between the first filter box 16 and the L-shaped filter plate 31 has a backflow trend, the water impacting the water guide surface 30 on the two water guide blocks 29 can tightly press the two water guide blocks 29, the two water guide blocks 29 are sealed, the water cannot flow back, the one-way circulation of the water entering the circulation box 2 is ensured, and when the water entering between the first filter box 16 and the L-shaped filter plate 31 through the water filtering holes 27 impacts the semi-annular plate 28, the two semi-annular plates 28 are far away from each other and elastically deform, so that the water can enter between the first filter box 16 and the L-shaped filter plate 31.
Further, a first filter box 16 and a second filter box 17 are respectively fixed inside and outside the circulation box 2, a second water pipe 20 communicating the first filter box 16 and the second filter box 17 is arranged between the bottom of the first filter box 16 and the top of the second filter box 17, a filter plate 23 which is arranged on one side of the second water pipe 20 and can filter water entering the second filter box 17 is arranged inside the second filter box 17, one side of the filter plate 23 blocks the inside of the second filter box 17 into a second cavity 24 communicated with the second water pipe 20, the other side of the filter plate 23 blocks the inside of the second filter box 17 into a first cavity 22 communicated with the connecting pipe 21, an opening communicated with the second cavity 24 is arranged on one side of the bottom of the second filter box 17, the opening is connected with a sealing plug 26 in a threaded fit manner, a third water pipe 25 communicated between the first cavity 22 and the connecting pipe 21 is arranged on the other side of the bottom of the second filter box 17, a first water pipe 25 communicated between the inside of the circulation box 2 and the connecting pipe 21 is arranged on one side of the first filter box 16 close to the through A water pipe 19, a one-way valve 18 which discharges the water in the connecting pipe 21 into the circulating tank 2 in one way is arranged in the first water pipe 19.
The check valve 18 can use a check water valve and the like, and the check valve 18 ensures that water between the first filter box 16 and the L-shaped filter plate 31 can pass through the second filter box 17 in a single direction and then enter the position of the water filtering holes 27 of the first filter box 16 again, and then circularly enters again for multiple times of filtering.
When stopping to wash, can demolish the hose 14 of connection in circulation inlet tube 15 department, continue to start circulation unit 6, discharge the tip of unnecessary water from hose 14 in circulation case 2 and the casing 1, can not form the phenomenon of the inside ponding of casing 1, and also can produce ponding when letting in steam in casing 1, regularly discharge the ponding in casing 1 through circulation unit 6, guaranteed the normal use of equipment.
After the water in the shell 1 and the circulating pipe 2 is completely discharged, the sealing plug 26 can be opened to clean and discharge impurities such as water scale and the like collected in the second cavity 24, and the cleaning and the use are convenient.
The continuous one-way second filter box 17 that passes through of water between first filter box 16 and the L-shaped filter plate 31 also can drive the continuous quilt of impurity such as incrustation scale between first filter box 16 and the L-shaped filter plate 31 and get into second chamber 24 and collect, and it is comparatively convenient to collect impurity such as clearance incrustation scale.
The invention also discloses a cleaning method, which comprises the cleaning mechanism for the scale formation of the turbine blade, and further comprises the following steps:
s1: water flow is introduced, when the turbine blades 10 rotate to work, the switch valves in the water inlet pipe 4 and the water outlet pipe 12 can be opened, the water flow is introduced from the position of the second water pipe 7 through the circulating unit 6 and is introduced into the shell 1 through the water inlet pipe 4, then the switch valves in the steam inlet pipe 8 and the steam outlet pipe 11 are closed, the supply of water vapor is temporarily stopped, so that the situation that the water flow enters the steam inlet pipe 8 and the steam outlet pipe 11 in the cleaning process is avoided, the water flow entering the shell 1 washes the inner wall of the shell 1, the water flow can wash the spaces among the groups of turbine blades 10 in a spiral mode along the track of the guide plate 9 under the blocking action of the guide plate 9, and water flowing at a high speed can completely wash away impurities such as;
s2: leading out water flow, leading out water after washing the turbine blade 10 from the position of the water outlet pipe 12 and entering the circulation box 2, leading the water into the circulation box 2 through the filtering water holes 27 and entering between the first filtering box 16 and the L-shaped filtering plate 31, leading the entered water to press two groups of half ring plates 28 which are attached and kept sealed outwards so as to open between the two groups of half ring plates 28, leading the water to smoothly enter between the first filtering box 16 and the L-shaped filtering plate 31 for primary filtering, leading one part of the water entering between the first filtering box 16 and the L-shaped filtering plate 31 to pass through the L-shaped filtering plate 31 and filter impurities such as scale contained in the water into the left end of the circulation box 2, leading the other part of the water to be pressed from the position of the second water pipe 20 due to the water pressure generated by the flowing water and enter into the second filtering box 17, leading the water passing through the water of the second filtering box 17 to collect the impurities such as scale in the second cavity 24 through the filtering plate 23 in the, the purpose of secondary filtration is completed, the water entering the second filter box 17 is pushed to be discharged into the circulation box 2 at the right side of the first filter box 16 again from the third water pipe 25, the connecting pipe 21 and the first water pipe 19 in sequence due to the pressure generated by the water continuously entering the second filter box 17, and then the water continuously entering the circulation box 2 continuously enters the first filter box 16 to complete the purpose of multiple times of circulation filtration;
s3: water flow is introduced again, water filtered for many times in the circulation box 2 is introduced into the shell 1 again through the circulation water outlet pipe 3, the first water pipe 5, the circulation unit 6 and the water inlet pipe 4 in sequence, at the moment, water source supply of the second water pipe 7 can be stopped, and the purpose of circularly washing the turbine blades 10 in the shell 1 is achieved through a fixed amount of water;
s4: discharging water flow after cleaning, removing a hose 14 connected to a circulating water inlet pipe 15, continuously starting a circulating unit 6, discharging redundant water in a circulating box 2 and a shell 1 from the end part of the hose 14, avoiding the phenomenon of water accumulation in the shell 1, opening switch valves in a steam inlet pipe 8 and a steam outlet pipe 11 when discharging water flow, introducing water vapor into the shell 1, ensuring that the water vapor can be continuously connected to provide rotating power for a turbine blade 10 when water is about to be discharged or is discharged, avoiding the phenomenon of equipment stopping running, and closing the switch valves in the water inlet pipe 4 and a water outlet pipe 12 when completely discharging water in the shell 1 and the circulating box 2, and preventing the water vapor in the shell 1 from entering;
s5: after the cleaning is finished, the scale is discharged, the sealing plug 26 is opened, impurities such as the scale collected in the second cavity 24 are discharged, and then the sealing plug 26 is sealed.
The cleaning mechanism for the scale formation of the turbine blade and the cleaning method based on the mechanism provided by the embodiment have the following working processes:
when the steam turbine is in operation, the switch valves in the steam inlet pipe 8 and the steam outlet pipe 11 are opened, the switch valves in the water inlet pipe 4 and the water outlet pipe 12 are closed, high-speed flowing steam is introduced into the shell 1 from the steam inlet pipe 8 of the shell 1, the steam drives the turbine blades 10 to rotate, so that the rotating shafts 13 in the middle of the turbine blades 10 rotate to generate power, and the steam in the shell 1 is discharged through the steam outlet pipe 11.
When the steam turbine blades 10 are cleaned, the switch valves in the steam inlet pipe 8 and the steam outlet pipe 11 are closed, the switch valves in the water inlet pipe 4 and the water outlet pipe 12 are opened, the second water pipe 7 is connected with a water source, the circulating unit 6 discharges water in the water source into the shell 1 from the water inlet pipe 4 at a high speed through the second water pipe 7, the water entering the shell 1 can push the steam turbine blades 10 to rotate, the cleaned steam turbine blades 10 provide power for equipment operation at the same time, the equipment operation does not need to be stopped, the cost is low, the water flowing at a high speed in the shell 1 is guided through the guide plate 9 to be in a spiral track to be washed among a plurality of groups of steam turbine blades 10, the impurities such as incrustation on the surfaces of the steam turbine blades 10 can be washed and removed, cleaning agents and the like which can easily cause the impurities such as incrustation on the surfaces of the steam turbine blades 10 to fall off, the cleaning effect is good, the water in the shell 1 enters the circulating box 2 for circulation through the water outlet pipe 12, at the moment, the supply of the water source is stopped, the water in the circulating box 2 firstly enters the first filter box 16 and the L-shaped filter plate 31 through the filter water holes 27, the water is filtered through the L-shaped filter plate 31 to leave impurities taken away when the turbine blade 10 is washed between the first filter box 16 and the L-shaped filter plate 31, part of the water between the L-shaped filter plate 31 and the first filter box 16 enters the second filter box 17 through the second water pipe 20 for secondary filter circulation, and the water between the L-shaped filter plate 31 and the first filter box 16 enters the second filter box 17 to bring the impurities between the L-shaped filter plate 31 and the first filter box 16 into the second cavity 24 of the second filter box 17 for collection, the water entering the second cavity 24 enters the first cavity 22 through the filter plate 23, the impurities in the water are filtered in the second cavity 24, the water entering the first cavity 22 sequentially passes through the third water pipe 25, the connecting pipe 21 and the first water pipe 19 and then enters the circulation box 2 on the right side of the first filter box 16, and then is driven by the water flowing towards the first filter box 16 in a one-way mode and then enters the first filter box 16 again for filtering, so that the water quality of the water used for cleaning the turbine blade 10 in a circulating mode is guaranteed to be good.
It should be understood that the present invention is not limited to the particular embodiments described herein, but is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A turbine blade scaling cleaning mechanism comprising:
the steam turbine blade water circulation device comprises a shell, a plurality of groups of steam turbine blades and a water inlet pipe, wherein the shell is coated outside the plurality of groups of steam turbine blades, a steam inlet pipe which inputs steam into the shell and pushes the steam turbine blades to rotate through the steam entering the shell is arranged above one end of the shell, a water inlet pipe which inputs water into the shell and pushes the steam turbine blades to rotate through the water entering the shell is arranged below one end of the shell, a steam outlet pipe which is used for outputting the steam in the shell is arranged above the other end of the shell, a water outlet pipe which is used for outputting the water in the shell is arranged below the other end of the shell, and a guide plate which guides the water;
and the circulating box is used for receiving the water discharged from the water outlet pipe and continuously discharging the received water into the shell from the water inlet pipe, and a filtering mechanism which forms a one-way circulating channel and enables the water in the circulating box to circulate in a one-way manner so as to filter impurities in the water is arranged in the circulating box.
2. The turbine blade scaling cleaning mechanism of claim 1, further comprising: the middle part of the shell is provided with a rotating shaft which transversely and movably penetrates through two ends of the shell, and a plurality of groups of turbine blades are fixed on the rotating shaft.
3. The turbine blade scaling cleaning mechanism of claim 1, further comprising: the steam inlet pipe, the steam outlet pipe, all be equipped with the ooff valve in inlet tube and the outlet pipe, one side of casing is equipped with the circulation unit, and one side of circulation unit is equipped with the water suction with the casing outside and with the second water pipe of water from the inlet tube income casing, the opposite side of circulation unit is equipped with the first water pipe of receiving the circulation case internal drainage, the one end of circulation case is equipped with the circulation outlet pipe with the first water pipe of circulation case water input, be equipped with the one-way water valve that makes water one-way by circulation outlet pipe flow to first water pipe in the first water pipe, the other end of circulation case is equipped with the circulation inlet tube of receiving the water drainage in with the casing and going into the circulation case, through dismantled and assembled hose intercommunication between outlet pipe and the circulation inlet tube.
4. The turbine blade scaling cleaning mechanism of claim 1, further comprising: the guide plate is fixedly arranged along the inner wall of the shell in a spiral shape.
5. The turbine blade scaling cleaning mechanism of claim 1, further comprising: the circulation case is fixed in the bottom of casing, and the circulation case is including can be with circulation incasement hydrothermal transmission to the inside heat-conducting plate of casing and separation circulation incasement hydrothermal loss and set up in the rectangular shell of heat-conducting plate one side.
6. The turbine blade scaling cleaning mechanism of claim 1, further comprising: the filtering mechanism comprises a first filtering box which receives water in the circulating water inlet pipe and outputs the water to the circulating water outlet pipe in a one-way mode, an L-shaped filtering plate which filters the water received in the first filtering box is arranged on one side of the first filtering box, the filtering mechanism further comprises a second filtering box which collects impurities separated from part of the water and filtered water in the first filtering box, and a connecting pipe which discharges the water collected in the second filtering box into one side, close to the circulating water inlet pipe, of the first filtering box in a one-way mode and filters the water through the L-shaped filtering plate on the first filtering box again is arranged on one side of the second filtering box.
7. The turbine blade scaling cleaning mechanism of claim 6, wherein: the side of the first filter box is provided with a filtering water hole for water in the circulation box to pass through, two groups of semi-ring plates which can elastically deform and are distributed up and down are arranged at the opening of the filtering water hole, the openings of the two groups of semi-ring plates are arranged oppositely, the semi-ring plates are fixed in a filtering cavity formed between the first filter box and the rotating shaft, the end parts of the two groups of semi-ring plates are integrally provided with water guide blocks which are mutually attached, and one side of each water guide block is provided with a water guide surface which guides water between the first filter box and the L-shaped filter plate to flow to the upper side and the lower side of the first filter box when the water flows back to.
8. The turbine blade scaling cleaning mechanism of claim 7, wherein: the first filter box and the second filter box are respectively fixed inside and outside the circulating box, a second water pipe for communicating the first filter box and the second filter box is arranged between the bottom of the first filter box and the top of the second filter box, a filter plate which is arranged on one side of the second water pipe and can filter water entering the second filter box is arranged inside the second filter box, the inside of the second filter box is partitioned into a second cavity communicated with the second water pipe by one side of the filter plate, the inside of the second filter box is partitioned into a first cavity communicated with a connecting pipe by the other side of the filter plate, an opening communicated with the second cavity is arranged on one side of the bottom of the second filter box, a sealing plug is connected to the opening in a threaded fit manner, a third water pipe communicated between the first cavity and the connecting pipe is arranged on the other side of the bottom of the circulating box, which is positioned on one side of the first filter box close to the water filtering hole, a first water pipe communicated between the inside of the circulating box and, the first water pipe is provided with a one-way valve which discharges the water in the connecting pipe into the circulating tank in one way.
9. A method of cleaning, characterized by: a cleaning mechanism comprising the turbine blade fouling of any one of claims 1 to 8, further comprising:
s1: water flow is introduced, when the turbine blades rotate to work, the switch valves in the water inlet pipe and the water outlet pipe can be opened, the water flow is introduced from the position of the second water pipe through the circulating unit and is introduced into the shell through the water inlet pipe, then the switch valves in the steam inlet pipe and the steam outlet pipe are closed, the supply of water vapor is temporarily stopped, so that the water flow in the cleaning process is prevented from entering the steam inlet pipe and the steam outlet pipe, the water flow entering the shell is washed to the inner wall of the shell and is spirally washed among the plurality of groups of turbine blades along the track of the guide plate under the blocking action of the guide plate, and water flowing at high speed can completely wash away impurities such as water scales among the turbine;
s2: leading out water flow, leading out water after washing the turbine blade from the position of a water outlet pipe and entering a circulating box, leading the water to pass through the circulating box and enter between a first filter box and an L-shaped filter plate through a filter water hole, leading the entered water to extrude two groups of semi-ring plates which are attached and kept sealed outwards so as to open the space between the two groups of semi-ring plates and lead the water to smoothly pass through the space between the first filter box and the L-shaped filter plate for primary filtration, leading one part of the water which enters between the first filter box and the L-shaped filter plate to pass through the L-shaped filter plate and filter impurities such as incrustation scale and the like contained in the water into the left end of the circulating box, leading the other part of the water to be extruded from the position of a second water pipe due to the water pressure generated by the flowing water to enter into a second filter box, and leading the impurities such as incrustation scale and the like to be filtered, the water entering the second filter box is pushed to be discharged into the circulating box on the right side of the first filter box from the third water pipe, the connecting pipe and the first water pipe in sequence due to the pressure generated by the water continuously entering the second filter box, and then continuously enters the first filter box along with the water continuously entering the circulating box to fulfill the aim of multiple-time circulating filtration;
s3: water flow is introduced again, water after being filtered for multiple times in the circulating tank is introduced into the shell again through the circulating water outlet pipe, the first water pipe, the circulating unit and the water inlet pipe in sequence, at the moment, water source supply of the second water pipe can be stopped, and the purpose of circularly washing the turbine blades in the shell is achieved through a fixed amount of water;
s4: the water flow is discharged after cleaning, the hose connected to the circulating water inlet pipe can be detached, the circulating unit is continuously started, redundant water in the circulating box and the shell is discharged from the end part of the hose, the phenomenon of water accumulation in the shell cannot be caused, the switch valves in the steam inlet pipe and the steam outlet pipe are opened when the water flow is discharged, and water vapor is introduced into the shell, so that the situation that the water vapor can be continuously connected to provide rotating power for the blades of the steam turbine when the water is about to be discharged or is discharged is ensured, the phenomenon that the equipment stops running cannot be caused, and when the water in the shell and the circulating box is completely discharged, the switch valves in the water inlet pipe and the water outlet pipe are closed, and the water vapor in the shell is prevented from entering;
s5: and discharging scale after cleaning, opening the sealing plug, and sealing the sealing plug after discharging impurities such as the scale collected in the second cavity.
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| CN202010790284.4A CN111940382B (en) | 2020-08-07 | 2020-08-07 | Cleaning mechanism for turbine blade scaling and cleaning method based on mechanism |
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| CN115254855A (en) * | 2022-07-22 | 2022-11-01 | 广东旭业光电科技股份有限公司 | Cleaning and impurity removing device for optical lens production and processing |
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| CN111940382B (en) | 2022-07-29 |
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Denomination of invention: A cleaning mechanism for scaling on steam turbine blades and a cleaning method based on this mechanism Effective date of registration: 20230914 Granted publication date: 20220729 Pledgee: Huainan Jiayuan Financing Guarantee Co.,Ltd. Pledgor: Huainan taineng Power Engineering Co.,Ltd. Registration number: Y2023980056913 |