CN117655658A - Ultra-small gap tight-fit connecting shaft auxiliary device and use method - Google Patents
Ultra-small gap tight-fit connecting shaft auxiliary device and use method Download PDFInfo
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- CN117655658A CN117655658A CN202410121408.8A CN202410121408A CN117655658A CN 117655658 A CN117655658 A CN 117655658A CN 202410121408 A CN202410121408 A CN 202410121408A CN 117655658 A CN117655658 A CN 117655658A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010168 coupling process Methods 0.000 claims abstract description 43
- 230000008878 coupling Effects 0.000 claims abstract description 42
- 238000005859 coupling reaction Methods 0.000 claims abstract description 42
- 238000007789 sealing Methods 0.000 claims description 42
- 239000007921 spray Substances 0.000 claims description 38
- 238000004886 process control Methods 0.000 claims description 33
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 28
- 238000002955 isolation Methods 0.000 claims description 25
- 239000007789 gas Substances 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000012459 cleaning agent Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 230000002045 lasting effect Effects 0.000 claims description 3
- 238000009991 scouring Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims 1
- 210000003437 trachea Anatomy 0.000 claims 1
- 235000011089 carbon dioxide Nutrition 0.000 description 22
- 238000001816 cooling Methods 0.000 description 8
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
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- 208000001034 Frostbite Diseases 0.000 description 1
- 244000137852 Petrea volubilis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
- B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a tight-fit coupling auxiliary device with ultra-small gap and a use method, which relate to the technical field of turbo generators.
Description
Technical Field
The invention relates to the technical field of turbo generators, in particular to an ultra-small gap tight-fit coupling auxiliary device and a using method thereof, which are suitable for a single-shaft double-drive combined cycle gas turbine generator.
Background
The technical characteristics of the single-shaft double-drive combined cycle gas turbine generator are that the unit has two driving ends, the left-side steam end is driven by a gas turbine, the right-side excitation end is driven by a steam turbine, the generator is arranged in the middle of the whole unit, and the generator coupler needs to be tightly connected with the steam turbine shaft to ensure that the shaft systems of the generator and the steam turbine are firmly integrated. In general, the method of tightening the shaft is to use a temperature difference assembly method to ensure that the temperature of the connecting surface of the female shaft spigot of the generator coupling is higher than that of the connecting surface of the male shaft spigot of the turbine shaft, so as to form a temperature difference of more than 55 degrees, and the assembly is carried out by utilizing the principle of thermal expansion and cold contraction. The specific implementation thought has two ways: firstly, a heating method is adopted, namely, a concave shaft spigot connecting surface of a generator coupling is heated, and after the generator coupling is expanded, the generator coupling is connected with a convex shaft spigot connecting surface of a turbine shaft; and secondly, cooling the connection surface of the male shaft spigot of the turbine shaft by adopting a cooling method, and assembling the connection surface of the male shaft spigot of the turbine shaft with the connection surface of the female shaft spigot of the generator coupling after shrinking. Because of structural limitations, the female shaft spigot connection face of the generator coupling and the male shaft spigot connection face of the turbine shaft must complete the tight shaft coupling in a small space with a horizontal distance of not more than 55mm, which has the following problems: the first is that the heating method is not applicable. In a narrow space with a horizontal distance of only 55mm, firstly, the air flame mode cannot be used for heating at all, and other heating modes cannot enable the concave shaft spigot connecting surface of the generator coupling with the diameter of 1100mm to realize 55-DEG uniform temperature rise; secondly, because the heat energy transmission mode is radiation, all the known heating modes can not heat the connecting surface of the female shaft spigot of the generator coupling within the horizontal distance of 55mm, and meanwhile, the connecting surface of the male shaft spigot of the turbine shaft is not affected by the heat radiation to heat, so that the purpose can not be achieved. And the second is that the conventional cooling method has poor effect and risk. The conventional cooling method uses thin heat-transfer soft material to wrap dry ice blocks to form a dry ice bag, uniformly applies the dry ice bag on the connection surface of the male shaft spigot of the turbine shaft, and uses a plurality of layers of soft heat-insulating materials to tightly wrap the dry ice bag and the coupling. Because the operation is required in a narrow gap, the number of the dry ice bags used each time is limited, the dry ice bags are required to be replaced all once every 3-5 minutes, and the manual contact operation is required for replacing the dry ice bags, so that the risk of frostbite is extremely high; meanwhile, the operation in a narrow space is time-consuming and labor-consuming, each time the dry ice bag is laid and replaced, the cooling effect is very affected by frequent replacement of the dry ice bag, often, the time is tens of hours, the standard is still not reached, and the installation requirement is hardly met. Therefore, a new device and method of use are needed to solve the above problems.
Disclosure of Invention
In view of the above, the invention aims to disclose a tight-fit connecting shaft auxiliary device which adopts a uniform injection principle, can realize tight-fit shaft connection in a narrow space by a temperature difference assembly method, has the advantages of high efficiency, high success rate, good safety, convenient installation and disassembly, reusability and low cost, and adopts an ultra-small gap, and the application method thereof, wherein the technical scheme of the invention is as follows: the utility model provides a tight volume cooperation axle auxiliary device that links in ultra-small clearance, by deformation process control module, contact seal isolation module, the flow control valve, connecting pipe A, the jet engine is constituteed, deformation process control module firmly adsorbs on turbine shaft's terminal surface A from right to left, 360 parcel form is personally submitted to turbine shaft's protruding axle tang connection, deformation process control module's connecting pipe B top-down and flow control valve intercommunication, connecting pipe A from bottom to top and flow control valve intercommunication, the jet engine from bottom to top and connecting pipe A intercommunication form wholly, contact seal isolation module firmly adsorbs on generator shaft's terminal surface B from left to right, cover generator shaft's concave axle tang connection face.
In the tight-fit connecting shaft auxiliary device with the ultra-small gap, the deformation process control module consists of an annular outer cover, an annular cover plate, a permanent magnet A, a connecting pipe C, a distribution annular pipe, a fixed pipe frame, an ejector, a communicating vessel and a connecting pipe B, wherein the annular outer cover is vertically arranged, the permanent magnet A is arranged at the left upper position inside the annular outer cover and is firmly adhered to the annular outer cover, the fixed pipe frame and the distribution annular pipe are arranged inside the annular outer cover, the right side of the fixed pipe frame is firmly adhered to the distribution annular pipe, the left side of the fixed pipe frame is firmly adhered to the annular outer cover, the connecting pipe C penetrates into the annular outer cover from top to bottom and is communicated with the distribution annular pipe, the communicating vessel is communicated with the connecting pipe C from top to bottom, the annular cover plate is tightly clamped with the annular outer cover from right to left, and the whole body is formed.
In the tight-fit coupling auxiliary device with the ultra-small gap, 12 ejectors are uniformly distributed on the circumference by taking the center of the annular outer cover as the axis.
In the tight-fit coupling auxiliary device with the ultra-small gap, the annular cover plate is annular; the annular outer cover is in a circular shape, and the section of the annular outer cover is in a hollow rectangle; the annular cover plate is in buckle connection with the annular outer cover.
In the tight-fit connecting shaft auxiliary device with the ultra-small gap, the ejector consists of an ejector, an adjusting pipe and a connecting pipe D, wherein the connecting pipe D is vertically arranged, the adjusting pipe is communicated with the connecting pipe D from bottom to top, and the ejector is communicated with the adjusting pipe from bottom to top.
In the tight-fit connecting shaft auxiliary device with the ultra-small gap, the spraying device is composed of a guide cover and a spray head, the spray head is arranged at the center of the inner side of the guide cover and is firmly adhered, the spray head is 1/4 ball-shaped, the convex spherical surface faces downwards, 4 spray nozzles A are symmetrically arranged at the left side and the right side of the spray head, 2 spray nozzles B are arranged vertically below the spray head, the spray nozzles A are round, the effective caliber of the spray nozzles A is twice that of the spray nozzles B, and the spray nozzles B are round.
In the tight-fit connecting shaft auxiliary device with the ultra-small gap, the contact type sealing isolation module consists of a temperature-resistant shell, a sealing window, a permanent magnet B, a sealing heat insulation pad, a permanent magnet C, a self-sealing inflation valve, temperature sensing alarms A and an air pressure monitor, wherein the temperature-resistant shell is vertically arranged, 4 temperature sensing alarms A are uniformly distributed on the circumference of the left side wall of the temperature-resistant shell, the air pressure monitor is adhered to the inner side of the right side wall of the temperature-resistant shell, the self-sealing inflation valve is arranged on the upper side wall of the temperature-resistant shell, the sealing window is screwed with the temperature-resistant shell from right to left, the permanent magnet B is firmly adhered with the temperature-resistant shell from right to left, and the sealing heat insulation pad is firmly adhered with the temperature-resistant shell from right to left, so that the permanent magnet C forms a whole.
In the tight-fit connecting shaft auxiliary device with the ultra-small gap, the sealing window is in threaded sealing connection with the temperature-resistant shell, and the temperature-sensitive alarm A passes through the left side wall of the temperature-resistant shell from right to left and is firmly adhered to the temperature-resistant shell.
The using method of the tight-fit connecting shaft auxiliary device with the ultra-small gap comprises the following steps:
step 1, cleaning an end face A of a turbine shaft, an end face B of a generator coupling and a connecting face of a concave shaft spigot by using cleaning agents, water, scouring pads and abrasive paper, and removing dust, filth, rust-proof oil and stains;
step 2, firmly adsorbing a deformation process control module on an end face A of a turbine shaft from right to left, wrapping the connection surface of a male shaft spigot of the turbine shaft by 360 degrees, checking the fitting degree of a contact surface by using a 0.1mm thick feeler gauge, communicating a connecting pipe B of the deformation process control module with a flow control valve from top to bottom after the deformation process control module is qualified, communicating the connecting pipe A with the flow control valve from bottom to top, and communicating an ejector with the connecting pipe A from bottom to top to form a whole;
step 3, stretching and direction adjusting are carried out on the adjusting pipes of the ejectors, so that the distance and the relative angle between the ejection device of each ejector and the connecting surface of the male shaft spigot are consistent, and the connecting surface of each ejector and the male shaft spigot are centripetal and vertical;
step 4, filling nitrogen into the contact type sealed isolation module through the self-sealing inflation valve, stopping after the pressure reaches a preset pressure value by taking the prompt of the air pressure monitor as the criterion, and closing the self-sealing inflation valve;
step 5, placing the contact type sealing and isolating module between the turbine shaft and the generator coupling, firmly adsorbing the rear contact type sealing and isolating module on the end face B of the generator coupling from left to right, integrally covering the connecting surface of the female shaft spigot of the generator coupling, checking the laminating degree of the contact surface by using a 0.1mm thick feeler gauge, and confirming that the contact surface is qualified;
step 6, adjusting the flow control valve to be in an on state of 1/5, starting the sprayer, closing the sprayer after lasting 15-20 seconds, and enabling temperature signals fed back by the 4 temperature sensing alarms A on the contact type sealing and isolating module to be reduced in temperature, wherein the difference value between every two temperature sensing alarms A is not more than 20%;
step 7, adjusting the flow control valve to a full-open state, starting the sprayer to continuously spray, and closing the sprayer after temperature signals fed back by the 4 temperature sensing alarms A reach preset values;
and 8, using a fan, a gas fan and a gas pipe to quickly blow off carbon dioxide gas between a turbine shaft and a generator coupling, then using a laser range finder or an acoustic range finder to measure the outer diameter of a connecting surface of a male shaft spigot, if the outer diameter of the connecting surface of the male shaft spigot does not reach the standard, continuously starting an ejector to continuously jet, removing a contact type sealed isolation module after confirming the outer diameter of the male shaft spigot reaches the standard, removing a deformation process control module, horizontally displacing the generator coupling from right to left, connecting the generator coupling with the turbine shaft, forming tight quantity matching connection, and completing the whole shaft connecting process.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention creatively realizes the tight-fit of the turbine shaft and the generator coupling in a narrow space by a temperature difference assembly method, greatly improves the success rate, the safety and the working efficiency of the assembly process, has the characteristics of convenient assembly and disassembly, repeated use and low cost, and simultaneously has universality and can be used on the existing full-series single-shaft double-drive combined cycle gas turbine generator.
2. Compared with the traditional manual cooling method, the invention has the following advantages:
1) According to the invention, dry ice particles can be conveyed into the deformation process control module through the ejector, the unit conveying flow is accurately controlled through the flow control valve, and dry ice particles are continuously ejected to the connection surface of the male shaft spigot of the turbine shaft, so that complicated procedures such as manual laying, binding, fixing of dry ice bags and manual wrapping of the dry ice bags in the traditional mode are omitted, the dry ice bags are not required to be replaced repeatedly in the process, and the efficiency and the success rate are effectively improved;
2) When the deformation process control module sprays dry ice particles on the connection surface of the male shaft spigot of the turbine shaft, manual close-distance operation is not needed, risk of injury of personnel is avoided, and safety is greatly improved;
3) The deformation process control module adopts a magnetic attraction principle, can be firmly adsorbed on the end face A of the turbine shaft without additional fixation, and simultaneously can realize uniform and continuous injection of 360-degree dead angle-free and difference-free convex shaft spigot connecting surfaces of the turbine shaft;
4) When the temperature of the connection surface of the male shaft spigot of the turbine shaft is reduced to a preset value, the temperature sensing alarm A displays real temperature and gives an alarm, manual repeated measurement and confirmation are not needed, and the temperature sensing alarm A is uniformly arranged at 4 positions on the contact type sealed isolation module, so that the temperature sensing is more accurate;
5) The inside of the contact type sealed isolation module is filled with nitrogen, the heat conductivity coefficient is extremely low, the excellent temperature isolation effect is achieved, meanwhile, the contact type sealed isolation module adopts the magnetic attraction principle, and can be firmly adsorbed on the end face B of the generator coupler without additional fixation, so that the concave shaft spigot connecting face of the generator coupler is integrally covered, the concave shaft spigot connecting face of the generator coupler is prevented from being influenced by dry ice cooling to the greatest extent, and the temperature of the concave shaft spigot connecting face of the generator coupler is prevented from being reduced;
6) After the temperature of the connection surface of the male shaft spigot of the turbine shaft is reduced to a preset value, the deformation process control module and the contact type sealing and isolating module are fixed by adopting a magnetic attraction principle, and can be quickly and nondestructively disassembled, so that the disassembly is convenient and quick.
Drawings
FIG. 1 is a detailed view of a tight-fitting coupling assist device with ultra-small clearances.
FIG. 2 is a detailed view of a deformation process control module.
Figure 3 is a view in the direction a of figure 2,
fig. 4 is a B-direction view of fig. 3.
Fig. 5 is a detailed view of the injector.
Fig. 6 is a detailed view of the ejection device.
Fig. 7 is a detailed view of a contact seal isolation module.
Fig. 8 is a view in the direction C of fig. 7.
Fig. 9 is a D-direction view of fig. 8.
Fig. 10 is an enlarged view of fig. 8 in the E direction.
The figure indicates: 1-a deformation process control module; 2-contact seal isolation module; 3-a flow control valve; 4-connecting pipe A; 5-spraying machine; 6-turbine shaft; 7-end face A; 8-a male shaft spigot connecting surface; 9-generator coupling; 10-end face B; 11-an annular housing; 12-an annular cover plate; 13-permanent magnet a; 14-a concave shaft spigot connecting surface; 15-connecting pipe C; 16-distribution loop; 17-fixing the pipe frame; 18-an ejector; 19-communicating vessel; 20-connecting pipe B; 21-an ejection device; 22-adjusting the tube; 23-connecting tube D; 24-a guide cover; 25-spraying heads; 26-spout a; 27-spout B; 28-a temperature resistant shell; 29-sealing the window; 30-permanent magnet B; 31-sealing the thermal insulation pad; 32-permanent magnet C; 33-self-closing inflation valve; 34-a temperature sensing alarm A; 35-an air pressure monitor; 36-left side wall; 37-right side wall; 38-upper side wall.
Detailed Description
The first embodiment is as follows: as shown in FIG. 1, the tight-fit coupling auxiliary device with ultra-small gap consists of a deformation process control module 1, a contact type sealing and isolating module 2, a flow control valve 3, a connecting pipe A4 and an ejector 5, wherein the deformation process control module 1 is firmly adsorbed on the end face A7 of a turbine shaft 6 from right to left, a convex shaft spigot connecting surface 8 of the turbine shaft 6 is in a 360-degree wrapping shape, a connecting pipe B20 of the deformation process control module 1 is communicated with the flow control valve 3 from top to bottom, the connecting pipe A4 is communicated with the flow control valve 3 from bottom to top, the ejector 5 is communicated with the connecting pipe A4 from bottom to top to form a whole, and the contact type sealing and isolating module 2 is firmly adsorbed on the end face B10 of a generator coupling 9 from left to right to integrally cover a concave shaft spigot connecting surface 14 of the generator coupling 9.
In the embodiment, dry ice particles are conveyed into the deformation process control module 1 through the ejector 5, the unit conveying flow is precisely controlled through the flow control valve 3, dry ice particle ejection is continuously carried out on the convex shaft spigot connecting surface 8 of the turbine shaft 6, complicated procedures such as manual laying, binding and fixing of dry ice bags in a traditional mode are omitted, manual wrapping and the like are carried out on the dry ice bags, the dry ice bags do not need to be replaced repeatedly in the process, and the efficiency and the success rate are greatly improved; the contact type sealing and isolating module 2 forms global coverage on the concave shaft spigot connecting surface 14 of the generator coupling 9, so that the concave shaft spigot connecting surface 14 of the generator coupling 9 is not influenced by dry ice particles, and the normal temperature is maintained; the scheme of the invention can realize tight shaft connection in a narrow space by a temperature difference assembly method, and has the characteristics of high efficiency, high success rate, good safety, convenient assembly and disassembly, reusability and low cost.
The second embodiment is as follows: in this embodiment, as shown in fig. 2, 3, and 4, the deformation process control module 1 further defines a deformation process control module 1, where the deformation process control module 1 is composed of an annular housing 11, an annular cover plate 12, a permanent magnet a13, a connecting pipe C15, a distribution ring 16, a fixed pipe frame 17, an ejector 18, a communicating vessel 19, and a connecting pipe B20, the annular housing 11 is vertically disposed, the permanent magnet a13 is disposed at an upper left position inside the annular housing 11 and is firmly adhered to the annular housing 11, the fixed pipe frame 17 and the distribution ring 16 are disposed inside the annular housing 11, after the right side of the fixed pipe frame 17 is firmly adhered to the distribution ring 16, the left side is firmly adhered to the annular housing 11, the connecting pipe C15 penetrates into the annular housing 11 from top to bottom and is communicated with the distribution ring 16, the ejector 18 penetrates into the annular housing 11 from bottom to top and is communicated with the distribution ring 16, the communicating vessel 19 is communicated with the connecting pipe C15 from top to bottom, the annular cover plate 12 is communicated with the annular cover plate 11 from right to left, the whole, and the ejector 18 is uniformly distributed around the center 12 of the annular housing 11. The annular cover plate 12 is in a circular shape; the annular outer cover 11 is in a circular ring shape, and the section of the annular outer cover 11 is in a hollow rectangle; the annular cover plate 12 is in snap connection with the annular housing 11.
In this embodiment, deformation process control module 1 can realize carrying out 360 degrees no dead angles evenly to protruding axle tang joint face 8 of turbine shaft 6 and spray, and during operation, operating personnel only need long-range open the back record time, after reaching preset time or obtaining preset temperature warning, long-range close can, unmanned person closely operated injury risk, the security promotes by a wide margin.
In the third embodiment, the ejector 18 of the second embodiment is further limited, as shown in fig. 5, in this embodiment, the ejector 18 is composed of a spraying device 21, an adjusting tube 22, and a connecting tube D23, the connecting tube D23 is vertically disposed, the adjusting tube 22 is communicated with the connecting tube D23 from bottom to top, and the spraying device 21 is communicated with the adjusting tube 22 from bottom to top.
In this embodiment, the adjusting tube 22 is made of a plastic polymer composite material, is in a pleated shape, can be pulled to a required angle and length in any direction as required, is fixed in shape, is insensitive to temperature, and is not changed by temperature change, and the distance and the relative angle between the ejection device 21 of each ejector 18 and the male shaft spigot connecting surface 8 can be ensured to be consistent and perpendicular to the male shaft spigot connecting surface 8 by changing the length and the direction of the adjusting tube 22.
In a fourth embodiment, as shown in fig. 6, the spraying device 21 in the third embodiment is further limited, in this embodiment, the spraying device 21 is composed of a guide cover 24 and a spray nozzle 25, the spray nozzle 25 is disposed at the center of the inner side of the guide cover 24 and is firmly adhered, the spray nozzle 25 is 1/4 spherical, the convex spherical surface faces downward, 4 spray nozzles a26 are symmetrically disposed on the left and right sides of the spray nozzle 25, 2 spray nozzles B27 are vertically below the spray nozzle 25, the spray nozzles a26 are circular, the effective caliber of the spray nozzles is twice that of the spray nozzles B27, and the spray nozzles B27 are circular.
In this embodiment, the guide cover 24 can ensure that two adjacent injectors 18 do not cross during injection, so as to avoid cross injection affecting uniformity, and the nozzle a26 is circular, and has an effective caliber twice that of the nozzle B27, so that the full-angle injection pressure in the coverage area of the nozzle 25 is ensured to be the same, and the purpose of uniform injection is achieved.
In a fifth embodiment, as shown in fig. 7, 8, 9 and 10, in the first embodiment, the contact seal isolation module 2 is further defined, and in this embodiment, the contact seal isolation module 2 is composed of a heat resistant housing 28, a seal window 29, a permanent magnet B30, a seal thermal insulation pad 31, a permanent magnet C32, a self-sealing inflation valve 33, a temperature sensing alarm a34 and an air pressure monitor 35, the heat resistant housing 28 is vertically placed, 4 temperature sensing alarms a34 are uniformly distributed on the circumference of a left side wall 36, the air pressure monitor 35 is adhered to the inner side of a right side wall 37, the self-sealing inflation valve 33 is arranged on an upper side wall 38, the seal window 29 is tightly adhered to the heat resistant housing 28 from left, the permanent magnet B30 is firmly adhered to the heat resistant housing 28 from right to left, and the permanent magnet C32 is firmly adhered to the heat resistant housing 28 from right to left to form a whole. The sealing window 29 is in threaded sealing connection with the temperature-resistant shell 28, and after the temperature-sensitive alarm A34 passes through the left side wall 36 of the temperature-resistant shell 28 from right to left, all contact surfaces of the temperature-sensitive alarm A34 and the temperature-resistant shell 28 are firmly adhered by using a sealing adhesive;
in the embodiment, after the inside of the contact type sealed isolation module 2 is filled with nitrogen, the heat conductivity coefficient is extremely low, the excellent temperature isolation effect is realized, the whole of the concave shaft spigot connecting surface 14 of the generator coupler 9 is covered, the concave shaft spigot connecting surface 14 of the generator coupler 9 is prevented from being influenced by cooling to the greatest extent, and the temperature of the concave shaft spigot connecting surface is prevented from being reduced; the temperature sensing alarm A34 can accurately and effectively measure the temperature change value of the male shaft spigot connecting surface 8 of the turbine shaft 6, and immediately alarms once reaching a preset value, and the measurement is accurate and rapid.
In the sixth embodiment, the step 1, cleaning the end face A7 of the turbine shaft 6, the male shaft spigot connecting face 8, the end face B10 of the generator coupling 9 and the female shaft spigot connecting face 14 by using cleaning agent, water, scouring pad and sand paper to remove dust, filth, rust-preventive oil and stains;
step 2, firmly adsorbing the deformation process control module 1 on an end face A7 of the turbine shaft 6 from right to left, wrapping a convex shaft spigot connecting surface 8 of the turbine shaft 6 by 360 degrees, checking the fitting degree of a contact surface by using a 0.1mm thick feeler gauge, communicating a connecting pipe B20 of the deformation process control module 1 with a flow control valve 3 from top to bottom after the deformation process control module is qualified, communicating a connecting pipe A4 with the flow control valve 3 from bottom to top, and communicating an ejector 5 with the connecting pipe A4 from bottom to top to form a whole;
step 3, stretching and direction adjusting are carried out on the adjusting pipes 22 of the ejectors 18, so that the distance and the relative angle between the ejection device 21 of each ejector 18 and the convex shaft spigot connecting surface 8 are consistent, and the ejection device is centripetally perpendicular to the convex shaft spigot connecting surface 8;
step 4, filling nitrogen into the contact type sealed isolation module 2 through the self-sealing inflation valve 33, stopping after the pressure reaches a preset pressure value by taking the prompt of the air pressure monitor 35 as the criterion, and closing the self-sealing inflation valve 33;
step 5, placing the contact type sealing and isolating module 2 between the turbine shaft 6 and the generator coupler 9, then firmly adsorbing the contact type sealing and isolating module 2 on the end face B10 of the generator coupler 9 from left to right, integrally covering the concave shaft spigot connecting surface 14 of the generator coupler 9, checking the fitting degree of the contact surface by using a 0.1mm thick feeler gauge, and confirming that the contact surface is qualified;
step 6, adjusting the flow control valve 3 to be in an opening 1/5 state, starting the sprayer 5, closing the sprayer after lasting 15-20 seconds, and enabling temperature signals fed back by the 4 temperature sensing alarms A34 on the contact type sealing isolation module 2 to be reduced in temperature, wherein the difference value between every two temperature sensing alarms is not more than 20%;
step 7, adjusting the flow control valve 3 to a full-open state, starting the injector 5 to perform continuous injection, and closing the injector 5 after temperature signals fed back by the 4 temperature sensing alarms A34 reach preset values;
step 8, using a fan, a gas fan and a gas pipe to blow off the carbon dioxide gas between the turbine shaft 6 and the generator coupling 9, then using a laser range finder or an acoustic range finder to measure the outer diameter of the male shaft spigot connecting surface 8, if the male shaft spigot connecting surface is not up to standard, continuously starting the sprayer 5 to perform continuous spraying, removing the contact type sealed isolation module 2 after confirming the male shaft spigot connecting surface is up to standard, removing the deformation process control module 1, horizontally displacing the generator coupling 9 from right to left, connecting the generator coupling with the turbine shaft 6, forming a tight-fit connection, and completing the whole coupling process.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it should be apparent to those skilled in the art that: the technical schemes described in the foregoing embodiments may be modified, or some or all of the technical features may be replaced with equivalents; however, these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the technical scope of the embodiments of the present invention.
Claims (6)
1. An ultra-small gap tight-fit coupling auxiliary device is characterized in that: the device comprises a deformation process control module (1), a contact type sealing isolation module (2), a flow control valve (3), a connecting pipe A (4) and an ejector (5), wherein the deformation process control module (1) is firmly adsorbed on an end face A (7) of a turbine shaft (6) from right to left, a convex shaft spigot connecting surface (8) of the turbine shaft (6) is in a 360-degree wrapping shape, a connecting pipe B (20) of the deformation process control module (1) is communicated with the flow control valve (3) from top to bottom, the connecting pipe A (4) is communicated with the flow control valve (3) from bottom to top, the ejector (5) is communicated with the connecting pipe A (4) from bottom to top to form a whole, and the contact type sealing isolation module (2) is firmly adsorbed on an end face B (10) of the generator shaft (9) from left to right and covers a concave shaft spigot connecting surface (14) of the generator shaft (9);
the deformation process control module (1) consists of an annular outer cover (11), an annular cover plate (12), a permanent magnet A (13), a connecting pipe C (15), a distribution annular pipe (16), a fixed pipe rack (17), an ejector (18), a communicating vessel (19) and a connecting pipe B (20), wherein the annular outer cover (11) is vertically arranged, the permanent magnet A (13) is arranged at the left upper position inside the annular outer cover (11) and is firmly adhered to the annular outer cover (11), the fixed pipe rack (17) and the distribution annular pipe (16) are arranged inside the annular outer cover (11), the right side of the fixed pipe rack (17) is firmly adhered to the distribution annular pipe (16), the left side of the fixed pipe rack (17) is firmly adhered to the annular outer cover (11), the connecting pipe C (15) penetrates into the annular outer cover (11) from top to bottom and is communicated with the distribution annular pipe (16), the ejector (18) penetrates into the annular outer cover (11) from top to bottom, the communicating vessel (19) is communicated with the connecting pipe C (15) from top to bottom, and the B (20) is communicated with the communicating vessel (19), and the annular cover plate (12) is integrally clamped with the annular outer cover (11) from top to bottom; the contact type sealed isolation module (2) consists of a temperature-resistant shell (28), a sealing window (29), a permanent magnet B (30), a sealed heat insulation pad (31), a permanent magnet C (32), a self-sealing inflation valve (33), temperature sensing alarms A (34) and an air pressure monitor (35), wherein the temperature-resistant shell (28) is vertically arranged, 4 temperature sensing alarms A (34) are uniformly distributed on the circumference of the left side wall (36) of the temperature-resistant shell, the air pressure monitor (35) is adhered to the inner side of the right side wall (37), the self-sealing inflation valve (33) is arranged on the upper side wall (38), the sealing window (29) is screwed with the temperature-resistant shell (28) from right to left, the permanent magnet B (30) is firmly adhered to the temperature-resistant shell (28) from right to left, the sealed heat insulation pad (31) is firmly adhered to the temperature-resistant shell (28) from right to left, and the permanent magnet C (32) is firmly adhered to the temperature-resistant shell (28) from right to left to form a whole.
2. The ultra-small gap tight-fit coupling assist device of claim 1, wherein: the whole annular outer cover (11) is in a circular ring shape, and the section of the annular outer cover (11) is in a hollow rectangle; the annular cover plate (12) is in a circular shape; the annular cover plate (12) is in buckling connection with the annular outer cover (11).
3. The ultra-small gap tight-fit coupling assist device of claim 1, wherein: the number of the ejectors (18) is 12 uniformly distributed circumferentially by taking the center of the annular outer cover (11) as an axis; the ejector (18) consists of an ejector (21), an adjusting pipe (22) and a connecting pipe D (23), wherein the connecting pipe D (23) is vertically arranged, the adjusting pipe (22) is communicated with the connecting pipe D (23) from bottom to top, and the ejector (21) is communicated with the adjusting pipe (22) from bottom to top.
4. A tight-fitting coupling assist device for ultra-small clearances as defined in claim 3, wherein: the spraying device (21) consists of a guide cover (24) and a spray head (25), wherein the spray head (25) is arranged at the center of the inner side of the guide cover (24) and is firmly adhered, the spray head (25) is 1/4 spherical, the convex spherical surface faces downwards, 4 spray nozzles A (26) are symmetrically arranged at the left side and the right side of the spray head (25), 2 spray nozzles B (27) are vertically arranged below the spray head (25), the spray nozzles A (26) are circular, the effective caliber of each spray nozzle A is twice that of the spray nozzles B (27), and the spray nozzles B (27) are circular.
5. The ultra-small gap tight-fit coupling assist device of claim 1, wherein: the sealing window (29) is in threaded sealing connection with the temperature-resistant shell (28), and the temperature-sensitive alarm A (34) penetrates through the left side wall (36) of the temperature-resistant shell (28) from right to left and is firmly adhered to the temperature-resistant shell (28).
6. A method of using the ultra-small gap tight fit coupling assist device of any one of claims 1 to 5, comprising the steps of:
step 1, cleaning an end face A (7), a convex shaft spigot connecting surface (8) and an end face B (10) of a generator coupling (9) of a turbine shaft (6) and a concave shaft spigot connecting surface (14) by using a cleaning agent, water, scouring pad and abrasive paper, and removing dust, filth, rust-preventive oil and stains;
step 2, firmly adsorbing a deformation process control module (1) on an end face A (7) of a turbine shaft (6) from right to left, wrapping a convex shaft spigot connecting surface (8) of the turbine shaft (6) by 360 degrees, checking the fitting degree of a contact surface by using a 0.1mm thick feeler gauge, communicating a connecting pipe B (20) of the deformation process control module (1) with a flow control valve (3) from top to bottom after passing, communicating a connecting pipe A (4) with the flow control valve (3) from bottom to top, and communicating an ejector (5) with the connecting pipe A (4) from bottom to top to form a whole;
step 3, stretching and direction adjusting are carried out on the adjusting pipes (22) of the ejectors (18) so that the distance and the relative angle between the ejection device (21) of each ejector (18) and the convex shaft spigot connecting surface (8) are consistent, and the ejection device is centripetally perpendicular to the convex shaft spigot connecting surface (8);
step 4, filling nitrogen into the contact type sealed isolation module (2) through the self-sealing inflation valve (33), stopping after reaching a preset pressure value by taking the prompt of the air pressure monitor (35) as the criterion, and closing the self-sealing inflation valve (33);
step 5, placing the contact type sealing isolation module (2) between the turbine shaft (6) and the generator coupler (9), then firmly adsorbing the contact type sealing isolation module (2) on the end face B (10) of the generator coupler (9) from left to right, integrally covering the concave shaft spigot connecting surface (14) of the generator coupler (9), and checking the fitting degree of the contact surface by using a 0.1mm thick feeler gauge and confirming that the contact surface is qualified;
step 6, adjusting the flow control valve (3) to be in an on-state of 1/5, starting the sprayer (5) to be closed after lasting 15-20 seconds, wherein temperature signals fed back by the 4 temperature sensing alarms A (34) on the contact type sealing and isolating module (2) are reduced in temperature, and the difference value between every two temperature sensing alarms is not more than 20%;
step 7, adjusting the flow control valve (3) to a full-open state, starting the sprayer (5) to continuously spray, and closing the sprayer (5) after temperature signals fed back by the 4 temperature sensing alarms A (34) reach preset values;
step 8, use fan, air fan, trachea to blow off the carbon dioxide gas between turbine shaft (6) and the generator shaft coupling (9) fast, then use laser range finder or sonic range finder to measure protruding axle tang junction surface (8) external diameter, if not up to standard, then continue to start sprayer (5) and spray continuously, confirm after reaching standard, shift out contact seal isolation module (2) earlier, then shift out deformation process control module (1), shift out generator shaft coupling (9) from right left horizontal displacement again, be connected with turbine shaft (6), form tight volume cooperation and connect, accomplish whole continuous axle process.
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| CN202410121408.8A CN117655658B (en) | 2024-01-30 | 2024-01-30 | Ultra-small gap tight-fit connecting shaft auxiliary device and use method |
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| JP2001170824A (en) * | 1999-12-20 | 2001-06-26 | Canon Inc | Shrink fitting method for member and support axis having the member |
| JP2002028827A (en) * | 2000-07-17 | 2002-01-29 | Fuji Electronics Industry Co Ltd | Manufacturing device for long workpiece and manufacturing method for long workpiece |
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| CN117655658B (en) | 2024-04-09 |
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