Portable emergency turning gear for steam turbine

Abstract

The utility model relates to the technical field of steam turbines, and discloses a portable steam turbine emergency turning gear which comprises an electric pressure test pump, a right side pipeline of the electric pressure test pump is connected with an energy accumulator, and one side, far away from the electric pressure test pump, of the energy accumulator is connected with a pressure gauge through an electric wire. Through cooperation of the electric pressure test pump, the energy accumulator, the air switch and the contactor, steam turbine barring under the condition that an oil pump cannot run is effectively achieved, the electric pressure test pump is used as a power source, the energy accumulator is combined, the structure in the emergency barring device is integrally formed, and the barring efficiency is improved. The emergency vehicle spraying device is small in size, light in weight, convenient to use and good in effect, meanwhile, the electric pressure test pump is used as a power source, the energy accumulator is additionally arranged in the device to serve as a hydraulic energy conversion station due to the fact that oil pressure needed by a steam turbine turning gear is high and flow is large, and therefore the problem that the flow of the small pressure test pump is insufficient is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a steam turbine technical field, concretely is a portable steam turbine emergency turning gear. BACKGROUND

[0002] Steam turbine is also called steam turbine engine, and it is a kind of rotary steam power device, high-temperature and high-pressure steam is injected to blade after becoming accelerated airflow through fixed nozzle, and the rotation of rotor equipped with blade row is realized, and steam turbine is the main equipment of modern thermal power plant, and it is also used in metallurgical industry, chemical industry and ship power device, after steam turbine shutdown, in order to ensure that rotor and bearing are continuously and stably cooled, oil filling turning is necessary, and so-called turning is to rotate motor several rounds by manpower before starting motor, to judge whether load (i.e. mechanical or transmission part) driven by motor has the situation of increased resistance caused by jamming, so that starting load of motor is not increased to damage motor (i.e. burn out).

[0003] However, turning of steam turbine after shutdown mainly relies on oil pump, and it is a common risk that unit cannot be turned after shutdown due to failure of oil pump to start normally, at this time, staff needs to check reasons of failure of turning one by one, so that not only the workload of staff is increased, but also the normal use of steam turbine is affected, but emergency turning of steam turbine under the condition of failure of oil pump to operate is very harmful to unit. CONTENT OF UTILITY MODEL

[0004] In view of the defects of prior art, the utility model provides a portable steam turbine emergency turning device, which has the advantages of facilitating the movement of the emergency turning device, preventing the device from colliding with the ground by adjusting the height of the emergency turning device according to the actual height of the staff, and improving the practicability of the emergency turning device, solving the problems raised in the above background art.

[0005] The utility model provides the following technical scheme: a kind of portable steam turbine emergency turning device, including electric pressure test pump, the right side pipeline of electric pressure test pump is connected with energy accumulator, the side of energy accumulator away from electric pressure test pump is connected with pressure gauge by electric wire, the back end of pressure gauge is fixedly installed with digital pressure controller, the lower end of pressure gauge is fixedly connected with air switch located in the right side of pressure gauge, the front of air switch is provided with contactor, the lower of contactor is fixedly installed with bracket, and the upper end surface of bracket and the lower end of energy accumulator are fixedly connected by bolt, the upper of bracket movably installs handrail, the contactor is externally connected with electromagnetic valve by electric wire, and electromagnetic valve is connected with ball valve by pipeline, the ball valve is connected with energy accumulator by rubber hose.

[0006] Preferably, the right side of the upper end surface of the bracket is fixedly provided with a mounting plate, the right side of the mounting plate is connected with the air switch and the contactor through bolts, the left and right sides of the upper end surface of the bracket are fixedly provided with stand columns, the front and back sides of the upper end surface of the bracket are fixedly connected with pull rods, the upper end surface of the bracket is fixedly provided with a clamping block on the left side of the pull rod, and the inside of the clamping block is movably connected with the outside of the electric pressure test pump.

[0007] Preferably, the outer wall of the handrail is fixedly sleeved with a non-slip pad, the lower end of the handrail is movably sleeved with a connecting assembly, and one end, away from the non-slip pad, of the connecting assembly is threadedly connected with the upper end of the stand column.

[0008] Preferably, the left side of the stand column is fixedly provided with a supporting rod, one end, away from the stand column, of the supporting rod is fixedly connected with the upper end surface of the bracket, and the upper end surface of the stand column is provided with a cylindrical groove at the position of the mounting connecting assembly.

[0009] Preferably, the connecting assembly comprises a rotating rod, the upper end of the rotating rod is rotationally connected with the lower end of the handrail, one end, away from the handrail, of the rotating rod is fixedly provided with a disc, and the lower end of the disc is fixedly connected with a threaded rod in the inside of the cylindrical groove.

[0010] Preferably, the inner wall of the cylindrical groove is provided with threads, the inner wall of the cylindrical groove is threadedly sleeved with the outer wall of the threaded rod, and the outer wall of the threaded rod is provided with threads corresponding to the inner wall of the cylindrical groove.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The utility model discloses a kind of emergency turning devices, including electric pressure test pump, accumulator, air switch and contactor, the electric pressure test pump is connected with the accumulator, the accumulator is connected with the air switch and the contactor, the air switch is connected with the contactor.

[0013] 2. The utility model discloses a kind of emergency turning devices, including bracket, handrail, connecting assembly and stand column, the bracket is connected with the handrail, the handrail is connected with the connecting assembly, and the connecting assembly is connected with the stand column. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of the utility model;

[0015] Figure 2 is a rear view of the mounting plate of the utility model;

[0016] Figure 3 is a top view of the energy accumulator of the utility model;

[0017] Figure 4 is a side view of the anti-skid pad of the utility model;

[0018] Figure 5 is a side view of the connecting assembly of the utility model;

[0019] Figure 6 is an enlarged view of A of the utility model. Figure 4

[0020] In the figure: 1, electric pressure test pump; 2, energy accumulator; 3, pressure gauge; 4, digital pressure controller; 5, air switch; 6, contactor; 7, bracket; 8, handrail; 9, mounting plate; 10, stand column; 11, pull rod; 12, clamping block; 13, anti-skid pad; 14, connecting assembly; 141, rotating rod; 142, disc; 143, threaded rod; 15, support rod; 16, cylindrical groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figure 1 and Figure 4 ​The utility model provides a portable steam turbine emergency turning gear, including electric pressure test pump 1, the right side pipeline of electric pressure test pump 1 is connected with energy accumulator 2, and the turning gear miniaturization contradiction difficult is solved in the form of energy accumulator 2, the side of energy accumulator 2 away from electric pressure test pump 1 is connected with pressure gauge 3 through electric wire, and the rear end of pressure gauge 3 is fixedly installed with digital pressure controller 4, the lower end of pressure gauge 3 is fixedly connected with air switch 5 located at the right side of pressure gauge 3, and the front of air switch 5 is provided with contactor 6, and the lower of contactor 6 is fixedly installed with bracket 7, and the upper end surface of bracket 7 is fixedly connected with the lower end of energy accumulator 2 through bolt, and the upper of bracket 7 movably installs handrail 8, and contactor 6 is externally connected with electromagnetic valve through electric wire, and the electromagnetic valve is connected with ball valve through pipeline, and ball valve is connected with energy accumulator 2 through rubber hose, when emergency turning gear is put into operation, through digital pressure controller 4 setting turning oil pressure value 0-6Mpa adjustable, turning rate setting interval is wide, and after simple change of external interface, it can be adapted to different types steam turbine emergency turning needs, and synchronous setting energy accumulator 2 re-filling oil pressure value, when emergency turning gear is put into operation, through the opening of ball valve, the automatic control of hydraulic oil supply, stop of energy accumulator 2 by electromagnetic valve, the continuous oil supply of electric pressure test pump 1 to energy accumulator 2, and the control of oil circuit on-off according to the pressure value of digital pressure controller 4 received by electromagnetic valve, finally realize the continuous turning of unit, wherein, the size of turning rate is determined by the set turning oil pressure and the oil pressure of energy accumulator 2.

[0023] The right side of the upper end surface of the bracket 7 is fixedly installed with a mounting plate 9, and the right side of the mounting plate 9 is connected with the air switch 5 and the contactor 6 through bolts. The bolts are provided to connect the mounting plate 9 with the air switch 5 and the contactor 6. By changing the connection mode of the bolts, the mounting plate 9, the air switch 5 and the contactor 6, the air switch 5 and the contactor 6 can be disassembled or installed. The left and right sides of the upper end surface of the bracket 7 are fixedly installed with vertical columns 10. The front and rear sides of the upper end surface of the bracket 7 are fixedly connected with pull rods 11. The upper end surface of the bracket 7 is fixedly installed with a clamping block 12 located to the left of the pull rod 11. The inside of the clamping block 12 is movably connected with the outside of the electric pressure test pump 1. The clamping block 12 limits the installation position of the electric pressure test pump 1 on the bracket 7 and also reinforces the electric pressure test pump 1.

[0024] Please refer to Figure 2 and Figure 3 The outer wall of the handrail 8 is fixedly sleeved with a non-slip pad 13. The non-slip pad 13 increases the friction force between the handrail 8 and the contact surface of the hand of the worker. The lower end of the handrail 8 is movably sleeved with a connecting assembly 14. One end of the connecting assembly 14 away from the non-slip pad 13 is threadedly connected with the upper end of the vertical column 10. The installation of the connecting assembly 14 connects the handrail 8 with the vertical column 10.

[0025] The left side of the column 10 is fixedly installed with a support rod 15, and the end of the support rod 15 away from the column 10 is fixedly connected with the upper end surface of the bracket 7. The upper end surface of the column 10 is provided with a cylindrical groove 16 located at the installation connecting assembly 14. The cylindrical groove 16 is provided to provide space for the installation of the connecting assembly 14.

[0026] Please refer to Figure 6 With Figure 5 The connecting assembly 14 includes a rotating rod 141, the upper end of the rotating rod 141 is rotationally connected with the lower end of the handrail 8, and the end of the rotating rod 141 away from the handrail 8 is fixedly installed with a disc 142. The lower end of the disc 142 is fixedly connected with a threaded rod 143 located inside the cylindrical groove 16.

[0027] The inner wall of the cylindrical groove 16 is provided with threads, the inner wall of the cylindrical groove 16 is threadedly sleeved with the outer wall of the threaded rod 143, and the outer wall of the threaded rod 143 is provided with threads corresponding to the inner wall of the cylindrical groove 16. The threaded sleeve connection mode enables the threaded rod 143 to rotate circumferentially while driving the vertical lifting movement thereof.

[0028] Working principle: in use, first, the height of the handrail 8 is adjusted according to the actual height of the worker. Due to the threaded sleeve connection mode between the outer wall of the threaded rod 143 and the inner wall of the cylindrical groove 16, the threaded rod 143 rotates circumferentially while driving the telescopic movement thereof in the vertical direction. The rotating rod 141 can rotate at the bottom of the handrail 8, so that the telescopic movement of the threaded rod 143 changes the height of the handrail 8, preventing the worker from colliding with the ground when picking up the emergency disc wheel device due to the excessive length of the handrail 8. Then, the worker holds the non-slip pad 13, and the setting of the non-slip pad 13 increases the friction between the worker's hand and the handrail 8, moves the emergency disc wheel device to the required position, and finally, before the emergency disc wheel device is put into operation, the digital pressure controller 4 is set to the disc wheel oil pressure value of 0-6Mpa, and the accumulator 2 is simultaneously set to the oil filling oil pressure value. When the emergency disc wheel device is put into operation, the ball valve is manually opened, the electromagnetic valve automatically controls the supply and stop of the hydraulic oil in the accumulator 2, the electric pressure pump 1 continuously supplies oil to the accumulator 2, and the electromagnetic valve controls the oil path according to the received pressure value of the digital pressure controller 4. Ultimately, the unit is continuously disc-wheeled, and the size of the disc wheel rate is determined by the set disc wheel oil pressure and the accumulator 2 filling oil pressure.

[0029] It is to be noted that, in the present text, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. In the drawings of the present application, the filling patterns are only for distinguishing layers and do not have any other limitations.

[0030] While the embodiments of the present application have been shown and described, it is to be understood that the embodiments can be varied, modified, substituted and changed by those skilled in the art without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A portable emergency turning gear for steam turbines, comprising an electric pressure test pump (1), characterized in that: The right side pipeline of the electric pressure test pump (1) is connected with an energy accumulator (2), the side far from the electric pressure test pump (1) of the energy accumulator (2) is connected with a pressure gauge (3) through an electric wire, the rear end of the pressure gauge (3) is fixedly installed with a digital pressure controller (4), the lower end of the pressure gauge (3) is fixedly connected with an air switch (5) located at the right side of the pressure gauge (3), the front of the air switch (5) is provided with a contactor (6), the lower portion of the contactor (6) is fixedly installed with a bracket (7), and the upper end surface of the bracket (7) is fixedly connected with the lower end of the energy accumulator (2) through bolts, the upper portion of the bracket (7) is movably installed with a handrail (8), the contactor (6) is externally connected with a solenoid valve through an electric wire, and the solenoid valve is connected with a ball valve through a pipeline, and the ball valve is connected with the energy accumulator (2) through a rubber hose.

2. A portable emergency turning gear for steam turbines according to claim 1, characterized in that: The right side of the upper end surface of the bracket (7) is fixedly installed with a mounting plate (9), and the right side of the mounting plate (9) is connected with the air switch (5) and the contactor (6) through bolts, the left and right sides of the upper end surface of the bracket (7) are both fixedly installed with a stand column (10), the front and rear sides of the upper end surface of the bracket (7) are both fixedly connected with a pull rod (11), the upper end surface of the bracket (7) is fixedly installed with a clamping block (12) located at the left side of the pull rod (11), and the inside of the clamping block (12) is movably connected with the outside of the electric pressure test pump (1).

3. A portable emergency turbo-set turning gear as claimed in claim 2 wherein: The outer wall of the handrail (8) is fixedly sleeved with an antiskid pad (13), the lower end of the handrail (8) is movably sleeved with a connecting assembly (14), and one end of the connecting assembly (14) away from the antiskid pad (13) is threadedly connected with the upper end of the stand column (10).

4. A portable emergency turbo-set turning gear as claimed in claim 3 wherein: The left side of the stand column (10) is fixedly installed with a supporting rod (15), and the end of the supporting rod (15) away from the stand column (10) is fixedly connected with the upper end surface of the bracket (7), and the upper end surface of the stand column (10) is provided with a cylindrical groove (16) located at the mounting connecting assembly (14).

5. A portable emergency turbo-set turning gear as claimed in claim 4 wherein: The connecting assembly (14) comprises a rotating rod (141), the upper end of the rotating rod (141) is rotatably connected with the lower end of the handrail (8), the end of the rotating rod (141) away from the handrail (8) is fixedly installed with a disc (142), and the lower end of the disc (142) is fixedly connected with a threaded rod (143) located in the inside of the cylindrical groove (16).

6. A portable emergency turbo-set turning gear as claimed in claim 5 wherein: The inner wall of the cylindrical groove (16) is provided with threads, the inner wall of the cylindrical groove (16) is threadedly sleeved with the outer wall of the threaded rod (143), and the outer wall of the threaded rod (143) is provided with threads corresponding to the inner wall of the cylindrical groove (16).

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