A low speed hydraulic assist disc engine starting device for power generation engine accidents

Abstract

The application discloses a low-speed hydraulic assisting disc wheel turning device for power generation engine accidents, and relates to the technical field of engine maintenance. The embedded toothed structure and the assembled gear are meshed to stably drive the intermediate shaft to keep low-speed rotation, so that the stop of the shaft body is avoided to prevent the aggravation of the fault. The first telescopic transmission structure and the first hydraulic drive assembly are used in cooperation with the hydraulic motor to realize automatic assisting and driving, and the second telescopic transmission structure and the second hydraulic drive assembly are used in cooperation with the rotating part to realize manual assisting and driving, so that the device can be flexibly adapted to different accident scenes. In addition, the hydraulic oil purification and defoaming assembly at the bottom is used to ensure the cleanliness and stability of the hydraulic oil, thereby improving the reliability and adaptability of the device in the engine accidents. The device provides stable disc wheel turning support for the fault relief and subsequent maintenance after the engine accident, and solves the problems of the lack of automatic and manual double driving adaptation capability of the traditional disc wheel turning device, the difficulty in coping with complex accident scenes, and the influence of oil pollution and air bubbles on the operation stability of the hydraulic drive system.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of gas turbine operation and maintenance, in particular to a low-speed hydraulic power-assisted turning gear for power generation gas turbine accidents. BACKGROUND

[0002] The existing power-assisted turning gear is an auxiliary device for driving the shaft system of various rotating machinery (such as steam turbines, gas turbines, generators, etc.) to rotate at low speed before shutdown for maintenance, fault handling or startup. Its core function is to prevent thermal deformation and bending of the shaft system due to long-term static state, or to maintain low-speed operation of the shaft system after equipment failure to alleviate fault deterioration.

[0003] When a power generation gas turbine accident occurs, the intermediate shaft is prone to stop rotating due to the loss of stable driving, which in turn leads to the deterioration of the gas turbine failure. However, the existing conventional turning gear lacks automatic and manual dual-drive adaptation capability, making it difficult to cope with complex accident scenarios, and the oil used in the hydraulic drive system is prone to contamination or gas bubbles affecting the stability of operation. SUMMARY

[0004] To overcome the shortcomings of the prior art, the present application provides a low-speed hydraulic power-assisted turning gear for power generation gas turbine accidents, which solves the problem of the lack of automatic and manual dual-drive adaptation capability of the existing conventional turning gear, the difficulty in coping with complex accident scenarios, and the problem of the oil used in the hydraulic drive system being prone to contamination or gas bubbles affecting the stability of operation.

[0005] To achieve the above purpose, the present application realizes the following technical scheme: a low-speed hydraulic power-assisted turning gear for power generation gas turbine accidents, comprising a support frame, wherein an embedded tooth engagement structure is arranged on the support frame, and a split type gear is fixedly connected to the intermediate shaft, and the embedded tooth engagement structure is used to engage with the split type gear when driving the intermediate shaft to rotate;

[0006] A rotatable driving sprocket is arranged on the support frame, and tooth groove plates are fixedly connected to both sides of the driving sprocket;

[0007] A hydraulic motor is arranged on the support frame, and a first telescopic transmission structure is arranged through a gear reduction box, and when automatic power-assisted turning is performed through the hydraulic motor, a first hydraulic drive assembly connected to the first telescopic transmission structure is used to connect the first telescopic transmission structure and one side of the tooth groove plate;

[0008] A rotating member is arranged on the support frame, and a second telescopic transmission structure is arranged in the rotating member, and when manual power-assisted turning is performed through the rotating member, a second hydraulic drive assembly connected to the second telescopic transmission structure is used to connect the second telescopic transmission structure and the other side of the tooth groove plate;

[0009] A hydraulic oil purification and defoaming assembly is arranged at the bottom of the support frame.

[0010] Further, the support frame is also provided with a tension chain gear through a screw telescopic structure, the driving chain gear, the tension chain gear and the embedded gear meshing structure are connected through a chain;

[0011] The surface of the hydraulic motor is fixedly connected with a radiator.

[0012] Further, the embedded gear meshing structure includes a driven chain gear connected with the support frame through a connecting bearing, and the driven chain gear is connected with the chain;

[0013] The electric telescopic push rod is fixedly connected with the driven chain gear through a fixed block, the end of the electric telescopic push rod is provided with a tooth block through a compression spring, the top of the tooth block is provided with an inner groove, and the end of the output shaft of the electric telescopic push rod extends into the inner groove;

[0014] The assembled gear includes two symmetrical half-ring tooth rings, the two half-ring tooth rings are fixed on the intermediate shaft through screws, and the tooth block is engaged with the half-ring tooth ring.

[0015] Further, the first telescopic transmission structure includes a rotating shaft and a first meshing tooth plate fixed at one end of the rotating shaft, when the hydraulic motor is used for automatic power-assisted turning, the first meshing tooth plate is connected with the tooth groove plate on one side;

[0016] The other end of the rotating shaft is fixedly connected with a transmission frame, the surface of the transmission frame movably sleeves a T-shaped piece, the T-shaped piece is fixedly connected with the gear reduction box output shaft, and the surface of the transmission frame is provided with a guide rod movably penetrating the T-shaped piece;

[0017] The support frame is fixedly connected with a liquid storage shell, the liquid storage shell is sleeved in the rotating shaft, the surface of the rotating shaft is fixedly connected with a pressure bearing ring, and the pressure bearing ring is connected with the inside of the liquid storage shell through a sealing ring;

[0018] The surface of the rotating shaft sleeves a first reset spring, and the two ends of the first reset spring are respectively connected with the pressure bearing ring and the inner side wall of the liquid storage shell;

[0019] The first hydraulic drive assembly is arranged on the liquid storage shell, and is used for injecting hydraulic oil into the inside of the liquid storage shell or discharging the hydraulic oil in the inside of the liquid storage shell.

[0020] Further, the liquid storage shell includes two symmetrical liquid storage pieces, one of the liquid storage pieces is fixedly connected with the support frame, and the other is fixedly connected with the support frame through screws, and a sealing rubber strip is arranged between the two liquid storage pieces;

[0021] The first hydraulic drive assembly includes two hydraulic oil valves, which are respectively fixed on the two liquid storage pieces;

[0022] The hydraulic oil valve comprises a valve body, an injection cavity and a pressure maintaining cavity are arranged in the valve body, the injection cavity and the pressure maintaining cavity are communicated through an inclined hole, and the injection cavity and the pressure maintaining cavity are communicated with the inside of a liquid storage member;

[0023] An oil discharging pipe extends outward in the inside of the pressure maintaining cavity;

[0024] A first pulling spring is arranged in the inside of the injection cavity, a first T-shaped rod fixedly connected with one end of the first pulling spring is arranged in the inside of the injection cavity, a first spherical body is fixedly connected with the end of the first T-shaped rod, and the first spherical body is connected with the inner side wall of the injection cavity from the outside of the injection cavity;

[0025] A second pulling spring is arranged in the inside of the pressure maintaining cavity, a second T-shaped rod fixedly connected with one end of the second pulling spring is arranged in the inside of the pressure maintaining cavity, a second spherical body is fixedly connected with the end of the second T-shaped rod, and the second spherical body is connected with the inner side wall of the pressure maintaining cavity from the inside of the pressure maintaining cavity.

[0026] Further, the rotating member comprises a rotating cylinder and a rotating rod, the rotating rod is fixedly connected to the surface of the rotating cylinder, and the rotating cylinder is movably connected to the support frame through a bearing;

[0027] The second telescopic transmission structure comprises a fixed table, the fixed table is movably connected to the inner side wall of the rotating cylinder through a sealing bearing, a guide cylinder is fixedly connected to the side close to the inside of the rotating cylinder, a T-shaped transmission member is movably connected in the inside of the guide cylinder, the T-shaped transmission member movably penetrates through the fixed table and is fixedly connected with the second meshing tooth plate;

[0028] A guide tooth column is fixedly connected to the inside of the rotating cylinder, a tooth groove is formed in the surface of the fixed table, the surface of the guide tooth column is movably connected to the inner side wall of the tooth groove, a second return spring is sleeved on the surface of the guide tooth column, and the two ends of the second return spring are movably connected to the surface of the fixed table and the inside of the rotating cylinder, respectively;

[0029] A brake cylinder is fixedly connected to the surface of the rotating cylinder, and a brake pad is fixedly connected to the surface of the support frame through an electric push rod;

[0030] The second hydraulic drive assembly is arranged on the fixed table.

[0031] Further, an oil inlet channel and an oil outlet channel are formed in the surface of the fixed table, the oil inlet channel and the oil outlet channel are communicated, and an oil outlet pipe is fixedly connected to the outlet of the oil outlet channel;

[0032] An oil stabilizing cavity is further formed in the surface of the fixed table, the oil outlet channel is communicated with the oil stabilizing cavity, and an electromagnetic valve is arranged at the outlet of the oil stabilizing cavity;

[0033] The second hydraulic driving assembly comprises a one-way valve fixedly connected at an inlet of the oil inlet channel, a third pull spring fixedly connected inside the pressure stabilizing cavity, a third T-shaped rod fixedly connected at an end of the third pull spring, and a plugging head fixedly connected at a bottom of the third T-shaped rod, with a surface of the plugging head movably connected with an inner side wall of the pressure stabilizing cavity.

[0034] Further, the hydraulic oil purification and defoaming assembly comprises an impurity filtering box and an impurity treatment box, the top of the impurity filtering box is provided with an oil return pipe connector, and the inside of the impurity filtering box is provided with an impurity filtering and removing structure for sending filtered impurities into the impurity treatment box, and the inside of the impurity treatment box is provided with a filter screen.

[0035] The impurity filtering box is connected with a defoaming box through a liquid pumping pipe, the surface of the liquid pumping pipe is provided with an ultrasonic bubble sensor, and the inside of the defoaming box is provided with a defoaming structure.

[0036] The surface of the defoaming box is fixedly connected with a liquid pumping pipe, one end of the liquid pumping pipe away from the defoaming box is fixedly connected with a liquid pumping pump, the liquid pumping pump is arranged inside a liquid storage tank, and the top of the liquid storage tank is provided with an oil feeding pipe connector.

[0037] The top of the liquid storage tank is provided with a first rotating motor, a rotating frame arranged inside the liquid storage tank is arranged on an output shaft of the first rotating motor, and the liquid storage tank is provided with an oil supplementing tank through an oil supplementing pipe.

[0038] Further, the impurity filtering and removing structure comprises a filter screen fixed inside the impurity filtering box, an electric cylinder fixedly connected at the top of the impurity filtering box, a suction pump assembly fixedly connected at an end of an output shaft of the electric cylinder, and a suction pipe fixedly connected with the suction pump assembly, the suction pipe fixedly penetrating the impurity filtering box and connected with the impurity treatment box.

[0039] Further, the defoaming structure comprises a vacuum pump fixedly connected at the top of the defoaming box and in communication with the inside of the defoaming box.

[0040] The inside of the defoaming box is fixedly connected with a heating strip connected with a power supply assembly outside the defoaming box.

[0041] The surface of the defoaming box is fixedly connected with a rotating motor, and an output shaft of the rotating motor movably penetrates the defoaming box and is fixedly connected with a stirring frame.

[0042] The present application has the following beneficial effects:

[0043] The low-speed hydraulic assisting jigger device for power generation engine accidents can stably drive the intermediate shaft to keep low-speed rotation through the meshing of the embedded toothed structure and the assembled gear, avoids the aggravation of the fault caused by the stop of the shaft body, realizes the double driving mode of automatic assisting and rotating member manual assisting by means of the first telescopic transmission structure and the first hydraulic drive assembly cooperating with the hydraulic motor and the second telescopic transmission structure and the second hydraulic drive assembly, can flexibly adapt to different accident scenes, and guarantees the cleanliness and stability of the hydraulic oil by combining the hydraulic oil purification and defoaming assembly at the bottom, thereby improving the reliability and adaptability of the device in the engine accident, providing stable jigger support for the fault relief and subsequent maintenance after the engine accident, and solving the problems that the intermediate shaft is easily stopped due to the loss of stable driving when the power generation engine accident occurs, and the engine fault is deteriorated, the traditional jigger device lacks the automatic and manual double driving adaptation ability and is difficult to cope with complex accident scenes, and the oil used by the hydraulic drive system is easily polluted or contains bubbles to affect the operation stability.

[0044] Of course, it is not necessary for any product embodying the present application to achieve all of the above advantages simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0046] Figure 2 It is a schematic diagram of the structure of the brake cylinder of the present application.

[0047] Figure 3 It is a schematic diagram of the structure of the first return spring of the present application.

[0048] Figure 4 It is a schematic diagram of the structure of the present application Figure 3 It is an enlarged view of the structure at A of the present application.

[0049] Figure 5 It is a schematic diagram of the structure of the tooth groove of the present application.

[0050] Figure 6 It is a schematic diagram of the structure of the injection cavity of the present application.

[0051] Figure 7 It is a schematic diagram of the structure of the tooth block of the present application.

[0052] Figure 8 It is a schematic diagram of the structure of the filter screen of the present application.

[0053] In the figure, 1, support frame; 2, assembled gear; 3, driving sprocket; 4, toothed plate; 5, hydraulic motor; 6, rotating part; 601, rotating cylinder; 602, rotating rod; 7, tension sprocket; 8, chain; 9, radiator; 10, driven sprocket; 11, electric telescopic push rod; 12, extrusion spring; 13, tooth block; 14, rotating shaft; 15, first occlusal tooth plate; 16, transmission frame; 17, T-shaped part; 18, pressure ring; 19, first return spring; 20, liquid storage part; 21, sealing rubber strip; 22, valve body; 23, injection cavity; 24, pressure maintaining cavity; 25, inclined hole; 26, oil discharge pipe; 27, first pulling spring; 28, first T-shaped rod; 29, first ball; 30, second pulling spring; 31, second T-shaped rod; 32, second ball; 33, fixed table; 34, guide cylinder; 35, T-shaped transmission part; 36, guide tooth column; 37, tooth groove; 38, second return spring; 39, brake cylinder; 40, brake pad; 41, oil inlet channel; 42, oil outlet channel; 43, oil outlet pipe; 44, pressure stabilizing cavity; 45, electromagnetic valve; 46, one-way valve; 47, third pulling spring; 48, third T-shaped rod; 49, plugging head; 50, impurity filtering box; 51, impurity treatment box; 52, liquid pumping pipe part; 53, defoaming box; 54, ultrasonic bubble sensor; 55, liquid pumping pipe; 56, liquid pumping pump; 57, liquid storage tank; 58, rotating frame; 59, oil supplementing tank; 60, filter screen; 61, electric air cylinder; 62, suction pump assembly; 63, suction pipe; 64, vacuum pump; 65, heating strip; 66, stirring frame; 67, second occlusal tooth plate. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0055] In the description of the present application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0056] Please refer to Figures 1-8The embodiment of the application provides a technical scheme: a low-speed hydraulic assistance turning gear device for a power generation gas turbine accident, which comprises a support frame 1, the support frame 1 is provided with an embedded tooth engagement structure, a split type gear 2 is fixedly connected to a middle shaft, and the embedded tooth engagement structure is used for engaging with the split type gear when the middle shaft is driven to rotate;

[0057] A rotatable driving sprocket 3 is arranged on the support frame 1, and the two sides of the driving sprocket 3 are fixedly connected with tooth groove plates 4;

[0058] A hydraulic motor 5 is arranged on the support frame 1, the hydraulic motor 5 is provided with a first telescopic transmission structure through a gear reduction box, when automatic assistance turning is performed through the hydraulic motor 5, a first hydraulic drive assembly connected with the first telescopic transmission structure is used to connect the first telescopic transmission structure with one side of the tooth groove plate 4;

[0059] A rotating part 6 is arranged on the support frame 1, the rotating part 6 is internally provided with a second telescopic transmission structure, when manual assistance turning is performed through the rotating part 6, a second hydraulic drive assembly connected with the second telescopic transmission structure is used to connect the second telescopic transmission structure with the other side of the tooth groove plate 4;

[0060] A hydraulic oil purification and defoaming assembly is arranged at the bottom of the support frame 1.

[0061] Specifically, the support frame 1 is further provided with a tension sprocket 7 through a screw telescopic structure, the driving sprocket 3, the tension sprocket 7 and the embedded tooth engagement structure are connected through a chain 8;

[0062] The surface of the hydraulic motor 5 is fixedly connected with a radiator 9.

[0063] In the embodiment, the hydraulic motor 5 is connected with a hydraulic oil supply module, the hydraulic motor 5 can be started through hydraulic oil, power transmission is realized, low-speed assistance is realized, and the radiator 9 can perform heat dissipation on the hydraulic motor 5 in the process that the hydraulic motor 5 delivers power.

[0064] The length of the screw telescopic structure can be adjusted according to the tightness of the chain 8, and the chain 8 is tensioned.

[0065] Specifically, the embedded tooth engagement structure comprises a driven sprocket 10, the driven sprocket 10 is connected with the support frame 1 through a connecting bearing, and the driven sprocket 10 is connected with the chain 8;

[0066] The driven sprocket 10 is fixedly connected with an electric telescopic push rod 11 through a fixed block, the end of the electric telescopic push rod 11 is provided with a tooth block 13 through a compression spring 12, the top of the tooth block 13 is provided with an inner groove, and the end of the output shaft of the electric telescopic push rod 11 extends into the inner groove;

[0067] The assembled gear 2 comprises two symmetrical half ring gears which are fixed on the intermediate shaft by screws, and the tooth block 13 is engaged with the half ring gears.

[0068] In the embodiment, when the turning engine fails, the intermediate shaft can continue to rotate at low speed to prevent the engine from deteriorating. The electric telescopic push rod 11 is extended to drive the tooth block 13 to move by pressing the spring 12, and the tooth block 13 gradually contacts the teeth on the half ring gear. Since the intermediate shaft has not stopped rotating, the half ring gear will press the tooth block 13, and the pressing spring 12 can avoid hard contact. When the tooth block 13 is completely engaged with the gear ring, the electric telescopic push rod 11 stops extending.

[0069] Through the action of the pressing spring 12, flexible contact can be achieved to prevent damage. Before the tooth block 13 contacts the half ring gear, the first telescopic transmission structure or the second telescopic transmission structure has contacted the tooth groove plate 4. After the tooth block 13 is completely engaged with the gear ring, the braking state contacts, and power transmission is performed in manual or automatic mode to make the intermediate shaft continue to rotate at low speed, preventing the intermediate shaft from stopping rotating and causing a thermal failure.

[0070] Specifically, the first telescopic transmission structure comprises a rotating shaft 14 and a first meshing tooth plate 15 fixed at one end of the rotating shaft 14. When the hydraulic motor 5 is used for automatic power-assisted turning, the first meshing tooth plate 15 is connected with the tooth groove plate 4 on one side;

[0071] The other end of the rotating shaft 14 is fixedly connected with a transmission frame 16, the surface of the transmission frame 16 movably sleeves a T-shaped piece 17, the T-shaped piece 17 is fixedly connected with the output shaft of the gear reduction box, and the surface of the transmission frame 16 is provided with a guide rod movably penetrating the T-shaped piece 17;

[0072] The support frame 1 is fixedly connected with a liquid storage shell, the liquid storage shell sleeves the inside of the rotating shaft 14, the surface of the rotating shaft 14 is fixedly connected with a pressure bearing ring 18, and the pressure bearing ring 18 is connected with the inside of the liquid storage shell through a sealing ring;

[0073] The surface of the rotating shaft 14 sleeves a first reset spring 19, and the two ends of the first reset spring 19 are respectively connected with the pressure bearing ring 18 and the inner side wall of the liquid storage shell.

[0074] The first hydraulic drive assembly is arranged on the liquid storage shell and is used for injecting hydraulic oil into the inside of the liquid storage shell or discharging the hydraulic oil in the inside of the liquid storage shell.

[0075] In this embodiment, when the power-assisted disc needs to be turned in the automatic mode, the first hydraulic drive assembly allows hydraulic oil to enter the inside of the liquid storage shell, so that the hydraulic oil extrudes the pressure ring 18, and the rotating shaft 14 drives the first meshing tooth plate 15 to move towards the direction of the tooth groove plate 4 under the action of the pressure ring 18. At this time, the first return spring 19 is stretched, and the sealing ring on the pressure ring 18 can play a sealing and leakage-proof role.

[0076] In the process of movement of the rotating shaft 14, the transmission frame 16 is driven to move, and the guide rod is movably penetrated through the T-shaped piece 17, which can play a guiding and limiting role. When the hydraulic motor drives the T-shaped piece 17 to rotate through the gear reduction box, the rotating shaft 14 can be driven to rotate the first meshing tooth plate 15 through the transmission frame 16 and the guide rod, so as to drive the driving sprocket 3 to rotate. The rotation speed of the intermediate shaft is detected by the intermediate shaft rotation speed detector, so that the rotation speed of the hydraulic motor when it is started can match the rotation speed of the intermediate shaft.

[0077] It should be noted that when power assistance is not needed or an unexpected situation occurs and power transmission needs to be interrupted, the first hydraulic drive assembly combined with the first return spring 19 can realize rapid oil discharge, so that the first meshing tooth plate 15 is quickly separated from the tooth groove plate 4.

[0078] Specifically, the liquid storage shell includes two symmetrical liquid storage pieces 20, one of which is fixedly connected with the support frame 1, and the other is fixedly connected with the support frame 1 through a screw. A sealing rubber strip 21 is arranged between the two liquid storage pieces 20. The first hydraulic drive assembly includes two hydraulic oil valves, which are respectively fixed on the two liquid storage pieces 20.

[0079] The form of the liquid storage shell formed by the upper and lower combination of the two liquid storage pieces 20 can realize the mode of convenient installation and disassembly and maintenance. The arrangement of two or more first hydraulic drive assemblies can realize rapid injection of hydraulic oil or rapid oil discharge, thereby ensuring the timeliness of the action.

[0080] The hydraulic oil valve includes a valve body 22, an injection cavity 23 and a pressure maintaining cavity 24 are arranged in the valve body 22, the injection cavity 23 and the pressure maintaining cavity 24 are communicated through an inclined hole 25, and the injection cavity 23 and the pressure maintaining cavity 24 are communicated with the inside of the liquid storage piece 20.

[0081] The pressure maintaining cavity 24 extends outwardly in the inside thereof;

[0082] The inside of the injection cavity 23 is provided with a first pulling spring 27, the inside of the injection cavity 23 is provided with a first T-shaped rod 28 fixedly connected with one end of the first pulling spring 27, the end of the first T-shaped rod 28 is fixedly connected with a first ball 29, and the first ball 29 is connected with the inner side wall of the injection cavity 23 from the outside of the injection cavity 23.

[0083] The inside of the pressure maintaining cavity 24 is provided with a second pulling spring 30, the inside of the pressure maintaining cavity 24 is provided with a second T-shaped rod 31 fixedly connected with one end of the second pulling spring 30, the end of the second T-shaped rod 31 is fixedly connected with a second ball 32, and the second ball 32 is connected with the inside wall of the pressure maintaining cavity 24 from the inside of the pressure maintaining cavity 24.

[0084] In the embodiment, in the stage of contacting the first occlusion tooth plate 15 with the tooth groove plate 4, the hydraulic oil first enters the injection cavity 23 of the valve body 22, and the hydraulic oil first enters the inside of the pressure maintaining cavity 24 through the inclined hole 25 to extrude the second T-shaped rod 31, so that the second pulling spring 30 is elongated, the second ball 32 is tightly attached to the inside wall of the pressure maintaining cavity 24, the occlusion is achieved, the hydraulic oil in the liquid storage part 20 is prevented from entering the inside of the pressure maintaining cavity 24, and the hydraulic oil in the inside of the pressure maintaining cavity 24 is also prevented from entering the inside of the liquid storage part 20.

[0085] With the continuous entering of the hydraulic oil, the pressure in the inside of the injection cavity 23 is increased, when the oil pressure in the injection cavity 23 is greater than the pulling force of the first pulling spring 27, the first T-shaped rod 28 moves, the second ball 32 is separated from the injection cavity 23, the hydraulic oil starts to enter the inside of the liquid storage part 20, the pressure bearing ring 18 on the rotating shaft 14 is extruded, so that the rotating shaft 14 drives the first occlusion tooth plate 15 to move, and the contact with the tooth groove plate 4 is achieved.

[0086] After the first occlusion tooth plate 15 contacts the tooth groove plate 4, the oil pressure in the inside of the liquid storage part 20 starts to increase, when the oil pressure is stable and the same as the pressure of the oil conveying pipeline, the first pulling spring 27 is reset, the first T-shaped rod 28 and the first ball 29 are driven to move, and the injection cavity 23 is closed.

[0087] When the power assistance is not needed or the power transmission needs to be interrupted due to an unexpected situation, the oil conveying pipeline does not maintain the pressure of the pressure maintaining cavity 24, the pressure returns to normal pressure, the second pulling spring 30 is contracted, the second T-shaped rod 31 drives the second ball 32 to separate from the inside wall of the pressure maintaining cavity 24, under the contraction force of the first reset spring 19, the hydraulic oil in the inside of the liquid storage part enters the pressure maintaining cavity 24 and is discharged through the oil discharging pipe 26, and enters the hydraulic oil purification and defoaming assembly through the oil return pipeline.

[0088] Specifically, the rotating part 6 includes a rotating cylinder 601 and a rotating rod 602, the rotating rod 602 is fixedly connected to the surface of the rotating cylinder 601, and the rotating cylinder 601 is movably connected with the support frame 1 through a bearing;

[0089] The second telescopic transmission structure comprises a fixed table 33 movably connected with the inner side wall of the rotating cylinder 601 through a sealing bearing, a guide cylinder 34 fixedly connected to the side close to the inside of the rotating cylinder 601, a T-shaped transmission piece 35 movably penetrating through the fixed table 33 and fixedly connected with the second meshing tooth plate 67, and the fixed table 33 is provided with a tooth groove 37 on the surface thereof.

[0090] The inside of the rotating cylinder 601 is fixedly connected with a guide tooth column 36, the surface of the guide tooth column 36 is movably connected with the inner side wall of the tooth groove 37, and the surface of the guide tooth column 36 is sleeved with a second return spring 38 movably connected with the surface of the fixed table 33 and the inside of the rotating cylinder 601.

[0091] The surface of the rotating cylinder 601 is fixedly connected with a brake cylinder 39, and the surface of the support frame 1 is fixedly connected with a brake pad 40 through an electric push rod.

[0092] The second hydraulic drive assembly is arranged on the fixed table 33.

[0093] In the embodiment, when manual assistance is needed, the first meshing tooth plate 15 is separated from the tooth groove plate 4. The inside of the rotating cylinder 601 is injected with hydraulic oil through the second hydraulic drive assembly, the T-shaped transmission piece 35 drives the second meshing tooth plate 67 to move and contact the tooth groove plate 4 under the action of the hydraulic oil, and the second return spring 38 is elongated. In this process, the guide tooth column 36 and the tooth groove 37 play a guiding and limiting role.

[0094] In order to prevent sudden rotation from causing injury to personnel, the rotating member 6 needs to be kept in a braking state before the tooth block 13 contacts the semi-ring tooth ring through the brake cylinder 39 and the brake pad 40 due to the action of the chain 8, so that the rotating member 6 rotates in advance.

[0095] When the tooth block 13 is in complete contact with the semi-ring tooth ring, the brake pad 40 is gradually loosened, the intermediate shaft is decelerated, and after the speed is reduced to a safe speed, the brake cylinder 39 and the brake pad 40 are separated, and manual assistance is started. However, if the rotating speed of the intermediate shaft is suddenly increased during manual assistance, the brake cylinder 39 and the brake pad 40 quickly contact to brake.

[0096] If the braking effect is not good, the second meshing tooth plate 67 is separated from the tooth groove plate 4 through the second hydraulic drive assembly to prevent the rotating member 6 from rotating and causing injury to personnel.

[0097] Specifically, the surface of the fixed table 33 is provided with an oil inlet channel 41 and an oil outlet channel 42, the oil inlet channel 41 and the oil outlet channel 42 are communicated, and the oil outlet channel 42 is fixedly connected with an oil outlet pipe 43 at the outlet thereof.

[0098] The surface of the fixing table 33 is also provided with a pressure stabilizing cavity 44, the oil outlet channel 42 is communicated with the pressure stabilizing cavity 44, and the outlet of the pressure stabilizing cavity 44 is provided with an electromagnetic valve 45;

[0099] The second hydraulic drive assembly comprises a one-way valve 46 fixedly connected at the inlet of the oil inlet channel 41, a third pull spring 47 fixedly connected inside the pressure stabilizing cavity 44, a third T-shaped rod 48 fixedly connected at the end of the third pull spring 47, and a plugging head 49 movably connected with the inner side wall of the pressure stabilizing cavity 44 and fixedly connected at the bottom of the third T-shaped rod 48.

[0100] In this embodiment, before the hydraulic oil is injected into the oil inlet channel 41 through the one-way valve 46, the hydraulic oil is first injected into the pressure stabilizing cavity 44 through the electromagnetic valve 45, so that the third T-shaped rod 48 drives the plugging head 49 to block the connection between the oil outlet channel 42 and the oil outlet channel 42, at this time the third pull spring 47 is in a stretched state, and then the electromagnetic valve is closed.

[0101] The hydraulic oil enters the inside of the rotating cylinder 601 through the one-way valve 46 and the oil inlet channel 41, so that the T-shaped transmission part 35 moves. When it is needed to make the second occlusal tooth plate 67 and the alveolar plate 4 out of contact, the electromagnetic valve 45 is opened, under the action of the third pull spring 47, the third T-shaped rod 48 and the plugging head 49 are reset, and the hydraulic oil is discharged through the oil outlet pipe 43.

[0102] Specifically, the hydraulic oil purification and defoaming assembly comprises a impurity filtering box 50 and a impurity treatment box 51, the top of the impurity filtering box 50 is provided with an oil return pipe connector, and the inside of the impurity filtering box 50 is provided with a impurity filtering and removing structure for sending the filtered impurities into the impurity treatment box 51, and the inside of the impurity treatment box 51 is provided with a filter screen;

[0103] The impurity filtering box 50 is connected with a defoaming box 53 through a liquid pumping pipe 52, the surface of the liquid pumping pipe 52 is provided with an ultrasonic bubble sensor 54, and the inside of the defoaming box 53 is provided with a defoaming structure;

[0104] The surface of the defoaming box 53 is fixedly connected with a liquid pumping pipe 55, one end of the liquid pumping pipe 55 away from the defoaming box 53 is fixedly connected with a liquid pumping pump 56, the liquid pumping pump 56 is arranged inside a liquid storage box 57, and the top of the liquid storage box 57 is provided with an oil feeding pipe connector;

[0105] The top of the liquid storage box 57 is provided with a first rotating motor, a rotating frame 58 placed inside the liquid storage box 57 is arranged on the output shaft of the first rotating motor, and the liquid storage box 57 is provided with a oil supplementing box 59 through an oil supplementing pipe.

[0106] In the embodiment, the liquid storage tank 57 supplies oil to the hydraulic oil supply module through the oil supply pipe connector, and the hydraulic oil supply module uniformly distributes the oil. The oil supplement tank 59 is used to supplement the hydraulic oil in the case of oil shortage. All the oil return pipelines are connected with the oil return pipe connector, and first pass through the impurity filter tank 50 for filtration, and then pass through the detection of the ultrasonic bubble sensor 54 to detect the content of the bubbles in the oil return. If the content of the bubbles exceeds the standard, the defoaming structure is used for defoaming.

[0107] It should be noted that the ultrasonic bubble sensor 54 can detect bubbles in the liquid suction pipe 52. If bubbles are detected, a signal can be sent to the control module through a preset communication mode. Then the control module controls the defoaming structure to start and defoams the hydraulic oil entering the defoaming tank 53.

[0108] The hydraulic oil is transported into the liquid storage tank 57 by the liquid suction pump 56 and the liquid suction pipe 55. The liquid suction pipe 55 is provided with heat dissipation fins for heat dissipation. The rotating frame 58 is arranged inside the liquid storage tank 57 to mix the hydraulic oil, so that the temperature can be neutralized to avoid local temperature difference.

[0109] Specifically, the impurity filtering and removing structure includes a filter screen 60 fixed inside the impurity filter tank 50. The top of the impurity filter tank 50 is fixedly connected with an electric cylinder 61. The end of the output shaft of the electric cylinder 61 is fixedly connected with a suction pump assembly 62. The suction pump assembly 62 is fixedly connected with a suction pipe 63. The suction pipe 63 is fixedly penetrated through the impurity filter tank 50 and connected with the impurity treatment tank 51.

[0110] In the embodiment, the filter screen 60 filters the impurities in the hydraulic oil, and the electric cylinder 61 drives the suction pump assembly 62 to reciprocate periodically, and the impurities are sent into the impurity filter tank 50 through the suction pipe 63 for impurity filtration.

[0111] Specifically, the defoaming structure includes a vacuum pump 64 fixedly connected to the top of the defoaming tank 53, and the vacuum pump 64 communicates with the inside of the defoaming tank 53.

[0112] The inside of the defoaming tank 53 is fixedly connected with a heating strip 65 connected with a power supply assembly outside the defoaming tank 53.

[0113] The surface of the defoaming tank 53 is fixedly connected with a rotating motor, and the output shaft of the rotating motor is movably penetrated through the defoaming tank 53 and fixedly connected with a stirring frame 66.

[0114] In this embodiment, when the ultrasonic bubble sensor 54 detects bubbles, bubble elimination is required, the vacuum pump 64 is started, and the liquid suction pipe 52 and the liquid suction pump 56 can be closed, or an electromagnetic valve can be arranged at the connection between the liquid suction pipe 52 and the liquid suction pipe 55 and the defoaming tank 53, so that the inlet and outlet of the defoaming tank 53 are closed, under the action of the vacuum pump 64, the pressure in the defoaming tank 53 decreases, the bubbles in the hydraulic oil float and are discharged, and the heating strip 65 and the stirring frame 66 are used to heat and stir, so that the free or dissolved gas in the hydraulic oil is discharged.

[0115] In general, when the automatic power-assisted turning mode is required, the hydraulic oil supply module first delivers the hydraulic oil delivered by the liquid storage tank 57 and the oil supplement tank 59 to the valve body 22 through the oil delivery pipeline branch, enters the injection cavity 23 first, enters the pressure maintaining cavity 24 through the inclined hole 25, and the pipeline connected by the oil discharge pipe 26 is closed. The valve can be closed, and the hydraulic oil discharged at this position is directly discharged into the impurity filter tank 50.

[0116] The second ball 32 blocks the pressure maintaining cavity 24, and then the hydraulic oil enters the liquid storage shell, so that the hydraulic oil presses the pressure bearing ring 18, so that the rotating shaft 14 moves, and the return spring 19 is pulled into the liquid storage shell. The pressure of the hydraulic oil entering the liquid storage shell is greater than the elastic force of the return spring 19, and the first engagement tooth plate 15 is engaged with the tooth groove plate 4. Then the electric telescopic push rod 11 drives the tooth block 13 to contact the assembled gear 2, and the oil pressure range supplied into the liquid storage shell is usually 3-8MPa. The specific value can be determined according to the elastic coefficient of the return spring 19 and the friction coefficient of the first engagement tooth plate 15 and the tooth groove plate 4, so that the first engagement tooth plate 15 and the tooth groove plate 4 are not completely separated during turning.

[0117] Finally, the hydraulic oil supply module delivers hydraulic oil into the hydraulic motor 5 through another oil delivery pipeline branch, drives the rotating shaft 14 to rotate, and drives the driving sprocket gear 3 to realize automatic turning. The oil pressure range supplied into the hydraulic motor 5 is usually 10-25MPa.

[0118] In the automatic power-assisted turning mode, if it is required to stop turning, first, the hydraulic oil is not supplied to the hydraulic motor 5, so that it stops rotating, then the second pulling spring 30 is retracted, the second ball 32 is separated from the inner wall of the pressure maintaining cavity 24, and the pipeline connected by the oil discharge pipe 26 is opened. The hydraulic oil enters the impurity filter tank 50, and then the other electric telescopic push rod drives the tooth block 13 to reset.

[0119] When the manual winding mode is needed, the hydraulic oil supply module supplies hydraulic oil to the one-way valve 46 through another oil pipeline branch, enters the inside of the rotating cylinder 601, extrudes the T-shaped transmission member 35, and makes the second engagement tooth plate 67 contact with the tooth groove plate 4. In addition, it is necessary to note that the inside of the pressure stabilizing cavity 44 is pre-filled with hydraulic oil by the hydraulic oil supply module and is closed by the electromagnetic valve 45, so that the pressure inside the pressure stabilizing cavity 44 is stable and greater than the pressure inside the rotating cylinder 601. The oil pressure range supplied into the rotating cylinder 601 is usually 2-6 MPa, or is consistent with the oil pressure range in the liquid storage shell, while the oil pressure range in the pressure stabilizing cavity 44 is higher than the oil pressure range in the rotating cylinder 601.

[0120] After the second engagement tooth plate 67 contacts with the tooth groove plate 4, the electric push rod connected with the brake pad 40 is started to make the brake pad 40 contact with the brake cylinder 39. Then the electric telescopic push rod 11 drives the tooth block 13 to contact with the assembled gear 2. At the same time when the electric telescopic push rod 11 cannot continue to move, the electric push rod connected with the brake pad 40 is gradually reset to gradually release the brake cylinder 39, preventing the rotating cylinder 601 from suddenly rotating.

[0121] When the winding needs to be stopped, the electric push rod connected with the brake pad 40 is started to extrude the brake cylinder 39 to achieve braking. When the rotating speed is 0, the electromagnetic valve 45 is opened, the hydraulic oil in the pressure stabilizing cavity 44 flows out and enters the impurity filtering box 50 through the oil return pipeline, at the same time, the third pulling spring 47 is contracted to move the blocking head 49, the hydraulic oil in the rotating cylinder 601 flows out through the oil outlet pipe 43 and enters the impurity filtering box 50 through the oil return pipeline, and after the second engagement tooth plate 67 is separated from the tooth groove plate 4, the electric push rod connected with the brake pad 40 is reset.

[0122] The hydraulic oil in the oil return pipeline enters from the side away from the defoaming box 53 of the impurity filtering box 50, the liquid suction pipe 52 sucks the hydraulic oil into the defoaming box 53, the filter screen 60 filters, the electric cylinder 61 is started regularly to drive the suction pump assembly 62 to reciprocate up and down, the impurities on the filter screen 60 are sent into the impurity treatment box 51 through the suction pipe 63. When the hydraulic oil in the defoaming box 53 reaches the set capacity and has been defoamed, the liquid suction pump 56 sucks the liquid.

[0123] It is necessary to note that in this document, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms “include”, “contain” or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0124] The preferred embodiments of the application disclosed above are only to help explain the present application. The preferred embodiments are not intended to be exhaustive or to limit the application to the precise form disclosed. Many modifications and variations are possible in light of this teaching. It is intended that the specification be considered as exemplary only with the factual recitations being merely intended to teach one skilled in the art how to make and use the best inventive embodiments. Since modifications will be obvious to those skilled in the art, the application is not to be limited to the precise embodiments, but can be freely modified by one of ordinary skill in the art with the scope and range of equivalents.

Claims

1. A low-speed hydraulically assisted turning gear device for use in power generation gas turbine accidents, characterized in that, Includes a support frame (1), on which an embedded gear engagement structure is provided, and an assembled gear (2) is fixedly connected to an intermediate shaft. The embedded gear engagement structure is used to mesh with the assembled gear when driving the intermediate shaft to rotate. The embedded gear structure includes a driven sprocket (10), which is connected to the support frame (1) via a connecting bearing and is connected to the chain (8); An electric telescopic push rod (11) is fixedly connected to the driven sprocket (10) by a fixing block. The end of the electric telescopic push rod (11) is provided with a tooth block (13) by a compression spring (12). The top of the tooth block (13) is provided with an inner groove. The end of the output shaft of the electric telescopic push rod (11) extends into the interior of the inner groove. The assembled gear (2) includes two symmetrical semi-annular toothed rings, which are fixed to the intermediate shaft by screws. The tooth block (13) meshes with the semi-annular toothed rings. The support frame (1) is provided with a rotatable drive chain gear (3), and toothed plates (4) are fixedly connected to both sides of the drive chain gear (3). The support frame (1) is provided with a hydraulic motor (5), and the hydraulic motor (5) is provided with a first telescopic transmission structure through a gear reducer. When the hydraulic motor (5) performs automatic power-assisted turning, the first telescopic transmission structure is connected to the toothed plate (4) on one side through the first hydraulic drive component connected to the first telescopic transmission structure. The support frame (1) is provided with a rotating part (6), and the rotating part (6) is provided with a second telescopic transmission structure. When the rotating part (6) is manually assisted to turn the wheel, the second telescopic transmission structure is connected to the toothed plate (4) on the other side by the second hydraulic drive assembly connected to the second telescopic transmission structure. The bottom of the support frame (1) is provided with a hydraulic oil purification and defoaming component.

2. The low-speed hydraulic power steering device for use in power generation gas turbine accidents according to claim 1, characterized in that: The support frame (1) is also provided with a tension chain gear (7) through a screw telescopic structure. The driving chain gear (3), the tension chain gear (7) and the embedded meshing structure are connected by a chain (8). A radiator (9) is fixedly connected to the surface of the hydraulic motor (5).

3. The low-speed hydraulic power steering device for use in power generation gas turbine accidents according to claim 1, characterized in that: The first telescopic transmission structure includes a rotating shaft (14) and a first engagement tooth plate (15) fixed at one end of the rotating shaft (14). When the hydraulic motor (5) is used for automatic assisted turning, the first engagement tooth plate (15) is connected to the toothed plate (4) on one side. The other end of the rotating shaft (14) is fixedly connected to a transmission frame (16), and a T-shaped piece (17) is movably sleeved on the surface of the transmission frame (16). The T-shaped piece (17) is fixedly connected to the output shaft of the gear reducer. A guide rod that movably passes through the T-shaped piece (17) is provided on the surface of the transmission frame (16). A liquid storage shell is fixedly connected to the support frame (1), the liquid storage shell is sleeved inside the rotating shaft (14), and a pressure bearing ring (18) is fixedly connected to the surface of the rotating shaft (14). The pressure bearing ring (18) is connected to the inside of the liquid storage shell through a sealing ring. A first return spring (19) is sleeved on the surface of the rotating shaft (14), and the two ends of the first return spring (19) are respectively connected to the pressure ring (18) and the inner wall of the liquid storage shell; The first hydraulic drive component is mounted on the reservoir and is used to inject hydraulic oil into or discharge hydraulic oil from the reservoir.

4. A low-speed hydraulically assisted turning gear device for use in power generation gas turbine accidents according to claim 3, characterized in that: The liquid storage shell includes two symmetrical liquid storage components (20), one of which is fixedly connected to the support frame (1), and the other is fixedly connected to it by screws. A sealing rubber strip (21) is provided between the two liquid storage components (20). The first hydraulic drive assembly includes two hydraulic valves, which are respectively fixed on two reservoirs (20); The hydraulic valve includes a valve body (22), and the valve body (22) is provided with an injection chamber (23) and a pressure holding chamber (24). The injection chamber (23) and the pressure holding chamber (24) are connected through an oblique hole (25). The injection chamber (23) and the pressure holding chamber (24) are both connected to the inside of the liquid reservoir (20). An oil unloading pipe (26) extends outward from the inside of the pressure holding chamber (24); The injection cavity (23) is provided with a first tension spring (27) inside, and a first T-shaped rod (28) is fixedly connected to one end of the first tension spring (27) inside the injection cavity (23). A first ball (29) is fixedly connected to the end of the first T-shaped rod (28). The first ball (29) is connected to the inner wall of the injection cavity (23) from the outside of the injection cavity (23). The pressure-holding cavity (24) is provided with a second tension spring (30) inside, and a second T-shaped rod (31) fixedly connected to one end of the second tension spring (30) inside the pressure-holding cavity (24). A second ball (32) is fixedly connected to the end of the second T-shaped rod (31), and the second ball (32) is connected to the inner wall of the pressure-holding cavity (24) from the inside of the pressure-holding cavity (24).

5. A low-speed hydraulically assisted turning gear device for use in power generation gas turbine accidents according to claim 1, characterized in that: The rotating component (6) includes a rotating cylinder (601) and a rotating rod (602). The rotating rod (602) is fixedly connected to the surface of the rotating cylinder (601). The rotating cylinder (601) is movably connected to the support frame (1) through a bearing. The second telescopic transmission structure includes a fixed platform (33), which is movably connected to the inner wall of the rotating cylinder (601) through a sealed bearing. A guide cylinder (34) is fixedly connected to the side of the fixed platform (33) near the inside of the rotating cylinder (601). A T-shaped transmission component (35) is movably connected inside the guide cylinder (34). The T-shaped transmission component (35) movably passes through the fixed platform (33) and is fixedly connected to the second meshing tooth plate (67). The rotating cylinder (601) is fixedly connected to the inside of a guide tooth column (36), and the surface of the fixed platform (33) is provided with a tooth groove (37). The surface of the guide tooth column (36) is movably connected to the inner side wall of the tooth groove (37). The surface of the guide tooth column (36) is sleeved with a second return spring (38), and the two ends of the second return spring (38) are movably connected to the surface of the fixed platform (33) and the inside of the rotating cylinder (601), respectively. A brake cylinder (39) is fixedly connected to the surface of the rotating cylinder (601), and a brake pad (40) is fixedly connected to the surface of the support frame (1) via an electric push rod. The second hydraulic drive assembly is mounted on a fixed platform (33).

6. A low-speed hydraulically assisted turning gear device for use in power generation gas turbine accidents according to claim 5, characterized in that: The surface of the fixed platform (33) is provided with an oil inlet channel (41) and an oil outlet channel (42), the oil inlet channel (41) and the oil outlet channel (42) are connected, and an oil outlet pipe (43) is fixedly connected to the outlet of the oil outlet channel (42); The surface of the fixed platform (33) is also provided with a pressure stabilizing chamber (44), the oil outlet channel (42) is connected to the pressure stabilizing chamber (44), and a solenoid valve (45) is provided at the outlet of the pressure stabilizing chamber (44). The second hydraulic drive assembly includes a check valve (46) which is fixedly connected to the inlet of the oil inlet channel (41). A third tension spring (47) is fixedly connected inside the pressure stabilizing chamber (44). A third T-shaped rod (48) is fixedly connected to the end of the third tension spring (47). A sealing head (49) is fixedly connected to the bottom of the third T-shaped rod (48). The surface of the sealing head (49) is movably connected to the inner wall of the pressure stabilizing chamber (44).

7. A low-speed hydraulically assisted turning gear device for use in power generation gas turbine accidents according to claim 1, characterized in that: The hydraulic oil purification and defoaming assembly includes an impurity filter box (50) and an impurity treatment box (51). The top of the impurity filter box (50) is provided with a return oil pipe connector, and the interior of the impurity filter box (50) is provided with an impurity filtration and removal structure for sending the filtered impurities into the impurity treatment box (51). The interior of the impurity treatment box (51) is provided with a filter screen. The impurity filter box (50) is connected to the defoaming box (53) through a liquid extraction pipe (52). An ultrasonic bubble sensor (54) is provided on the surface of the liquid extraction pipe (52), and a defoaming structure is provided inside the defoaming box (53). A liquid extraction pipe (55) is fixedly connected to the surface of the defoaming box (53). A liquid extraction pump (56) is fixedly connected to one end of the liquid extraction pipe (55) away from the defoaming box (53). The liquid extraction pump (56) is located inside the liquid storage tank (57). An oil delivery pipe connector is provided on the top of the liquid storage tank (57). The top of the liquid storage tank (57) is provided with a first rotating motor, and the output shaft of the first rotating motor is provided with a rotating frame (58) placed inside the liquid storage tank (57). The liquid storage tank (57) is provided with an oil replenishment tank (59) through an oil replenishment pipe.

8. A low-speed hydraulically assisted turning gear device for use in power generation gas turbine accidents according to claim 7, characterized in that: The impurity filtration and removal structure includes a filter screen (60), which is fixed inside the impurity filtration box (50). An electric cylinder (61) is fixedly connected to the top of the impurity filtration box (50). A suction pump assembly (62) is fixedly connected to the end of the output shaft of the electric cylinder (61). The suction pump assembly (62) is fixedly connected to a suction pipe (63). The suction pipe (63) is fixedly inserted through the impurity filtration box (50) and connected to the impurity treatment box (51).

9. A low-speed hydraulically assisted turning gear device for use in power generation gas turbine accidents according to claim 7, characterized in that: The defoaming structure includes a vacuum pump (64), which is fixedly connected to the top of the defoaming box (53) and is in communication with the interior of the defoaming box (53); A heating strip (65) is fixedly connected inside the defoaming box (53), and the heating strip (65) is connected to a power supply component outside the defoaming box (53); A rotating motor is fixedly connected to the surface of the defoaming box (53), and the output shaft of the rotating motor moves through the defoaming box (53) and is fixedly connected to the stirring rack (66).

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