Conical ring mounting structure and method suitable for 10MW-150MW generator

Abstract

The invention relates to a cone ring installation structure and method suitable for a 10-150 MW generator, and belongs to the technical field of steam turbine generators, the cone ring installation structure is of a ground bearing type structure, the cone ring installation structure comprises a stand column, a mechanical arm main machine and a clamp structure, the stand column is provided with the mechanical arm main machine, the mechanical arm main machine comprises two mechanical arm joints capable of rotating by 360 degrees, and the lower end of the mechanical arm main machine is connected with the clamp structure; and the conical ring is quickly butted and fixed by using a quick connector on the clamp structure. The operation mode of cone ring assembly is changed into mechanical operation from manual operation, manpower resources are saved, and the assembly precision and the operation efficiency are greatly improved.

Description

Technical Field

[0001] The invention relates to a cone ring installation structure suitable for a 10MW-150MW generator and a use method thereof, belonging to the technical field of steam turbine generators. Background Art

[0002] Cone ring assembly is an important step in the inner stator assembly. The accuracy of the cone ring assembly position is related to the load-bearing state of the stator coil end on the cone ring, and is closely related to the insulation quality and service life.

[0003] like Figure 1 As shown in the figure, the cone ring is mainly composed of an inner support ring 4-1, a bracket 4-2, an outer support ring 4-3, a connecting line 4-4 and other components. The cone ring of the 10MW~150MW series generator weighs between 300kg and 1000kg. When installing the cone ring, a special lifting device must be installed on the cone ring first, and then the cone ring is hoisted by connecting the special lifting device with a wire rope, such as Figure 2 shown.

[0004] During the installation process, there are requirements for the verticality of the cone ring, and there are also requirements for the position of the cone ring in the circumferential radial orientation. However, the above position adjustment cannot be implemented by crane hoisting, and a manual hand winch is required to adjust the verticality, and multiple people need to manually rotate the cone ring to adjust the circumferential radial position. As a result, the current cone ring assembly not only occupies crane resources for a long time, but also requires multiple people to operate, and there are potential risks of climbing to control the hand winch, which is not conducive to the efficiency, cost, safety and other aspects of generator production. Therefore, this technical field is in urgent need of a new cone ring installation structure and method to realize the cone ring assembly of 10MW~150MW generators; and this new structure and method can transform the cone ring assembly from crane operation to ground operation. Summary of the invention

[0005] The technical problem to be solved by the present invention is to transform the cone ring assembly from a crane hoisting operation to a ground bearing operation, and to realize the mechanized adjustment of the cone ring's verticality and circumferential radial position, and to be equipped with power failure insurance measures.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention provides a cone ring installation structure suitable for 10MW~150MW generators, which is a ground-bearing structure, including a column, a robotic arm host, and a clamp structure. The robotic arm host is installed on the column. The robotic arm host includes two robotic arm joints that can rotate 360°. The lower end of the robotic arm host is connected to the clamp structure, and the cone ring is quickly docked and fixed using the quick connector on the clamp structure.

[0007] Preferably, the columns are located in a placement area planned in advance.

[0008] Preferably, a counterweight block is provided at the bottom of the column.

[0009] Preferably, the clamp structure comprises a cylinder driving device, a first clamp, and a second clamp which are connected in sequence.

[0010] Preferably, the cylinder driving device can realize 90° axial flipping and 360° circumferential radial rotation of the first clamp.

[0011] Preferably, the clamp structure is provided with a clamp frame and a second quick connector to achieve quick docking and fixation between the first clamp and the cone ring, and can be universally applicable to cone rings of different structures and sizes.

[0012] Preferably, the control panel is provided with control buttons corresponding to the entire operation process of installing the cone ring.

[0013] The technical solution of the present invention also provides a cone ring installation method suitable for 10MW to 150MW generators, comprising the following steps:

[0014] Step 1: Divide the inner stator placement area, the cone ring placement area, and the mounting structure placement area;

[0015] Step 2: Hanging the inner stator and the cone ring to the above-mentioned designated area;

[0016] Step 3: Place the counterweight block in the designated area, and install the column, the robot arm host, and the fixture structure;

[0017] Step 4: Turn on the air source device, use the control keys on the control panel to lift and move the robot arm host, and simultaneously drive the fixture structure to move above the cone ring, dock the second fixture with the cone ring, and connect and fix them through the second quick connector;

[0018] Step 5: Use the control keys on the control panel to first lift the cone ring to a certain height, and then use the control keys to control the cone ring to flip 90 degrees;

[0019] Step 6: Control the robot arm mainframe to drive the cone ring to move close to the end surface of the inner stator, and make the center of the cone ring substantially consistent with the axis of the inner stator;

[0020] Step 7: Control the first fixture to synchronously drive the cone ring to rotate in the circumferential and radial directions to meet the circumferential and radial position requirements, confirm the installation position of the cone ring, and lock the entire cone ring installation structure;

[0021] Step 8: Use a connecting component to fix the cone ring to the end of the inner stator, loosen the connection between the second clamp and the cone ring, reset the robot arm to the minimum arm span state, lock the device and release the air source to complete the cone ring assembly operation.

[0022] In summary, the present invention includes the following beneficial technical effects:

[0023] The present invention finds a method to separate the cone ring assembly operation from crane lifting by adopting a ground bearing structure; realizes a 90° flipping of the cone ring by adopting a pneumatic flipping structure; realizes precise displacement of the cone ring in six free directions of up and down, left and right, front and back by adopting a pneumatic mechanical arm structure; realizes precise rotation of the cone ring in the circumferential radial direction by adopting a pneumatic rotating structure; and quickly completes the relative positioning of the cone ring and the inner stator.

[0024] The advantages of the present invention are: a new cone ring installation structure and method are adopted, and no crane lifting is required in the entire operation process, which completely releases driving resources; at the same time, the operation mode of turning over, centering, and circular radial rotation of the cone ring is changed from manual operation to mechanized operation, which saves human resources and greatly improves assembly accuracy and operation efficiency; and eliminates potential risk operations such as high-altitude hand winches. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the cone ring;

[0026] Figure 2 It is a schematic diagram of the traditional cone ring installation structure;

[0027] Figure 3 It is an overall schematic diagram of the cone ring installation structure of the present invention;

[0028] Figure 4 It is a schematic diagram of the clamp structure in the present invention;

[0029] Figure 5 This is a schematic diagram of the layout of the cone ring assembly site in the present invention;

[0030] Figure 6 It is a schematic diagram of the fixture docking and fixing the cone ring in the present invention;

[0031] Figure 7 It is a schematic diagram of the quick connector in the present invention;

[0032] Figure 8 It is a schematic diagram of positioning the cone ring to the inner stator in the present invention.

[0033] Figure markings: 1. column; 2. robot arm main unit; 3. fixture structure; 3-2. cylinder drive device; 3-3. first fixture; 3-3-2. first quick connector; 3-4. second fixture; 3-4-1. fixture frame; 3-4-2. second quick connector; 3-5. control panel; 4. cone ring; 4-1. inner support ring; 4-2. bracket; 4-3. outer support ring; 4-4. connecting wire; 5. inner stator. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention provides a cone ring installation structure suitable for 10MW to 150MW generators. By adopting a ground bearing structure, the cone ring 4 assembly operation is separated from the crane lifting, and the pneumatic mechanical arm structure is used to quickly realize the precise displacement of the cone ring 4 in six free directions of up and down, left and right, front and back. By equipping the clamp structure 3 with a cylinder device, the clamp can be precisely controlled to turn over 90° in the axial direction and rotate in the circumference and radial direction. Figure 3 to Figure 8 As shown, it includes a column 1 (with a counterweight), a robot mainframe 2, and a fixture structure 3. The column 1 (with a counterweight) is located in a pre-planned placement area, and the robot mainframe 2 is installed on the column 1. The robot mainframe 2 is composed of two robot arm joints, and both joints can rotate 360 ​​degrees. The lower end of the robot mainframe 2 is connected to the fixture structure 3, and the cone ring 4 is quickly docked and fixed by using the second quick connector 3-4-2 on the second fixture 3-4.

[0036] The clamp structure 3 is provided with a cylinder drive device 3-2, which realizes the axial 90° flipping and circumferential radial 360° rotation of the first clamp 3-3. The clamp structure 3 is provided with a clamp frame 3-4-1 and a second quick connector 3-4-2, which realizes the quick docking and fixation of the first clamp 3-3 and the cone ring 4, and can be universally used for cone rings 4 of different structures and sizes. The control panel 3-5 is provided with control buttons corresponding to the entire operation process of installing the cone ring 4. From the second clamp 3-4 docking the cone ring 4 → the cone ring flips 90° → the cone ring 4 and the inner stator 5 are centered → the cone ring 4 rotates circumferentially and radially → the cone ring 4 is finally positioned, to achieve the cone ring 4 installation process with the best human-machine cooperation efficiency.

[0037] Preferably, a counterweight is installed at the lower end of the column 1, and the column 1 does not need to be connected and fixed to the foundation. A robot arm host 2 is installed at the upper end of the column 1, and can rotate 360 ​​degrees on the column 1.

[0038] Preferably, the robot arm host 2 is a pneumatic structure device, and the up and down displacement of the robot arm is controlled by pneumatic force; the robot arm is composed of two robot arm joints, which can rotate 360° relative to each other. The front and back and left and right displacements of the robot arm are driven manually and are equipped with a damping system. The damping size can be adjusted, and the current position can be pneumatically locked at any time by pressing a button.

[0039] Preferably, it also includes a clamp structure 3 connected to the lower end of the robot arm main body 2; the clamp structure 3 includes a rotating joint connected to the robot arm main body 2, a cylinder for controlling the angle flipping of the first clamp 3-3, a turntable for controlling the circumferential radial rotation of the first clamp 3-3, a second clamp 3-4 for docking the cone ring 4, and a control panel 3-5; the cone ring 4 is mechanized by using the buttons on the control panel 3-5.

[0040] Preferably, the cylinder has two locking protection measures: 1) The pneumatic cylinder has a pressure-maintaining function to ensure that the rotating shaft will not suddenly drop due to air pressure failure during the rotation process, and the remaining reserve gas can still enable the rotating shaft to continue to rotate. 2) A mechanical locking structure is provided in the pneumatic cylinder: a spring-tensioned piston device. The tensioning force of the spring device corresponds to the rated load of the robot arm host 2, and the initial state is the spring-tensioned state. Only when the air pressure in the pneumatic cylinder reaches a sufficient pressure will the spring tensioning device loosen. Once the air pressure in the pneumatic cylinder is reduced to a certain level, the spring tensioning device will immediately tighten the piston to ensure that the rotating shaft is in a locked state.

[0041] Preferably, the second clamp 3 - 4 for docking the cone ring 4 is in the form of a quick connector to achieve rapid fixation with the generator cone ring 4 .

[0042] The embodiment of the present invention further discloses a method for installing a cone ring 4 structure applicable to a 10MW to 150MW generator, which comprises the following steps:

[0043] Step 1: According to the arm span and telescopic range of the robot arm, combined with the outer dimensions of the inner stator 5 and the cone ring 4, three areas are divided, namely, the inner stator 5 placement area, the cone ring 4 placement area, and the installation structure placement area;

[0044] Step 2: Hang the inner stator 5 and the cone ring 4 to the above-mentioned designated area;

[0045] Step 3: Place the counterweight block in the above-mentioned designated area, and then hoist the entire cone ring 4 installation structure (including the column 1, the robot arm mainframe 2, and the fixture structure 3) assembled in advance onto the counterweight block in the designated area, and fasten the column 1 chassis and the counterweight block with bolts; or after placing the counterweight block, install the column 1, the robot arm mainframe 2, and the fixture structure 3 in sequence, specifically, install the robot arm mainframe 2 on the top of the column 1, and install the fixture structure 3 under the joint of the robot arm mainframe 2;

[0046] Step 4: Turn on the air source device, use the control keys on the control panel 3-5 to lift and move the robot arm main unit 2, and simultaneously drive the clamp structure 3 to move above the cone ring 4, dock the second clamp 3-4 with the cone ring 4, and connect and fix them through the second quick connector 3-4-2.

[0047] Step 5: Use the control keys on the control panel 3-5 to first lift the cone ring 4 to a certain height, and then use the control keys to control the cone ring 4 to flip 90 degrees;

[0048] Step 6: Control the robot arm host 2 to drive the cone ring 4 to move close to the end surface of the inner stator 5, and make the center of the cone ring 4 basically consistent with the axis of the inner stator 5;

[0049] Step 7: Operate the first fixture 3-3 to synchronously drive the cone ring 4 to rotate in the circumference and radial direction to meet the circumference and radial position requirements, confirm the installation position of the cone ring 4, and lock the entire cone ring 4 installation structure;

[0050] Step 8: Use the connecting parts to fix the cone ring 4 to the end of the inner stator 5, loosen the connection between the second clamp 3-4 and the cone ring 4, reset the robot arm to the minimum arm span state, lock the device and release the air source to complete the assembly of the cone ring 4.

[0051] Preferably, the cone ring 4 mounting structure is fixed on the counterweight block and placed in the designated area. The cone ring 4 is initially placed in a horizontal position to facilitate docking and fixation with the fixture. First, the cone ring 4 is flipped 90° from a horizontal state to a vertical state. Then the robot arm host 2 drives the cone ring 4 close to the end face of the inner stator 5 to determine the center position and axial spacing of the cone ring 4. Finally, the rotating fixture drives the cone ring 4 to meet the circumferential radial position requirements.

[0052] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cone ring mounting structure suitable for 10MW to 150MW generators, characterized in that: The invention is a ground-supported structure, comprising a column (1), a robot arm main unit (2), and a clamp structure (3); the robot arm main unit (2) is mounted on the column (1); the robot arm main unit (2) comprises two robot arm joints that can rotate 360 ​​degrees; the lower end of the robot arm main unit (2) is connected to the clamp structure (3); and a cone ring (4) is quickly docked and fixed by using a quick connector on the clamp structure (3).

2. The cone-ring mounting structure suitable for 10MW to 150MW generators according to claim 1, characterized in that: The column (1) is located in a placement area that has been planned in advance.

3. The cone-ring mounting structure suitable for 10MW to 150MW generators according to claim 1, characterized in that: A counterweight block is provided at the bottom of the column (1).

4. The cone-ring mounting structure suitable for 10MW to 150MW generators according to claim 1, characterized in that: The clamp structure (3) comprises a cylinder driving device (3-2), a first clamp (3-3), and a second clamp (3-4) which are connected in sequence.

5. The cone-ring mounting structure suitable for 10MW to 150MW generators according to claim 4, characterized in that: The cylinder driving device (3-2) can realize the first clamp (3-3) to flip 90 degrees in the axial direction and to rotate 360 ​​degrees in the circumferential radial direction.

6. The cone-ring mounting structure suitable for 10MW to 150MW generators according to claim 5, characterized in that: The clamp structure (3) is provided with a clamp frame (3-4-1) and a second quick connector (3-4-2), which realizes the quick docking and fixing of the first clamp (3-3) and the cone ring (4), and can be universally used for cone rings (4) of different structures and sizes.

7. The cone-ring mounting structure suitable for 10MW to 150MW generators according to claim 6, characterized in that: The control panel (3-5) is provided with control buttons corresponding to the entire operation process of installing the cone ring (4).

8. The installation method of a cone-ring installation structure suitable for 10MW to 150MW generators according to claim 7, characterized in that: The following steps are involved: Step 1: Divide the inner stator (5) placement area, the cone ring (4) placement area, and the mounting structure placement area; Step 2: Hanging the inner stator (5) and the cone ring (4) to the above-mentioned designated area; Step 3: placing the counterweight block in the designated area, and installing the column (1), the robot arm host (2), and the fixture structure (3); Step 4: Connect the air source device, use the control keys on the control panel (3-5) to lift and move the robot arm main unit (2), and simultaneously drive the clamp structure (3) to move above the cone ring (4), dock the second clamp (3-4) with the cone ring (4), and connect and fix them through the second quick connector (3-4-2). Step 5: Use the control keys on the control panel (3-5) to first lift the cone ring (4) to a certain height, and then use the control keys to control the cone ring (4) to flip 90 degrees; Step 6: Control the robot arm main unit (2) to drive the cone ring (4) to move close to the end surface of the inner stator (5), and make the center of the cone ring (4) basically consistent with the axis of the inner stator (5); Step 7: Control the first fixture (3-3) to synchronously drive the cone ring (4) to rotate in a circumferential and radial direction to meet the circumferential and radial position requirements, confirm the installation position of the cone ring (4), and lock the entire cone ring (4) installation structure; Step 8: Use a connecting component to fix the cone ring (4) to the end of the inner stator (5), loosen the connection between the second clamp (3-4) and the cone ring (4), reset the robot arm to the minimum arm span state, lock the device and release the air source, and complete the assembly operation of the cone ring (4).

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