Positioning conveying device, installation and use method of positioning conveying device

Abstract

An embodiment of the present application discloses a positioning and conveying device and a method for installing and using the positioning and conveying device. The positioning and conveying device includes a device fixing structure, a circumferential slot changing structure, and an axial entry and exit structure. The device fixing structure includes an annular frame, a support member, and a binding ring. The circumferential slot changing structure includes a circumferential docking bin, which is circumferentially slidable on the annular frame. The axial entry and exit structure includes an axial docking bin, which is axially slidable on the circumferential docking bin. The device fixing structure is fixed to the outer side of the guard ring or rotor of the generator through the support member. The axial entry and exit structure is used to enable the generator air gap detection equipment to enter or exit the generator, without the need for manual transportation of the generator air gap detection equipment, thereby alleviating the technical problem that the existing generator air gap detection equipment has difficulty entering the stator core tooth portion of the generator.

Description

Technical Field

[0001] The present application relates to the technical field of large generators, and in particular to a positioning and transmission device and a method for installing and using the positioning and transmission device. Background Art

[0002] Large generators are a core piece of equipment in power plants. The traditional method for testing the tightness of stator wedges involves tapping the wedges with a small hammer, and then making a qualitative assessment based on the sound and vibration. This requires manual entry into the stator chamber after removing the rotor. However, this process is time-consuming and labor-intensive, with high testing costs and a high risk of component damage. According to research and collection, relevant companies and research institutes both domestically and internationally are researching and developing intelligent thermal gap detection devices, aiming to detect stator wedge looseness, perform ELCID inspections, and visually inspect air gaps without removing the rotor. Market demand is also rapidly growing among domestic companies. In recent years, several power plants, including the Xiaoshan Power Plant, Daya Bay Nuclear Power Plant, and the Guotou Genting Meizhou Bay Power Plant, have announced service requirements for stator testing without removing the rotor.

[0003] Dongfang Electric has purchased an IRIS stator wedge looseness detection device and conducted extensive trials and tests. These trials and tests have shown that accurately delivering the IRIS stator wedge looseness detection device to the designated stator core tooth within the generator air gap is extremely difficult due to the device's lack of a delivery mechanism and the limited space within the generator's stator and rotor end structures. Furthermore, the device itself lacks circumferential slot-changing capabilities, making it unable to detect the tightness of the stator core end wedges. To facilitate the entry, exit, and recovery of the detection device from the designated stator core tooth, a positioning and delivery device is urgently needed that can both assist the detection device in detecting the end wedges and assist the detection device in slot-changing operations outside the air gap, thereby ensuring full coverage of the detection device's air gap inspections.

[0004] Therefore, the existing generator air gap detection equipment has a technical problem that it is difficult to enter the stator core teeth of the generator. Summary of the Invention

[0005] The embodiments of the present application provide a positioning and conveying device and a method for installing and using the positioning and conveying device, which can alleviate the technical problem that existing generator air gap detection equipment has difficulty in entering the stator core teeth of the generator.

[0006] An embodiment of the present application provides a positioning and conveying device, characterized in that it is used to convey a generator air gap detection device, comprising:

[0007] A device fixing structure, comprising an annular frame, a support member, and a binding ring, wherein the annular frame comprises a plurality of first connection holes arranged along the circumference, one end of the support member is detachably fixed to the first connection hole, and the binding ring is arranged around the annular frame;

[0008] A circumferential slot changing structure, comprising a circumferential docking station disposed inside the annular frame and circumferentially movable relative to the annular frame;

[0009] An axial entry and exit structure, the axial entry and exit structure comprising an axial docking station, the axial docking station being arranged on the inner side of the circumferential docking station and being axially movable relative to the circumferential docking station;

[0010] In which, the device fixing structure surrounds and is fixed to the outer side of the generator's guard ring or rotor, and a space is formed between the support member and the annular frame for arranging the circumferential slot changing structure and the axial entry and exit structure. The axial entry and exit structure is used to enable the generator air gap detection equipment to enter or exit the generator.

[0011] Optionally, in some embodiments of the present application, the annular frame includes a circular track and a connecting member, the circular track includes a first slide rail and a second slide rail, the first slide rail and the second slide rail are arranged parallel to each other, and the first slide rail and the second slide rail are fixedly connected by the connecting member.

[0012] Optionally, in some embodiments of the present application, the connecting member includes an intermediate connecting member, a first connecting member, and a second connecting member, the first connecting member is used to fix and connect the first slide rail, the second connecting member is used to fix and connect the second slide rail, the intermediate connecting member is used to connect the first slide rail and the second slide rail, one end of the intermediate connecting member is connected to the first slide rail, and the other end is connected to the second slide rail.

[0013] Optionally, in some embodiments of the present application, the circular track is coaxially arranged with the stator core of the generator, and the diameter of the circular track is equal to the diameter of the stator core.

[0014] Optionally, in some embodiments of the present application, the axial dock includes a guide groove and an alignment through hole, the guide groove is arranged on a side surface of the axial dock away from the circumferential dock, and the alignment through hole is arranged at one end of the axial dock away from the support member, when the generator air gap detection equipment is transported, the alignment through hole is aligned with the slot wedge to be detected of the generator, and the generator air gap detection equipment moves along the guide groove to the alignment through hole.

[0015] Optionally, in some embodiments of the present application, the support members are arranged at equal intervals, the number of the support members is the same as the number of the slot wedges to be detected and they are aligned one by one, and when circumferential slot replacement is performed, the center line of the alignment through hole is aligned with the center line of the support member.

[0016] Optionally, in some embodiments of the present application, along the axial direction, the length of the alignment through hole is equal to the length of the slot wedge to be detected.

[0017] The present application provides an installation and use method of a positioning and conveying device, using the positioning and conveying device described in any of the above embodiments, including:

[0018] The device fixing structure is fixedly installed on the end to be tested of the generator through a support member;

[0019] Installing the circumferential slot changing structure and the axial entry and exit structure on the annular frame in sequence;

[0020] The generator air gap detection device is placed on the axial docking station. The axial docking station is provided with an alignment through hole. The axial docking station is axially moved relative to the circumferential docking station so that the alignment through hole is aligned with the slot wedge to be detected. The generator air gap detection device is moved along the axial docking station to the alignment through hole and detects the slot wedge to be detected.

[0021] After the inspection of one slot wedge to be inspected is completed, the alignment through hole is aligned with the next slot wedge to be inspected by the circumferential slot changing structure, and the above steps are repeated until the inspection of all the slot wedges to be inspected is completed;

[0022] The positioning and conveying device is recovered and disassembled.

[0023] Optionally, in some embodiments of the present application, the step of aligning the alignment through hole with the next slot wedge to be detected through the circumferential slot changing structure also includes: aligning the support member with the slot wedge to be detected one by one, and aligning the alignment through hole and the support member along the axial direction when performing circumferential slot changing.

[0024] Optionally, in some embodiments of the present application, the step of recovering and disassembling the positioning and conveying device also includes: loosening the screws, sliding the circumferential dock to avoid the obstruction of the screws, removing the generator air gap detection equipment and the axial dock, cutting the binding ring, taking out the device fixing structure, and removing the circumferential dock and the screws from the device fixing structure.

[0025] Beneficial effect: By providing a positioning and conveying device, the generator air gap detection equipment is conveyed by utilizing the axial entry and exit structure, without the need for manual handling of the generator air gap detection equipment, thereby alleviating the technical problem that the existing generator air gap detection equipment has difficulty in entering the stator core teeth of the generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the positioning and conveying device provided by this application;

[0028] Figure 2A It is a top view schematic diagram among the three views of the positioning and conveying device provided by this application;

[0029] Figure 2B It is a main view schematic diagram among the three views of the positioning and conveying device provided by this application;

[0030] Figure 2C It is a left view schematic diagram among the three views of the positioning and conveying device provided by this application;

[0031] Figure 3 This is a schematic diagram of the three-dimensional structure of the positioning and transmission device provided by the present application installed on a generator;

[0032] Figure 4 It is a flow chart of the installation and use method of the positioning and conveying device provided in this application.

[0033] Description of reference numerals:

[0034] DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; and "inside" and "outside" refer to the outline of the device.

[0036] See also Figure 1 、 Figures 2A to 2C 、 Figure 3 The positioning and conveying device 100 provided in the present application includes a device fixing structure, a circumferential slot changing structure, and an axial entry and exit structure. The device fixing structure includes an annular frame, a support member, and a binding ring. The annular frame includes a plurality of first connecting holes, one end of the support member is detachably fixed to the first connecting hole, and the binding ring is arranged around the annular frame. The circumferential slot changing structure includes a circumferential docking warehouse 5, and the circumferential docking warehouse 5 can be circumferentially slidably arranged on the annular frame. The axial entry and exit structure includes an axial docking warehouse 3, and the axial docking warehouse 3 can be axially slidably arranged on the circumferential docking warehouse 5, wherein the device fixing structure surrounds and is fixed to the outer side of the guard ring 14 or the rotor 13 of the generator, and a space is formed between the support member and the annular frame for arranging the circumferential slot changing structure and the axial entry and exit structure. The axial entry and exit structure is used to enable the generator air gap detection equipment to enter or exit the generator.

[0037] In this embodiment, the generator air gap detection device is transported into or out of the teeth portion of the stator core 15 of the generator by utilizing the axial entry and exit structure, eliminating the need for manual transport of the generator air gap detection device, thereby alleviating the technical problem that the existing generator air gap detection device has difficulty in entering the teeth portion of the stator core 15 of the generator.

[0038] The technical solution of this application is now described in conjunction with specific embodiments.

[0039] In one embodiment, the annular frame includes a circular track 2 and a connecting member. The circular track 2 includes a first slide rail and a second slide rail. The first slide rail and the second slide rail are arranged parallel to each other. The first slide rail and the second slide rail are fixedly connected by the connecting member.

[0040] Among them, the connecting member includes an intermediate connecting member 8, a first connecting member 9, and a second connecting member 10. The first connecting member 9 is used to fix and connect the first slide rail, the second connecting member 10 is used to fix and connect the second slide rail, and the intermediate connecting member 8 is used to connect the first slide rail and the second slide rail. One end of the intermediate connecting member 8 is connected to the first slide rail, and the other end is connected to the second slide rail.

[0041] The intermediate connecting member 8 is provided with the first connecting hole at the outer side of the first slide rail, and the supporting member is detachably connected to the first connecting hole.

[0042] The support member and the first connection hole are screw-engaged with each other, and the tightness of the support member is changed by rotating the support member, so that the device fixing structure is fixed to the outside of the guard ring 14 of the generator by using the support member.

[0043] It can be understood that the first slide rail and the second slide rail are respectively slidably connected to the bottom of the circumferential dock 5, and the bottom of the circumferential dock 5 can be provided with a pulley, and the circumferential dock 5 and the circular track 2 are connected to each other through the pulley and the slide rail.

[0044] In this embodiment, the first slide rail and the second slide rail are arranged parallel to each other, so that the circumferential groove changing structure can slide circumferentially along the circular track 2.

[0045] In one embodiment, the circular track 2 is coaxially arranged with the stator core 15 of the generator, and the diameter of the circular track 2 is similar to the diameter of the stator core 15 .

[0046] In this embodiment, by making the diameter of the circular track 2 similar to the diameter of the stator core 15, the axial dock 3 is arranged close to the teeth of the stator core 15, so that the alignment through hole can be aligned with the slot wedge to be detected.

[0047] Furthermore, in one embodiment, the circular track 2 is coaxially arranged with the stator core 15 of the generator, and the diameter of the circular track 2 is equal to the diameter of the stator core 15 .

[0048] The axial dock 3 is arranged along the axial direction of the circular track 2 .

[0049] It can be understood that by setting the first track and the second track parallel to each other, the axial dock 3 can slide circumferentially along the circular track 2, and then setting the circular track 2 coaxially with the stator core 15, the axial dock 3 can be better aligned with the teeth of the stator core 15, so that the alignment through hole can be aligned with the slot wedge to be detected, so that the slot wedge to be detected is exposed, which is convenient for the generator air gap detection equipment to perform detection.

[0050] In this embodiment, the circular track 2 is coaxially arranged with the stator core 15 of the generator, and the diameter of the circular track 2 is equal to the diameter of the stator core 15. By reducing the spacing distance between the axial dock 3 and the teeth of the stator core 15, it is convenient to align the alignment through hole with the slot wedge to be detected between adjacent teeth, thereby improving the alignment accuracy between the alignment through hole and the slot wedge to be detected.

[0051] In one embodiment, the circumferential slot changing structure further includes a second connection hole provided on the side of the circumferential dock 5 close to the support member, and a circumferential fixing member 11 is provided at the second connection hole.

[0052] Wherein, the side wall of the first slide rail is exposed at the second connecting hole.

[0053] The circumferential fixing member 11 may be a screw, and the second connecting hole may be a screw hole.

[0054] Among them, when the circumferential dock 5 is fixed and not sliding circumferentially, the circumferential fixing piece 11 is tightened, and one end of the circumferential fixing piece 11 contacts the surface of the first slide rail, limiting the circumferential dock 5 from sliding circumferentially along the circular track 2; when the circumferential dock 5 needs to slide circumferentially, the circumferential fixing piece 11 is loosened, and one end of the circumferential fixing piece 11 does not contact the surface of the first slide rail, and at this time the circumferential dock 5 slides circumferentially along the circular track 2.

[0055] In this embodiment, by setting a second connecting hole on the side of the circumferential dock 5 and then tightening or loosening the circumferential fixing member 11, the circumferential dock 5 can be fixed or circumferentially slid, thereby realizing the function of circumferential slot changing, alleviating the technical problem of difficulty in circumferential slot changing when detecting the slot wedge to be detected in the existing equipment.

[0056] In one embodiment, the axial dock 3 includes a guide groove and an alignment through hole. The guide groove is arranged on a side surface of the axial dock 3 away from the circumferential dock 5, and the alignment through hole is arranged at one end of the axial dock 3 away from the support member. When the generator air gap detection equipment is transported, the alignment through hole is aligned with the slot wedge to be detected of the generator, and the generator air gap detection equipment moves along the guide groove to the alignment through hole.

[0057] The guide groove is used to guide the generator air gap detection device to move to the alignment through hole, and to detect the tightness of the slot wedge to be detected when the alignment through hole and the slot wedge to be detected are aligned.

[0058] Wherein, the width of the guide groove is equal to the width of the generator air gap detection device.

[0059] The axial center line of the guide groove coincides with the axial center line of the axial dock 3 .

[0060] The stator core 15 end of the guide slot is in a bell-mouth shape, so that the generator air gap detection device can return along the guide slot after detection. The axial length of the bell-mouth does not exceed half of the axial length of the generator air gap detection device.

[0061] It can be understood that the guide groove can be a slide rail, and correspondingly, a pulley corresponding to the guide groove is provided at the bottom of the generator air gap detection device, so that the generator air gap detection device can be moved along the guide groove to the alignment through hole.

[0062] Furthermore, a limiting member is provided on the surface of the axial dock 3 at the alignment through hole, which is used to fix the generator air gap detection equipment at the alignment through hole to prevent the generator air gap detection equipment from generating relative displacement relative to the slot wedge to be detected during the detection process, thereby improving the accuracy of the detection results; it should be noted that the limiting member can be one or more, and its setting position, type of limiting member, size, etc. can be designed or adjusted accordingly according to the size of the generator air gap detection equipment.

[0063] It should be noted that the alignment through hole is used to define the area to be detected. Therefore, the size of the alignment through hole can be slightly larger than the size of the slot wedge to be detected or equal to the size of the slot wedge to be detected. The slot wedge to be detected is covered by the alignment through hole in the direction perpendicular to the axial dock 3, thereby exposing the slot wedge to be detected in the direction perpendicular to the axial dock 3, which is convenient for detecting the tightness of the slot wedge to be detected.

[0064] In this embodiment, by setting a guide groove on the axial dock 3, the generator air gap detection equipment is conveniently transported to the alignment through hole, and then the alignment through hole is used to align with the slot wedge to be detected, thereby narrowing the detection range and improving the detection efficiency and accuracy.

[0065] In one embodiment, the axial dock 3 is provided with a third connecting hole on a side away from the circumferential dock 5 , and the third connecting hole is provided with an axial fixing member 12 .

[0066] The width of the axial dock 3 is equal to the width of the teeth of two stator cores 15 and the width of a slot wedge to be detected, and the widths of the teeth of the connected stator cores 15 are equal.

[0067] The third connection hole is at least provided through the axial dock 3 .

[0068] The axial fixing member 12 may be a screw, and the third connecting hole may also be a screw hole.

[0069] It can be understood that the axial dock 3 and the circumferential dock 5 are slidably connected to each other by providing an axial fixing piece 12. When the axial dock 3 needs to slide axially, the axial fixing piece 12 is loosened to allow the axial dock 3 to slide axially, thereby facilitating the alignment of the through hole with the slot wedge to be detected in the axial direction; when the axial dock 3 needs to be fixed, the axial fixing piece 12 is tightened to allow the end face of the axial fixing piece 12 to contact the surface of the circumferential dock 5, thereby limiting the movement of the axial dock 3.

[0070] Furthermore, the third connecting hole can be set through part of the circumferential dock 5. When the axial fixing piece 12 is tightened, the end of the axial fixing piece 12 enters the screw hole of the circumferential dock 5 and is engaged with each other. The engaging connection method can be a spiral engagement between the screw and the screw hole, thereby fixing the axial dock 3 to the circumferential dock 5.

[0071] In this embodiment, the axial sliding of the axial dock 3 is adjustable by providing a third connecting hole and an axial fixing piece 12. When the axial dock 3 needs to slide, the axial fixing piece 12 is loosened, and when the axial dock 3 needs to be fixed, the axial fixing piece 12 is tightened.

[0072] In one embodiment, any one of the support members is arranged in alignment with the slot wedge to be detected.

[0073] It can be understood that a first mark can be provided on the side of the circumferential dock 5 close to the support member, and the first mark is aligned with the center line of the alignment through hole, and a second mark is provided at the center line position of the support member. In the process of aligning the alignment through hole with the next slot wedge to be detected, it is only necessary to axially align the first mark with the second mark of the next support member to achieve the alignment of the alignment through hole and the slot wedge to be detected, and a higher alignment accuracy can be achieved, and it also has the advantages of simple operation and low cost.

[0074] In this embodiment, by aligning the support member with the slot wedge to be detected and taking the support member as a reference, it is convenient to align the through hole with the slot wedge to be detected when performing circumferential slot replacement, thereby improving the alignment accuracy and operability.

[0075] In one embodiment, the support members are arranged at equal intervals, and the number of the support members is the same as the number of the slot wedges to be detected and they are aligned one by one. When the slot is changed circumferentially, the center line of the alignment through hole is aligned with the center line of the support member.

[0076] Among them, the center line of the alignment through hole is along the axial center line, and the alignment through hole can be arranged symmetrically about the center line of the alignment through hole. The center line of the support member is also along the axial center line, and the support member can be arranged symmetrically about the center line of the support member.

[0077] Wherein, corresponding to the slot wedges to be detected, the support members may also be arranged at periodic intervals.

[0078] Among them, the support member includes a support screw 4, a support block 6, and an adjusting nut 7. One end of the support screw 4 is connected to the first connecting hole through the adjusting nut 7, which is used to fix the support member to the annular frame. The adjusting nut 7 is used to adjust the radial relative position of the support member and the rotor 13 or the retaining ring 14 of the generator. The other end of the support screw 4 is connected to the support block 6, and the support block 6 is used to contact the outer surface of the retaining ring 14, thereby fixing the support member and the annular frame to the outer surface of the retaining ring 14.

[0079] In this embodiment, by setting up multiple support members with the same number as the slot wedges to be detected and arranged in a corresponding manner, not only can the supporting effect of the support members be improved, but the support members can also be used to achieve positioning during the circumferential slot changing process, thereby facilitating the alignment of the through holes and the slot wedges to be detected.

[0080] In one embodiment, along the axial direction, the length of the alignment through hole is equal to the length of the slot wedge to be detected.

[0081] Furthermore, the width of the alignment through hole may be equal to the width of the wedge to be detected.

[0082] In one embodiment, the device fixing structure further includes a binding ring 1, which is wrapped around the annular frame and is used to fix the annular frame to the end of the generator to be tested.

[0083] It can be understood that the binding ring 1 and the support member work together to fix the annular frame to the outside of the retaining ring 14 of the generator.

[0084] Furthermore, the binding ring 1 and the circular track 2 can be coaxially arranged, and the binding ring 1 and the intermediate connecting member 8 are in contact with each other.

[0085] In this embodiment, the binding ring 1 is provided to improve the fixing effect of the fixing structure of the device.

[0086] See also Figure 4 The present invention provides an installation and use method of a positioning and conveying device 100, which uses the positioning and conveying device 100 described in any of the above embodiments, including:

[0087] S1: The device fixing structure is fixedly installed on the end to be tested of the generator through a support member;

[0088] S2: Installing the circumferential slot changing structure and the axial entry and exit structure on the annular frame in sequence;

[0089] S3: placing the generator air gap detection device on the axial dock 3. The axial dock 3 is provided with an alignment through hole. The axial dock 3 is axially moved relative to the circumferential dock 5 so that the alignment through hole is aligned with the slot wedge to be detected. The generator air gap detection device is moved along the axial dock 3 to the alignment through hole and detects the slot wedge to be detected.

[0090] S4: After the inspection of one slot wedge to be inspected is completed, the alignment through hole is aligned with the next slot wedge to be inspected by the circumferential slot changing structure, and the above steps are repeated until the inspection of all the slot wedges to be inspected is completed;

[0091] S5: Recover and disassemble the positioning and conveying device 100.

[0092] Among them, the step of installing the circumferential slot changing structure and the axial entry and exit structure on the annular frame in sequence also includes: removably fixing the circumferential dock 5 to the device fixing structure through the circumferential fixing member 11, and removably fixing the axial dock 3 to the circumferential dock 5 through the axial fixing member 12.

[0093] Among them, the step of placing the generator air gap detection device on the axial dock 3 also includes: a guide groove is provided on the side surface of the axial dock 3 away from the circumferential dock 5, and the generator air gap detection device is slidably connected to the guide groove.

[0094] Specifically, the installation and use method of the positioning and conveying device 100 includes:

[0095] The first step is to install the device fixing structure: First, since it is impossible to remove the supporting mechanism of the rotor 13 during the actual air gap detection process, the device fixing structure is designed as a multi-section detachable component, and the binding ring 1, circular track 2, connecting member, and supporting member are permanently combined and connected according to a certain number and rules to form the device fixing structure; the support screw 4 of the supporting member passes through the first connecting hole on the intermediate connecting member 8, first screwed into the adjusting nut 7, and then screwed into the support block 6 and connected to the support block 6, and then the adjusting nut 7 is used to adjust the radial relative position of the circular track 2 and the rotor 13 or the guard ring 14, and at the same time, the axial position of the device fixing structure is adjusted to make the binding ring 1 fully contact with the stator coil end structure of the generator; finally, use a soft rope with basically no stretch to bind the binding ring 1 to the stator coil end structure of the generator.

[0096] The soft rope may be a polyester-glass rope, and the substantially non-stretching soft rope is required not to damage the insulation effect of the end.

[0097] The second step is the installation of the circumferential slot-changing structure: the circumferential dock 5 is inserted into the fixed structure of the device, and the circumferential fixing piece 11 is screwed into the second connecting hole on the circumferential dock 5 so that the end face of the circumferential fixing piece 11 contacts the circular rail, thereby fixing the circumferential dock 5 on the circular track 2. The circumferential dock 5 is used to adjust the circumferential position of the axial dock 3 and the stator core 15. By tightening or loosening the circumferential fixing piece 11, the circumferential dock 5 is fixed or the circumferential dock 5 can be circumferentially slid.

[0098] The third step is to install the axial entry and exit structure: fix the axial dock 3 on the circumferential dock 5, and only slide axially on the circumferential dock 5, screw in the axial fixing piece 12, adjust the tightness of the axial fixing piece 12, and thus adjust the axial position of the axial dock 3 and the stator core 15.

[0099] Step 4: Place the generator air gap detection device: Ensure that the circumferential fixings 11 and axial fixings 12 are loosened, slide the circumferential docking station 5 to avoid obstruction by the support members, and place the generator air gap detection device into the guide groove of the axial docking station 3, placing it close to the axial fixings 12;

[0100] The fifth step is to perform circumferential positioning and fixation: Viewed from the axial direction, adjust the sliding circumferential dock 5 and the axial dock 3 so that both ends of the axial dock 3 overlap with the teeth of the stator core 15, and the slot wedge to be tested is located directly below the center of the axial dock 3. At this time, the alignment through hole is aligned with the slot wedge to be tested, tighten the circumferential fixing part 11, and fix the circumferential dock 5 on the circular slide rail.

[0101] Step 6: Axial positioning, fixing, and entry: First, slide the axial dock 3 to ensure that the outer cylindrical surface of the axial dock 3 has a certain axial contact length with the step farthest from the end of the stator core 15. Furthermore, the inner end surface of the axial dock 3 can be made to contact the stator core 15; secondly, tighten the axial fixing piece 12 to fix the axial dock 3 on the circumferential dock 5; finally, control the generator air gap detection equipment to move along the guide groove by itself and enter the slot wedge to be detected for detection.

[0102] Step 7: End wedge detection: Use the visual recognition module of the generator air gap detection equipment to identify the wedge to be detected at the alignment through hole of the axial dock 3. When the detection equipment reaches the designated position of the alignment through hole accessory, the detection work of the wedge to be detected can be carried out.

[0103] Step 8. Axial withdrawal of the generator air gap detection equipment: After the generator air gap inspection equipment completes the inspection of the slot wedge to be inspected, it withdraws from the tooth portion at the specified position to the insertion position on the axial docking bin 3, loosens the axial fixing piece 12, and adjusts the sliding axial docking bin 3 so that the outer cylindrical surface of the axial docking bin 3 has no contact with the step farthest from the end of the stator core 15; finally, loosens the circumferential fixing piece 11, and adjusts the position of the circumferential docking bin 5 so that the alignment through hole is aligned with the next slot wedge to be inspected.

[0104] Step 9: Detection of other slots: Repeat steps 5 to 8 until all slot wedges to be detected are detected by the generator air gap detection equipment.

[0105] Step 10, recovery and disassembly: First, loosen the circumferential fixing parts 11 and the axial fixing parts 12, slide the axial dock 3 and the circumferential dock 5 to avoid the obstruction of the support parts, and take out the air gap detection equipment and the axial dock 3; secondly, tighten the circumferential fixing parts 11 to fix the circumferential dock 5 at any position on the circular track 2; then loosen the adjusting nut 7, remove the support screw 4, the support block 6 and the adjusting nut 7; then remove the connecting parts of the device fixing structure, and then cut off all the binding ropes of the binding ring 1; finally, remove all the device fixing structures, and then unscrew the circumferential fixing parts 11, and remove the circumferential dock 5.

[0106] In one embodiment, the step of aligning the alignment through hole with the next slot wedge to be detected through the circumferential slot changing structure also includes: aligning the support member with the slot wedge to be detected one by one, and aligning the alignment through hole and the support member along the axial direction when performing circumferential slot changing.

[0107] The positioning and conveying device provided in this embodiment includes a device fixing structure, a circumferential slot changing structure, and an axial entry and exit structure. The device fixing structure includes an annular frame, a support member, and a binding ring. The annular frame includes a plurality of first connecting holes, one end of the support member is detachably fixed to the first connecting hole, and the binding ring is wrapped around the annular frame. The circumferential slot changing structure includes a circumferential docking warehouse, and the circumferential docking warehouse can be circumferentially slidably arranged on the annular frame. The axial entry and exit structure includes an axial docking warehouse, and the axial docking warehouse can be axially slidably arranged on the circumferential docking warehouse, wherein the device fixing structure surrounds and is fixed to the outer side of the guard ring or rotor of the generator, and a space is formed between the support member and the annular frame for arranging the circumferential slot changing structure and the axial entry and exit structure. The axial entry and exit structure is used to enable the generator air gap detection equipment to enter or exit the generator; the generator air gap detection equipment is transported into or out of the stator core tooth portion of the generator by using the axial entry and exit structure, and there is no need to manually carry the generator air gap detection equipment, which alleviates the technical problem that the existing generator air gap detection equipment is difficult to enter the stator core tooth portion of the generator.

[0108] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0109] The above is a detailed introduction to the positioning and conveying device and the installation and use method of the positioning and conveying device provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A positioning and conveying device, characterized in that: Used to transmit generator air gap detection equipment, including: A device fixing structure, comprising an annular frame, a support member, and a binding ring, wherein the annular frame comprises a plurality of first connection holes arranged along the circumference, one end of the support member is detachably fixed to the first connection hole, and the binding ring is arranged around the annular frame; A circumferential slot changing structure, comprising a circumferential docking station disposed inside the annular frame and circumferentially movable relative to the annular frame; An axial entry and exit structure, the axial entry and exit structure comprising an axial docking station, the axial docking station being arranged on the inner side of the circumferential docking station and being axially movable relative to the circumferential docking station; The axial docking station includes a guide groove and an alignment through hole. The guide groove is provided on a side surface of the axial docking station away from the circumferential docking station, and the alignment through hole is provided at one end of the axial docking station away from the support member. When the generator air gap detection device is transported, the alignment through hole is aligned with the slot wedge to be detected of the generator, and the generator air gap detection device is moved along the guide groove to the alignment through hole. In which, the device fixing structure surrounds and is fixed to the outer side of the generator's guard ring or rotor, and a space is formed between the support member and the annular frame for arranging the circumferential slot changing structure and the axial entry and exit structure. The axial entry and exit structure is used to enable the generator air gap detection equipment to enter or exit the generator.

2. The positioning and conveying device according to claim 1, wherein: The annular frame includes a circular track and a connecting piece. The circular track includes a first slide rail and a second slide rail. The first slide rail and the second slide rail are arranged parallel to each other. The first slide rail and the second slide rail are fixedly connected by the connecting piece.

3. The positioning and conveying device according to claim 2, wherein: The connecting member includes an intermediate connecting member, a first connecting member, and a second connecting member. The first connecting member is used to fix and connect the first slide rail, the second connecting member is used to fix and connect the second slide rail, and the intermediate connecting member is used to connect the first slide rail and the second slide rail. One end of the intermediate connecting member is connected to the first slide rail, and the other end is connected to the second slide rail.

4. The positioning and conveying device according to claim 2, wherein: The circular track is coaxially arranged with the stator core of the generator, and the diameter of the circular track is equal to the diameter of the stator core.

5. The positioning and conveying device according to claim 1, wherein: The support members are arranged at equal intervals, and the number of the support members is the same as that of the slot wedges to be detected and they are aligned one by one. When the slot is changed circumferentially, the center line of the alignment through hole is aligned with the center line of the support member.

6. The positioning and conveying device according to claim 5, wherein: Along the axial direction, the length of the alignment through hole is equal to the length of the slot wedge to be detected.

7. A method for installing and using a positioning and conveying device, using the positioning and conveying device according to any one of claims 1 to 6, characterized in that: include: The device fixing structure is fixedly installed on the end to be tested of the generator through a support member; Installing the circumferential slot changing structure and the axial entry and exit structure on the annular frame in sequence; The generator air gap detection device is placed on the axial docking station. The axial docking station is provided with an alignment through hole. The axial docking station is axially moved relative to the circumferential docking station so that the alignment through hole is aligned with the slot wedge to be detected. The generator air gap detection device is moved along the axial docking station to the alignment through hole and detects the slot wedge to be detected. After the inspection of one slot wedge to be inspected is completed, the alignment through hole is aligned with the next slot wedge to be inspected by the circumferential slot changing structure, and the above steps are repeated until the inspection of all the slot wedges to be inspected is completed; The positioning and conveying device is recovered and disassembled.

8. The method for installing and using the positioning and conveying device according to claim 7, wherein: The step of aligning the alignment through hole with the next slot wedge to be detected through the circumferential slot changing structure also includes: aligning the support member with the slot wedge to be detected one by one, and aligning the alignment through hole with the support member along the axial direction when performing circumferential slot changing.

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