A kind of photothermal generator rotor extraction construction equipment

Abstract

This utility model relates to the field of generator technology and discloses a rotor insertion and installation device for a solar thermal generator. The device includes a base, a mounting seat fixedly connected to the upper side of the base, a sliding rubber plate slidably connected to the upper left side of the mounting seat, a rotor slider slidably connected to the upper side of the sliding rubber plate, a generator body mounted on the upper side of the rotor slider, and a drive assembly fixedly connected to the upper right side of the base. The drive assembly supports and limits the generator rotor, and the generator body is placed on the upper side of the drive assembly. This utility model's process includes meticulous rotor and stator inspection, thorough preparation of tools and equipment, and a series of innovative rotor insertion steps. By laying a specially designed sliding plate and lubrication measures inside the stator cavity, combined with the precise operation of a manual hoist and jack, the rotor is installed smoothly and accurately, significantly improving installation efficiency and safety.

Description

Technical Field

[0001] This utility model relates to the field of generator technology, and in particular to a construction device for drilling through the rotor of a solar thermal generator. Background Technology

[0002] In existing concentrated solar power (CSP) technologies, rotor installation is a complex and critical step. A CSP generator typically consists of a turbine and a generator, with the rotor being the core component. Its precise installation is crucial to the overall system performance. However, traditional rotor installation methods have several drawbacks: Rotor-stator alignment issues: In traditional installation processes, rotor-stator alignment often relies on the operator's experience and skills, which can lead to inaccurate installation, affecting generator operating efficiency and lifespan. Rotor sway and collision risks: The rotor may sway during installation, increasing the risk of collision with the stator, potentially causing equipment damage or installation failure. Low installation efficiency: Traditional rotor installation methods are typically time-consuming, requiring multiple people to work together, increasing labor and time costs. Safety issues: Without appropriate safety measures, the hoisting and movement of the rotor can pose safety risks to operators. Utility Model Content

[0003] To solve the above-mentioned technical problems, this disclosure provides a construction device for drilling through the rotor of a solar thermal generator.

[0004] This disclosure provides a rotor extraction and installation device for a solar thermal generator, which aims to improve the problem in the prior art where the rotor shakes when the crane starts and runs at high speed, thus posing a risk of collision between the rotor and the stator.

[0005] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0006] 1. Generator rotor inspection: The journals should be clean and free of oil stains, paint, rust, pitting, and mechanical damage. There should be no moving parts on the rotor, the rotor slot wedges should be secure, the counterweight should be firmly fixed and locked, and all nuts on the rotor should be tightened and have anti-loosening devices. The cold-state test of the electric rotor windings should be passed. Confirm that there are no foreign objects in the stator and rotor ventilation holes. The generator rotor insulation resistance test should be passed. The generator rotor DC resistance test should be passed.

[0007] 2. Generator stator inspection: In cooperation with electrical personnel, inspect to confirm that the slot wedges are not loose, the ventilation grooves are clean and unobstructed, and there are no blockages. All bolts on the mating surfaces should be tightened and not loose.

[0008] 3. Equipment and Tool Preparation: Inspect all components of the crane to ensure a stable and reliable power supply and safe and reliable brake operation. Check that the manufacturer's special tools and accessories for threading the rotor are qualified and complete. Ensure that the hoisting wire ropes meet the hoisting requirements. Ensure that all construction materials are properly prepared.

[0009] 4. Rotor Installation: Lower the lower half of the end caps at both the steam and exciter ends to avoid obstructing rotor insertion. Temporarily fix the steam end baffle ring to the inner end cap. First, lay a rubber sheet on the surface of the stator core inside the stator cavity. Place a sliding plate on the rubber sheet, and apply a base coat of paraffin wax to the inner surface (top) of the sliding plate, followed by a lubricant (such as grease). Test beforehand to see if the sliding plate slides smoothly without any jamming. Pad the ends of the stator coils at the steam and exciter ends with rubber or felt to prevent damage or contamination. Install the rotor sliding plate on the rotor shaft diameter at the steam end. Install the tool beam for inserting the rotor on the exciter end face of the rotor, ensuring the protective washers are installed. Lift the rotor, aligning the rotor center with the stator center in a straight line. Slowly move the rotor into the stator cavity. When the crane sling is close to the stator frame, let the rotor sliding plate support the steam end of the rotor, and temporarily support the exciter end of the rotor with wooden blocks. Use the crane to lift the rotor at the exciter end shaft diameter (outer oil baffle), keeping the rotor basically horizontal. Using two manual hoists, hook them onto the tool beam at the rotor exciter end from the left and right sides of the stator exciter end, respectively. Pull the chains of the left and right hoists at a uniform speed to slowly slide the rotor forward. When the rotor slider moves to about 1-2 meters from the edge of the steam end slide plate, stop moving forward, slightly raise the rotor exciter end, and place the red slider on the rotor body (ensuring it is 100mm away from the steam end guard ring; a rope can be pre-attached to the slider to monitor whether it moves forward with the rotor and to facilitate removal of the slider after the rotor is in place). After the rotor body slider is in place, lower the rotor to keep it basically horizontal and transfer some of its weight to the slider on the body. Continue to pull the chains of the left and right hoists evenly to move the rotor forward, carefully observing the movement of the rotor body slider and the rotor slider on the slide plate. Continue moving until the steam end rotor is in place, then remove the rotor slider. Using a crane, lift the rotor as high as possible. Place another set of rotor body sliders (blue) under the rotor excitation end body. After the rotor body sliders are in place, lower the rotor to keep it horizontal. Support the rotor with both sets of rotor body sliders and remove the crossbeam. At the steam end, use jacks and supports to lift the steam end rotor (note that protective pads should be added to the shaft diameter). Install the steam end guide ring, tighten the bolts, and ensure the locking plates are reliably locked. Lift the lower end cover, tighten the bolts, install the steam end bearings, and let the bearings support the rotor. Remove the jacks. Attached Figure Description

[0010] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0011] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 A diagram illustrating the process of inserting the rotor into the stator in the generator rotor insertion method provided by this utility model.

[0013] Figure 2 A diagram illustrating the process of inserting the rotor into the stator in the generator rotor insertion method provided by this utility model.

[0014] Figure 3 A diagram illustrating the process of inserting the rotor into the stator in the generator rotor insertion method provided by this utility model.

[0015] Figure 4 A diagram illustrating the process of inserting the rotor into the stator in the generator rotor insertion method provided by this utility model.

[0016] Figure 5 This diagram illustrates the process of inserting the rotor into the stator in the generator rotor insertion method provided by this utility model.

[0017] Icon labels:

[0018] 1. Base; 2. Mounting seat; 3. Sliding rubber plate; 4. Rotor slider; 5. Pad; 6. Lifting sling; 7. Jack; 8. Cardboard pad; 9. Generator body. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0020] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this disclosure, and not all embodiments.

[0021] Reference Figures 1-5This utility model provides an embodiment of a solar thermal generator rotor extraction and installation device, comprising a base 1, an mounting seat 2 fixedly connected to the upper side of the base 1, a slider rubber plate 3 slidably connected to the upper left side of the mounting seat 2, a rotor slider 4 slidably connected to the upper side of the slider rubber plate 3, a generator body 9 mounted on the upper side of the rotor slider 4, a drive assembly fixedly connected to the upper right side of the base 1, the drive assembly being used to support and limit the generator rotor, the generator body 9 being placed on the upper side of the drive assembly, and a sling 6 being fitted onto the output end of the generator body 9; the drive assembly includes a pad 5, the pad 5 being fixedly connected to the upper right side of the base 1, a jack 7 being fixedly connected to the upper side of the pad 5, and a cardboard pad 8 being fixedly connected to the output end of the jack 7.

[0022] Lower the lower half of the end caps at both the steam and exciter ends to avoid obstructing rotor insertion. Temporarily fix the steam end baffle ring to the inner end cap. First, lay a rubber sheet on the surface of the stator core inside the stator cavity, then place a sliding plate on the rubber sheet. Apply a base coat of paraffin wax to the inner surface (top) of the sliding plate, then apply a lubricant (such as grease). Test beforehand to see if the sliding plate slides smoothly without any jamming. Pad the ends of the stator coils at the steam and exciter ends with rubber or felt to prevent damage or contamination. Install the rotor sliding plate 4 on the rotor shaft diameter at the steam end, and install the tool beam for inserting the rotor on the exciter end face of the rotor, making sure to install the protective washer. Lift the rotor, ensuring that the rotor center and the stator center are on the same straight line, and slowly move the rotor into the stator cavity. When the crane sling 6 is close to the stator frame, let the rotor sliding plate 4 support the steam end of the rotor, and temporarily support the exciter end of the rotor with wooden blocks. Use a crane to lift the rotor at the exciter end shaft diameter (outer oil baffle), keeping the rotor basically horizontal. Using two manual hoists, hook them onto the tool beam at the rotor exciter end from the left and right sides of the stator exciter end, respectively. Pull the chains of the left and right hoists at a uniform speed to slowly slide the rotor forward. When the rotor slider 4 moves to about 1-2m from the edge of the steam end slide plate, stop moving forward, slightly raise the rotor exciter end, and place the red slider on the rotor body (ensuring it is 100mm away from the steam end guard ring; a rope can be pre-attached to the slider to monitor whether it moves forward with the rotor and to facilitate removal of the slider after the rotor is in place). After the rotor body slider is in place, lower the rotor to keep it basically horizontal and transfer some of its weight to the slider on the body. Continue to pull the chains of the left and right hoists evenly to move the rotor forward, carefully observing the sliding of the rotor body slider and rotor slider 4 on the slide plate. Continue moving until the steam end rotor is in place, then remove rotor slider 4. Using a crane, lift the rotor as high as possible. Place another set of rotor body sliders (blue) under the rotor excitation end body. After the rotor body sliders are in place, lower the rotor to keep it horizontal. Support the rotor with both sets of rotor body sliders and remove the crossbeam. At the steam end, use jack 7 and support blocks to lift the steam end rotor (note that protective pads should be added to the shaft diameter). Install the steam end guide ring, tighten the bolts, and ensure that the locking plates are reliably locked. Lift the lower end cover, tighten the bolts, install the steam end bearing, and let the bearing support the rotor. Remove jack 7.

[0023] Reference Figures 1-5The generator body 9 is mounted on the upper side of the cardboard pad 8; the generator body 9 is slidably connected to the upper side of the mounting base 2; a damping layer is provided between the slider rubber plate 3 and the rotor slider 4, the damping layer is composed of alternating layers of elastic rubber sheets and damping material layers, used to absorb axial vibration during rotor insertion; the sling 6 adopts a segmented structure, including a middle elastic buffer section and rigid connection sections at both ends, the rigid connection section is provided with a quick-locking clamp that matches the generator output end; the upper surface of the cardboard pad 8 is provided with anti-slip texture, and multiple sets of ball arrays are embedded inside it, the ball arrays protrude 0.5-1mm from the surface under non-pressure conditions; the surface of the elastic rubber sheet of the damping layer is provided with a wavy protrusion structure, the protrusion direction of adjacent rubber sheets is perpendicular to each other, and the damping material layer is a polyurethane composite material containing nano-silica particles.

[0024] The generator body 9 is positioned on the upper side of the cardboard pad 8, facilitating the lifting of the steam-end rotor. The generator body 9 is slidably connected to the upper side of the mounting base 2, providing support and limiting for the generator body 9. A damping layer, composed of alternating layers of elastic rubber sheets and damping material, is provided between the slider rubber plate 3 and the rotor slider 4 to absorb axial vibrations during rotor extraction, effectively protecting the generator body 9. The sling 6 employs a segmented structure, including a central elastic buffer section and rigid connecting sections at both ends. The device is equipped with a quick-locking clamp that matches the generator output, which facilitates the slow forward sliding of the rotor. The upper surface of the cardboard pad 8 has anti-slip textures and multiple sets of ball bearing arrays embedded inside. The ball bearing arrays protrude 0.5-1mm from the surface when not under pressure, which reduces the frictional resistance when the generator rotor moves horizontally. The surface of the elastic rubber sheet of the damping layer has a wavy protrusion structure, with the protrusion directions of adjacent rubber sheets perpendicular to each other. The damping material layer is a polyurethane composite material containing nano-silica particles, which improves the buffering effect of the damping layer.

[0025] See Figure 1 , Figure 1This invention provides a method for inserting a generator rotor into the stator, including the following steps: Lowering the lower half of the end caps at both the steam and excitation ends to avoid obstructing rotor insertion; temporarily fixing the steam end windshield ring to the inner end cap; first, laying a rubber sheet on the surface of the stator core inside the stator cavity, then placing a sliding plate on the rubber sheet; applying a paraffin wax base coat to the inner surface (top) of the sliding plate, followed by applying a lubricant (usually grease); and testing the sliding plate beforehand to ensure smooth sliding and prevent jamming; padding the ends of the stator coils at the steam and excitation ends with rubber or felt to prevent damage or contamination; installing the rotor sliding plate 4 on the rotor shaft diameter at the steam end; and installing the rotor insertion tool beam on the excitation end face of the rotor, while ensuring the installation of protective washers; and lifting the rotor so that the rotor center and stator center are aligned, slowly moving the rotor into the stator cavity.

[0026] See Figure 2 , Figure 2 This invention provides a method for inserting a generator rotor into the stator, including the following steps: When the gantry crane hoist 6 is near the stator base, the rotor slider 4 supports the steam end of the rotor, and the excitation end is temporarily supported by wooden blocks. The gantry crane lifts the rotor at the excitation end shaft diameter (outer oil baffle), keeping the rotor basically horizontal. Two manual hoists are hooked onto the tool beam at the end of the rotor excitation end from the left and right sides of the stator excitation end, respectively. The chains of the left and right manual hoists are pulled at a uniform speed, causing the rotor to slide forward slowly. When the rotor slider 4 moves to about 1-2m from the edge of the steam end slide plate, the forward movement is paused, the excitation end of the rotor is raised, and the red slider of the rotor body is placed in (ensuring that it is 100mm away from the steam end guard ring; a rope can be pre-tied to the slider to monitor whether the slider moves forward with the rotor, and also to facilitate the removal of the slider after the rotor is in place). After the rotor body slider is placed, the rotor is lowered to keep it basically horizontal, and part of the rotor's weight is transferred to the slider of the body.

[0027] See Figure 3 , Figure 3 This invention provides a method for inserting a generator rotor into the stator, illustrating the process. The steps include: uniformly pulling the chains of the left and right hoists to move the rotor forward, while simultaneously observing the sliding of the rotor body slider and rotor slider 4 on the sliding plate. Continue moving until the steam-end rotor is in position, then remove rotor slider 4. Use a crane to lift the rotor, place another set of rotor body sliders (blue) under the rotor excitation end body, and after placing the rotor body sliders, lower the rotor to maintain a horizontal position. Use the two sets of rotor body sliders to support the rotor, and then remove the crossbeam.

[0028] See Figure 4 and Figure 5 , Figure 4 and Figure 5This invention provides a method for inserting a generator rotor into the stator, which includes the following steps: Using jack 7 and a support block, lift the steam-end rotor at the steam end (note that a protective shim should be added to the shaft diameter); install the steam-end air guide ring; tighten the bolts; and ensure the locking plates are reliably locked. Lift the lower end cover, tighten the bolts, install the steam-end bearing, which supports the rotor; and remove jack 7.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rotor extraction and installation device for a solar thermal generator, comprising a base (1), characterized in that: A mounting base (2) is fixedly connected to the upper side of the base (1). A slider rubber plate (3) is slidably connected to the upper left side of the mounting base (2). A rotor slider (4) is slidably connected to the upper side of the slider rubber plate (3). A generator body (9) is mounted on the upper side of the rotor slider (4). A drive assembly is fixedly connected to the upper right side of the base (1). The drive assembly is used to support and limit the generator rotor. The generator body (9) is placed on the upper side of the drive assembly. A sling (6) is fitted on the output end of the generator body (9).

2. The solar thermal generator rotor extraction and penetration construction equipment according to claim 1, characterized in that: The drive assembly includes a pad (5), which is fixedly connected to the upper right side of the base (1). A jack (7) is fixedly connected to the upper side of the pad (5), and a cardboard pad (8) is fixedly connected to the output end of the jack (7).

3. The solar thermal generator rotor extraction and penetration construction equipment according to claim 1, characterized in that: The generator body (9) is placed on the upper side of the cardboard (8).

4. The solar thermal generator rotor extraction and penetration construction equipment according to claim 1, characterized in that: The generator body (9) is slidably connected to the upper side of the mounting base (2).

5. The solar thermal generator rotor extraction and penetration construction equipment according to claim 1, characterized in that: A damping layer is provided between the slider rubber plate (3) and the rotor slider (4). The damping layer is composed of alternating layers of elastic rubber sheets and damping material, which is used to absorb axial vibration during the rotor insertion process.

6. The solar thermal generator rotor extraction and penetration construction equipment according to claim 1, characterized in that: The sling (6) adopts a segmented structure, including a middle elastic buffer section and rigid connection sections at both ends. The rigid connection section is equipped with a quick-locking clamp that matches the generator output end.

7. The solar thermal generator rotor extraction and penetration construction equipment according to claim 2, characterized in that: The upper surface of the cardboard pad (8) is provided with anti-slip texture, and multiple sets of ball bearing arrays are embedded inside it. The ball bearing arrays protrude 0.5-1mm from the surface when not under pressure.

8. The solar thermal generator rotor extraction and penetration construction equipment according to claim 5, characterized in that: The surface of the elastic rubber sheet of the damping layer is provided with a wavy protrusion structure, and the protrusion directions of adjacent rubber sheets are perpendicular to each other. The damping material layer is a polyurethane composite material containing nano-silica particles.

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