Turbine shaft seal rack assembly tool

Abstract

The utility model belongs to steam turbine equipment technical field, concretely relates to a steam turbine shaft seal rack assembly tool, and this tool includes: base, is equipped with the arc locating surface that matches with the curvature of shaft seal strip in its inner ring, a pair of support is arranged in both ends of base, the rotating drum is coaxially suspended in the above of arc locating surface with locating surface, the rotating shaft is through rotating drum and is rotatablely arranged on the support in both ends, drive assembly is connected with one end of rotating shaft, wherein, the rotating drum extends along the axial direction of rotating shaft, and there are multiple containing grooves in radial distribution, the containing groove extends along the circumference of rotating drum, covers the rack groove that shaft seal strip sets, and the depth of containing groove is adapted to the height of rack, when drive assembly drives rotating drum to rotate to the direction of arc locating surface, the lug of rack circumference is embedded in the rack groove.

Description

Technical Field

[0001] This utility model belongs to the technical field of steam turbine equipment, and in particular relates to a steam turbine shaft seal rack assembly tooling. Background Technology

[0002] As a core power unit, the turbine's shaft sealing system has a decisive impact on the unit's operating efficiency and safety. In the turbine shaft sealing structure, the sealing racks are key components, requiring dense arrangement within the grooves of the corresponding annular shaft seal strip on the rotating shaft to form a multi-stage labyrinth seal. Traditional assembly processes require operators to individually pick up each sealing rack and manually press it into the grooves of the shaft seal strip, resulting in time-consuming and inefficient assembly.

[0003] Therefore, how to solve the problem of not being able to mass-assemble turbine racks onto shaft seals is a technical problem that urgently needs to be solved by those skilled in the art.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0005] This disclosure provides at least one assembly tooling for a steam turbine shaft seal rack.

[0006] In a first aspect, embodiments of this disclosure provide a turbine shaft seal rack assembly fixture, comprising: The base has an inner ring with an arc-shaped positioning surface that matches the curvature of the shaft seal strip; A pair of brackets are provided at both ends of the base; The rotating drum is coaxially suspended above the arc-shaped positioning surface. A rotating shaft, which passes through the rotating cylinder and is rotatably mounted on the bracket at both ends; A drive assembly is connected to one end of the rotating shaft; The rotating drum extends axially along the shaft and has multiple radially distributed receiving grooves, which extend along the outer periphery of the rotating drum and cover the toothed grooves provided by the shaft seal; and, The depth of the receiving groove is adapted to the height of the rack. When the drive assembly drives the rotating cylinder to rotate in the direction of the arc-shaped positioning surface, the protrusion on the outer periphery of the rack is embedded in the tooth groove.

[0007] In one alternative implementation, the drive assembly includes a motor whose output shaft is connected to the end of a rotating shaft.

[0008] In one alternative embodiment, the support includes two legs and a hydraulic cylinder that pushes the legs to lift the rotating drum.

[0009] In one optional embodiment, the rotating cylinder and the base have the same length. When the end face of the rotating cylinder and the end face of the base are on the same horizontal plane, the center line of the receiving groove coincides with the center line of the tooth groove, and the receiving groove is aligned with the shaft seal.

[0010] Secondly, this disclosure also provides a turbine shaft seal rack assembly fixture, comprising: The base has an inner ring with an arc-shaped positioning surface that matches the curvature of the shaft seal strip; A rotating cylinder, coaxial with the positioning surface, is rotatably mounted above the base via a support member; and, The rotating drum extends axially along the positioning surface and has multiple receiving grooves distributed radially. The receiving grooves extend along the outer periphery of the rotating drum and cover the toothed grooves provided by the shaft seal. A drive assembly for driving the rotating drum to rotate about its own axis; The receiving groove is used to place the rack. When the drive assembly drives the rotating cylinder to rotate in the direction of the arc-shaped positioning surface, the protrusions on the outer periphery of the rack in each receiving groove are embedded in the tooth groove.

[0011] In one alternative embodiment, a rotating shaft passes through the center of the rotating drum; The support member includes a bracket; and, The two ends of the rotating shaft pass through the bracket, suspending the rotating cylinder above the base.

[0012] In one alternative implementation, the drive assembly includes a motor whose output shaft is connected to the end of a rotating shaft.

[0013] In one alternative embodiment, the support includes two legs and a hydraulic cylinder that pushes the legs to lift the rotating drum.

[0014] In one optional embodiment, the rotating cylinder and the base are of the same length. When the end face of the rotating cylinder and the end face of the base are on the same horizontal plane, the center line of the receiving groove coincides with the center line of the tooth groove, and the receiving groove and the shaft seal are aligned.

[0015] The beneficial effect of this utility model is that the turbine shaft seal rack assembly fixture fixes multiple shaft seals on a base, and a rotating drum is set above the base. The rotating drum is equipped with receiving grooves corresponding to the number and position of the shaft seals. The rack is placed in the receiving groove and aligned with the tooth groove of the shaft seal. When the rotating drum rotates, it drives the rack to rotate together, so that the protrusions on the outer periphery of the rack are embedded in the tooth groove of the corresponding shaft seal, thereby realizing the batch assembly of racks onto the shaft seals.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and drawings.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A perspective view of a turbine shaft seal rack assembly fixture provided in an embodiment of this disclosure; Figure 2 A front view of a turbine shaft seal rack assembly fixture provided in an embodiment of this disclosure; Figure 3 A side view of a turbine shaft seal rack provided in an embodiment of this disclosure; Figure 4 This is an assembly diagram of a single rack and shaft seal provided in an embodiment of this disclosure.

[0020] In the picture: 100, Base; 110, Positioning surface; 120, Base end face; 200, Bracket; 210, Support leg; 220, Hydraulic cylinder; 300, Rotary drum; 310, Receiving groove; 320, Rotary drum end face; 400, Rotating shaft; 500, Drive assembly; 510, Motor; 600, Shaft seal; 610, Gear groove; 700, Rack; 710, Protrusion. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0023] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0024] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0025] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0026] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0027] Research has revealed the drawbacks of existing technologies: traditional assembly processes require operators to pick up each sealing toothed bar individually and manually press it into the tooth groove of the shaft seal bar one by one, which is time-consuming and inefficient.

[0028] Based on the above research, this disclosure provides a turbine shaft seal rack. By placing multiple racks in the receiving groove of a rotating drum and fixing the shaft seal strip on the base, the protrusions of the racks in the receiving groove are aligned with the tooth grooves of the shaft seal strip. When the rotating drum rotates, it drives the racks to rotate together, so that they are embedded in the tooth grooves of the shaft seal strip, thus achieving batch installation.

[0029] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] See Figure 1 and Figure 3This disclosure provides a turbine shaft seal rack assembly fixture, comprising: a base 100, the inner ring of which is provided with an arc-shaped positioning surface 110 matching the curvature of the shaft seal strips 600; the outer walls of multiple shaft seal strips 600 are fitted to the positioning surface 110 so that the shaft seal strips 600 are arranged in an array on the base 100; a pair of supports 200 are provided at both ends of the base 100, and a rotating shaft 400 is rotatably arranged between the supports 200; a rotating cylinder 300 is also provided above the base 100, which is coaxial with the arc-shaped positioning surface 110; the rotating shaft 400 passes through the rotating cylinder 300 and suspends its shaft above the arc-shaped positioning surface 110.

[0033] See also Figure 1 The rotating drum 300 extends axially along the rotating shaft 400 and has multiple radially distributed receiving grooves 310. The receiving grooves 310 extend along the outer periphery of the rotating drum 300, and their length covers the toothed grooves 610 provided on the shaft seal 600. The depth of the receiving grooves 310 is adapted to the height of the rack 700, so that when the rack 700 is placed in the receiving groove 310, the protrusions 710 on the outer periphery of the rack 700 are radially aligned with the toothed grooves 610. One end of the rotating shaft 400 is connected to a drive assembly 500. When the drive assembly 500 drives the rotating shaft to rotate clockwise in the direction 400 of the arc-shaped positioning surface 110, the rotating drum 300 drives the rack 700 to rotate synchronously, so that the protrusions 710 on the outer periphery of the rack 700 are embedded in the corresponding toothed grooves 610 of the shaft seal 600, thereby realizing the batch assembly of racks 700 onto the shaft seal 600. Furthermore, when the drive assembly 500 drives the rotating shaft 400 to rotate counterclockwise, the rotating drum 300 rotates in the opposite direction to return to its original position, and then the rack 700 can be assembled for the second time.

[0034] See Figure 4 , Figure 4 This diagram illustrates the assembly of a single rack 700 and a single shaft seal strip 600. When there are a large number of shaft seal strips 600, the assembly time is relatively long. The turbine shaft seal rack assembly fixture of this embodiment allows for the batch installation of racks 700 onto shaft seal strips 600, effectively improving assembly efficiency.

[0035] See also Figure 1 In some embodiments, the drive assembly 500 includes a motor 510, the output shaft of which is connected to the end of the rotating shaft 400, and the motor 510 drives the rotating shaft 400 and the rotating drum 300 to rotate together through the output shaft.

[0036] See also Figure 1In some embodiments, the bracket 200 includes two legs 210 and a hydraulic cylinder 220, which pushes the legs 210 to lift the rotating drum 300. After all the racks 700 are assembled, the legs 210 are lifted by the hydraulic cylinder 220. The rise of the legs 210 causes the rotating shaft 400 and the rotating drum 300 to be lifted together, making it easier to remove the shaft seal 600 from the base 100.

[0037] See Figure 2 In some embodiments, the length of the rotating drum 300 is the same as that of the base 100. When the end face 320 of the rotating drum and the end face 120 of the base are on the same horizontal plane, the center line of the receiving groove 310 coincides with the center line of the toothed groove 610, and the receiving groove 310 and the shaft seal 600 are aligned. This makes operation convenient and facilitates the alignment of the protrusion 710 of the rack 700 in the receiving groove 310 with the toothed groove 610 of the shaft seal 600.

[0038] See Figure 1 Some embodiments also provide a turbine shaft seal rack 700 assembly fixture, including: a base 100, the inner ring of which is provided with an arc-shaped positioning surface 110 matching the curvature of the shaft seal 600; a rotating cylinder 300, coaxial with the positioning surface 110, and rotatably disposed above the base 100 by a support member; and the rotating cylinder 300 extending axially along the positioning surface 110 and having a plurality of receiving grooves 310 radially distributed thereon, the receiving grooves 310 extending along the outer periphery of the rotating cylinder 300 and covering the tooth grooves 610 provided on the shaft seal 600; a drive assembly 500 for driving the rotating cylinder 300 to rotate around its own axis; the receiving grooves 310 are used to place the rack 700, and when the drive assembly 500 drives the rotating cylinder 300 to rotate in the direction of the arc-shaped positioning surface 110, the protrusions 710 on the outer periphery of the rack 700 in each receiving groove 310 are embedded in the tooth groove.

[0039] See also Figure 1 In some embodiments, the rotating drum 300 has a rotating shaft 400 passing through its axis; the support includes a bracket 200; and the two ends of the rotating shaft 400 pass through the bracket 200 to suspend the rotating drum 300 above the base 100.

[0040] In summary, this turbine shaft seal rack assembly fixture fixes multiple shaft seal strips 600 onto a base 100. A rotating drum 300 is positioned above the base 100. The rotating drum 300 has receiving grooves 310 corresponding to the number and position of the shaft seal strips 600. The rack 700 is placed in the receiving grooves 310 and aligned with the tooth grooves 610 of the shaft seal strips 600. When the rotating drum 300 rotates, it drives the rack 700 to rotate as well, causing the protrusions 710 on the outer periphery of the rack 700 to embed into the tooth grooves 610 of the corresponding shaft seal strips 600. This allows for the batch assembly of racks 700 onto the shaft seal strips 600.

[0041] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0043] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0044] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0045] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A turbine shaft seal rack assembly fixture, characterized in that, include: The base (100) has an inner ring with an arc-shaped positioning surface (110) that matches the curvature of the shaft seal (600). A pair of brackets (200) are disposed at both ends of the base (100); The rotating cylinder (300) is coaxially suspended above the arc-shaped positioning surface (110) and the positioning surface (110); A rotating shaft (400) passes through the rotating cylinder (300) and is rotatably mounted on the bracket (200) at both ends; A drive assembly (500) is connected to one end of the rotating shaft (400); The rotating drum (300) extends axially along the rotating shaft (400) and has a plurality of radially distributed receiving grooves (310). These receiving grooves (310) extend along the outer periphery of the rotating drum (300) and cover the toothed grooves (610) provided on the shaft seal (600). The depth of the receiving groove (310) is adapted to the height of the rack (700). When the drive assembly (500) drives the rotating drum (300) to rotate in the direction of the arc-shaped positioning surface (110), the protrusion (710) on the outer periphery of the rack (700) is embedded in the tooth groove (610).

2. The turbine shaft seal rack assembly fixture as described in claim 1, characterized in that, The drive assembly (500) includes a motor (510) whose output shaft is connected to the end of a rotating shaft (400).

3. The turbine shaft seal rack assembly fixture as described in claim 1, characterized in that, The support (200) includes two legs (210) and a hydraulic cylinder (220) that pushes the legs (210) to lift the rotating drum (300).

4. The turbine shaft seal rack assembly fixture as described in claim 1, characterized in that, The rotating cylinder (300) and the base (100) have the same length. When the end face of the rotating cylinder (320) and the end face of the base (120) are on the same horizontal plane, the center line of the receiving groove (310) coincides with the center line of the tooth groove (610), and the receiving groove (310) and the shaft seal (600) are aligned.

5. A turbine shaft seal rack assembly fixture, characterized in that, include: The base (100) has an inner ring with an arc-shaped positioning surface (110) that matches the curvature of the shaft seal (600). A rotating cylinder (300) is coaxial with the positioning surface (110) and rotatably mounted above the base (100) via a support member; and, The rotating drum (300) extends axially along the positioning surface (110) and has a plurality of receiving grooves (310) distributed radially. The receiving grooves (310) extend along the outer periphery of the rotating drum (300) and cover the toothed grooves (610) provided by the shaft seal (600). A drive assembly (500) is used to drive the rotating drum (300) to rotate about its own axis; The receiving groove (310) is used to place the rack (700). When the drive assembly (500) drives the rotating drum (300) to rotate in the direction of the arc-shaped positioning surface (110), the protrusion (710) on the outer periphery of the rack (700) in each receiving groove (310) is embedded in the tooth groove (610).

6. The turbine shaft seal rack assembly fixture as described in claim 5, characterized in that, The rotating drum (300) has a rotating shaft (400) passing through its axis. The support member includes a bracket (200); and, The two ends of the rotating shaft (400) pass through the bracket (200) to suspend the rotating cylinder (300) above the base (100).

7. The turbine shaft seal rack assembly fixture as described in claim 6, characterized in that, The drive assembly (500) includes a motor (510) whose output shaft is connected to the end of a rotating shaft (400).

8. The turbine shaft seal rack assembly fixture as described in claim 6, characterized in that, The support (200) includes two legs (210) and a hydraulic cylinder (220) that pushes the legs (210) to lift the rotating drum (300).

9. The turbine shaft seal rack assembly fixture as described in claim 5, characterized in that, The rotating cylinder (300) and the base (100) have the same length. When the end face of the rotating cylinder (320) and the end face of the base (120) are on the same horizontal plane, the center line of the receiving groove (310) coincides with the center line of the tooth groove (610), and the receiving groove (310) and the shaft seal (600) are aligned.

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