Gas turbine unit and supporting structure thereof

Abstract

The invention discloses a gas turbine unit and a supporting structure thereof, and relates to the technical field of gas turbines. The supporting structure comprises a first connecting pipe and a second connecting pipe, the first end of the first connecting pipe is used for being connected with the cold end of the gas turbine; a second connecting pipe; the first end of the second connecting pipe is used for being connected with the gearbox; the second end of the second connecting pipe is used for being connected with the second end of the first connecting pipe; after the second connecting pipe is connected with the first connecting pipe, the axis of the output shaft coincides with the axis of the input shaft. And the supporting assembly is at least used for supporting the hot end of the gas turbine. Through the arrangement of the first connecting pipe and the second connecting pipe, the cold end of the gas turbine can be supported after the first connecting pipe and the second connecting pipe are combined, and conditions are provided for direct centering splicing of the output shaft of the gas turbine and the input shaft of the gearbox.

Description

Technical Field

[0001] This application relates to the technical field of gas turbines, and specifically to a gas turbine unit and its support structure. Background Art

[0002] The support structure of a gas turbine is a key structure to ensure the stable operation of the gas turbine. The commonly used gas turbine support structures on the market are as Figure 1 shown. It includes a support base, on which a first support column and a second support column are provided. The first support column is used to support the cold end of the gas turbine (i.e., the end of the gas turbine close to the output shaft), and the second support column is used to support the hot end of the gas turbine (i.e., the end of the gas turbine far from the output shaft).

[0003] It should be clear that during the use of the gas turbine, the output shaft of the gas turbine (hereinafter referred to as the output shaft) needs to be in transmission connection with the input shaft of the gearbox (hereinafter referred to as the input shaft) through a coupling. As for the support structure as Figure 1 shown, the process of forming a transmission connection between the output shaft of the gas turbine and the input shaft of the gearbox through a coupling is as follows: First, move the gas turbine to a suitable position on the common base so that the distance between the output shaft and the input shaft is approximately equal to the length of the coupling; tighten the anchor bolts connecting the support base and the common base; measure the concentricity between the input shaft and the output shaft; if the concentricity does not meet the requirements, loosen the anchor bolts, adjust the position of the gas turbine based on the measured data, and tighten the anchor bolts again to measure the concentricity; repeat the adjustment many times until the concentricity between the input shaft and the output shaft meets the requirements, and then install the coupling between the input shaft and the output shaft so that the input shaft and the output shaft form a transmission connection. This operation process is relatively cumbersome, and it is difficult to achieve the centering of the input shaft and the output shaft with one-time or a small number of adjustment times. Summary of the Invention

[0004] The purpose of this application is to provide a gas turbine unit and its support structure to solve the technical problem that the existing support structure makes it difficult to form a transmission connection between the input shaft and the output shaft.

[0005] To achieve the above purpose, this application provides the following technical solutions:

[0006] In a first aspect, this application proposes a support structure, which is applied to a gas turbine unit. The gas turbine unit includes a common base, a gas turbine, and a gearbox; the gas turbine and the gearbox are installed on the common base; the output shaft of the gas turbine forms a transmission connection with the input shaft of the gearbox through a coupling, and the coupling is a plug-in coupling; the support structure includes:

[0007] The first connecting pipe; the first end of the first connecting pipe is used to connect with the cold end of the gas turbine;

[0008] The second connecting pipe; the first end of the second connecting pipe is used to connect with the gearbox; the second end of the second connecting pipe is used to connect with the second end of the first connecting pipe; after the second connecting pipe is connected to the first connecting pipe, the axis lines of the output shaft and the input shaft coincide;

[0009] The support assembly is at least used to support the hot end of the gas turbine.

[0010] As a specific solution in the technical solution of the present application, the coupling is a spline sleeve coupling or an elastic pin coupling.

[0011] As a specific solution in the technical solution of the present application, a positioning structure is further provided between the first connecting pipe and the second connecting pipe, and the positioning structure is used to position and align the first connecting pipe and the second connecting pipe.

[0012] As a specific solution in the technical solution of the present application, the positioning structure includes:

[0013] The first flange is arranged at the second end of the first connecting pipe; the first flange is provided with positioning holes;

[0014] The second flange is arranged at the second end of the second connecting pipe; the second flange is provided with positioning pins, and the first flange and the second flange are positioned and aligned through the positioning holes and the positioning pins;

[0015] Or, the second connecting pipe is axially movably sleeved outside the first connecting pipe; the positioning structure includes a positioning chute arranged on the inner side wall of the second connecting pipe and a positioning block arranged on the outer side wall of the first connecting pipe; the positioning chute extends along the axial direction of the second connecting pipe; the positioning block is adapted to the positioning chute;

[0016] Or, the second connecting pipe is axially movably sleeved inside the first connecting pipe; the positioning structure includes a positioning chute arranged on the outer side wall of the second connecting pipe and a positioning block arranged on the inner side wall of the first connecting pipe; the positioning chute extends along the axial direction of the second connecting pipe; the positioning block is adapted to the positioning chute.

[0017] As a specific solution in the technical solution of the present application, the support assembly includes two groups of support column groups; one group of support column groups is used to support one side of the gas turbine; the other group of support column groups is used to support the other side of the gas turbine; each group of support column groups includes at least one third support column; each of the third support columns in each group of support column groups is distributed along the axial direction of the gas turbine; one end of each third support column is connected to the gas turbine, and the other end is used to be connected to the common base.

[0018] As a specific solution in the technical solution of the present application, the support assembly further includes a universal joint corresponding to each third support column, and the third support column is connected to the gas turbine through the corresponding universal joint.

[0019] As a specific solution in the technical solution of the present application, the support assembly further includes:

[0020] A first limiting plate and a second limiting plate; during use, the first limiting plate and the second limiting plate are both arranged on the common base; and a limiting chute is formed between the first limiting plate and the second limiting plate; the limiting chute extends along the axial direction of the gas turbine;

[0021] A limiting member; during use, the first end of the limiting member is connected to the gas turbine, and the second end of the limiting member extends into the limiting chute; the limiting chute is used to limit the circumferential rotation of the limiting member around the gas turbine.

[0022] As a specific solution in the technical solution of the present application, the support assembly further includes an elastic member, and the elastic member is arranged between the limiting member and the limiting chute; the elastic member stores elastic potential energy, and the elastic potential energy enables the elastic member to apply a vertically upward jacking force to the limiting member.

[0023] As a specific solution in the technical solution of the present application, the elastic member includes a spring; the support assembly further includes:

[0024] A cushion block, which is provided with a guide hole, and the axis line of the guide hole is parallel to the vertical direction; during use, the cushion block is placed on the common base;

[0025] A guide post, which is arranged at the bottom of the limiting member; the guide post is adapted to the guide hole, the elastic member is sleeved outside the guide post movably, and the elastic member is located between the limiting member and the cushion block.

[0026] As a specific solution in the technical solution of the present application, the limiting member has a block structure, or the limiting member includes a connecting bracket and a limiting bracket, the connecting bracket and the limiting bracket are arranged in sequence in the vertical direction, and the connecting bracket and the limiting bracket form a detachable connection.

[0027] As a specific solution in the technical solution of the present application, the limiting member includes a leveling plate, the leveling plate has at least one plane, and the plane is used to cooperate with a leveling tool to adjust the level of the hot end of the gas turbine.

[0028] In a second aspect, the present application provides a gas turbine unit, which includes the support structure as described in any one of the first aspects.

[0029] Compared with the prior art, the beneficial effects of the present application are as follows:

[0030] Through the arrangement of the first connecting pipe and the second connecting pipe, the present application enables the combination of the first connecting pipe and the second connecting pipe to support the cold end of the gas turbine, providing conditions for directly aligning and splicing the output shaft of the gas turbine and the input shaft of the gearbox. Compared with the prior art, where the position of the gas turbine needs to be repeatedly adjusted to achieve the alignment and splicing of the output shaft of the gas turbine and the input shaft of the gearbox, the support structure proposed in the present application only needs to align and connect the first connecting pipe and the second connecting pipe to realize the transmission connection between the input shaft and the output shaft, with less operation difficulty and lower requirements for the technical level and experience of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 FIG. 18 is a schematic structural diagram of a gas turbine unit in the prior art;

[0032] Figure 2 FIG. 22 is a schematic structural diagram of a gas turbine unit proposed in an embodiment of the present application;

[0033] Figure 3 For Figure 2 a side view schematic diagram (without a common base and a gearbox) of the gas turbine unit in FIG. 28 in the direction A;

[0034] Figure 4 FIG. 32 is a three-dimensional schematic diagram of a limiting component proposed in an embodiment of the present application;

[0035] Figure 5 FIG. 36 is a front view schematic diagram of a limiting component proposed in an embodiment of the present application;

[0036] Figure 6 FIG. 40 is a front view schematic diagram of another limiting component proposed in an embodiment of the present application;

[0037] Figure 7Schematic diagram of a positioning structure proposed in an embodiment of the present application;

[0038] Figure 8 Stereoscopic schematic diagram of another limiting component proposed in an embodiment of the present application.

[0039] In the figure: 1, common base; 2, support base; 21, first support column; 22, second support column; 3, gas turbine; 31, output shaft; 32, first connecting pipe; 321, positioning block; 4, gearbox; 41, input shaft; 42, second connecting pipe; 421, positioning chute; 5, coupling; 6, support assembly; 61, third support column; 62, universal joint; 63, limiting member; 631, connecting bracket; 632, limiting bracket; 633, adjusting plate; 64, first limiting plate; 65, second limiting plate; 66, guiding column; 67, cushion block; 671, guiding hole; 68, elastic member. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0041] It should be noted that in the description of the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0042] In addition, it should be understood that for the convenience of description, the dimensions of each component shown in the accompanying drawings are not drawn in actual proportional relationship. For example, the thickness or width of some layers can be exaggerated relative to other layers.

[0043] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined or described in one drawing, it will not be necessary to further specifically discuss and describe it in the description of the subsequent drawings.

[0044] To solve the technical problem in the prior art in the background art that the operation of forming a transmission connection between the output shaft of the gas turbine and the input shaft of the gearbox in the gas turbine unit by the existing support structure is difficult, the present application proposes a support structure. This support structure is applied to the gas turbine unit. AsFigure 2 As shown in the figure, the gas turbine unit includes a common base 1, a gas turbine 3, and a gearbox 4. During use, both the gas turbine 3 and the gearbox 4 are installed on the common base 1. The output shaft 31 of the gas turbine 3 is in driving connection with the input shaft 41 of the gearbox 4 through a coupling 5.

[0045] In an embodiment of the present application, the support structure includes a first connecting pipe 32, a second connecting pipe 42, and a support assembly 6. Specifically, the first end of the first connecting pipe 32 is used to connect to the cold end of the gas turbine 3. The first end of the second connecting pipe 42 is used to connect to the gearbox 4.

[0046] It should be noted that, in an embodiment of the present application, the first end of the first connecting pipe 32 can be connected to the cold end of the gas turbine 3 in any reasonable manner. For example, the first connecting pipe 32 and the gas turbine 3 can be an integral structure; or the first connecting pipe 32 is welded to the gas turbine 3; or the first connecting pipe 32 is threadedly connected to the gas turbine 3, etc. It should be clear that welding or threading a pipe (i.e., the first connecting pipe 32) to an object (i.e., the gas turbine 3) is a mature technology and will not be elaborated here. Of course, in an embodiment of the present application, the second connecting pipe 42 and the gearbox 4 can also be an integral structure; or welded; or threadedly connected, etc.

[0047] In an embodiment of the present application, the second end of the second connecting pipe 42 is used to connect to the second end of the first connecting pipe 32. After the second connecting pipe 42 and the first connecting pipe 32 are connected, the axis lines of the output shaft 31 and the input shaft 41 coincide. Specifically, the first connecting pipe 32 and the second connecting pipe 42 can be connected in any reasonable manner. For example: in an embodiment of the present application, a first flange (not shown in the figure) is provided at the second end of the first connecting pipe 32, and a second flange (not shown in the figure) is provided at the second end of the second connecting pipe 42. The first connecting pipe 32 and the second connecting pipe 42 are threadedly connected through the first flange and the second flange. It should be clear that threading two pipes (i.e., the first connecting pipe 32 and the second connecting pipe 42) through flanges is a mature technology and will not be elaborated here. Of course, the first connecting pipe 32 and the second connecting pipe 42 can also be welded. In another embodiment of the present application, the second connecting pipe 42 can also be axially movably sleeved outside the first connecting pipe 32, that is, the second connecting pipe 42 forms a movable plug-in connection with the first connecting pipe 32. Of course, in other embodiments of the present application, the second connecting pipe 42 can also be axially movably sleeved inside the first connecting pipe 32, which will not be elaborated here.

[0048] In the embodiments of the present application, after the second connecting pipe 42 is connected to the first connecting pipe 32 in any reasonable manner, the axis lines of the output shaft 31 and the input shaft 41 will coincide. For example, in one embodiment of the present application, the axis line of the first connecting pipe 32 coincides with the axis line of the output shaft 31; the axis line of the second connecting pipe 42 coincides with the axis line of the input shaft 41. During the connection process of the first connecting pipe 32 and the second connecting pipe 42, as long as the first connecting pipe 32 and the second connecting pipe 42 are aligned (i.e., the axis lines of the first connecting pipe 32 and the second connecting pipe 42 coincide), the axis lines of the output shaft 31 and the input shaft 41 will definitely coincide. In another embodiment of the present application, the axis line of the first connecting pipe 32 (hereinafter referred to as the first axis line) is parallel to the axis line of the output shaft 31 (hereinafter referred to as the second axis line). When the gas turbine 3 is in a horizontal state, the distance vector between the first axis line and the second axis line is defined as the first vector, and the first vector points from the first axis line to the second axis line. In this embodiment, the axis line of the second connecting pipe 42 (hereinafter referred to as the third axis line) is parallel to the axis line of the input shaft 41 (hereinafter referred to as the fourth axis line). When the transmission 4 is in a horizontal state, the distance vector between the third axis line and the fourth axis line is defined as the second vector, and the second vector points from the third axis line to the fourth axis line. In this embodiment, the first vector and the second vector are equal, that is, the magnitudes and directions of the first vector and the second vector are the same. Since the first vector and the second vector are equal, during the connection process of the first connecting pipe 32 and the second connecting pipe 42, as long as the first connecting pipe 32 and the second connecting pipe 42 are aligned (i.e., the axis lines of the first connecting pipe 32 and the second connecting pipe 42 coincide), the axis lines of the output shaft 31 and the input shaft 41 will definitely coincide.

[0049] In the embodiments of the present application, after the first connecting pipe 32 is connected to the second connecting pipe 42, the first connecting pipe 32 and the second connecting pipe 42 can support the cold end of the gas turbine 3. The support assembly 6 is arranged at the hot end of the gas turbine 3 and is used to support the hot end of the gas turbine 3.

[0050] In the embodiments of the present application, the coupling 5 can be any kind of coupling on the market. To facilitate the formation of a transmission connection between the input shaft 41 and the output shaft 31 through the coupling 5, in one embodiment of the present application, the coupling 5 can be a plug-in coupling. For example, the coupling 5 can be a spline sleeve coupling or an elastic pin coupling. It should be noted that if the coupling 5 can be a spline sleeve coupling or an elastic pin coupling, then as long as the first connecting pipe 32 and the second connecting pipe 42 are aligned and connected, the input shaft 41 and the output shaft 31 can be formed into a transmission connection, and the specific principle is described below.

[0051] During use, if it is necessary to form a transmission connection between the output shaft 31 of the gas turbine 3 and the input shaft 41 of the transmission 4, such asFigure 2 As shown, first, the transmission 4 is installed on the common base 1, and the transmission 4 is leveled (prior art, not elaborated). Then, the coupling 5 (such as a spline sleeve coupling or an elastic pin coupling) is sleeved on the input shaft 41 of the transmission 4. Further, a lifting tool (such as a traveling crane or a hoist) is used to lift the gas turbine 3. Further, the output shaft 31 of the gas turbine 3 is aligned with the coupling 5, and the output shaft 31 and the coupling 5 are sleeved together, that is, the input shaft 41 and the output shaft 31 are in transmission connection. Further, the first connecting pipe 32 is connected to the second connecting pipe 42 so that the first connecting pipe 32 and the second connecting pipe 42 can support the cold end of the gas turbine 3, that is, it can avoid the phenomenon that the transmission connection between the input shaft 41 and the output shaft 31 is damaged due to excessive force between the input shaft 41 and the output shaft 31 during the subsequent installation of the gas turbine 3. Finally, the gas turbine 3 is placed on the common base 1, and the gas turbine 3 is leveled and installed (prior art, not elaborated).

[0052] It should be clear that in the embodiment of the support structure proposed in this application, through the arrangement of the first connecting pipe and the second connecting pipe, the combination of the first connecting pipe and the second connecting pipe can support the cold end of the gas turbine, providing conditions for the direct centering and splicing of the output shaft of the gas turbine and the input shaft of the transmission. Compared with the prior art that requires repeated adjustment of the position of the gas turbine to make the output shaft of the gas turbine and the input shaft of the transmission form a centering splice, the support structure proposed in this application only needs to align and connect the first connecting pipe and the second connecting pipe to achieve the transmission connection between the input shaft and the output shaft, with less operation difficulty and low requirements for the technical level and experience of the operator.

[0053] In the embodiment of this application, there is no restriction on the type of the coupling 5, as long as the coupling 5 can make the output shaft 31 and the input shaft 41 form a transmission connection.

[0054] As can be seen from the foregoing, in the embodiment of this application, as long as the first connecting pipe 32 and the second connecting pipe 42 are aligned, the output shaft 31 and the input shaft 41 can be centered (that is, the axis lines of the output shaft 31 and the input shaft 41 coincide). To facilitate the alignment of the first connecting pipe 32 and the second connecting pipe 42, in the embodiment of this application, a positioning structure can also be provided between the first connecting pipe 32 and the second connecting pipe 42. The positioning structure is used for positioning and aligning the first connecting pipe 32 and the second connecting pipe 42.

[0055] In the embodiment of this application, the positioning structure can be any structure that assists in positioning and aligning the first connecting pipe 32 and the second connecting pipe 42. For example, the positioning structure can be at least as shown in the following two embodiments.

[0056] The first embodiment of the positioning structure

[0057] In the embodiment, the first connecting pipe 32 and the second connecting pipe 42 can be connected through the first flange and the second flange. The positioning structure can be a positioning hole provided on the first flange and a positioning pin provided on the second flange. Of course, in other embodiments of the present application, the positioning hole can be provided on the second flange and the positioning pin can be provided on the first flange. It should be clear that positioning and alignment through the positioning hole and the positioning pin are mature technologies and will not be elaborated here.

[0058] The second embodiment of the positioning structure

[0059] In this embodiment, the second connecting pipe 42 is axially movably sleeved outside the first connecting pipe 32. As Figure 7 shown, the positioning structure can be a positioning chute 421 provided on the inner side wall of the second connecting pipe 42 and a positioning block 321 provided on the outer side wall of the first connecting pipe 32. Among them, the positioning chute 421 extends along the axial direction of the second connecting pipe 42, and the positioning block 321 is adapted to the positioning chute 421.

[0060] In this embodiment, the fact that the positioning block 321 is adapted to the positioning chute 421 means that after the positioning block 321 slides into the positioning chute 421, the first connecting pipe 32 and the second connecting pipe 42 cannot generate relative circumferential rotation and can only generate relative axial displacement.

[0061] Of course, in this embodiment, the positioning chute 421 can also be provided on the outer side wall of the second connecting pipe 42, and the positioning block 321 is provided on the inner side wall of the first connecting pipe 32.

[0062] Of course, in this embodiment, the second connecting pipe 42 can also be axially movably sleeved inside the first connecting pipe 32. The setting of the positioning block 321 and the positioning chute 421 can refer to the above, and will not be listed and elaborated here. Thus, the second embodiment of the positioning structure is introduced.

[0063] It should be clear that in the embodiments of the present application, there are no restrictions on the support assembly 6, as long as the support assembly 6 can support the hot end of the gas turbine 3. For example, the support assembly 6 can be a support seat 2 in the prior art.

[0064] It should be noted that the support base 2 of the prior art has a relatively large number of connection points formed with the gas turbine 3 (i.e., a relatively large number of support columns). During the operation of the gas turbine 3, it is thermally deformed, and the relatively large number of connection points will limit the deformation of the gas turbine 3, thereby generating a relatively large thermal stress between the gas turbine 3 and the support base 2. In order to simplify the overall structure of the support assembly 6 and make the thermal stress formed between the support assembly 6 and the gas turbine 3 relatively small, in an embodiment of the present application, the support assembly 6 may include two groups of support column groups. One group of support column groups is used to support one side of the gas turbine 3, and the other group of support column groups is used to support the other side of the gas turbine 3. As Figure 3 shown, each group of support column groups includes at least one third support column 61, and each of the third support columns 61 in each group of support column groups is distributed along the axial direction of the gas turbine 3. One end of each third support column 61 is connected to the gas turbine 3, and the other end is used to be connected to the common base 1 (the common base 1 is not shown in the figure).

[0065] In the embodiment of the present application, the number of the third support columns 61 in the support column group can be set according to requirements. For example, if the gas turbine 3 is relatively small, the support column group may only include one third support column 61; if the gas turbine 3 is relatively large, the support column group may include multiple third support columns 61. When the support strength can be satisfied, the number of the third support columns 61 in the support column group is preferably 1.

[0066] In the embodiment of the present application, the support assembly 6 only includes two third support columns 61, which has a simple structure, a relatively small number of connection points formed with the gas turbine 3, and will not generate a relatively large thermal stress on the gas turbine 3 during use.

[0067] In the embodiment of the present application, the third support column 61 can be connected to the gas turbine 3 in any reasonable manner. For example, the third support column 61 can be connected to the gas turbine 3 by bolts or welding.

[0068] It should be noted that when the gas turbine 3 is in a high operating condition, its hot end temperature is relatively high. If the hot end temperature of the gas turbine 3 is relatively high, its hot end will undergo radial and axial deformations. If the third support column 61 is connected to the gas turbine 3 by bolts or welding, these deformations will cause the thermal stress at the hot end of the gas turbine 3 to be too large. In order to further reduce these thermal stresses, in an embodiment of the present application, the support assembly 6 further includes a universal joint 62 corresponding to each third support column 61, and the third support column 61 is connected to the gas turbine 3 through the corresponding universal joint 62.

[0069] It should be clear that forming a flexible connection between two components (i.e., the third support column 61 and the gas turbine 3) through a universal joint is a mature technology and will not be elaborated here.

[0070] In an embodiment of the present application, the universal joint 62 can be any suitable universal joint. For example, the universal joint 62 can be a cardan shaft type universal joint or a ball joint type universal joint, etc.

[0071] It should be noted that since the third support column 61 is flexibly connected to the gas turbine 3 through the universal joint 62, the hot end of the gas turbine 3 has a certain deformation margin. Even if the hot end of the gas turbine 3 generates radial deformation or axial deformation, no large thermal stress will be formed between the third support column 61 and the gas turbine 3.

[0072] In the case where the third support column 61 is flexibly connected to the gas turbine 3, in order to prevent the gas turbine 3 from generating relative circumferential rotation (relative to the transmission 4), in an embodiment of the present application, the support assembly 6 further includes a first limiting plate 64, a second limiting plate 65, and a limiting member 63 (the combination of the first limiting plate 64, the second limiting plate 65, and the limiting member 63 is simply referred to as the limiting assembly). In use, both the first limiting plate 64 and the second limiting plate 65 are arranged on the common base 1, and a limiting chute is formed between the first limiting plate 64 and the second limiting plate 65. The limiting chute extends along the axial direction of the gas turbine 3. In use, as Figure 3 shown, the first end of the limiting member 63 is connected to the gas turbine 3, and the second end of the limiting member 63 extends into the limiting chute, and the limiting chute is used to limit the circumferential rotation of the limiting member 63 around the gas turbine 3. Since the limiting member 63 is connected to the gas turbine 3, if the limiting member 63 cannot rotate circumferentially around the gas turbine 3, the gas turbine 3 itself cannot generate circumferential rotation either.

[0073] The gas turbine 3 will generate vibration during use. In order to be able to damp the vibration of the gas turbine 3, in an embodiment of the present application, the support assembly 6 further includes an elastic member 68, and the elastic member 68 is arranged between the limiting member 63 and the limiting chute. The elastic member 68 stores elastic potential energy, and the elastic potential energy enables the elastic member 68 to apply a vertically upward jacking force (i.e., the direction B as Figure 3 shown) to the limiting member 63, that is, to apply a vertically upward jacking force to the gas turbine 3.

[0074] In use, since the elastic member 68 applies a vertically upward jacking force to the gas turbine 3, the elastic member 68 can suppress the generation of vibration of the gas turbine 3. Even if the gas turbine 3 generates vibration, the elastic member 68 will be compressed during the vibration of the gas turbine 3, that is, the elastic member 68 absorbs part of the vibration energy, thereby reducing the vibration amplitude and vibration frequency of the gas turbine 3.

[0075] In an embodiment of the present application, there are no restrictions on the shape and structure of the elastic member 68, as long as the elastic member 68 can apply a vertically upward jacking force to the limiting member 63. For example, the elastic member 68 can be an elastic metal sheet, or can be a spring, etc.

[0076] As described above, during the use of the hot end of the gas turbine 3, axial and radial deformations will occur. In order to avoid, during long-term use, the relative position between the elastic member 68 and the gas turbine 3 changing due to the repeated deformation of the gas turbine 3, or the direction of the elastic force generated by the elastic member 68 changing, in an embodiment of the present application, the elastic member 68 can be a disc spring. The support assembly 6 further includes a cushion block 67 and a guide post 66. During use, the cushion block 67 is placed on the common base 1. As Figure 5 and Figure 6 shown, the cushion block 67 is provided with a guide hole 671, and the axis line of the guide hole 671 is parallel to the vertical direction (i.e., the direction B as Figure 3 shown). The guide post 66 is provided at the bottom of the limiting member 63, and the guide post 66 is adapted to the guide hole 671. The elastic member 68 is movably sleeved outside the guide post 66, and the elastic member 68 is located between the limiting member 63 and the cushion block 67.

[0077] In the embodiment of the present application, the guide post 66 being adapted to the guide hole 671 means that after the guide post 66 is inserted into the guide hole 671, the guide post 66 cannot generate radial sway along it. That is to say, the outer diameter of the guide post 66 is equal to the inner diameter of the guide hole 671, or the outer diameter of the guide post 66 is slightly smaller than the inner diameter of the guide hole 671. For example, the outer diameter of the guide post 66 can be 0.1 mm or 0.5 mm smaller than the inner diameter of the guide hole 671, etc.

[0078] It should be clear that, in the embodiment of the present application, through the arrangement of the guide post 66 and the cushion block 67, if the hot end of the gas turbine 3 deforms, the guide post 66 can move accordingly. Since the guide post 66 is inserted into the guide hole 671 of the cushion block 67, and the elastic member 68 (i.e., the disc spring) is sleeved outside the guide post 66, if the guide post 66 moves horizontally with the gas turbine 3, the cushion block 67 and the elastic member 68 can also move horizontally accordingly. That is to say, the relative position between the elastic member 68 and the gas turbine 3 can always be kept fixed. Since the axis line of the guide post 66 is parallel to the vertical direction, under the guiding action of the guide post 66, the jacking force exerted by the elastic member 68 on the gas turbine 3 (i.e., the limiting member 63) is always vertically upward, that is, the direction of the elastic force generated by the elastic member 68 will not change.

[0079] In order to further enhance the vibration damping function of the elastic member 68, in an embodiment of the present application, the guide post 66 can be a damping post, and the damping post is mainly used to generate damping for the rebound of the elastic member 68, that is, to inhibit the rebound of the elastic member 68 after being compressed. Since the damping post can inhibit the rebound of the elastic member 68, the vibration of the gas turbine 3 can be further reduced. The damping post is a mature technology and will not be elaborated here.

[0080] In the embodiment of the present application, there is no limitation on the shape and structure of the stopper 63. Figure 6 As shown in block structure, it can also be Figure 8 In order to facilitate installation, the guide column 66, the cushion block 67 and the elastic member 68 are spliced ​​together and installed to the hot end of the gas turbine 3. In one embodiment of the present application, as shown in FIG. Figure 4 and Figure 5 As shown, the limiting member 63 includes a connecting bracket 631 and a limiting bracket 632 , which are arranged in sequence along the vertical direction, and the connecting bracket 631 and the limiting bracket 632 form a detachable connection.

[0081] When in use, the elastic member 68 can be first sleeved on the outside of the guide column 66, and then the guide column 66 can be inserted into the guide hole 671 of the pad 67. Further, the assembled whole can be pushed into the limiting groove formed between the first limiting plate 64 and the second limiting plate 65, and finally the connecting bracket 631 and the limiting bracket 632 can be connected.

[0082] In the embodiment of the present application, the connecting bracket 631 and the limiting bracket 632 can be detachably connected in any reasonable manner, for example: Figure 4 and Figure 5 As shown, the connecting bracket 631 and the limiting bracket 632 can be connected by bolts, or the connecting bracket 631 and the limiting bracket 632 can be detachably connected by a quick buckle. It should be understood that the detachable connection of two objects (i.e., the connecting bracket 631 and the limiting bracket 632) by a quick buckle is a mature technology and will not be described in detail here.

[0083] As can be seen from the foregoing, in the embodiment of the present application, the gas turbine 3 needs to be leveled. In order to facilitate the leveling operation of the gas turbine 3, in one embodiment of the present application, Figure 8 As shown, the limiting member 63 may further include an adjustment plate 633 , and the adjustment plate 633 has at least one plane, and the plane is used to cooperate with a leveling tool to adjust the horizontality of the hot end of the gas turbine 3 .

[0084] In the embodiment of the present application, the leveling tool may be a bubble level or a laser level, etc. It should be understood that it is a mature technology to adjust the equipment (ie, the gas turbine 3) to a horizontal position based on a certain plane by means of a leveling tool, which will not be described in detail here.

[0085] In the embodiment of the support structure proposed in this application, through the arrangement of the first connecting pipe and the second connecting pipe, the combination of the first connecting pipe and the second connecting pipe can support the cold end of the gas turbine, providing conditions for directly aligning and splicing the output shaft of the gas turbine and the input shaft of the gearbox. Compared with the prior art that requires repeated adjustment of the position of the gas turbine to make the output shaft of the gas turbine and the input shaft of the gearbox form an aligned splice, the support structure proposed in this application only needs to align and connect the first connecting pipe and the second connecting pipe to achieve the transmission connection between the input shaft and the output shaft, with relatively low operation difficulty and low requirements for the technical level and experience of the operator.

[0086] After introducing the support structure proposed in the embodiment of this application, the following introduces an embodiment of a gas turbine unit proposed in this application. The gas turbine unit includes the support structure proposed in any one of the above embodiments.

[0087] In the embodiment of the gas turbine unit proposed in this application, its support structure, through the arrangement of the first connecting pipe and the second connecting pipe, enables the combination of the first connecting pipe and the second connecting pipe to support the cold end of the gas turbine, providing conditions for directly aligning and splicing the output shaft of the gas turbine and the input shaft of the gearbox. Compared with the prior art that requires repeated adjustment of the position of the gas turbine to make the output shaft of the gas turbine and the input shaft of the gearbox form an aligned splice, the support structure proposed in this application only needs to align and connect the first connecting pipe and the second connecting pipe to achieve the transmission connection between the input shaft and the output shaft, with relatively low operation difficulty and low requirements for the technical level and experience of the operator.

[0088] Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A support structure, applied to a gas turbine unit, the gas turbine unit comprising a common base (1), a gas turbine (3) and a gearbox (4); the gas turbine (3) and the gearbox (4) are mounted on the common base (1); an output shaft (31) of the gas turbine (3) is in transmission connection with an input shaft (41) of the gearbox (4) via a coupling (5), characterized in that: The coupling (5) is a plug-in coupling; the supporting structure comprises: a first connecting pipe (32); a first end of the first connecting pipe (32) being used for connecting to a cold end of the gas turbine (3); a second connecting tube (42); a first end of the second connecting tube (42) is used to be connected to the gearbox (4); a second end of the second connecting tube (42) is used to be connected to the second end of the first connecting tube (32); after the second connecting tube (42) is connected to the first connecting tube (32), the axis center lines of the output shaft (31) and the input shaft (41) coincide with each other; A support assembly (6) is used to support at least the hot end of the gas turbine (3).

2. The support structure according to claim 1, characterized in that: The coupling (5) is a spline sleeve coupling or an elastic pin coupling.

3. The support structure according to claim 1, characterized in that: A positioning structure is also provided between the first connecting tube (32) and the second connecting tube (42), and the positioning structure is used for positioning and aligning the first connecting tube (32) and the second connecting tube (42).

4. The support structure according to claim 3, characterized in that: The positioning structure comprises: A first flange is arranged at the second end of the first connecting pipe (32); the first flange is provided with a positioning hole; A second flange is arranged at the second end of the second connecting pipe (42); the second flange is provided with a positioning pin, and the first flange and the second flange are positioned and aligned through the positioning hole and the positioning pin; Alternatively, the second connecting tube (42) is movably sleeved on the outside of the first connecting tube (32) along the axial direction; the positioning structure comprises a positioning slot (421) provided on the inner wall of the second connecting tube (42) and a positioning block (321) provided on the outer wall of the first connecting tube (32); the positioning slot (421) extends along the axial direction of the second connecting tube (42); the positioning block (321) is adapted to the positioning slot (421); Alternatively, the second connecting tube (42) is axially movably sleeved inside the first connecting tube (32); the positioning structure comprises a positioning groove (421) arranged on the outer wall of the second connecting tube (42) and a positioning block (321) arranged on the inner wall of the first connecting tube (32); the positioning groove (421) extends along the axial direction of the second connecting tube (42); and the positioning block (321) is adapted to the positioning groove (421).

5. The support structure according to claim 1, characterized in that: The support assembly (6) comprises two groups of support column groups; one group of support column groups is used to support one side of the gas turbine (3); the other group of support column groups is used to support the other side of the gas turbine (3); each group of support column groups comprises at least one third support column (61); each third support column (61) in each group of support column groups is distributed along the axial direction of the gas turbine (3); one end of each third support column (61) is connected to the gas turbine (3), and the other end is used to connect to the common base (1).

6. The support structure according to claim 5, characterized in that: The support assembly (6) further comprises a universal joint (62) corresponding one-to-one to each third support column (61), and the third support column (61) is connected to the gas turbine (3) via the corresponding universal joint (62).

7. The support structure according to any one of claims 1 to 6, characterized in that: The support assembly (6) further comprises: a first limiting plate (64) and a second limiting plate (65); when in use, the first limiting plate (64) and the second limiting plate (65) are both arranged on the common base (1); and a limiting sliding groove is formed between the first limiting plate (64) and the second limiting plate (65); the limiting sliding groove extends along the axial direction of the gas turbine (3); A limiting member (63); when in use, the first end of the limiting member (63) is connected to the gas turbine (3), and the second end of the limiting member (63) extends to the limiting slide groove; the limiting slide groove is used to limit the circumferential rotation of the limiting member (63) around the gas turbine (3).

8. The support structure according to claim 7, characterized in that: The support assembly (6) further comprises an elastic member (68), wherein the elastic member (68) is arranged between the limiting member (63) and the limiting slide groove; the elastic member (68) stores elastic potential energy, and the elastic potential energy enables the elastic member (68) to apply a vertical upward lifting force to the limiting member (63).

9. The support structure according to claim 8, characterized in that: The elastic member (68) comprises a spring; the support assembly (6) further comprises: A cushion block (67), wherein the cushion block (67) is provided with a guide hole (671), and the axis of the guide hole (671) is parallel to the vertical direction; when in use, the cushion block (67) is placed on the common base (1); A guide column (66) is arranged at the bottom of the limiting member (63); the guide column (66) is matched with the guide hole (671), the elastic member (68) is movably sleeved on the outside of the guide column (66), and the elastic member (68) is located between the limiting member (63) and the cushion block (67).

10. A gas turbine unit, characterized in that: Comprising a support structure as claimed in any one of claims 1 to 9.

Images