A gas turbine connecting piece

Abstract

The utility model provides a kind of gas turbine connecting piece, the gas turbine includes first cylinder part, second cylinder part and connecting piece, the first cylinder part and the second cylinder part are at least connected each other by the connecting piece, the first cylinder part includes first connecting groove, the second cylinder part includes second connecting groove, the first connecting groove and the second connecting groove are located the first cylinder part and the second cylinder part connecting face, part connecting piece is clamped in the inside of the first connecting groove, part connecting piece is clamped in the inside of the second connecting groove.Application the utility model, can save the radial space of first cylinder and second cylinder part connecting face, solve the technical problem that the bolt is easily interfered between due to small radial space.

Description

Technical Field

[0001] This utility model relates to the field of gas turbine technology, specifically to a gas turbine connector. Background Technology

[0002] The structure of a gas turbine compressor test piece mainly includes an inlet chamber, an inlet cylinder, a compressor cylinder, and an exhaust cylinder. Air enters the inlet cylinder through the inlet chamber, then enters the compressor cylinder where it is pressurized by the blades, and finally exits through the exhaust cylinder. When the airflow passes through the inlet cylinder, the diameter of the inner flow channel contracts significantly at the rear of the inner ring, then gradually flattens and expands. The upper half of the inner ring of the inlet cylinder is relatively close to the bearing housing cover. The bearing housing cover and the lower half of the inner ring of the inlet cylinder are assembled and connected at the horizontal split surface, jointly providing support and necessary lubrication chambers for the bearings and rotor. To prevent lubrication oil from overflowing along the split surface, a track groove is usually provided at the split surface of the lower half of the inner ring of the inlet cylinder, with a sealing strip inside. When the bearing housing cover and the lower half of the inner ring of the inlet cylinder are assembled and connected at the horizontal split surface by screws, the split surface of the bearing housing cover presses against the sealing strip to achieve a seal. The sealing track groove and the screw holes on the split surface are distributed radially, with the track groove on the inside and the screw holes on the outside. The screw holes on the bearing housing cover are usually located on the bearing housing cover flange.

[0003] In the prior art, CN114856821A discloses a bearing housing and a gas turbine. The bearing housing includes two housing bodies that meet at a mid-plane. At least one of the housing bodies has a sealing groove at the mid-plane. Each housing body has an air inlet hole, the inlet end of which penetrates the outer surface of the housing body, and the outlet end of which penetrates the sealing groove, allowing sealing gas to be delivered into the sealing groove through the air inlet hole. The gas turbine includes the bearing housing. By creating a sealing groove at the mid-plane of the bearing housing and continuously supplying sealing gas into the sealing groove, with the sealing gas pressure exceeding the internal pressure of the bearing housing, the high-pressure flow of the sealing gas in the gap between the mid-planes prevents the leakage of lubricating oil, oil fumes, and oil mist from inside the bearing housing through the mid-plane.

[0004] However, the existing technical solutions have the following technical problems: when the inner flow channel at the rear of the intake cylinder contracts significantly or the overall bearing position is adjusted backward, the space in the radial direction is very limited, which easily leads to interference. Because it is necessary to simultaneously meet the radial space requirements of the chamber, the radial distribution requirements of the guide groove followed by the screw holes, and the space requirement of the bearing housing cover flange and the inner ring of the intake cylinder not interfering with each other, interference will occur when the inner flow channel contracts significantly or the overall bearing position is adjusted backward. Utility Model Content

[0005] The purpose of this invention is to solve the aforementioned technical problems.

[0006] To achieve the above objectives, this utility model proposes a gas turbine connector. The gas turbine includes a first cylinder section, a second cylinder section, and a connector. The first cylinder section and the second cylinder section are connected to each other at least through the connector. The first cylinder section includes a first connecting groove, and the second cylinder section includes a second connecting groove. Both the first connecting groove and the second connecting groove are located on the connecting surface of the first cylinder section and the second cylinder section. Part of the connector is engaged inside the first connecting groove, and part of the connector is engaged inside the second connecting groove.

[0007] Furthermore, the first connecting groove, the second connecting groove, and the connecting member all extend along the axial direction of the gas turbine. The connecting member includes a first connecting portion and a second connecting portion, which are directly or indirectly connected. At least a portion of the first connecting portion is located inside the first connecting groove, and at least a portion of the second connecting portion is located inside the second connecting groove.

[0008] Furthermore, the width of the first connecting portion is greater than the width of the first connecting groove opening, and the width of the second connecting portion is greater than the width of the second connecting groove opening.

[0009] Furthermore, the width of the bottom surface of both the first connecting groove and the second connecting groove is greater than the width of the opening.

[0010] Furthermore, the connector also includes a third connecting portion, through which the first connecting portion and the second connecting portion are connected.

[0011] Furthermore, the connector, the first connecting groove, and the second connecting groove all extend to a first end face formed by the first cylinder portion and the second cylinder portion and perpendicular to the axial direction of the gas turbine.

[0012] Furthermore, the gas turbine also includes a fixing member located on the first end face, which restricts the sliding of the connecting member along the direction of the second connecting groove.

[0013] Furthermore, the second cylinder portion also includes a fixing hole located on the first end face, and the fixing member is fixed to the second cylinder portion through the fixing hole.

[0014] Furthermore, the fastener is a bolt, the fixing hole further includes a first mating part, the connector further includes a second mating part, the first mating part and the second mating part are both grooves, the first mating part and the second mating part are both located on the first end face, a part of the head of the fastener is located in the first mating part, and another part of the head of the fastener is located in the second mating part.

[0015] Furthermore, the gas turbine also includes a first seal that extends axially along the gas turbine and is located between the wall of the second connecting groove and the wall of the third connecting portion.

[0016] Furthermore, the second cylinder section also includes a first sealing groove, which is located on the wall of the second connecting groove and extends along the axial direction of the gas turbine. At least a portion of the first seal is located inside the first sealing groove.

[0017] Furthermore, the gas turbine also includes connecting bolts; along the axial direction of the gas turbine, a portion of the first cylinder section and a portion of the second cylinder section are connected by the connecting member, and a portion of the first cylinder section and a portion of the second cylinder section are connected by the connecting bolts.

[0018] Furthermore, the gas turbine also includes a second seal, and the second cylinder portion further includes a second sealing groove. The second sealing groove is located on the length segment where the first cylinder portion and the second cylinder portion are connected by the connecting bolt. The second sealing groove is located on the connection surface of the first cylinder portion and the second cylinder portion, and the second seal is at least partially located in the second sealing groove.

[0019] Furthermore, the gas turbine includes multiple connecting members, which are located at different axial positions of the gas turbine and are detachably connected to each other.

[0020] Furthermore, the first cylinder section is a bearing housing cover, the second cylinder section is the lower half inner ring of the intake cylinder, and the connecting surface between the first cylinder section and the second cylinder section is the mid-section of the intake cylinder.

[0021] By applying the above-described technical solution of this utility model, at least the following technical effects are achieved:

[0022] 1. In this utility model, the first cylinder section and the second cylinder section are connected by the connecting member, which saves radial space and solves the technical problem that the small radial space causes easy interference between bolts.

[0023] 2. In this utility model, the first cylinder section and the second cylinder section are connected by multiple connecting members, and the multiple connecting members are detachably connected to each other, which facilitates the assembly of the connecting members into the first connecting groove and the second connecting groove.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 A schematic diagram of the position of the connector in one embodiment is shown;

[0027] Figure 2 Showed Figure 1 Enlarged image of the letter "A" in the image;

[0028] Figure 3 A left view of the second cylinder section in one embodiment is shown;

[0029] Figure 4 A right view of the second cylinder section in one embodiment is shown;

[0030] Figure 5 A structural schematic diagram of the connector in one embodiment is shown;

[0031] Figure 6 A schematic diagram of the connection hole in one embodiment is shown;

[0032] Figure 7 A schematic diagram of the connecting pin in one embodiment is shown;

[0033] Figure 8 A structural schematic diagram of the connecting bolt in one embodiment is shown;

[0034] Figure 9 A structural schematic diagram of the fastener in one embodiment is shown;

[0035] Figure 10 A schematic diagram of the structure of the second seal in one embodiment is shown;

[0036] Figure 11 A schematic diagram of the structure of the first connecting groove in one embodiment is shown;

[0037] Figure 12 A schematic diagram of the intake cylinder and bearing housing cover structure in one embodiment is shown.

[0038] Reference numerals: 1. First cylinder section; 11. First connecting groove; 2. Second cylinder section; 21. Second connecting groove; 22. Fixing hole; 23. First mating part; 24. First sealing groove; 25. Second sealing groove; 3. Seal; 31. First connecting part; 32. Second connecting part; 33. Third connecting part; 34. Connecting pin; 35. Connecting hole; 36. Second mating part; 4. Fixing member; 5. First sealing member; 6. Connecting bolt; 7. Second sealing member. Detailed Implementation

[0039] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] The present invention will be further described in detail below with reference to specific embodiments. These embodiments should not be construed as limiting the scope of protection claimed by the present invention.

[0041] Example

[0042] According to one aspect of this utility model, a gas turbine connecting component is provided, such as... Figure 1-2 and Figure 12 As shown, the gas turbine includes a first cylinder section 1, a second cylinder section 2, and a connecting member 3. The first cylinder section 1 and the second cylinder section 2 are connected to each other at least through the connecting member 3. The first cylinder section 1 includes a first connecting groove 11, and the second cylinder section 2 includes a second connecting groove 21. The first connecting groove 11 and the second connecting groove 21 are both located on the connecting surface of the first cylinder section 1 and the second cylinder section 2. Part of the connecting member 3 is engaged inside the first connecting groove 11, and part of the connecting member 3 is engaged inside the second connecting groove 21.

[0043] Specifically, the first cylinder section 1 is a bearing housing cover, the second cylinder section 2 is the lower half inner ring of the intake cylinder, and the connecting surface between the first cylinder section 1 and the second cylinder section 2 is the mid-section of the intake cylinder.

[0044] The first connecting groove 11, the second connecting groove 21, and the connecting member 3 all extend along the axial direction of the gas turbine. The connecting member 3 includes a first connecting portion 31, a second connecting portion 32, and a third connecting portion 33. The first connecting portion 31 and the second connecting portion 32 are connected through the third connecting portion 33. At least a portion of the first connecting portion 31 is located inside the first connecting groove 11, and at least a portion of the second connecting portion 32 is located inside the second connecting groove 21. The width of the first connecting portion 31 is greater than the width of the opening of the first connecting groove 11, and the width of the second connecting portion 32 is greater than the width of the opening of the second connecting groove 21. The width of the bottom surface of both the first connecting groove 11 and the second connecting groove 21 is greater than the width of their openings.

[0045] Specifically, on a plane perpendicular to the gas turbine axis, the cross-sections of the first connecting portion 31, the second connecting portion 32, and the third connecting portion 33 are all rectangular. More specifically, in this embodiment, on a plane perpendicular to the gas turbine axis, the cross-section of the connecting member 3 and the groove cross-section formed by the first connecting groove 11 and the second connecting groove 21 are all I-shaped.

[0046] In other embodiments, on a plane perpendicular to the axial direction of the gas turbine, the cross-section of the connecting member 3 may also be a "tu"-shape, a "shang"-shape, etc., and correspondingly, the cross-section of the groove jointly formed by the first connecting groove 11 and the second connecting groove 21 may also be a "tu"-shape, a "shang"-shape, etc.

[0047] In still other embodiments, the connecting member 3 may not be provided with the third connecting portion 33, and the first connecting portion 31 and the second connecting portion 32 are directly connected.

[0048] As shown in Figure 1-4 , the connecting member 3, the first connecting groove 11 and the second connecting groove 21 all extend to the first end face that is jointly formed by the first cylinder portion 1 and the second cylinder portion 2 and is perpendicular to the axial direction of the gas turbine.

[0049] As shown in Figure 1-2 and Figure 9 , the gas turbine further comprises a fixing member 4, the fixing member 4 is arranged on the first end face, and the fixing member 4 can restrict the connecting member 3 from sliding along the extending direction of the second connecting groove 21. The second cylinder portion 2 further comprises a fixing hole 22, the fixing hole 22 is arranged on the first end face, and the fixing member 4 is fixed to the second cylinder portion 2 through the fixing hole 22.

[0050] Specifically, as shown in Figure 3-5 , the fixing member 4 is a bolt, the fixing hole 22 further comprises a first matching portion 23, the connecting member 3 further comprises a second matching portion 36, the first matching portion 23 and the second matching portion 36 are both grooves, the first matching portion 23 and the second matching portion 36 are both arranged on the first end face, a part of the head of the fixing member 4 is located in the first matching portion 23, and the other part of the head of the fixing member 4 is located in the second matching portion 36. More specifically, the connecting member 3 is fixed to the first end face by two fixing members 4, and the two fixing members 4 are respectively located on two sides of the second connecting groove 21.

[0051] As shown in Figure 2-4 , the gas turbine further comprises a first sealing member 5, the first sealing member 5 extends along the axial direction of the gas turbine, and the first sealing member 5 is arranged between the wall surface of the second connecting groove 21 and the wall surface of the third connecting portion 33. The second cylinder portion 2 further comprises a first sealing groove 24, the first sealing groove 24 is arranged on the wall surface of the second connecting groove 21, the first sealing groove 24 extends along the axial direction of the gas turbine, and at least part of the first sealing member 5 is located inside the first sealing groove 24.

[0052] Specifically, the first sealing groove 24 is located on the wall surface of the second connecting groove 21 on the side close to the axis of the cylinder. As shown in Figure 5As shown, the inner walls of both second mating parts 36 are conical surfaces. The inner wall of the second mating part 36 located on the side of the second connecting groove 21 away from the cylinder axis is a first conical surface, and the inner wall of the second mating part 36 located on the side of the second connecting groove 21 closer to the cylinder axis is a second conical surface. The center of the first conical surface is located outside the second connecting part 32, and the center of the second conical surface is located within the second connecting part 32. When the fixing member 4 is fixed to the first end face through the fixing hole 22, the first conical surface can apply force along the circumferential and radial directions of the cylinder wall to the connecting member 3 to compress the first sealing member 5 and achieve a seal. Simultaneously, the fixing member 4 applies force along the circumferential direction of the cylinder wall only to the connecting member 3 through the second conical surface, thereby ensuring sufficient compression between the connecting member 3 and the first sealing member 5 and the inner wall of the second connecting groove 21. During installation, the fixing member 4 corresponding to the first end face is installed first, followed by the fixing member 4 corresponding to the second end face.

[0053] More specifically, such as Figure 11 As shown, gaps are provided between the connector 3 and the first connecting groove 11, and between the connector 3 and the second connecting groove 21, to facilitate the installation of the connector 3.

[0054] like Figure 6-7 As shown, the gas turbine includes multiple connecting parts 3, which are located at different axial positions within the gas turbine and are detachably connected. Specifically, the connecting parts 3 have different lengths, and can be divided into long connecting parts and short connecting parts, to address the problem of insufficient axial space when the connecting parts 3 are installed along the axial direction of the gas turbine into the first connecting groove 11 and the second connecting groove 21. More specifically, the connecting parts 3 are connected by pin holes and pins, with the pin holes and pins located on different connecting parts 3 to achieve connection between different connecting parts 3. In actual installation, the pin holes and pins can be slightly misaligned to achieve a tighter connection. Simultaneously, the pins have chamfered guides for easier installation.

[0055] like Figure 8 As shown, the gas turbine also includes a connecting bolt 6; along the axial direction of the gas turbine, a portion of the length of the first cylinder section 1 and a portion of the length of the second cylinder section 2 are connected by the connecting member 3, and a portion of the length of the first cylinder section 1 and a portion of the length of the second cylinder section 2 are connected by the connecting bolt 6.

[0056] like Figure 10As shown, the gas turbine further includes a second seal 7, and the second cylinder section 2 further includes a second sealing groove 25. The second sealing groove 25 is located along the length of the connection between the first cylinder section 1 and the second cylinder section 2 via the connecting bolt 6. The second sealing groove 25 is located at the connection surface between the first cylinder section 1 and the second cylinder section 2, and the second seal 7 is at least partially located within the second sealing groove 25. Specifically, after the first cylinder section and the second cylinder section 2 are connected, the second seal 7 can be compressed to achieve a seal.

[0057] By applying the above-described technical solution of this utility model, at least the following technical effects are achieved:

[0058] 1. In this utility model, the first cylinder section and the second cylinder section are connected by the connecting member, which saves radial space and solves the technical problem that the small radial space causes easy interference between bolts.

[0059] 2. In this utility model, the first cylinder section and the second cylinder section are connected by multiple connecting members, and the multiple connecting members are detachably connected to each other, which facilitates the assembly of the connecting members into the first connecting groove and the second connecting groove.

[0060] The above are merely several specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the protection scope of this utility model.

[0061] 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 the element.

[0062] It should be noted that, in the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A gas turbine connector, the gas turbine comprising a first cylinder section (1), a second cylinder section (2), and a connector (3), wherein the first cylinder section (1) and the second cylinder section (2) are connected to each other at least through the connector (3). Its features are, The first cylinder part (1) includes a first connecting groove (11), and the second cylinder part (2) includes a second connecting groove (21). The first connecting groove (11) and the second connecting groove (21) are both located on the connecting surface of the first cylinder part (1) and the second cylinder part (2). Part of the connecting member (3) is stuck inside the first connecting groove (11), and part of the connecting member (3) is stuck inside the second connecting groove (21).

2. The gas turbine connector according to claim 1, characterized in that, The first connecting groove (11), the second connecting groove (21) and the connecting member (3) all extend along the axial direction of the gas turbine. The connecting member (3) includes a first connecting part (31) and a second connecting part (32). The first connecting part (31) and the second connecting part (32) are directly or indirectly connected. At least a portion of the first connecting part (31) is located inside the first connecting groove (11), and at least a portion of the second connecting part (32) is located inside the second connecting groove (21).

3. The gas turbine connector according to claim 2, characterized in that, The width of the first connecting part (31) is greater than the width of the opening of the first connecting groove (11), and the width of the second connecting part (32) is greater than the width of the opening of the second connecting groove (21).

4. The gas turbine connector according to claim 3, characterized in that, The width of the bottom surface of both the first connecting groove (11) and the second connecting groove (21) is greater than the width of the opening.

5. The gas turbine connector according to claim 4, characterized in that, The connector (3) further includes a third connecting part (33), through which the first connecting part (31) and the second connecting part (32) are connected.

6. The gas turbine connector according to claim 5, characterized in that, The connector (3), the first connecting groove (11) and the second connecting groove (21) all extend to the first end face formed by the first cylinder section (1) and the second cylinder section (2) and are perpendicular to the axial direction of the gas turbine.

7. The gas turbine connector according to claim 6, characterized in that, The gas turbine also includes a fixing member (4) located on the first end face, which restricts the sliding of the connecting member (3) along the direction of the second connecting groove (21).

8. The gas turbine connector according to claim 7, characterized in that, The second cylinder part (2) also includes a fixing hole (22), which is located on the first end face, and the fixing member (4) is fixed to the second cylinder part (2) through the fixing hole (22).

9. The gas turbine connector according to claim 8, characterized in that, The fastener (4) is a bolt, the fixing hole (22) further includes a first mating part (23), the connector (3) further includes a second mating part (36), the first mating part (23) and the second mating part (36) are both grooves, the first mating part (23) and the second mating part (36) are both located on the first end face, a part of the head of the fastener (4) is located in the first mating part (23), and another part of the head of the fastener (4) is located in the second mating part (36).

10. The gas turbine connector according to claim 9, characterized in that, The gas turbine also includes a first seal (5) which extends along the axial direction of the gas turbine and is located between the wall of the second connecting groove (21) and the wall of the third connecting part (33).

11. The gas turbine connector according to claim 10, characterized in that, The second cylinder section (2) further includes a first sealing groove (24), which is located on the wall of the second connecting groove (21). The first sealing groove (24) extends along the axial direction of the gas turbine, and at least part of the first seal (5) is located inside the first sealing groove (24).

12. The gas turbine connector according to claim 11, characterized in that, The gas turbine also includes connecting bolts (6); along the axial direction of the gas turbine, a portion of the first cylinder section (1) and a portion of the second cylinder section (2) are connected by the connecting member (3), and a portion of the first cylinder section (1) and a portion of the second cylinder section (2) are connected by the connecting bolts (6).

13. The gas turbine connector according to claim 12, characterized in that, The gas turbine also includes a second seal (7), and the second cylinder part (2) also includes a second sealing groove (25). The second sealing groove (25) is located on the length segment where the first cylinder part (1) and the second cylinder part (2) are connected by the connecting bolt (6). The second sealing groove (25) is located on the connecting surface of the first cylinder part (1) and the second cylinder part (2). The second seal (7) is at least partially located in the second sealing groove (25).

14. The gas turbine connector according to claim 13, characterized in that, The gas turbine includes multiple connectors (3), which are located at different axial positions of the gas turbine and are detachably connected to each other.

15. The gas turbine connector according to any one of claims 1-14, characterized in that, The first cylinder part (1) is a bearing housing cover, the second cylinder part (2) is the lower half inner ring of the intake cylinder, and the connecting surface between the first cylinder part (1) and the second cylinder part (2) is the mid-section of the intake cylinder.

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