Gas compressor carrier ring device

Abstract

The embodiment of the utility model provides a gas compressor carrier ring device. The gas compressor holding ring device comprises a holding ring body and a blocking piece, the holding ring body is provided with an air exhaust groove, the air exhaust groove penetrates through the wall of the holding ring body in the radial direction of the holding ring body, and the blocking piece is detachably arranged in the air exhaust groove so as to change the cross sectional area, used for air flowing, of the air exhaust groove. According to the gas compressor holding ring device, the air exhaust groove is formed in the holding ring body, so that the positioning and mounting difficulty during mounting of the holding ring body is reduced, and meanwhile, parameters such as the notch size, the position, the inclination angle and the fillet of the air exhaust groove can be conveniently machined. The air exhaust groove is detachably provided with the blocking piece, so that the cross sectional area, used for air flowing, of the air exhaust groove is changed by arranging the blocking piece, the air flow of the air exhaust groove is changed through the blocking piece, and the acting effect of the air compressor is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas turbine field, concretely relates to a compressor holding ring device. BACKGROUND

[0002] The compressor is a component for improving air pressure by using high-speed rotating blades to work on air in the gas turbine, and the holding ring is one of the core components of the compressor and is used for installing stationary blades. In the related art, a gap is provided between adjacent holding rings to form a suction groove for providing cooling gas and anti-surge bleeding gas. However, the provision of the suction groove between the adjacent holding rings makes it difficult to position and install the holding ring, and at the same time, the gas flow through the suction groove cannot be adjusted and controlled, which affects the working effect of the compressor. SUMMARY

[0003] The utility model aims at at least in the related art one of the technical problems in the technical field.

[0004] To this end, an embodiment of the utility model provides a compressor holding ring device.

[0005] The compressor holding ring device of the utility model embodiment comprises a holding ring body and a blocking piece, the holding ring body is provided with a suction groove, the suction groove penetrates the wall of the holding ring body along the radial direction of the holding ring body, and the blocking piece is detachably arranged in the suction groove to change the cross-sectional area of the suction groove for air flow.

[0006] The compressor holding ring device of the utility model embodiment is provided with the suction groove on the holding ring body to reduce the positioning and installation difficulty of the holding ring body during installation, and it is also convenient to process parameters such as notch size, position, inclination angle and round angle of the suction groove. The blocking piece is detachably arranged in the suction groove to change the cross-sectional area of the suction groove for air flow by arranging the blocking piece, so as to change the gas flow of the suction groove through the blocking piece and improve the working effect of the compressor.

[0007] In some embodiments, the holding ring body is provided with stationary blade grooves for installing stationary blades, the stationary blade grooves are arranged at intervals along the axial direction of the holding ring body, and a plurality of the suction grooves are arranged at intervals between adjacent stationary blade grooves and along the circumferential direction of the holding ring body.

[0008] In some embodiments, the suction groove comprises a first section and a second section, the first section and the second section are arranged in sequence along the radial direction of the holding ring body, the first section is farther away from the inner cavity formed by the holding ring body than the second section, the cross-sectional area of the first section is greater than that of the second section, so as to form a groove step surface between the first section and the second section, and the blocking piece is detachably embedded in the first section and abuts against the groove step surface.

[0009] In some embodiments, the blocking member is a cover plate.

[0010] In some embodiments, the cover plate is retractable along a transverse direction of the air slot.

[0011] In some embodiments, the cover plate comprises a plurality of sub-plates arranged in sequence, in adjacent sub-plates, one end of one sub-plate is provided with a first stepped surface, the other end of another sub-plate is provided with a second stepped surface, one end surface of the one sub-plate in the thickness direction is abutted with the second stepped surface, and the other end surface of the another sub-plate in the thickness direction is abutted with the first stepped surface, so that adjacent sub-plates are movable along the arrangement direction of the plurality of sub-plates.

[0012] In some embodiments, the cover plate comprises a plurality of sub-plates, and the plurality of sub-plates are used to arrange at least part of the sub-plates in the air slot.

[0013] In some embodiments, the cover plate is a plurality of cover plates, the plurality of cover plates have different sizes along a transverse direction of the air slot, and the plurality of cover plates are used to select one of the cover plates to be arranged in the air slot.

[0014] In some embodiments, the blocking member is a bushing.

[0015] In some embodiments, the bushing comprises a plurality of sub-bushings, and the plurality of sub-bushings are arranged in sequence and detachably connected.

[0016] In some embodiments, the plurality of sub-bushings have different angles between inner circumferential surfaces of the plurality of sub-bushings and a transverse direction of the air slot, and in adjacent sub-bushings, the inner circumferential surface of the sub-bushing located on the outer side is connected in abutment with the outer circumferential surface of the sub-bushing located on the inner side.

[0017] In some embodiments, the bushing is a plurality of bushings, the plurality of bushings have different angles between inner circumferential surfaces of the plurality of bushings and a transverse direction of the air slot, and / or, the plurality of bushings have different wall thicknesses, and the plurality of bushings are used to select one of the bushings to be arranged in the air slot. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of a first example of a compressor ring holding device according to an embodiment of the present application;

[0019] Figure 2 is Figure 1 is an enlarged schematic diagram of part A in

[0020] Figure 3 is a schematic diagram of a second example of a compressor ring holding device according to an embodiment of the present application;

[0021] Figure 4 isFigure 3 Enlarged view of the middle B part;

[0022] Figure 5 is the first example of the bushing of the compressor ring holding device of the utility model embodiment, and a schematic view is shown;

[0023] Figure 6 is the second example of the bushing of the compressor ring holding device of the utility model embodiment, and a schematic view is shown.

[0024] Reference signs:

[0025] 1, ring holding body; 11, air extraction groove; 111, first section; 112, second section; 113, groove step surface; 12, stationary blade groove;

[0026] 2, blocking piece; 21, sealing plate; 211, sub-plate; 212, first step surface; 213, second step surface; 22, bushing; 221, sub-bushing. DETAILED DESCRIPTION

[0027] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as a limitation of the utility model.

[0028] The following refers to Figures 1-6 The compressor ring holding device according to the utility model embodiment is described below.

[0029] As Figures 1-6 shown, the compressor ring holding device of the utility model embodiment comprises a ring holding body 1 and a blocking piece 2.

[0030] The ring holding body 1 is provided with an air extraction groove 11, and the air extraction groove 11 penetrates the wall of the ring holding body 1 along the radial direction of the ring holding body 1. The blocking piece 2 is detachably arranged in the air extraction groove 11 to change the cross-sectional area of the air extraction groove 11 for air flow.

[0031] When the compressor ring holding device is used, whether to install the blocking piece 2 in the air extraction groove 11 can be selected according to the cooling air demand of the turbine end, so as to adjust the flow of the cooling air through the air extraction groove 11 by the blocking piece 2.

[0032] The compressor ring holding device of the utility model embodiment is arranged with an air extraction groove on the ring holding body to reduce the positioning and installation difficulty of the ring holding body during installation, and also facilitates the processing of parameters such as the size, position, inclination angle and round angle of the air extraction groove. The air extraction groove is detachably provided with a blocking piece to change the cross-sectional area of the air extraction groove for air flow by arranging the blocking piece, so as to change the air flow of the air extraction groove by the blocking piece and improve the work effect of the compressor.

[0033] In some embodiments, the shroud body 1 is provided with a plurality of stationary blade slots 12 for mounting stationary blades, the plurality of stationary blade slots 12 are arranged along the axial direction of the shroud body 1, and a plurality of suction slots 11 are arranged between adjacent stationary blade slots 12, and the plurality of suction slots 11 are arranged along the circumferential direction of the shroud body 1.

[0034] As shown in Figure 1 and Figure 3 , the shroud body 1 is annular, and the inner circumferential surface of the shroud body 1 is provided with a plurality of stationary blade slots 12, and the plurality of stationary blade slots 12 are arranged along the axial direction of the shroud body 1, and the stationary blade slots 12 are used for mounting stationary blades.

[0035] A plurality of suction slots 11 are arranged between adjacent two stationary blade slots 12, and preferably but not limited to a plurality of suction slots 11, and the plurality of suction slots 11 are arranged along the circumferential direction of the shroud body 1, thereby providing uniform cooling gas and ensuring cooling effect.

[0036] It can be understood that, in use of the compressor shroud device, the plurality of suction slots 11 can be provided with the blocking piece 2, or can not be provided with the blocking piece 2, or a part of the plurality of suction slots 11 can be provided with the blocking piece 2, and the other part of the plurality of suction slots 11 can not be provided with the blocking piece 2.

[0037] In some embodiments, the suction slot 11 includes a first section 111 and a second section 112, the first section 111 and the second section 112 are arranged in sequence along the radial direction of the shroud body 1, and the first section 111 is farther away from the inner cavity formed by the shroud body 1 than the second section 112, the cross-sectional area of the first section 111 is greater than that of the second section 112, so that a slot stepped surface 113 is formed between the first section 111 and the second section 112, and the blocking piece 2 is detachably embedded in the first section 111 and abuts against the slot stepped surface 113.

[0038] As shown in Figure 2 and Figure 4 , the suction slot 11 includes a first section 111 and a second section 112 which are communicated along the radial direction of the shroud body 1, the first section 111 is located at the outer end of the shroud body 1 and forms a first opening on the outer circumferential surface of the shroud body 1, and the second section 112 is located at the inner end of the shroud body 1 and forms a second opening on the inner circumferential surface of the shroud body 1.

[0039] The suction groove 11 preferably, but not limited to, extends along the circumference of the holder ring body 1, so the length direction of the suction groove 11 is the circumferential direction of the holder ring body 1, and the width direction of the suction groove 11 is the circumferential axial direction of the holder ring body 1. The length of the first section 111 is greater than the length of the second section 112, and the width of the first section 111 is greater than the width of the second section 112, so that the cross-sectional area of the first section 111 is greater than the cross-sectional area of the second section 112, and a groove step surface 113 is formed between the first section 111 and the second section 112. It can be understood that the step surface 113 can be a plane or an arc surface extending around the axis of the holder ring body 1, and is preferably a plane.

[0040] The blocking piece 2 is detachably embedded in the first section 111, preferably but not limited to, the two end faces of the blocking piece 2 in the width direction of the suction groove 11 abut the inner wall surface of the first section 111, so that the blocking piece 2 is clamped in the first section 111. The step surface 113 abuts the blocking piece 2 to prevent the blocking piece 2 from coming off the suction groove 11 and entering the holder ring body 1, so the blocking piece 2 is disassembled through the first opening.

[0041] It can be understood that the length and width of the first section 111 are not limited to being greater than the second section 112, and in other embodiments, one of the length and width of the first section 111 is greater than the second section 112.

[0042] In the examples shown in Figure 1 and Figure 2 , the blocking piece 2 is a sealing plate 21.

[0043] The sealing plate 21 blocks all or part of the suction groove 11 in the transverse direction of the suction groove 11, and the cooling gas is all blocked by the sealing plate 21 or passes through the remaining part of the suction groove 11, so that the flow of cooling gas is adjusted by the sealing plate 21.

[0044] Specifically, the sealing plate 21 is arranged in the first section 111, and the two end faces of the sealing plate 21 in the width direction of the suction groove 11 abut the inner wall surface of the first section 111, so that the sealing plate 21 is clamped in the first section 111. The length of the sealing plate 21 is less than or equal to the length of the suction groove 11, so that the sealing plate 21 blocks all or part of the suction groove 11 in the length direction of the suction groove 11.

[0045] In the examples shown in Figure 1 and Figure 2 , the sealing plate 21 can be telescopic in the transverse direction of the suction groove 11. Preferably, but not limited to, it can be telescopic in the length direction of the suction groove 11. The area of the suction groove 11 blocked by the sealing plate 21 is adjusted by the telescopic amount of the sealing plate 21, so that the flow of cooling gas is further adjusted by the telescoping of the sealing plate 21.

[0046] In the examples shown in Figure 1 and Figure 2In the example shown, the sealing plate 21 includes a plurality of sub-plates 211 arranged in sequence. In adjacent sub-plates 211, one end of one sub-plate 211 is provided with a first stepped surface 212, and the other end of another sub-plate 211 is provided with a second stepped surface 213. One end face of one sub-plate 211 along the thickness direction abuts against the second stepped surface 213, and the other end face of another sub-plate 211 along the thickness direction abuts against the first stepped surface 212, so that adjacent sub-plates 211 can be moved along the sequential arrangement direction of the plurality of sub-plates 211.

[0047] Specifically, such as Figure 2 As shown, multiple sub-plates 211 are connected sequentially in the left-right direction. In adjacent sub-plates 211, the upper right end of the left sub-plate 211 has a first groove, forming a first stepped surface 212 extending in the left-right direction at its right end. The lower left end of the right sub-plate 211 has a second groove, forming a second stepped surface 213 extending in the left-right direction at its left end. The top end of the left sub-plate 211 is positioned opposite the second groove, so that the top surface of the left sub-plate 211 abuts against the second stepped surface 213, and the top end of the left sub-plate 211 is movable in the left-right direction within the second groove. The bottom end of the right sub-plate 211 is positioned opposite the first groove, so that the bottom surface of the right sub-plate 211 abuts against the first stepped surface 212, and the bottom end of the right sub-plate 211 is movable in the left-right direction within the first groove. This allows adjacent sub-plates 211 to extend and retract in the left-right direction.

[0048] Among the multiple sub-plates 211, the leftmost sub-plate 211 has a flat left end face to abut against the left end face of the first segment 111, and the rightmost sub-plate 211 has a flat right end face to abut against the right end face of the first segment 111. The remaining sub-plates 211 are provided with a second groove at the lower left end and a first groove at the upper right end, so that each adjacent sub-plate 211 can be extended and retracted in the left and right direction. This allows the sealing plate 21 to block the entire air extraction groove 11 when it is extended to its maximum length, and the area blocked by the air extraction groove 11 can be adjusted by extending and retracting the sealing plate 21, thereby adjusting the flow rate of cooling air in the air extraction groove 11.

[0049] Each sub-plate 211 has its end face in the front-to-back direction abutting against the inner wall of the first segment 111, so that each sub-plate 211 is locked inside the first segment 111.

[0050] It can be understood that in other embodiments, in the two adjacent sub-plates 211, the right upper end of the left sub-plate 211 is provided with a first groove, so that the right end of the left sub-plate 211 forms a first stepped surface 212 extending in the left-right direction, and the left lower end of the right sub-plate 211 is provided with a second groove, so that the left end of the right sub-plate 211 forms a second stepped surface 213 extending in the left-right direction. The right lower end of the left sub-plate 211 is located in the second groove and is movable in the left-right direction, and the left upper end of the right sub-plate 211 is located in the first groove and is movable in the left-right direction, so that the adjacent sub-plates 211 are telescopic in the left-right direction.

[0051] It can be understood that the cover plate 21 is not limited to being telescopic.

[0052] In other embodiments, the cover plate 21 is multiple, and the multiple cover plates 21 have different sizes in the transverse direction of the air exhaust groove 11, preferably but not limited to different sizes in the length direction of the air exhaust groove 11, in other words, the multiple cover plates 21 are arranged in order of increasing length. The multiple cover plates 21 are used to select one of the cover plates 21 to be arranged in the air exhaust groove 11. By selecting cover plates 21 of different sizes to be installed in the air exhaust groove 11 to adjust the area of the air exhaust groove 11 blocked by the cover plate 21, the flow of cooling gas is further adjusted.

[0053] In other embodiments, the cover plate 21 includes multiple sub-plates 211, and the multiple sub-plates 211 are used to arrange at least part of the sub-plates 211 in the air exhaust groove 11.

[0054] As shown in Figure 2 The multiple sub-plates 211 are used to arrange at least part of the sub-plates 211 in the first section 111 and arrange them in order along the length direction of the first section 111. The more sub-plates 211 arranged in the air exhaust groove 11, the larger the area of the air exhaust groove 11 blocked. When all the multiple sub-plates 211 are arranged in the first section 111, the air exhaust groove 11 is preferably but not limited to completely blocked. By adjusting the number of sub-plates 211 arranged in the first section 111 to adjust the area of the air exhaust groove 11 blocked, the flow of cooling gas in the air exhaust groove 11 is adjusted.

[0055] Preferably, adjacent sub-plates 211 are connected by groove and boss clamping.

[0056] It can be understood that when multiple sub-plates 211 are arranged in the air exhaust groove 11 and the air exhaust groove 11 is not completely blocked, the multiple sub-plates 211 in the air exhaust groove 11 can be connected in order in the left-right direction, or can be arranged as at least two parts spaced apart in the left-right direction, each part including a plurality of connected sub-plates 211, for example, arranged as two parts, one part located at the left end of the first section 111 and the other part located at the right end of the first section 111, and the two parts have a spacing for cooling gas to pass through.

[0057] In the case ofFigure 3 and Figure 4 In the example shown, the blocking element 2 is a bushing 22. The bushing 22 blocks a portion of the suction groove 11 along its transverse direction, and the cooling air passes through the remaining portion of the suction groove 11, thereby regulating the flow rate of the cooling air through the bushing 22.

[0058] Specifically, the bushing 22 is disposed within the first section 111 to block a portion of the suction groove 11 in the transverse direction, and the inner cavity of the bushing 22 coincides with the first section 111 to allow cooling air to pass through.

[0059] The bushing 22 is an annular ring extending circumferentially along the suction groove 11. Both end faces of the bushing 22 along the width direction and / or both end faces along the length direction of the suction groove 11 abut against the inner wall surface of the first segment 111. Preferably, both the two end faces in the width direction and both end faces in the length direction abut against the inner wall surface of the first segment 111. In other words, the outer circumferential surface of the bushing 22 abuts against the inner circumferential surface of the first segment 111. This allows the bushing 22 to be secured within the first segment 111.

[0060] In such Figure 6 In the example shown, the bushing 22 includes multiple sub-sleeves 221, which are sequentially fitted and detachably connected. The area of ​​the bushing 22 blocking the suction groove 11 is adjusted by the number of sub-sleeves 221 installed within the first section 111, thereby further regulating the flow rate of the cooling air. It should be noted that the multiple sub-sleeves 221 are installed sequentially from the outside to the inside to ensure the stability of the sub-sleeve installation.

[0061] It is understood that bushing 22 is not limited to being configured to include multiple sub-bushings 221, as in... Figure 5 In the example shown, there are multiple bushings 22, and the included angle between the inner circumferential surface of the multiple bushings 22 and the transverse direction of the suction groove 11 is different, and / or the wall thickness of the multiple bushings 22 is different. The multiple bushings 22 are used to select one of the bushings 22 to be disposed in the suction groove 11.

[0062] Specifically, such as Figure 5 As shown, bushing 22 is configured in three parts, such as... Figure 5 (a) shows the first bushing 22, as shown Figure 5 (b) shows the second bushing 22, as shown Figure 5 (c) shows the third bushing 22. The wall thickness of the three bushings 22 decreases sequentially so that the three bushings 22 have different blocking areas. By selecting bushings 22 with different wall thicknesses to install in the suction groove 11, the area of ​​the bushing 22 blocking the suction groove 11 can be adjusted, thereby further regulating the flow rate of the cooling gas.

[0063] It should be noted that, as Figure 5As shown, the outer peripheral surface of each bushing 22 is a vertical surface to abut against the inner peripheral surface of the first segment 111. The inner peripheral surface of each bushing 22 can be a vertical surface or an inclined surface. When the inner peripheral surface of the bushing 22 is an inclined surface, the wall thickness of the bushing 22 is the maximum wall thickness of the bushing 22, i.e., as shown... Figure 5 The thickness of the bottom end of the wall of the bushing 22 shown.

[0064] It is understandable that when multiple bushings 22 have the same height, different inclination angles of the inner circumferential surface of the bushing 22 will result in different wall thicknesses of the bushing 22.

[0065] Furthermore, the included angle between the inner circumferential surface of the plurality of bushings 22 and the transverse direction of the suction groove 11 is different; in other words, the inclination angle of the inner circumferential surface of the plurality of bushings 22 is different.

[0066] Specifically, such as Figure 5 As shown, the inner circumferential surfaces of the three bushings 22 are all inclined surfaces. The angle between the inner circumferential surface of the first bushing 22 and the transverse direction of the suction groove 11 is α1, the angle between the inner circumferential surface of the second bushing 22 and the transverse direction of the suction groove 11 is α2, and the angle between the inner circumferential surface of the third bushing 22 and the transverse direction of the suction groove 11 is α3, where α1 < α2 < α3, so that the inclination angles of the inner circumferential surfaces of the three bushings 22 are different. By selecting bushings 22 with different inclination angles of their inner circumferential surfaces to install in the suction groove 11, the state of the cooling air after passing through the suction groove 11, such as the degree of diffusion and flow rate, can be adjusted.

[0067] In such Figure 6 In the example shown, the included angle between the inner circumferential surface of the multiple sub-sleeves 221 and the transverse direction of the air extraction groove 11 is different. Among the adjacent sub-sleeves 221, the inner circumferential surface of the outer sub-sleeve 221 is connected to the outer circumferential surface of the inner sub-sleeve 221.

[0068] Specifically, such as Figure 6As shown, the sub-sleeve 221 is preferably but not limited to three, from outside to inside, the outermost sub-sleeve 221 is preferably the outer peripheral surface is a vertical surface, for abutting the inner peripheral surface of the first section 111, thereby being clamped in the first section 111. The inner peripheral surface of the outermost sub-sleeve 221 and the outer peripheral surface of the middle sub-sleeve 221 are both at an angle of β1 with the transverse direction of the air extraction groove 11, for abutting each other, thereby clamping and fixing the middle sub-sleeve 221. The inner peripheral surface of the middle sub-sleeve 221 and the outer peripheral surface of the innermost sub-sleeve 221 are both at an angle of β2 with the transverse direction of the air extraction groove 11, for abutting each other, thereby clamping and fixing the innermost sub-sleeve 221. The inner peripheral surface of the innermost sub-sleeve 221 is at an angle of β3 with the transverse direction of the air extraction groove 11. β1 < β2 < β3, so that the inclination angles of the inner peripheral surfaces of the three sub-sleeves 221 are different. By installing different numbers of sub-sleeves 221, the state such as diffusion degree and flow rate of the cooling gas after passing through the air extraction groove 11 is adjusted.

[0069] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0070] In addition, the terms "first" and "second" are only used for differentiation and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0071] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected or in communication with each other; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication or interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0072] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0073] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0074] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A compressor ring holding device characterized by, The application relates to a holding ring body (1) and a blocking piece (2), the holding ring body (1) is provided with an air extraction groove (11) penetrating through the wall of the holding ring body (1) along the radial direction of the holding ring body (1), and the blocking piece (2) is detachably arranged in the air extraction groove (11) to change the cross-sectional area of the air extraction groove (11) for air flow. The holding ring body (1) is provided with a plurality of stator blade grooves (12) arranged at intervals along the axial direction of the holding ring body (1) for mounting stator blades, and a plurality of air extraction grooves (11) are arranged at intervals along the circumferential direction of the holding ring body (1) between adjacent stator blade grooves (12).

2. The compressor ring carrier apparatus of claim 1, wherein, The air extraction groove (11) comprises a first section (111) and a second section (112), the first section (111) and the second section (112) are arranged in sequence along the radial direction of the holding ring body (1), the first section (111) is farther away from the inner cavity formed by the holding ring body (1) than the second section (112), the cross-sectional area of the first section (111) is larger than that of the second section (112), so that a groove step surface (113) is formed between the first section (111) and the second section (112), and the blocking piece (2) is detachably embedded in the first section (111) and abuts against the groove step surface (113).

3. The compressor ring carrier apparatus of claim 1, wherein, The blocking piece (2) is a sealing plate (21).

4. The compressor ring carrier apparatus of claim 1, wherein, The sealing plate (21) can be stretched and contracted along the transverse direction of the air extraction groove (11).

5. The compressor ring carrier apparatus of claim 4, wherein, The sealing plate (21) comprises a plurality of sub-plates (211) arranged in sequence, one end of one of the sub-plates (211) is provided with a first step surface (212), the other end of another of the sub-plates (211) is provided with a second step surface (213), one end face of the one of the sub-plates (211) in the thickness direction abuts against the second step surface (213), and the other end face of the other of the sub-plates (211) in the thickness direction abuts against the first step surface (212), so that the adjacent sub-plates (211) can be moved along the arrangement direction of the plurality of sub-plates (211).

6. The compressor ring carrier apparatus of claim 5, wherein, The sealing plate (21) comprises a plurality of sub-plates (211), and the plurality of sub-plates (211) are used for arranging at least part of the sub-plates (211) in the air extraction groove (11).

7. The compressor ring carrier apparatus of claim 4, wherein, The sealing plate (21) is a plurality of sealing plates (21), the plurality of sealing plates (21) have different sizes along the transverse direction of the air extraction groove (11), and the plurality of sealing plates (21) are used for selecting one of the sealing plates (21) to be arranged in the air extraction groove (11).

8. The compressor ring carrier apparatus of claim 4, wherein, The blocking piece (2) is a bushing (22).

9. The compressor ring carrier apparatus of claim 1, wherein, The bushing (22) comprises a plurality of sub-bushings (221), and the plurality of sub-bushings (221) are sequentially sleeved and detachably connected.

10. The compressor ring carrier apparatus of claim 9, wherein, ​ 11. The compressor ring carrier apparatus of claim 10, wherein, The angle between the inner circumferential surface of the plurality of sub-sleeves (221) and the transverse direction of the air extraction groove (11) has a difference, and in adjacent sub-sleeves (221), the inner circumferential surface of the outer sub-sleeve (221) is connected in abutment with the outer circumferential surface of the inner sub-sleeve (221).

12. The compressor ring carrier apparatus of claim 9, wherein, The plurality of bushings (22) have a difference in the angle between the inner circumferential surface of the plurality of bushings (22) and the transverse direction of the air extraction groove (11), and / or a difference in the wall thickness of the plurality of bushings (22), and the plurality of bushings (22) are used to select one of the bushings (22) to be arranged in the air extraction groove (11).

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