Stationary blade sealing ring and gas turbine

Abstract

The stationary blade sealing ring comprises a ring body and adjusting units, the ring body is provided with a plurality of air supply holes, the air supply holes are formed in the circumferential direction of the ring body at intervals, each air supply hole communicates with the inner circumferential wall and the outer circumferential wall of the ring body, and the adjusting units are arranged at at least part of the air supply holes. The adjusting unit comprises a movable part and a driving part, the movable part is assembled on the ring body in a sliding mode and has a first position and a second position, at the first position, the movable part blocks at least part of the air supply holes, at the second position, the movable part relieves blocking of the air supply holes, and the driving part is arranged on the ring body. And the driving piece is used for driving the movable piece to move between the first position and the second position. The stationary blade sealing ring is provided with the adjusting unit, the adjusting unit can adjust the size of the through-flow section of the air supply hole, then the amount of cooling air flow supplied through the air supply hole can be adjusted and controlled, and supply of cooling air can meet the use requirements of different operation working conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of gas turbines, and in particular, to a stator vane sealing ring and a gas turbine. Background Art

[0002] In order to avoid the situation that excessive temperature leads to a decrease in material strength and affects the safe operation of the gas turbine, during the operation of the gas turbine, it is necessary to cool positions such as the turbine disk cavity and the annular space between two disks by supplying cold air. However, in the prior art, the amount of cold air supplied for cooling the disks cannot be adjusted according to actual needs, and the cooling method using cold air cannot meet the usage requirements under different operating conditions, reducing the flexibility of use. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to some extent.

[0004] To this end, an embodiment of the present invention provides a stator vane sealing ring, which is provided with an adjusting unit. The adjusting unit can adjust the flow cross-sectional area of the air supply holes, and further can control the amount of cooling air flow supplied through the air supply holes, so that the supply of the cooling gas can meet the usage requirements under different operating conditions, improving the flexibility of use.

[0005] An embodiment of the present invention further provides a gas turbine including the above-mentioned stator vane sealing ring.

[0006] The stator vane sealing ring of the embodiment of the present invention includes:

[0007] A ring body, the ring body is provided with a plurality of air supply holes, the plurality of air supply holes are arranged at intervals along the circumferential direction of the ring body, and each air supply hole communicates with the inner circumferential wall and the outer circumferential wall of the ring body;

[0008] An adjusting unit, the adjusting unit is provided at least at some of the air supply holes. The adjusting unit includes a movable member and a driving member. The movable member is slidably assembled on the ring body and has a first position and a second position. In the first position, the movable member blocks at least part of the air supply holes. In the second position, the movable member releases the blockage of the air supply holes. The driving member is arranged on the ring body, and the driving member is used to drive the movable member to move between the first position and the second position to adjust the flow rate of the cooling gas flowing through the air supply holes.

[0009] In some embodiments, the driving member has a first state and a second state. In the first state, the driving member applies a first acting force to the movable member to drive the movable member to move towards the first position. In the second state, the driving member applies a second acting force to the movable member to drive the movable member to move towards the second position. The directions of the first acting force and the second acting force are opposite.

[0010] In some embodiments, the movable member is magnetically conductive, the driving member is electromagnetic, and one of the first acting force and the second acting force is a magnetic attraction force and the other is a magnetic repulsion force.

[0011] In the first state, a first current is passed through the driving member so that the driving member generates the first acting force applied to the movable member. In the second state, a second current is passed through the driving member so that the driving member generates the second acting force applied to the movable member. The directions of the first current and the second current are opposite.

[0012] In some embodiments, the driving member includes a bracket and an electromagnet. The bracket is fixed to the ring body, and the electromagnet is mounted on the bracket.

[0013] In some embodiments, the bracket is provided with a protruding portion. The movable member includes a first section and a second section. In the radial direction along the ring body, the thickness dimension of the first section is greater than that of the second section. The first section is arranged closer to the driving member than the second section, and the protruding portion is arranged towards the first section.

[0014] In some embodiments, the adjusting unit is arranged on the outer peripheral wall of the ring body. The movable member and the driving member of the adjusting unit are arranged opposite to each other in the circumferential direction of the ring body, and the movable member is slidable along the circumferential direction of the ring body.

[0015] In some embodiments, two adjusting units are provided at the air supply hole. The two adjusting units are arranged opposite to each other. The movable members of the two adjusting units are arranged between the driving members of the two adjusting units, and the driving members of the two adjusting units are respectively used to drive the two movable members to move so as to jointly adjust the flow rate of the cooling gas in the air supply hole through the movement of the two movable members.

[0016] In some embodiments, the movable member is provided with a groove. The groove of each movable member is arranged on one side of the two movable members facing each other. In the first position, the grooves of the two movable members are combined into a ventilation hole. The ventilation hole is communicated with the air supply hole, and the aperture of the ventilation hole is smaller than that of the air supply hole.

[0017] In some embodiments, the ring body includes:

[0018] An annular portion, with a plurality of the air supply holes provided in the annular portion and arranged at intervals along the circumferential direction of the annular portion;

[0019] Two annular edges, both of which are provided on the outer peripheral side of the annular portion and extend and close into a circle along the circumferential direction of the annular portion, and the two annular edges are opposite and spaced apart in the axial direction of the annular portion, and the adjusting unit is provided between the two annular edges.

[0020] The gas turbine according to an embodiment of the present invention includes the stator blade sealing ring as described in any one of the above embodiments.

[0021] Advantageous effects: The stator blade sealing ring and the gas turbine according to the embodiments of the present invention. The stator blade sealing ring is provided with an adjusting unit, and the adjusting unit can adjust the size of the flow cross-section of the air supply hole, and further can control the amount of the cooling air flow supplied through the air supply hole, so that the supply of the cooling gas can meet the usage requirements of different operating conditions, and the flexibility of use is improved. Description of the Drawings

[0022] Figure 1 is a schematic cross-sectional view perpendicular to the axial direction of the stator blade sealing ring according to an embodiment of the present invention.

[0023] Figure 2 is Figure 1 the layout schematic diagram of the adjusting unit at a single air supply hole in

[0024] Figure 3 is a three-dimensional schematic diagram of the stator blade sealing ring according to an embodiment of the present invention.

[0025] Figure 4 is the layout schematic diagram of the grooves with different specifications on two movable parts according to an embodiment of the present invention.

[0026] Figure 5 is a schematic cross-sectional view of a partial structure of the gas turbine according to an embodiment of the present invention.

[0027] Figure 6 is a three-dimensional schematic diagram of the assembly of the stator blade and the stator blade sealing ring of the gas turbine according to an embodiment of the present invention.

[0028] Reference Signs:

[0029] 100 - Stator Blade Sealing Ring;

[0030] 1 - Ring Body; 11 - Air Supply Hole; 12 - Inner Peripheral Wall; 13 - Outer Peripheral Wall; 14 - Annular Portion; 15 - Annular Edge;

[0031] 2 - Adjusting unit; 21 - Movable part; 211 - First section; 212 - Second section; 22 - Driving part; 221 - Protruding part; 213 - Groove;

[0032] 200 - Stationary blade; 300 - Rotating blade; 400 - Front wheel disc; 401 - First ring part; 500 - Rear wheel disc; 501 - Second ring part; 600 - Annular cavity; 700 - Transparent stator. Specific embodiments

[0033] The embodiments of the present invention will be described in detail below. The 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 present invention, and should not be construed as a limitation to the present invention.

[0034] As Figure 1 shown, the stationary blade sealing ring 100 of the embodiment of the present invention includes a ring body 1 and an adjusting unit 2.

[0035] The ring body 1 is provided with a plurality of air supply holes 11. The plurality of air supply holes 11 are arranged at intervals along the circumferential direction of the ring body 1, and each air supply hole 11 communicates with the inner peripheral wall 12 and the outer peripheral wall 13 of the ring body 1. For example, as Figure 1 shown, the ring body 1 can be circular. The ring body can be provided with a plurality of air supply holes 11. The plurality of air supply holes 11 can be arranged at equal intervals along the circumferential direction of the ring body 1. The ring body 1 has an inner peripheral wall 12 and an outer peripheral wall 13 arranged oppositely in the radial direction, wherein the outer peripheral wall 13 surrounds the outer peripheral side of the inner peripheral wall 12.

[0036] Each air supply hole 11 can communicate with the inner peripheral wall 12 and the outer peripheral wall 13 of the ring body 1. Thus, the use requirement of delivering the cooling air flow outside the ring body 1 into the ring body 1 is satisfied.

[0037] The adjusting unit 2 is provided at at least a part of the air supply holes 11. For example, as Figure 1 shown, the air supply holes 11 can be provided with an even number. A part of the air supply holes 11 can be first holes, and another part of the air supply holes 11 can be second holes. The plurality of first holes and the plurality of second holes can be arranged at equal intervals along the circumferential direction of the ring body 1. The above-mentioned adjusting unit 2 can be arranged only at each first hole. Specifically, as Figure 3 shown, in some other embodiments, the adjusting unit 2 can be arranged at each first hole and each second hole.

[0038] The adjusting unit 2 includes a movable part 21. The movable part 21 is slidably assembled on the ring body 1 and has a first position and a second position. In the first position, the movable part 21 blocks at least a part of the air supply holes 11. In the second position, the movable part 21 releases the blockage of the air supply holes 11.

[0039] For example, as Figure 2As shown, the movable member 21 can be a slider structure. The movable member 21 can be slidably assembled on the ring body 1 and can reciprocate along the circumferential direction of the ring body 1. In some other embodiments, the movable member 21 can also be slidably assembled along the axial direction of the ring body 1 or other directions. During the movement of the movable member 21, the movable member 21 has two limit positions, namely the first position and the second position respectively.

[0040] When the movable member 21 moves to the first position, the movable member 21 can completely block the air supply hole 11. In some other embodiments, the movable member 21 can also partially block the air supply hole 11. Thereby, the flow rate of the cooling gas flowing through the air supply hole 11 can be reduced.

[0041] When the movable member 21 moves to the second position, the movable member 21 can completely release the blockage of the air supply hole 11. At this time, the flow area of the air supply hole 11 is the largest, and the flow rate of the cooling air flow supplied through the air supply hole 11 is also the largest, meeting the use requirements for the supply of a large amount of cooling air flow.

[0042] It should be noted that the ring body 1 can be provided with structures such as tracks specifically for assembling the movable member 21. A part of the movable member 21 can be a slider, and the slider can be slidably assembled in the corresponding track, thereby improving the stability and guiding property of the slidable assembly of the movable member 21 and also avoiding the situation where the movable member 21 disengages from the ring body 1 during use.

[0043] The adjusting unit 2 further includes a driving member 22. The driving member 22 is arranged on the ring body 1, and the driving member 22 is used to drive the movable member 21 to move between the first position and the second position so as to adjust the flow rate of the cooling gas flowing through the air supply hole 11.

[0044] For example, as Figure 2 shown, the driving member 22 can be a linear drive or the like. The driving member 22 can be connected to the movable member 21 and can push or pull the movable member 21. In some other embodiments, the driving member 22 can also drive the movable member 21 in a non-contact manner. During use, the driving member 22 can be used to drive the movable member 21 to reciprocate between the above-mentioned first position and the second position. During the movement, the flow rate of the cooling gas supplied through the corresponding air supply hole 11 can be adjusted, thereby realizing the autonomous and controllable adjustment of the total amount of the supplied cooling gas.

[0045] In the stator blade sealing ring 100 of the embodiment of the present invention, an adjusting unit 2 is provided at the air supply hole 11 of the stator blade sealing ring 100. The adjusting unit 2 can adjust the size of the flow cross-section of the air supply hole 11, and further can control the amount of the cooling air flow supplied through the air supply hole 11, so that the supply of the cooling gas can meet the use requirements of different operating conditions, improving the flexibility of use.

[0046] In some embodiments, the driving member 22 has a first state and a second state. In the first state, the driving member 22 applies a first acting force to the movable member 21 to drive the movable member 21 to move to a first position. In the second state, the driving member 22 applies a second acting force to the movable member 21 to drive the movable member 21 to move to a second position, and the directions of the first acting force and the second acting force are opposite.

[0047] For example, the self-state or structural feature of the driving member 22 can be in a form that can be variably adjusted. For example, when corresponding conditions are met, the shape of the driving member 22 can change and have a first state and a second state, and the first state and the second state can be the states when the driving member 22 is in different shapes.

[0048] When the driving member 22 switches to the first state, the driving member 22 can directly push against the movable member 21. That is, the first acting force applied by the driving member 22 to the movable member 21 at this time can be a pushing acting force. Under the action of the first acting force, the movable member 21 can move to the first position, thereby blocking the air supply hole 11 and reducing the overall supply amount of the cooling gas.

[0049] When the driving member 22 switches to the second state, the driving member 22 can pull the movable member 21. That is, the second acting force applied by the driving member 22 to the movable member 21 at this time can be a pulling acting force. Under the action of the second acting force, the movable member 21 can move to the second position, thereby gradually releasing the blockage of the air supply hole 11 and increasing the overall supply amount of the cooling gas.

[0050] In some embodiments, the movable member 21 is magnetically conductive, the driving member 22 is electromagnetic, and one of the first acting force and the second acting force is a magnetic attraction force and the other is a magnetic repulsion force.

[0051] For example, as Figure 2 shown, taking a single adjustment unit 2 on the left side of the air supply hole 11 as an example, the movable member 21 of the adjustment unit 2 can be a structural member with magnetic conductivity such as an iron block or a magnet, and the driving member 22 can include an electromagnet, and the driving member 22 can be directly fixed on the ring body 1. The above first acting force can be a magnetic repulsion force, the above second acting force can be a magnetic attraction force, and the generation of the first acting force and the second acting force can be achieved by passing different currents into the driving member 22.

[0052] In the first state, a first current is passed into the driving member 22 to cause the driving member 22 to generate a first acting force applied to the movable member 21. In the second state, a second current is passed into the driving member 22 to cause the driving member 22 to generate a second acting force applied to the movable member 21, and the directions of the first current and the second current are opposite.

[0053] For example, asFigure 2 As shown, taking a single adjusting unit 2 on the left side of the air supply hole 11 as an example, when it is necessary to reduce the supply amount of the overall cooling gas, a first current can be introduced into the driving member 22. The first current can be a forward current. At this time, a magnetic repulsive force can be generated between the driving member 22 and the movable member 21. Under the action of the magnetic repulsive force, the movable member 21 can move to the right and can block part or all of the inlet of the air supply hole 11.

[0054] When it is necessary to increase the supply amount of the overall cooling gas, a second current flowing in the opposite direction to the first current can be introduced into the driving member 22, that is, the second current can be a reverse current. At this time, a magnetic attractive force can be generated between the driving member 22 and the movable member 21. Under the action of the magnetic attractive force, the movable member 21 can move to the left and can gradually release the blockage of the inlet of the air supply hole 11.

[0055] The magnetic attraction design of the driving member 22 and the movable member 21 can simplify the overall structural arrangement, avoiding the problem that a mechanical structure requires complex structural design. Secondly, it also simplifies the overall operation, that is, the above-mentioned switching between magnetic repulsive force and magnetic attractive force can be realized by introducing currents in different directions.

[0056] In some embodiments, the driving member 22 includes a bracket and an electromagnet. The bracket is fixed to the ring body 1, and the electromagnet is installed on the bracket. For example, the bracket can be directly fixed on the outer peripheral side of the ring body 1, and the electromagnet can be embedded in the bracket. Thus, the installation and arrangement of the driving member 22 are facilitated, avoiding the situation of additionally setting an installation structure on the ring body 1 and ensuring the adaptability to different ring bodies 1.

[0057] In some embodiments, the bracket is provided with a protruding portion 221. The movable member 21 includes a first section 211 and a second section 212. In the radial direction of the ring body 1, the thickness dimension of the first section 211 is greater than that of the second section 212. The first section 211 is arranged closer to the driving member 22 than the second section 212, and the protruding portion 221 is arranged facing the first section 211.

[0058] For example, as Figure 2 shown, taking the adjusting unit 2 on the left side of the air supply hole 11 as an example, the right side of the bracket of the adjusting unit 2 can be provided with a protruding portion 221. The protruding portion 221 can be a protrusion protruding from the right surface of the bracket, etc. The movable member 21 can be divided into two sections according to different sizes. The two sections form an L-shaped structure, and the two sections are respectively the first section 211 and the second section 212. Among them, the thickness dimension of the first section 211 in the radial direction is greater than that of the second section 212 in the radial direction, so as to enhance the magnetic effect with the electromagnet. During use, the protruding portion 221 can be directly in abutting contact with the first section 211, so that the protruding protruding portion 221 can play a role in limiting the movable member 21.

[0059] In some other embodiments, the protruding portion 221 may also be made of a material different from that of the bracket. For example, the protruding portion 221 may have a certain elasticity, etc. The elastic action of the protruding portion 221 can buffer the impact of the moving member 21 on the bracket.

[0060] In some embodiments, as Figure 2 shown, the adjusting unit 2 is provided on the outer peripheral wall 13 of the ring body 1. The moving member 21 and the driving member 22 of the adjusting unit 2 are arranged opposite to each other in the circumferential direction of the ring body 1, and the moving member 21 is slidable along the circumferential direction of the ring body 1. Thus, the disk cavity space enclosed by the stator blades 200 and the stator blade seal ring 100 can be fully utilized. On the one hand, it can play a protective role and hide the adjusting unit 2, and on the other hand, it can also improve the overall space utilization rate.

[0061] In some other embodiments, the moving member 21 may also be assembled inside the ring body 1. For example, the moving member 21 may be located on the hole wall in the middle of the air supply hole 11, and the moving member 21 can extend into the air supply hole 11 and can move out of the air supply hole 11. In some other embodiments, the adjusting unit 2 may also be installed on the inner peripheral wall 12 of the ring body 1.

[0062] In some embodiments, two adjusting units 2 are provided in the air supply hole 11. The two adjusting units 2 are arranged opposite to each other. The moving members 21 of the two adjusting units 2 are arranged between the driving members 22 of the two adjusting units 2, and the driving members 22 of the two adjusting units 2 are respectively used to drive the two moving members 21 to move so as to jointly adjust the flow rate of the cooling gas in the air supply hole 11 through the movement of the two moving members 21.

[0063] For example, as Figure 2 shown, two adjusting units 2 may be correspondingly arranged at the air supply hole 11. The two adjusting units 2 may be generally symmetrically arranged in the circumferential direction of the ring body 1. The inlet of the air supply hole 11 located on the outer peripheral wall 13 of the ring body 1 may be located at a position between the two adjusting units 2. During use, the driving members 22 of the two adjusting units 2 can simultaneously drive the two moving members 21 to approach or move away from each other, so that the two moving members 21 can simultaneously adjust the supply amount of the cooling gas flowing through the air supply.

[0064] It should be noted that when only one adjusting unit 2 is configured in the air supply hole 11, a limiting portion may be provided at the inlet of the air supply hole 11. The limiting portion may be integrally formed on the ring body 1. During use, the limiting portion can block the moving member 21, so that the moving member 21 can be kept in the first position.

[0065] In some embodiments, the movable member 21 is provided with a groove 213. The groove 213 of each movable member 21 is provided on one side of the two movable members 21 facing each other. And in the first position, the grooves 213 of the two movable members 21 are combined into a vent hole, the vent hole is communicated with the air supply hole 11, and the aperture of the vent hole is smaller than that of the air supply hole 11.

[0066] For example, as Figure 4 shown, each movable member 21 may be provided with a groove 213. The groove 213 may be a semi-circular groove. When the two movable members 21 located at the same air supply hole 11 are both switched to the first position, the grooves 213 on the two movable members 21 can be combined into one body and form a vent hole. The vent hole may be a round hole. The cooling gas may first flow through the vent hole and then flow into the air supply hole 11.

[0067] Figure 4 In (a), there is no groove 213 on the movable member 21. At this time, when the two movable members 21 are close to each other in contact, the two movable members 21 can completely block the air supply hole 11. Figure 4 In (b), (c), and (d), the size of the groove 213 gradually increases. At this time, the size of the vent hole formed by combining the two grooves 213 also gradually increases, so as to meet the usage requirements of different specifications of the air supply hole 11.

[0068] In some embodiments, the adjusting unit 2 may further include an elastic member. For example, the elastic member may be a spring. The elastic member may be connected between the driving member 22 and the movable member 21. Under normal conditions, the elastic member can play a role in pulling the movable member 21, and the movable member 21 can be kept in the second position under the action of the elastic member. When an electric current is introduced into the driving member 22, the magnetic repulsive force generated between the driving member 22 and the movable member 21 can overcome the action of the elastic member and drive the movable member 21 to the first position.

[0069] In some other embodiments, an elastic member may also be provided between the two movable members 21. By the action of the elastic member, the two movable members 21 can be simultaneously kept in the first position or the second position under normal conditions.

[0070] In some embodiments, the ring body 1 includes an annular portion 14 and two annular edges 15. A plurality of air supply holes 11 are provided on the annular portion 14 and are arranged at intervals along the circumferential direction of the annular portion 14. The two annular edges 15 are both provided on the outer peripheral side of the annular portion 14 and extend along the circumferential direction of the annular portion 14 to form a closed loop, and the two annular edges 15 are opposite and spaced apart in the axial direction of the annular portion 14. The adjusting unit 2 is provided between the two annular edges 15.

[0071] For example, as Figure 3As shown, the annular portion 14 can be circular ring-shaped. Two annular edges 15 can be respectively disposed on the outer peripheral side of the annular portion 14 and protrude from the outer peripheral side of the annular portion 14. Both of the two annular edges 15 can be annular sheets, and the two annular edges 15 can be arranged at intervals in the axial direction of the ring body 1. Thus, the annular portion 14 and the two annular edges 15 can define an annular groove, and the above-mentioned adjusting unit 2 can be assembled in the above-mentioned annular groove, thereby playing a role of hidden protection for the adjusting unit 2.

[0072] The gas turbine according to an embodiment of the present invention will be described below.

[0073] The gas turbine according to an embodiment of the present invention includes a stator blade sealing ring 100, and the stator blade sealing ring 100 can be the stator blade sealing ring 100 described in any of the above embodiments. As Figure 5 and Figure 6 shown, the gas turbine may further include stator blades 200, rotor blades 300, a front wheel disc 400, a rear wheel disc 500, and a stationary stator 700. The front wheel disc 400 and the rear wheel disc 500 can be arranged opposite to each other in the axial direction of the gas turbine. The rotor blades 300 can be respectively installed on the outer peripheral sides of the front wheel disc 400 and the rear wheel disc 500.

[0074] As Figure 5 shown, a first ring portion 401 can be provided on the rear side of the front wheel disc 400, and a second ring portion 501 can be provided on the front side of the rear wheel disc 500. The first ring portion 401, the second ring portion 501, the front wheel disc 400, and the rear wheel disc 500 can define an annular cavity 600. The above-mentioned stator blade sealing ring 100 can be sleeved on the outer peripheral sides of the first ring portion 401 and the second ring portion 501. A first sealing structure can be provided between the stator blade sealing ring 100 and the first ring portion 401, and a second sealing structure can be provided between the stator blade sealing ring 100 and the second ring portion 501. The first sealing structure and the second sealing structure can be fingertip seals, honeycomb seals, etc.

[0075] As Figure 5 shown, the stator blade sealing ring 100 can be located on the outer peripheral sides of the first ring portion 401 and the second ring portion 501, while the above-mentioned stationary stator 700 can surround the outer peripheral side of the stator blade sealing ring 100. As Figure 6 shown, a plurality of stator blades 200 can be installed on the inner peripheral side of the stationary stator 700 and arranged at equal intervals along the circumferential direction of the stationary stator 700. The inner end of each stator blade 200 can be connected to the stator blade sealing ring 100, and the outer end of each stator blade 200 can be connected to the stationary stator 700. A disc cavity can be defined between each stator blade 200 and the stator blade sealing ring 100.

[0076] During use, the cooling gas can first flow into the disk cavity through the internal channel of the stationary blade 200, and then can flow into the above-mentioned annular cavity 600 through the plurality of air supply holes 11 on the stationary blade seal ring 100, so as to realize the cooling of the front wheel disk 400 and the rear wheel disk 500. And during the use process, the flow cross-sectional area of the air supply holes 11 can be adjusted through the adjustment unit 2 on the stationary blade seal ring 100, thereby meeting the usage requirements of supplying different amounts of cooling gas under different working conditions and improving the usage flexibility.

[0077] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0078] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0079] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Also, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0081] In the present invention, the terms "an embodiment", "some embodiments", "exemplifications", "specific exemplifications", or "some exemplifications", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or exemplification are included in at least one embodiment or exemplification of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or exemplification. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or exemplifications in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or exemplifications described in this specification and the features of the different embodiments or exemplifications.

[0082] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions, and variations made by those of ordinary skill in the art to the above embodiments are within the scope of protection of the present invention.

Claims

1. A stator blade seal ring, characterized in that, Comprising: A ring body, the ring body being provided with a plurality of air supply holes, the plurality of air supply holes being arranged at intervals along the circumferential direction of the ring body, and each air supply hole communicating with the inner peripheral wall and the outer peripheral wall of the ring body; An adjusting unit, the adjusting unit being provided at at least some of the air supply holes, the adjusting unit including a movable member and a driving member, the movable member being slidably assembled to the ring body and having a first position and a second position, in the first position, the movable member blocks at least some of the air supply holes, in the second position, the movable member releases the blockage of the air supply holes, the driving member being provided on the ring body, and the driving member being configured to drive the movable member to move between the first position and the second position so as to adjust the flow rate of the cooling gas flowing through the air supply holes.

2. The stator blade sealing ring according to claim 1, characterized in that, The driving member has a first state and a second state, in the first state, the driving member applies a first acting force to the movable member to drive the movable member to move towards the first position, in the second state, the driving member applies a second acting force to the movable member to drive the movable member to move towards the second position, and the directions of the first acting force and the second acting force are opposite.

3. The stationary blade sealing ring according to claim 2, characterized in that, The movable member is magnetically conductive, the driving member is electromagnetic, and one of the first acting force and the second acting force is a magnetic attraction force and the other is a magnetic repulsion force; In the first state, a first current is passed through the driving member so that the driving member generates the first acting force applied to the movable member, in the second state, a second current is passed through the driving member so that the driving member generates the second acting force applied to the movable member, and the directions of the first current and the second current are opposite.

4. The stationary blade sealing ring according to claim 3, characterized in that, The driving member includes a bracket and an electromagnet, the bracket being fixed to the ring body, and the electromagnet being mounted on the bracket.

5. The stator vane seal ring according to claim 4, characterized in that, The bracket is provided with a protruding portion, the movable member includes a first section and a second section, in the radial direction of the ring body, the thickness dimension of the first section is greater than the thickness dimension of the second section, the first section is arranged closer to the driving member than the second section, and the protruding portion is arranged towards the first section.

6. The stator blade sealing ring according to any one of claims 1-5, characterized in that The adjusting unit is provided on the outer peripheral wall of the ring body, the movable member and the driving member of the adjusting unit are arranged opposite to each other in the circumferential direction of the ring body, and the movable member is slidable along the circumferential direction of the ring body.

7. The stator blade sealing ring according to claim 6, characterized in that, Two adjusting units are provided at the air supply hole, the two adjusting units are arranged opposite to each other, the movable members of the two adjusting units are arranged between the driving members of the two adjusting units, and the driving members of the two adjusting units are respectively configured to drive the two movable members to move so as to jointly adjust the flow rate of the cooling gas of the air supply hole through the movement of the two movable members.

8. The stationary blade sealing ring according to claim 7, wherein, The movable member is provided with a groove, the groove of each movable member is provided on the side of the two movable members facing each other, and in the first position, the grooves of the two movable members are combined into a ventilation hole, the ventilation hole communicates with the air supply hole, and the aperture of the ventilation hole is smaller than the aperture of the air supply hole.

9. The stator vane seal ring according to any one of claims 1-5, characterized in that, The ring body includes: An annular part, and a plurality of the air supply holes are arranged on the annular part and spaced along the circumferential direction of the annular part; Two annular edges, both of the two annular edges are arranged on the outer peripheral side of the annular part and extend along the circumferential direction of the annular part to form a closed circle, and the two annular edges are opposite and spaced in the axial direction of the annular part, and the adjusting unit is arranged between the two annular edges.

10. A gas turbine, characterized in that, It includes the stator blade seal ring according to any one of claims 1-9 above.

Images