Auxiliary actuating cylinder of rotatable guide vane rotating mechanism of gas turbine

Abstract

The invention provides an auxiliary actuator cylinder of a rotatable guide vane rotating mechanism of a gas turbine. The auxiliary actuator cylinder comprises a body; the cover plate covers the top of the outer side face of the body, a plurality of rotating seats are fixedly installed on the outer side face of the cover plate, rotating grooves are formed in the side faces of the rotating seats, and limiting pieces are arranged on the inner side faces of the rotating grooves. According to the auxiliary actuator cylinder of the rotatable guide vane rotating mechanism of the gas turbine, through mutual cooperation of the body, the cover plate, the rotating seat, the rotating groove, the rotating shaft, the limiting piece, an outer threaded ring, an inner threaded ring, a baffle and other structures, when the interior of the body needs to be maintained, only the inner threaded ring needs to be rotated, the baffle is driven to be away from the limiting piece, and the inner threaded ring is rotated; and then the limiting piece is rotated to be far away from the inner threaded ring, then the cover plate is moved to the end far away from the body, and the cover plate can be disassembled, so that a worker can conveniently maintain the interior of the body, and the working efficiency is also improved.

Description

Technical Field

[0001] The invention relates to the field of mechanical manufacturing, and in particular to an auxiliary actuator cylinder of a rotatable guide vane rotating mechanism of a gas turbine. Background Art

[0002] In order to solve the problem of insufficient surge margin of gas turbines under low or variable operating conditions, three effective methods, namely, rotatable guide vanes, intermediate stage air bleed, and anti-surge treatment casing, have been widely used in the anti-surge structure design of gas turbines. Among them, the rotatable guide vane structure requires an external power source to drive the rotatable guide vanes to rotate, thereby requiring the use of an auxiliary actuator.

[0003] For example, in the prior art, an auxiliary actuator cylinder of a gas turbine rotatable guide vane rotation mechanism comprises a power piston, a power spring, an auxiliary actuator cylinder housing, an auxiliary actuator cylinder cover, an adjusting bushing, bolts and a pipe joint; the auxiliary actuator cylinder housing and the auxiliary actuator cylinder cover are fastened and connected by bolts to form a sealed chamber for the power piston to move; a first sealing ring is provided at the connection between the power piston and the auxiliary actuator cylinder housing; a pipe joint is provided on the auxiliary actuator cylinder cover, and the pipe joint is communicated with the power piston; the power spring is filled in the auxiliary actuator cylinder housing and the auxiliary actuator cylinder cover, and surrounds the power piston; the present invention utilizes the situation that the gas pressure difference at the same part of the compressor increases when the working condition of the gas turbine increases, and the gas pressure difference at the same part of the compressor decreases when the working condition decreases, as the power source for the actuator action, so as to realize the combination of the action of the actuator and the operating condition of the gas turbine, and realize adaptive rotatable guide vane adjustment.

[0004] However, after the equipment has been used for a long time, when the components inside the auxiliary actuator housing need to be maintained, the user needs to turn multiple bolts before the auxiliary actuator cover can be disassembled and then maintenance can be performed. This is not only inconvenient for the staff to perform maintenance, but also reduces work efficiency.

[0005] Therefore, it is necessary to provide an auxiliary actuator for a gas turbine guide vane rotation mechanism to solve the above technical problems. Summary of the invention

[0006] The present invention provides an auxiliary actuator for a rotatable guide vane rotating mechanism of a gas turbine, which solves the problem that multiple bolts need to be rotated before disassembly, which is not only inconvenient for maintenance staff but also reduces work efficiency.

[0007] In order to solve the above technical problems, the present invention provides an auxiliary actuator of a gas turbine guide vane rotation mechanism, comprising:

[0008] ontology;

[0009] A cover plate, wherein the cover plate cover is arranged on the top of the outer side surface of the body, a plurality of rotating seats are fixedly installed on the outer side surface of the cover plate, a plurality of rotating seats are provided with rotating grooves on the sides, and a limiting member is provided on the inner side surface of the rotating groove;

[0010] An external thread ring is fixedly mounted on the outer side surface of the body, the outer side surface of the external thread ring is threadedly connected with an internal thread ring, and a baffle is fixedly mounted on the outer side surface of the internal thread ring.

[0011] Preferably, a power piston is provided at the bottom of the body.

[0012] Preferably, the bottom of the baffle abuts against the top of the limiting member.

[0013] Preferably, a plurality of rotating rods are fixedly mounted on the side surface of the inner thread ring, and the outer side surfaces of the plurality of rotating rods are all covered with rubber sleeves.

[0014] Preferably, a rotating shaft is rotatably connected to the interior of the top of the limiting member, and two ends of the rotating shaft are respectively rotated to be connected to two sides of the inner side surface of the rotating groove.

[0015] Compared with the related art, the auxiliary actuator of the gas turbine guide vane rotation mechanism provided by the present invention has the following beneficial effects:

[0016] The present invention provides an auxiliary actuator cylinder of a rotatable guide vane rotating mechanism of a gas turbine, which cooperates with each other through structures such as a main body, a cover plate, a rotating seat, a rotating groove, a rotating shaft, a limit piece, an external thread ring, an internal thread ring and a baffle. When maintenance is required inside the main body, it is only necessary to rotate the internal thread ring to drive the baffle away from the limit piece, and then rotate the limit piece to make the limit piece away from the internal thread ring, and then move the cover plate to an end away from the main body, so that the cover plate can be disassembled. This makes it convenient for staff to maintain the interior of the main body and also increases work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a first embodiment of an auxiliary actuator of a gas turbine rotatable guide vane rotating mechanism provided by the present invention;

[0018] Figure 2 for Figure 1 Another perspective structural schematic diagram shown;

[0019] Figure 3 for Figure 1 The schematic diagram of the limiter structure is shown.

[0020] Numbers in the figure: 1, body, 11, power piston, 2, cover plate, 21, rotating seat, 22, rotating groove, 23, rotating shaft, 24, limiting member, 3, external thread ring, 31, internal thread ring, 32, baffle. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0022] First embodiment

[0023] Please refer to Figure 1 , Figure 2 , Figure 3 ,in, Figure 1 A schematic structural diagram of a first embodiment of an auxiliary actuator of a gas turbine rotatable guide vane rotating mechanism provided by the present invention; Figure 2 for Figure 1 Another perspective structural schematic diagram shown; Figure 3 for Figure 1 The schematic diagram of the limiter structure is shown. An auxiliary actuator of a gas turbine guide vane rotation mechanism comprises: a body 1;

[0024] A cover plate 2, the cover plate 2 is arranged on the top of the outer side of the body 1, a plurality of rotating seats 21 are fixedly mounted on the outer side of the cover plate 2, a rotating groove 22 is formed on the side of each of the rotating seats 21, and a limiting member 24 is provided on the inner side of the rotating groove 22;

[0025] The outer thread ring 3 is fixedly mounted on the outer side surface of the body 1 , the outer side surface of the outer thread ring 3 is threadedly connected with the inner thread ring 31 , and the outer side surface of the inner thread ring 31 is fixedly mounted with a baffle 32 .

[0026] A power piston 11 is disposed at the bottom of the body 1 .

[0027] The bottom of the baffle 32 abuts against the top of the limiting member 24 .

[0028] The limiting member 24 is L-shaped. When in use, the top of the limiting member 24 abuts against the bottom of the baffle 32 , so that the cover plate 2 can be pulled toward one end of the body 1 , thereby limiting the cover plate 2 .

[0029] A plurality of rotating rods 33 are fixedly mounted on the side surface of the inner thread ring 31 , and the outer side surfaces of the plurality of rotating rods 33 are all covered with rubber sleeves 34 .

[0030] By setting the rotating rod 33 , when in use, it is convenient for the user to rotate the rotating rod 33 , thereby driving the internal thread ring 31 to rotate.

[0031] The top of the stopper 24 is internally rotatably connected with a rotating shaft 23 , and two ends of the rotating shaft 23 are respectively rotated and connected to two sides of the inner side surface of the rotating groove 22 .

[0032] The working principle of the auxiliary actuator of the gas turbine rotatable guide vane rotation mechanism provided by the present invention is as follows:

[0033] When maintenance is needed, the user can rotate the internal thread ring 31 so that the internal thread ring 31 is threadedly connected to the outer side of the external thread ring 3, so that the internal thread ring 31 drives the baffle 32 to move toward one end of the cover plate 2, thereby moving the baffle 32 away from the limit member 24. The user can then rotate the limit member 24, so that the limit member 24 drives the rotating shaft 23 to rotate on both sides of the inner side of the rotating groove 22, so that one end of the limit member 24 is away from the internal thread ring 31. At this time, the cover plate 2 is moved to the side away from the main body 1, and the cover plate 2 can be removed from the top of the main body 1, which makes it convenient for the user to maintain the components inside the main body 1.

[0034] Compared with the related art, the auxiliary actuator of the gas turbine guide vane rotation mechanism provided by the present invention has the following beneficial effects:

[0035] By means of the cooperation of structures such as the main body 1, the cover plate 2, the rotating seat 21, the rotating groove 22, the rotating shaft 23, the limit piece 24, the external thread ring 3, the internal thread ring 31 and the baffle plate 32, when maintenance is needed on the inside of the main body 1, it is only necessary to rotate the internal thread ring 31 to drive the baffle plate 32 away from the limit piece 24, and then rotate the limit piece 24 to make the limit piece 24 away from the internal thread ring 31, and then move the cover plate 21 to the end away from the main body 1, so that the cover plate 2 can be disassembled. This makes it convenient for the staff to maintain the inside of the main body 1 and also increases the work efficiency.

[0036] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An auxiliary actuator for a gas turbine guide vane rotation mechanism, characterized in that: include: ontology; A cover plate, wherein the cover plate cover is arranged on the top of the outer side surface of the body, a plurality of rotating seats are fixedly installed on the outer side surface of the cover plate, a plurality of rotating seats are provided with rotating grooves on the sides, and a limiting member is provided on the inner side surface of the rotating groove; An external thread ring is fixedly mounted on the outer side surface of the body, the outer side surface of the external thread ring is threadedly connected with an internal thread ring, and a baffle is fixedly mounted on the outer side surface of the internal thread ring.

2. The auxiliary actuator of the rotatable guide vane rotating mechanism of a gas turbine according to claim 1, characterized in that: A power piston is arranged at the bottom of the body.

3. The auxiliary actuator of the rotatable guide vane rotating mechanism of a gas turbine according to claim 1, characterized in that: The bottom of the baffle abuts against the top of the limiting component.

4. The auxiliary actuator of the rotatable guide vane rotating mechanism of a gas turbine according to claim 1, characterized in that: A plurality of rotating rods are fixedly mounted on the side surface of the inner thread ring, and the outer side surfaces of the plurality of rotating rods are all sleeved with rubber sleeves.

5. The auxiliary actuator of the rotatable guide vane rotating mechanism of a gas turbine according to claim 1, characterized in that: The top of the position-limiting member is internally rotatably connected with a rotating shaft, and two ends of the rotating shaft are respectively rotated to be connected to two sides of the inner side surface of the rotating groove.

Images