CN218476269U

CN218476269U - Gas turbine movable vane anchor clamps

Info

Publication number: CN218476269U
Application number: CN202223032563.8U
Authority: CN
Inventors: 傅琳; 刘庆阁; 张国栋; 张阔
Original assignee: Harbin Guanghan Power Technology Development Co ltd
Current assignee: Harbin Guanghan Power Technology Development Co ltd
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-02-14
Anticipated expiration: 2032-11-15

Abstract

The utility model relates to a gas turbine movable vane anchor clamps, the blade centre gripping groove that has adopted a plurality of equidistance carries out the centre gripping scheme to gas turbine movable vane, the beneficial effect is cup joint gas turbine movable transmission shaft on the spacing pipe of movable transmission shaft, and the inside of driving the spacing pipe of movable transmission shaft that the rotation through motor drive shaft drives fixed push rod and rises, make the spacing pipe of movable transmission shaft outwards expand and carry out the centre gripping to gas turbine movable transmission shaft's inner wall, then insert the inside in the blade centre gripping groove of angular distribution such as equidistance with gas turbine movable transmission shaft, and place the inside at the spacing groove with the blade centre gripping dish through the go-between and carry out spacingly, inwards promote gas turbine movable vane when the welded and make gas turbine movable vane's top and gas turbine movable transmission shaft overlap joint, thereby gas turbine movable vane's interval angle has been restricted, the effect of equidistance such as angle when having reached welding gas turbine movable vane, with promotion welded precision.

Description

Gas turbine movable vane anchor clamps

Technical Field

The utility model belongs to the technical field of gas turbine moving blade processingequipment, especially, relate to a gas turbine moving blade anchor clamps.

Background

The gas turbine is an internal combustion type power machine which takes continuously flowing gas as a working medium to drive an impeller to rotate at a high speed and converts the energy of fuel into useful work, and is a rotary impeller type heat engine.

According to the principle of gas turbine operation, the gas turbine moving blade, when welding, the inclination angle and the interval of the blade both can cause the influence to the work effect of gas turbine, so when welding, need to keep the inclination angle and the interval between every blade of gas turbine moving blade equal to when gas turbine is in operation, can stable operation, when the interval between gas turbine moving blades is different or the angle is different, the volume and the speed that the air current passes through will produce the difference because of the difference of angle and interval, this difference can be infinitely enlarged when gas turbine high speed operation, thereby cause the unstability of work, therefore the accuracy when welding, to a great extent has decided the quality of moving blade.

Through search, chinese patent publication No.: CN115008111B has announced "a gas turbine blade subassembly welding frock", including a supporting bench, seted up the mounting groove on the supporting bench, the lateral wall from the top down slidable mounting in proper order of supporting bench has inboard push rod, outside pull rod and bracing piece. This frock clamp can support a plurality of blades simultaneously admittedly on wheel hub's lateral wall, lies in the horizontal segment middle part of inserting and putting under the location push pedal pushing actions of both sides to the blade that prevents to place appears the slope, leads to blade fixed position inaccurate.

Therefore, when welding is carried out, the position accuracy of the gas turbine moving blade has important significance for guaranteeing the machining quality of the moving blade.

SUMMERY OF THE UTILITY MODEL

To the technical demand, the utility model aims to ensure the accuracy of position when the gas turbine moving blade welds, provide a gas turbine moving blade anchor clamps, the scheme that the blade centre gripping groove of having adopted a plurality of equidistance carries out the centre gripping to the gas turbine moving blade, beneficial effect is through keeping equidistance and wait the angle between the blade centre gripping groove messenger gas turbine moving blade to promote welded precision.

The purpose of the utility model is realized like this:

a gas turbine moving blade clamp comprising: the gas turbine power transmission mechanism comprises a base mechanism, a transmission shaft limiting mechanism, a blade clamping mechanism, a gas turbine power transmission shaft and a gas turbine power transmission blade, wherein the top of the base mechanism is fixedly connected with the transmission shaft limiting mechanism;

the base mechanism includes: the supporting base is provided with a lifting groove in the axis center, the inner wall of the lifting groove is provided with a limiting sliding groove in the inner wall, a motor is further mounted on the axis center of the supporting base, a motor transmission shaft of the motor extends to the axis center of the lifting groove, and a fixed push rod is connected to the outer surface of the motor transmission shaft in a threaded manner;

the transmission shaft limiting mechanism comprises: the gas turbine engine transmission shaft supporting device comprises a supporting disc, a limiting groove, a movable transmission shaft limiting pipe and an expansion groove, wherein the top of the supporting disc is provided with the limiting groove for limiting, the axis of the supporting disc is fixedly connected with the movable transmission shaft limiting pipe for clamping a gas turbine engine transmission shaft, and the outer surface of the movable transmission shaft limiting pipe is provided with the expansion groove;

the blade clamping mechanism comprises: blade grip block, go-between and blade centre gripping groove, the bottom fixedly connected with go-between of blade grip block, the blade centre gripping groove that the equidistance distributes is seted up at the top of blade grip block.

Preferably, the inside of supporting the base is the cavity, and the motor is installed in the axle center of supporting the base cavity, and the motor drive shaft on the motor is the threaded rod.

Preferably, the axle center of fixed push rod bottom is seted up threaded hole, and threaded hole and motor drive axle threaded connection, the outer fixed surface of fixed push rod is connected with the slide bar, and the inside that the slide bar extends to spacing spout is spacing.

Preferably, the outer diameters of the supporting disc and the supporting base are equal, and the supporting base and the supporting disc are connected through bolts.

Preferably, the through hole in the movable transmission shaft limiting pipe penetrates to the bottom of the supporting disc, the inner part of the movable transmission shaft limiting pipe is a tapered hole which is large in the upper part and small in the lower part, and the fixed push rod is fixed to the inner bottom of the movable transmission shaft limiting pipe.

Preferably, the middle of the blade clamping disc is a through hole, the connecting ring is inserted at the back of the limiting groove to be limited, and the bottom of the blade clamping disc is in lap joint with the top of the supporting disc.

Preferably, elastic pieces are fixedly connected to both sides of the inner wall of the blade holding groove, and the elastic pieces can deform and hold the outer surface of the gas turbine moving blade.

Has the advantages that:

first, this gas turbine moving blade anchor clamps have the effect that keeps gas turbine moving blade welding equidistance equiangular: the movable transmission shaft of the gas turbine is sleeved on the movable transmission shaft limiting pipe, the fixed push rod is driven to ascend through the rotation of the motor transmission shaft to pressurize the conical interior of the movable transmission shaft limiting pipe, the movable transmission shaft limiting pipe is expanded outwards along the expansion groove to clamp the inner wall of the movable transmission shaft of the gas turbine, the movable transmission shaft of the gas turbine is kept at the axis of the supporting disc, the movable transmission shaft of the gas turbine is inserted into the blade clamping grooves which are distributed at equal intervals and at equal angles, the blade clamping discs are placed in the limiting grooves for limiting through the connecting rings, the movable blades of the gas turbine are pushed inwards during welding to enable the top ends of the movable blades of the gas turbine to be in lap joint with the movable transmission shaft of the gas turbine, the interval angles of the movable blades of the gas turbine are limited due to the equal intervals and equal angles of the blade clamping grooves, the effect of equal intervals and equal angles during welding of the movable blades of the gas turbine is achieved, and the welding precision is improved.

Second, this gas turbine movable vane anchor clamps have the effect of conveniently taking out the product: through set up open blade centre gripping groove in top at the top of blade centre gripping dish to make the equal angular distribution of blade centre gripping groove equidistance, when gas turbine movable transmission shaft and gas turbine moving blade welding become a whole, through rotating gas turbine movable transmission shaft, make gas turbine moving blade rotate along the opening direction in blade centre gripping groove, can break away from all gas turbine moving blades from the inside in blade centre gripping groove, reached the effect that conveniently takes out the finished product.

Drawings

FIG. 1 is a schematic view of a clamped gas turbine blade according to the present invention;

FIG. 2 is an assembly view of the present invention;

FIG. 3 is a schematic view of the connection between the base mechanism and the transmission shaft limiting mechanism of the present invention;

FIG. 4 is an enlarged view of the structure A in FIG. 2 according to the present invention;

FIG. 5 is a schematic view of the blade holding mechanism of the present invention;

fig. 6 is an enlarged view of a structure B in fig. 5 according to the present invention.

In the figure: 1. a base mechanism; 101. a support base; 102. a lifting groove; 103. a limiting chute; 104. a motor transmission shaft; 105. fixing the push rod; 2. a transmission shaft limiting mechanism; 201. supporting the disc; 202. a limiting groove; 203. a movable transmission shaft limiting pipe; 204. an expansion tank; 3. a blade clamping mechanism; 301. a blade holding plate; 302. a connecting ring; 303. a blade holding groove; 304. an elastic sheet; 4. a gas turbine power transmission shaft; 5. a gas turbine rotor blade.

Detailed Description

The following description will be made in detail with reference to the accompanying drawings.

A gas turbine blade fixture according to this embodiment, as shown in fig. 1 to 6, includes: the gas turbine power transmission mechanism comprises a base mechanism 1, a transmission shaft limiting mechanism 2, a blade clamping mechanism 3, a gas turbine power transmission shaft 4 and a gas turbine moving blade 5, wherein the top of the base mechanism 1 is fixedly connected with the transmission shaft limiting mechanism 2, the blade clamping mechanism 3 is placed at the top of the transmission shaft limiting mechanism 2, the axis of the transmission shaft limiting mechanism 2 clamps the gas turbine power transmission shaft 4, and the gas turbine moving blade 5 is inserted into the blade clamping mechanism 3, so that the gas turbine moving blade 5 is contacted with the gas turbine power transmission shaft 4 at equal intervals and at equal angles;

the base mechanism 1 includes: the supporting base 101, the lifting groove 102, the limiting sliding groove 103, the motor transmission shaft 104 and the fixed push rod 105, wherein the lifting groove 102 is formed in the axis of the supporting base 101, the limiting sliding groove 103 is formed in the inner wall of the lifting groove 102, the motor is further installed on the axis of the supporting base 101, the motor transmission shaft 104 of the motor extends to the axis of the lifting groove 102, and the fixed push rod 105 is connected to the outer surface of the motor transmission shaft 104 in a threaded mode;

transmission shaft stop gear 2 includes: the gas turbine engine transmission shaft supporting device comprises a supporting disc 201, a limiting groove 202, a movable transmission shaft limiting pipe 203 and an expansion groove 204, wherein the limiting groove 202 for limiting is formed in the top of the supporting disc 201, the movable transmission shaft limiting pipe 203 for clamping the gas turbine engine transmission shaft 4 is fixedly connected to the axis of the supporting disc 201, and the expansion groove 204 is formed in the outer surface of the movable transmission shaft limiting pipe 203;

the blade holding mechanism 3 includes: blade centre gripping dish 301, go-between 302 and blade centre gripping groove 303, the bottom fixedly connected with go-between 302 of blade centre gripping dish 301, blade centre gripping groove 303 that the equidistance distributes is seted up at the top of blade centre gripping dish 301.

Through the technical scheme, the gas turbine movable transmission shaft 4 is sleeved on the movable transmission shaft limiting pipe 203, the fixed push rod 105 is driven to ascend through the rotation of the motor transmission shaft 104 to pressurize the conical interior of the movable transmission shaft limiting pipe 203, so that the movable transmission shaft limiting pipe 203 outwards expands along the expansion groove 204 to clamp the inner wall of the gas turbine movable transmission shaft 4, the gas turbine movable transmission shaft 4 is kept at the axis of the supporting disc 201, then the gas turbine movable transmission shaft 4 is inserted into the interior of the vane clamping grooves 303 which are equidistantly and equiangularly distributed, the vane clamping discs 301 are placed in the interior of the limiting grooves 202 through the connecting rings 302 to be limited, the gas turbine movable vane 5 is inwards pushed during welding to enable the top end of the gas turbine movable vane 5 to be lapped with the gas turbine movable transmission shaft 4, the interval angle of the gas turbine movable vane 5 is limited due to the equidistant equal-angle parts of the vane clamping grooves 303, and the equal-angle effect during welding of the gas turbine movable vane 5 is achieved, and the welding precision of equal-distance welding is improved;

the top of the blade holding disc 301 is provided with the blade holding grooves 303 with the top opened, and the blade holding grooves 303 are distributed at equal intervals and equal angles, when the gas turbine movable transmission shaft 4 and the gas turbine movable blade 5 are welded into a whole, the gas turbine movable transmission shaft 4 is rotated to rotate the gas turbine movable blade 5 along the opening direction of the blade holding grooves 303, so that all the gas turbine movable blades 5 can be separated from the inside of the blade holding grooves 303, and the effect of conveniently taking out finished products is achieved.

Specifically, the supporting base 101 has a cavity inside, the motor is mounted on the axis of the cavity of the supporting base 101, and the motor transmission shaft 104 on the motor is a threaded rod.

Through above-mentioned technical scheme, set the cavity to in the inside of supporting base 101 to make the motor can install in the temple of supporting base 101, drive motor drive shaft 104 through the motor and rotate, thereby drive fixed push rod 105 through motor drive shaft 104 and fixed push rod 105's threaded connection and go up and down to pressurize the inside of moving the spacing pipe 203 of transmission shaft.

Specifically, a threaded hole is formed in the axis of the bottom of the fixed push rod 105, the threaded hole is in threaded connection with the motor transmission shaft 104, a slide rod is fixedly connected to the outer surface of the fixed push rod 105, and the slide rod extends to the inside of the limiting sliding groove 103 to be limited.

Through the technical scheme, the threaded hole is formed in the bottom of the fixed push rod 105 and used for being matched with the motor transmission shaft 104, the fixed push rod 105 is lifted through the matching between threads, the outer surface of the fixed push rod 105 is fixedly connected with the slide rod, and therefore the fixed push rod 105 rotates with the motor transmission shaft 104 when the transmission of the motor transmission shaft 104 is avoided through the matching of the slide rod and the limiting slide groove 103, and the lifting function cannot be achieved.

Specifically, the outer diameters of the supporting disc 201 and the supporting base 101 are equal, and the supporting base 101 and the supporting disc 201 are connected by bolts.

Through the technical scheme, the size of the supporting disc 201 is set, so that the top of the supporting base 101 is completely covered by the supporting disc 201, meanwhile, the supporting disc 201 is fixed at the top of the supporting base 101 through bolts, the movable transmission shaft limiting pipe 203 and the fixed push rod 105 can be coaxial, and the axis is located at the center of the whole device after the movable transmission shaft 4 of the gas turbine is installed and fixed.

Specifically, a through hole in the movable transmission shaft limiting tube 203 penetrates to the bottom of the support disc 201, the interior of the movable transmission shaft limiting tube 203 is a tapered hole with a small top and a large bottom, and the fixed push rod 105 is arranged along the inner bottom of the movable transmission shaft limiting tube 203.

Through the technical scheme, the through hole in the middle of the movable transmission shaft limiting pipe 203 is used for enabling the top of the fixed push rod 105 to enter the interior of the movable transmission shaft limiting pipe 203 and extruding the interior of the movable transmission shaft limiting pipe 203 through conical diameter change, so that the outer surface of the movable transmission shaft limiting pipe 203 can expand outwards through the expansion groove 204 to form clamping force on the inner wall of the gas turbine power transmission shaft 4, and the gas turbine power transmission shaft 4 is ensured to be fixed in the center and stable.

Specifically, the middle of the blade holding disc 301 is a through hole, the connecting ring 302 is inserted into the back of the limiting groove 202 to be limited, and the bottom of the blade holding disc 301 is overlapped with the top of the supporting disc 201.

Through the technical scheme, the through hole in the middle of the blade clamping disc 301 is used for enabling the gas turbine movable transmission shaft 4 to be inserted into the movable transmission shaft limiting pipe 203, if the gas turbine movable blade 5 is welded from the bottom of the gas turbine movable transmission shaft 4, the diameter of the through hole in the middle of the blade clamping disc 301 is smaller than the outer diameter of the gas turbine movable transmission shaft 4, and the welding position of the gas turbine movable blade 5 is located in the middle of the gas turbine movable transmission shaft 4, the diameter of the through hole in the middle of the blade clamping disc 301 is larger than the diameter of the gas turbine movable transmission shaft 4, so that the bottom of the gas turbine movable transmission shaft 4 can be lapped with the top of the supporting disc 201.

Specifically, the elastic pieces 304 are fixedly connected to both sides of the inner wall of the blade holding groove 303, and the elastic pieces 304 are deformable and hold the outer surface of the gas turbine rotor blade 5.

With the above-described configuration, the elastic piece 304 having elasticity is provided inside the blade holding groove 303, so that the elastic piece 304 further holds the surface of the gas turbine moving blade 5, thereby preventing the gas turbine moving blade 5 from wobbling inside the blade holding groove 303, and by deformation between the elastic pieces 304, the gas turbine moving blade 5 having different thicknesses can be held, thereby increasing the usable range of the device.

It should be noted that while particular embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A gas turbine moving blade clamp comprising: the gas turbine power transmission mechanism is characterized in that the top of the base mechanism (1) is fixedly connected with the transmission shaft limiting mechanism (2), the blade clamping mechanism (3) is placed at the top of the transmission shaft limiting mechanism (2), the gas turbine power transmission shaft (4) is clamped at the axis of the transmission shaft limiting mechanism (2), the gas turbine power transmission shaft (4) is inserted into the blade clamping mechanism (3), and the gas turbine moving blades (5) are contacted with the gas turbine power transmission shaft (4) at equal intervals and at equal angles;

the base mechanism (1) comprises: the lifting mechanism comprises a supporting base (101), a lifting groove (102), a limiting sliding groove (103), a motor transmission shaft (104) and a fixed push rod (105), wherein the lifting groove (102) is formed in the axis of the supporting base (101), the limiting sliding groove (103) is formed in the inner wall of the lifting groove (102), a motor is further installed on the axis of the supporting base (101), the motor transmission shaft (104) of the motor extends to the axis of the lifting groove (102), and the fixed push rod (105) is connected to the outer surface of the motor transmission shaft (104) in a threaded mode;

the transmission shaft limiting mechanism (2) comprises: the device comprises a supporting disc (201), a limiting groove (202), a movable transmission shaft limiting pipe (203) and an expansion groove (204), wherein the limiting groove (202) for limiting is formed in the top of the supporting disc (201), the shaft center of the supporting disc (201) is fixedly connected with the movable transmission shaft limiting pipe (203) for clamping a gas turbine power transmission shaft (4), and the expansion groove (204) is formed in the outer surface of the movable transmission shaft limiting pipe (203);

the blade holding mechanism (3) includes: blade grip disc (301), go-between (302) and blade centre gripping groove (303), the bottom fixedly connected with go-between (302) of blade grip disc (301), blade centre gripping groove (303) that the equidistance distributes are seted up at the top of blade grip disc (301).

2. The gas turbine moving blade clamp as claimed in claim 1, wherein the supporting base (101) is internally provided with a cavity, the motor is mounted at the axis of the cavity of the supporting base (101), and a motor transmission shaft (104) on the motor is a threaded rod.

3. The gas turbine movable vane clamp as claimed in claim 1, wherein a threaded hole is formed in the axis of the bottom of the fixed push rod (105), the threaded hole is in threaded connection with the motor transmission shaft (104), a slide rod is fixedly connected to the outer surface of the fixed push rod (105), and the slide rod extends to the inside of the limiting sliding groove (103) and is limited.

4. The gas turbine blade fixture according to claim 1, wherein the outer diameter of the support disk (201) is equal to the outer diameter of the support base (101), and the support base (101) and the support disk (201) are connected by bolts.

5. The gas turbine moving blade clamp as claimed in claim 1, wherein the through hole in the moving transmission shaft limiting pipe (203) penetrates to the bottom of the supporting disk (201), the inside of the moving transmission shaft limiting pipe (203) is a tapered hole with a shape of a small top and a big bottom, and the fixing push rod (105) is arranged along the inner bottom of the moving transmission shaft limiting pipe (203).

6. The gas turbine moving blade clamp as claimed in claim 1, wherein the middle of the blade clamping disc (301) is a through hole, the connecting ring (302) is inserted into the back of the limiting groove (202) to be limited, and the bottom of the blade clamping disc (301) is overlapped with the top of the supporting disc (201).

7. The gas turbine blade fixture according to claim 1, wherein an elastic piece (304) is fixedly connected to each of both sides of an inner wall of the blade holding groove (303), and the elastic piece (304) is deformable and holds an outer surface of the gas turbine blade (5).