JP3382746B2 - Inner tube removal insertion tool - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool used for removing an inner cylinder of a gas turbine combustor from a transition piece and inserting the inner cylinder into the transition piece. 2. Description of the Related Art FIG. 2 is a schematic explanatory view showing an attached state of a gas turbine combustor. [0003] In the figure, a fuel nozzle 22 is mounted and supported by an outer casing 21 of a vehicle. At the tip of the fuel nozzle 22, a combustor inner cylinder 23 is inserted and attached to a transition piece 24. [0004] The inner cylinder 23 of the combustor must be able to be pulled out and inserted by partial opening around the cabin for inspection of a high temperature portion or for disassembly and assembly. [0005] Therefore, the mounting portion of the inner cylinder and the tail cylinder uses a spring clip and can be fixed only by pushing in from the inner cylinder side. Reference numeral 25 is a fixing device for the transition piece 24. [0006] The inner cylinder of the combustor is constructed so that it can be pulled out and inserted by partial release around the cabin in order to inspect and disassemble the high temperature part. However, pulling out the inner cylinder after removing the fuel nozzle and the outer cylinder is impossible with human power because of spring clipping. This is the same at the time of insertion. Further, there is some deviation between the center of the inner cylinder and the center of the outer cylinder seat, which also makes workability difficult. Conventionally, therefore, work is carried out together with a heavy outer cylinder which is a part of the cabin of a gas turbine using a lifting device such as a chain block or a hoist, which increases the cost and labor. There was a problem. An object of the present invention is to provide a new inner cylinder removal / insertion tool for canceling the above-mentioned disadvantages. [0011] In order to achieve the above-mentioned object, an inner cylinder take-out and insertion tool according to the present invention is provided as a tool used for taking out and inserting a gas turbine inner pipe. One long column screwed into the flange surface of the outer cylinder seat, and two types of columns having different lengths consisting of two short columns, and on the upper side of each column,
Attach the housing with the female threaded bush to the center and at a slightly eccentric location, screw the screw rod into the female threaded bush, attach a disk-shaped holder to the tip of the screw rod, and rotate the screw rod. Then, the holder is lowered until it comes into contact with the flange surface of the end surface of the inner cylinder from which the fuel nozzle has been removed, so that the holder and the inner cylinder flange surface can be bolted, so that only the inner cylinder can be pulled out. It is characterized by doing. The center of the inner cylinder of the gas turbine combustor and the center of the outer casing of the vehicle compartment (combustor insertion port) are manufactured with some deviation. Therefore, if the length of the column screwed into the outer casing of the vehicle cabin is the same, the center of the holder attached to the tip of the screw rod attached to the center of the housing passed over the column is displaced by the amount of displacement. In the present invention, the housing is mounted to change the length of the column in order to correct the displacement. As a result, the housing is parallel to the inner cylinder,
Further, the screw rod can be directed toward the center by mounting the screw rod so that the center of the housing is eccentric. Then, a deviation between the inner cylinder and the center of the outer cylinder seat (combustor insertion port) is corrected. Further, the detachment and insertion can be performed only by operating the handle, so that the operation can be performed only by human power. In addition, because of the assembly structure and the light weight, it can be carried regardless of the factory or site. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an installation diagram of an inner tube take-out and insertion tool according to an embodiment of the present invention. In the drawing, one long column 2A and two short columns 2B are screwed into three sides of the seating surface 1 of the outer cylinder seat of the gas turbine. On the upper side of the columns 2A and 2B, a housing 4 having three holes to be fitted in the columns and having a bush 3 with a female thread mounted in the center is mounted. A screw rod 5 is screwed into the threaded bush 3 so as to be slightly eccentric from the center of the housing 4, and a disk-shaped holder 6 is mounted below the screw rod 5. A handlebar 7 is mounted on the upper side of the screw rod 5, and by operating the handlebar 7, the holder 6 is attached to the end face flange 9 of the inner cylinder 8 of the gas turbine combustor from which the combustion nozzle has been removed. It is abutted and bolted. By using the essentials having such a structure, when removing the holder 6 by turning the handlebar 7 to the imaginary line position, the inner cylinder 8 is pulled out from the transition piece (not shown). be able to. It should be noted that the same operation can be used to easily insert the inner cylinder. Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and can be designed and changed within the scope of the technical idea of the present invention. Belongs to the technical scope of According to the inner cylinder removing and inserting tool of the present invention, the operation of removing the inner cylinder of the gas turbine combustor from the transition piece and inserting the transition piece into the transition piece is simplified. This reduces man-hours and eliminates the need for lifting equipment such as chain blocks and hoists, thus increasing safety. Further, the essential components have a disassembled and assembled structure and the parts are reduced in weight, so that the components are compact and workability is remarkably improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a mounting view of an inner tube take-out and insertion tool according to one embodiment of the present invention. FIG. 2 is a schematic diagram showing an attached state of a conventional gas turbine combustor. [Description of Signs] 1 Outer cylinder seats 2A, 2B of vehicle compartment Column 3 Bush 4 Housing 5 Screw rod 6 Holder 7 Handle 8 Inner cylinder 9 Inner cylinder end face flange

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F02C 1/00-9/58 F23R 3/00-7/00

Claims (1)

(57) [Claims 1] A long length comprising one long column screwed into the flange surface of the outer cylinder seat of the gas turbine casing and two short columns. Two different types of columns,
At the upper part of each column, a housing with a female threaded bush is attached at the center and at a slightly eccentric location, and a screw rod is screwed into the female threaded bush, and a disk-shaped holder is attached to the tip of the screw rod. By mounting and rotating the screw rod, the holder is lowered until it comes into contact with the flange surface of the end surface of the inner cylinder from which the fuel nozzle has been removed, and the holder and the inner cylinder flange surface can be bolted, thereby pulling out only the inner cylinder. And a tool for taking out and inserting a gas turbine inner cylinder configured to enable the above-mentioned operations.