Dismounting tool for intercooler of indirect cooling cycle gas turbine

Abstract

The invention provides a dismounting tool for an intercooler of an indirect cooling cycle gas turbine. The dismounting tool comprises a front connecting plate, a rear connecting plate, a lateral connecting plate, a bottom connecting plate, a lead screw pull rod mechanism and an auxiliary roller structure. The front connecting plate and the rear connecting plate are connected through the lateral connecting plate and the bottom connecting plate; the lead screw pull rod mechanism comprises a handle, a lead screw, a connecting rod and a bayonet lock; the top of the lead screw is connected with the handle, the lead screw penetrates through the front connecting plate and is in threaded connection with the front connecting plate, the bottom of the lead screw is connected with the connecting rod, and a clamping pin is arranged on the connecting rod and connected with a lifting lug on the upper end face of the intercooler. And auxiliary roller structures are arranged on the lateral connecting plate and the bottom connecting plate. The device is simple in structure, convenient to install and suitable for being operated in a narrow space, the disassembly and assembly difficulty of the intercooler is reduced, and meanwhile damage to the end face of the intercooler is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of gas turbines, and in particular relates to a disassembly tool for an intercooler of an intercooled cycle gas turbine. Background Art

[0002] Gas turbine is an internal combustion power machine that uses continuous flow of gas as working fluid to drive the impeller to rotate at high speed, converting the energy of fuel into useful work. It is a rotating impeller heat engine. The low-pressure compressor of the gas turbine compresses the gas, and while increasing the gas pressure, it also increases the temperature of the gas. According to the analysis of engineering thermodynamics, it takes more compression work for high-temperature gas to enter the high-pressure compressor for compression. Therefore, it is considered to arrange an intercooler between the high and low pressure compressors to cool the temperature of the low-pressure compressor outlet and reduce the power consumption of the high-pressure compressor.

[0003] At present, for gas turbines with intercooler structures, the intercooler is arranged as a multi-module design along the circumference, considering the layout and installation of the intercooler, and the single module is installed and disassembled along the axial direction. Since the intercooler is a high-efficiency compact heat exchanger, the heat exchange coefficient and heat exchange area are relatively large, resulting in a large weight of the intercooler (more than 300kg for a single module). Once an intercooler failure occurs, it needs to be disassembled and replaced along the axial direction, which is difficult to disassemble and assemble. At the same time, in order to ensure the minimum leakage in the gap between the gas casing and the intercooler, the intercooler casing and the intercooler installation cross-sectional area are designed to be basically the same, and the gap between the two is small, making the replacement of the intercooler more difficult. Therefore, it is necessary to design a type of intercooler disassembly tool for intercooler cycle gas turbines to ensure that the intercooler can be disassembled and assembled smoothly and accurately, and to ensure the assembly performance of the gas turbine unit. Summary of the invention

[0004] The object of the present invention is to provide a disassembly tool for an intercooler of an intercooled cycle gas turbine, which is used to make the disassembly work of the intercooler simple and accurate.

[0005] A disassembly tool for an intercooler of an intercooled cycle gas turbine comprises a front connecting plate, a rear connecting plate, a lateral connecting plate, a bottom connecting plate, a lead screw pull rod mechanism and an auxiliary roller structure; the front connecting plate and the rear connecting plate are connected via the lateral connecting plate and the bottom connecting plate; the lead screw pull rod mechanism comprises a handle, a lead screw, a connecting rod and a bayonet; the top of the lead screw is connected to the handle, the lead screw passes through the front connecting plate and is connected via a thread, the bottom of the lead screw is connected to the connecting rod, a bayonet is provided on the connecting rod connection, and the bayonet is connected to the lifting ear on the upper end surface of the intercooler; the lateral connecting plate and the bottom connecting plate are provided with an auxiliary roller structure.

[0006] Furthermore, four auxiliary roller structures are respectively provided on the lateral connecting plate and the bottom connecting plate.

[0007] Furthermore, the auxiliary roller structure includes an adjustment screw, an adjustment frame, a roller support and a roller; the roller support is installed on the adjustment frame, and the roller is installed on the roller support, and the height of the roller support can be adjusted by adjusting the adjustment screw.

[0008] The beneficial effects of the present invention are:

[0009] The present invention has a simple structure and is easy to install. It is suitable for operation in a narrow space, reduces the difficulty of disassembling and assembling the intercooler, and reduces the damage to the end surface of the intercooler. The disassembly tool adopts a screw pull rod mechanism, and auxiliary rollers are respectively installed on the lateral connecting plate and the bottom connecting plate, and the auxiliary rollers can adjust the corresponding heights. The combination of the screw pull rod mechanism and the auxiliary rollers facilitates the disassembly and assembly of the intercooler. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is the general arrangement diagram of the present invention;

[0011] Figure 2 It is a cross-sectional schematic diagram of the installation of the intermediate heat exchanger and the casing of the present invention;

[0012] Figure 3 This is a schematic diagram of the installation of the intercooler disassembly tool of the present invention;

[0013] Figure 4 A schematic diagram of the intercooler disassembly tooling structure of the present invention;

[0014] Figure 5 This is a schematic diagram of the auxiliary roller structure of the intercooler disassembly tooling of the present invention;

[0015] Figure 6 This is a schematic diagram of the structure of the screw and rod mechanism of the intercooler disassembly tooling of the present invention. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with the accompanying drawings.

[0017] like Figures 1-2 As shown, the intercooler 2 is distributed circumferentially, and the single-module intercooler is axially installed in the intercooler casing 3.

[0018] like Figures 4 to 6As shown, an intercooler disassembly tool for an intercooled cycle gas turbine, the intercooler disassembly tool structure 1 includes a front connecting plate 1-1, a rear connecting plate 1-2, a lateral connecting plate 1-3, a bottom connecting plate 1-4, a screw rod mechanism 1-5 and an auxiliary roller structure 1-6; the front connecting plate 1-1 and the rear connecting plate 1-2 are connected by the lateral connecting plate 1-3 and the bottom connecting plate 1-4; the screw rod mechanism 1-5 includes a handle 1-5-1, a screw 1-5-2, Connecting rod 1-5-3 and bayonet 1-5-4; the top of the screw 1-5-2 is connected to the handle 1-5-1, the screw 1-5-2 passes through the front connecting plate 1-1 and is connected by threads, the bottom of the screw 1-5-2 is connected to the connecting rod 1-5-3, and the connecting rod 1-5-3 is connected with a bayonet 1-5-4, and the bayonet 1-5-4 is connected to the ear on the upper end face of the intercooler 2; an auxiliary roller structure 1-6 is provided on the lateral connecting plate 1-3 and the bottom connecting plate 1-4.

[0019] Remove the connecting screws between the intercooler 2 and the intercoolers on its two adjacent sides and the intercooler casing 3.

[0020] like Figure 3 As shown, the rear connecting plate 1 - 2 and the intercooler casing 3 are fixed by means of connecting flanges between two adjacent intercoolers and casings.

[0021] Four auxiliary roller structures 1-6 are respectively provided on the lateral connecting plate 1-3 and the bottom connecting plate 1-4. The auxiliary roller structure 1-6 includes an adjusting screw 1-6-1, an adjusting frame 1-6-2, a roller support 1-6-3 and a roller 1-6-4; the roller support 1-6-3 is installed on the adjusting frame 1-6-2, and the roller 1-6-4 is installed on the roller support 1-6-3. The height of the roller support 1-6-3 can be adjusted by adjusting the adjusting screw 1-6-1.

[0022] When the intercooler 2 passes over the first set of auxiliary rollers, adjust the four auxiliary roller structures 1-6 installed on the lateral connecting plate 1-3 and the bottom connecting plate 1-4, adjust the adjusting screw 1-6-1, and raise the roller support 1-6-3 and the roller 1-6-4 so that the roller 1-6-4 fully contacts the end face of the intercooler 2 to ensure that the intercooler can slide on the rollers.

[0023] When the intercooler passes over the second set of auxiliary rollers, follow the above steps to adjust the four auxiliary roller structures 1-6 installed on the lateral connecting plate 1-3 and the bottom connecting plate 1-4, adjust the adjustment screw 1-6-1, and raise the roller support 1-6-3 and the roller 1-6-4 so that the roller 1-6-4 fully contacts the end surface of the intercooler 2 to ensure that the intercooler can slide on the rollers. The eight rollers can work at the same time to ensure that the intercooler can be pulled out smoothly.

[0024] Rotate the screw pull rod mechanism 1-5 until the intercooler 2 can completely fall into the frame of the intercooler disassembly tool 1, and use the bench lifting tool to lift the replaced intercooler 2 away from the unit. When installing a new intercooler 2, the installation steps are carried out in the reverse direction of the above-mentioned disassembly steps.

[0025] The working process of the present invention is described in detail below:

[0026] When it is necessary to replace a faulty intercooler, first remove the intermediate inlet and outlet water pipes, installation supports and other related equipment that affect disassembly and assembly; install a hoist on the upper part of the gas turbine to facilitate the subsequent transfer of the replacement intercooler away from the site; when replacing the replacement intercooler, first remove the connecting screws between the replacement intercooler and the intercoolers on its two adjacent sides and the casing, and use the connecting flanges of the two adjacent intercoolers and the casing to fix the rear connecting plate of the disassembly tooling to the casing, and connect the screw pull rod mechanism to the lifting lugs on the end face of the intercooler; after the preparatory work, turn the screw pull rod mechanism to pull out the replacement intercooler axially, and at the same time adjust the roller height of the lateral connecting plate and the bottom connecting plate to ensure that the intercooler can fall completely into the frame of the tooling to reduce the resistance when the intercooler is pulled out; when the replacement intercooler has completely fallen into the replacement tooling, use a sling to lift the replacement intercooler out.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A disassembly tool for an intercooler of an intercooled cycle gas turbine, characterized in that: The invention comprises a front connecting plate (1-1), a rear connecting plate (1-2), a lateral connecting plate (1-3), a bottom connecting plate (1-4), a lead screw pull rod mechanism (1-5) and an auxiliary roller structure (1-6); the front connecting plate (1-1) and the rear connecting plate (1-2) are connected via the lateral connecting plate (1-3) and the bottom connecting plate (1-4); the lead screw pull rod mechanism (1-5) comprises a handle (1-5-1), a lead screw (1-5-2), a connecting rod (1-5-3) and a bayonet (1-5-4) The top of the lead screw (1-5-2) is connected to the handle (1-5-1), the lead screw (1-5-2) passes through the front connecting plate (1-1) and is connected by a thread, the bottom of the lead screw (1-5-2) is connected to the connecting rod (1-5-3), the connecting rod (1-5-3) is provided with a bayonet (1-5-4), and the bayonet (1-5-4) is connected to the ear on the upper end surface of the intercooler (2); the lateral connecting plate (1-3) and the bottom connecting plate (1-4) are provided with an auxiliary roller structure (1-6).

2. The intercooler disassembly tool for an intercooled cycle gas turbine according to claim 1, characterized in that: Four auxiliary roller structures (1-6) are respectively provided on the lateral connecting plate (1-3) and the bottom connecting plate (1-4).

3. The intercooler disassembly tool for an intercooled cycle gas turbine according to claim 2, characterized in that: The auxiliary roller structure (1-6) comprises an adjustment screw (1-6-1), an adjustment frame (1-6-2), a roller support (1-6-3) and a roller (1-6-4); the roller support (1-6-3) is mounted on the adjustment frame (1-6-2), the roller (1-6-4) is mounted on the roller support (1-6-3), and the height of the roller support (1-6-3) is adjusted by adjusting the adjustment screw (1-6-1).

Images