Integral sliding installation method for gas turbine generator set in limited space

Abstract

The invention aims to provide an integral sliding installation method for a gas turbine generator set in a limited space, and belongs to the field of gas turbine generator sets. A traditional generator set is installed in the steps that all parts are installed in a split hoisting mode, and after installation is completed, a plant roof or an upper deck of a platform module is installed. The invention designs a method for integrally sliding and installing a gas turbine generator set in a limited space in consideration of a new situation that a plant roof or an upper deck of a platform module has been installed and the space is narrow and limited. According to the method, the overall installation scheme and steps are optimized, the gas turbine generator set is not used as an installation node restricting factor of an overall plant or a module, and the gas turbine generator set can be used as a whole to be subjected to overall sliding positioning in a limited space, so that the engineering construction period is shortened, and the installation efficiency is improved.

Description

Technical Field

[0001] The invention relates to a gas turbine installation method, in particular to a gas turbine generator set installation method. Background Art

[0002] At present, my country's gas turbine generator sets are increasingly used in land power generation and offshore platform power generation, providing power guarantee for land power generation and offshore oil field facilities. Generally, the space for installing gas turbine generator sets is narrow and limited, the surrounding pipeline facilities are compactly arranged, and the upper part is mostly the roof of the plant or the upper deck. Usually, the traditional installation steps are to place the basic chassis of the unit in place, and install the upper equipment one by one. Only after the installation is completed can the upper plant roof, deck and surrounding facilities be installed. The capacity of the crane in the plant is generally within 50T, which cannot meet the overall lifting of equipment above 200T. If the gas turbine generator set arrives late, it will be impossible to carry out the roof or deck installation work in advance, which will affect the overall installation construction progress. Summary of the invention

[0003] The object of the present invention is to provide a method for integral sliding installation of a gas turbine generator set in a confined space, which can eliminate the gas turbine generator set as an installation node constraint factor of an overall plant or module.

[0004] The object of the present invention is achieved in that:

[0005] The present invention provides a method for integral sliding installation of a gas turbine generator set in a confined space, which is characterized by comprising the following steps:

[0006] (1) Assemble the gas turbine generator set into an integral structure in an open area on land, and use directional sliding steel wheel structure to connect and fix it with the integral steel structure frame with bolts;

[0007] (2) According to the conditions of the crane or truck crane at the construction site, formulate a lifting plan and optimize the positioning plan of the gas turbine generator set to the steel structure guide rail for overall sliding;

[0008] (3) Determine the positioning method of the sliding steel structure guide rail and the ground foundation, lay all the sliding steel structure guide rails on the ground inside and outside the factory, and use high-strength bolts to splice and install them after straightening and leveling;

[0009] (4) Lift the gas turbine generator set as a whole onto the steel structure guide rail, install the front traction electric guide chain and the left and right adjustment guide chains, and adjust the overall sliding direction;

[0010] (5) Start the electric guide chain to slide the unit to the predetermined installation position, and set a limit block at the final installation position for positioning;

[0011] (6) Align and level the generator set equipment according to the positioning drawings.

[0012] The present invention may also include:

[0013] 1. The gas turbine generator set assembled into an integral structure includes a gas turbine, a gas turbine chassis, an integral steel structure chassis, a generator, and upper air intake and exhaust ventilation ducts.

[0014] 2. The directional sliding steel wheel structure includes a load-bearing plate and rollers. The overall sliding steel structure guide rail has a concave slideway. The rollers of the directional sliding steel wheel structure are installed in the concave slideway and adopt a multi-wheel group design: 4 are arranged on both sides of the base frame.

[0015] 3. The overall steel structure chassis is provided with jacking points, traction points and installation holes for directional sliding steel wheel structures for overall sliding.

[0016] 4. The lifting scheme described in step (2) adopts the lifting scheme of double hook lifting by crane for lifting.

[0017] 5. The method of installing the front traction electric guide chain and the left and right adjustment guide chains in step (4) is: pre-traction of the electric guide chain, checking the sliding direction, and adjusting the direction by the guide chains installed on the left and right sides of the chassis.

[0018] 6. The starting electric guide chain described in step (5) slides the unit to the predetermined installation position, welds a limit stopper at the preset landing point of the unit, and removes it after the landing is completed.

[0019] 7. In step (6), the generator set equipment is aligned and leveled as a whole according to the positioning drawing. The method is as follows: the unit is lifted as a whole by using the preset jack position, and the directional sliding steel wheel structure is removed. At the same time, the left and right positions of the unit are fine-tuned by the left and right pulling guide chains, and finally the unit is fixed in place as a whole by using the jack.

[0020] The advantages of the present invention are: the present invention optimizes the overall installation scheme and steps, does not regard the gas turbine generator set as a constraint factor for the installation node of the overall plant or module, and can realize the overall sliding positioning of the gas turbine generator set as a whole in a confined space, so as to shorten the construction period and improve the installation efficiency. The present invention fully considers the requirements of economy and safety, and has certain versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall sliding installation of the gas turbine generator set;

[0022] Figure 2 It is a top view of the overall sliding installation of the gas turbine generator set;

[0023] Figure 3 It is a schematic diagram of the structure of the directional sliding steel wheel;

[0024] Figure 4 It is a schematic diagram of the side view structure of the directional sliding steel wheel.

[0025] The accompanying drawings in the figure are as follows: gas turbine and gas turbine chassis 1, integral steel structure chassis 2, generator 3, air inlet and exhaust ducts 4, directional sliding steel wheel structure 5, electric guide chain 6, auxiliary guide chain 7, integral sliding steel structure guide rail structure 8, plant module structure 9, limit block 10, jack position 11, load-bearing plate 12, roller 13, walkway and temporary guardrail 14. DETAILED DESCRIPTION

[0026] The present invention is described in more detail below with reference to the accompanying drawings:

[0027] Combination Figure 1-4 This embodiment includes a gas turbine and a gas turbine housing 1, an integral steel structure frame 2, a generator 3, an air inlet and exhaust duct 4, a directional sliding steel wheel structure 5, an electric guide chain 6, an auxiliary guide chain 7, an integral sliding steel structure guide rail structure 8, a plant module structure 9, a walkway and a temporary guardrail 14.

[0028] Step 1: In an open area on land, place the gas turbine and gas turbine housing 1, the integral steel structure chassis 2, the generator 3, the air intake and exhaust ducts 4, and the pre-designed directional sliding steel wheel structure 5. Calculate whether the installation of the upper air intake and exhaust ducts affects the overall lifting according to the center of gravity of the structure. Assemble them into an integral structure, and use the directional sliding steel wheel structure to connect and fix it with the integral steel structure chassis with bolts. Calculate whether the installation of the upper air intake and exhaust ducts affects the overall lifting according to the center of gravity of the structure.

[0029] See also Figure 3 and Figure 4 The directional sliding steel wheel structure 5 includes: a load-bearing plate 12, a roller 13, and an integral sliding steel structure guide rail 8 having a concave slideway, in which the roller 13 is movably arranged, and a multi-wheel group design is adopted, with 4 arranged on each side of the chassis, for a total of 8.

[0030] See also Figure 1 and Figure 2 The overall steel structure chassis is equipped with 8 jacking points for overall sliding, 3 traction points, and 8 directional sliding steel wheel structure installation holes.

[0031] Step 2: According to the conditions of the crane or truck crane at the construction site, formulate a lifting plan to optimize the positioning of the gas turbine generator set to the overall sliding steel structure guide rail 8. The lifting plan can be carried out by using a double-hook crane to adjust the center of gravity.

[0032] Step 3: Determine the positioning method of the sliding steel structure guide rail and the ground foundation, lay multiple sliding steel structure guide rails 8 on the ground inside and outside the factory, and use high-strength bolts to splice and install them after straightening and leveling. Figure 1 As shown, the steel structure guide rail 8 is designed with a walkway and a temporary guardrail 14 to prevent personnel from accidentally falling during operation on the guide rail. The overall guide rail height is adjusted by gaskets during the guide rail splicing process.

[0033] Step 4: hoist the gas turbine generator set as a whole onto the steel structure guide rails, and install the front traction electric guide chain and the left and right adjustment guide chains. Figure 2 As shown in the figure, after the unit is in place, the electric guide chain 6 is pre-pulled to check the sliding direction. The construction personnel adjust the direction through the auxiliary guide chains 7 installed on the left and right sides of the chassis. Figure 2 As shown, a limit stopper 10 is welded at a preset landing position of the unit and is removed after the landing is completed.

[0034] Step 5: Start the electric guide chain 6 to slowly and evenly slide the unit to the predetermined installation position, and set the limit block 10 at the final installation position for limiting. The electric guide chain 6 has a controllable speed and slides the unit to the predetermined position at a constant and stable speed.

[0035] Step 6: According to the positioning drawing, the unit is lifted as a whole through the preset jack position 11, and the directional sliding steel wheel structure 5, the limit stopper 10, and the steel structure guide rail 8 are removed. At the same time, the left and right positions of the unit are fine-tuned through the left and right traction guide chains 7, and finally the unit is fixed in place as a whole through the jack.

Claims

1. A method for integral sliding installation of a gas turbine generator set in a confined space, characterized in that: The steps include: (1) Assemble the gas turbine generator set into an integral structure in an open area on land, and use directional sliding steel wheel structure to connect and fix it with the integral steel structure frame with bolts; (2) According to the conditions of the crane or truck crane at the construction site, formulate a lifting plan and optimize the positioning plan of the gas turbine generator set to the steel structure guide rail for overall sliding; (3) Determine the positioning method of the sliding steel structure guide rail and the ground foundation, lay all the sliding steel structure guide rails on the ground inside and outside the factory, and use high-strength bolts to splice and install them after straightening and leveling; (4) Lift the gas turbine generator set as a whole onto the steel structure guide rail, install the front traction electric guide chain and the left and right adjustment guide chains, and adjust the overall sliding direction; (5) Start the electric guide chain to slide the unit to the predetermined installation position, and set a limit block at the final installation position for positioning; (6) Align and level the generator set equipment according to the positioning drawings.

2. The method for integral sliding installation of a gas turbine generator set in a confined space according to claim 1 is characterized by: The gas turbine generator set assembled into an integral structure includes a gas turbine, a gas turbine chassis, an integral steel structure chassis, a generator, and upper air intake and exhaust ventilation ducts.

3. The method for integral sliding installation of a gas turbine generator set in a confined space according to claim 1 is characterized by: The directional sliding steel wheel structure comprises a load-bearing plate and rollers. The overall sliding steel structure guide rail has a concave slideway. The rollers of the directional sliding steel wheel structure are installed in the concave slideway and adopt a multi-wheel group design: 4 are arranged on both sides of the base frame.

4. The method for integral sliding installation of a gas turbine generator set in a confined space according to claim 1 is characterized by: The integral steel structure chassis is provided with jacking points, traction points and installation holes for the directional sliding steel wheel structure for integral sliding.

5. The method for integral sliding installation of a gas turbine generator set in a confined space according to claim 1 is characterized by: The lifting scheme described in step (2) adopts the lifting scheme of double hook lifting by crane for lifting.

6. The method for integral sliding installation of a gas turbine generator set in a confined space according to claim 1, characterized in that: The method for installing the front traction electric guide chain and the left and right adjustment guide chains in step (4) is: pre-traction of the electric guide chain, checking the sliding direction, and adjusting the direction by the guide chains installed on the left and right sides of the chassis.

7. The method for integral sliding installation of a gas turbine generator set in a confined space according to claim 1, characterized in that: The starting electric guide chain described in step (5) slides the unit to a predetermined installation position, welds a limit stopper at a preset landing point of the unit, and removes it after landing.

8. The method for integral sliding installation of a gas turbine generator set in a confined space according to claim 1 is characterized by: The method of aligning and leveling the generator set equipment according to the positioning drawing in step (6) is as follows: the unit is lifted as a whole by using the preset jack position, and the directional sliding steel wheel structure is removed, and the left and right positions of the unit are fine-tuned by the left and right pulling guide chains, and finally the unit is fixed in place as a whole by using the jack.

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