Temporary jacking oil system for steam turbine installation

Abstract

A temporary jacking oil system for steam turbine installation belongs to the technical field of steam turbines and comprises an oil supply system, an oil collection pool and a distributor, the oil supply system comprises a main oil tank with a breathing opening and an oil drum, a pipeline A is connected between the oil drum and the main oil tank, an oil filter A and a control valve are arranged in the pipeline A, and a pipeline B is arranged between the main oil tank and the distributor. A one-way valve, a jacking oil pump and an air cooler body are arranged in the pipeline B. The multiple oil discharge ends of the distributor are each provided with a pipeline C, the other end, away from the distributor, of each pipeline C is arranged at the jacking oil supply position, and a control valve is arranged in each pipeline C. An oil collecting tank is fixedly installed at the bottom of the oil collecting pool and communicates with the oil collecting pool. A plurality of oil inlet ends of the oil collecting tank are respectively provided with a pipeline E. A pipeline F is arranged between the oil collecting tank and the main oil tank, and an oil filter B and a control valve are arranged in the pipeline F. The installation period of the turboset can be greatly shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of steam turbines, and in particular relates to a temporary jacking oil system for installing a steam turbine. Background Art

[0002] In the installation of the conventional island steam turbine of the Hualong One Nuclear Power Plant, since the design of the Hualong One Nuclear Power Plant is a semi-underground design, the conventional island plant is mainly composed of -8 meters, 0 meters and 9.5 meters platforms. The layout of the semi-underground structure takes into account the installation of equipment. For example, the weight and size of equipment such as condensers, generator stators, and steam-water separators are heavier and larger than those of conventional thermal power equipment. During the installation of the steam turbine, it is necessary to rotate the steam turbine rotor for data measurement. The rotor of the conventional island steam turbine of nuclear power is large in mass. According to the installation requirements in the manufacturer's manual, top shaft oil needs to be provided when the rotor is rotated.

[0003] The semi-underground plant of Hualong One Nuclear Power Plant has a large negative excavation volume, great difficulty in civil construction, and a long construction period. During construction, the main frame of the steam turbine island and the conventional island plant is constructed first, and the platforms and other auxiliary structures of the conventional island are installed later. In order to ensure the overall progress of the installation, the steam turbine needs to be involved in the construction in advance after the casting of the steam turbine island is completed. However, due to the late delivery time of the civil construction of each platform, the formal jacking oil system could not be installed. For this reason, a temporary jacking oil system based on the installation of the conventional island steam turbine of Hualong One Nuclear Power Plant was developed to replace the positive load system to ensure the overall construction period. Utility Model Content

[0004] The utility model aims to provide a temporary jacking oil system for installing a steam turbine to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A temporary jacking oil system for installing a steam turbine, comprising an oil supply system, an oil collecting tank and a distributor, wherein the oil supply system comprises a main oil tank and an oil barrel of a breathing port, a pipeline A is connected between the oil barrel and the main oil tank, and an oil filter A and a control valve are arranged in the pipeline A;

[0007] A pipeline B is provided between the main oil tank and the distributor, a one-way valve, a top shaft oil pump and an air cooler body are provided in the pipeline B, multiple oil discharge ends of the distributor are provided with pipelines C, the other end of the pipeline C away from the distributor is provided at the corresponding top shaft oil supply place, and a control valve is provided in the pipeline C;

[0008] An oil collecting box is fixedly installed at the bottom of the oil collecting pool, and the oil collecting box is connected to the oil collecting pool. Pipelines E are provided at multiple oil inlet ends of the oil collecting box, and the ends of the pipelines E away from the oil collecting box are provided at corresponding top shaft oil recovery locations. A pipeline F is provided between the oil collecting box and the main oil tank, and an oil filter B and a control valve are provided in the pipeline F.

[0009] In the above technical solution, a pipeline D is provided between the pressure relief end of the distributor and the main oil tank, and a pressure relief valve is provided in the pipeline D;

[0010] In the above technical solution, an overflow port is provided on the right surface of the main oil tank, and a pipeline G is provided between the overflow port and the oil barrel;

[0011] In the above technical solution, a liquid level gauge is fixedly installed on the right side of the main oil tank, and a pipe with a valve is provided between the liquid level gauge and the main oil tank;

[0012] In the above technical solution, a drain pipe with a valve is provided on the left surface of the main oil tank.

[0013] Compared with the prior art, the utility model provides a temporary jacking oil system for steam turbine installation, which has the following beneficial effects:

[0014] The utility model is a practical technical system specially designed for the research of Hualong One nuclear power unit. The system solves the problem of delayed installation of the steam turbine due to the inability to use the top shaft oil, greatly shortens the installation period of the steam turbine unit, and significantly improves the work efficiency in actual use of a certain engineering project. No safety and quality incidents occur, and the construction of the steam turbine is completed 3 months ahead of schedule, saving construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of the structure of a temporary jacking oil system for installing a steam turbine.

[0016] Figure 2 This is a schematic diagram of the main oil tank structure of the utility model.

[0017] Figure 1-2 Among them: 1- oil supply system, 11- main oil tank, 111- breathing port, 112- liquid level gauge, 113- drain pipe with valve, 12- oil drum, 13- oil filter A, 14- one-way valve, 15- top shaft oil pump, 16- air cooler body, 2- oil collecting pool, 21- oil collecting tank, 3- distributor, 31- pressure relief valve, 4- oil filter B. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 2 , the utility model provides a technical solution:

[0020] A temporary jacking oil system for steam turbine installation, comprising an oil supply system 1, an oil collecting pool 2 and a distributor 3, wherein the oil supply system 1 comprises a main oil tank 11 with a breathing port 111 and an oil barrel 12, a pipeline A is connected between the oil barrel 12 and the main oil tank 11, an oil filter A13 and a control valve are arranged in the pipeline A, after the oil filter A13 is started, the jacking oil in the oil barrel 12 can be filtered and then supplied to the main oil tank 11 through the pipeline A for use, and the system is suitable for temporary use in the conventional island steam turbine installation of Hualong One nuclear power plant;

[0021] A pipeline B is arranged between the main oil tank 11 and the distributor 3, and a one-way valve 14, a top shaft oil pump 15 and a hole cooling air body 16 are arranged in the pipeline B. Multiple oil discharge ends of the distributor 3 are arranged with pipelines C. The other end of the pipeline C away from the distributor 3 is arranged at the supply point of the top shaft oil, and a control valve is arranged in the pipeline C. By opening the one-way valve 14 and the control valve of the pipeline C, the top shaft oil pump 15 can be used to supply the top shaft oil in the main oil tank 11 to the distributor 3 through the pipeline B, and each pipeline C can be used to supply the top shaft oil to the corresponding rotor bearing for lubrication.

[0022] It is worth noting that in order to avoid leakage due to excessive oil supply to the rotor bearing, Figure 1 As shown, a pipeline D is provided between the pressure relief end of the distributor 3 and the main oil tank 11, and a pressure relief valve 31 is provided in the pipeline D. When the amount of oil at the rotor bearing is too much, the pressure relief valve 31 automatically opens, and the oil in the distributor 3 can be pushed back to the main oil tank 11 through the pipeline D for reuse under the pressure.

[0023] It should be noted that an oil collecting box 21 is fixedly installed at the bottom of the oil collecting pool 2, and the oil collecting box 21 is connected to the oil collecting pool 2. Multiple oil inlet ends of the oil collecting box 21 are provided with pipelines E. The ends of the pipelines E away from the oil collecting box 21 are arranged at corresponding top shaft oil recovery points. A pipeline F is arranged between the oil collecting box 21 and the main oil tank 11. The pipeline F is provided with an oil filter B4 and a control valve. During actual use, the oil collecting pool 2 is installed below the top shaft oil recovery point to prevent oil leakage at the top shaft oil recovery point, so as to facilitate the recovery of accidentally leaked oil. The normally recovered top shaft oil is recovered into the oil collecting box 21 through the pipeline E, and the accidentally leaked oil is recovered into the oil collecting box 21 through the oil collecting pool 2. After opening the control valve of the pipeline F, the recovered top shaft oil can be filtered through the oil filter B4 and then re-supplied to the main oil tank 11 for use, thereby realizing the recycling of the top shaft oil.

[0024] In addition, in order to prevent overflow and leakage due to excessive oil in the main oil tank 11, an overflow port is required to be set on the right surface of the main oil tank 11, and a pipeline G is set between the overflow port and the oil barrel 12. The oil overflowing from the main oil tank 11 can be returned to the oil barrel for storage through the pipeline G, which is convenient for continued use.

[0025] In addition, in order to facilitate the observation of the oil storage amount of the main oil tank 11 and to facilitate the timely addition of top shaft oil, a liquid level gauge 112 is fixedly installed on the right side of the main oil tank 11, and a valved pipe is arranged between the liquid level gauge 112 and the main oil tank 11. By opening the valve, the oil in the main oil tank 111 can be injected into the liquid level gauge 112, so that the liquid level between the two can be kept in a horizontal position. The liquid level in the main oil tank 11 can be judged by observing the liquid level of the liquid level gauge 112, so as to facilitate the timely addition of top shaft oil. An oil filling port is arranged on the upper surface of the main oil tank 11, and a sealing cover is screwed at the oil filling port. The sealing cover can be opened to fill oil into the oil filling tank 1 from the oil filling port.

[0026] Finally, after long-term use, when the main oil tank 11 is cleaned, in order to facilitate sewage discharge, a valved sewage pipe is provided on the left surface of the main oil tank 11. After the valved sewage pipe is opened, the sewage in the main oil tank 11 can be discharged.

Claims

1. A temporary jacking oil system for installing a steam turbine, comprising an oil supply system (1), an oil collecting tank (2) and a distributor (3), characterized in that: The oil supply system (1) comprises a main oil tank (11) with a breathing port (111) and an oil barrel (12); a pipeline A is connected between the oil barrel (12) and the main oil tank (11); an oil filter A (13) and a control valve are arranged in the pipeline A; A pipeline B is provided between the main oil tank (11) and the distributor (3), a one-way valve (14), a top shaft oil pump (15) and an air cooler body (16) are provided in the pipeline B, multiple oil discharge ends of the distributor (3) are provided with pipelines C, the other end of the pipeline C away from the distributor (3) is provided at a corresponding top shaft oil supply point, and a control valve is provided in the pipeline C; An oil collecting box (21) is fixedly mounted at the bottom of the oil collecting pool (2), and the oil collecting box (21) is in communication with the oil collecting pool (2). Pipelines E are provided at multiple oil inlet ends of the oil collecting box (21), and one end of the pipeline E away from the oil collecting box (21) is provided at a corresponding top shaft oil recovery location. A pipeline F is provided between the oil collecting box (21) and the main oil tank (11), and an oil filter B (4) and a control valve are provided in the pipeline F.

2. A temporary jacking oil system for steam turbine installation according to claim 1, characterized in that: A pipeline D is provided between the pressure relief end of the distributor (3) and the main oil tank (11), and a pressure relief valve (31) is provided in the pipeline D.

3. A temporary jacking oil system for steam turbine installation according to claim 2, characterized in that: An overflow port is provided on the right surface of the main oil tank (11), and a pipeline G is provided between the overflow port and the oil barrel (12).

4. A temporary jacking oil system for steam turbine installation according to claim 1, characterized in that: A liquid level gauge (112) is fixedly installed on the right side of the main oil tank (11), and a pipe with a valve is arranged between the liquid level gauge (112) and the main oil tank (11).

5. A temporary jacking oil system for steam turbine installation according to claim 1, characterized in that: A sewage pipe with a valve is provided on the left surface of the main oil tank (11).

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