Complete equipment of 10MWCO2 waste heat power generation turbine compressor for offshore platform

Abstract

The invention discloses 10MWCO2 waste heat power generation turbine compressor complete equipment for an offshore platform, and belongs to the technical field of offshore oil and gas platform energy equipment. The technical problems that existing offshore platform 10MWCO2 waste heat power generation turbine compressor complete equipment is insufficient in degree of integration and modularization, and overall transportation and installation are not convenient are solved. Comprising a turbine assembly, a compressor assembly, a power transmission and sealing assembly and an auxiliary system assembly which are integrally installed on a skid-mounted base. The turbine assembly at least comprises a turbine volute and a turbine impeller. The compressor assembly at least comprises a compressor volute and a compressor impeller. The power transmission and sealing assembly at least comprises a gear box used for connecting and driving the turbine impeller and the compressor impeller, and a dry gas seal used for sealing the rotating shaft; the auxiliary system assembly at least comprises a sealing control system for providing support for the power transmission and sealing assembly, a power motor and a lubricating system. The design is compact, and offshore space limitation is adapted. The invention is used for the offshore oil-gas platform.

Description

TECHNICAL FIELD

[0001] The application relates to a 10MW CO2 waste heat power generation turbine compressor complete equipment for offshore platforms, and belongs to the technical field of energy equipment for offshore oil and gas platforms. BACKGROUND

[0002] In special environments such as offshore oil and gas exploitation platforms, the high-temperature flue gas waste heat generated by platform gas turbines or processes is used to drive CO2 turbine power generation, and the CO2 medium after work is re-compressed for reuse, which has significant energy saving and economic benefits. With the increasing emphasis on clean energy and energy saving and emission reduction worldwide, the market demand for offshore platform carbon dioxide waste heat power generation turbine technology will continue to expand.

[0003] When such technology is applied to offshore platforms, the traditional land-based power plant design is loosely laid out. Due to the large number of equipment and large area occupied, it cannot be directly adapted to the deck space of the offshore platform. The offshore lifting, positioning and connection of large-scale non-standard equipment are difficult, high-risk and long-cycle, which greatly increases the investment and time cost of platform modification or new project. The existing system components, such as turbines, compressors, gearboxes, sealing systems, control systems and lubrication systems, are usually scattered, connected by field pipelines, and have low system integration. Not only does it occupy more space, but it also makes daily inspection and fault maintenance extremely inconvenient.

[0004] In summary, the existing CO2 waste heat power generation turbine compressor complete equipment for offshore platforms has the technical problems of insufficient degree integration and modularization, which is not convenient for overall transportation and installation. In order to meet the needs of specific environments and requirements, it is urgent to develop a 10MW CO2 waste heat power generation turbine and compressor suitable for offshore platforms. SUMMARY

[0005] The application is to solve the technical problems of insufficient degree integration and modularization of the existing CO2 waste heat power generation turbine compressor complete equipment for offshore platforms, which is not convenient for overall transportation and installation. Therefore, a 10MW CO2 waste heat power generation turbine compressor complete equipment for offshore platforms is provided, which comprises a turbine assembly, a compressor assembly, a power transmission and sealing assembly, an auxiliary system assembly and a skid-mounted base.

[0006] The turbine assembly at least comprises a turbine volute and a turbine impeller;

[0007] The compressor assembly at least comprises a compressor volute and a compressor impeller;

[0008] The power transmission and sealing assembly at least comprises a gear box for connecting and driving the turbine impeller and the compressor impeller, and a dry gas seal for sealing the rotating shaft;

[0009] The auxiliary system assembly at least comprises a seal control system, a power motor and a lubrication system for supporting the power transmission and seal assembly;

[0010] The turbine assembly, the compressor assembly, the power transmission and seal assembly and the auxiliary system assembly are integrally installed on the skid base.

[0011] As another improvement of the present application, the turbine assembly further comprises a turbine casing, and the turbine wheel is arranged in the turbine casing; the compressor assembly further comprises a compressor casing, and the compressor wheel is arranged in the compressor casing.

[0012] As another improvement of the present application, the gear box is provided with a main shaft; the turbine casing and the compressor casing are respectively connected to two ends of the gear box through flanges; the main shaft passes through shaft ends of the turbine casing and the compressor casing in sequence and is respectively in driving connection with the turbine wheel and the compressor wheel.

[0013] As another improvement of the present application, the dry gas seal in the power transmission and seal assembly is arranged at the shaft end of the turbine casing and the compressor casing for sealing the main shaft.

[0014] As another improvement of the present application, the auxiliary system assembly comprises:

[0015] a dry gas seal control system connected with the dry gas seal;

[0016] a motor connected with an input shaft of the gear box;

[0017] an oil station for providing lubrication for the gear box and / or the motor.

[0018] As another improvement of the present application, the dry gas seal control system comprises a seal gas recovery device.

[0019] As another improvement of the present application, the motor is a start-generating integrated machine.

[0020] As another improvement of the present application, on the skid base, the oil station is arranged below the gear box and the motor; the dry gas seal control system is vertically arranged at the side of the skid base.

[0021] As another improvement of the present application, the overall size is as follows: 8 meters in length, 3.7 meters in width and 4.2 meters in height.

[0022] As another improvement of the present application, it further comprises a pipeline valve system connected with an air inlet end of the turbine assembly and an air outlet end of the compressor assembly, and the pipeline valve system comprises one or more of an inlet regulating valve, a check valve, a safety valve and a vent valve.

[0023] The beneficial effects of the present application are:

[0024] 1. Compact design, suitable for offshore space constraints: Through thorough modularization and integration design, the turbine, compressor, gear box, sealing system, control system, lubrication system, etc. are highly integrated in an 8m x 3.7m x 4.2m skid module, saving the offshore platform deck area and solving the core contradiction of the scarcity of offshore platform space.

[0025] 2. Easy transportation and rapid deployment: The equipment completes all factory assembly, testing and debugging on land, and is transported to the offshore platform in the form of a skid module, which can realize "ready-to-use" rapid hoisting and docking, significantly shorten the offshore construction period, and reduce installation cost and operation risk.

[0026] 3. Reliable sealing, safe and environmentally friendly: The high-efficiency dry gas sealing technology is adopted to effectively solve the leakage problem of high-speed, high-pressure CO2 rotating shaft end. The matching sealing gas recovery device further recovers and utilizes the sealing gas, maximally reduces the working medium loss, and improves the economic efficiency of system operation. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a partial sectional view of a kind of offshore platform 10MW CO2 waste heat power generation turbine compressor complete equipment of the present application.

[0028] Figure 2 is a structural arrangement schematic view of a kind of offshore platform 10MW CO2 waste heat power generation turbine compressor complete equipment of the present application. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings in the examples of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments. Based on the embodiments of the present application, all embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0030] Specific implementation method one: combined with Figure 1 and Figure 2 to illustrate the present embodiment, the present embodiment is a kind of offshore platform 10MW CO2 waste heat power generation turbine compressor complete equipment, it includes turbine assembly, compressor assembly, power transmission and sealing assembly, auxiliary system assembly and skid base 12;

[0031] The turbine assembly at least includes turbine volute 3 and turbine impeller 7;

[0032] The compressor assembly at least includes compressor volute 4 and compressor impeller 8;

[0033] The power transmission and sealing assembly at least comprises a gear box 1 for connecting and driving the turbine impeller 7 and the compressor impeller 8, and a dry gas seal 2 for sealing the rotating shaft;

[0034] The auxiliary system assembly at least comprises a sealing control system, a power motor and a lubrication system for supporting the power transmission and sealing assembly;

[0035] The turbine assembly, the compressor assembly, the power transmission and sealing assembly and the auxiliary system assembly are all integrally installed on the skid base 12.

[0036] The embodiment is compact and suitable for offshore space limitation: through the thorough modularization and integration design, the turbine, the compressor, the gear box, the sealing system, the control system, the lubrication system and the like are integrated in the skid module, the offshore platform deck occupation area is saved, and the core contradiction of the offshore platform space shortage is solved. Facilitating transportation and rapid deployment: the equipment completes all factory assembly, testing and debugging on land, is transported to the offshore platform in the form of the skid module, realizes the rapid hoisting and docking of “just-in-time”, significantly shortens the offshore construction period, reduces the installation cost and operation risk. Reliable sealing, safe and environmentally friendly: the high-efficiency dry gas sealing technology is adopted, the leakage problem of the high-speed and high-pressure CO2 rotating shaft end is effectively solved. The matched sealing gas recovery device further recovers and utilizes the sealing gas, maximally reduces the working medium loss, and improves the economy of system operation.

[0037] Specific embodiment two: combining Figure 1 and Figure 2 The embodiment is described, and the difference between the embodiment and the specific embodiment one is that the turbine assembly further comprises a turbine casing 5, and the turbine impeller 7 is arranged in the turbine casing 5; the compressor assembly further comprises a compressor casing 6, and the compressor impeller 8 is arranged in the compressor casing 6. The other components and connection modes are the same as those of the specific embodiment one.

[0038] Specific embodiment three: combining Figure 1 and Figure 2 The embodiment is described, and the difference between the embodiment and the specific embodiment one is that the gear box 1 is provided with a main shaft; the turbine casing 5 and the compressor casing 6 are respectively connected to two ends of the gear box 1 through flanges; and the main shaft sequentially penetrates the shaft ends of the turbine casing 5 and the compressor casing 6, and is respectively in transmission connection with the turbine impeller 7 and the compressor impeller 8. Such design has high integration degree and meets the offshore space limitation. The other components and connection modes are the same as those of the specific embodiment one or two.

[0039] Specific embodiment four: combining Figure 1 and Figure 2The difference between the present embodiment and the first embodiment is that the dry gas seal 2 in the power transmission and sealing assembly is arranged at the shaft end of the turbine casing 5 and the compressor casing 6 for sealing the main shaft. The other components and connection modes are the same as any one of the first to third embodiments.

[0040] The fifth embodiment is a combination of the first embodiment and Figure 1 and Figure 2 The difference between the present embodiment and the first embodiment is that the auxiliary system assembly comprises a dry gas seal control system 9 connected with the dry gas seal 2, a motor 10 connected with the input shaft of the gear box 1, and an oil station 11 for providing lubrication for the gear box 1 and / or the motor 10. The other components and connection modes are the same as any one of the first to fourth embodiments.

[0041] The sixth embodiment is a combination of the first embodiment and Figure 1 and Figure 2 The difference between the present embodiment and the first embodiment is that the dry gas seal control system 9 comprises a seal gas recovery device. The seal gas recovery device improves the economy and environmental protection of the system. The other components and connection modes are the same as any one of the first to fifth embodiments.

[0042] The seventh embodiment is a combination of the first embodiment and Figure 1 and Figure 2 The difference between the present embodiment and the first embodiment is that the motor 10 is a start-generator integrated machine. The other components and connection modes are the same as any one of the first to sixth embodiments.

[0043] The eighth embodiment is a combination of the first embodiment and Figure 1 and Figure 2 The difference between the present embodiment and the first embodiment is that the oil station 11 is arranged below the gear box 1 and the motor 10 on the skid base 12, and the dry gas seal control system 9 is vertically arranged at the side of the skid base 12. In this way, the layout is reasonable and compact. The other components and connection modes are the same as any one of the first to seventh embodiments.

[0044] The ninth embodiment is a combination of the first embodiment and Figure 1 and Figure 2 The difference between the present embodiment and the first embodiment is that the overall size of the offshore platform 10 MW CO2 waste heat power generation turbine compressor complete equipment of the present embodiment is as follows: 8 meters in length, 3.7 meters in width, and 4.2 meters in height. The other components and connection modes are the same as any one of the first to eighth embodiments.

[0045] The tenth embodiment is a combination of the first embodiment and Figure 1 and Figure 2The embodiment is different from the first embodiment in that the embodiment further comprises a pipeline valve system connected to the gas inlet end of the turbine assembly and the gas outlet end of the compressor assembly, and the pipeline valve system comprises one or more of an inlet regulating valve, a check valve, a safety valve and a vent valve. The other components and connection modes are the same as those of any one of the first to ninth embodiments.

[0046] The present application integrates various devices into a highly modularized skid-mounted structure, which mainly comprises the following functional assemblies: a turbine assembly for realizing CO2 expansion work, a compressor assembly for realizing CO2 compression, a power transmission and sealing assembly for realizing power transmission and shaft end sealing, an auxiliary system assembly for ensuring system operation, and a skid-mounted base for integrating and carrying all the above assemblies. The assemblies are intensively arranged on the skid-mounted base to form a complete skid-mounted module that can be integrally hoisted and transported and meets the space limitation and transportation and installation requirements of offshore platforms. After application, each offshore platform can save fuel costs of tens of millions of yuan per year, and reduce the price fluctuation risk caused by energy procurement.

[0047] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A complete set of equipment for a 10MW CO2 waste heat power generation turbine compressor on an offshore platform, characterized in that... It includes turbine components, compressor components, power transmission and sealing components, auxiliary system components, and skid-mounted base (12). The turbine assembly includes at least a turbine volute (3) and a turbine impeller (7); The compressor assembly includes at least a compressor volute (4) and a compressor impeller (8); The power transmission and sealing assembly includes at least a gearbox (1) for connecting and driving the turbine impeller (7) and the compressor impeller (8), and a dry gas seal (2) for sealing the rotating shaft. The auxiliary system components include at least a sealing control system, a power motor, and a lubrication system that provide support for the power transmission and sealing components; Turbine components, compressor components, power transmission and sealing components, and auxiliary system components are all integrated and installed on a skid-mounted base (12).

2. A complete set of equipment for a 10MW CO2 waste heat power generation turbine compressor on an offshore platform according to claim 1, characterized in that, The turbine assembly further includes a turbine casing (5), in which the turbine impeller (7) is disposed; the compressor assembly further includes a compressor casing (6), in which the compressor impeller (8) is disposed.

3. A complete set of equipment for a 10MW CO2 waste heat power generation turbine compressor on an offshore platform according to claim 1, characterized in that, The gearbox (1) is provided with a main shaft; the turbine casing (5) and the compressor casing (6) are respectively connected to the two ends of the gearbox (1) through flanges; the main shaft passes through the shaft ends of the turbine casing (5) and the compressor casing (6) in sequence, and is connected to the turbine impeller (7) and the compressor impeller (8) respectively.

4. A complete set of equipment for a 10MW CO2 waste heat power generation turbine compressor on an offshore platform according to claim 3, characterized in that, The dry gas seal (2) in the power transmission and sealing assembly is provided at the shaft end of the turbine casing (5) and the compressor casing (6) for sealing the main shaft.

5. A complete set of equipment for a 10MW CO2 waste heat power generation turbine compressor on an offshore platform according to claim 1, characterized in that, The auxiliary system components include: A dry gas seal control system (9) is connected to the dry gas seal (2); The motor (10) is connected to the input shaft of the gearbox (1); An oil station (11) is used to provide lubrication for the gearbox (1) and / or the motor (10).

6. A complete set of equipment for a 10MW CO2 waste heat power generation turbine compressor on an offshore platform according to claim 5, characterized in that, The dry gas sealing control system (9) includes a sealing gas recovery device.

7. A complete set of equipment for a 10MW CO2 waste heat power generation turbine compressor on an offshore platform according to claim 5, characterized in that, The motor (10) is a starter-generator integrated machine.

8. A complete set of equipment for a 10MW CO2 waste heat power generation turbine compressor on an offshore platform according to claim 5, characterized in that, On the skid-mounted base (12), the oil station (11) is arranged below the gearbox (1) and the motor (10); the dry gas seal control system (9) is arranged vertically on the side of the skid-mounted base (12).

9. A complete set of equipment for a 10MW CO2 waste heat power generation turbine compressor for an offshore platform according to claim 1, characterized in that... Its overall dimensions are as follows: 8 meters long, 3.7 meters wide, and 4.2 meters high.

10. A complete set of equipment for a 10MW CO2 waste heat power generation turbine compressor for an offshore platform according to claim 1, characterized in that... It also includes a piping valve system connected to the inlet of the turbine assembly and the outlet of the compressor assembly, the piping valve system including one or more of an inlet regulating valve, a check valve, a safety valve, and a vent valve.

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