Air compression system driven by steam turbine

Abstract

The utility model relates to an air compression system driven by a steam turbine, and belongs to the technical field of air compressors. The compressor unit comprises a base, a compressor installed on the base and a speed reducer connected between the compressor and the turbine unit, an oil discharge pipeline is arranged in the base and comprises a vertical section connected to the bottom of the compressor and an inclined section connected to the vertical section, and the included angle between the vertical section and the inclined section is an obtuse angle. The steam turbine unit and the compressor unit are independently arranged, reutilization of supplied liquid steam is achieved, energy conservation and environmental protection are better achieved, the occupied area of the compressor unit is reduced, the installation space is saved, the oil discharge pipeline is arranged in the base to directly communicate with the compressor, lubricating oil can be completely discharged through the inclined section of the oil discharge pipeline, and the service life of the compressor unit is prolonged. And lubricating oil residues are avoided.

Description

Technical Field

[0001] The utility model relates to an air compression system driven by a steam turbine, belonging to the technical field of air compressors. Background Technique

[0002] With the acceleration of the industrialization process, the demand for centrifugal compressors in various industrial fields is increasing continuously. And with the increasing global attention to environmental protection, centrifugal compressors have been widely used due to their low energy consumption and high efficiency. Among them, in specific industries, compressors driven by steam turbines using industrial steam as the power source have also been applied. However, existing compressor units are usually driven by motors, and the motors and compressors are integrally arranged on the same base. Therefore, the overall structure has a relatively large floor area. Moreover, in order to facilitate the collection of the lubricating oil of the main engine of the compressor, the lubricating oil collection tank is usually arranged inside the base. Therefore, after the motor is removed from the compressor unit, a long coupling shaft is required to connect the steam turbine and the compressor, resulting in poor transmission effect. In addition, the base cannot be moved, making it difficult to clean the lubricating oil in the lubricating oil collection tank completely, which is likely to cause pollution. Content of the Utility Model

[0003] The purpose of the utility model is to provide an air compression system driven by a steam turbine to solve the above problems.

[0004] To achieve the above purpose, the utility model provides the following technical solution: an air compression system driven by a steam turbine, the air compression system comprising:

[0005] A steam turbine unit for providing driving force;

[0006] A compressor unit, including a base, a compressor installed on the base, and a speed reducer connected between the compressor and the steam turbine unit. An oil discharge pipeline is arranged inside the base. The oil discharge pipeline includes a vertical section connected to the bottom of the compressor and an inclined section connected to the vertical section. The included angle between the axial direction of the vertical section and the axial direction of the inclined section is an obtuse angle.

[0007] Further, a connecting flange is arranged at the outlet end of the inclined section and outside the base.

[0008] Further, the value range of the included angle between the axial direction of the inclined section and the axial direction of the vertical section is 90° - 110°.

[0009] Further, the compressor includes a machine head, a primary cooler and a secondary cooler respectively connected to the machine head. The vertical section is connected to the lubricating oil outlet end of the machine head.

[0010] Further, the machine head is arranged at the top of the base, and the primary cooler and the secondary cooler are respectively arranged on both sides of the base.

[0011] Further, an intake guide vane structure for controlling the intake air volume is arranged at the intake end of the machine head.

[0012] Further, the intake guide vane structure includes a ventilation pipeline connected to the intake end of the machine head, intake guide vanes arranged in the intake pipeline, and a drive assembly for driving the intake guide vanes to rotate. The drive assembly drives the intake guide vanes to rotate to control the intake air volume of the intake pipeline.

[0013] Further, the drive assembly includes a drive ring sleeved outside the intake pipeline and a transmission structure connected between the drive ring and the intake guide vanes.

[0014] The beneficial effects of the present utility model are as follows: By independently arranging the steam turbine unit and the compressor unit, the present application realizes the reuse of the supply steam, which is more energy-saving and environmentally friendly, and reduces the floor area of the compressor unit, saving the installation space. And by arranging an oil discharge pipeline in the base to directly communicate with the compressor, the inclined section of the oil discharge pipeline enables the lubricating oil to be discharged cleanly, avoiding the residue of the lubricating oil.

[0015] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly and implement it according to the content of the specification, the following takes the preferred embodiments of the present utility model and combines with the drawings to describe in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a steam turbine-driven air compression system shown in an embodiment of the present application;

[0017] Figure 2 is Figure 1 a schematic structural diagram of the compressor unit in

[0018] Figure 3 is Figure 2 a schematic structural diagram of the base in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following combines with the drawings and embodiments to further describe in detail the specific embodiments of the present utility model. The following embodiments are used to illustrate the present utility model but not to limit the scope of the present utility model.

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "axial direction", "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0021] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0022] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Additionally, in the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium.

[0023] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0024] Please refer to the figure. A steam turbine-driven air compression system (hereinafter referred to as "air compression system") shown in an embodiment of the present application includes a steam turbine unit 1 and a compression unit.

[0025] The steam turbine unit 1 is used to provide driving force. The steam turbine unit 1 is connected to the compressor unit through the coupling 2. When the steam turbine rotates driven by steam and is transmitted to the compressor unit through the coupling 2 to drive the compressor unit to work, an unconventional driving method is selected. In specific situations, such as when the customer has a steam source, the steam turbine drive is more energy-saving and environmentally friendly than the electric drive method. This is prior art and will not be elaborated here.

[0026] The compressor unit includes a base 5, a compressor 4 installed on the base 5, and a speed reducer 3 connected between the compressor 4 and the steam turbine unit 1. An oil drainage pipeline 51 is arranged in the base 5. The oil drainage pipeline 51 includes a vertical section 511 connected to the bottom of the compressor 4 and an inclined section 512 connected to the vertical section 511. The included angle between the axial direction of the vertical section 511 and the axial direction of the inclined section 512 is an obtuse angle. The speed reducer 3 is connected to the steam turbine and the compressor 4 through the coupling 2 respectively to transmit the driving force provided by the steam turbine, and at the same time limit the compressor 4 to operate at a rated speed of 3000 rpm to avoid damage to the compressor 4. Since the conventional compressor units all set the lubricating oil collection tank in the base 5, the overall structure of the base 5 is relatively large. Since most of the lubricating oil collection tanks are rectangular boxes, it is difficult to clean the lubricating oil at the bottom, and impurities are likely to remain at the bottom, resulting in easy pollution of the lubricating oil. By arranging the oil drainage pipeline 51 to directly drain the lubricating oil, it is avoided to temporarily store it in the base 5, and it is also avoided that the staff needs to clean the lubricating oil collection tank for a long time, effectively reducing the workload.

[0027] In this embodiment, a connecting flange 513 is arranged at the outlet end of the inclined section 512 and outside the base 5. Through the connecting flange 513, it is convenient to externally connect a lubricating oil collection tank to avoid the residue of lubricating oil in the compressor unit.

[0028] In this embodiment, the value range of the included angle between the axial direction of the inclined section 512 and the axial direction of the vertical section 511 is 90° - 110°. Preferably, the included angle between the axial direction of the inclined section 512 and the axial direction of the vertical section 511 is 100°. Since the vertical section 511 extends along the height direction, and the included angle between the axial direction of the inclined section 512 and the axial direction of the vertical section 511 is 100°, that is, the included angle A between the axial direction of the inclined section 512 and the horizontal plane is 10°. With such a setting, on the one hand, the lubricating oil of the main engine can easily flow automatically along the inner wall of the inclined section 512 to the outlet end, and on the other hand, the inclination angle of the inclined section 512 is small, which is convenient to reduce the height of the base 5, thereby reducing the size of the base 5, controlling the production cost, and effectively reducing the overall weight of the compressor unit.

[0029] In this embodiment, the compressor 4 includes a machine head 43, a primary cooler 44 and a secondary cooler 45 which are respectively connected to the machine head 43. The vertical section 511 is connected to the lubricating oil outlet end of the machine head 43. A seal is provided between the vertical section 511 and the lubricating oil outlet end of the machine head 43. The gas compression and flow direction a of the compressor 4 is as follows: First, the gas enters the machine head 43 for primary compression to form high-pressure and high-temperature gas, then enters the primary cooler 44 for cooling, enters the machine head 43 again for secondary compression, then enters the secondary cooler 45 for cooling, and finally enters the machine head 43 for tertiary compression. The high-pressure gas at the designed state is discharged for users to use, realizing the function of compressing low-pressure gas into high-pressure gas. This is prior art and will not be described in detail here.

[0030] In addition, an expansion joint is provided at the high-pressure gas outlet 42 of the compressor 4 to compensate for the stress between the compressor 4 and the customer pipeline and prevent damage to the unit.

[0031] In this embodiment, the machine head 43 is arranged on the top of the base 5, and the primary cooler 44 and the secondary cooler 45 are respectively arranged on both sides of the base 5. By arranging the primary cooler 44 and the secondary cooler 45 on both sides of the base 5 and fixing them on the ground or a cast cement base, the load-bearing weight of the base 5 is reduced, facilitating the lightweight design of the base 5.

[0032] In this embodiment, an intake guide vane structure 46 for controlling the intake air volume is arranged at the intake end 41 of the machine head 43. The gas enters the machine head 43 through the intake guide vane structure 46. The intake guide vane structure 46 can control the gas flow rate by adjusting the blade angle and regulate the load of the machine head 43.

[0033] In this embodiment, the intake guide vane structure 46 includes a ventilation pipe connected to the intake end 41 of the machine head 43, intake guide vanes arranged in the intake pipe, and a driving assembly for driving the intake guide vanes to rotate. The driving assembly drives the intake guide vanes to rotate to control the intake air volume of the intake pipe. A plurality of intake guide vanes are provided and arranged at intervals along the circumference of the intake pipe. One end of the intake guide vane in the intake pipe is a fan-shaped blade, and they are in contact with each other to block the intake pipe. At the same time, the intake guide vanes can rotate under the action of the driving assembly, so that a gap is formed between adjacent intake guide vanes, thereby expanding the intake pipe, and thus realizing the control of the intake air volume of the intake pipe.

[0034] In this embodiment, the driving assembly includes a driving ring sleeved outside the intake pipe and a transmission structure connected between the driving ring and the intake guide vanes. The driving ring is externally connected with a driving member, and the driving member drives the driving ring to rotate, and then drives the intake guide vanes to rotate through the transmission structure to adjust the intake air volume of the intake pipe. This is prior art and will not be described in detail here.

[0035] The beneficial effects of the present utility model are as follows: By independently arranging a steam turbine unit and a compressor unit, the present application realizes the reuse of supply steam, reduces the floor area of the compressor unit, saves the installation space, and directly connects an oil discharge pipeline to the compressor in the base, enabling the lubricating oil to be discharged completely by means of the inclined section of the oil discharge pipeline, thus avoiding the residue of the lubricating oil.

[0036] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0037] The above-described embodiments merely represent several implementation manners of the present utility model, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A steam turbine-driven air compression system, characterized in that, The air compression system includes: a steam turbine unit for providing driving force; a compressor unit, including a base, a compressor mounted on the base, and a speed reducer connected between the compressor and the steam turbine unit. An oil discharge pipeline is provided in the base. The oil discharge pipeline includes a vertical section connected to the bottom of the compressor and an inclined section connected to the vertical section. The included angle between the axial direction of the vertical section and the axial direction of the inclined section is an obtuse angle.

2. The steam turbine-driven air compression system according to claim 1, characterized in that, A connecting flange is provided at the outlet end of the inclined section and outside the base.

3. The steam turbine-driven air compression system according to claim 2, wherein, The value range of the included angle between the axial direction of the inclined section and the axial direction of the vertical section is 90° - 110°.

4. The steam turbine-driven air compression system according to claim 1, wherein, The compressor includes a head, a first-stage cooler and a second-stage cooler respectively connected to the head. The vertical section is connected to the lubricating oil outlet end of the head.

5. The steam turbine-driven air compression system according to claim 4, wherein The head is arranged on the top of the base, and the first-stage cooler and the second-stage cooler are respectively arranged on both sides of the base.

6. The steam turbine-driven air compression system according to claim 4, wherein An inlet guide vane structure for controlling the intake air volume is provided at the inlet end of the head.

7. The steam turbine-driven air compression system according to claim 6, characterized in that, The inlet guide vane structure includes a ventilation pipeline connected to the inlet end of the head, inlet guide vanes arranged in the inlet pipeline, and a driving component for driving the inlet guide vanes to rotate. The driving component drives the inlet guide vanes to rotate to control the intake air volume of the inlet pipeline.

8. The steam turbine-driven air compression system according to claim 7, wherein The driving component includes a driving ring sleeved outside the inlet pipeline and a transmission structure connected between the driving ring and the inlet guide vanes.

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