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Multi-shaft turbine compression expander

A technology of compression expander and turbo expander, which is applied in the direction of mechanical equipment, machine/engine, non-variable pump, etc., and can solve the problem of deviation from the optimal operating speed at the expansion end, complex equipment layout and piping system, and organization mode Unable to meet the requirements and other problems, to achieve the effect of compact and beautiful unit, reduced space layout, and improved efficiency

Pending Publication Date: 2021-12-31
四川蜀道装备科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the current low-temperature refrigeration device, the centrifugal compressor and the turboexpander are independent units, each equipped with its own oil supply system, which occupies a large area, and the equipment layout and piping system are very complicated. Therefore, in a limited layout In the space, the traditional organization of dynamic equipment cannot meet the requirements; in addition, the supercharged turboexpander still has the problem of matching the power, flow rate, expansion ratio and supercharging ratio of supercharging and expansion, even if the matching is very good. Well, under variable working conditions, the efficiency of both the booster end and the expansion end will decrease, and the speed of the unit will also decrease to varying degrees, causing the expansion end to deviate from the optimal operating speed, and the efficiency will be significantly reduced
[0005] In addition, in the field of energy recovery, the power generation turbo expander converts the energy recovered by the generator into electrical energy, which has the conversion efficiency of the generator. Similarly, the centrifugal compressor in the field of gas compression drives the motor to convert electrical energy into mechanical work for input into the centrifugal compressor unit. The conversion efficiency of the motor, if the compressor and the expander are used at the same time, due to the dual utilization efficiency of the motor and the generator, the energy utilization efficiency is greatly reduced

Method used

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  • Multi-shaft turbine compression expander
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  • Multi-shaft turbine compression expander

Examples

Experimental program
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Embodiment 1

[0026] Embodiment 1. In this embodiment, if Figure 1 to Figure 2 As shown, a multi-shaft turbocompression expander includes a one-stage centrifugal compressor 1, a two-stage centrifugal compressor 2, a three-stage centrifugal compressor 3 and a centripetal turboexpander 4, and the one-stage centrifugal compressor 1 The two-stage centrifugal compressor 2 is axially connected through a gearbox 5, and the three-stage centrifugal compressor 3 is also axially connected with the centripetal turbo expander 4 through a gearbox 5; the one-stage centrifugal compressor 1, two The first-stage centrifugal compressor 2 and the third-stage centrifugal compressor 3 are connected through pipeline components.

[0027] The present invention is further configured as follows: the first-stage centrifugal compressor 1 and the second-stage centrifugal compressor 2 are respectively axially connected to the two ends of the first high-speed shaft 6 in the gearbox 5; the third-stage centrifugal compress...

Embodiment 2

[0039] Embodiment 2. This embodiment provides a multi-shaft turbocompressor-expander, including a first-stage centrifugal compressor 1, a second-stage centrifugal compressor 2, a third-stage centrifugal compressor 3, and a centripetal turboexpander 4. The one-stage centrifugal compressor 1 and the two-stage centrifugal compressor 2 are axially connected through a gear box 5, and the three-stage centrifugal compressor 3 and the centripetal turboexpander 4 are also axially connected through a gear box 5; the gear The box 5 is driven by energy recovery components; the first-stage centrifugal compressor 1 , the second-stage centrifugal compressor 2 , the third-stage centrifugal compressor 3 and the centripetal turboexpander 4 are connected through pipeline components.

[0040] The present invention is further configured as follows: the first-stage centrifugal compressor 1 and the second-stage centrifugal compressor 2 are respectively axially connected to the two ends of the first h...

Embodiment 3

[0054] Embodiment three, the difference with embodiment one, embodiment two is: as image 3 Shown: no drive assembly or energy recovery assembly is provided, so that a multi-shaft turbocompressor-expander with balanced input and output power is provided; in Embodiment 2 and Embodiment 3, the centripetal turboexpander 4 and the three-stage centrifugal compressor Machine 3 is not communicated through pipelines.

[0055] In all embodiments, the working medium gas passing through the one-stage centrifugal compressor 1, the two-stage centrifugal compressor 2, the three-stage centrifugal compressor 3, the centripetal turbo expander 4 and the gear box 5 can be the same fluid , The same medium or different mediums, the working medium gas is one or more mixed gases of air, nitrogen, hydrocarbon gas, carbon dioxide, water vapor, and Freon.

[0056] The above three embodiments are an integrated unit integrating an H-type multistage centrifugal compressor and a single-stage or multi-stag...

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Abstract

The invention discloses a multi-shaft turbine compression expander which comprises a first-stage centrifugal compressor (1), a second-stage centrifugal compressor (2), a third-stage centrifugal compressor (3) and a centripetal turbine expander (4), and the first-stage centrifugal compressor (1) and the second-stage centrifugal compressor (2) are in shaft connection through a gearbox (5). The third-stage centrifugal compressor (3) is also in shaft connection with the centripetal turbine expander (4) through the gearbox (5); and the first-stage centrifugal compressor (1), the second-stage centrifugal compressor (2) and the third-stage centrifugal compressor (3) are in communication through pipeline assemblies. The multi-shaft turbine compression expander has the advantages that the arrangement is more compact, a pipeline system is simplified, the resistance is reduced, and the efficiency of the expander is improved.

Description

technical field [0001] The invention relates to the field of gas treatment and energy recovery, in particular to a multi-shaft turbocompression expander. Background technique [0002] In the low-temperature refrigeration process with an expander, the turbo expander provides cooling capacity for the entire device, and the gas working medium realizes a nearly adiabatic isentropic expansion process inside. The expansion process obtains a low temperature and works externally at the same time, so for The application of the expander includes two effects: obtaining low-temperature cooling capacity and recovering energy (work done externally), and the expander is also widely used in the field of energy recovery; no matter what type of application the expander requires a braking end, the expansion The work output of the expander is absorbed and the operating speed of the expander is controlled at the same time. At present, there are turbocompressors (booster), generators, oil brakes...

Claims

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Application Information

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IPC IPC(8): F01D15/08F01D15/12F04D17/12F04D25/16
CPCF01D15/08F01D15/12F04D17/12F04D25/16
Inventor 丁俊肖辉和谭群声王小芳
Owner 四川蜀道装备科技股份有限公司