Turbine expander test bed suitable for normal temperature environment

Abstract

The utility model discloses a turbo expander test bed suitable for a normal temperature environment. Comprising a profile rack, an electric proportional valve I, an electric proportional valve II, a flow meter I, a large-flow turbine inlet pipeline, a small-flow turbine inlet pipeline, a hydrostatic bearing air supply pipeline, a turbine air inlet main pipeline, a brake fan air inlet pipeline, a brake fan exhaust pipeline, a manual ball valve, a flow meter II, a flow meter III, an electric proportional valve III and an electric proportional valve IV. An electric ball valve I, an electric ball valve II, an electric ball valve III, an electric ball valve IV, a turbine mounting plate and a hydrostatic bearing gas supply tee joint can adapt to normal temperature tests of turbo expanders of different specifications and provide bearing gas pressure needed by a hydrostatic bearing, and real-time monitoring of pipeline flow is achieved through a flowmeter. Precise adjustment of the pipeline pressure is achieved through the electric proportional valve, the test bed effectively solves the problem that related parts need to be replaced repeatedly when turbo expanders of different specifications are tested through a traditional test bed, test convenience is improved, and labor intensity and cost are reduced.

Description

Technical Field

[0001] The utility model relates to a turbine expander test bench suitable for normal temperature environment, belonging to the technical field of turbine expanders. Background Art

[0002] As a core equipment component of large-scale refrigeration liquefaction systems, the turboexpander is based on the principle that the gas obtains energy through compression, and then expands in the working wheel of the turboexpander while outputting work to the outside. After the internal energy is reduced, the cooling capacity is output to the outside. In recent years, it has been widely used in deep cryogenic systems such as hydrogen and helium liquefaction.

[0003] Before the turbo expander is placed in a refrigeration low-temperature system for operation, it is necessary to conduct a normal temperature environmental test on it. Generally, during normal temperature tests, the inlet pressure on the braking side of the turbo expander is always the external atmospheric pressure, resulting in the turbo expander's characteristic ratio not being optimal, making it difficult to achieve optimal isentropic efficiency, and affecting the performance evaluation of the entire machine. In addition, the existing turbo expander test bench needs to repeatedly replace related components when testing turbo expanders of different specifications, resulting in high labor costs and cumbersome test processes. Summary of the invention

[0004] The utility model provides a turbine expander test bench suitable for normal temperature environment, which has a compact structure, can monitor the pipeline flow in real time and accurately control the pipeline pressure, and can effectively solve the problem that the characteristic ratio of the turbine expander cannot be changed when the normal temperature test is carried out. In addition, when the turbine expander test bench carries out normal temperature tests on turbine expanders of different specifications, it is not necessary to repeatedly replace related components, and up to five turbine expanders can be installed at the same time, which can realize rapid switching between tests of turbine expanders of different specifications, greatly improve the test efficiency, and reduce labor costs.

[0005] In order to solve the above technical problems, the utility model provides a turbine expander test bench suitable for normal temperature environment, including a profile bench, an electric proportional valve I, an electric proportional valve II, a flow meter I, a large flow turbine inlet pipeline, a small flow turbine inlet pipeline, a static pressure bearing air supply pipeline, a turbine intake main pipeline, a brake fan intake pipeline, a brake fan exhaust pipeline, a manual ball valve, a flow meter II, a flow meter III, an electric proportional valve III, an electric proportional valve IV, an electric ball valve I, an electric ball valve II, an electric ball valve III, an electric ball valve IV, a turbine mounting plate and a static pressure bearing air supply tee, the profile bench is installed by bolts and connected to the ground by bolts, the turbine mounting plate is connected to the profile bench by bolts, the large flow turbine inlet pipeline, the small flow turbine inlet pipeline, the static pressure bearing air supply pipeline, the brake fan intake pipeline, and the brake fan exhaust pipeline are connected to the profile bench by clamps. The manual ball valve is sealed and connected to the large-flow turbine inlet pipeline, the small-flow turbine inlet pipeline, the static pressure bearing air supply pipeline, the brake fan air intake pipeline and the brake fan exhaust pipeline respectively through threads, the electric proportional valve I and the static pressure bearing air supply tee are sealed and connected to the static pressure bearing air supply pipeline through threads, the flow meter I, the electric proportional valve II and the electric ball valve I are sealed and connected to the small-flow turbine inlet pipeline through threads, the flow meter II, the electric proportional valve III and the electric ball valve IV are sealed and connected to the large-flow turbine inlet pipeline through threads, the flow meter III, the electric proportional valve IV and the electric ball valve II are sealed and connected to the brake fan air intake pipeline through threads, the electric ball valve III is sealed and connected to the brake fan exhaust pipeline through threads, the turbine air intake main pipeline, the brake fan air intake pipeline and the brake fan exhaust pipeline are respectively connected to the external air supply pipeline through threads.

[0006] As a preferred technical solution of the utility model, the profile stand is connected by bolts and can be quickly disassembled and installed.

[0007] As a preferred technical solution of the utility model, there are five turbine mounting plates in total, which can simultaneously complete the installation of turbine expanders of various specifications.

[0008] As an optimal technical solution of the utility model, the turbine air intake main pipeline is divided into a large-flow turbine inlet pipeline, a small-flow turbine inlet pipeline and a hydrostatic bearing air supply pipeline, which can adapt to normal temperature testing of turbine expanders of different specifications and provide the bearing air pressure required by the hydrostatic bearing.

[0009] As an optimal technical solution of the utility model, there are five manual ball valves, which can respectively control the on-off of the large-flow turbine inlet pipeline, the small-flow turbine inlet pipeline, the static pressure bearing air supply pipeline, the brake fan air intake pipeline and the brake fan exhaust pipeline.

[0010] As a preferred technical solution of the utility model, the flowmeters I, II and III can respectively realize real-time monitoring of the flow in the small-flow turbine inlet pipeline, the large-flow turbine inlet pipeline and the brake fan intake pipeline.

[0011] As an optimal technical solution of the utility model, the electrical proportional valve I, electrical proportional valve II, electrical proportional valve III and electrical proportional valve IV can respectively realize precise regulation of the pressure in the hydrostatic bearing air supply pipeline, the small flow turbine inlet pipeline, the large flow turbine inlet pipeline and the brake fan intake pipeline.

[0012] As an optimal technical solution of the utility model, the electric ball valve I, electric ball valve II, electric ball valve III and electric ball valve IV can respectively realize the on-off control of the small flow turbine inlet pipeline, the brake fan intake pipeline, the brake fan exhaust pipeline and the large flow turbine inlet pipeline.

[0013] The beneficial effects achieved by the utility model are as follows: the turbine expander test bench suitable for normal temperature environment has a compact structure, can monitor the pipeline flow in real time and accurately control the pipeline pressure, and can effectively solve the problem that the characteristic ratio of the turbine expander cannot be changed when the normal temperature test is carried out. In addition, when the turbine expander test bench carries out normal temperature tests on turbine expanders of different specifications, it is not necessary to repeatedly replace related components, and up to five turbine expanders can be installed at the same time, which can realize rapid switching between tests of turbine expanders of different specifications, greatly improve the test efficiency, and reduce labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] In the figure: 1. Profile stand; 2. Electric proportional valve I; 3. Electric proportional valve II; 4. Flow meter I; 5. Large flow turbine inlet pipeline; 6. Small flow turbine inlet pipeline; 7. Hydrostatic bearing air supply pipeline; 8. Turbine intake main pipeline; 9. Brake fan intake pipeline; 10. Brake fan exhaust pipeline; 11. Manual ball valve; 12. Flow meter II; 13. Flow meter III; 14. Electric proportional valve III; 15. Electric proportional valve IV; 16. Electric ball valve I; 17. Electric ball valve II; 18. Electric ball valve III; 19. Electric ball valve IV; 20. Turbine mounting plate; 21. Hydrostatic bearing air supply tee. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0018] like Figure 1 As shown, the utility model provides a turbine expander test bench suitable for use in a normal temperature environment, comprising a profile bench (1), an electric proportional valve I (2), an electric proportional valve II (3), a flow meter I (4), a large flow turbine inlet pipeline (5), a small flow turbine inlet pipeline (6), a static pressure bearing air supply pipeline (7), a turbine air intake main pipeline (8), a brake fan air intake pipeline (9), a brake fan exhaust pipeline (10), a manual ball valve (11), a flow meter II (12), a flow meter III (13), an electric proportional valve III (14), an electric proportional valve IV (15 ), electric ball valve I (16), electric ball valve II (17), electric ball valve III (18), electric ball valve IV (19), turbine mounting plate (20) and static pressure bearing air supply tee (21), the profile stand (1) is installed by bolts and connected to the ground by bolts, the turbine mounting plate (20) is connected to the profile stand (1) by bolts, the large flow turbine inlet pipeline (5), the small flow turbine inlet pipeline (6), the static pressure bearing air supply pipeline (7), the brake fan air intake pipeline (9), and the brake fan exhaust pipeline (10) are connected to the profile by clamps. The bench (1) is connected, the manual ball valve (11) is sealed and connected to the large flow turbine inlet pipeline (5), the small flow turbine inlet pipeline (6), the static pressure bearing air supply pipeline (7), the brake fan air intake pipeline (9) and the brake fan exhaust pipeline (10) through threads, the electric proportional valve I (2) and the static pressure bearing air supply tee (21) are sealed and connected to the static pressure bearing air supply pipeline (7) through threads, the flow meter I (4), the electric proportional valve II (3) and the electric ball valve I (16) are sealed and connected to the small flow turbine inlet pipeline (6) through threads, The flow meter II (12), the electric proportional valve III (14) and the electric ball valve IV (19) are sealed and connected to the large flow turbine inlet pipeline (5) through threads, the flow meter III (13), the electric proportional valve IV (15) and the electric ball valve II (17) are sealed and connected to the brake fan air intake pipeline (9) through threads, the electric ball valve III (18) is sealed and connected to the brake fan exhaust pipeline (10) through threads, and the turbine air intake main pipeline (8), the brake fan air intake pipeline (9) and the brake fan exhaust pipeline (10) are respectively connected to the external air supply pipeline through threads.

[0019] Furthermore, the profile stand (1) is connected by bolts and can be quickly disassembled and assembled.

[0020] Furthermore, there are five turbine mounting plates (20) in total, which can simultaneously complete the installation of turbine expanders of various specifications.

[0021] Furthermore, the turbine air inlet main pipeline (8) is divided into a large-flow turbine inlet pipeline (5), a small-flow turbine inlet pipeline (6) and a hydrostatic bearing air supply pipeline (7), which can adapt to normal temperature tests of turbine expanders of different specifications and provide the bearing air pressure required by the hydrostatic bearing.

[0022] Furthermore, there are five manual ball valves (11) in total, which can respectively control the on / off of the large-flow turbine inlet pipeline (5), the small-flow turbine inlet pipeline (6), the static pressure bearing air supply pipeline (7), the brake fan air intake pipeline (9) and the brake fan exhaust pipeline (10).

[0023] Furthermore, flow meter I (4), flow meter II (12) and flow meter III (13) can respectively realize real-time monitoring of the flow in the small flow turbine inlet pipeline (6), the large flow turbine inlet pipeline (5) and the brake fan intake pipeline (9).

[0024] Furthermore, the electrical proportional valve I (2), the electrical proportional valve II (3), the electrical proportional valve III (14) and the electrical proportional valve IV (15) can respectively realize precise regulation of the pressure in the hydrostatic bearing air supply pipeline (7), the small flow turbine inlet pipeline (6), the large flow turbine inlet pipeline (5) and the brake fan air intake pipeline (9).

[0025] Furthermore, the electric ball valve I (16), the electric ball valve II (17), the electric ball valve III (18) and the electric ball valve IV (19) can respectively realize on-off control of the small flow turbine inlet pipeline (6), the brake fan intake pipeline (9), the brake fan exhaust pipeline (10) and the large flow turbine inlet pipeline (5).

[0026] The working principle of the utility model is as follows: the profile stand (1) is connected to the ground by bolts, the large flow turbine inlet pipeline (5), the small flow turbine inlet pipeline (6), the static pressure bearing air supply pipeline (7), the brake fan air intake pipeline (9) and the brake fan exhaust pipeline (10) are connected to the profile stand (1) by clamps to prevent vibration from affecting the performance of the whole machine during the turbine expander test. The large flow turbine expander can be fixed to one of the two turbine mounting plates (20) on the left side by bolts and connected to one of the two electric ball valves IV (19) by a bellows. When performing the normal temperature test, the manual ball valve (19) on the large flow turbine inlet pipeline (5) is opened. 1) and the corresponding electric ball valve IV (19). The gas supplied by the external gas source enters the large-flow turbine inlet pipeline (5) through the turbine inlet main pipeline (8). The flow rate is monitored by the flow meter II (12) and adjusted to the required inlet pressure through the electric proportional valve III (14) before the gas is transmitted to the cold end inlet of the turbine expander. The small-flow turbine expander can be fixed to one of the three turbine mounting plates (20) on the right side by bolts and connected to one of the three electric ball valves I (16) through a bellows. When conducting a normal temperature test, open the manual ball valve (11) and the corresponding electric ball valve I (16) on the small-flow turbine inlet pipeline (6). The gas supplied by the external gas source is The gas enters the small flow turbine inlet pipeline (6) through the turbine intake main pipeline (8), and the flow rate is monitored by flow meter I (4) and adjusted to the required intake pressure through electric proportional valve II (3) before the gas is transmitted to the cold end inlet of the turbine expander. When the characteristic ratio of the turbine expander needs to be adjusted during the test, the brake fan intake pipeline (9) and the brake fan exhaust pipeline (10) can be connected to the inlet and outlet of the hot end of the turbine expander respectively, and the manual ball valves (11) on the brake fan intake pipeline (9) and the brake fan exhaust pipeline (10) are opened respectively, and the electric ball valves II (17) and the electric ball valves III (18) are opened. The gas supplied by the external gas source passes through the flow meter. Ⅲ (13) monitors the flow rate and adjusts the required intake pressure through the electric proportional valve IV (15) and then transmits the gas to the hot end inlet of the turbine expander. The gas at the hot end outlet of the turbine expander is discharged to the external gas source through the brake fan exhaust pipeline (10). If a hydrostatic gas bearing is used when the turbine expander is working, the hydrostatic gas bearing can be connected to the hydrostatic bearing air supply tee (21) through a hose, and the manual ball valve (11) on the hydrostatic bearing air supply pipeline (7) is opened and adjusted to the required bearing air pressure through the electric proportional valve I (2). Then, the external gas source can enter the hydrostatic bearing air supply pipeline (7) through the turbine intake main pipeline (8) and finally be supplied to the hydrostatic gas bearing.

[0027] The utility model is a turbine expander test bench suitable for normal temperature environment, which has a compact structure, can monitor the pipeline flow in real time and accurately control the pipeline pressure, and can effectively solve the problem that the characteristic ratio of the turbine expander cannot be changed when the normal temperature test is carried out. In addition, when the turbine expander test bench carries out normal temperature tests on turbine expanders of different specifications, it is not necessary to repeatedly replace related components, and up to five turbine expanders can be installed at the same time, which can realize rapid switching between tests of turbine expanders of different specifications, greatly improve the test efficiency, and reduce labor costs.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A test bench for a turbine expander suitable for use under normal temperature conditions, comprising a profile bench (1), an electric proportional valve I (2), an electric proportional valve II (3), a flow meter I (4), a large flow turbine inlet pipeline (5), a small flow turbine inlet pipeline (6), a static pressure bearing air supply pipeline (7), a turbine air intake main pipeline (8), a brake fan air intake pipeline (9), a brake fan exhaust pipeline (10), a manual ball valve (11), a flow meter II (12), a flow meter III (13), an electric proportional valve III (14), an electric proportional valve IV (15), an electric ball valve I (16), an electric ball valve II (17), an electric ball valve III (18), an electric ball valve IV (19), a turbine mounting plate (20) and a static pressure bearing air supply tee (21), characterized in that: The profile stand (1) is installed by bolts and connected to the ground by bolts. The turbine mounting plate (20) is connected to the profile stand (1) by bolts. The large-flow turbine inlet pipeline (5), the small-flow turbine inlet pipeline (6), the static-pressure bearing air supply pipeline (7), the brake fan air intake pipeline (9), and the brake fan exhaust pipeline (10) are connected to the profile stand (1) by clamps. The manual ball valve (11) is respectively sealed and connected to the large-flow turbine inlet pipeline (5), the small-flow turbine inlet pipeline (6), the static-pressure bearing air supply pipeline (7), the brake fan air intake pipeline (9), and the brake fan exhaust pipeline (10) by threads. The electric proportional valve I (2) and the static-pressure bearing air supply tee (21) are connected to the static-pressure bearing air supply pipeline by threads. The pipeline (7) is sealed and connected, the flow meter I (4), the electric proportional valve II (3) and the electric ball valve I (16) are sealed and connected to the small flow turbine inlet pipeline (6) through threads, the flow meter II (12), the electric proportional valve III (14) and the electric ball valve IV (19) are sealed and connected to the large flow turbine inlet pipeline (5) through threads, the flow meter III (13), the electric proportional valve IV (15) and the electric ball valve II (17) are sealed and connected to the brake fan air intake pipeline (9) through threads, the electric ball valve III (18) is sealed and connected to the brake fan exhaust pipeline (10) through threads, and the turbine air intake main pipeline (8), the brake fan air intake pipeline (9) and the brake fan exhaust pipeline (10) are respectively connected to the external air supply pipeline through threads.

2. A turbo expander test bench suitable for normal temperature environment according to claim 1, characterized in that: The profile stand (1) is connected by bolts and can be quickly disassembled and assembled.

3. The turbo expander test bench suitable for normal temperature environment according to claim 1, characterized in that: There are five turbine mounting plates (20) in total, which can simultaneously complete the installation of turbine expanders of various specifications.

4. The turbo expander test bench suitable for normal temperature environment according to claim 1, characterized in that: The turbine air inlet main pipeline (8) is divided into a large-flow turbine inlet pipeline (5), a small-flow turbine inlet pipeline (6) and a hydrostatic bearing air supply pipeline (7), which can adapt to normal temperature tests of turbine expanders of different specifications and provide the bearing air pressure required by the hydrostatic bearing.

5. The turbo expander test bench suitable for normal temperature environment according to claim 1, characterized in that: There are five manual ball valves (11) in total, which can respectively control the on / off of a large-flow turbine inlet pipeline (5), a small-flow turbine inlet pipeline (6), a static-pressure bearing air supply pipeline (7), a brake fan air intake pipeline (9), and a brake fan exhaust pipeline (10).

6. The turbo expander test bench suitable for normal temperature environment according to claim 1, characterized in that: The flowmeter I (4), flowmeter II (12) and flowmeter III (13) can respectively realize real-time monitoring of the flow in the small-flow turbine inlet pipeline (6), the large-flow turbine inlet pipeline (5) and the brake fan intake pipeline (9).

7. The turbo expander test bench suitable for normal temperature environment according to claim 1, characterized in that: The electrical proportional valve I (2), electrical proportional valve II (3), electrical proportional valve III (14) and electrical proportional valve IV (15) can respectively realize precise regulation of the pressure in the hydrostatic bearing air supply pipeline (7), the small flow turbine inlet pipeline (6), the large flow turbine inlet pipeline (5) and the brake fan air intake pipeline (9).

8. The turbo expander test bench suitable for normal temperature environment according to claim 1, characterized in that: The electric ball valve I (16), the electric ball valve II (17), the electric ball valve III (18) and the electric ball valve IV (19) can respectively realize on-off control of the small flow turbine inlet pipeline (6), the brake fan air intake pipeline (9), the brake fan exhaust pipeline (10) and the large flow turbine inlet pipeline (5).

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