RU2522230C1 - Compressor test method and installation for testing - Google Patents

Abstract

FIELD: machine building.SUBSTANCE: group of inventions relates to compressor engineering and compressor testing installations, in particular, it is intended for use at testing of axial-flow, centrifugal and mixed flow compressors and their combinations, at using of adjustable engine drive. A gas turbine engine is used as a power drive, the compressor is rotated via a summing speeder, and the rotation mode is changed by the delivery of the part of the withdrawn compressed air to the gas turbine engine and/or conversion of the compressed air energy into the rotation energy and its transfer to the summing speeder. The compressed air energy can be converted into the rotation energy with the help of an additional turbine connected to the summing speeder and set on the withdrawal pipeline for compressed air of the compressor. The part of the withdrawn compressed air can be delivered to the gas turbine engine via a heat exchanger. A compressor testing installation comprises a supply pipeline with a damper, an additional turbine and a bypass pipeline with throttles set on it, it comprises a gas turbine engine as a power drive, a summing speeder - as a speeder, the bypass pipeline is connected to the supply and outlet pipelines, and the additional turbine is installed so that to be able to transfer the rotation to the summing speeder and is connected on the supply side to the outlet pipeline and on the withdrawal side - to the bypass pipeline by a branch pipe with a throttle, the gas turbine engine is connected to the damper and the supply pipeline. The compressor testing installation can be fitted by a bypass line with a heat exchanger set on the above bypass pipeline and can be fitted with throttles providing for connection-disconnection of the heat exchanger to/from the flow.EFFECT: reduced energy demand and expanded functionality in terms of implementing compressor testing modes.5 cl, 1 dwg

Description

The invention relates to compressor engineering and installations for testing a compressor, in particular, is intended for use in testing axial, centrifugal and diagonal compressors, as well as combinations thereof, when using an adjustable motor drive.

The closest in technical essence and the achieved result is the method and installation for testing the compressor, which are disclosed in the patent description "Stand for the study of the compressor and a description of its operation."

A known method for testing a compressor includes rotating the test compressor from a power drive through a multiplier, creating a stream of high-energy compressed compressor air and its discharge, changing the rotation mode of the compressor to determine the stability of its operation.

A known installation for testing a compressor comprises a power drive connected to each other, a multiplier, a test compressor, a stilling chamber with an air flow equalizing device, an air collector connected to the outlet pipe, and throttle devices.

/ RU 2253854, IPC 7 G01M 15/00, F04D 27/02, Publ. 06/10/2005. / The disadvantage of the method and the well-known bench for testing the compressor is that for compressors of high power require significant costs of electrical power necessary to achieve the required speed of the compressor, and the high-energy flow of compressed air generated by the compressor is not useful.

The objective of the invention is the creation of an economical method for testing the compressor under study and the creation of a test facility that is useful using a high-energy flow of compressed air, providing the required speed and the required power in all operating modes when taking characteristics up to the boundary of stable operation.

The expected technical result is a reduction in energy costs, expanding the flexibility of test modes.

The expected technical result is achieved by the fact that in the known method for testing the compressor, including rotating the test compressor from the power drive through the multiplier, creating a stream of high-energy compressed compressor air and its discharge, changing the rotation mode of the compressor to determine the stability limit, gas turbine is used as the power drive the engine, the compressor is rotated through the summing multiplier, and the change in the rotation mode is carried out by supplying part of driven compressed air to a gas turbine engine and / or converting the energy of compressed air into rotational energy and transmitting it to the summing multiplier. The conversion of compressed air energy into rotational energy can be carried out using an additional turbine connected to a summing multiplier installed on the compressed air discharge pipe. Part of the exhaust compressed air can be fed to the gas turbine engine through a heat exchanger.

The technical result is achieved by the fact that the installation for testing a compressor, comprising a power drive connected to each other, a multiplier, a test compressor, a stilling chamber with an air flow equalizing device, an air collector connected to an outlet pipe, throttle devices, according to the invention, is equipped with a supply pipe with a damper, an additional turbine and a bypass pipe with throttles installed in it, it contains a gas turbine engine as a power drive e, and the multiplier is a summing multiplier, the bypass pipe is connected to the supply and output pipelines, and an additional turbine is installed with the possibility of transmitting rotation to the summing multiplier and is connected from the supply side to the output pipe, and from the discharge side to a branch pipe with a throttle with a bypass pipe, this gas turbine engine is connected to the damper and the supply pipe. The turbocompressor testing installation can be equipped with a bypass pipe with a heat exchanger installed on the bypass pipe, and equipped with chokes that provide connection-disconnection of the heat exchanger from the flow.

The essence of the proposal lies in the fact that electric rotation drives in traditional installations for testing high power compressors are quite expensive, in some cases the power developed by them is insufficient for testing compressors in all areas of the operating range. The air compressed by the test compressor has significant energy, but in traditional installations this air is released into the atmosphere. To increase drive power, expand the range of compressor test modes and use the energy of compressed air: the rotation drive is replaced by a gas turbine engine, which is connected through a summing multiplier to the compressor. The installation is equipped with a system of pipelines and throttles, which allows directing the air compressed by the compressor either to the inlet of the gas turbine engine, or passing air through an additional turbine, and transferring the generated rotational energy to a summing multiplier or passing air through an additional turbine and supplying the same air to the engine. At the same time, air can also be supplied to the engine directly from the compressor. A bypass pipeline is provided in the installation, allowing air to pass through the heat exchanger before supplying compressed air to the gas turbine engine and thereby adjust the temperature of the air supplied to the engine. Thus, by changing the parameters of the air supplied to the engine and summing up the additionally generated energy by the multiplier, it is possible to change the power supplied to the tested compressor, reaching the desired test mode.

The drawing shows a diagram of the installation for testing the compressor, which implements the method of testing the compressor.

The installation comprises a drive 1, a summing factor 2, a compressor 3 under study, a stilling chamber with an airflow equalizing device 4. At the inlet of a stilling chamber 4, a measuring manifold 5 is located for measuring air flow through the studied compressor 3, and an air collector 6 is installed at the outlet of the compressor 3 connected to the outlet pipe 7. As a drive 1, a gas turbine engine is used, connected to the damper 4 and the supply pipe 8. The output pipe 7 and the supply pipe 8 are connected They are connected by a bypass pipe 9 with throttles 10. An additional turbine 11 is mounted with the possibility of transmitting rotation to the summing multiplier 2 and is connected by a pipe 12 from the supply side of the turbine 11 to the output pipe 7, and from the discharge side by a pipe 13 with a bypass pipe 9. Bypass pipe 14 with the heat exchanger 15 is installed on the bypass 9 pipe, provide using the throttle connection-disconnection of the heat exchanger 15 from the stream.

The installation allows you to implement the proposed method for testing the compressor.

Example 1

The tested compressor 3 is mounted in the installation, connecting the drive and process pipelines. Close the inductors D ₁ D ₃ and D ₄ and open the inductors D ₂ , D ₅ and D ₆ . Start engine 1, for example: GTUAL-31ST (gas turbine unit type AL-31 stationary, then turbine). As the number of revolutions of the engine and compressor 3 increases, compressed air from the compressor through the air intake 6, and then through the outlet 7, bypass 9, bypass pipe 14 with heat exchanger 15 and supply pipe 8 is fed to the stilling chamber 4 and engine 1. The mass of air entering the turbine significantly increases, which allows to increase engine power. By blocking the throttle D _5, regulate the flow of air entering the turbine, achieve the required speed of rotation of the turbine rotor, for example: n _ct = 5300 rpm, which is converted in multiplier 2 to a rotation speed, for example: 10700 rpm necessary for this test mode compressor 3. The duration of the compressor test and test modes are determined by the program and test plan.

Example 2

After installing the test compressor 3 in the installation of the drive and process piping, close the inductors D ₄ , D ₅ and D ₆ and open the inductors D ₁ , D ₂ , and D ₃ . The engine is started and compressed air from the compressor is passed through the air intake 6, and then partially through the outlet pipe 7, and the other part through the pipe 12 from the inlet side of the additional turbine 11, the turbine 11, through the pipe 13 from the outlet side, bypass 9 and outlet 7 pipelines divert to the atmosphere. The additional rotational power generated by the turbine is transmitted to the summing multiplier 2 and compressor 3. The total shaft power is summed according to the formula N _B = N _CT + N _{Extra ST}

where N _B is the total power;

N _CT is the power of the power turbine;

N _Dop.ST - power additional power turbine.

By blocking the throttles D ₃ and D _{2, they} regulate the flow of air entering the additional 11 turbine, changing the mass of the working fluid, achieve the required power at a given shaft speed after multiplier 2, for example: 10700 rpm necessary for this compressor test mode.

Example 3

After installing the test compressor 3 in the installation of the drive and process piping, close the inductors D ₁ and D ₅ and open the inductors D ₂ , D ₃ , D ₄ and D ₆ . The engine 1 is started and the compressed air from the compressor 3 is passed through the air collector 6, and then through the outlet pipe 7, and through the pipe 12 from the inlet side of the additional turbine 11, the turbine 11, through the pipe 13 from its outlet side, the bypass 9 and the supply pipe 8 into the stilling chamber 4 and engine 1 (turbine). In this case, the mass of the working fluid (air) is transmitted as much as possible to the engine for this installation, while the additional rotational power generated by the additional turbine is also transmitted to the summing multiplier 2 and compressor 3. By adjusting the opening of the throttles D ₁ D ₂ , D ₃ D ₅ and D ₆ , set the shaft rotation power required for the test and the supplied power.

The above examples of the implementation of the compressor test method on the proposed installation do not exhaust all possible variants of the method implementation within the scope of the proposed invention and allow other options for creating the required shaft rotation modes for testing compressors by changing the opening-closing order of the chokes D ₁ D ₂ , D ₃ , D ₄ , D ₅ and D ₆ and the use of bypass pipelines and heat exchangers.

The application of the proposed method for testing compressors and installations for testing compressors can reduce energy costs, expand the ability to implement compressor test modes and ensure the achievement of the required test modes.

Claims (5)

1. A compressor test method, including rotating the test compressor from a power drive through a multiplier, creating a stream of high-energy compressed compressor air and discharging it, changing the rotation mode of the compressor to determine the stability limit, characterized in that a gas turbine engine is used as the power drive, the compressor is rotated through summing multiplier, and changing the rotation mode is carried out by supplying part of the compressed air to the gas turbine engine and / or convert compressed air energy into rotational energy and transmitting it to a summing multiplier. 2. The method according to claim 1, characterized in that the conversion of compressed air energy into rotational energy is carried out using an additional turbine connected to a summing multiplier and installed on the compressed air discharge pipe. 3. The method according to claim 1, characterized in that a portion of the exhausted compressed air is supplied to the gas turbine engine through a heat exchanger. 4. Installation for testing a compressor, comprising a power drive connected to each other, a multiplier, a test compressor, a stilling chamber with an air flow equalizing device, an air collector connected to the outlet pipe, throttling devices, characterized in that it is equipped with a supply pipe with a damper, additional a turbine and a bypass pipe with throttles installed in it, it contains a gas turbine engine as a power drive, and the multiplier - a summing a multiplier, a bypass pipe is connected to the supply and output pipelines, and an additional turbine is installed with the possibility of transmitting rotation to the summing multiplier and is connected from the supply side to the output pipe, and from the discharge side to a pipe with a throttle with a bypass pipe, while the gas turbine engine is connected to the damper and inlet pipe. 5. Installation for testing a turbocharger according to claim 4, characterized in that it is equipped with a bypass pipe with a heat exchanger installed on the bypass pipe and equipped with chokes that provide connection-disconnection of the heat exchanger from the flow.