CN205483572U - Microminiature gas turbine test bench oil feeding system - Google Patents

Abstract

The utility model discloses an oil supply system for a miniature gas turbine test bench, which comprises an oil depot, a combustion oil supply subsystem, an oil seal oil supply subsystem and a remote control subsystem. The system pre-stores lubricating oil, and its output pipeline is integrated with the output pipeline of the combustion oil supply subsystem. The oil depot, combustion oil supply subsystem and oil seal oil supply subsystem are respectively connected with the remote control subsystem. Among them, the combustion oil supply subsystem and the oil seal oil supply subsystem are switched and controlled through a two-position three-way valve. At the same time, it can also realize the preheating of fuel oil when the ambient temperature is low, improve the reliability of the gas turbine when it is started at low temperature, and use external waste heat to achieve efficient energy utilization. The system has a complete structure and reasonable design, and is capable of remote control, parameter adjustment and operation monitoring, realizing unattended on-site, with high security and automation.

Description

An Oil Supply System for Micro Gas Turbine Test Bench

technical field

The utility model relates to an oil supply system for a miniature gas turbine test bench, which belongs to the field of industrial gas turbines.

Background technique

The gas turbine test bench usually needs the combustion oil supply subsystem, the lubrication oil supply subsystem and the oil seal oil supply subsystem as the auxiliary oil supply system. Among them, the combustion oil supply subsystem is used to provide clean fuel with certain parameters for the combustion chamber of the gas turbine; the lubricating oil supply subsystem is used to provide lubricating oil with certain parameters for the rotating parts; Oil for oil seals required by certain parameters.

In the prior art, these three subsystems are usually independent systems due to different parameter requirements. For a micro gas turbine test bench, the gas turbine has its own lubrication and oil supply subsystem, while the combustion and oil supply subsystems and oil seal and oil supply subsystems need to be designed separately. The oil supply system of the prior art has the following problems:

1. Combustion oil supply subsystem and oil seal oil supply subsystem are designed and arranged separately, which is not conducive to the unified control and management of the test bench system, and is not convenient for operators to operate, manage and maintain.

2. There is a lack of fuel preheating device. When the ambient temperature is low, the gas turbine may occasionally fail to start normally or have insufficient operating power.

3. The degree of automation of the oil supply system is low. During the test, the operator needs to control and monitor the instruments and meters on site. Occasionally, there will be problems that the communication between them is not timely and affects the operation of the test bench. On the other hand, from the perspective of improving the safety of the test personnel, it is necessary to reduce the presence of people on duty.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide an oil supply system for a micro gas turbine test bench. Equipment purchase costs and operation and maintenance costs. At the same time, the gas turbine combustion oil supply subsystem and the oil seal oil supply subsystem are integrated, and a low-temperature preheating branch is designed to improve the success rate of low-temperature start-up of the gas turbine, and the use of external waste heat can achieve efficient energy utilization. The system has a complete structure and a reasonable design, and can perform remote control, parameter adjustment and operation monitoring, realize unattended on-site, and have a high degree of security and automation.

In order to achieve the above object, the utility model is achieved through the following technical solutions: a fuel supply system for a micro gas turbine test bench, including an oil depot, a combustion fuel supply subsystem, an oil seal fuel supply subsystem and a remote control subsystem, the The fuel depot provides fuel to the combustion fuel supply subsystem, and the fuel depot, the combustion fuel supply subsystem and the oil seal fuel supply subsystem are respectively connected to the remote control subsystem with signals.

Further, the oil depot includes an oil storage tank, a first liquid level gauge, a first pressure sensor, an oil and gas venting valve, a solenoid valve, an oil and gas venting pipeline and a main oil pipeline, and the first liquid level gauge, the first pressure sensor, the oil and gas The venting pipeline and the main oil pipeline are connected to the oil storage tank, the oil and gas venting valve is set on the oil and gas venting pipeline, and is linked with the first pressure sensor, the solenoid valve is set on the main oil pipeline, the first liquid level gauge, the second A pressure sensor, an oil and gas venting valve, and a solenoid valve are respectively connected to the remote control subsystem for signals.

Further, the combustion fuel supply subsystem includes a fuel tank, a fuel tank inlet pipeline, a fuel return pipeline, a fuel pump fuel inlet pipeline, a combustion fuel supply output pipeline, a second liquid level gauge, a fuel pump, a first flow meter, a second A temperature sensor, a second pressure sensor and a fire switch, the two ends of the oil inlet pipeline of the fuel tank are respectively connected with the main oil delivery pipeline and the fuel tank, and the oil return pipeline is connected with the fuel tank and the gas turbine, and there is a discharge branch on it , a purge valve is provided on the purge branch road, the two ends of the fuel pump inlet pipeline are respectively connected with the fuel tank and the fuel pump, and the two ends of the combustion fuel supply output pipeline are respectively connected with the fuel pump and the gas turbine. The second liquid level gauge is set on the fuel tank, and a first flowmeter, a first temperature sensor, a second pressure sensor and a fire protection switch are sequentially arranged on the fuel supply output pipeline according to the fuel outflow direction, the second liquid level gauge, The fuel pump, the first flow meter, the first temperature sensor, the second pressure sensor and the fire switch are respectively connected with the remote control subsystem for signals.

Further, the combustion fuel supply subsystem also includes a first pressure regulating branch, and the first pressure regulating branch includes a first pressure regulating return pipeline and a set The first pressure regulating valve on the first pressure regulating return oil pipeline, the first pressure regulating valve is signally connected to the remote control subsystem.

Further, the combustion fuel supply subsystem also includes a preheating branch, the preheating branch includes a fuel preheating pipeline and a heater arranged on the fuel preheating pipeline, and the two ends of the fuel preheating pipeline are respectively connected to the fuel The oil outlet of the pump is connected to the first two-position three-way valve arranged on the combustion oil supply output pipeline, and the heater and the first two-position three-way valve are respectively connected to the remote control subsystem for signals.

Further, the oil seal oil supply subsystem includes an oil seal oil tank, an oil pump oil inlet pipeline, an oil seal oil supply output pipeline, a third liquid level gauge, an oil pump, a second flow meter, a second temperature sensor and a third pressure sensor, the oil pump The two ends of the oil inlet pipeline are respectively connected with the oil seal oil tank and the oil pump. One end of the oil seal oil supply output pipeline is connected with the oil pump and the other end is connected with the gas turbine. The oil output pipeline is provided with a second flowmeter, a second temperature sensor and a third pressure sensor in sequence, and the third liquid level gauge, the oil pump, the second flowmeter, the second temperature sensor and the third pressure sensor are respectively connected with the remote control subsystem signal connection.

Further, the oil seal oil supply subsystem also includes a second pressure regulating branch, and the second pressure regulating branch includes a second pressure regulating oil return pipeline connected to the oil outlet end of the oil pump and the oil seal tank at both ends and a A second pressure regulating valve on the second pressure regulating return pipeline, the second pressure regulating valve is connected to the remote control subsystem for signal.

Further, it also includes a second two-position three-way valve arranged at the oil outlet end of the combustion oil supply output pipeline, and the oil seal oil supply output pipeline communicates with the gas turbine through the second two-position three-way valve.

Further, there is a height difference between the oil depot and the gas turbine test bench, and gravity is used to supply oil to the test bench.

In summary, the beneficial effects of the utility model are:

1. The system has a complete structure and integrates the combustion fuel supply subsystem and the oil seal fuel supply subsystem, which can be controlled and managed in a unified manner. According to specific geographical conditions, the oil depot is designed at a high place in the pilot plant area, which saves the purchase cost and operation and maintenance of fuel pumps cost.

2. The combustion oil supply subsystem is designed with a heater, which can preheat the fuel oil, improve the success rate of gas turbine start-up and increase the operating power. At the same time, the heater can be in the form of a heat exchanger, which is stored in the gas source system of the test bench Compression heat or the introduction of external waste heat to achieve efficient use of energy.

3. The system is designed with a remote control subsystem, which remotely transmits all the equipment signals and test signals of each subsystem to realize unattended on-site.

Description of drawings

Fig. 1 is the equipment arrangement drawing of the present utility model;

Fig. 2 is a process pipeline diagram of the utility model.

Explanation of reference signs:

1-oil storage tank, 2-first liquid level gauge, 3-first pressure sensor, 4-oil and gas vent valve, 5-first filter, 6-solenoid valve, 7-first valve, 8-second liquid Position gauge, 9-fuel tank, 10-first pressure regulating valve, 11-second filter, 12-second valve, 13-fuel pump, 14-third filter, 15-external heat source, 16-heater , 17-first two-position three-way valve, 18-first flow meter, 19-first temperature sensor, 20-second pressure sensor, 21-fire protection switch, 22-cleaning valve, 23-third liquid level gauge , 24-oil seal oil tank, 25-second pressure regulating valve, 26-fourth filter, 27-third valve, 28-oil pump, 29-fifth filter, 30-second flow meter, 31-second temperature Sensor, 32-third pressure sensor, 33-second two-position three-way valve, 34-gas turbine, 35-oil depot, 36-combustion oil supply subsystem, 37-oil seal oil supply subsystem, 38-remote control subsystem;

1'-Oil and gas venting pipeline, 2'-main oil pipeline, 3'-fuel tank inlet pipeline, 4'-fuel pump inlet pipeline, 5'-combustion oil supply output pipeline, 6'-first pressure regulator return oil Pipeline, 7'-fuel oil preheating pipeline, 8'-oil return pipeline, 9'-oil pump inlet pipeline, 10'-oil seal oil supply output pipeline, 11'-second pressure regulating oil return pipeline, 12'-equipment and Test signal lines.

detailed description

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments.

Please refer to Fig. 1 and Fig. 2, the utility model provides a technical solution: an oil supply system for a micro gas turbine test bench, including an oil depot 35, a combustion oil supply subsystem 36, an oil seal oil supply subsystem 37 and a remote control subsystem 38. The oil depot 35 provides fuel oil to the combustion and oil supply subsystem 36 and the oil seal and oil supply subsystem 37, and the oil depot 35, the combustion and oil supply subsystem 36 and the oil seal and oil supply subsystem 37 are respectively connected to the remote control subsystem 38 with signals . The various subsystems are integrated and controlled through the remote control subsystem 38, so that unattended on-site operation can be realized. Electrical control signals and test signals are transmitted through the equipment and test signal lines 12'. During the transmission process, the strong electricity and test signals are separated and protected against interference according to national standards.

As a further improvement of the above scheme, the oil depot 35 includes an oil storage tank 1, a first liquid level gauge 2, a first pressure sensor 3, an oil and gas vent valve 4, a first filter 5, a solenoid valve 6, and an oil and gas vent pipeline 1' and the main oil delivery pipeline 2', the first liquid level gauge 2, the first pressure sensor 3, the oil and gas venting pipeline 1' and the main oil delivery pipeline 2' are connected to the oil storage tank 1, and the oil and gas venting valve 4 is set at the oil and gas venting On the pipeline 1', the solenoid valve 6 is set on the main oil pipeline 2', the first liquid level gauge 2, the first pressure sensor 3, the oil and gas vent valve 4, and the solenoid valve 6 are respectively connected to the remote control subsystem signal 38. The oil depot 35 is set at a high place in the pilot plant area, and oil is transported to the outside by gravity, thereby saving the purchase cost and operation and maintenance cost of a high-power oil supply pump. The oil and gas vent valve 4 is linked with the first pressure sensor 3. When the pressure value fed back by the first pressure sensor 3 reaches the value set by the oil and gas vent valve 4, the oil and gas vent valve 4 is automatically opened to release pressure.

As a further improvement of the above scheme, the combustion and oil supply subsystem 36 includes a fuel tank 9, a fuel tank oil inlet pipeline 3', an oil return pipeline 8', a fuel pump oil inlet pipeline 4', a combustion oil supply output pipeline 5', A second liquid level gauge 8 , a second filter 11 , a second valve 12 , a fuel pump 13 , a third filter 14 , a first flow meter 18 , a first temperature sensor 19 , a second pressure sensor 20 and a fire switch 21 . The two ends of the fuel tank oil inlet pipeline 3' are respectively connected with the main fuel delivery pipeline 2' and the fuel tank 9. The oil return line 8' is connected to the fuel tank and the gas turbine 34, and a drain branch is provided on it for discharging the oil used for the oil seal. A drain valve 22 is provided on the drain branch to facilitate remote control and oil return. Line 8' is also provided with a control valve. The two ends of the fuel pump inlet pipeline 4' are respectively connected with the fuel tank 9 and the fuel pump 13, and the two ends of the combustion oil supply output pipeline 5' are respectively connected with the fuel pump 13 and the gas turbine 34, and the second filter 11 It is located on the fuel pump inlet line 4' and is used for oil inlet filtration. The third filter 14 is located on the combustion oil supply output line 5' to further finely filter the fuel entering the gas turbine 34. The second liquid level The meter 8 is arranged on the fuel tank 9, and a third filter 14, a first flow meter 18, a first temperature sensor 19, a second pressure sensor 20 and a fireproofing device are sequentially arranged on the combustion oil supply output pipeline 5' according to the fuel outflow direction. The switch 21 , the second liquid level gauge 8 , the fuel pump 13 , the first flow meter 18 , the first temperature sensor 19 , the second pressure sensor 20 and the fire switch 21 are respectively connected to the remote control subsystem signal 38 . According to the fuel flow, temperature and pressure signals measured by the first flow meter 18, the first temperature sensor 19, the second pressure sensor 20, etc., the fuel pump 13, the second valve 12, and the fire protection switch 21 are controlled through the remote control subsystem 38 Realize the regulation of fuel flow, temperature, pressure and control of system safety.

As a further improvement of the above-mentioned solution, the combustion fuel supply subsystem 36 also includes a first pressure regulating branch, and the first pressure regulating branch includes a first branch connected to the fuel outlet of the fuel pump 13 and the fuel tank 9 at both ends. A pressure regulating oil return line 6 ′ and a first pressure regulating valve 10 arranged on the first pressure regulating oil return line 6 ′, and the first pressure regulating valve 10 is connected with the remote control subsystem signal 38 . When the oil supply pressure is too large or fluctuates greatly, start the first pressure regulating valve 10 to reduce the pressure of the combustion oil supply output pipeline 5', or when the combustion oil supply output pipeline 5' temporarily requires pressure relief.

As a further improvement of the above scheme, the combustion fuel supply subsystem 36 also includes a preheating branch, the preheating branch includes a fuel preheating line 7' and a heater arranged on the fuel preheating line 7' 16. The heater 16 is not limited to an electric heater or uses an external heat source 15 for heating. The two ends of the fuel preheating pipeline 7' are respectively connected to the oil outlet end of the fuel pump 13 and the first two outlets arranged on the combustion oil supply output pipeline 5'. The heater 16 and the first two-position three-way valve 17 are respectively connected to the remote control subsystem 38 for signals. Installing the heater 16 improves the success rate of starting the gas turbine 34 and improves the operating power. At the same time, the heater 16 can be in the form of a heat exchanger to make full use of the compression heat stored in the gas source system of the test bench to achieve efficient energy utilization. The first two-position three-way valve 17 facilitates the tester to control whether to preheat or not through the remote control subsystem 38 .

As a further improvement of the above solution, the oil seal oil supply subsystem 37 includes an oil seal oil tank 24, an oil pump inlet line 9', an oil seal oil supply output line 10', a third liquid level gauge 23, a fourth filter 26, a third Valve 27, oil pump 28, fifth filter 29, second flowmeter 30, second temperature sensor 31 and third pressure sensor 32, the lubricating oil for oil seal is pre-stored in the oil seal oil tank 24, and the oil inlet pipeline 9' of the oil pump is two One end of the oil seal oil supply output pipeline 10' is connected to the oil pump 28 and the other end is connected to the gas turbine 34. The third liquid level gauge 23 is arranged on the oil seal tank 24, and the oil seal tank 24 The volume of the fuel tank 9 is smaller than that of the fuel tank 9. The fourth filter 26 is located on the oil pump inlet line 9' for oil inlet filtering, and the fifth filter 29 is located on the oil seal oil supply output line 10' for For fine filtration, a second flowmeter 30, a second temperature sensor 31, a third pressure sensor 32, a third liquid level gauge 23, an oil pump 28, and a second flowmeter are sequentially arranged on the oil seal oil supply output pipeline 10' according to the outflow direction. 30. The second temperature sensor 31 and the third pressure sensor 32 are signal-connected to the remote control subsystem 38 respectively.

As a further improvement of the above solution, the oil seal oil supply subsystem 37 also includes a second pressure regulating branch, and the second pressure regulating branch includes a first branch connected to the oil outlet of the oil pump 28 and the oil seal tank 24 at both ends. Two pressure regulating oil return pipelines 11 ′ and a second pressure regulating valve 25 arranged on the second pressure regulating oil returning pipeline 11 ′, and the second pressure regulating valve 25 is connected to a remote control subsystem 38 for signals. When the oil supply pressure is too large or fluctuates greatly, start the second pressure regulating valve 25 to reduce the pressure on the oil seal oil supply output pipeline 10', or when the oil seal oil supply output pipeline 10' temporarily requires pressure relief.

As a further improvement of the above solution, it also includes a second two-position three-way valve 33 arranged at the oil outlet end of the combustion oil supply output pipeline 5', and the oil seal oil supply output pipeline 10' passes through the second two-position three-way valve 33 It communicates with the gas turbine 34 for the purpose of integrating the two oil supply pipelines and remotely controlling the output.

The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the utility model The present utility model can be realized in other specific forms without the spirit or essential features. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to be included in the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only includes an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (9)

1. An oil supply system for a miniature gas turbine test bench, characterized in that it includes an oil depot (35), a combustion oil supply subsystem (36), an oil seal oil supply subsystem (37) and a remote control subsystem (38). The fuel depot provides fuel to the combustion fuel supply subsystem, and the fuel depot, combustion fuel supply subsystem and oil seal fuel supply subsystem are respectively connected to the remote control subsystem with signals. 2. A fuel supply system for a micro gas turbine test bench according to claim 1, characterized in that: the oil depot includes an oil storage tank (1), and an oil and gas venting pipeline (1') connected to the oil storage tank and the main oil pipeline (2'), the first liquid level gauge (2) and the first pressure sensor (3) are arranged on the oil storage tank, the oil and gas vent valve (4) is arranged on the oil and gas vent pipeline, and the oil and gas vent valve (4) is installed on the main oil pipeline An electromagnetic valve (6) is arranged on the line, and the first liquid level gauge, the first pressure sensor, the oil and gas venting valve, and the electromagnetic valve are respectively connected to the remote control subsystem for signals. 3. A fuel supply system for a micro gas turbine test bench according to claim 2, characterized in that: the combustion fuel supply subsystem includes a fuel tank (9), a fuel tank fuel inlet pipeline (3'), an oil return pipeline (13'), fuel pump inlet pipeline (4') and combustion oil supply output pipeline (5'), the two ends of the fuel tank inlet pipeline are respectively connected with the main fuel pipeline and the fuel tank, and the fuel return pipeline Connect the fuel tank and the gas turbine (34), on which there is a purge branch, and a purge valve (22) is provided on the purge branch, and the two ends of the fuel pump inlet line are respectively connected to the fuel tank and the fuel pump. The two ends of the combustion oil supply output pipeline are respectively connected with the fuel pump and the gas turbine (34), and the first flow meter (18) and the first temperature sensor (19 ), the second pressure sensor (20) and the fire switch (21), the fuel pump, the first flow meter, the first temperature sensor, the second pressure sensor and the fire switch are respectively connected to the remote control subsystem for signals. 4. A fuel supply system for a micro gas turbine test bench according to claim 3, characterized in that: the combustion fuel supply subsystem further includes a first pressure regulation branch, and the first pressure regulation branch includes two The first pressure regulating return pipeline (6') connected with the fuel pump outlet and the fuel tank respectively, and the first pressure regulating valve (10) arranged on the first pressure regulating return pipeline, the first A pressure regulating valve is signally connected to the remote control subsystem. 5. A fuel supply system for a micro gas turbine test bench according to claim 4, characterized in that: the combustion fuel supply subsystem also includes a preheating branch, and the preheating branch includes a fuel preheating pipeline ( 7') and the heater (16) arranged on the fuel preheating pipeline, the two ends of the fuel preheating pipeline are respectively connected with the oil outlet end of the fuel pump and the first two-position three-way connection set on the combustion oil supply output pipeline The valve (17) is connected, and the heater and the first two-position three-way valve are respectively signal-connected with the remote control subsystem. 6. A micro gas turbine test bench oil supply system according to any one of claims 1-5, characterized in that the oil seal oil supply subsystem includes an oil seal oil tank (24), an oil pump (28), an oil pump inlet Oil pipeline (9') and oil seal oil supply output pipeline (10'), the two ends of the oil pump inlet pipeline are respectively connected to the oil seal oil tank and the oil pump, one end of the oil seal oil supply output pipeline is connected to the oil pump, and the other end is connected to the gas turbine According to the fuel outflow direction, the second flow meter (30), the second temperature sensor (31) and the third pressure sensor (32) are arranged in sequence on the oil seal oil supply output pipeline, the oil pump, the second flow meter, and the second temperature sensor and the third pressure sensor are connected to the remote control subsystem for signal respectively. 7. A micro gas turbine test bench oil supply system according to claim 6, characterized in that: the oil seal oil supply subsystem also includes a second pressure regulation branch, and the second pressure regulation branch includes two The second pressure regulating return oil pipeline (11') connected with the oil outlet end of the oil pump and the oil seal oil tank respectively, and the second pressure regulating valve (25) arranged on the second pressure regulating return oil pipeline, the first The second pressure regulating valve is signal-connected with the remote control subsystem. 8. A fuel supply system for a micro gas turbine test bench according to claim 7, characterized in that it further comprises a second two-position three-way valve (33) arranged at the oil outlet end of the combustion oil supply output pipeline, the oil seal The oil supply output pipeline communicates with the gas turbine through the second two-position three-way valve. 9. A fuel supply system for a micro gas turbine test bench according to claim 8, characterized in that there is a height difference between the oil depot and the gas turbine test bench, and gravity is used to supply oil to the test bench.