CN107063693B - Energy-saving expander performance testing device and its working method - Google Patents

Energy-saving expander performance testing device and its working method Download PDF

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Publication number
CN107063693B
CN107063693B CN201710401834.7A CN201710401834A CN107063693B CN 107063693 B CN107063693 B CN 107063693B CN 201710401834 A CN201710401834 A CN 201710401834A CN 107063693 B CN107063693 B CN 107063693B
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pressure
working medium
buffer tank
sensor
low pressure
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CN201710401834.7A
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CN107063693A (en
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孙志新
许福泉
王蜀家
赖剑鹏
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Fuzhou University
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Fuzhou University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00Testing of engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00General layout or general methods of operation of complete plants
    • F01K13/003Arrangements for measuring or testing

Abstract

The present invention relates to a kind of energy-saving expander performance testing device and its working methods, it is characterised in that: energy-saving expander performance testing device, it is characterised in that: including activation system, circulation system and monitoring system;The present invention can test working characteristics of a variety of working medium under different operating conditions, and system is closed operation, avoid the waste of working medium in open system.Heater and condenser are saved in the circulatory system, are avoided heat from heat source and are largely taken away by cold source, have saved testing cost.

Description

Energy-saving expander performance testing device and its working method
Technical field:
The present invention relates to a kind of energy-saving expander performance testing device and its working methods.
Background technique:
The energy utilization rate in China is low, and there are a large amount of low grade residual heats for the highly energy-consuming trades such as steel, metallurgy and chemical industry.It adopts Low temperature exhaust heat can be efficiently recycled with Organic Rankine Cycle to generate electricity, and realize making full use of for the energy.Expanding machine is as organic The power output part of Rankine cycle, performance have important influence to the recycling of residual heat resources.Exist to test expanding machine Operating status under various operating conditions guarantees the efficiently and smoothly operated of expanding machine, need to by test platform to the performance of expanding machine into Row experiment test.
Application No. is the Chinese invention patents of CN201610164576.0 to disclose a kind of scroll expander performance test system System, is sequentially connected by air compressor machine, air accumulator, drier, filter, scroll expander, dynamometer machine and is formed.The system uses room temperature Dry air under normal pressure after dehydrating and removing impurities is test working medium, utilizes each of the measurement of power machine testing scroll expander with control system A output performance parameter, and by MCGS configuration software by all instrument to collect to signal upload on host computer, thus To the relationship of the parameters such as output work, torque and revolving speed and its inlet pressure, inlet temperature, back pressure and mass flow.Above-mentioned hair The technical solution of bright patent is the Performance Test System based on scroll expander, which has structure simple, maintenance and installation side Just the advantages of, but the system is open system, can only use air as test working medium.Open circulation can not recycle working medium, if When test working medium is organic working medium, the huge waste of working medium and the increase of testing cost, therefore detectable organic working medium will cause The test macro of expanding machine should use closed cycle.
Application No. is the Chinese invention patents of CN201610232607.1 to disclose a kind of having using fume afterheat as heat source Machine Rankine cycle.Foregoing invention uses organic working medium closed cycle, can make full use of fume afterheat.But since flue gas need to be by other Production unit provides, and parameter is influenced by production process, and variation range is larger, is not suitable for the heat as expanding machine test macro Source.
Summary of the invention:
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, a kind of energy-saving expander performance testing dress is provided It sets and its working method avoids heat from heat source and taken away by cold source without boiler and condenser when the present invention operates normally, energy conservation It has a high potential.
Energy-saving expander performance testing device of the present invention, it is characterised in that: including activation system, thermodynamic cycle System and monitoring system;
Wherein activation system includes the starting trouble for being in turn connected to form circulation, the first shut-off valve, low pressure buffer tank 3 and Two shut-off valves;Starting trouble is electrically heated boiler, for working medium is heated to set temperature at experiment beginning initial stage, is reached to temperature It can be out of service after to setting value;
Circulation system includes the low pressure buffer tank, compressor, high-pressure buffering pot, regulating valve for being in turn connected to form circulation It is other between the low pressure buffer tank and high-pressure buffering pot to be connected to working medium pump with tested expanding machine, it is connected to by the tested expanding machine Dynamometer machine;
Monitoring system includes the first flow sensor positioned at suction port of compressor end, and the second flow of working medium pump arrival end passes Sensor is tested the third flow sensor at expander inlet end, is tested first temperature sensor and first at expander outlet end Pressure sensor, compressor outlet second temperature sensor and second pressure sensor, the third temperature of working medium pump outlet end Sensor and third pressure sensor and the 4th temperature sensor and the 4th pressure sensor at tested expander inlet end.
Further, also other between above-mentioned low pressure buffer tank and high-pressure buffering pot to be connected to pressure reducing valve, the high-pressure buffering pot It is also connected with a cooling water pump.
The working method of the energy-saving expander performance testing device of the present invention, is illustrated by working medium of water:
When the device starts, it is first turned on the first shut-off valve and the second shut-off valve, runs starting trouble;Starting trouble it is interior It sets water pump to squeeze into the working medium in low pressure buffer tank in starting trouble, working medium enters low in starting trouble after endothermic temperature raising It presses in surge tank, is then again introduced into starting trouble circulation heat absorption;Reach 1.0MPa to the working medium in low pressure buffer tank, 179.9 DEG C when, open compressor, high-pressure buffering pot will be sent into after the both vapor compression to 2.5MPa isolated in low pressure buffer tank;It opens and adjusts Valve is saved, working substance steam enters tested expanding machine and carries out expansion work, by ginsengs such as output power, the torques of dynamometer machine measurement expanding machine Number;Steam exhaust after finishing function returns to low pressure buffer tank, if organic working medium is wet working medium, the steam exhaust after expansion is vapour-liquid mixing Object, in low pressure buffer tank after steam-water separation, the saturated vapor (1.0MPa, 179.9 DEG C) separated is again introduced into working medium Compressor continues cycling through;Working medium is superheated steam (2.5MPa, 313.1 DEG C) at compressor outlet, and when operating normally, high pressure is slow It rushes for saturation state in tank, therefore, extra heat is taken away by the cooling water that cooling water pump is squeezed into;When normal operation, it is tested swollen The saturated solution that the moist steam that swollen machine is sent into low pressure buffer tank is isolated stays in meeting in low pressure buffer tank so that its liquefaction constantly rises Height, in order to maintain the liquid level equilibrium in low pressure buffer tank and high-pressure buffering pot, working medium pump can satisfy the low pressure in low pressure buffer tank It is sent into high-pressure buffering pot (2.5MPa) with after working medium (1MPa) pressurization;Pipeline where pressure reducing valve is bypass duct, is tested swollen When swollen machine breaks down, the working medium in high-pressure buffering pot enters low pressure buffer tank after being depressured by pressure reducing valve;
The temperature and pressure of tested expander outlet is monitored by the first temperature sensor and first pressure sensor.Pressure The temperature and pressure of contracting machine outlet is monitored by second temperature sensor and second pressure sensor.The temperature of working medium pump discharge It is monitored with pressure by third temperature sensor and third pressure sensor.The temperature and pressure of tested expander inlet is by the Four temperature sensors and the 4th pressure sensor are monitored;
The flow of suction port of compressor is monitored by first flow sensor.The flow of working medium pump intake is passed by second flow Sensor is monitored.The flow of tested expander inlet is monitored by third flow sensor.
For apparatus of the present invention when operating normally, the working medium of high temperature and pressure becomes the steaming of low-temp low-pressure after expander Vapour is continued cycling through by compressor compresses to high-temperature high-pressure state again after vapor-liquid separation, by changing compressor horsepower, is adjusted The inlet temperature and pressure of expanding machine;It can adjust the flow of expanding machine by changing expander inlet control valve opening, to survey Try performance parameter of the expanding machine under various operating conditions.The capital equipment of monitoring system is the multiple groups temperature sensing being arranged in platform Device, pressure sensor and flowmeter etc., data collected are finally transmitted to terminal and show and store.
Compared with prior art, the invention has the following advantages that
(1) present invention can test working characteristics of a variety of working medium under different operating conditions, and system is closed operation, is kept away The waste of working medium in open system is exempted from.
(2) compared with other enclosed test macros, maximum difference is the present invention, and heater is saved in the circulatory system With condenser, avoids heat from heat source and largely taken away by cold source, saved testing cost.
(3) test macro simplifies system structure, saves the same of system investments without containing expensive heater and condenser When, it is also easily installed and repairs.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of the embodiment of the present invention;
It is identified in figure are as follows: 1- starting trouble;The first shut-off valve of 2-;3- low pressure buffer tank;The second shut-off valve of 4-;The first temperature of 5- Spend sensor;6- first pressure sensor;7- first flowmeter;8- compressor;9- second temperature sensor;10- second pressure Sensor;11- high-pressure buffering pot;12- second flowmeter;13- working medium pump;14- third temperature sensor;15- third pressure passes Sensor;16- cooling water pump;17- regulating valve;The 4th temperature sensor of 18-;The 4th pressure sensor of 19-;20- third flowmeter; 21- is tested expanding machine;22- dynamometer machine;23- pressure reducing valve.
Specific embodiment:
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
Energy-saving expander performance testing device of the present invention, it is characterised in that: including activation system, thermodynamic cycle System and monitoring system;
Wherein activation system includes the starting trouble 1 for being in turn connected to form circulation, the first shut-off valve (2), low pressure buffer tank (3) and the second shut-off valve (4);Starting trouble is electrically heated boiler, for working medium is heated to setting temperature at experiment beginning initial stage Degree, can be out of service after temperature reaches setting value;
Circulation system includes the low pressure buffer tank (3) for being in turn connected to form circulation, compressor (8), high-pressure buffering pot (11), regulating valve (17) and tested expanding machine (21), it is other between the low pressure buffer tank (3) and high-pressure buffering pot (11) to be connected to work Matter pumps (13), is connected to dynamometer machine (22) by the tested expanding machine (21);
Monitoring system includes the first flow sensor (7) positioned at compressor (8) arrival end, working medium pump (13) arrival end Second flow sensor (12), is tested the third flow sensor (20) of expanding machine (21) arrival end, and tested expanding machine (2) 1 goes out First temperature sensor (5) and first pressure sensor (6) at mouthful end, compressor (8) outlet end second temperature sensor (9) and Second pressure sensor (10), the third temperature sensor (14) and third pressure sensor (15) of working medium pump (13) outlet end, And the 4th temperature sensor (18) and the 4th pressure sensor (19) of tested expanding machine (21) arrival end.
Further, also other between above-mentioned low pressure buffer tank (3) and high-pressure buffering pot (11) to be connected to pressure reducing valve (23), it is described High-pressure buffering pot (11) is also connected with a cooling water pump.
The working method of the energy-saving expander performance testing device of the present invention,
When the device starts, it is first turned on the first shut-off valve (2) and the second shut-off valve (4), is run starting trouble (1);It opens The built-in water pump of dynamic boiler (1) squeezes into the working-medium water in low pressure buffer tank (3) in starting trouble (1), and working medium is in starting trouble (1) enter in low pressure buffer tank (3) after endothermic temperature increases in, be then again introduced into starting trouble (1) circulation heat absorption;To low pressure Working medium in surge tank (3) reaches 1.0MPa, at 179.9 DEG C, opens compressor (8), by what is isolated in low pressure buffer tank (3) High-pressure buffering pot (11) are sent into after both vapor compression to 2.5MPa;It opens regulating valve (17), working substance steam enters tested expanding machine (21) expansion work is carried out, by parameters such as output power, the torques of dynamometer machine (22) measurement expanding machine (21);It is weary after finishing function Vapour returns to low pressure buffer tank (3), if organic working medium is wet working medium, the steam exhaust after expansion is liquid-vapor mixture, and working medium is in low pressure In surge tank (3) after steam-water separation, the saturated vapor (1.0MPa, 179.9 DEG C) separated be again introduced into compressor (8) after Continuous circulation;Compressor (8) exit working medium is superheated steam (2.5MPa, 313.1 DEG C), and when operating normally, high-pressure buffering pot It (11) is saturation state in, therefore, extra heat is taken away by the cooling water that cooling water pump (16) is squeezed into;When normal operation, quilt It surveys the saturated solution that the moist steam that expanding machine (21) are sent into low pressure buffer tank (3) is isolated and stays in low pressure buffer tank (3) and can make It obtains its liquefaction constantly to increase, in order to maintain the liquid level equilibrium in low pressure buffer tank (3) and high-pressure buffering pot (11), working medium pump (13) It is sent into high-pressure buffering pot (11) (2.5MPa) after the low pressure in low pressure buffer tank (3) being saturated to working medium (1MPa) pressurization;Subtract Pipeline where pressure valve (23) is bypass duct, working medium when being tested expanding machine (21) failure, in high-pressure buffering pot (11) Enter low pressure buffer tank (3) after being depressured by pressure reducing valve (23);
The temperature and pressure of tested expanding machine (21) outlet is by the first temperature sensor (5) and first pressure sensor (6) It is monitored.The temperature and pressure of compressor (8) outlet is carried out by second temperature sensor (9) and second pressure sensor (10) Monitoring.The temperature and pressure of working medium pump (13) outlet is supervised by third temperature sensor (14) and third pressure sensor (15) It surveys.The temperature and pressure of tested expanding machine (21) entrance is carried out by the 4th temperature sensor (18) and the 4th pressure sensor (19) Monitoring;
The flow of compressor (8) entrance is monitored by first flow sensor (7).The flow of working medium pump (13) entrance by Second flow sensor (12) is monitored.The flow of tested expanding machine (21) entrance is supervised by third flow sensor (20) It surveys.
For apparatus of the present invention when operating normally, the working medium of high temperature and pressure becomes the steaming of low-temp low-pressure after expander Vapour is continued cycling through by compressor compresses to high-temperature high-pressure state again after vapor-liquid separation, by changing compressor horsepower, is adjusted The inlet temperature and pressure of expanding machine;It can adjust the flow of expanding machine by changing expander inlet control valve opening, to survey Try performance parameter of the expanding machine under various operating conditions.The capital equipment of monitoring system is the multiple groups temperature sensing being arranged in platform Device, pressure sensor and flowmeter etc., data collected are finally transmitted to terminal and show and store.
If the flow of tested expanding machine is 13t/h when the present invention operates normally, compressor wasted work is 908.2kW, working medium Total wasted work of pump and cooling water pump is 2.4 kW, and total system power consumption is 910.6 kW, and commercial power price is in terms of 0.8 yuan/degree Calculate, when normal operation per hour needed for the electricity charge be 728.5 yuan.Compared with the operating system of traditional rankine cycle, expander inlet And in the identical situation of discharge state, diesel consumption required per hour is when using boiler efficiency as 0.8 oil burning boiler 0.8239 ton, diesel-fuel price is calculated with 6500 yuan/ton, then it is 5355.4 yuan that fuel oil hourly, which expends, the fuel of two kinds of systems Power cost difference is huge.This is mainly due to expander outlet exhaust temperature and pressure are higher, boiler in traditional rankine cycle The thermal energy that fuel combustion is discharged only has about 4.7% conversion for output work, and the cooled water of remaining energy is taken away, caused The huge waste of the energy.
The present invention is illustrated by working medium of water, but working medium is not limited to water, organic working medium and other low boiling working fluids etc. It can be used as working medium of the invention.
Present invention omits the boilers and condenser in traditional rankine cycle, to guarantee to be tested the normal operation of expanding machine, Saturated vapor and saturated water that the liquid-vapor mixture that expanding machine is discharged is isolated are pressurized to by expansion using compressor and pump again Machine inlet condition.
Present system structure is simple, reasonable utilization of energy, the cost of investment for the equipment not only saved, while having saved and being The operating cost of system.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with Modification, is all covered by the present invention.

Claims (1)

1. a kind of working method of energy-saving expander performance testing device, it is characterised in that: energy-saving expander performance testing Device includes activation system, circulation system and monitoring system;Wherein activation system includes being in turn connected to form circulation Starting trouble (1), the first shut-off valve (2), low pressure buffer tank (3) and the second shut-off valve (4);Starting trouble is electrically heated boiler, It is that working medium is heated to set temperature at experiment beginning initial stage, can be out of service after temperature reaches setting value;
Circulation system include the low pressure buffer tank (3) for being in turn connected to form circulation, compressor (8), high-pressure buffering pot (11), Regulating valve (17) and tested expanding machine (21), it is other between the low pressure buffer tank (3) and high-pressure buffering pot (11) to be connected to working medium pump (13), dynamometer machine (22) are connected to by the tested expanding machine (21);
Monitoring system includes the first flow sensor (7) positioned at compressor (8) arrival end, and the second of working medium pump (13) arrival end Flow sensor (12) is tested the third flow sensor (20) of expanding machine (21) arrival end, is tested expanding machine (21) outlet end The first temperature sensor (5) and first pressure sensor (6), compressor (8) outlet end second temperature sensor (9) and second Pressure sensor (10), the third temperature sensor (14) and third pressure sensor (15) of working medium pump (13) outlet end, and 4th temperature sensor (18) and the 4th pressure sensor (19) of tested expanding machine (21) arrival end;The low pressure buffer tank (3) also other between high-pressure buffering pot (11) to be connected to pressure reducing valve (23), the high-pressure buffering pot (11) is also connected with a cooling water It pumps (16);
It is illustrated by working medium of water: when the device starts, being first turned on the first shut-off valve (2) and the second shut-off valve (4), run Starting trouble (1);The built-in water pump of starting trouble (1) squeezes into the working medium in low pressure buffer tank (3) in starting trouble (1), work Matter enters in low pressure buffer tank (3) after endothermic temperature increases in starting trouble (1), is then again introduced into starting trouble (1) and follows Ring heat absorption;Reach 1.0MPa to the working medium in low pressure buffer tank (3), at 179.9 DEG C, opens compressor (8), by low pressure buffer tank (3) high-pressure buffering pot (11) are sent into after the both vapor compression to 2.5MPa isolated in;It opens regulating valve (17), working substance steam enters Tested expanding machine (21) carry out expansion work, by parameters such as output power, the torques of dynamometer machine (22) measurement expanding machine (21);It does Steam exhaust after complete function returns to low pressure buffer tank (3), if working medium is wet working medium, the steam exhaust after expansion is liquid-vapor mixture, work Matter after steam-water separation, separates 1.0MPa, 179.9 DEG C of saturated vapor is again introduced into compression in low pressure buffer tank (3) Machine (8) continues cycling through;Compressor (8) exit working medium is 2.5MPa, 313.1 DEG C of superheated steams, and when operating normally, high pressure It is saturation state in surge tank (11), therefore, extra heat is taken away by the cooling water that cooling water pump (16) is squeezed into;It operates normally When, the saturated solution that the moist steam that tested expanding machine (21) are sent into low pressure buffer tank (3) is isolated stays in low pressure buffer tank (3) Meeting is so that its liquefaction constantly increases, in order to maintain the liquid level equilibrium in low pressure buffer tank (3) and high-pressure buffering pot (11), working medium pump (13) it is sent into 2.5MPa high-pressure buffering pot (11) after the 1MPa low pressure in low pressure buffer tank (3) being saturated to working medium pressurization;Subtract Pipeline where pressure valve (23) is bypass duct, working medium when being tested expanding machine (21) failure, in high-pressure buffering pot (11) Enter low pressure buffer tank (3) after being depressured by pressure reducing valve (23);
The temperature and pressure of tested expanding machine (21) outlet is carried out by the first temperature sensor (5) and first pressure sensor (6) The temperature and pressure of monitoring, compressor (8) outlet is supervised by second temperature sensor (9) and second pressure sensor (10) It surveys, the temperature and pressure of working medium pump (13) outlet is supervised by third temperature sensor (14) and third pressure sensor (15) It surveys, the temperature and pressure for being tested expanding machine (21) entrance is carried out by the 4th temperature sensor (18) and the 4th pressure sensor (19) Monitoring;
The flow of compressor (8) entrance is monitored by first flow sensor (7), and the flow of working medium pump (13) entrance is by second Flow sensor (12) is monitored, and the flow of tested expanding machine (21) entrance is monitored by third flow sensor (20).
CN201710401834.7A 2017-06-01 2017-06-01 Energy-saving expander performance testing device and its working method Expired - Fee Related CN107063693B (en)

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CN112412769B (en) * 2020-11-30 2022-08-16 青岛万宝压缩机有限公司 Compressor noise vibration testing system and method
CN113250947B (en) * 2021-05-20 2022-02-08 势加透博洁净动力如皋有限公司 Fuel cell air compressor durability test system and method

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