CN218330598U - Performance testing device for combined air intake filter of gas turbine - Google Patents
Performance testing device for combined air intake filter of gas turbine Download PDFInfo
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- CN218330598U CN218330598U CN202221991939.5U CN202221991939U CN218330598U CN 218330598 U CN218330598 U CN 218330598U CN 202221991939 U CN202221991939 U CN 202221991939U CN 218330598 U CN218330598 U CN 218330598U
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Abstract
The utility model discloses a performance testing device of a gas turbine combined type air intake filter, which comprises a testing pipeline, wherein the testing pipeline comprises an air intake chamber, a static filtering chamber, a dynamic filtering chamber, a pulse back-blowing chamber, a flow testing chamber and a fan chamber in sequence according to the air flowing direction; the air inlet chamber is internally provided with a humidifier, a dust generator and an aerosol generator, the static filter chamber is provided with a static filter, an upstream particle counter is arranged at the inlet of the static filter chamber, the dynamic filter chamber is provided with a dynamic filter, a midstream particle counter is arranged at the inlet of the dynamic filter chamber, the pulse back blowing chamber is internally provided with an airflow diffuser, a downstream particle counter and a high-efficiency filter, the blowing direction of the airflow diffuser is parallel to the air inlet direction, the high-efficiency filter is arranged at the outlet of the pulse back blowing chamber, a flowmeter is arranged in the flow test chamber, and the fan chamber is provided with an induced draft fan. The utility model is used for resistance performance, hold the test of performance parameters such as dirt performance, humidity resistance, filtering capability.
Description
Technical Field
The utility model relates to a gas turbine filtration technical field that admits air, concretely relates to gas turbine combination formula air intake filter capability test device.
Background
At present, the gas turbine power plant in China generally moves the design experience of foreign gas turbine OEM host manufacturers and gas inlet filter system manufacturers, and an air inlet system adopts a single-side or multi-side air inlet horizontal arrangement mode of different filter configuration combinations; the filtering precision of each filter is calculated through the configuration of the filtering grade of each filter of the gas turbine air inlet system, on the basis of ensuring the safety and the economic performance of a unit, the fine filtering is scientifically guided to prolong more service time on the existing basis, the maintenance cost and the replacement cost of the air inlet system are saved, the consumption of consumables is reduced, and the method has remarkable economic, social and environmental benefits. However, each power plant is trying to prolong the service time of the filter element gradually, but the reliability and rationality of the configuration of the air inlet system are not analyzed through calculation and experimental science.
The current air inlet filtering system adopts a multi-stage configuration combination mode with different filtering grades and types, and in order to protect fine filtering, a primary bag type rough filtering is generally arranged before the fine filtering, and the rough filtering generally has the characteristics and the defects of low air inlet resistance, low filtering efficiency, low dust holding capacity, low structural strength and the like; because the dust holding capacity is small, the resistance is increased quickly, and a power plant needs to be replaced frequently to maintain the lower filtration pressure difference and protect fine filtration, so that certain time cost and economic cost loss are brought to production and operation.
SUMMERY OF THE UTILITY MODEL
For solving the above-mentioned problem that exists among the prior art, the utility model provides a gas turbine combination formula air intake filter capability test device.
The utility model discloses a performance testing device of a combined air intake filter of a gas turbine, which comprises a testing pipeline, wherein the testing pipeline comprises an air inlet chamber, a static filtering chamber, a dynamic filtering chamber, a pulse back-blowing chamber, a flow testing chamber and a fan chamber which are sequentially communicated with each other according to the air flowing direction;
wherein, be equipped with humidifier, dust generator and aerosol generator in the air inlet chamber, static filter chamber is equipped with static filter and is in static filter chamber entrance is equipped with upstream particle counter, dynamic filter chamber is equipped with dynamic filter just dynamic filter chamber entrance is equipped with well trip particle counter, be equipped with air current diffuser, low reaches particle counter and high efficiency filter in the pulse blowback chamber, the parallel air inlet direction that is just to of blowing direction of air current diffuser, high efficiency filter locates the export of pulse blowback chamber, be equipped with the flowmeter in the flow test room, the fan room is equipped with the draught fan.
Preferably, the air inlet chamber and the pulse back blowing chamber are both provided with pressure, temperature and humidity sensors.
Preferably, the pressure, temperature and humidity sensors are all arranged on the inner wall of the test pipeline.
Preferably, the upstream particle counter, the midstream particle counter and the downstream particle counter are all optical particle counters.
Preferably, the upstream particle counter, the midstream particle counter and the downstream particle counter are all arranged at the central position of the test pipeline, and an airflow inlet of the sampling head is parallel to and opposite to the air inlet direction.
Preferably, the height of the air inlet chamber is greater than the height of the static filter chamber, the height of the dynamic filter chamber, the height of the pulse back-blowing chamber, the height of the flow test chamber and the height of the fan chamber.
The utility model also provides a testing method of above-mentioned combustion engine combination formula air intake filter capability test device, include:
presetting the air inlet flow of a test experiment;
starting a draught fan, and enabling air to enter an air inlet chamber;
correspondingly starting a humidifier, a dust generator or/and an aerosol generator arranged in the air inlet chamber according to the performance test of the test experiment;
under the action of the induced draft fan, the air passes through the static filter chamber, the dynamic filter chamber, the pulse back-blowing chamber and the flow test chamber in sequence and is finally discharged through the fan chamber;
in the process, air parameters before and after the test are monitored and collected, and corresponding performance is obtained according to sampling parameters.
Preferably, the test method comprises a resistance performance test, a filtering performance test, a dust holding performance and blowback recovery performance test and a humidity resistance performance test.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model is used for the performance parameter tests of the resistance performance, dust holding performance, back-blowing recovery performance, moisture resistance performance, filtering performance and the like of the combined air inlet filter, and the performance evaluation of each unit and the whole filtering system in the combined filtering device; and the temperature, humidity, water content and dust concentration of the test air can be adjusted, and a method can be provided for evaluating and selecting the performance of the air inlet filter for a gas turbine user according to the actual air inlet environment or extreme conditions of the unit.
Drawings
Fig. 1 is a schematic structural diagram of the performance testing device of the combined air intake filter of the gas turbine of the present invention;
fig. 2 is the resistance changes along with the dust feeding amount in the performance testing device of the combined air intake filter of the gas turbine.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the utility model provides a gas turbine combined air intake filter performance testing device, which comprises a testing pipeline, wherein the testing pipeline comprises an air inlet chamber A, a static filter chamber B, a dynamic filter chamber C, a pulse back-blowing chamber D, a flow testing chamber E and a fan chamber F which are sequentially communicated with each other according to the air flowing direction;
specifically, this test pipeline can be integrated into one piece, also can be through each pipeline interconnect, if interconnect, then through pneumatic bolt locking between every room and be equipped with the sealing washer between and seal.
Further, a humidifier 1, a dust generator and an aerosol generator 2 are arranged in the air inlet chamber A, a static filter 5 is arranged in the static filter chamber B, an upstream particle counter 4 is arranged at an inlet of the static filter chamber B, a dynamic filter 8 is arranged in the dynamic filter chamber C, a midstream particle counter 6 is arranged at an inlet of the dynamic filter chamber C, an airflow scatterer 9, a downstream particle counter 11 and a high efficiency filter 12 are arranged in the pulse back blowing chamber D, the blowing direction of the airflow scatterer 9 is parallel to and opposite to the air inlet direction, the high efficiency filter 12 is arranged at an outlet of the pulse back blowing chamber D, a flow meter 13 is arranged in the flow test chamber E, and a draught fan 14 is arranged in the fan chamber F.
Furthermore, pressure, temperature and humidity sensors are arranged in the air inlet chamber A and the pulse back blowing chamber D. The pressure, temperature and humidity sensors are shown as 3, 7 and 10, which are located in different chambers. The pressure, temperature and humidity sensors are all arranged on the inner wall of the test pipeline; for the accuracy of measurement, each measuring point is provided with a plurality of parallel static pressure measuring ports which are uniformly distributed along the periphery of the wall surface. The material of each tube section should be electrically conductive and grounded and have sufficient strength to ensure that it does not deform under operating pressure. For the convenience of observation, the filter segment is made of transparent glass material.
In the present embodiment, the filter concerned is a filter bag or a plate and frame filter. The upstream particle counter 4, the midstream particle counter 6 and the downstream particle counter 11 are all optical particle counters. The upstream particle counter 4, the midstream particle counter 6 and the downstream particle counter 11 are all arranged at the central position of the test pipeline, and the airflow inlet of the sampling head is parallel to and opposite to the air inlet direction. The airflow diffuser 9 can adopt 0.6 MPa-0.7 MPa pulse compressed air to blow the dynamic filter chamber C, and the blowing direction of the airflow diffuser 9 is parallel to and opposite to the air inlet direction. The controllable flow of the induced draft fan 14 is 0-5000m 3 /h。
Further, the height of the air inlet chamber A is larger than that of the static filter chamber B, the dynamic filter chamber C, the pulse back blowing chamber D, the flow test chamber E and the fan chamber F. This arrangement facilitates air entry.
The utility model also provides a testing method of above-mentioned combustion engine combination formula air intake filter capability test device, include:
presetting the air inlet flow of a test experiment;
starting the induced draft fan 14, and allowing air to enter the air inlet chamber A;
according to the performance test of the test experiment, a humidifier 1, a dust generator or/and an aerosol generator 2 which are/is arranged in the air inlet chamber A are/is correspondingly started;
under the action of an induced draft fan 14, air passes through a static filter chamber B, a dynamic filter chamber C, a pulse back flushing chamber D and a flow test chamber E in sequence, and is finally discharged through a fan chamber F;
in the process, air parameters before and after the test are monitored and collected, and corresponding performance is obtained according to sampling parameters.
Example 1
Resistance performance test
And calculating the rated air volume flowing through each set of filter device according to the air inlet flow of the combustion engine and the number of filters in the air inlet system under the ISO working condition. Adjusting the air volume of a draught fan 14 in the device to a rated air volume, controlling the temperature and humidity of inlet air to ISO working conditions, recording the initial resistance values of the static filter 5, the dynamic filter 8 and the whole device under the rated air volume, wherein the initial resistance values are P 1 、P 2 And P 3 . Meanwhile, the temperature and humidity of the inlet air can be adjusted according to the actual air inlet environment of the combustion engine, and the resistance of the filter can be tested.
Example 2
Filter performance test
DEHS (dioctyl sebacate aerosol droplets) was used in the efficiency measurement of the filters, with a controlled particle size range of 0.2 μm to 3.0. Mu.m. At nominal inlet air flow, the aerosol generator 2 controls the injection of a sufficient concentration of DEHS.
The particle size of 0.4um is tested according to the quality control requirement of the air inlet of the main engine of the combustion engine. The static and dynamic filters 8 and the combined filtration efficiency are calculated as E j 、E d And E t ：
In the formula: n is a radical of 1 Counting the upstream particles; n is a radical of 2 Counting the number of particles in the midstream; n is a radical of 3 Count the downstream particles.
Example 3
Dust holding performance and blowback recovery performance test
The dust holding performance test was performed using the aerosol generator 2. A compressed air ejector and a dust generator are connected into the aerosol generator 2, the ejector blows away dust in the dust generator by using compressed air, and the dust is directly injected into the air inlet chamber A through a generator dust feeding pipe. The concentration of the selected superfine artificial dust in the test is 35mg/m 3 . And (3) measuring the resistance and efficiency changes of the static and dynamic filter chamber C and the whole test pipeline at no less than 5 state points in the dust holding stage along with the gradual accumulation of artificial dust on the filter. The test was terminated when the total test line resistance increased to 450P.
During testing, artificial dust is sent to the tested filter at a constant speed, the air inlet temperature and humidity can be adjusted according to the actual air inlet environment of the combustion engine, and the dust containing amount, resistance and efficiency changes of the filter at different dust containing stages under different air inlet temperature and humidity are tested.
If the back-blowing restoration performance needs to be tested and evaluated, after the resistance of the filter in the dust holding stage is increased to the final resistance of 450Pa, the airflow diffuser 9 is started, and the cylinder type filter is back-blown by using the pulse compressed air with the adjustable pressure range of 0.4Mpa-0.6 Mpa. The change conditions of the resistance and the efficiency of the filter under certain pulse frequency and back flushing time are measured.
Example 4
Moisture resistance test
The air humidity and the water content of the air entering the air inlet chamber A are controlled by the spray humidifier 1, the change condition of the resistance of the filter with time under the air with high humidity and specific water content is tested, and meanwhile, the performance changes of the filter, such as the filtering efficiency, dust containing performance and the like, of the filter under the high humidity can be tested. The values of the air humidity and the water content are determined according to the actual air inlet environment of the combustion engine on an ocean platform, along the sea or in rain seasons and the like.
Example 5
Assessment of energy efficiency
The energy consumption of the test pipeline is a function of volumetric air flow, fan efficiency, run time and average resistance. And during operation, the resistance of the test pipeline is increased along with dust holding, and the energy consumption of the combined air inlet filter is calculated by using the resistance integral average value of the test time period. The energy efficiency formula is as follows:
wherein, W is energy consumption, kWh; specifying q v The unit volume air quantity is 0.944m 3 And/s, t is annual running time, 6000h is taken, eta is fan efficiency, 50 percent is taken,
is the combined intake air filter average resistance, pa.
During dust holding performance testing, no less than 5 data points are on the resistance curve. Using a 4 th order polynomial Δ p = a · m 4 +b·m 3 +c·m 2 +d·m+Δp i Fitting a resistance curve, wherein a, b, c, d are constants, Δ p i Is the air quantity q v ＝3 400m 3 /h＝0.944m 3 Initial resistance of clean filter at/s. The average resistance was calculated using the following formula:
wherein a, b, c and d are constants in a 4-degree polynomial used for fitting a resistance curve; m x Is a specified amount of loaded dust to simulate a one year filter operation. Combined filter for fuel-fired machine, taking M F =100g. And calculating the annual energy consumption W of the filter under the rated air flow.
The actual energy consumption = standard energy consumption (actual air volume/standard air volume) (initial resistance under actual air volume/initial resistance under standard air volume) of the gas turbine intake air filtering system. Through the test evaluation test and the test result, the resistance performance, the filtration efficiency, the dust holding performance, the moisture resistance performance and the annual energy consumption value of different filter type combination configurations of the gas turbine in the actual operation environment of the gas turbine can be evaluated, and a scientific method can be provided for selecting filters and different configuration combinations of a gas turbine power plant.
Specifically, the test air volume 3400m 3 The test filter performance is shown in Table 1.
TABLE 1
Resistance as a function of ASHRAE dust loading test data are shown in table 2.
TABLE 2
At 3400m, according to the data in Table 2 3 Initial resistance at/h
The fitted curve is shown in fig. 2. The constants in each are:
a＝-1.246426·10 -9 Pa/g 4 ；b＝-5.871401·10 -8 Pa/g 3 ；
c＝1.166031·10 -3 Pa/g 2 ；d＝0.2879301Pa/g；
when M is x ＝M f =100g, average resistance
The annual energy consumption W =1074kWh is obtained.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A performance testing device for a combined air intake filter of a gas turbine is characterized by comprising a testing pipeline, wherein the testing pipeline comprises an air inlet chamber, a static filtering chamber, a dynamic filtering chamber, a pulse back-blowing chamber, a flow testing chamber and a fan chamber which are sequentially communicated with one another according to the air flowing direction;
wherein, be equipped with humidifier, dust generator and aerosol generator in the air inlet chamber, static filter chamber is equipped with static filter and is in static filter chamber entrance is equipped with upstream particle counter, dynamic filter chamber is equipped with dynamic filter just dynamic filter chamber entrance is equipped with well trip particle counter, indoor air current diffuser, low reaches particle counter and the high efficiency filter of being equipped with of pulse blowback, the blowing direction parallel of air current diffuser is just to the air inlet direction, high efficiency filter locates the export of pulse blowback chamber, be equipped with the flowmeter in the flow test room, the fan room is equipped with the draught fan.
2. The device for testing the performance of the combined type air intake filter of the gas turbine as claimed in claim 1, wherein pressure, temperature and humidity sensors are arranged in the air intake chamber and the pulse back-blowing chamber.
3. The device for testing the performance of the combined type air intake filter of the combustion engine as claimed in claim 2, wherein the pressure sensor, the temperature sensor and the humidity sensor are arranged on the inner wall of the test pipeline.
4. The combined air intake filter performance testing device for the combustion engine as claimed in claim 1, wherein the upstream particle counter, the midstream particle counter and the downstream particle counter are all optical particle counters.
5. The combined air intake filter performance testing device for the combustion engine as claimed in claim 4, wherein the upstream particle counter, the midstream particle counter and the downstream particle counter are all arranged at the central position of the testing pipeline, and an airflow inlet of the sampling head is parallel to and opposite to an air intake direction.
6. The combined air intake filter performance testing device of the gas turbine as claimed in claim 1, wherein the height of the intake chamber is greater than the height of the static filter chamber, the dynamic filter chamber, the pulse back-blowing chamber, the flow test chamber and the fan chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221991939.5U CN218330598U (en) | 2022-08-01 | 2022-08-01 | Performance testing device for combined air intake filter of gas turbine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221991939.5U CN218330598U (en) | 2022-08-01 | 2022-08-01 | Performance testing device for combined air intake filter of gas turbine |
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| CN202221991939.5U Active CN218330598U (en) | 2022-08-01 | 2022-08-01 | Performance testing device for combined air intake filter of gas turbine |
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