CN114414224B

CN114414224B - Diesel combustion device for supercharger test bed

Info

Publication number: CN114414224B
Application number: CN202111603611.1A
Authority: CN
Inventors: 李欣; 吉建波; 马磊; 辛鸿; 宋志伟
Original assignee: China North Engine Research Institute Tianjin
Current assignee: China North Engine Research Institute Tianjin
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2023-08-18
Anticipated expiration: 2041-12-24
Also published as: CN114414224A

Abstract

The invention provides a diesel combustion device for a booster test bed, which is characterized in that the inside of a diesel combustor is communicated to an oil tank through a first pipeline, one end of the diesel combustor is provided with an air pipeline, the other end of the diesel combustor is communicated to the vortex end of the booster of the test bed through a second pipeline, a first pressure transmitter and a first thermocouple are arranged in the second pipeline, an oil outlet pipeline and an oil inlet pipeline are respectively arranged on the oil tank, a liquid level meter is arranged in the oil tank, one end of the oil outlet pipeline is provided with an overflow valve, the first end of the overflow valve is fixedly connected to one end of the first pipeline, the second end of the overflow valve is communicated to the oil tank through a third pipeline, and a first electric regulating valve is arranged on the third pipeline. The diesel combustion device for the supercharger test bed can realize automatic accurate control and rapid feedback adjustment, ensure the stable operation of the test bed and ensure complete and reliable experimental data.

Description

Diesel combustion device for supercharger test bed

Technical Field

The invention belongs to the technical field of engines, and particularly relates to a diesel combustion device for a supercharger test bed.

Background

At present, most of the engine supercharger test bed adopts a gas combustion device, a fuel oil combustion device and a control system thereof, wherein the fuel oil combustion device and the control system thereof are in a stage of manual or semi-automatic control, and the degree of automation is lower, so that the temperature fluctuation of generated smoke is larger and the reaction is slower, and the reliability of final experimental data is not high and the accuracy is poor.

Disclosure of Invention

In view of the above, the invention aims to provide a diesel combustion device for a supercharger test bed, which aims to solve the problem of poor experimental data reliability of the supercharger test bed of an engine in the prior art.

In order to achieve the above purpose, the technical scheme of the invention is realized as follows:

the utility model provides a diesel combustion device for booster test bench, including oil tank and diesel combustor, diesel combustor is inside to be communicated to the oil tank through first pipeline, diesel combustor's one end sets up air line, diesel combustor's the other end is through the vortex end of second pipeline intercommunication to the test bench booster, and set up first pressure transmitter and first thermocouple in the second pipeline, set up oil outlet pipe way and income oil pipe way respectively on the oil tank, the inside level gauge that sets up of oil outlet pipe way, oil outlet pipe's one end sets up the overflow valve, and overflow valve's first end fixed connection is to the one end of first pipeline, overflow valve's second end is through third pipeline intercommunication to the oil tank, and set up first electric control valve on the third pipeline, first pressure transmitter, first thermocouple, level gauge and first electric control valve signal connection are to the controller respectively, controller signal connection host computer.

Further, go out oil pipe way and include first filter and oil pump, the one end of first filter is through inside first body intercommunication to the oil tank, and sets up first manual valve on the first body, and inside the setting second thermocouple of first body, the first filter other end communicates to the oil pump, and the play oily end of oil pump communicates to the third end of overflow valve through the second body, and sets up the check valve on the second body, oil pump and second thermocouple signal connection to the controller.

Further, the oil inlet pipeline comprises a second filter, the second filter is communicated to the oil tank through a third pipe body, a first electromagnetic valve is arranged on the third pipe body, the second filter is communicated to an external oil storage tank through a fourth pipe body, a manual stop valve is arranged on the fourth pipe body, and a first electromagnetic valve signal is connected to the controller.

Further, the first pipeline comprises a fifth pipeline body, the first end of the fifth pipeline body is fixedly connected to the first end of the overflow valve, the second end of the fifth pipeline body is fixedly connected to the side wall of the diesel combustor, the second end of the fifth pipeline body is provided with an ignition electromagnetic valve, the fifth pipeline body is provided with a first mass flowmeter, a second pressure transmitter and a second manual valve respectively, the first mass flowmeter and the second manual valve are located on two sides of the second pressure transmitter respectively, and the ignition electromagnetic valve, the first mass flowmeter and the second pressure transmitter are connected to the controller respectively in a signal mode.

Further, the air pipeline comprises a sixth pipe body and a seventh pipe body, wherein the sixth pipe body and the seventh pipe body are respectively arranged at two ends of the sixth pipe body, one end of the sixth pipe body is fixedly connected to the air compressor, a low-pressure switch is arranged on the sixth pipe body, one end of the seventh pipe body is fixedly connected to one end of the diesel combustor, a second mass flowmeter, a third pressure transmitter and a third manual valve are respectively arranged on the seventh pipe body, the second mass flowmeter and the third manual valve are respectively positioned at two sides of the third pressure transmitter, a third thermocouple is arranged in the seventh pipe body, and the third thermocouple, the second mass flowmeter, the third pressure transmitter and the low-pressure switch are respectively connected to the controller in a signal mode.

Further, the air pipeline further comprises an electric valve, one end of the electric valve is communicated to the sixth pipe body through the eighth pipe body, the other end of the electric valve is communicated to the seventh pipe body through the ninth pipe body, the inlet end of the eighth pipe body is located between the low-voltage switch and the main path regulating valve, the outlet end of the ninth pipe body is located between the main path regulating valve and the second mass flowmeter, and the electric valve is connected to the controller through signals.

Compared with the prior art, the diesel combustion device for the supercharger test stand has the following beneficial effects: when parameters such as flue gas temperature and pressure generated by the diesel combustion device change, the control system can automatically adjust the flow and pressure of combustion air and diesel according to the database and the change trend of the temperature and the pressure, so as to quickly stabilize the temperature and the pressure of the flue gas, realize automatic precise control and quick feedback adjustment, ensure the stable operation of the test bed and ensure complete and reliable experimental data.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

fig. 1 is a control schematic diagram of a diesel combustion device for a supercharger test stand according to an embodiment of the present invention.

Reference numerals illustrate:

1-manual stop valve, 2-second filter, 3-first solenoid valve, 4-liquid level meter, 5-oil tank, 6-first manual valve, 7-first filter, 8-second thermocouple, 9-oil pump, 10-check valve, 11-overflow valve, 12-first electric regulating valve, 13-first mass flowmeter, 14-second pressure transmitter, 15-second manual valve, 16-ignition solenoid valve, 17-low pressure switch, 18-main circuit electric regulating valve, 19-electric valve, 20-second mass flowmeter, 21-third pressure transmitter, 22-third manual valve, 23-third thermocouple, 24-diesel burner, 25-first pressure transmitter, 26-first thermocouple, 27-vortex end.

Detailed Description

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.

The invention will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1, a diesel combustion device for a booster test bed comprises an oil tank 5 and a diesel combustor 24, wherein the inside of the diesel combustor 24 is communicated to the oil tank 5 through a first pipeline, one end of the diesel combustor 24 is provided with an air pipeline, the other end of the diesel combustor 24 is communicated to a vortex end 27 of the test bed booster through a second pipeline, a first pressure transmitter 25 and a first thermocouple 26 are arranged in the second pipeline, an oil outlet pipeline and an oil inlet pipeline are respectively arranged on the oil tank 5, a liquid level meter 4 is arranged in the oil tank 5, one end of the oil outlet pipeline is provided with an overflow valve 11, the first end of the overflow valve 11 is fixedly connected to one end of the first pipeline, the second end of the overflow valve 11 is communicated to the oil tank 5 through a third pipeline, a first electric regulating valve 12 is arranged on the third pipeline, the first pressure transmitter 25, the first thermocouple 26, the liquid level meter 4 and the first electric regulating valve 12 are respectively connected to a controller in a signal manner, and the controller is connected to an upper computer in a signal manner, wherein the controller is a PLC in the prior art.

The oil outlet pipeline comprises a first filter 7 and an oil pump 9, one end of the first filter 7 is communicated to the inside of the oil tank 5 through a first pipe body, a first manual valve 6 is arranged on the first pipe body, a second thermocouple 8 is arranged in the first pipe body, the other end of the first filter 7 is communicated to the oil pump 9, the oil outlet end of the oil pump 9 is communicated to the third end of the overflow valve 11 through the second pipe body, a check valve 10 is arranged on the second pipe body, and the oil pump 9 and the second thermocouple 8 are connected to a controller in a signal mode.

The oil inlet pipeline comprises a second filter 2, the second filter 2 is communicated to an oil tank 5 through a third pipe body, a first electromagnetic valve 3 is arranged on the third pipe body, the second filter 2 is communicated to an external oil tank 5 through a fourth pipe body, a manual stop valve 1 is arranged on the fourth pipe body, and the first electromagnetic valve 3 is connected to a controller through a signal.

The first pipeline comprises a fifth pipeline body, a first end of the fifth pipeline body is fixedly connected to a first end of the overflow valve 11, a second end of the fifth pipeline body is fixedly connected to the side wall of the diesel combustor 24, an ignition electromagnetic valve 16 is arranged at a second end of the fifth pipeline body, a first mass flowmeter 13, a second pressure transmitter 14 and a second manual valve 15 are respectively arranged on the fifth pipeline body, the first mass flowmeter 13 and the second manual valve 15 are respectively located on two sides of the second pressure transmitter 14, and the ignition electromagnetic valve 16, the first mass flowmeter 13 and the second pressure transmitter 14 are respectively connected to a controller in a signal mode.

The air pipeline comprises a main flow electric regulating valve and a sixth pipe body and a seventh pipe body, wherein the two ends of the main flow electric regulating valve are respectively provided with a sixth pipe body, one end of the sixth pipe body is fixedly connected to an air compressor, the sixth pipe body is provided with a low-pressure switch 17, one end of the seventh pipe body is fixedly connected to one end of a diesel combustor 24, the seventh pipe body is respectively provided with a second mass flowmeter 20, a third pressure transmitter 21 and a third manual valve 22, the second mass flowmeter 20 and the third manual valve 22 are respectively positioned on two sides of the third pressure transmitter 21, the inside of the seventh pipe body is provided with a third thermocouple 23, and the third thermocouple 23, the second mass flowmeter 20, the third pressure transmitter 21 and the low-pressure switch 17 are respectively connected to a controller in a signal mode.

The air pipeline still includes motorised valve 19, and the one end of motorised valve 19 is through eighth body intercommunication to the sixth body, and the other end of motorised valve 19 is through ninth body intercommunication to the seventh body, and the entrance point of eighth body is located between low-voltage switch 17 and the main way governing valve, and the exit end of ninth body is located between the main way governing valve and between second mass flowmeter 20, motorised valve 19 signal connection to the controller.

The diesel combustor 24 is the prior art, and the diesel combustor 24 mixes the high-pressure diesel oil after atomizing with the combustion air of high pressure and burns completely, and burns evenly to control the high temperature combustion area in the combustion chamber, set up the combustion product detecting system in the second pipeline, the combustion product detecting system is the product after diesel oil and air combustion and carries combustion product medium pipe line system from the diesel combustor 24, and the combustion product detecting system contains temperature measurement point and 1 pressure measurement point, and the temperature of same cross-section three position can be measured to 3 temperature measurement points. The PLC control system is informed of adjusting the input flow of diesel oil and combustion air through the two measured values.

When the measured values of the temperature and the pressure of the combustion products deviate from the set values, the PLC control program combines the database data to quickly adjust the input flow of the diesel oil and the combustion air in a first time orientation, and meanwhile, the database has the function of automatically increasing and perfecting the data along with the increase of the experiment times.

The HMI upper computer can display all relevant states of the equipment, including the temperature, pressure and mass flow of the fuel supply system and the combustion air supply system, the state of the diesel burner 24 is displayed, the temperature and pressure of the combustion medium are displayed, and the equipment has a history data storage and inquiry function and an automatic classification and comparison function of the same-category experimental data.

The using process of the diesel combustion device for the supercharger test bed comprises the following steps:

when the test starts, the worker opens the manual stop valve 1 on the diesel oil pipeline and the first manual valve 6 with position feedback in front of the oil pump 9, starts the oil pump 9, and observes from the upper computer display system whether the temperature (temperature information is provided by the second thermocouple 8), the pressure (pressure information is provided by the second pressure transmitter 14), the temperature (temperature information is provided by the third thermocouple 23) and the pressure (pressure information is provided by the third pressure transmitter 21) of the diesel oil are normal, and whether the low-pressure switch 17 has an alarm signal. If the liquid level meter 4 in the oil tank 5 provides liquid level information for the controller, if the liquid level is lower than a set value, the controller controls the first electromagnetic valve 3 to open oil supply, and when the liquid level reaches the set value, the controller closes the first electromagnetic valve 3. The second pressure transmitter 14 outputs oil pressure information to the controller in real time, such as the oil pressure overpressure at the outlet of the oil pump 9, the controller controls the overflow valve 11 to be conducted, diesel oil flows back to the oil tank 5 from the overflow valve 11, and the check valve 10 prevents the diesel oil from flowing back to the oil pump 9.

The second manual valve 15 at the outlet of the diesel valve station is kept in a normally open state; when the oil pressure reaches the set value, the ignition button is clicked, the ignition solenoid valve 16 is opened, and diesel oil and combustion air are mixed and burned in the diesel combustor 24. The generated combustion medium is conveyed to the vortex end 27 of the test bed booster through a pipeline, and the temperature (temperature information is provided by the first thermocouple 26) and the pressure (pressure information is provided by the first pressure transmitter 25) of the combustion medium can be checked on the upper computer. The PLC sets the pressure and the temperature required by the combustion medium according to a test preset by a worker, adjusts a frequency converter of the oil pump 9, controls the flow output of the oil pump 9, simultaneously adjusts the opening of the first electric regulating valve 12, and stabilizes the flow of diesel oil (the information is provided by the first mass flowmeter 13) through the cooperation of the two; the combustion air main circuit electric regulating valve 18 is regulated successively to stabilize the flow rate of the combustion air (information provided by the second mass flowmeter 20).

After successful ignition, the upper computer displays successful ignition according to the on-site flame monitoring system, the test bench booster test control console automatically transmits data to the PLC and displays the data on the upper computer, after the data is confirmed, the staff clicks the test data, the PLC adjusts the flow pressure of combustion air and diesel according to the set parameters, so that the combustion products reach set parameter values, in order to quickly reach the set values, the database control is added, the flow of the combustion air and the diesel can be quickly adjusted to empirical value points according to the data in the database, and then fine adjustment is performed according to actual monitoring data, so that the control efficiency is greatly improved, and fluctuation of outlet combustion products is reduced.

When a group of tests are finished, the requirements of combustion products with different parameters are required to be replaced or the requirements of the combustion products are required to be changed for a plurality of times in one test, and after various parameters (pressure and temperature) of the required combustion products are changed by a test bed booster test control bed, the above actions are repeated.

When unexpected fluctuation of combustion product parameters exceeds a certain time in the test process, the control system rapidly adjusts the supply pressure and flow of combustion air or diesel oil according to the variation trend of the combustion products, rapidly stabilizes the combustion product parameters, and ensures that the test is minimally influenced.

If the temperature of the flue gas exceeds the set value 750 ℃ plus or minus ℃ for 3 seconds, the PLC program can call database data according to the size unit of the exceeding value, quickly adjust the flow of the combustion air valve or the oil pump 9 and the oil supply loop adjusting valve, and can reach the temperature of the flue gas to be stabilized below 755 ℃ within 20 seconds; when the temperature of the diesel oil for combustion changes and is reduced to 10 ℃ from normal temperature (20 ℃), after the temperature is reduced to 17 ℃ and the continuous reducing trend reaches 3 seconds, database data are acquired, and the flow is regulated by quickly regulating a combustion air valve or an oil pump 9 and an oil supply loop regulating valve, so that the temperature and the pressure of the flue gas are not influenced basically.

After the test is finished, the combustion device is clicked to be closed, the combustion system is automatically closed, all pipeline equipment displays normally, and the manual stop valve 1 on the diesel pipeline is closed after no alarm information exists. And the database can automatically perfect the recorded data. This patent system has realized the intelligent automated control of diesel oil burning, compares with traditional test bench control system, and this system can be according to the change of operating mode condition, based on database data, quick adjustment fuel and combustion air's supply realizes the stability of the pressure and the temperature of combustion products.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

1. The utility model provides a diesel oil burner for booster test bench which characterized in that: the device comprises an oil tank (5) and a diesel combustor (24), wherein the inside of the diesel combustor (24) is communicated to the oil tank (5) through a first pipeline, one end of the diesel combustor (24) is provided with an air pipeline, the other end of the diesel combustor (24) is communicated to a vortex end (27) of a test bed booster through a second pipeline, a first pressure transmitter (25) and a first thermocouple (26) are arranged in the second pipeline, an oil outlet pipeline and an oil inlet pipeline are respectively arranged on the oil tank (5), a liquid level meter (4) is arranged in the oil tank (5), one end of the oil outlet pipeline is provided with an overflow valve (11), the first end of the overflow valve (11) is fixedly connected to one end of the first pipeline, the second end of the overflow valve (11) is communicated to the oil tank (5) through a third pipeline, the third pipeline is provided with a first electric regulating valve (12), and the first pressure transmitter (25), the first thermocouple (26), the liquid level meter (4) and the first electric regulating valve (12) are respectively connected to a controller through signals, and the controller is connected to an upper computer through signals; the oil outlet pipeline comprises a first filter (7) and an oil pump (9), one end of the first filter (7) is communicated to the inside of the oil tank (5) through a first pipe body, a first manual valve (6) is arranged on the first pipe body, a second thermocouple (8) is arranged in the first pipe body, the other end of the first filter (7) is communicated to the oil pump (9), the oil outlet end of the oil pump (9) is communicated to the third end of the overflow valve (11) through a second pipe body, a check valve (10) is arranged on the second pipe body, and the oil pump (9) and the second thermocouple (8) are connected to the controller through signals; the oil inlet pipeline comprises a second filter (2), the second filter (2) is communicated to the oil tank (5) through a third pipe body, a first electromagnetic valve (3) is arranged on the third pipe body, the second filter (2) is communicated to the external oil tank (5) through a fourth pipe body, a manual stop valve (1) is arranged on the fourth pipe body, and a signal of the first electromagnetic valve (3) is connected to the controller.

2. A diesel fuel combustion device for a booster test stand according to claim 1, characterized in that: the first pipeline comprises a fifth pipeline body, a first end of the fifth pipeline body is fixedly connected to a first end of the overflow valve (11), a second end of the fifth pipeline body is fixedly connected to the side wall of the diesel combustor (24), an ignition electromagnetic valve (16) is arranged at a second end of the fifth pipeline body, a first mass flowmeter (13), a second pressure transmitter (14) and a second manual valve (15) are respectively arranged on the fifth pipeline body, the first mass flowmeter (13) and the second manual valve (15) are respectively located on two sides of the second pressure transmitter (14), and the ignition electromagnetic valve (16), the first mass flowmeter (13) and the second pressure transmitter (14) are respectively connected to a controller in a signal mode.

3. A diesel fuel combustion device for a booster test stand according to claim 1, characterized in that: the air pipeline comprises a main flow electric regulating valve and a sixth pipe body and a seventh pipe body, wherein the two ends of the main flow electric regulating valve are respectively provided with the sixth pipe body, one end of the sixth pipe body is fixedly connected to an air compressor, the sixth pipe body is provided with a low-pressure switch (17), one end of the seventh pipe body is fixedly connected to one end of a diesel combustor (24), the seventh pipe body is respectively provided with a second mass flowmeter (20), a third pressure transmitter (21) and a third manual valve (22) door, the second mass flowmeter (20) and the third manual valve (22) door are respectively positioned at two sides of the third pressure transmitter (21), a third thermocouple (23), the second mass flowmeter (20), the third pressure transmitter (21) and the low-pressure switch (17) are respectively connected to a controller in a signal mode.

4. A diesel fuel combustion apparatus for a booster test stand as defined in claim 3, wherein: the air pipeline still includes motorised valve (19), and the one end of motorised valve (19) is through eighth body intercommunication to sixth body, and the other end of motorised valve (19) is through ninth body intercommunication to seventh body, and the entrance point of eighth body is located between low pressure switch (17) and the main way governing valve, and the exit end of ninth body is located between the main way governing valve and between second mass flowmeter (20), motorised valve (19) signal connection to the controller.