CN216240972U - Simple gas engine jet law electric signal acquisition system - Google Patents
Simple gas engine jet law electric signal acquisition system Download PDFInfo
- Publication number
- CN216240972U CN216240972U CN202123089498.8U CN202123089498U CN216240972U CN 216240972 U CN216240972 U CN 216240972U CN 202123089498 U CN202123089498 U CN 202123089498U CN 216240972 U CN216240972 U CN 216240972U
- Authority
- CN
- China
- Prior art keywords
- pressure
- jet
- constant volume
- volume chamber
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a simple gas engine jet law electrical signal acquisition system, which comprises a jet law measuring instrument, a jet pressurizing module, a constant volume chamber pressurizing and pressure releasing module and a constant volume chamber pressure signal acquisition module; the inside constant volume chamber that is provided with of jet-propelled law measuring apparatu, be provided with the jet-propelled valve on the jet-propelled law measuring apparatu, jet-propelled pressurization module is used for compressing test gas to target pressure to spout through the jet-propelled valve, constant volume chamber pressurization and pressure release module are used for pressurizeing or the pressure release to the constant volume chamber, constant volume chamber pressure signal acquisition module is used for converting the pressure fluctuation in the constant volume chamber into capacitor load current, and amplify the current signal in proportion and convert the voltage signal after and transmit for the oscilloscope, the oscilloscope is used for voltage signal and the drive signal who drives the jet-propelled valve. The utility model solves the problem that the electric signal acquisition of the air injection rule is difficult in the research and development process of the direct injection gas engine.
Description
Technical Field
The utility model relates to the technical field of gas engines, in particular to a simple gas engine jet law electric signal acquisition system.
Background
Engines using low-carbon fuels such as natural gas and hydrogen become one of the important channels for carbon neutralization in the internal combustion engine industry. The requirement of the gas engine on high transient and wide operating condition is met, the design requirement of the gas injection rule of the gas injection system is more accurate, and how to measure the gas injection rule with low cost and high precision is one of the important challenges for developing the gas fuel engine. However, most of the existing researches on the gas injection law in the gas fuel engine are expensive in equipment and complex in process.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a simple gas engine jet law electrical signal acquisition system to solve the problem that jet law electrical signals are difficult to acquire in the research and development process of a direct injection gas engine.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a simple gas engine gas injection law electrical signal acquisition system comprises a gas injection law measuring instrument, a gas injection pressurizing module, a constant volume chamber pressurizing and pressure releasing module and a constant volume chamber pressure signal acquisition module;
the inside constant volume chamber that is provided with of jet-propelled law measuring apparatu, be provided with the jet-propelled valve on the jet-propelled law measuring apparatu, jet-propelled pressurization module is used for compressing test gas to target pressure to spout through the jet-propelled valve, constant volume chamber pressurization and pressure release module are used for pressurizeing or the pressure release to the constant volume chamber, constant volume chamber pressure signal acquisition module is used for converting the pressure fluctuation in the constant volume chamber into capacitor load current, and amplify the current signal in proportion and convert the voltage signal after and transmit for the oscilloscope, the oscilloscope is used for voltage signal and the drive signal who drives the jet-propelled valve.
The utility model is further improved in that the air injection law measuring instrument comprises an air injection law measuring instrument main body, a constant volume chamber is arranged in the air injection law measuring instrument main body, and an air injection law measuring instrument end cover and an adapter are arranged at the top of the air injection law measuring instrument main body.
A further development of the utility model is that the gas injection valve is mounted on the adapter.
The utility model is further improved in that the pressure fluctuation caused by the air injection of the air injection valve in the constant volume chamber is transmitted to the signal acquisition module through the first pressure sensor and the second pressure sensor which are arranged on the main body of the measuring instrument.
The utility model has the further improvement that the gas injection pressurizing module comprises an air compressor, a high-pressure air pump, a test gas high-pressure air tank and a gas injection valve; the air injection pressurization module drives the high-pressure air pump to compress air in the test air high-pressure air tank to a target pressure through pressure generated by the air compressor, and the air injection pressurization module keeps and waits for the opening of the air injection valve after the target pressure is reached.
The utility model is further improved in that an air path stop valve is arranged at the outlet of the air compressor.
The utility model is further improved in that a pressure gauge is arranged at the outlet of the high-pressure air pump.
The utility model is further improved in that a second pressure reducing valve is arranged at the outlet of the high-pressure gas tank of the test gas.
The utility model has the further improvement that the constant volume chamber pressurizing and pressure-releasing module comprises a backpressure high-pressure gas tank, a first pressure-reducing valve, a second ball valve, a first ball valve and a pressure transmitter; high-pressure gas generated by the backpressure high-pressure gas tank can enter the constant volume chamber through the first pressure reducing valve and the second ball valve, the pressure relief part is controlled by controlling the first ball valve, and the first ball valve and the second ball valve are closed after the pressure transmitter reaches the target pressure and keeps stable.
The utility model has the further improvement that the constant volume chamber pressure signal acquisition module comprises a first pressure sensor, a second pressure sensor, a charge amplifier and a signal generator; a driving signal generated by a signal generator of the constant volume chamber pressure signal acquisition module can be transmitted to the oscilloscope while the air injection valve electromagnetic valve is opened; the first pressure sensor and the second pressure sensor are used for converting pressure fluctuation in the constant volume chamber into capacitor load current, the signal amplifier is used for amplifying a current signal in proportion, converting the current signal into a voltage signal and transmitting the voltage signal to the oscilloscope, and the oscilloscope can present two voltage signals and a driving signal.
Compared with the prior art, the utility model has at least the following beneficial technical effects:
(A) the utility model elaborates an electric signal acquisition system capable of accurately measuring the gas injection law under different injection pressures and injection pulse widths, and designs and processes an injection law measuring instrument by itself.
(B) The adapter is designed on the air injection valve part, so that the end cover and the main body of the measuring instrument do not need to be disassembled when different air injection rules of the air injection valve are tested, and the sealing performance of the whole air injection rule measuring instrument can be ensured under the condition of ensuring that the volume of the constant volume chamber is not changed.
(C) The air supply system of the utility model uses the high-flow high-pressure air pump, and can still ensure stable air injection pressure when the air injection valve has larger flow, thereby being capable of measuring the air injection rule of the high-flow air injection valve.
(D) The measuring part of the constant volume chamber of the utility model uses a high-precision pressure transmitter, and has the advantages of large measuring range and high precision compared with the traditional pointer pressure gauge.
(E) The gas circuit pipeline valve connection adopts a ferrule type connection and a conical surface sealing mode, so that the reliability of pipeline connection is improved, and parts are convenient to detach and replace. 316 stainless steel for the meter and line materials is suitable for use with less corrosive and acid base fluids.
(F) The charge amplifier used in the signal acquisition part can enable the oscilloscope to capture the electric signal fluctuation caused by weak pressure change of the constant volume chamber, and ensure the precision of the measurement result.
(G) The utility model has the advantages of simple principle and device, convenient operation, strong repeatability and strong practicability.
Drawings
Fig. 1 is a schematic structural diagram of the air injection law measuring system of the present invention.
Fig. 2 is an assembly exploded view of the air injection law measuring instrument of the present invention.
Description of reference numerals:
the device comprises an air compressor, a 2-gas path stop valve, a 3-high-pressure air pump, a 4-pressure gauge, a 5-gas injection valve, a 6-adapter, a 7-gas injection law measuring instrument end cover, an 8-gas injection law measuring instrument main body, a 9-pressure transmitter, a 10-first pressure sensor, a 11-second pressure sensor, a 12-first ball valve, a 13-second ball valve, a 14-first pressure reducing valve, a 15-backpressure high-pressure gas tank, a 16-second pressure reducing valve, a 17-test gas high-pressure gas tank, an 18-charge amplifier, a 19-oscilloscope, a 20-signal generator and a 21-upper computer.
Detailed Description
The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.
According to the technical scheme, as shown in fig. 1 and fig. 2, the simple electric signal acquisition system for the gas engine jet regulation is provided in the embodiment, is used for acquiring electric signals of the jet regulation of jet valves under different types and different working conditions, and has good response effect on different stages in a multi-time jet process.
The utility model provides a simple gas engine jet law electrical signal acquisition system, which mainly comprises a jet law measuring instrument, a jet pressurizing module, a constant volume chamber pressurizing and pressure releasing module and a constant volume chamber pressure signal acquisition module.
The air injection law measuring instrument is a main body part of a whole set of system and comprises an air injection law measuring instrument main body 8, an air injection law measuring instrument end cover 7 and an adapter 6. The air injection process is completed by an air injection valve 5 arranged on the measuring instrument, and pressure fluctuation caused by the air injection of the air injection valve in the constant volume chamber is transmitted to a signal acquisition module through a first pressure sensor 10 and a second pressure sensor 11 arranged on a main body 8 of the measuring instrument;
the jet pressurizing module comprises an air compressor 1, an air path stop valve 2, a high-pressure air pump 3, a pressure gauge 4, a test gas high-pressure air tank 17, a second reducing valve 16 and a jet valve 5. The air injection pressurization module drives the high-pressure air pump 3 to compress the air in the test air high-pressure air tank 17 to the target pressure through the pressure generated by the air compressor 1, and the air injection pressurization module keeps and waits for the opening of the air injection valve 5 after the target pressure is reached.
The constant volume chamber pressurization and pressure relief module comprises a backpressure high-pressure gas tank 15, a first pressure reducing valve 14, a second ball valve 13, a first ball valve 12 and a pressure transmitter 9. High-pressure gas generated by a backpressure high-pressure gas tank 15 enters a constant volume chamber through a first pressure reducing valve 14 and a second ball valve, a pressure relief part is controlled by controlling a first ball valve 12, and the first ball valve 12 and the second ball valve 13 are closed after a pressure transmitter 9 reaches a target pressure and keeps stable;
the constant-chamber pressure signal acquisition module comprises a first pressure sensor 10, a second pressure sensor 11, a charge amplifier 18 and a signal generator 19. A driving signal generated by a signal generator 19 of the constant volume chamber pressure signal acquisition module is transmitted to an oscilloscope 19 when an electromagnetic valve of the air injection valve 5 is opened; the first pressure sensor 10 and the second pressure sensor 11 convert pressure fluctuation in the constant volume chamber into capacitor load current, the signal amplifier 17 amplifies a current signal in proportion, converts the amplified current signal into a voltage signal and transmits the voltage signal to the oscilloscope 19, and the oscilloscope 19 simultaneously presents two voltage signals and a driving signal.
The utility model relates to a simple gas engine jet law electric signal acquisition system, which comprises the following components in working:
the installation and connection of the air injection pressurizing module, the constant volume chamber pressurizing and pressure releasing module, the constant volume chamber pressure signal acquisition module and the pressure signal post-processing module are respectively completed, and the valve of the air path is kept closed;
and (3) carrying out volume calibration of a constant volume chamber: completely assembling the main body 8 and the end cover 7 of the air injection law measuring instrument; closing the first ball valve 12 and the second ball valve 13, and injecting water into the constant volume chamber by using a medical injector through the air injection valve mounting hole until the water surface is flush with the lower surface of the end cover 7 of the measuring instrument; opening the first ball valve 12 and measuring the volume of the leakage water; disassembling an end cover of the measuring instrument, taking out the residual water by using a needle cylinder to measure the volume and counting the total amount of the leaked water; repeating the measuring process of the volume of the constant volume chamber and taking the arithmetic average value of the water volume as the volume V of the constant volume chamber;
and (3) carrying out tightness test on the air injection rule measuring instrument: completely installing the air injection law measuring instrument and the air injection valve 5, and closing the first ball valve 12 and the second ball valve 13; opening a backpressure high-pressure gas tank 15 and a first pressure reducing valve 14, opening a second ball valve 13 to fill a proper amount of gas into the constant volume chamber, closing the second ball valve, and waiting until the indication number of the pressure transmitter is stable and does not change any more, namely, the sealing type of the gas injection law measuring instrument meets the test requirement; opening the first ball valve 12, and discharging high-pressure gas in the constant volume chamber; the operations of filling gas into the constant volume chamber and removing the gas are repeated, and the gas in the constant volume chamber is ensured to be backpressure gas; repeating the operation for five times, closing the first ball valve 12 and the second ball valve 13, and keeping a certain pressure in the constant volume chamber;
carrying out air injection operation: closing the first ball valve 12, opening the second ball valve 13, filling a certain amount of gas into the constant volume chamber; opening a gas path stop valve when the pressure of the chamber to be determined is stable, opening a test gas high-pressure gas tank 17 and a second pressure reducing valve 16, opening the air compressor 1 and the high-pressure gas pump 3, and controlling the outlet pressure of the high-pressure gas pump 3, namely the display pressure of the pressure gauge 4, to be a designated pressure and keeping the pressure stable; after the pressure of the gas path connected with the gas spraying valve and the pressure of the constant volume chamber are stable, a driving signal is transmitted to the gas spraying valve 5 by the signal generator 20 according to a preset gas spraying condition to finish gas spraying operation, and meanwhile, the driving signal generated by the signal generator 20 is transmitted to the oscilloscope 19;
capturing a pressure signal curve in a constant volume chamber: setting acquisition parameters of the charge amplifier 18; the current signal passing through the charge amplifier 18 is converted into an amplified voltage signal and transmitted to the oscilloscope 19; at this time, the oscilloscope 19 will display two voltage signals and one driving signal at the same time;
the equipment maintenance method after the completion of the single air injection measurement comprises the following steps: and slowly opening the first ball valve after the single injection of the air injection valve is finished, discharging the gas in the constant volume chamber, and inflating the air in the constant volume chamber to the specified pressure again after pressure relief to prepare for the next measurement. After all measurements are completed, opening the first ball valve 12, closing the second ball valve 13, disassembling the adapter 6 and the jet valve, closing the air compressor 1, closing the air path stop valve 2, closing the test gas high-pressure gas tank 17, closing the second pressure reducing valve 16, closing the backpressure high-pressure gas tank 15, closing the first pressure reducing valve 14, closing the high-pressure gas pump 3, removing the gas in the pump until the indication number of the pressure gauge 4 is 0, disassembling the jet law measuring instrument end cover 7, disassembling the pressure transmitter 9, properly storing the first pressure sensor 10 and the second pressure sensor 11, and ending the experiment.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. A simple gas engine gas injection law electrical signal acquisition system is characterized by comprising a gas injection law measuring instrument, a gas injection pressurizing module, a constant volume chamber pressurizing and pressure releasing module and a constant volume chamber pressure signal acquisition module;
the inside constant volume chamber that is provided with of jet-propelled law measuring apparatu, be provided with the jet-propelled valve on the jet-propelled law measuring apparatu, jet-propelled pressurization module is used for compressing test gas to target pressure to spout through the jet-propelled valve, constant volume chamber pressurization and pressure release module are used for pressurizeing or the pressure release to the constant volume chamber, constant volume chamber pressure signal acquisition module is used for converting the pressure fluctuation in the constant volume chamber into capacitor load current, and amplify the current signal in proportion and convert the voltage signal after and transmit for the oscilloscope, the oscilloscope is used for voltage signal and the drive signal who drives the jet-propelled valve.
2. The system for acquiring the electrical signal of the gas engine jet law according to claim 1, wherein the gas engine jet law measuring instrument comprises a gas engine jet law measuring instrument main body, a constant volume chamber is arranged in the gas engine jet law measuring instrument main body, and a gas engine jet law measuring instrument end cover and an adapter are arranged at the top of the gas engine jet law measuring instrument main body.
3. A simple gas engine jet regulation electrical signal acquisition system as claimed in claim 2 wherein the jet valve is mounted on the adapter.
4. The simple gas engine jet regulation electric signal acquisition system as claimed in claim 2, wherein pressure fluctuation caused by jet of the jet valve in the constant volume chamber is transmitted to the signal acquisition module through the first pressure sensor and the second pressure sensor which are installed on the measuring instrument main body.
5. The simple gas engine jet regulation electric signal acquisition system according to claim 2, wherein the jet pressurization module comprises an air compressor, a high-pressure air pump, a test gas high-pressure air tank and a jet valve; the air injection pressurization module drives the high-pressure air pump to compress air in the test air high-pressure air tank to a target pressure through pressure generated by the air compressor, and the air injection pressurization module keeps and waits for the opening of the air injection valve after the target pressure is reached.
6. A simple gas engine jet regulation electric signal acquisition system as claimed in claim 5, wherein an air path stop valve is arranged at the outlet of the air compressor.
7. A simple electric signal acquisition system for the gas engine jet regulation according to claim 5, characterized in that a pressure gauge is arranged at the outlet of the high-pressure air pump.
8. A simple electric signal acquisition system for the gas engine jet regulation according to claim 5, characterized in that a second pressure reducing valve is arranged at the outlet of the high-pressure test gas tank.
9. The simple gas engine gas injection law electrical signal acquisition system according to claim 2, wherein the constant volume chamber pressurization and pressure relief module comprises a backpressure high-pressure gas tank, a first pressure reducing valve, a second ball valve, a first ball valve and a pressure transmitter; high-pressure gas generated by the backpressure high-pressure gas tank can enter the constant volume chamber through the first pressure reducing valve and the second ball valve, the pressure relief part is controlled by controlling the first ball valve, and the first ball valve and the second ball valve are closed after the pressure transmitter reaches the target pressure and keeps stable.
10. The simple gas engine gas injection regular electric signal acquisition system as claimed in claim 2, wherein the constant volume pressure signal acquisition module comprises a first pressure sensor, a second pressure sensor, a charge amplifier and a signal generator; a driving signal generated by a signal generator of the constant volume chamber pressure signal acquisition module can be transmitted to the oscilloscope while the air injection valve electromagnetic valve is opened; the first pressure sensor and the second pressure sensor are used for converting pressure fluctuation in the constant volume chamber into capacitor load current, the signal amplifier is used for amplifying a current signal in proportion, converting the current signal into a voltage signal and transmitting the voltage signal to the oscilloscope, and the oscilloscope can present two voltage signals and a driving signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123089498.8U CN216240972U (en) | 2021-12-09 | 2021-12-09 | Simple gas engine jet law electric signal acquisition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123089498.8U CN216240972U (en) | 2021-12-09 | 2021-12-09 | Simple gas engine jet law electric signal acquisition system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216240972U true CN216240972U (en) | 2022-04-08 |
Family
ID=80961842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123089498.8U Active CN216240972U (en) | 2021-12-09 | 2021-12-09 | Simple gas engine jet law electric signal acquisition system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216240972U (en) |
-
2021
- 2021-12-09 CN CN202123089498.8U patent/CN216240972U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109083790B (en) | System and method for measuring oil injection rate based on Zeuch piezomagnetic method | |
| CN203643083U (en) | Low temperature pressure sensor automatic calibration device | |
| US7197918B2 (en) | Apparatus and method for evaluating fuel injectors | |
| CN201034763Y (en) | Gas-actuated relay calibration stand | |
| CN208653782U (en) | Liquid flow test device for liquid rocket engine thrust chamber | |
| CN109026484B (en) | Control system of on-line detection platform of automobile air inlet type oil sprayer | |
| CN106525395A (en) | Testing stand for testing large power natural gas injection valve | |
| EP0717276A2 (en) | Cylinder combustion gas leakage testing | |
| CN216240972U (en) | Simple gas engine jet law electric signal acquisition system | |
| CN102323006B (en) | Portable pressure calibrator | |
| CN104897380A (en) | Common-rail pipe pressure-limiting valve matching element pressure-holding stroke detecting device and measuring method | |
| CN203688152U (en) | Novel gas pressure reducer verifying device | |
| CN114483301B (en) | Simple gas engine jet rule measuring method | |
| CN110319074B (en) | Device and method for testing cut-off flow characteristics of cut-off valve | |
| CN202255759U (en) | Portable pressure calibrating instrument | |
| CN111289064A (en) | Online calibrating device and method for metering performance of hydrogenation machine | |
| CN204944772U (en) | A kind of source of the gas steering gear system experiment test equipment | |
| CN213658201U (en) | Hydrogen system detection device | |
| CN212250697U (en) | Hydraulic pressure setting device for aircraft test | |
| CN209470800U (en) | A kind of pressure transmitter configurations | |
| CN201732149U (en) | Calibration console of quick-acting oil pressure relay | |
| CN211347365U (en) | Safety valve pressure setting and sealing detection device | |
| CN218760200U (en) | Gas engine jet testing device | |
| CN219798708U (en) | Fuel nozzle flow measuring device of turbojet engine | |
| CN111896191A (en) | On-site calibration method and auxiliary calibration equipment for integral oil tank leakage detection equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |