CN216132774U - Air pressure dynamic adjusting device - Google Patents
Air pressure dynamic adjusting device Download PDFInfo
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- CN216132774U CN216132774U CN202121353150.2U CN202121353150U CN216132774U CN 216132774 U CN216132774 U CN 216132774U CN 202121353150 U CN202121353150 U CN 202121353150U CN 216132774 U CN216132774 U CN 216132774U
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Abstract
The utility model discloses an air pressure dynamic adjusting device, which comprises a main pipeline, a pressure sensor and a pressure sensor, wherein the main pipeline is provided with a sampling end and a measuring end; a shut-off valve disposed in the main pipeline; the air pressure regulating valve is arranged in the main pipeline and positioned between the stop valve and the measuring end, and can regulate the air pressure in the main pipeline behind the air pressure regulating valve in a working state; the pressure transmitter is arranged in the main pipeline and positioned between the air pressure regulating valve and the measuring end, and can be used for monitoring the pressure value of the gas in the main pipeline; the first branch is connected into the main pipeline through an oil mist filter, the oil mist filter is arranged between the stop valve and the air pressure regulating valve, and the first branch can carry out post-treatment on oil liquid filtered by the oil mist filter; and the second branch is connected into the main pipeline between the air pressure regulating valve and the pressure transmitter, and the second branch can discharge the gas in the main pipeline.
Description
Technical Field
The utility model relates to the technical field of marine engines, in particular to a dynamic air pressure adjusting device.
Background
In the field of marine engines, certain tests or tests require continuous sampling of the gas from the engine intake manifold. Generally, gas composition analysis equipment has strict requirements on the pressure of the sampled gas, too high a gas pressure may damage the equipment, and too low a gas pressure may cause inaccuracy of the analysis result. The air pressure in the air inlet main pipe of the existing engine is changed along with the change of the load of the engine, and a common air pressure adjusting device cannot ensure constant output air pressure.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a dynamic air pressure adjusting device, which is used for solving the problem of unstable air pressure when the continuous sampling analysis is carried out on the air of an air inlet main pipe of an engine in the prior art.
The above object of the present invention can be achieved by the following technical solutions:
the utility model provides a dynamic air pressure adjusting device, which comprises: the main pipeline is provided with a sampling end and a measuring end, the sampling end is connected with an air inlet main pipe of the engine, and the measuring end is connected with an air inlet of the analysis equipment; the cut-off valve is arranged in the main pipeline, can convey gas from the sampling end to the measuring end in a first state, and can cut off the gas circulation between the sampling end and the measuring end in a second state; the air pressure regulating valve is arranged in the main pipeline and is positioned between the cut-off valve and the measuring end, and the air pressure regulating valve can regulate the air pressure in the main pipeline after the air pressure regulating valve is in a working state; the pressure transmitter is arranged in the main pipeline and positioned between the air pressure regulating valve and the measuring end, and can be used for monitoring the pressure value of the gas in the main pipeline; the first branch is connected into the main pipeline through an oil mist filter, the oil mist filter is arranged between the stop valve and the air pressure regulating valve, and the first branch can carry out post-treatment on oil liquid filtered by the oil mist filter; and the second branch is connected into the main pipeline between the air pressure regulating valve and the pressure transmitter, and can discharge the gas in the main pipeline.
Preferably, the first branch line includes an oil collector, a drain valve, and a first branch line, and the oil collector communicates with the oil mist filter and the drain valve, respectively, through the first branch line.
Preferably, a liquid level switch is arranged in the oil collector, and based on the fact that the volume of the oil in the oil collector meets a preset value, the relief valve is automatically opened and discharges the oil in the oil collector.
Preferably, the second branch comprises an air release regulating valve, an air release flow meter and an air release opening which are sequentially communicated through a second branch pipeline, and the air release regulating valve is communicated with the main pipeline.
Preferably, the controller is electrically connected with the cut-off valve, the air pressure regulating valve, the pressure transmitter, the emptying regulating valve and the emptying flowmeter respectively; under operating condition, the controller can control the break-make of trip valve to through receiving the signal of telecommunication that pressure transmitter generated is adjusted the atmospheric pressure governing valve with the working parameter of unloading governing valve is so that unloading flowmeter with pressure transmitter's parameter meets the demands.
Preferably, the shut-off valve is an electric valve or a pneumatic valve.
Preferably, the air pressure regulating valve is an electric valve or a pneumatic valve.
Preferably, the emptying adjusting valve is an electric valve or a pneumatic valve.
Preferably, the shut-off valve is manually switched between the first state and the second state.
Preferably, the air pressure regulating valve and the emptying regulating valve are both driven in a manual mode.
The utility model has the characteristics and advantages that:
the utility model can dynamically adjust the output air pressure according to the change of the air pressure in the air inlet main pipe of the engine, thereby ensuring that the air pressure entering the gas component analysis equipment is constant, and further ensuring that the equipment is prevented from being damaged under the condition that the accuracy of an analysis result meets the requirement.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a dynamic air pressure adjustment device according to the present invention;
fig. 2 is a schematic structural diagram of the air pressure dynamic adjustment device of the present invention.
Reference numerals and description:
100. a dynamic air pressure regulating device; 1. a sampling end; 2. a shut-off valve; 3. an oil mist filter; 4. an oil collector; 5. a relief valve; 6. an air pressure regulating valve; 7. a pressure transmitter; 8. a vent regulating valve; 9. a measuring end; 10. a vent port; 11. emptying the flowmeter; 12. and a controller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a dynamic air pressure regulating device 100, which comprises a main pipeline, a stop valve 2, an air pressure regulating valve 6, a pressure transmitter 7, a first branch and a second branch, and please refer to fig. 1 and fig. 2.
Specifically, the main pipeline is provided with a sampling end 1 and a measuring end 9, the sampling end 1 is connected with an air inlet main pipe of the engine, and the measuring end 9 is connected with an air inlet of the analysis equipment; the shut-off valve 2 is arranged in the main pipeline, the shut-off valve 2 can send gas from the sampling end 1 to the measuring end 9 in a first state, and the shut-off valve 2 can cut off the gas circulation between the sampling end 1 and the measuring end 9 in a second state; the air pressure regulating valve 6 is arranged in the main pipeline and is positioned between the cut-off valve 2 and the measuring end 9, and in a working state, the air pressure regulating valve 6 can regulate the air pressure in the main pipeline behind the air pressure regulating valve (namely, the air pressure behind the air pressure regulating valve can be used for regulating the air pressure behind the air pressure regulating valve); the pressure transmitter 7 is arranged in the main pipeline and is positioned between the air pressure regulating valve 6 and the measuring end 9, and the pressure transmitter 7 can be used for monitoring the pressure value of the gas in the main pipeline; the first branch is connected into the main pipeline through an oil mist filter 3, the oil mist filter 3 is arranged between the stop valve 2 and the air pressure regulating valve 6, and the first branch can carry out post-treatment on oil filtered by the oil mist filter 3; the second branch is connected into the main pipeline between the air pressure regulating valve 6 and the pressure transmitter 7, and the second branch can exhaust the gas in the main pipeline.
The utility model can dynamically adjust the output air pressure according to the change of the air pressure in the air inlet main pipe of the engine, thereby ensuring that the air pressure entering the gas component analysis equipment is constant, and further ensuring that the equipment is prevented from being damaged under the condition that the accuracy of an analysis result meets the requirement.
Further, referring to fig. 1 and 2, the first branch line includes an oil collector 4, a bleed valve 5, and a first branch line, and the oil collector 4 communicates with the oil mist filter 3 and the bleed valve 5, respectively, through the first branch line. Wherein the oil mist filter 3 is capable of filtering oil mist and impurities contained in the gas flowing through it with the shut-off valve 2 open. The utility model can be applied to the two-stroke engine through the design mode, because the gas of the air inlet manifold of the two-stroke engine usually contains oil mist or suspended oil drops, the application range of the product is enlarged.
Further, in some embodiments, a level switch (not shown) is provided in the oil collector 4, and the drain valve 5 automatically opens and drains the oil in the oil collector 4 based on the volume of the oil in the oil collector 4 satisfying a predetermined value. The oil collector 4 of the present invention can be used for temporarily storing the oil filtered by the oil mist filter 3, and because it has a liquid level switch, the drain valve 5 can be automatically controlled to open to drain the oil therein at a high liquid level, thereby preventing the oil collector 4 from overflowing.
In some embodiments, referring to fig. 1 and 2, the second branch comprises a vent control valve 8, a vent flow meter 11 and a vent 10 which are communicated in sequence through a second branch pipeline, and the vent control valve 8 is communicated with the main pipeline. Wherein, atmospheric control valve 8 is arranged in adjusting the gaseous blow-down flow of the device main line, and the atmospheric flowmeter 11 is used for measuring the gaseous flow of blow-down to through adjusting atmospheric control valve 8 in order to guarantee that atmospheric flowmeter 11 makes statistics of accurate blow-down flow, and then guarantee to adjust the precision. In some embodiments, the free end of the second branch conduit, which is in communication with the atmosphere, forms the vent 10, thereby enabling production cost savings.
In other embodiments, referring to fig. 2, the air pressure dynamic adjustment device 100 further includes a controller 12 electrically connected to the shut-off valve 2, the air pressure regulating valve 6, the pressure transmitter 7, the vent regulating valve 8 and the vent flowmeter 11, respectively; under the working state, the controller 12 can control the on-off of the cut-off valve 2 and adjust the working parameters of the air pressure regulating valve 6 and the emptying regulating valve 8 by receiving the electric signals generated by the pressure transmitter 7 so as to enable the parameters of the emptying flowmeter 11 and the pressure transmitter 7 to meet the requirements. Wherein, the shut-off valve 2, the air pressure regulating valve 6 and the emptying regulating valve 8 can all respond to the control of the controller 12.
In some embodiments, shut-off valve 2 is an electrically or pneumatically operated valve, air pressure regulating valve 6 is an electrically or pneumatically operated valve, and vent regulating valve 8 is an electrically or pneumatically operated valve.
It should be understood by those skilled in the art that it is within the scope of the present invention to employ either electrically operated valves or pneumatically operated valves for the shut-off valve 2, the air pressure regulating valve 6 and the air vent regulating valve 8, as long as the valves can be electrically connected to the controller 12 to transmit and receive electrical signals.
In some embodiments, the shut-off valve 2 is manually switched between the first state and the second state, i.e. the shut-off valve 2 is a manual valve. In other embodiments, the air pressure regulating valve 6 and the air vent regulating valve 8 are both manually actuated. By adopting the driving mode, the utility model can avoid the condition that the adjusting function is invalid due to the failure of the power source, thereby ensuring the adjusting effect and further ensuring that the equipment is prevented from being damaged under the condition that the accuracy of the analysis result meets the requirement.
The working principle is described in detail below, with reference to fig. 2:
the cut-off valve 2 can be controlled to be opened according to the requirement (namely, the cut-off valve is controlled to be opened by the controller 12), and the oil mist is removed after the gas passes through the oil mist filter 3; the air pressure regulating valve 6 performs dynamic closed-loop regulation according to the air pressure of the measuring end 9 preset by the controller 12 and the air pressure of the measuring end 9 actually measured by the pressure transmitter 7, so that the measuring end 9 reaches the preset air pressure.
In some embodiments, the vent regulating valve 8 can dynamically adjust the vent flow of the device to the sampled gas in a closed loop according to the preset vent flow and the vent flow measured by the vent flow meter 11, so as to improve the dynamic response of the gas composition analysis. It should be noted that the gas flow and pressure required by the gas composition analysis device are constant, and if the air vent control valve 8 is not provided, the gas of the engine intake manifold slowly flows through the analysis device according to the gas flow required by the analysis device, so that the analysis device cannot immediately reflect the gas composition of the intake manifold when the engine intake gas composition changes abruptly. The atmospheric air can be emptied by the emptying adjusting valve 8 according to the requirements, the sampling flow of the device is improved, the updating rate of the sample gas is accelerated equivalently, and correspondingly, the response speed of gas component analysis is improved.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (10)
1. An air pressure dynamic adjustment device, comprising:
the main pipeline is provided with a sampling end and a measuring end, the sampling end is connected with an air inlet main pipe of the engine, and the measuring end is connected with an air inlet of the analysis equipment;
the cut-off valve is arranged in the main pipeline, can convey gas from the sampling end to the measuring end in a first state, and can cut off the gas circulation between the sampling end and the measuring end in a second state;
the air pressure regulating valve is arranged in the main pipeline and is positioned between the cut-off valve and the measuring end, and the air pressure regulating valve can regulate the air pressure in the main pipeline after the air pressure regulating valve is in a working state;
the pressure transmitter is arranged in the main pipeline and positioned between the air pressure regulating valve and the measuring end, and can be used for monitoring the pressure value of the gas in the main pipeline;
the first branch is connected into the main pipeline through an oil mist filter, the oil mist filter is arranged between the stop valve and the air pressure regulating valve, and the first branch can carry out post-treatment on oil liquid filtered by the oil mist filter;
and the second branch is connected into the main pipeline between the air pressure regulating valve and the pressure transmitter, and can discharge the gas in the main pipeline.
2. The air pressure dynamics adjustment apparatus of claim 1, wherein the first branch includes an oil collector, a bleed valve, and a first branch line, the oil collector communicating with the oil mist filter and the bleed valve, respectively, through the first branch line.
3. The air pressure dynamic adjustment device of claim 2, wherein a liquid level switch is disposed in the oil collector, and the relief valve automatically opens and drains the oil from the oil collector based on the volume of the oil in the oil collector satisfying a predetermined value.
4. The air pressure dynamic adjusting device according to claim 1, wherein the second branch comprises an air release adjusting valve, an air release flow meter and an air release opening which are sequentially communicated through a second branch pipeline, and the air release adjusting valve is communicated with the main pipeline.
5. The air pressure dynamic adjustment device according to claim 4, further comprising a controller electrically connected to the cut-off valve, the air pressure regulating valve, the pressure transmitter, the vent regulating valve and the vent flow meter, respectively;
under operating condition, the controller can control the break-make of trip valve to through receiving the signal of telecommunication that pressure transmitter generated is adjusted the atmospheric pressure governing valve with the working parameter of unloading governing valve is so that unloading flowmeter with pressure transmitter's parameter meets the demands.
6. The air pressure dynamic adjustment device of claim 5, wherein the shut-off valve is an electric valve or a pneumatic valve.
7. The air pressure dynamic adjustment device of claim 5, wherein the air pressure adjustment valve is an electric valve or a pneumatic valve.
8. The air pressure dynamic adjustment device of claim 5, wherein the air vent adjustment valve is an electric valve or a pneumatic valve.
9. An air pressure dynamics adjustment device according to claim 4, characterised in that the shut-off valve is manually switched between the first and second states.
10. The air pressure dynamic adjustment device of claim 4, wherein the air pressure adjustment valve and the air release adjustment valve are both manually actuated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121353150.2U CN216132774U (en) | 2021-06-16 | 2021-06-16 | Air pressure dynamic adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121353150.2U CN216132774U (en) | 2021-06-16 | 2021-06-16 | Air pressure dynamic adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216132774U true CN216132774U (en) | 2022-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121353150.2U Active CN216132774U (en) | 2021-06-16 | 2021-06-16 | Air pressure dynamic adjusting device |
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|---|---|
| CN (1) | CN216132774U (en) |
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2021
- 2021-06-16 CN CN202121353150.2U patent/CN216132774U/en active Active
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