CN211624849U - High-low pressure compressed air supply system with ejector - Google Patents
High-low pressure compressed air supply system with ejector Download PDFInfo
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- CN211624849U CN211624849U CN202020025175.9U CN202020025175U CN211624849U CN 211624849 U CN211624849 U CN 211624849U CN 202020025175 U CN202020025175 U CN 202020025175U CN 211624849 U CN211624849 U CN 211624849U
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Abstract
The utility model discloses a take high-low pressure compressed air supply system of ejector, the access connection of pipeline and low pressure gas holder is passed through in the export of air compressor machine, the access connection of pipeline and pressure reducing valve group is passed through in the export of gas cylinder group, the access connection of pipeline and valve group is passed through in the export of pressure reducing valve group, the access connection of pipeline and valve group is passed through in the export of valve group, the pipeline is passed through in the export of valve group and ejector, air compressor machineThe outlet is divided into a pipeline to be connected to an injection port of the injector, the outlet of the injector is connected with the inlet of the high-pressure gas storage tank through the pipeline, and a pressure regulating valve group is connected between the outlet of the injector and the outlet of the self-air compressor. The utility model discloses both avoided the high energy consumption of production high pressure compressed air and high pressure compressed air throttle decompression
Loss, and only a small amount of bottled compressed air is consumed to prepare high-pressure compressed air meeting the requirements of high-pressure user dosage and pressure; the gas cylinder group can be used as a standby gas source of the air compressor to supplement and adjust the unbalance of gas load for low-pressure users, and a standby unit of the air compressor is saved.
Description
Technical Field
The utility model relates to a take high-low pressure compressed air supply system of ejector can be used to penetrate the high-pressure compressed air that the principle produced through drawing with the low pressure compressed air that uses in all kinds of industrial production processes such as power plant, smelting plant, chemical plant, paper mill, printing factory, cigarette factory, belongs to compressed air supply technical field.
Background
In many factories, high-pressure compressed air for a process and low-pressure compressed air for an instrument and a pneumatic tool are required simultaneously due to requirements of the process, the instrument and the pneumatic tool. In the process, the high-pressure compressed air is throttled and decompressed to generate ineffective and devaluing energy, and particularly when the low-pressure compressed air is greatly consumed and the high-pressure compressed air is less consumed, the method is high in power consumption and low in energy utilization efficiency. On the other hand, the air compressor needs to be provided with a standby unit, so that the investment cost is high and the occupied area is large.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: when high-pressure process compressed air and low-pressure instrument and pneumatic tool compressed air are provided at the same time, how to reduce the floor area of supply equipment and reduce the power consumption.
In order to solve the technical problem, the technical scheme of the utility model provides a take high-low pressure compressed air supply system of ejector, a serial communication port, including the air compressor machine that provides low pressure compressed air and the gas cylinder group that provides bottled compressed air, the export of air compressor machine is through the pipe and the access connection of the low pressure gas holder that provides low pressure compressed air for the low pressure user, the export of gas cylinder group is through the pipe and the access connection of the pressure reducing valve group with bottled compressed air decompression to superhigh pressure compressed air, the export of pressure reducing valve group is through the pipe and the access connection of the control valve group that is used for adjusting superhigh pressure compressed air flow, the export of control valve group is through the pipe and the access connection of ejector, the air compressor machine export is divided a pipeline and is connected to the ejector nozzle of ejector, the export of ejector is through the pipe and the access connection of the high pressure gas holder that provides high pressure compressed air, and a pressure regulating valve bank is connected between the outlet of the ejector and the outlet of the self-air compressor.
Preferably, the pressure reducing valve group is arranged at an air supply outlet of the air bottle group.
Preferably, the working fluid in the ejector is ultrahigh pressure compressed air, and the ejector fluid in the ejector is low pressure compressed air; the ultrahigh pressure compressed air and the low pressure compressed air are mixed in the ejector to form high pressure compressed air meeting the requirements of high pressure users.
Preferably, a second pressure gauge for controlling the opening of the valve of the control valve group through the output pressure is arranged on the high-pressure air storage tank; the low-pressure air storage tank is provided with a first pressure gauge which controls the opening of the valve of the pressure regulating valve group through the output pressure.
Preferably, a second safety valve is arranged on the high-pressure air storage tank; the low-pressure gas storage tank is provided with a first safety valve.
Preferably, the air compressor is a fixed frequency unit without a standby unit.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses a bottled compressed air that system utilized gas cylinder group draws through the ejector to penetrate low pressure compressed air and generates high-pressure compressed air, has both avoided the high energy consumption and the high-pressure compressed air throttle decompression of production high-pressure compressed air
Loss, and only a small amount of bottled compressed air is consumed to prepare high-pressure compressed air meeting the requirements of high-pressure user dosage and pressure; the gas cylinder group can be used as a standby gas source of the air compressor to supplement and adjust the unbalance of gas load for low-pressure users, so that a standby unit of the air compressor is saved, the equipment investment cost and the occupied area are reduced, and the stability of low-pressure compressed air supply is ensured.
Drawings
Fig. 1 is a schematic diagram of a high and low pressure compressed air supply system with an eductor.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
The utility model relates to a take high-low pressure compressed air supply system of ejector, as shown in fig. 1, it includes air compressor machine 1, gas cylinder group 2, ejector 5, high-pressure gas holder 7, low pressure gas holder 8. The outlet of the air compressor 1 is connected with the inlet of the low-pressure air storage tank 8 through a pipeline, the outlet of the air bottle group 2 is connected with the inlet of the pressure reducing valve group 3 through a pipeline, and the pressure reducing valve group 3 is arranged at the air supply outlet of the air bottle group 2. The outlet of the pressure reducing valve group 3 is connected with the inlet of the control valve group 4 through a pipeline, the outlet of the control valve group 4 is connected with the inlet of the ejector 5 through a pipeline, the outlet of the air compressor 1 is divided into a pipeline connected to the injection port of the ejector 5, the outlet of the ejector 5 is connected with the inlet of the high-pressure air storage tank 7 through a pipeline, and the outlet of the ejector 5 is connected with the pressure regulating valve group 6 from the outlet of the air compressor 1.
The working fluid in the ejector 5 is ultrahigh pressure compressed air 17, and the ejection fluid in the ejector 5 is low pressure compressed air 15; the ultrahigh pressure compressed air 17 and the low pressure compressed air 15 are mixed in the ejector 5 to form high pressure compressed air 18 meeting the requirements of a high pressure user 9.
The high-pressure gas storage tank 7 is provided with a second safety valve 13 and a second pressure gauge 14, the setting pressure of the second safety valve 13 is set according to the gas pressure of the high-pressure user 9 (the setting pressure of the second safety valve 13 is set according to the gas pressure of the high-pressure user 9 and is used for protecting the gas pressure of the high-pressure user 9 from overpressure, the specific setting value is 1.1 times of the gas pressure of the high-pressure user 9), and the second pressure gauge 14 has pressure signal transmitting and remote transmitting functions.
The low-pressure gas storage tank 8 is provided with a first safety valve 11 and a first pressure gauge 12, the set pressure of the first safety valve 11 is set according to the gas pressure of the low-pressure user 10 (the set pressure of the first safety valve 11 is set according to the gas pressure of the low-pressure user 10 and is used for protecting the gas pressure of the low-pressure user 10 from overpressure, the specific set value is 1.1 times of the gas pressure of the low-pressure user 10), and the first pressure gauge 12 has pressure signal transmitting and remote transmitting functions.
The air pressure comprises the following types according to the intensity of pressure: low pressure (0.1-0.7 MPa), medium pressure (0.7-1.0 MPa), high pressure (1.0-10 MPa) and ultra high pressure (more than 20 MPa).
The air bottle group 2 is used as a standby air source of the air compressor 1, high-pressure compressed air 18 generated by mixing through the ejector 5 can form low-pressure compressed air 15 through the pressure regulating valve group 6, and the low-pressure compressed air is supplemented to the low-pressure air storage tank 8 for regulation and supplement, and the air compressor 1 needs to be a fixed-frequency unit at the moment. The air compressor 1 is a fixed frequency unit, a standby unit is not needed, and the low-pressure compressed air 15 required by the low-pressure user 10 is adjusted and supplemented through the pressure regulating valve group 6 when the flow rate changes.
The working principle of the utility model is as follows:
the air compressor 1 provides low-pressure compressed air 15, is connected to the low-pressure air storage tank 8 and supplies air to a low-pressure user 10.
The method is characterized in that bottled compressed air 16 is provided by a gas bottle group 2, a pressure reducing valve group 3 is arranged at a gas supply outlet of the gas bottle group 2, the pressure reducing valve group 3 reduces the pressure of the bottled compressed air 16 to ultrahigh-pressure compressed air 17, the pressure of the ultrahigh-pressure compressed air 17 is determined by using a mass balance equation and a Bernoulli equation according to the pressure and flow required by a high-pressure user 9, the pressure of the low-pressure compressed air 15 and an injection coefficient of an injector 5 (the specific determination method is that the selected gas injector 5 has a basic parameter of the injection coefficient, the injection coefficient is defined as the ratio of injected fluid flow (the flow of the low-pressure compressed air 15) to injected fluid flow (the flow of the ultrahigh-pressure compressed air 17), the gas flow of the high-pressure user 9 is the sum of the ultrahigh-pressure compressed air 17 and the low-pressure compressed air 15, and after the gas flow of the high-pressure, the flow of the low-pressure compressed air 15 and the flow of the ultrahigh-pressure compressed air 17 can be obtained; according to the flow of the low-pressure compressed air 15 and the size of a connector entering the ejector 5, the flow rate of the low-pressure compressed air 15 entering the ejector 5 can be obtained; after the gas pressure of the high-pressure user 9 is determined, the flow rate of the gas of the high-pressure user 9 at the outlet of the ejector 5 can be obtained according to the flow of the high-pressure compressed air 18 and the size of the outlet of the ejector 5; knowing the air pressure and flow rate of the high-pressure user 9 and the pressure and flow rate of the low-pressure compressed air 15, the relation value of the pressure and flow rate of the ultrahigh-pressure compressed air 17 can be obtained according to the Bernoulli equation, and then the pressure of the ultrahigh-pressure compressed air 17 can be finally obtained according to the relation value of the pressure and flow rate of the ultrahigh-pressure compressed air 17 and the known flow rate of the ultrahigh-pressure compressed air 17. ).
The ultrahigh pressure compressed air 17 enters the ejector 5 after the flow is regulated by the control valve group 4, wherein the working fluid of the ejector 5 is the ultrahigh pressure compressed air 17 and is connected to the inlet of the ejector 5, the ejection fluid is the low pressure compressed air 15 and is connected to the ejection port of the ejector 5 from the outlet of the air compressor 1 in a branch way, the ultrahigh pressure compressed air 17 is used as the working fluid to eject the low pressure compressed air 15 as the ejection fluid, the ultrahigh pressure compressed air 17 and the low pressure compressed air 15 are mixed in the ejector 5 to form the high pressure compressed air 18 meeting the requirement of a high pressure user 9, and the outlet of the ejector 5 is connected to the high pressure air storage tank 7 and then supplies air to the high pressure user 9. High-pressure compressed air 18 and low pressure compressed air 15 connect through the 6 bypasses of pressure regulating valves group before high pressure gas holder 7 and low pressure gas holder 8, and it is realized through connecting pressure regulating valves group 6 between 5 exports at the ejector and from air compressor machine 1 export, and pressure regulating valves group 6 comes control valve aperture according to the pressure of first manometer 12 output on the low pressure gas holder 8, adjusts flow. The control valve group 4 controls the opening of the valve according to the pressure output by the second pressure gauge 14 on the high-pressure air storage tank 7, and adjusts the flow.
Claims (6)
1. The high-low pressure compressed air supply system with the ejector is characterized by comprising an air compressor (1) for providing low-pressure compressed air (15) and an air bottle group (2) for providing bottled compressed air (16), wherein an outlet of the air compressor (1) is connected with an inlet of a low-pressure air storage tank (8) for providing low-pressure compressed air (15) for a low-pressure user (10) through a pipeline, an outlet of the air bottle group (2) is connected with an inlet of a pressure reducing valve group (3) for reducing the pressure of the bottled compressed air (16) to ultrahigh-pressure compressed air (17) through a pipeline, an outlet of the pressure reducing valve group (3) is connected with an inlet of a control valve group (4) for adjusting the flow of the ultrahigh-pressure compressed air (17) through a pipeline, an outlet of the control valve group (4) is connected with an inlet of the ejector (5) through a pipeline, and an outlet of the air compressor (1) is connected to an ejector port of, the outlet of the ejector (5) is connected with the inlet of a high-pressure air storage tank (7) which provides high-pressure compressed air (18) for a high-pressure user (9) through a pipeline, and a pressure regulating valve group (6) is connected between the outlet of the ejector (5) and the outlet of the self-air compressor (1).
2. The high-low pressure compressed air supply system with the ejector as set forth in claim 1, wherein the pressure reducing valve group (3) is arranged at an air supply outlet of the air bottle group (2).
3. The high-low pressure compressed air supply system with the ejector according to claim 1, wherein the working fluid in the ejector (5) is ultrahigh pressure compressed air (17), and the ejector fluid in the ejector (5) is low pressure compressed air (15); the ultrahigh pressure compressed air (17) and the low pressure compressed air (15) are mixed in the ejector (5) to form high pressure compressed air (18) meeting the requirements of a high pressure user (9).
4. The high-low pressure compressed air supply system with the ejector according to claim 1, wherein a second pressure gauge (14) for controlling the valve opening of the control valve group (4) through the output pressure is arranged on the high-pressure air storage tank (7); the low-pressure air storage tank (8) is provided with a first pressure gauge (12) for controlling the opening degree of the valve of the pressure regulating valve group (6) through the output pressure.
5. The high-low pressure compressed air supply system with ejector according to claim 1 or 4, characterized in that the high-pressure air storage tank (7) is provided with a second safety valve (13); the low-pressure air storage tank (8) is provided with a first safety valve (11).
6. The high-low pressure compressed air supply system with the ejector as set forth in claim 1, wherein the air compressor (1) is a fixed frequency unit without a spare unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020025175.9U CN211624849U (en) | 2020-01-07 | 2020-01-07 | High-low pressure compressed air supply system with ejector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020025175.9U CN211624849U (en) | 2020-01-07 | 2020-01-07 | High-low pressure compressed air supply system with ejector |
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| CN211624849U true CN211624849U (en) | 2020-10-02 |
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| CN202020025175.9U Active CN211624849U (en) | 2020-01-07 | 2020-01-07 | High-low pressure compressed air supply system with ejector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112344207A (en) * | 2020-10-12 | 2021-02-09 | 华中科技大学 | Liquid hydrogen and high-pressure gas hydrogen combined hydrogenation system based on injection mixed pressure |
| CN113958486A (en) * | 2021-08-27 | 2022-01-21 | 浙江镕达永能压缩机有限公司 | Steam compressor and steam ejector combined pressurization system and method thereof |
-
2020
- 2020-01-07 CN CN202020025175.9U patent/CN211624849U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112344207A (en) * | 2020-10-12 | 2021-02-09 | 华中科技大学 | Liquid hydrogen and high-pressure gas hydrogen combined hydrogenation system based on injection mixed pressure |
| CN113958486A (en) * | 2021-08-27 | 2022-01-21 | 浙江镕达永能压缩机有限公司 | Steam compressor and steam ejector combined pressurization system and method thereof |
| CN113958486B (en) * | 2021-08-27 | 2023-09-12 | 浙江镕达永能压缩机有限公司 | Vapor compressor and vapor ejector composite supercharging system and method thereof |
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