CN109882734A - A kind of constant pressure exhaust system - Google Patents
A kind of constant pressure exhaust system Download PDFInfo
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- CN109882734A CN109882734A CN201910236858.0A CN201910236858A CN109882734A CN 109882734 A CN109882734 A CN 109882734A CN 201910236858 A CN201910236858 A CN 201910236858A CN 109882734 A CN109882734 A CN 109882734A
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- regulating valve
- venturi
- outlet
- instrument
- constant pressure
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- 239000002775 capsule Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 241001672694 Citrus reticulata Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003828 downregulation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The invention discloses a kind of constant pressure exhaust systems, including driving port, regulating valve one, regulating valve two, Venturi, exhaust outlet and instrument outlet；The driving port, regulating valve two, Venturi and exhaust outlet are sequentially communicated setting, the driving port connection is arranged on the gas source of driving gas of high pressure, the regulating valve two is connected with exhaust outlet signal, and the instrument outlet is arranged on the trunnion of Venturi；Between driving port and regulating valve two, other end connection is arranged between instrument outlet and the trunnion of Venturi for wherein one end connection setting of the regulating valve one, and the regulating valve one is connected with instrument outlet signal.It can stablize the back pressure of instrument on default value, substantially increase the accuracy of measurement, structure is simple, easy to use.
Description
Technical field
The present invention relates to constant-voltage systems, and in particular to a kind of constant pressure exhaust system.
Background technique
In instrument on-line analysis industry, instrument outlet need to be connected to atmosphere, to keep the stabilization of back pressure.Increasingly with environmental protection
Strictly, instrument outlet does not allow to discharge atmosphere, can only be discharged into torch or low pressure pipeline.But the air pressure in torch or low pressure pipeline
It is above atmospheric gas pressure, the back pressure that this will lead to instrument is excessively high, the analysis of instrument is influenced, so that result is distorted；Back pressure is excessively high,
Will lead to the gas in instrument can not be discharged；In addition, either torch or low pressure pipeline, air pressure be all it is unstable, this
So that the analysis result of instrument fluctuates.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of constant pressure exhaust systems, can stablize the back pressure of instrument
On default value, the accuracy of measurement is substantially increased, structure is simple, easy to use.
In order to solve the above-mentioned technical problems, the present invention provides a kind of constant pressure exhaust systems, including driving port, regulating valve
One, regulating valve two, Venturi, exhaust outlet and instrument outlet；The driving port, regulating valve two, Venturi and exhaust outlet
It is sequentially communicated setting, the driving port connection is arranged on the gas source of driving gas of high pressure, the regulating valve two and gives off
Message number connection, the instrument outlet are arranged on the trunnion of Venturi；Wherein one end connection of the regulating valve one is set
It sets between driving port and regulating valve two, other end connection is arranged between instrument outlet and the trunnion of Venturi, described
Regulating valve one is connected with instrument outlet signal.
Preferably, the regulating valve one is direct-operated regulator, the executing agency of the direct-operated regulator is connected to
Between driving port and regulating valve two, the signal source capsule connection of the direct-operated regulator is arranged in instrument exit for setting.
Preferably, the regulating valve two is direct-operated regulator, the executing agency of the direct-operated regulator is connected to
It is arranged between the air inlet of Venturi and driving port and the connecting node of regulating valve one, the signal of the direct-operated regulator
Source capsule connection is arranged at exhaust outlet.
Preferably, being provided with and communicated with flow between the regulating valve one and the connecting node and Venturi of instrument outlet
Meter.
Preferably, the flow is calculated as spinner flowmeter.
Preferably, being provided with flow-limiting valve at the air inlet of the flowmeter.
Preferably, being provided with check valve between the regulating valve two and the air inlet of Venturi.
Preferably, being provided with and communicated with relief valve between the instrument outlet and the signal acquisition point of regulating valve one.
Preferably, including pressure relief vent, pressure relief vent connection is arranged on relief valve, the pressure relief vent and
Atmosphere.
Preferably, the exhaust outlet connection is arranged on torch or low pressure pipeline.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention can increase Venturi in the pressure rise of the gas outlet of Venturi by setting regulating valve two
Atmospheric pressure is driven, pressure at Venturi trunnion is kept to stablize, when Venturi gas outlet pressure reduces, reduces Venturi and drives gas
Pressure keeps pressure at Venturi trunnion to stablize.
2, the present invention can be increased air compensation, make instrument by setting regulating valve one when the pressure in instrument exit reduces
The pressure in table exit is stablized；And when the pressure that instrument exports out increases, air compensation is reduced, keeps the pressure in instrument exit steady
It is fixed.
3, the present invention is small in size, can wall hanging installation；Connector is few, easy to connect；Structure is simple, easy to maintain.
Detailed description of the invention
It, below will be in embodiment technical description for the clearer technical solution illustrated in technology of the embodiment of the present invention
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the invention
Example is applied, for those of ordinary skill in the art, without creative efforts, additionally it is possible to according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural diagram of the present invention.
Wherein, 1- relief valve, 2- regulating valve one, 3- regulating valve two, 4- flowmeter, 5- check valve, 6- Venturi.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Whole description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment during this is practical, those of ordinary skill in the art are obtained all without creative labor
Other embodiments shall fall within the protection scope of the present invention.
Embodiment
Shown in referring to Fig.1, the invention discloses a kind of constant pressure exhaust systems, including driving port, regulating valve 1, adjusting
Valve 23, Venturi 6, exhaust outlet and pressure relief vent.
Above-mentioned driving port, regulating valve 23, Venturi 6 and exhaust outlet are sequentially communicated.Drive port connection in high pressure
On the gas source for driving gas.Regulating valve 23 is connected with exhaust outlet signal, for acquiring the air pressure at exhaust outlet.Instrument outlet
Connection is arranged on the trunnion of Venturi 6.Regulating valve 1 wherein one end connection setting driving port and regulating valve 23 it
Between, other end connection is arranged between instrument outlet and the trunnion of Venturi 6.Regulating valve 1 is connected with instrument outlet signal,
Air pressure for acquisition instrument exit.Exhaust outlet is connected on torch or low pressure pipeline.The structure optimized above drives gas
The driving gas that mouth provides can be passed through in Venturi 6, and negative pressure is generated at its aditus laryngis, so that the gas of instrument outlet be sucked
In Venturi 6, and it is discharged together by the gas outlet of Venturi 6 with driving gas；Regulating valve 1 is capable of the pressure in measuring instrument exit
Power simultaneously makes it remain an atmospheric pressure, and when the subatmospheric power of pressure, regulating valve 1 increases air compensation, when pressure height
When atmospheric pressure, regulating valve 1 reduces air compensation, and if desired other operating pressures, equally can be realized；Regulating valve two
3 can monitor the pressure at exhaust outlet and guarantee the negative regulation in Venturi 6, and when the pressure was increased, regulating valve 23 increases
Supply pressure, when pressure is reduced, regulating valve 23 reduces supply pressure.
As a further improvement of the present invention, above-mentioned regulating valve 1 is direct-operated regulator.The execution of direct-operated regulator
Mechanism connection setting is between driving port and regulating valve 23.The signal source capsule connection setting of direct-operated regulator goes out in instrument
At mouthful.Direct-operated regulator can automatic pressure regulation, and external impetus is not needed, to conveniently realize the stream of system
Amount distribution and dynamic equilibrium, greatly simplify the debugging efforts of system；The system of purely mechanic component simultaneously is installed and used more square
Just.
As a further improvement of the present invention, above-mentioned regulating valve 23 is direct-operated regulator.The execution of direct-operated regulator
Mechanism connection is arranged between the air inlet of Venturi 6 and driving port and the connecting node of regulating valve 1.Direct-operated regulator
Signal source capsule connection be arranged at exhaust outlet.
As a further improvement of the present invention, between above-mentioned regulating valve 1 and the connecting node and Venturi 6 of instrument outlet
It is provided with and communicated with flowmeter 4.Flowmeter 4 can be limited by the tolerance of 6 negative pressure of Venturi sucking Venturi 6.
As a further improvement of the present invention, above-mentioned flowmeter 4 is spinner flowmeter.Its current limliting simultaneously, have reversed
The effect of gas flowing is hindered, back draught impact when reducing abnormal at Venturi 6.
As a further improvement of the present invention, flow-limiting valve is provided at the air inlet of above-mentioned flowmeter 4.Flow-limiting valve can be cut
Cutout becomes a mandarin the gas of meter 4, convenient to overhaul and replacement.
As a further improvement of the present invention, check valve is provided between above-mentioned regulating valve 23 and the air inlet of Venturi 6
5.When check valve 5 can be avoided abnormal, the back draught at Venturi 4 impacts regulating valve 23.
As a further improvement of the present invention, it is connected to and sets between above-mentioned instrument outlet and the signal acquisition point of regulating valve 1
It is equipped with relief valve 1.The other end connection of relief valve 1 is arranged on pressure relief vent.It is set in instrument outlet pressure beyond relief valve
When definite value, relief valve 1 is automatically turned on, and the gas in system can be discharged by pressure relief vent, guarantees the safety of each component and system.
As a further improvement of the present invention, above-mentioned pressure relief vent connection is arranged in an atmosphere.It can be realized unlimited row
Gas.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to consistent with principles disclosed herein and novel point
Widest scope.
Claims (10)
1. a kind of constant pressure exhaust system, which is characterized in that including driving port, regulating valve one, regulating valve two, Venturi, discharge
Outlet and instrument outlet；
The driving port, regulating valve two, Venturi and exhaust outlet are sequentially communicated setting, and the driving port connection setting exists
On the gas source of the driving gas of high pressure, the regulating valve two is connected with exhaust outlet signal, and the instrument outlet is arranged in text
On the trunnion of mound pipe；
Between driving port and regulating valve two, other end connection setting exists for wherein one end connection setting of the regulating valve one
Between instrument outlet and the trunnion of Venturi, the regulating valve one is connected with instrument outlet signal.
2. constant pressure exhaust system as described in claim 1, which is characterized in that the regulating valve one is direct-operated regulator, institute
Executing agency's connection setting of direct-operated regulator is stated between driving port and regulating valve two, the letter of the direct-operated regulator
The connection of number source capsule is arranged in instrument exit.
3. constant pressure exhaust system as described in claim 1, which is characterized in that the regulating valve two is direct-operated regulator, institute
The executing agency's connection for stating direct-operated regulator is arranged in the air inlet of Venturi and drives the connection section of port and regulating valve one
Between point, the signal source capsule connection of the direct-operated regulator is arranged at exhaust outlet.
4. constant pressure exhaust system as described in claim 1, which is characterized in that the connection section of the regulating valve one and instrument outlet
Flowmeter is provided with and communicated between point and Venturi.
5. constant pressure exhaust system as claimed in claim 4, which is characterized in that the flow is calculated as spinner flowmeter.
6. constant pressure exhaust system as claimed in claim 4, which is characterized in that current limiting is arranged at the air inlet of the flowmeter
Valve.
7. constant pressure exhaust system as described in claim 1, which is characterized in that the air inlet of the regulating valve two and Venturi it
Between be provided with check valve.
8. constant pressure exhaust system as described in claim 1, which is characterized in that the signal of the instrument outlet and regulating valve one is adopted
Relief valve is provided with and communicated between collection point.
9. constant pressure exhaust system as claimed in claim 8, which is characterized in that including pressure relief vent, the pressure relief vent connection
It is arranged on relief valve, the pressure relief vent and atmosphere.
10. instrument as described in claim 1 discharges constant-voltage system, which is characterized in that the exhaust outlet connection is arranged in fire
On torch or low pressure pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236858.0A CN109882734A (en) | 2019-03-27 | 2019-03-27 | A kind of constant pressure exhaust system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236858.0A CN109882734A (en) | 2019-03-27 | 2019-03-27 | A kind of constant pressure exhaust system |
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| Publication Number | Publication Date |
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| CN109882734A true CN109882734A (en) | 2019-06-14 |
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ID=66934507
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910236858.0A Pending CN109882734A (en) | 2019-03-27 | 2019-03-27 | A kind of constant pressure exhaust system |
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| CN (1) | CN109882734A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113701054A (en) * | 2020-05-20 | 2021-11-26 | 睿普工程股份有限公司 | Tail gas emission retrieves steady voltage control system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57130118A (en) * | 1981-02-03 | 1982-08-12 | Mitsui Toatsu Chem Inc | Control device for constant pressure of gas |
| JPH08232606A (en) * | 1995-02-27 | 1996-09-10 | Toshiba Corp | Turbine ground steam pressure controller |
| US20030102179A1 (en) * | 1997-05-28 | 2003-06-05 | Achten Peter Augustinus Johannes | Hydraulic drive system with constant pressure in pressure conduit |
| CN200953095Y (en) * | 2006-09-22 | 2007-09-26 | 宝山钢铁股份有限公司 | Automatic contant pressure regulator for pressure pipe network |
| CN104266805A (en) * | 2014-10-28 | 2015-01-07 | 中国核工业华兴建设有限公司 | Detection device and detection method for detecting air tightness of air-tight door of nuclear power plant by using constant pressure method |
| KR20150123731A (en) * | 2014-04-25 | 2015-11-04 | 정현욱 | Air cycle system |
| CN106997215A (en) * | 2017-03-28 | 2017-08-01 | 中国科学院南京地质古生物研究所 | The design of wide cut voltage-regulation voltage-stabilization and its method of work of open high-pressure reaction vessel |
| CN206818465U (en) * | 2017-06-21 | 2017-12-29 | 南京中电自动化有限公司 | A kind of constant-voltage equipment for instrument sampling |
| CN209856773U (en) * | 2019-03-27 | 2019-12-27 | 苏州祖宁自动化仪器仪表有限公司 | Constant-pressure discharge system |
-
2019
- 2019-03-27 CN CN201910236858.0A patent/CN109882734A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57130118A (en) * | 1981-02-03 | 1982-08-12 | Mitsui Toatsu Chem Inc | Control device for constant pressure of gas |
| JPH08232606A (en) * | 1995-02-27 | 1996-09-10 | Toshiba Corp | Turbine ground steam pressure controller |
| US20030102179A1 (en) * | 1997-05-28 | 2003-06-05 | Achten Peter Augustinus Johannes | Hydraulic drive system with constant pressure in pressure conduit |
| CN200953095Y (en) * | 2006-09-22 | 2007-09-26 | 宝山钢铁股份有限公司 | Automatic contant pressure regulator for pressure pipe network |
| KR20150123731A (en) * | 2014-04-25 | 2015-11-04 | 정현욱 | Air cycle system |
| CN104266805A (en) * | 2014-10-28 | 2015-01-07 | 中国核工业华兴建设有限公司 | Detection device and detection method for detecting air tightness of air-tight door of nuclear power plant by using constant pressure method |
| CN106997215A (en) * | 2017-03-28 | 2017-08-01 | 中国科学院南京地质古生物研究所 | The design of wide cut voltage-regulation voltage-stabilization and its method of work of open high-pressure reaction vessel |
| CN206818465U (en) * | 2017-06-21 | 2017-12-29 | 南京中电自动化有限公司 | A kind of constant-voltage equipment for instrument sampling |
| CN209856773U (en) * | 2019-03-27 | 2019-12-27 | 苏州祖宁自动化仪器仪表有限公司 | Constant-pressure discharge system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113701054A (en) * | 2020-05-20 | 2021-11-26 | 睿普工程股份有限公司 | Tail gas emission retrieves steady voltage control system |
| CN113701054B (en) * | 2020-05-20 | 2023-05-09 | 睿普工程股份有限公司 | Tail gas emission recovery voltage stabilization control system |
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