CN209856773U - Constant-pressure discharge system - Google Patents
Constant-pressure discharge system Download PDFInfo
- Publication number
- CN209856773U CN209856773U CN201920397917.8U CN201920397917U CN209856773U CN 209856773 U CN209856773 U CN 209856773U CN 201920397917 U CN201920397917 U CN 201920397917U CN 209856773 U CN209856773 U CN 209856773U
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- regulating valve
- outlet
- valve
- communicated
- venturi
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 75
- 238000004891 communication Methods 0.000 claims description 9
- 238000013022 venting Methods 0.000 claims description 2
- 239000013589 supplement Substances 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The utility model discloses a constant pressure discharge system, which comprises a driving gas port, a first regulating valve, a second regulating valve, a venturi tube, a discharge outlet and an instrument outlet; the driving air port, the second regulating valve, the venturi and the discharge outlet are sequentially communicated, the driving air port is communicated with and arranged on an air source of high-pressure driving air, the second regulating valve is in signal connection with the discharge outlet, and the instrument outlet is communicated and arranged on a throat pipe of the venturi; one end of the first regulating valve is communicated between the driving air port and the second regulating valve, the other end of the first regulating valve is communicated between the instrument outlet and the throat of the venturi tube, and the first regulating valve is in signal connection with the instrument outlet. It can be stable on presetting numerical value with the backpressure of instrument, has improved measuring accuracy nature greatly, simple structure, convenient to use.
Description
Technical Field
The utility model relates to a constant voltage system, concretely relates to constant voltage discharge system.
Background
In the online analysis industry of instruments, an outlet of the instrument needs to be communicated with the atmosphere to keep the stability of back pressure. With the increasing strictness of environmental protection, the outlet of the instrument does not allow the discharge of the atmosphere, but only into a flare or a low-pressure pipeline. However, the pressure in the torch or the low-pressure pipeline is higher than the atmospheric pressure, which can cause the back pressure of the instrument to be too high, influence the analysis of the instrument and distort the result; too high back pressure can also result in the gas in the meter not being able to escape; in addition, the gas pressure is not stable whether it is a flare or a low pressure pipe, which causes fluctuations in the analytical results of the meter.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a constant voltage discharge system, it can be with the back pressure of instrument stable on predetermineeing numerical value, improved measuring accuracy nature greatly, simple structure, convenient to use.
In order to solve the technical problem, the utility model provides a constant pressure discharge system, which comprises a driving air port, a first regulating valve, a second regulating valve, a venturi tube, a discharge outlet and an instrument outlet; the driving air port, the second regulating valve, the venturi and the discharge outlet are sequentially communicated, the driving air port is communicated with and arranged on an air source of high-pressure driving air, the second regulating valve is in signal connection with the discharge outlet, and the instrument outlet is communicated and arranged on a throat pipe of the venturi; one end of the first regulating valve is communicated between the driving air port and the second regulating valve, the other end of the first regulating valve is communicated between the instrument outlet and the throat of the venturi tube, and the first regulating valve is in signal connection with the instrument outlet.
Preferably, the first regulating valve is a self-operated regulating valve, an actuating mechanism of the self-operated regulating valve is arranged between the driving air port and the second regulating valve in a communicating mode, and a signal source pipe of the self-operated regulating valve is arranged at an instrument outlet in a communicating mode.
Preferably, the second regulating valve is a self-operated regulating valve, an actuating mechanism of the self-operated regulating valve is communicated and arranged between the air inlet of the venturi tube and a connecting node of the driving air port and the first regulating valve, and a signal source pipe of the self-operated regulating valve is communicated and arranged at the discharge outlet.
Preferably, a flow meter is arranged between a connection node of the first regulating valve and the outlet of the instrument and the venturi in a communication mode.
Preferably, the flow meter is a rotameter.
Preferably, a flow limiting valve is arranged at the air inlet of the flowmeter.
Preferably, a one-way valve is arranged between the second regulating valve and the air inlet of the venturi tube.
Preferably, a pressure relief valve is communicated between the meter outlet and the signal acquisition point of the first regulating valve.
Preferably, the pressure relief device comprises a pressure relief outlet, the pressure relief outlet is communicated with the pressure relief valve, and the pressure relief outlet is communicated with the atmosphere.
Preferably, the discharge outlet is arranged on a flare or a low-pressure pipeline in a communication mode.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a set up governing valve two, can increase venturi drive air pressure when the pressure of the gas outlet of venturi risees, keep venturi throat department stable in pressure, when venturi gas outlet pressure reduces, reduce venturi drive air pressure, keep venturi throat department stable in pressure.
2. The utility model has the advantages that by arranging the first regulating valve, the air supplement amount can be increased when the pressure at the outlet of the instrument is reduced, so that the pressure at the outlet of the instrument is stable; and when the pressure at the outlet of the instrument is increased, the air supplement amount is reduced, so that the pressure at the outlet of the instrument is stable.
3. The utility model has small volume and can be installed on wall; the number of connectors is small, and the connection is convenient; simple structure and convenient maintenance.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
The system comprises a pressure release valve 1, a regulating valve I2, a regulating valve II 3, a flowmeter 4, a one-way valve 5 and a venturi 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.
Examples
Referring to fig. 1, the utility model discloses a constant pressure discharge system, including drive gas port, governing valve 2, governing valve two 3, venturi 6, discharge outlet and pressure release export.
The driving air port, the second regulating valve 3, the venturi 6 and the discharge outlet are communicated in sequence. The driving air port is communicated with a high-pressure driving air source. And the second regulating valve 3 is in signal connection with the discharge outlet and is used for collecting the air pressure at the discharge outlet. The outlet of the instrument is communicated with the throat of the Venturi tube 6. One end of the first regulating valve 2 is communicated between the driving air port and the second regulating valve 3, and the other end of the first regulating valve is communicated between the outlet of the instrument and the throat of the venturi 6. And the regulating valve I2 is in signal connection with the outlet of the instrument and is used for collecting the air pressure at the outlet of the instrument. The discharge outlet is communicated with a torch or a low-pressure pipeline. With the optimized structure, the driving gas provided by the driving gas port can be introduced into the venturi tube 6, and negative pressure is generated at the throat of the venturi tube, so that the gas at the outlet of the instrument is sucked into the venturi tube 6 and is discharged from the gas outlet of the venturi tube 6 along with the driving gas; the first regulating valve 2 can monitor the pressure at the outlet of the instrument and keep the pressure at one atmosphere all the time, when the pressure is lower than the atmospheric pressure, the first regulating valve 2 increases the air supplement amount, when the pressure is higher than the atmospheric pressure, the first regulating valve 2 reduces the air supplement amount, and if other working pressures are needed, the same can be realized; the second regulating valve 3 is capable of monitoring the pressure at the discharge outlet and ensuring that the negative pressure in the venturi 6 is stable, the second regulating valve 3 increasing the supply pressure when the pressure increases, and the second regulating valve 3 decreasing the supply pressure when the pressure decreases.
As a further improvement of the present invention, the first adjusting valve 2 is a self-operated adjusting valve. And the actuating mechanism of the self-operated regulating valve is communicated and arranged between the driving air port and the second regulating valve 3. The signal source pipe of the self-operated regulating valve is communicated with the outlet of the instrument. The self-operated regulating valve can automatically regulate pressure without external power, thereby conveniently realizing flow distribution and dynamic balance of the system and greatly simplifying the debugging work of the system; meanwhile, the system of the pure mechanical parts is more convenient to install and use.
As a further improvement of the utility model, the second regulating valve 3 is a self-operated regulating valve. And an actuating mechanism of the self-operated regulating valve is communicated and arranged between the air inlet of the Venturi tube 6 and a connecting node of the driving air port and the regulating valve I2. The signal source pipe of the self-operated regulating valve is communicated with the discharge outlet.
As a further improvement of the utility model, the intercommunication is provided with flowmeter 4 between the connected node of above-mentioned governing valve 2 and instrument export and venturi 6. The flow meter 4 can limit the amount of air that is drawn into the venturi 6 by the venturi 6 under negative pressure.
As a further improvement of the present invention, the flow meter 4 is a rotameter. The flow limiting device has the function of reversely blocking gas flow while limiting the flow, and reduces the reverse airflow impact at the venturi tube 6 when in abnormal state.
As a further improvement of the present invention, the air inlet of the flow meter 4 is provided with a flow limiting valve. The flow-limiting valve can cut off the gas flowing into the flowmeter 4, and is convenient to overhaul and replace.
As a further improvement of the utility model, a one-way valve 5 is arranged between the second regulating valve 3 and the air inlet of the venturi tube 6. When the check valve 5 can avoid abnormality, the reverse airflow at the venturi 4 impacts the second regulating valve 3.
As a further improvement, the communication is provided with a pressure release valve 1 between the signal acquisition points of the instrument outlet and the regulating valve I2. The other end of the pressure relief valve 1 is communicated with the pressure relief outlet. When the pressure of the outlet of the instrument exceeds the set value of the pressure relief valve, the pressure relief valve 1 is automatically opened, and the gas in the system can be discharged from the pressure relief outlet, so that the safety of each part and the system is ensured.
As a further improvement of the utility model, the pressure relief outlet is communicated with the atmosphere. Which enables infinite venting.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A constant pressure discharge system is characterized by comprising a driving air port, a first regulating valve, a second regulating valve, a Venturi tube, a discharge outlet and an instrument outlet;
the driving air port, the second regulating valve, the venturi and the discharge outlet are sequentially communicated, the driving air port is communicated with and arranged on an air source of high-pressure driving air, the second regulating valve is in signal connection with the discharge outlet, and the instrument outlet is communicated and arranged on a throat pipe of the venturi;
one end of the first regulating valve is communicated between the driving air port and the second regulating valve, the other end of the first regulating valve is communicated between the instrument outlet and the throat of the venturi tube, and the first regulating valve is in signal connection with the instrument outlet.
2. The constant pressure drain system according to claim 1, wherein the first regulating valve is a self-operated regulating valve, the actuator of the self-operated regulating valve is communicatively disposed between the drive gas port and the second regulating valve, and the signal source pipe of the self-operated regulating valve is communicatively disposed at the meter outlet.
3. The constant pressure discharge system according to claim 1, wherein the second regulating valve is a self-operated regulating valve, the actuator of the self-operated regulating valve is disposed in communication between the inlet of the venturi tube and the connection node of the driving gas port and the first regulating valve, and the signal source pipe of the self-operated regulating valve is disposed in communication at the discharge outlet.
4. The constant pressure bleed system as in claim 1, wherein a flow meter is provided in communication between a junction of the regulator valve with the meter outlet and the venturi.
5. The constant pressure drainage system of claim 4, wherein the flow meter is a rotameter.
6. The constant pressure drainage system according to claim 4, wherein a flow restriction valve is provided at an air inlet of the flow meter.
7. The constant pressure discharge system according to claim 1, wherein a check valve is provided between said second regulating valve and the inlet of the venturi.
8. The constant pressure discharge system as claimed in claim 1, wherein a pressure relief valve is provided in communication between said meter outlet and a signal collection point of said first regulator valve.
9. The constant pressure venting system of claim 8, including a pressure relief vent, said vent being in communication with a pressure relief valve, said vent being in communication with the atmosphere.
10. The constant pressure discharge system of claim 1, wherein the discharge outlet is communicatively disposed on a flare or low pressure conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920397917.8U CN209856773U (en) | 2019-03-27 | 2019-03-27 | Constant-pressure discharge system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920397917.8U CN209856773U (en) | 2019-03-27 | 2019-03-27 | Constant-pressure discharge system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209856773U true CN209856773U (en) | 2019-12-27 |
Family
ID=68935472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920397917.8U Expired - Fee Related CN209856773U (en) | 2019-03-27 | 2019-03-27 | Constant-pressure discharge system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209856773U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882734A (en) * | 2019-03-27 | 2019-06-14 | 苏州祖宁自动化仪器仪表有限公司 | A kind of constant pressure exhaust system |
-
2019
- 2019-03-27 CN CN201920397917.8U patent/CN209856773U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882734A (en) * | 2019-03-27 | 2019-06-14 | 苏州祖宁自动化仪器仪表有限公司 | A kind of constant pressure exhaust system |
| CN109882734B (en) * | 2019-03-27 | 2024-10-18 | 苏州祖宁自动化仪器仪表有限公司 | Constant pressure discharge system |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |