CN111831021A - Pressure control device and pressure regulating system - Google Patents
Pressure control device and pressure regulating system Download PDFInfo
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- CN111831021A CN111831021A CN201910309793.8A CN201910309793A CN111831021A CN 111831021 A CN111831021 A CN 111831021A CN 201910309793 A CN201910309793 A CN 201910309793A CN 111831021 A CN111831021 A CN 111831021A
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- pressure
- fluid
- conversion device
- electrical conversion
- signal
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
- G05D16/2026—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means
Abstract
The invention discloses a pressure control device and a pressure regulating system. The pressure control apparatus includes: an electrical conversion device that converts an electrical signal to a pressure signal and controls the pressure of fluid to a pressure regulator, comprising: a fluid inlet for connecting to a conduit on the high pressure side of the pressure regulator; the fluid outlet is used for connecting a driving cavity of the pressure regulator; a discharge port for discharging the fluid within the electrical conversion device to reduce the fluid pressure within the electrical conversion device; the signal receiving element is used for receiving an external electric signal and converting the external electric signal into a pressure signal; the control element is connected with the signal receiving element and controls the opening of the discharge port according to the pressure signal; a first switching element provided on a fluid inlet side of the electrical conversion device and controlling on/off of a fluid in the pipe on the fluid inlet side of the electrical conversion device; and the one-way flow limiting element is arranged on the fluid outlet side of the electrical conversion device and limits the fluid on the fluid outlet side of the electrical conversion device to flow towards the direction of the electrical conversion device.
Description
Technical Field
The invention relates to a pressure control device and a pressure regulating system with the same.
Background
A pressure regulator is a device that maintains a specified pressure at its fluid outlet by automatically changing the flow of fluid through the pressure regulator. Generally, the method is classified into a direct action type and an indirect action type. Although the existing pressure regulator can change the flow of fluid passing through the pressure regulator, the pressure of the changed fluid flowing out is basically a fixed value, and the pressure of the fluid on the fluid outlet side of the pressure regulator is difficult to adjust after the pressure regulator is installed.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide a pressure control device for controlling the fluid pressure of a pipeline and a pressure regulating system with the pressure control device. The pressure control device can control the pressure in a driving cavity of a pressure regulator in the pressure regulating system so as to change the pressure of fluid flowing out of a low-pressure side of the pressure regulator.
According to an aspect of the present disclosure, there is provided a pressure control apparatus for controlling a pressure of a fluid of a pipe, the pressure control apparatus including: an electrical conversion device that converts an electrical signal to a pressure signal and controls the pressure of the fluid to the pressure regulator, the electrical conversion element comprising: a fluid inlet for connecting to a conduit on the high pressure side of the pressure regulator; the fluid outlet is used for connecting a driving cavity of the pressure regulator; a discharge port for discharging fluid within the electrical conversion device to reduce a fluid pressure within the electrical conversion device; the signal receiving element is used for receiving an external electric signal and converting the received external electric signal into a pressure intensity signal; the control element is connected with the signal receiving element and controls the opening of the discharge port according to the pressure signal; a first switching element provided on a fluid inlet side of the electrical conversion device for controlling on/off of a fluid in a pipe on the fluid inlet side of the electrical conversion device; and the one-way flow limiting element is arranged on the fluid outlet side of the electrical conversion device and is used for limiting the fluid on the fluid outlet side of the electrical conversion device to flow towards the direction of the electrical conversion device.
In a pressure control apparatus according to an aspect of the present disclosure, the pressure control apparatus further includes a venting member disposed at an outlet side of the one-way flow restriction member to vent fluid in a pipe at the outlet side of the one-way flow restriction member.
In the pressure control device according to one aspect of the present disclosure, the air bleeding member is a bleed valve.
In the pressure control device according to one aspect of the present disclosure, the one-way flow restriction element is a one-way valve.
In the pressure control apparatus according to an aspect of the present disclosure, the first switching element is a solenoid valve that receives an external electrical signal through remote data transmission and controls on/off of fluid in a pipe according to the received external electrical signal.
In the pressure control apparatus according to an aspect of the present disclosure, the pressure control apparatus further includes a filter provided between the first switching element and the electrical conversion device.
In the pressure control apparatus according to an aspect of the present disclosure, the pressure control apparatus further includes a pressure reducing valve provided between the first switching element and the electrical conversion device.
In the pressure control apparatus according to an aspect of the present disclosure, the pressure control apparatus further includes a needle valve provided on a fluid outlet side of the electrical conversion device.
In the pressure control apparatus according to an aspect of the present disclosure, the signal receiving element receives an external electrical signal through remote data transmission and converts the received external electrical signal into a pressure signal.
In the pressure control apparatus according to an aspect of the present disclosure, the pressure control apparatus further includes a plurality of pressure detection devices that detect fluid pressures in the pipes at the fluid inlet and the fluid outlet sides of the electrical conversion device, respectively.
There is also provided according to another aspect of the present disclosure a pressure regulating system, including: a pressure regulator including a drive cavity; and the fluid outlet of the pressure control device is connected to the driving cavity of the pressure regulator.
In a pressure regulating system according to another aspect of the present disclosure, the pressure regulating system further includes a second switching element, which is an on-off ball valve disposed on a fluid inlet side of the pressure control device.
In the pressure regulating system according to another aspect of the present disclosure, the fluid outlet of the electrical conversion device is further connected to a low-pressure fluid conduit of a low-pressure side of the pressure regulator.
Compared with the prior art, in the pressure control device and the pressure regulating system with the pressure control device, the pressure control device can effectively control the pressure regulator of the pressure regulating system to change the fluid pressure flowing through the pressure regulator, and the pressure control device is provided with the one-way limiting element, so that the pressure control device can be prevented from influencing the regulation of the pressure regulator on the fluid pressure due to power loss, device faults or communication faults and the like, and the safe operation of the whole pressure regulating system is ensured. In addition, the pressure control device also has the advantages of simple structure, convenience in installation and the like, and has a wide application range.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural view showing a pressure control apparatus of an embodiment of the present invention;
fig. 2 is a schematic structural view showing an electrical conversion device of the pressure control apparatus of the embodiment of the present invention; and
fig. 3 is a schematic structural diagram showing a voltage regulation system according to an embodiment of the present invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In some instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring the invention.
According to the gist of the present invention, the pressure control apparatus of the present invention for controlling a pressure of a fluid of a pipe includes: an electrical conversion device that converts an electrical signal to a pressure signal and controls the pressure of the fluid to the pressure regulator, the electrical conversion element comprising: a fluid inlet for connecting to a conduit on the high pressure side of the pressure regulator; the fluid outlet is used for connecting a driving cavity of the pressure regulator; a discharge port for discharging fluid within the electrical conversion device to reduce a fluid pressure within the electrical conversion device; the signal receiving element is used for receiving an external electric signal and converting the received external electric signal into a pressure intensity signal; the control element is connected with the signal receiving element and controls the opening of the discharge port according to the pressure signal; a first switching element provided on a fluid inlet side of the electrical conversion device for controlling on/off of a fluid in a pipe on the fluid inlet side of the electrical conversion device; and the one-way flow limiting element is arranged on the fluid outlet side of the electrical conversion device and is used for limiting the fluid on the fluid outlet side of the electrical conversion device to flow towards the direction of the electrical conversion device.
The technical contents of the present invention will be further described with reference to the accompanying drawings and examples.
Referring to fig. 1, a schematic structural diagram of a pressure control apparatus according to an embodiment of the invention is shown. It should be noted that the pressure control device of the present invention is mainly used for controlling the pressure of the fluid in the pipeline. The pressure control device is mainly applied to pressure control of natural gas in a natural gas pipeline, and therefore, in the following embodiments, a case where a fluid in the pipeline is the natural gas is mainly described. In a preferred embodiment of the present invention, the pressure control apparatus mainly includes an electrical conversion device 1, a first switching element, and a one-way current limiting element.
Specifically, the electrical conversion device 1 converts an electrical signal to a pressure signal and controls the fluid pressure to the pressure regulator. Referring to fig. 2, a schematic structural diagram of an electrical conversion device of a pressure control apparatus according to an embodiment of the present invention is shown. As shown in fig. 2, the electrical conversion element 1 includes: a fluid inlet 11, a fluid outlet 12, a discharge outlet 13, a signal receiving element 14, and a control element.
Wherein the fluid inlet 11 is used for connecting a pipeline on the high pressure side of the pressure regulator. The fluid outlet 12 is for connection to a drive chamber of a pressure regulator. After the fluid inlet 11 is connected to the high-pressure side pipeline of the pressure regulator, when the high-pressure fluid in the high-pressure side pipeline of the pressure regulator flows into the fluid inlet 11 of the electrical conversion device 1 and flows out of the fluid outlet 12 to enter the driving cavity of the pressure regulator, the fluid pressure in the driving cavity of the pressure regulator can be increased, so that the fluid pressure in the low-pressure side pipeline, which flows out after the high-pressure fluid in the high-pressure side pipeline of the pressure regulator passes through the pressure regulator, is increased.
The discharge port 13 is used to discharge the fluid inside the electrical conversion device 1 to reduce the fluid pressure inside the electrical conversion device 1. The discharge port 13 can discharge the fluid in the electrical conversion device 1, and when the fluid in the electrical conversion device 1 is partially discharged through the discharge port 13, the pressure of the fluid in the electrical conversion device 1 decreases, and the pressure of the fluid flowing into the driving chamber of the pressure regulator decreases, so that the increase of the pressure of the fluid in the pipe on the low pressure side, which is the pressure of the fluid flowing out after the high pressure fluid in the pipe on the high pressure side of the pressure regulator passes through the pressure regulator, can be reduced. Further, the amount of increase in the pressure of the fluid in the pipe flowing out of the low pressure side of the pressure regulator can be controlled according to the amount of fluid discharged from the discharge port 13. Here, the control of the amount of the fluid discharged from the discharge port 13 may be realized by, for example, controlling the opening degree of the discharge port 13 in the present embodiment.
The signal receiving element 14 is configured to receive an external electrical signal and convert the received external electrical signal into a pressure signal. In a preferred embodiment of the present invention, the signal receiving element receives an external electrical signal through remote data transmission, for example, a signal may be sent to the signal receiving element through a remote real-time monitoring system, so as to realize remote control of the fluid pressure in the pipe network. The signal receiving element 14 converts the received external electric signal into a pressure signal to control the pressure inside the electric conversion device 1 by the pressure signal.
The control element (not shown in the figure) is connected to the signal receiving element 14 and controls the opening degree of the discharge port 13 according to the pressure signal. The control element may be any element that controls the opening of the discharge port 13, such as a movable valve, and is not described herein.
The first switching element is disposed on the fluid inlet side of the electrical conversion device for controlling the fluid in the conduit on the fluid inlet side of the electrical conversion device 1. In the embodiment shown in fig. 1, the first switching element is optionally a solenoid valve 2. The electromagnetic valve 2 can receive an external electric signal through remote data transmission and control the on-off of fluid in the pipeline according to the received external electric signal. Wherein, more preferably, the solenoid valve 2 may be set to be substantially in a normally closed state, and opened only when it receives an external electric signal; in other words, the solenoid valve 2 is arranged to allow the passage of fluid inside the duct only when it receives an external electric signal. In the embodiment shown in fig. 1, the fluid inlet side of the electrical conversion device 1 is the left side, and the electromagnetic valve 2 is disposed in the high-pressure gas pipeline on the left side of the electrical conversion device 1 to control the on/off of the high-pressure gas in the pipeline.
The one-way flow restriction element is disposed on the fluid outlet side of the electrical conversion device 1, and is configured to restrict a flow of the fluid on the fluid outlet side of the electrical conversion device 1 toward the electrical conversion device 1. In particular, in the embodiment shown in fig. 1, the one-way restriction is a one-way valve 3. The check valve 3 is provided in the right pipe of the electrical conversion device 1, and the fluid flowing out of the fluid outlet 12 of the electrical conversion device 1 passes through the check valve 3, is restricted by the check valve 3, and cannot flow back to the electrical conversion device 1. The check valve 3 can prevent the adverse current, guarantees the fluid pressure in the pipeline of the fluid outlet side of the electric conversion device 1 to the drive chamber of the pressure regulator, avoids influencing the pressure control of the pressure regulator because of the damage of other components and parts in the pipeline, plays the protective action to pipeline and whole pressure regulating system.
It should be noted that in other embodiments of the present invention, the one-way restriction element may also be a solenoid valve, which is opened only when the fluid pressure in the conduit at the fluid inlet side is higher than the fluid pressure in the conduit at the fluid outlet side, so as to achieve the effect of one-way restriction. This embodiment can achieve similar effects as well, and is not described in detail herein.
Further, in an embodiment of the present invention, the pressure control device further comprises an air exhaust element. The exhaust element is arranged at the outlet side of the one-way flow limiting element and is used for exhausting the fluid in the pipeline at the outlet side of the one-way flow limiting element. Specifically, in the embodiment shown in FIG. 1, the exhaust element is a bleed valve 4. The bleeding valve 4 is disposed in the pipeline on the fluid outlet side of the check valve 3, and can reduce the pressure of the gas in the pipeline by discharging the gas in the pipeline, and further, when the pressure of the gas in the pipeline on the fluid outlet side of the check valve 3 is not changed, the pressure of the gas in the pipeline on the fluid outlet side of the check valve 3 can be reduced by opening the bleeding valve 4, so that the pressure of the gas in the driving cavity of the pressure regulator connected with the bleeding valve is reduced, and further, the pressure of the fluid in the pipeline on the low pressure side, which flows out after passing through the pressure regulator, of the high-pressure fluid in the pipeline on the high pressure side of the pressure regulator is reduced.
Further, in an embodiment of the present invention, the pressure control device further comprises a filter. The filter is disposed between the first switching element and the electrical conversion device. As shown in fig. 1, the filter 5 is disposed between the solenoid valve 2 and the fluid inlet 11 of the electrical conversion device 1, and the filter 5 can filter the fluid flowing into the electrical conversion device 1, remove impurities in the fluid in the pipeline, and protect the pipeline with a small diameter.
Further, in an embodiment of the present invention, the pressure control device further includes a pressure reducing valve. The pressure reducing valve is disposed between the first switching element and the electrical conversion device. Specifically, in the embodiment shown in fig. 1, the pressure relief valve 6 is disposed between the filter 5 and the fluid inlet 11 of the electrical switching apparatus 1. It should be noted that, since the fluid inlet 11 of the electrical conversion device 1 is a pipe connected to the high-pressure side of the pressure regulator, and the pipe on the high-pressure side of the pressure regulator has a higher fluid pressure, the pressure reducing valve 6 may be disposed on the fluid inlet side of the electrical conversion device 1, and the pressure reducing valve 6 may convert the higher fluid pressure (first pressure) into a fluid having a lower pressure (second pressure, which is lower than the first pressure), and the first pressure and the second pressure are both constant values. It should be noted that, although the pressure reducing valve 6 is disposed between the filter 5 and the fluid inlet 11 of the electrical conversion device 1 in the embodiment shown in fig. 1, the present invention is not limited to this, and the positions between the pressure reducing valve 6 and the filter 5 may also be interchanged, that is, the high-pressure fluid is first subjected to pressure reduction and then flows into the filter 5 for filtering.
Further, in an embodiment of the present invention, the pressure control device further includes a needle valve. The needle valve may be disposed on a fluid outlet side of the electrical conversion device. In the embodiment shown in fig. 1, the needle valve 7 is provided on the fluid outlet side of the electrical conversion device 1, and the fluid flowing out of the electrical conversion device 1 passes through the needle valve 7 and flows toward the bleed valve 4 and the drive chamber of the pressure regulator. The needle valve 7 can further regulate the flow of fluid therethrough to protect the pipe.
Further, in an embodiment of the present invention, the pressure control apparatus further includes a plurality of pressure detecting devices. The plurality of pressure detecting devices may detect fluid pressures in the pipes at the fluid inlet and the fluid outlet sides of the electrical conversion device, respectively. In the embodiment shown in fig. 1, a pressure detecting device 81 is provided in the fluid inlet side piping of the electrical conversion device 1 and on the fluid inlet side of the solenoid valve 2 to detect the pressure of the fluid flowing to the pressure control means; the pressure detection device 82 is provided on the fluid outlet side of the check valve 3, and has detected the pressure of the fluid flowing out from the electrical conversion device 1. It should be noted that each pressure detection device of the pressure control apparatus may perform remote data collection, for example, send to a remote monitoring system, so as to monitor the fluid pressure in each pipeline in real time.
Further, the invention also provides a pressure regulating system. Fig. 3 is a schematic structural diagram of a voltage regulating system according to an embodiment of the present invention. The pressure regulating system at least comprises a pressure regulator 9 and the pressure control device shown in the figure 2. As shown in fig. 3, the regulator 9 is connected to a high-pressure fluid pipe 92 on one side and a low-pressure fluid pipe 93 on the other side. The regulator 9 also includes a drive chamber 91. The fluid outlet of the pressure control means is connected to the drive chamber 91 of the pressure regulator 9. More specifically, when the pressure control device inputs fluid into the driving chamber 91 to increase the fluid pressure in the driving chamber 91, the balance membrane above the driving chamber moves under the driving of the pressure, and further, the opening degree of the valve port inside the pressure regulator is increased to increase the fluid flow rate through the valve port, so as to increase the fluid pressure in the low-pressure fluid pipe 93 on the fluid outlet side of the pressure regulator 9. Accordingly, when the pressure control device discharges the fluid in the driving chamber 91, the pressure of the fluid in the driving chamber 91 is reduced, and the balance film moves under the action of the spring on the other side thereof, thereby driving the opening degree of the valve port inside the pressure regulator to be reduced to reduce the fluid flow rate through the valve port, so as to reduce the pressure of the fluid in the low-pressure fluid pipe 93 on the fluid outlet side of the pressure regulator 9. The pressure control device controls the pressure of the fluid flowing out of the fluid outlet side of the pressure regulator in the mode.
Further, in a preferred embodiment of the present invention, the voltage regulating system further includes a second switching element. In the embodiment shown in fig. 3, the second switching element is an on-off ball valve 20. The switching ball valve 20 is disposed on a fluid inlet side of the pressure control device, and is used to control the on/off of high-pressure fluid flowing to the pressure control device during the process of construction, maintenance, and repair.
Further, in the preferred embodiment shown in fig. 3, the fluid outlet of the electrical switching device is also connected to a low pressure fluid conduit 93 on the low pressure side of the pressure regulator. Furthermore, when the pressure regulating system is switched from self-operated operation (without external control) to remote regulating operation (receiving external control), the switching process is stable, and when the external remote regulating system fails in fault during remote regulating operation, the pressure regulator can still keep self-operated operation, thereby avoiding safety accidents.
Further, in the preferred embodiment shown in fig. 3, the pressure regulating system further includes a pressure detecting device 83 and a pressure detecting device 84. Among them, the pressure detection device 83 is provided on the high-pressure fluid pipe 92, and the pressure detection device 84 is provided on the low-pressure fluid pipe 93. The pressure in each pipeline in the pressure regulating system can be effectively monitored in real time through the pressure detecting devices 83 and 84 of the pressure regulating system and the pressure detecting devices 81 and 82 of the pressure control device.
In summary, in the pressure control device and the pressure regulating system having the pressure control device provided in the embodiments of the present invention, the pressure control device can effectively control the pressure regulator of the pressure regulating system to change the pressure of the fluid flowing through the pressure regulator, and the pressure control device has the one-way limiting element, so that the pressure control device can prevent the pressure control device from affecting the regulation of the pressure regulator on the pressure of the fluid due to power loss, device failure or communication failure, and the like, and thus the safe operation of the whole pressure regulating system is ensured. In addition, the pressure control device also has the advantages of simple structure, convenience in installation and the like, and has a wide application range.
Although the invention has been described with respect to alternative embodiments, it is not intended to be limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention is subject to the scope defined by the claims.
Claims (13)
1. A pressure control apparatus for controlling a pressure of a fluid in a conduit, the pressure control apparatus comprising:
an electrical conversion device that converts an electrical signal to a pressure signal and controls the pressure of the fluid to the pressure regulator, the electrical conversion element comprising:
a fluid inlet for connecting to a conduit on the high pressure side of the pressure regulator;
the fluid outlet is used for connecting a driving cavity of the pressure regulator;
a discharge port for discharging fluid within the electrical conversion device to reduce a fluid pressure within the electrical conversion device;
the signal receiving element is used for receiving an external electric signal and converting the received external electric signal into a pressure intensity signal;
the control element is connected with the signal receiving element and controls the opening of the discharge port according to the pressure signal;
a first switching element provided on a fluid inlet side of the electrical conversion device for controlling on/off of a fluid in a pipe on the fluid inlet side of the electrical conversion device;
and the one-way flow limiting element is arranged on the fluid outlet side of the electrical conversion device and is used for limiting the fluid on the fluid outlet side of the electrical conversion device to flow towards the direction of the electrical conversion device.
2. A pressure control device as recited in claim 1, further comprising a venting member disposed at an outlet side of the one-way restriction for venting fluid in a conduit at the outlet side of the one-way restriction.
3. A pressure control device as recited in claim 2, wherein the vent member is a bleed valve.
4. A pressure control device as recited in claim 1, wherein the one-way flow restriction element is a one-way valve.
5. A pressure control apparatus as recited in claim 1, wherein the first switching element is a solenoid valve that receives an external electrical signal via remote data transmission and controls the opening and closing of the fluid in the conduit based on the received external electrical signal.
6. A pressure control apparatus as recited in claim 1, further comprising a filter disposed between the first switching element and the electrical switching device.
7. A pressure control apparatus as recited in claim 1, further comprising a pressure relief valve disposed between the first switching element and the electrical switching device.
8. A pressure control apparatus as recited in claim 1, further comprising a needle valve disposed on a fluid outlet side of the electrical switching device.
9. A pressure control apparatus as recited in claim 1, wherein the signal receiving member receives an external electrical signal through remote data transmission and converts the received external electrical signal into a pressure signal.
10. A pressure control apparatus as recited in claim 1, further comprising a plurality of pressure sensing devices that sense fluid pressures within the conduits at the fluid inlet and fluid outlet sides of the electrical switching device, respectively.
11. A pressure regulating system, characterized in that the pressure regulating system comprises:
a pressure regulator including a drive cavity; and
the pressure control device of any one of claims 1 to 10, a fluid outlet of the pressure control device being connected to a drive chamber of the pressure regulator.
12. The pressure regulating system of claim 11, further comprising a second switching element, wherein the second switching element is an on-off ball valve disposed on a fluid inlet side of the pressure control device.
13. The pressure regulating system of claim 11, wherein the fluid outlet of the electrical conversion device is further connected to a low pressure fluid conduit on the low pressure side of the pressure regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910309793.8A CN111831021A (en) | 2019-04-17 | 2019-04-17 | Pressure control device and pressure regulating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910309793.8A CN111831021A (en) | 2019-04-17 | 2019-04-17 | Pressure control device and pressure regulating system |
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| CN111831021A true CN111831021A (en) | 2020-10-27 |
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| CN201910309793.8A Pending CN111831021A (en) | 2019-04-17 | 2019-04-17 | Pressure control device and pressure regulating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295791A (en) * | 2022-03-09 | 2022-04-08 | 新疆广陆能源科技股份有限公司 | Tail gas detection system of thermal fluid generator and multi-medium thermal fluid generation system |
-
2019
- 2019-04-17 CN CN201910309793.8A patent/CN111831021A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295791A (en) * | 2022-03-09 | 2022-04-08 | 新疆广陆能源科技股份有限公司 | Tail gas detection system of thermal fluid generator and multi-medium thermal fluid generation system |
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