CN112295425A - Purgable gas distribution system and method - Google Patents
Purgable gas distribution system and method Download PDFInfo
- Publication number
- CN112295425A CN112295425A CN201910713417.5A CN201910713417A CN112295425A CN 112295425 A CN112295425 A CN 112295425A CN 201910713417 A CN201910713417 A CN 201910713417A CN 112295425 A CN112295425 A CN 112295425A
- Authority
- CN
- China
- Prior art keywords
- gas
- air
- oxygen content
- fuel gas
- fuel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/10—Mixing gases with gases
- B01F23/19—Mixing systems, i.e. flow charts or diagrams; Arrangements, e.g. comprising controlling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/70—Mixers specially adapted for working at sub- or super-atmospheric pressure, e.g. combined with de-foaming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/10—Maintenance of mixers
- B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
- B01F35/1452—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids
- B01F35/1453—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids by means of jets of fluid, e.g. air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a cleanable air distribution system, comprising: a fuel gas cylinder; an air compressor; the fuel gas storage cylinder control valve is arranged on a connecting pipe of the fuel gas storage cylinder and the air compressor and is in a normally closed state; the air compressor control valve is arranged on a connecting pipe of the fuel gas storage cylinder and the air compressor and is in a normally closed state; the gas mixing device is used for mixing fuel gas and air and conveying the mixed gas to a gas using end through a gas conveying port of the gas distribution end; the gas distribution valve is arranged between the gas transmission port and the gas using port of the gas distribution end and used for receiving and distributing the mixed gas so as to recover residual gas at the gas using port or substandard gas; and the control terminal is used for controlling the fuel gas storage cylinder to stop conveying fuel gas, controlling the fuel gas storage cylinder control valve and the air compressor control valve to open and controlling the gas recovery outlet of the gas distribution valve to be communicated under the condition that the gas end stops using gas, so that residual gas in the gas distribution end pipeline is conveyed to the recovery processing end by the air conveyed by the air compressor.
Description
Technical Field
The invention relates to gas distribution of mixed gas, in particular to a gas distribution system and a method capable of being blown and swept.
Background
The gas distribution system of the fuel gas at the present stage is simple, generally, the air and the fuel gas are directly connected to the same pipeline for mixing, and the uniform mixing of the gas cannot be ensured. Meanwhile, safety measures are not provided, once the gas end is tempered and the like, the gas distribution device and the like are very easy to detonate, and safety accidents occur; and after the gas distribution system is used, the mixed fuel gas in the gas distribution system is remained, so that potential safety hazards are easily caused.
Disclosure of Invention
The invention aims to provide a cleanable gas distribution system and a cleanable gas distribution method, wherein a pipeline is led out from an air pipeline and connected with a fuel gas pipeline, and air can be blown to completely purge the gas distribution system after the gas distribution system is used, so that mixed gas is prevented from remaining, and potential safety hazards caused by the remaining mixed gas are eliminated.
In order to achieve the above object, an embodiment of the present invention provides a blowable gas distribution system, including:
a fuel gas cylinder;
an air compressor;
the fuel gas storage cylinder control valve is arranged on a connecting pipe between the fuel gas storage cylinder and the air compressor and is in a normally closed state;
the air compressor control valve is arranged on a connecting pipe between the fuel gas storage cylinder and the air compressor and is in a normally closed state;
the gas mixing device is respectively connected with the fuel gas storage cylinder and the air compressor and is used for mixing the received fuel gas and air and conveying the mixed gas to a gas using end through a gas transmission port of the gas distributing end;
the gas distribution valve is arranged between the gas transmission port and the gas using end of the gas distribution end and used for receiving and distributing the mixed gas transmitted by the gas distribution end so as to recover residual gas or substandard gas of the gas using end; and
and the control terminal is used for controlling the fuel gas storage cylinder to stop conveying fuel gas, controlling the fuel gas storage cylinder control valve and the air compressor control valve to be opened and controlling the gas recovery outlet of the gas distribution valve to be conducted under the condition that the gas end stops using gas, so that the residual gas in the gas distribution end pipeline is conveyed to the recovery processing end by the air conveyed by the air compressor.
Optionally, the system further comprises:
the fuel gas pipeline control valve is connected with the fuel gas storage cylinder and is used for controlling the gas transmission flow of the fuel gas storage cylinder;
the fuel gas controller is used for controlling the opening of the fuel gas pipeline control valve according to the control terminal control instruction so as to adjust the gas transmission flow of the fuel gas storage bottle;
the air pipeline control valve is connected with the air compressor and used for controlling the air transmission flow of the air compressor; and
and the air controller is used for controlling the opening of the air pipeline control valve according to the control terminal control instruction so as to adjust the air delivery flow of the air compressor.
Optionally, the system further comprises:
the oxygen content detection unit is connected to a gas transmission port of a gas distribution end of the gas distribution system and used for detecting whether the oxygen content of the mixed gas transmitted by the gas distribution end meets a set value or not;
the control terminal is further used for respectively adjusting flow parameters of fuel gas and air delivered by the air distribution end until the oxygen content meets a set value under the condition that the oxygen content does not meet the set value according to the detection result of the oxygen content detection unit;
the control terminal is further used for controlling the gas recovery outlet of the gas distribution valve to be communicated to convey the substandard gas to a recovery processing end under the condition that the oxygen content does not meet the set value, and controlling the gas distribution outlet of the gas distribution valve to be communicated to convey the substandard gas to a gas using end under the condition that the oxygen content meets the set value.
Optionally, in the case that the oxygen content does not meet the set value, adjusting the parameters of the fuel gas delivery and the air flow delivered by the gas distribution end respectively until the oxygen content meets the set value comprises:
under the condition that the oxygen content is higher than the set value, parameters of fuel gas delivery and air flow of the gas distribution end are respectively adjusted to increase the fuel gas flow and reduce the air flow until the oxygen content meets the set value; and
and in the case that the oxygen content is lower than the set value, adjusting parameters of fuel gas delivery and air flow of the gas distribution end respectively to reduce the fuel air flow and increase the air flow until the oxygen content meets the set value.
Optionally, the system further comprises:
and the flame arrester is arranged between the gas distribution valve and the gas using end and is used for preventing the gas using end from backfire.
Optionally, the system further comprises:
and the press machine is arranged between the gas distribution valve and the gas using end and is used for detecting and displaying the gas pressure of the gas distribution pipeline.
The embodiment of the invention also provides a cleanable gas distribution method, which comprises the following steps:
mixing fuel gas and air received by a gas mixing device and conveying the mixed gas to a gas using end through a gas transmission port of a gas distribution end, wherein the gas mixing device is respectively connected with a fuel gas storage bottle and the air compressor;
receiving the mixed gas conveyed by the gas distribution end through a gas distribution valve and shunting to recover residual gas at the gas utilization end or substandard gas; and
under the condition that the gas end stops using gas, controlling the fuel gas storage cylinder to stop conveying fuel gas, controlling a fuel gas storage cylinder control valve and an air compressor control valve to open, and controlling a gas recovery outlet of the gas distribution valve to be conducted so that air conveyed by the air compressor conveys residual gas in a gas distribution end pipeline to a recovery processing end;
the fuel gas storage cylinder control valve is arranged on a connecting pipe between the fuel gas storage cylinder and the air compressor, the fuel gas storage cylinder control valve is in a normally closed state, the air compressor control valve is arranged on the connecting pipe between the fuel gas storage cylinder and the air compressor, and the air compressor control valve is in a normally closed state.
Optionally, the method further includes:
detecting whether the oxygen content of the mixed gas conveyed by the gas distribution end meets a set value or not;
according to the detection result, under the condition that the oxygen content does not accord with the set value, flow parameters of fuel gas and air delivered by the air distribution end are respectively adjusted until the oxygen content accords with the set value; and
receiving the mixed gas conveyed by the gas distribution end and distributing the gas according to the detection result;
and under the condition that the oxygen content does not accord with the set value, controlling the gas recovery outlet of the gas distribution valve to be communicated so as to convey the substandard gas to a recovery processing end, and under the condition that the oxygen content accords with the set value, controlling the gas distribution outlet of the gas distribution valve to be communicated so as to convey the substandard gas to a gas using end.
Optionally, in the case that the oxygen content does not meet the set value, adjusting the parameters of the fuel gas delivery and the air flow delivered by the gas distribution end respectively until the oxygen content meets the set value comprises:
under the condition that the oxygen content is higher than the set value, parameters of fuel gas delivery and air flow of the gas distribution end are respectively adjusted to increase the fuel gas flow and reduce the air flow until the oxygen content meets the set value; and
and in the case that the oxygen content is lower than the set value, adjusting parameters of fuel gas delivery and air flow of the gas distribution end respectively to reduce the fuel air flow and increase the air flow until the oxygen content meets the set value.
Optionally, the method further includes:
and the gas using end is prevented from backfiring through a flame arrester, and the flame arrester is arranged between the gas distribution valve and the gas using end.
Through the technical scheme, a connecting pipe is led out from the air pipeline and connected to the fuel gas pipeline, namely the fuel gas storage cylinder and the air compressor are connected through the pipeline, and the fuel gas storage cylinder control valve and the air compressor control valve are respectively arranged on the connecting pipe. During the trial period of the gas distribution system, the fuel gas storage cylinder control valve and the air compressor control valve are in a normally closed state, and the gas mixing device is respectively connected with the fuel gas storage cylinder and the air compressor and used for mixing the received fuel gas and air and conveying the mixed gas to a gas using end through a gas transmission port of the gas distribution end. After the gas distribution system is used, namely under the condition that gas supply is stopped at the gas end, the fuel gas storage cylinder is controlled to stop conveying fuel gas, the fuel gas storage cylinder control valve and the air compressor control valve are controlled to be opened, and the gas recovery outlet of the gas distribution valve is controlled to be communicated, so that residual gas in a gas distribution end pipeline is conveyed to a recovery processing end by air conveyed by the air compressor, the gas distribution system can be comprehensively purged through the air, mixed gas is prevented from remaining, and potential safety hazards are eliminated.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
fig. 1 is a schematic structural diagram of a gas distribution system provided in an embodiment of the present invention;
FIG. 2 is a schematic diagram of a basic structure of a blowable gas distribution system provided by an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a blowable gas distribution system provided by an embodiment of the invention.
Description of the reference numerals
1 fuel gas bomb 2 air compressor
3 fuel gas pipeline control valve 4 air pipeline control valve
5 fuel gas controller 6 air controller
7 gas mixing device 8 oxygen content detection unit
9 distribution valve 10 flame arrester
12 air compressor control valves of 11 pressure gauges
13 fuel gas storage cylinder control valve
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
Fig. 1 is a schematic diagram illustrating a basic configuration of an air distribution system according to an embodiment of the present invention, and as shown in fig. 1, an air distribution end of the air distribution system may include a fuel gas cylinder 1, an air compressor 2, a fuel gas pipeline control valve 3, an air pipeline control valve 4, a fuel gas controller 5, an air controller 6, and an air mixing device 7; the fuel gas pipeline control valve 3 is connected with the fuel gas storage bottle 1 and is used for controlling the gas transmission flow of the fuel gas storage bottle 1, and the fuel gas controller 5 is used for controlling the opening of the fuel gas pipeline control valve 3 according to the control terminal control instruction so as to adjust the gas transmission flow of the fuel gas storage bottle 1; the air pipeline control valve 4 is connected with the air compressor 2 and used for controlling the air delivery flow of the air compressor 2, and the air controller 6 is used for controlling the opening of the air pipeline control valve 4 according to the control terminal control instruction so as to adjust the air delivery flow of the air compressor 2; the gas mixing device is respectively connected with a fuel gas pipeline control valve 3 and an air pipeline control valve 4 and is used for mixing the received fuel gas and air and conveying the mixed gas to an oxygen content detection unit 8 through a gas distribution end gas transmission port.
As shown in fig. 1, the gas distribution system may include an oxygen content detection unit 8, a control terminal, and a gas distribution valve, wherein the oxygen content detection unit 8 is connected to a gas transmission port of a gas distribution end of the gas distribution system, and detects whether an oxygen content of a mixed gas transmitted by the gas distribution end meets a set value. According to the detection result of the oxygen content detection unit 8, under the condition that the oxygen content of the mixed gas does not accord with the set value, the mixed gas currently conveyed by the gas distribution end is judged to be substandard gas, and the flow parameters of the fuel gas and the air conveyed by the gas distribution end are respectively adjusted until the oxygen content of the mixed gas obtained by mixing the fuel gas and the air accords with the set value.
According to the detection result of the oxygen content detection unit 8, under the condition that the oxygen content of the mixed gas delivered by the gas distribution end meets the set value, the control terminal judges that the mixed gas currently delivered by the gas distribution end is the gas up to the standard, and adjusts the state of the gas distribution valve 9 to control the conduction of a gas distribution outlet of the gas distribution valve 9, namely, the conduction of a pipeline between the gas distribution end and the gas using end is controlled, and the gas up to the standard is provided for the gas using end. And under the condition that the oxygen content of the mixed gas conveyed by the gas distribution end does not meet a set value, the control terminal judges that the mixed gas currently conveyed by the gas distribution end is a non-standard gas, and adjusts the state of the gas distribution valve to control the gas recovery outlet of the gas distribution valve 9 to be communicated so as to convey the non-standard gas to the recovery processing end.
Under the condition that the oxygen content does not meet the set value, respectively adjusting the parameters of the fuel gas delivery and the air flow delivered by the gas distribution end until the oxygen content meets the set value comprises the following steps:
under the condition that the oxygen content is higher than the set value, parameters of fuel gas delivery and air flow of the gas distribution end are respectively adjusted to increase the fuel gas flow and reduce the air flow until the oxygen content meets the set value; and
and in the case that the oxygen content is lower than the set value, adjusting parameters of fuel gas delivery and air flow of the gas distribution end respectively to reduce the fuel air flow and increase the air flow until the oxygen content meets the set value.
Exemplified with a formulation of 8.4% methane by volume in air:
starting an air compressor pipeline control valve 4, and starting an air compressor 2; opening a fuel gas pipeline control valve 3, and opening a fuel gas storage cylinder 1 (a methane gas cylinder with the gas purity volume of more than 98 percent is selected);
the fuel gas and the air respectively pass through the fuel controller 5 and the air controller 6 and then are mixed by the gas mixing device 7, the oxygen content detection unit 8 is used for measuring the mixed gas, when the volume of the mixed gas is 8.4 percent of methane in the air, the volume of the oxygen in the mixed gas is 19.236 percent, and the oxygen content measurement results have the following three conditions:
(1) if the oxygen content measurement result is higher than 19.236%, the control terminal modifies parameters of the fuel gas controller 5 and the air controller 6, increases the fuel gas flow, reduces the air flow until reaching 19.236%, during which, the gas distribution valve 9 (such as a three-way valve) closes the gas end passage, the gas recovery outlet of the gas distribution valve 9 is conducted to open the substandard gas treatment pipeline passage, and the substandard gas is sent to the treatment end; when the oxygen content measurement result reaches 19.236%, the gas distribution valve 9 closes the pipeline passage of the substandard gas treatment, and opens the gas end passage;
(2) the oxygen content measurement result is equal to 19.236%, the gas distribution valve 9 closes the gas treatment pipeline passage which does not reach the standard, and opens the gas end passage;
(3) when the oxygen content measurement result is lower than 19.236%, the control terminal modifies parameters of the fuel gas controller 5 and the air controller 6, reduces the fuel gas flow and increases the air flow until reaching 19.236%, during the period, the gas distribution valve 9 closes the gas end passage, the gas recovery outlet of the gas distribution valve 9 is communicated to open the substandard gas treatment pipeline passage, and the substandard gas is sent to the treatment end; when the oxygen content measurement result reaches 19.236%, the gas distribution valve 9 closes the gas treatment pipeline passage which does not reach the standard, and opens the gas end passage.
Fig. 2 shows a schematic diagram of a basic structure of a blowable air distribution system, as shown in fig. 2, the system may further include an air compressor control valve 12 and a fuel gas cylinder control valve 13, wherein a fuel gas pipeline connected to the fuel gas cylinder 1 is led out from an air pipeline at the air compressor 2, the air compressor control valve 12 is disposed on a connecting pipe between the air compressor 2 and the fuel gas cylinder 1 near an air compressor end, the fuel gas cylinder control valve 13 is disposed on a connecting pipe between the air compressor 2 and the fuel gas cylinder 1 near a fuel gas cylinder end, and the air compressor control valve 12 and the fuel gas cylinder control valve 13 are in a normally closed state. Under the condition that the gas end stops using gas, the control device controls the fuel gas storage cylinder 1 to stop conveying fuel gas, controls the normally closed air compressor control valve 12 and the fuel gas storage cylinder control valve 13 to be opened, namely, the fuel gas pipeline is connected and conducted with the air compressor, and controls the gas recovery outlet of the gas distribution valve 9 to be conducted, so that air conveyed by the air compressor comprehensively sweeps a gas distribution system, and residual mixed gas is swept to the recovery processing end.
Fig. 3 shows a schematic structural diagram of a gas distribution system according to an embodiment of the present invention, as shown in fig. 3, the gas distribution system has the above-mentioned oxygen content detection function and the above-mentioned purging function, specifically, during the use period of the gas distribution system, the oxygen content detection unit 8 detects whether the oxygen content of the mixed gas delivered by the gas delivery port of the gas distribution end meets a set value in real time, and the control terminal is configured to adjust flow parameters of the fuel gas and the air delivered by the gas distribution end respectively until the oxygen content meets the set value according to the detection result of the oxygen content detection unit 8 when the oxygen content of the mixed gas does not meet the set value, where the specific implementation manner is as follows:
starting an air compressor pipeline control valve 4, starting an air compressor 2, starting a fuel gas pipeline control valve 3 and starting a fuel gas storage cylinder 1;
after passing through the fuel controller 5 and the air controller 6, respectively, the gas and the air are mixed by the gas mixing device 7, the oxygen content detection unit 8 measures the mixed gas, and the oxygen content measurement results have the following three cases:
(1) if the oxygen content measurement result is higher than a set value (the oxygen content value obtained after the volume conversion of the fuel gas, hereinafter referred to as the set value for short), the control terminal modifies parameters of the fuel gas controller 5 and the air controller 6, increases the fuel gas flow, reduces the air flow until the oxygen content measurement result reaches the set value, during the period, the gas distribution valve 9 closes the gas end passage, the gas recovery outlet of the gas distribution valve 9 is conducted to open the substandard gas treatment pipeline passage, and the substandard gas is sent to the treatment end; when the oxygen content measurement result reaches a set value, the gas distribution valve 9 closes the gas treatment pipeline passage which does not reach the standard, and opens the gas end passage;
(2) when the oxygen content measurement result is equal to a set value, the gas distribution valve 9 closes the gas treatment pipeline passage which does not reach the standard, and opens the gas end passage;
(3) if the oxygen content measurement result is lower than the set value, the control terminal modifies parameters of the fuel gas controller 5 and the air controller 6, reduces the fuel gas flow and increases the air flow until the oxygen content measurement result reaches the set value, during the period, the gas distribution valve 9 closes the gas end passage, the gas recovery outlet of the gas distribution valve 9 is communicated to open the gas treatment pipeline passage which does not reach the standard, the gas which does not reach the standard is sent to the treatment end, and the gas end passage is closed; when the oxygen content measurement result reaches a set value, the gas distribution valve 9 closes the gas treatment pipeline passage which does not reach the standard, and opens the gas end passage.
A connecting pipe is led out from an air pipeline at the air distribution end to be connected with a fuel gas pipeline, an air compressor control valve 12 and a fuel gas storage cylinder control valve 13 are arranged on the connecting pipe, under the condition that the air end stops using air, a control device controls the fuel gas storage cylinder 1 to stop conveying fuel gas, the normally closed air compressor control valve 12 and the fuel gas storage cylinder control valve 13 are controlled to be opened, namely, the fuel gas pipeline is connected and conducted with the air compressor, and a gas recovery outlet of a gas distribution valve 9 is controlled to be conducted, so that air conveyed by the air compressor comprehensively sweeps the air distribution system, and residual mixed gas is swept to a recovery processing end.
As shown in fig. 3, the system may further comprise a flame arrester 10 and a press 11, wherein the flame arrester 10 may be disposed between the distribution valve 9 and the gas end to prevent safety accidents caused by backfiring of the gas end and reduce loss and casualties. This pressure gauge 11 can set up the distribution valve with between the gas end, can show the true pressure of distribution system after a series of processes, look up when being convenient for use gas, prevent because with too big a series of unnecessary troubles and accidents that cause of gas end pressure difference.
The embodiment of the invention also provides a gas distribution method, and specifically, in the using process of the gas distribution system, whether the oxygen content of the mixed gas conveyed by the gas distribution end meets a set value is detected in real time, and according to the detection result, under the condition that the oxygen content of the mixed gas does not meet the set value, the flow parameters of the fuel gas and the air conveyed by the gas distribution end are respectively adjusted until the oxygen content meets the set value. Wherein, when the oxygen content does not meet the set value, adjusting the parameters of the fuel gas delivery and the air flow delivered by the gas distribution end respectively until the oxygen content meets the set value comprises: under the condition that the oxygen content is higher than the set value, parameters of fuel gas delivery and air flow of the gas distribution end are respectively adjusted to increase the fuel gas flow and reduce the air flow until the oxygen content meets the set value; and under the condition that the oxygen content is lower than the set value, adjusting parameters of fuel gas delivery and air flow of the gas distribution end respectively to reduce the fuel air flow and increase the air flow until the oxygen content meets the set value. The gas distribution can be performed according to the detection result, wherein, when the oxygen content of the mixed gas does not meet the set value, the gas recovery outlet of the gas distribution valve 9 is controlled to be communicated to convey the gas which does not reach the standard to the recovery processing end, and when the oxygen content meets the set value, the gas distribution outlet of the gas distribution valve 9 is controlled to be communicated to convey the gas which reaches the standard to the gas using end.
The gas distribution method can also carry out flow distribution according to the gas using state of the gas using end, wherein under the condition that the gas using end stops using gas, the fuel gas storage cylinder 1 is controlled to stop conveying fuel gas, the fuel gas storage cylinder control valve 13 and the air compressor control valve 12 are controlled to be opened, and the gas recovery outlet of the gas distribution valve 9 is controlled to be conducted so that residual gas in a gas distribution end pipeline is conveyed to a recovery processing end by air conveyed by the air compressor 2, so that the gas distribution system is completely purged. Can also prevent the incident that causes with the gas end tempering through the spark arrester 10 of setting between distribution valve 9 and with the gas end, reduce loss and casualties, according to the setting at the distribution valve 9 with show the real pressure of distribution system after a series of processes with pressure gauge 11 between the gas end, look up when being convenient for with gas, prevent because too big a series of unnecessary troubles and accidents that cause with gas end pressure difference.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.
Those skilled in the art will understand that all or part of the steps in the method according to the above embodiments may be implemented by a program, which is stored in a storage medium and includes several instructions to enable a single chip, a chip, or a processor (processor) to execute all or part of the steps in the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.
Claims (10)
1. A blowable gas distribution system, comprising:
a fuel gas cylinder;
an air compressor;
the fuel gas storage cylinder control valve is arranged on a connecting pipe between the fuel gas storage cylinder and the air compressor and is in a normally closed state;
the air compressor control valve is arranged on a connecting pipe between the fuel gas storage cylinder and the air compressor and is in a normally closed state;
the gas mixing device is respectively connected with the fuel gas storage cylinder and the air compressor and is used for mixing the received fuel gas and air and conveying the mixed gas to a gas using end through a gas transmission port of the gas distributing end;
the gas distribution valve is arranged between the gas transmission port and the gas using end of the gas distribution end and used for receiving and distributing the mixed gas transmitted by the gas distribution end so as to recover residual gas or substandard gas of the gas using end; and
and the control terminal is used for controlling the fuel gas storage cylinder to stop conveying fuel gas, controlling the fuel gas storage cylinder control valve and the air compressor control valve to be opened and controlling the gas recovery outlet of the gas distribution valve to be conducted under the condition that the gas end stops using gas, so that the residual gas in the gas distribution end pipeline is conveyed to the recovery processing end by the air conveyed by the air compressor.
2. The system of claim 1, further comprising:
the fuel gas pipeline control valve is connected with the fuel gas storage cylinder and is used for controlling the gas transmission flow of the fuel gas storage cylinder;
the fuel gas controller is used for controlling the opening of the fuel gas pipeline control valve according to the control terminal control instruction so as to adjust the gas transmission flow of the fuel gas storage bottle;
the air pipeline control valve is connected with the air compressor and used for controlling the air transmission flow of the air compressor; and
and the air controller is used for controlling the opening of the air pipeline control valve according to the control terminal control instruction so as to adjust the air delivery flow of the air compressor.
3. The system of claim 1, further comprising:
the oxygen content detection unit is connected to a gas transmission port of a gas distribution end of the gas distribution system and used for detecting whether the oxygen content of the mixed gas transmitted by the gas distribution end meets a set value or not;
the control terminal is further used for respectively adjusting flow parameters of fuel gas and air delivered by the air distribution end until the oxygen content meets a set value under the condition that the oxygen content does not meet the set value according to the detection result of the oxygen content detection unit;
the control terminal is further used for controlling the gas recovery outlet of the gas distribution valve to be communicated to convey the substandard gas to a recovery processing end under the condition that the oxygen content does not meet the set value, and controlling the gas distribution outlet of the gas distribution valve to be communicated to convey the substandard gas to a gas using end under the condition that the oxygen content meets the set value.
4. The system of claim 3, wherein in the event that the oxygen content does not meet the set point, adjusting the gas distribution end delivery fuel gas and air flow parameters, respectively, until the oxygen content meets the set point comprises:
under the condition that the oxygen content is higher than the set value, parameters of fuel gas delivery and air flow of the gas distribution end are respectively adjusted to increase the fuel gas flow and reduce the air flow until the oxygen content meets the set value; and
and in the case that the oxygen content is lower than the set value, adjusting parameters of fuel gas delivery and air flow of the gas distribution end respectively to reduce the fuel air flow and increase the air flow until the oxygen content meets the set value.
5. The system of claim 1, further comprising:
and the flame arrester is arranged between the gas distribution valve and the gas using end and is used for preventing the gas using end from backfire.
6. The system of claim 1, further comprising:
and the pressure gauge is arranged between the gas distribution valve and the gas using end and is used for detecting and displaying the gas pressure of the gas distribution pipeline.
7. A method of purgable gas distribution, the method comprising:
mixing fuel gas and air received by a gas mixing device and conveying the mixed gas to a gas using end through a gas transmission port of a gas distribution end, wherein the gas mixing device is respectively connected with a fuel gas storage bottle and the air compressor;
receiving the mixed gas conveyed by the gas distribution end through a gas distribution valve and shunting to recover residual gas at the gas utilization end or substandard gas; and
under the condition that the gas end stops using gas, controlling the fuel gas storage cylinder to stop conveying fuel gas, controlling a fuel gas storage cylinder control valve and an air compressor control valve to open, and controlling a gas recovery outlet of the gas distribution valve to be conducted so that air conveyed by the air compressor conveys residual gas in a gas distribution end pipeline to a recovery processing end;
the fuel gas storage cylinder control valve is arranged on a connecting pipe between the fuel gas storage cylinder and the air compressor, the fuel gas storage cylinder control valve is in a normally closed state, the air compressor control valve is arranged on the connecting pipe between the fuel gas storage cylinder and the air compressor, and the air compressor control valve is in a normally closed state.
8. The method of claim 7, further comprising:
detecting whether the oxygen content of the mixed gas conveyed by the gas distribution end meets a set value or not;
according to the detection result, under the condition that the oxygen content does not accord with the set value, flow parameters of fuel gas and air delivered by the air distribution end are respectively adjusted until the oxygen content accords with the set value; and
receiving the mixed gas conveyed by the gas distribution end and distributing the gas according to the detection result;
and under the condition that the oxygen content does not accord with the set value, controlling the gas recovery outlet of the gas distribution valve to be communicated so as to convey the substandard gas to a recovery processing end, and under the condition that the oxygen content accords with the set value, controlling the gas distribution outlet of the gas distribution valve to be communicated so as to convey the substandard gas to a gas using end.
9. The method of claim 8, wherein in the event that the oxygen content does not meet the set point, adjusting the port fuel gas delivery and air flow parameters, respectively, until the oxygen content meets the set point comprises:
under the condition that the oxygen content is higher than the set value, parameters of fuel gas delivery and air flow of the gas distribution end are respectively adjusted to increase the fuel gas flow and reduce the air flow until the oxygen content meets the set value; and
and in the case that the oxygen content is lower than the set value, adjusting parameters of fuel gas delivery and air flow of the gas distribution end respectively to reduce the fuel air flow and increase the air flow until the oxygen content meets the set value.
10. The method of claim 7, further comprising:
flashback at the gas using end is prevented by a flame arrestor disposed between the gas distribution valve and the gas using end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910713417.5A CN112295425B (en) | 2019-08-02 | 2019-08-02 | Purging gas distribution system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910713417.5A CN112295425B (en) | 2019-08-02 | 2019-08-02 | Purging gas distribution system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112295425A true CN112295425A (en) | 2021-02-02 |
| CN112295425B CN112295425B (en) | 2023-05-09 |
Family
ID=74485532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910713417.5A Active CN112295425B (en) | 2019-08-02 | 2019-08-02 | Purging gas distribution system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112295425B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201543389U (en) * | 2009-11-27 | 2010-08-11 | 天津市华迈燃气技术发展有限公司 | Follow-up gas-air mixing device |
| CN202099382U (en) * | 2010-08-09 | 2012-01-04 | 上海蓝宝光电材料有限公司 | Gas control device for metallorganic chemical vapor deposition equipment |
| CN203963967U (en) * | 2014-06-11 | 2014-11-26 | 神华集团有限责任公司 | A kind of distribution purging with bypass causes cabinet |
| KR20150049399A (en) * | 2013-10-30 | 2015-05-08 | 현대하이스코 주식회사 | Fuel cell system with excellent eliminating effect on freezing material throughout air purging and method of controlling the same |
| CN105925751A (en) * | 2016-06-15 | 2016-09-07 | 江苏永钢集团有限公司 | Safety converter gas recycling system |
| CN206563294U (en) * | 2017-03-06 | 2017-10-17 | 上海速焰燃烧设备有限公司 | A kind of preposition oxygen amount is shown and control combustion system |
| CN108333290A (en) * | 2018-04-17 | 2018-07-27 | 河北工业大学 | A kind of test device and test method of cement kiln low-temperature denitration of flue gas catalyst sulfur resistive water resistance |
-
2019
- 2019-08-02 CN CN201910713417.5A patent/CN112295425B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201543389U (en) * | 2009-11-27 | 2010-08-11 | 天津市华迈燃气技术发展有限公司 | Follow-up gas-air mixing device |
| CN202099382U (en) * | 2010-08-09 | 2012-01-04 | 上海蓝宝光电材料有限公司 | Gas control device for metallorganic chemical vapor deposition equipment |
| KR20150049399A (en) * | 2013-10-30 | 2015-05-08 | 현대하이스코 주식회사 | Fuel cell system with excellent eliminating effect on freezing material throughout air purging and method of controlling the same |
| CN203963967U (en) * | 2014-06-11 | 2014-11-26 | 神华集团有限责任公司 | A kind of distribution purging with bypass causes cabinet |
| CN105925751A (en) * | 2016-06-15 | 2016-09-07 | 江苏永钢集团有限公司 | Safety converter gas recycling system |
| CN206563294U (en) * | 2017-03-06 | 2017-10-17 | 上海速焰燃烧设备有限公司 | A kind of preposition oxygen amount is shown and control combustion system |
| CN108333290A (en) * | 2018-04-17 | 2018-07-27 | 河北工业大学 | A kind of test device and test method of cement kiln low-temperature denitration of flue gas catalyst sulfur resistive water resistance |
Non-Patent Citations (1)
| Title |
|---|
| 宋希伟主编: "《火灾探测报警与消防通信》", 31 December 2011, 沈阳出版社, pages: 140 - 142 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112295425B (en) | 2023-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022247108A1 (en) | Intrinsically safe high-purity and high-pressure hydrogen environment material compatibility testing system and method | |
| CN101093056A (en) | Special gas storage tank | |
| CN112389277A (en) | Fuel cell vehicle and hydrogen safety control method, device and system thereof | |
| CN111129544A (en) | Hydrogen supply system applied to hydrogen fuel cell automobile and hydrogen fuel cell automobile | |
| CN113093820B (en) | Gas concentration stabilizing device and control method thereof | |
| CN105692541A (en) | Wharf oil and gas recycling security device and method | |
| CN112295425A (en) | Purgable gas distribution system and method | |
| CN112303627B (en) | Gas distribution system and method | |
| CN205964802U (en) | Active fire protection system | |
| CN104819994A (en) | Long-pipe-type explosion test device being adjustable in pressure and oxygen concentration and use method thereof | |
| US20240033552A1 (en) | Tank for pressurized flammable gas | |
| CN112722151A (en) | Marine hydrogen system | |
| CN213266245U (en) | Distribution system of tin bath nitrogen-hydrogen protective gas | |
| CN216079326U (en) | Atmospheric tower purge gas discharge system of methyl ethyl ketone device | |
| CN114060723A (en) | Safety protection pressure relief system for epitaxial process equipment and epitaxial process equipment | |
| CN212252705U (en) | High-energy discharge ignition device of combustor | |
| CN210965028U (en) | Automatic device and reaction system that add of anti-oxidant | |
| CN102980674A (en) | Intelligent protection method of thermocouple | |
| CN210795785U (en) | High-pressure nitrogen protection device for improving safety of cold hydrogenation process in polycrystalline silicon production | |
| CN206221092U (en) | The hydrogen supply device of fuel engine power generation machine | |
| KR20040006289A (en) | Hydrogen gas filling fail safe system for a hybride vehicle | |
| CN216896830U (en) | Hydrogen safety emptying device | |
| CN114112451A (en) | Flame arrester testing method and system | |
| CN219673972U (en) | Novel gas busbar and novel gas busbar system | |
| CN117628394A (en) | High-pressure hydrogen filling system with online analysis and flow control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230413 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Applicant after: CHINA PETROLEUM & CHEMICAL Corp. Applicant after: Sinopec Safety Engineering Research Institute Co.,Ltd. Address before: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Applicant before: CHINA PETROLEUM & CHEMICAL Corp. Applicant before: SINOPEC Research Institute OF SAFETY ENGINEERING |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |