CN103912704B - Gas Pressure Regulating Equipment and pressure regulation method - Google Patents
Gas Pressure Regulating Equipment and pressure regulation method Download PDFInfo
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- CN103912704B CN103912704B CN201410114258.4A CN201410114258A CN103912704B CN 103912704 B CN103912704 B CN 103912704B CN 201410114258 A CN201410114258 A CN 201410114258A CN 103912704 B CN103912704 B CN 103912704B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
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- General Engineering & Computer Science (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
A kind of Gas Pressure Regulating Equipment, including pressure regulator, the first switch valve, preregulator and pilot valve.Pressure regulator has upper chamber, lower chamber, inlet plenum and discharge chamber.Pilot valve has epicoele, lumen and cavity of resorption.First switch valve has the first air inlet, the first gas outlet, the first ratio pressure mouth and the first setting spring, and first sets spring for setting the first preset pressure.First air inlet, the first ratio pressure mouth are communicated to inlet plenum, and the first gas outlet is communicated to preregulator, and preregulator is respectively communicated to epicoele and lumen, epicoele is communicated to downstream pipe, downstream pipe is connected with discharge chamber, and lumen is communicated to lower chamber, and upper chamber is communicated to downstream pipe.Additionally, additionally provide the pressure regulation method of a kind of Gas Pressure Regulating Equipment.Above-mentioned Gas Pressure Regulating Equipment and pressure regulation method, it is to avoid the hypertonia or too low of upstream gas ductwork, relative timing supplies, to the adjustment of upstream gas ductwork pressure relatively in time, accurately, and, the cost of relatively remote control transmission & distribution gas puts into relatively low.
Description
Technical field
The present invention relates to gas transmission and distribution field, particularly relate to a kind of gas pressure regulating for regulating distribution pressure
Device and pressure regulation method.
Background technology
For the operation of urban pipe network, the pressure stability in pipe network is most important, and hypotony can affect
Use makings amount, and hypertonia can cause potential safety hazard.Resident's cooking and hot water for life, and public clothes
Business user etc. has a biggest lack of uniformity with gas, therefore gas-fueled vehicles, distributed combined heat and power generation and thermoelectric cold
Coproduction user, in city gas is applied, more act as the role of city gas pipe network peak regulation user, with
Reduce the pressure of gas-use low peak phase gas ductwork, eliminate safe hidden trouble.But, in actual applications, due to
Peak regulation user is not adopted an effective measure, cause there is peak regulation user with resident and public clothes with gas peak period
Business user robs the situation of gas or gas-use low peak phase peak regulation user does not use combustion gas to cause the pressure of gas ductwork
Too high situation, to pipe network with makings amount with cause safely considerable influence with gas.
Gas Pressure Regulating Equipment is the important component part in gas transmission and distribution field.But, traditional gas pressure regulating dress
Put, be only capable of under normal circumstances realizing the adjustment to outlet pressure, be i.e. only capable of realizing the combustion of Gas Pressure Regulating Equipment downstream
The regulation of gas pipe network pressure, it is difficult to realize the adjustment to inlet pressure, Gas Pressure Regulating Equipment upstream gas ductwork
Hypertonia or too low situation easily occur.Development along with gas transmission and distribution technology, although can be by right
Timing supply or the long-range transmission & distribution gas that controls of peak regulation user carry out the pressure of regulating gas pipe network, but, due to combustion
Gas user uses the time of combustion gas can follow without rule accurately with consumption, pressure regulation not in time, inaccurate, and remote
Process control transmission & distribution gas relatively costly, is unfavorable for promoting the use of.
Summary of the invention
Based on this, it is necessary to pressure mistake easily occurs in the upstream gas ductwork for traditional Gas Pressure Regulating Equipment
High or too low, regularly pressure regulation for gas supply not in time, inaccurate, and remotely control relatively costly the asking of transmission & distribution gas
Topic, it is provided that upstream pipe network gaseous-pressure can be adjusted by one, pressure regulation is timely, accurate, and cost is relatively
Low Gas Pressure Regulating Equipment.
A kind of Gas Pressure Regulating Equipment, including pressure regulator, the first switch valve, preregulator and pilot valve,
Described pressure regulator has upper chamber, lower chamber, epithelium, inlet plenum, discharge chamber, the described air inlet of connection
The valve port of room and described discharge chamber and spool, described epithelium splits described upper chamber and described lower chamber,
Described spool is connected with described epithelium, and follows described epithelium action, with valve port described on and off；
Described pilot valve has epicoele, lumen and cavity of resorption, described first switch valve have the first air inlet, first
Gas outlet, the first ratio pressure mouth and first set spring, and described first setting spring is used for setting described first and opens
Close the first preset pressure that valve is opened, set when the pressure of described first ratio pressure mouth sets spring more than described first
During fixed first preset pressure, described first switch valve is opened, and described first air inlet is given vent to anger with described first
Mouth conducting；
Described first air inlet, described first ratio pressure mouth are communicated to described inlet plenum, and described first gas outlet is even
Passing to described preregulator, described preregulator is respectively communicated to described epicoele and described lumen, and described epicoele connects
To downstream pipe, described downstream pipe is connected with described discharge chamber, and described lumen is communicated to described lower chamber,
Described upper chamber is communicated to described downstream pipe.
Wherein in an embodiment, also include that second switch valve, described second switch valve have the second air inlet
Mouth, the second gas outlet, the second ratio pressure mouth and second set spring, and described second sets spring is used for setting institute
State the second preset pressure that second switch valve is opened, set more than described second than the pressure of pressure mouth when described second
When determining the second preset pressure that spring sets, described second switch valve is opened, and described second air inlet is with described
Second gas outlet conducting；Described second air inlet is communicated to described inlet plenum, and described second than pressing mouth with described
Second gas outlet is respectively communicated to described preregulator, and described first preset pressure is more than described second preset pressure.
Wherein in an embodiment, described pressure regulator is inefficacy normally closed type pressure regulator, and described pilot valve was for losing efficacy
Normally closed type pilot valve, described first switch valve and second switch valve are inefficacy closing type switch valve.
Wherein in an embodiment, described pilot valve also has the adjusting screw rod for arranging pilot valve preset pressure,
Second preset pressure of described second switch valve is more than described pilot valve preset pressure.
Wherein in an embodiment, also include that manual switch valve, one end of described manual switch valve are connected to
Described inlet plenum, the other end is connected to described preregulator.
Wherein in an embodiment, also include that exhaust switch valve, described first gas outlet are communicated to described row
One end of exhaust switch valve, the other end of described exhaust switch valve is unsettled.
Additionally, additionally provide the pressure regulation method of a kind of Gas Pressure Regulating Equipment.
A kind of pressure regulation method according to Gas Pressure Regulating Equipment described above, comprises the following steps,
Obtain the first preset pressure of user preset；
Judge whether first be more than described first preset pressure than the pressure of pressure mouth；
The most described first switch valve is opened, and the pressure of the inlet plenum of pressure regulator is successively via described first
Switch valve, preregulator enter the lower chamber of described pressure regulator with pilot valve, drive to remove on epithelium band movable valve plug and open
Valve port, the inlet plenum of described pressure regulator turns on discharge chamber, supplies downstream pipe；
If it is not, the most described first switch valve cuts out.
Wherein in an embodiment, judging that described first is more than the described first default pressure than the pressure of pressure mouth
Power, after described first switch valve is opened, further comprising the steps of,
Obtain the second preset pressure of user preset；
Judge whether second be more than described second preset pressure than the pressure of pressure mouth；
The most described second switch valve is opened, and the pressure of the inlet plenum of pressure regulator is respectively via described first
Switch valve merges after described second switch valve, and enters described pressure regulator via preregulator after pilot valve successively
Lower chamber, drive to remove on epithelium band movable valve plug and open valve port；
If it is not, the most described second switch valve cuts out, the pressure of the inlet plenum of pressure regulator is via described first switch
Valve, preregulator enter the lower chamber of described pressure regulator with pilot valve, drive to remove on epithelium band movable valve plug and open valve port.
Wherein in an embodiment, judging that described first is less than the described first default pressure than the pressure of pressure mouth
Power, after described first switch valve cuts out, further comprising the steps of,
Obtain the second preset pressure of user preset；
Judge whether second be more than described second preset pressure than the pressure of pressure mouth；
The most described second switch valve is opened, and the pressure of the inlet plenum of pressure regulator is successively via described second
Enter the lower chamber of described pressure regulator after switch valve, preregulator and pilot valve, drive and remove on epithelium band movable valve plug
Open valve port；
If it is not, the most described second switch valve cuts out, described valve port is closed, and described pressure regulator stops
Downstream pipe is supplied.
Above-mentioned Gas Pressure Regulating Equipment and pressure regulation method are relatively big, i.e. in upstream at upstream gas ductwork pressure
When pressure is more than the first preset pressure, the spool of pressure regulator is opened, and valve port turns on, and supplies for downstream pipe,
Alleviate the pressure of upstream gas ductwork, it is to avoid the hypertonia of upstream gas ductwork；In upstream Gas Pipe
The pressure of net is less, and i.e. when the pressure of upstream is less than the first preset pressure, the spool of pressure regulator keeps
Close, stop supplying for downstream pipe, contribute to maintaining stablizing of upstream gas ductwork pressure, it is to avoid on
The pressure of trip gas ductwork is too small.The present invention sets first by the first setting spring of the first switch valve and presets
Pressure, compares than pressure and first preset pressure of pressure mouth detection pressure regulator inlet plenum by first, and
Adjust the pressure of upstream gas ductwork according to comparative result, thus keep stablizing of upstream gas ductwork pressure,
Relative timing supplies, and the adjustment to upstream gas ductwork pressure is relatively timely, accurate, and, relatively remote control
The cost of transmission & distribution gas processed puts into relatively low.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the Gas Pressure Regulating Equipment of an embodiment；
Fig. 2 is the flow chart of the pressure regulation method of the Gas Pressure Regulating Equipment of an embodiment；
Fig. 3 is the flow chart of the pressure regulation method of the Gas Pressure Regulating Equipment of another embodiment；
Fig. 4 is the flow chart of the pressure regulation method of the Gas Pressure Regulating Equipment of further embodiment.
Detailed description of the invention
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, in one embodiment, a kind of Gas Pressure Regulating Equipment, including pressure regulator 110, first
Switch valve 120, preregulator 130 and pilot valve 140.
Pressure regulator 110 has upper chamber, lower chamber, epithelium, inlet plenum, discharge chamber, connection inlet plenum and goes out
The valve port of air chamber and spool, epithelium segmentation upper chamber and lower chamber, spool is connected with epithelium, and follows
Epithelium action, with on and off valve port.Pressure regulator 110 is inefficacy normally closed type pressure regulator.
Pilot valve 140 has epicoele, lumen and cavity of resorption, the first switch valve 120 have the first air inlet, first
Gas outlet, the first ratio pressure mouth and first set spring, and first sets spring for setting the first switch valve 120
First preset pressure of unlatching, presets more than the first of the first setting spring setting than the pressure of pressure mouth when first
During pressure, the first switch valve 120 is opened, the first air inlet and the conducting of the first gas outlet.Pilot valve 140 also has
There is the adjusting screw rod for arranging pilot valve 140 preset pressure.Pilot valve 140 is inefficacy normally closed type pilot valve.First
Switch valve 120 is inefficacy closing type switch valve.
First air inlet, the first ratio pressure mouth are communicated to inlet plenum, and the first gas outlet is communicated to preregulator 130, in advance
Adjusting device 130 to be respectively communicated to epicoele and lumen, epicoele is communicated to downstream pipe, downstream pipe and discharge chamber phase
Connection, lumen is communicated to lower chamber, and upper chamber is communicated to downstream pipe.
Above-mentioned Gas Pressure Regulating Equipment is relatively big at upstream gas ductwork pressure, i.e. at upstream pressure more than the
During one preset pressure, the spool of pressure regulator 110 is opened, and valve port turns on, and supplies for downstream pipe, alleviates
The pressure of upstream gas ductwork, it is to avoid the hypertonia of upstream gas ductwork；Pressure at upstream gas ductwork
Power is less, and i.e. when the pressure of upstream is less than the first preset pressure, the spool of pressure regulator 110 keeps closing
Close, stop supplying for downstream pipe, contribute to maintaining the stablizing of upstream gas ductwork pressure, it is to avoid upstream
The pressure of gas ductwork is too small.It is pre-that the present invention sets first by the first setting spring of the first switch valve 120
If pressure, compare than pressure and first preset pressure of pressure mouth detection pressure regulator 110 inlet plenum by first
Relatively, and adjust the pressure of upstream gas ductwork according to comparative result, thus keep upstream gas ductwork pressure
Stable, relative timing supplies, and the adjustment to upstream gas ductwork pressure is relatively timely, accurate, and, relatively
The cost remotely controlling transmission & distribution gas puts into relatively low.
In the particular embodiment, Gas Pressure Regulating Equipment also includes second switch valve 150.Second switch valve 150
Having the second air inlet, the second gas outlet, the second ratio pressure mouth and the second setting spring, second sets spring uses
In setting the second preset pressure that second switch valve 150 is opened, set more than second than the pressure of pressure mouth when second
When determining the second preset pressure that spring sets, second switch valve 150 is opened, and the second air inlet and second is given vent to anger
Mouth conducting；Second air inlet is communicated to inlet plenum, and second is respectively communicated to presetting than pressure mouth and the second gas outlet
Device 130, the first preset pressure is more than the second preset pressure.Second switch valve 150 is inefficacy closing type switch valve,
Second preset pressure of second switch valve 150 is more than pilot valve 140 preset pressure.
When the pressure of upstream gas ductwork is more than the first preset pressure, first is more than first than the pressure of pressure mouth
During preset pressure, the first switch valve 120 is opened, and meanwhile, second is more than second than the pressure of pressure mouth presets pressure
Power, second switch valve 150 opens, and two switch valves are opened, and accelerate the tune to upstream gas ductwork pressure
Whole speed.When the pressure of upstream gas ductwork drops to below the first preset pressure, first than the pressure pressing mouth
Power is less than the first preset pressure, and the first switch valve 120 cuts out, but now the second ratio presses the pressure of mouth still
More than the second preset pressure, therefore second switch valve 150 allows and is in opening, and single switch valve is opened,
Slow down and upstream gas ductwork pressure is regulated the speed, contribute to making upstream gas ductwork pressure enter as early as possible
Steady statue, avoids upstream gas ductwork pressure when the critical point of the first preset pressure simultaneously, and first opens
The vibration of pressure regulator 110 spool that the open and close repeatedly of pass valve 120 causes.It addition, in upstream Gas Pipe
When the pressure of net drops to below the first preset pressure and is higher than the second preset pressure, second switch valve 150 is opened
Opening, the pressure of the second air inlet of second switch valve 150, the pressure of the second gas outlet and second are than pressure mouth
Pressure is identical, until the pressure of upstream gas ductwork drops to below the second preset pressure, second switch valve 150
Closing, the spool slowly closing of pressure regulator 110, the second gas outlet of second switch valve 150 is pressed with the second ratio
Mouthful rapid pressure drop to below the second preset pressure, the unlatching repeatedly of second switch valve 150 will not be produced
Close.
In the particular embodiment, Gas Pressure Regulating Equipment also includes manual switch valve 160 and exhaust switch valve 170,
One end of manual switch valve is connected to inlet plenum, and the other end is connected to preregulator 130.First gas outlet is communicated to
One end of exhaust switch valve 170, the other end of exhaust switch valve 170 is unsettled.Manual switch valve 160 and row
Exhaust switch valve 170 is for installing the debugging at initial stage and follow-up maintenance and repair.
Additionally, additionally provide the pressure regulation method of a kind of Gas Pressure Regulating Equipment.
As shown in Fig. 2, Fig. 3 and Fig. 4, in one embodiment, the pressure regulation method of a kind of Gas Pressure Regulating Equipment,
Use above-mentioned Gas Pressure Regulating Equipment to carry out pressure regulation, comprise the following steps,
Step S210, obtains the first preset pressure of user preset.Generally, staff is by the first switch
First setting spring of valve 120 carries out the setting of the first preset pressure, and it is pre-that the first switch valve 120 obtains first
If after pressure, compare, subsequently into step S220 than the pressure of pressure mouth with first.
Step S220, it is judged that whether first be more than the first preset pressure than the pressure of pressure mouth.Owing to first than pressure
Mouth is communicated to the inlet plenum of pressure regulator 110, and the inlet plenum of pressure regulator 110 is connected with upstream gas ductwork,
Successively, the pressure of the first ratio pressure mouth is the pressure of upstream gas ductwork.If first is more than than the pressure of pressure mouth
First preset pressure, then enter step S230.
Step S230, the first switch valve 120 opens, and the pressure of the inlet plenum of pressure regulator 110 is successively via
One switch valve 120, preregulator 130 and pilot valve 140 enter the lower chamber of pressure regulator 110, drive epithelium to drive
Removing on spool and open valve port, the inlet plenum of pressure regulator 110 turns on discharge chamber, supplies downstream pipe.If
First is less than the first preset pressure than the pressure of pressure mouth, then the first switch valve 120 cuts out.
Relatively big at upstream gas ductwork pressure, when upstream pressure is more than the first preset pressure, pressure regulator 110
Spool open, supply for downstream pipe, alleviate the pressure of upstream gas ductwork, it is to avoid upstream combustion gas
The hypertonia of pipe network；Less at the pressure of upstream gas ductwork, the pressure of upstream is preset less than first
During pressure, the spool of pressure regulator 110 remains turned-off, and stops supplying for downstream pipe, contributes to maintaining upstream
Stablizing of gas ductwork pressure, it is to avoid the pressure of upstream gas ductwork is too small.Relative timing supplies, to upper
The adjustment of trip gas ductwork pressure is relatively timely, accurate, and, the cost of relatively remote control transmission & distribution gas puts into
Relatively low.
In the particular embodiment, judging that first is more than the first preset pressure than the pressure of pressure mouth, first opens
It is after closing valve 120 unlatching, further comprising the steps of,
Step S310, obtains the second preset pressure preset.Generally, staff passes through second switch valve 120
The second setting spring carry out the setting of the first preset pressure, second switch valve 120 obtains the second preset pressure
After, compare, subsequently into step S320 than the pressure of pressure mouth with second.
Step S320, it is judged that whether second be more than the second preset pressure than the pressure of pressure mouth.The most then enter
Step S330；If it is not, then enter step S340.
Step S330, second switch valve 150 opens, and the pressure of the inlet plenum of pressure regulator 110 is respectively via
One switch valve 120 merges after second switch valve 150, and successively via after preregulator 130 and pilot valve 140
Enter the lower chamber of pressure regulator 110, drive to remove on epithelium band movable valve plug and open valve port, entering of pressure regulator 110
Air chamber turns on discharge chamber, supplies downstream pipe.
Step S340, second switch valve 150 cuts out, and the pressure of the inlet plenum of pressure regulator 110 is opened via first
Close valve 120, preregulator 130 and pilot valve 140 and enter the lower chamber of pressure regulator 110, drive epithelium band movable valve plug
On remove and open valve port, the inlet plenum of pressure regulator 110 turns on discharge chamber, supplies downstream pipe.
Certainly, in practice, if arranging the first preset pressure more than the second preset pressure, due to the
One is more than the first preset pressure than the pressure of pressure mouth, after the first switch valve 120 is opened, and the pressure of the second ratio pressure mouth
Power is the ratio pressure of pressure mouth equal to first, and therefore the pressure of the second specific pressure is more than the second preset pressure, therefore exists
First preset pressure, more than in the case of the second preset pressure, only exists the situation that second switch valve 150 is opened.
When the pressure of upstream gas ductwork is more than the first preset pressure, first is more than first than the pressure of pressure mouth
During preset pressure, the first switch valve 120 is opened, and meanwhile, second is more than second than the pressure of pressure mouth presets pressure
Power, second switch valve 150 opens, and two switch valves are opened, and accelerate the tune to upstream gas ductwork pressure
Whole speed.
In the particular embodiment, judging that first is less than the first preset pressure than the pressure of pressure mouth, first opens
It is after closing valve 120 closedown, further comprising the steps of,
Step S410, obtains the second preset pressure preset.
Step S420, it is judged that whether second be more than the second preset pressure than the pressure of pressure mouth.The most then enter
Step S430；If it is not, then enter step S440.
Step S430, second switch valve 150 opens, and the pressure of the inlet plenum of pressure regulator 110 is successively via
Enter the lower chamber of pressure regulator 110 after two switch valves 150, preregulator 130 and pilot valve 140, drive epithelium band
Removing on movable valve plug and open valve port, the inlet plenum of pressure regulator 110 turns on discharge chamber, supplies downstream pipe.
Step S440, then second switch valve 150 cuts out, and valve port is closed, and pressure regulator 110 stops
Downstream pipe is supplied.
When the pressure of upstream gas ductwork drops to below the first preset pressure, first is less than the pressure of pressure mouth
In the first preset pressure, the first switch valve 120 cuts out, but now second than pressure mouth pressure still above
Second preset pressure, therefore second switch valve 150 allows and is in opening, and single switch valve is opened, and slows down
Upstream gas ductwork pressure regulated the speed, contributes to making upstream gas ductwork pressure enter as early as possible stable
State, avoids upstream gas ductwork pressure when the critical point of the first preset pressure, the first switch valve simultaneously
The vibration of pressure regulator 110 spool that the open and close repeatedly of 120 causes.It addition, in the pressure of upstream gas ductwork
When power drops to below the first preset pressure and is higher than the second preset pressure, second switch valve 150 is opened, the
The pressure of the second air inlet of two switch valves 150, the pressure of the second gas outlet and second are than the pressure phase of pressure mouth
With, until the pressure of upstream gas ductwork drops to below the second preset pressure, second switch valve 150 cuts out,
The spool slowly closing of pressure regulator 110, the pressure of mouth is pressed with the second ratio in the second gas outlet of second switch valve 150
Power is dropped rapidly to below the second preset pressure, will not produce the open and close repeatedly of second switch valve 150.
Above-mentioned Gas Pressure Regulating Equipment and pressure regulation method, be mountable to the upstream of the gas ductwork of peak regulation user,
With the pressure of gas peak period gas ductwork less time stop to peak regulation user supply, it is ensured that the supply of other users
Quality；Start when the pressure of gas-use low peak phase gas ductwork is bigger, to adjusting user's supply, to contribute to alleviating
The pressure of gas ductwork, it is to avoid the pressure of gas ductwork excessive.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and
Improving, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is as the criterion.
Claims (5)
1. a Gas Pressure Regulating Equipment, it is characterised in that include pressure regulator, the first switch valve, preregulator with
Pilot valve,
Described pressure regulator has upper chamber, lower chamber, epithelium, inlet plenum, discharge chamber, the described air inlet of connection
The valve port of room and described discharge chamber and spool, described epithelium splits described upper chamber and described lower chamber,
Described spool is connected with described epithelium, and follows described epithelium action, with valve port described on and off；
Described pilot valve has epicoele, lumen and cavity of resorption, described first switch valve have the first air inlet, first
Gas outlet, the first ratio pressure mouth and first set spring, and described first setting spring is used for setting described first and opens
Close the first preset pressure that valve is opened, set when the pressure of described first ratio pressure mouth sets spring more than described first
During fixed first preset pressure, described first switch valve is opened, and described first air inlet is given vent to anger with described first
Mouth conducting；
Described first air inlet, described first ratio pressure mouth are communicated to described inlet plenum, and described first gas outlet is even
Passing to described preregulator, described preregulator is respectively communicated to described epicoele and described lumen, and described epicoele connects
To downstream pipe, described downstream pipe is connected with described discharge chamber, and described lumen is communicated to described lower chamber,
Described upper chamber is communicated to described downstream pipe；
Also include second switch valve, described second switch valve have the second air inlet, the second gas outlet, second
Setting spring than pressure mouth with second, described second sets spring for setting the of described second switch valve unlatching
Two preset pressure, preset more than the second of described second setting spring setting than the pressure of pressure mouth when described second
During pressure, described second switch valve is opened, described second air inlet and described second gas outlet conducting；Described
Second air inlet is communicated to described inlet plenum, and described second is respectively communicated to described second gas outlet than pressure mouth
Described preregulator, described first preset pressure is more than described second preset pressure.
Gas Pressure Regulating Equipment the most according to claim 1, it is characterised in that described pressure regulator was for losing efficacy
Normally closed type pressure regulator, described pilot valve is inefficacy normally closed type pilot valve, and described first switch valve and second switch valve are
Inefficacy closing type switch valve.
Gas Pressure Regulating Equipment the most according to claim 1, it is characterised in that described pilot valve also has use
In arranging the adjusting screw rod of pilot valve preset pressure, the second preset pressure of described second switch valve be more than described in lead
Valve preset pressure.
4. the pressure regulation method of a Gas Pressure Regulating Equipment as claimed in claim 1, it is characterised in that include
Following steps,
Obtain the first preset pressure of user preset；
Judge whether first be more than described first preset pressure than the pressure of pressure mouth；
The most described first switch valve is opened, and the pressure of the inlet plenum of pressure regulator is successively via described first
Switch valve, preregulator enter the lower chamber of described pressure regulator with pilot valve, drive to remove on epithelium band movable valve plug and open
Valve port, the inlet plenum of described pressure regulator turns on discharge chamber, supplies downstream pipe；
If it is not, the most described first switch valve cuts out；
Judging that described first is more than described first preset pressure than the pressure of pressure mouth, described first switch valve is opened
Qi Hou, further comprising the steps of,
Obtain the second preset pressure of user preset；
Judge whether second be more than described second preset pressure than the pressure of pressure mouth；
The most described second switch valve is opened, and the pressure of the inlet plenum of pressure regulator is respectively via described first
Switch valve merges after described second switch valve, and enters described pressure regulator via preregulator after pilot valve successively
Lower chamber, drive to remove on epithelium band movable valve plug and open valve port；
If it is not, the most described second switch valve cuts out, the pressure of the inlet plenum of pressure regulator is via described first switch
Valve, preregulator enter the lower chamber of described pressure regulator with pilot valve, drive to remove on epithelium band movable valve plug and open valve port.
5. the pressure regulation method of a Gas Pressure Regulating Equipment as claimed in claim 1, it is characterised in that include
Following steps,
Obtain the first preset pressure of user preset；
Judge whether first be more than described first preset pressure than the pressure of pressure mouth；
The most described first switch valve is opened, and the pressure of the inlet plenum of pressure regulator is successively via described first
Switch valve, preregulator enter the lower chamber of described pressure regulator with pilot valve, drive to remove on epithelium band movable valve plug and open
Valve port, the inlet plenum of described pressure regulator turns on discharge chamber, supplies downstream pipe；
If it is not, the most described first switch valve cuts out；
Judging that described first closes less than described first preset pressure, described first switch valve than the pressure of pressure mouth
It is after closing, further comprising the steps of,
Obtain the second preset pressure of user preset；
Judge whether second be more than described second preset pressure than the pressure of pressure mouth；
The most described second switch valve is opened, and the pressure of the inlet plenum of pressure regulator is successively via described second
Enter the lower chamber of described pressure regulator after switch valve, preregulator and pilot valve, drive and remove on epithelium band movable valve plug
Open valve port；
If it is not, the most described second switch valve cuts out, described valve port is closed, and described pressure regulator stops
Downstream pipe is supplied.
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| CN201410114258.4A CN103912704B (en) | 2014-03-25 | 2014-03-25 | Gas Pressure Regulating Equipment and pressure regulation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410114258.4A CN103912704B (en) | 2014-03-25 | 2014-03-25 | Gas Pressure Regulating Equipment and pressure regulation method |
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| CN103912704A CN103912704A (en) | 2014-07-09 |
| CN103912704B true CN103912704B (en) | 2016-08-17 |
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| CN111963738A (en) * | 2020-10-20 | 2020-11-20 | 四川九门科技股份有限公司 | Remote pressure monitoring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2934675Y (en) * | 2006-03-24 | 2007-08-15 | 广州三业科技有限公司 | Constant hoisting height/ check water pump dedicated valve |
| CN201548855U (en) * | 2009-12-08 | 2010-08-11 | 上海航天能源有限公司 | Pressure regulation control system |
| CN201739592U (en) * | 2010-06-07 | 2011-02-09 | 开维喜阀门集团有限公司 | Multifunctional reducing valve |
| CN102062242A (en) * | 2010-12-23 | 2011-05-18 | 大丰市丰泰机电有限公司 | Gas pressure regulator |
| CN103324184A (en) * | 2013-06-29 | 2013-09-25 | 上海飞奥燃气设备有限公司 | Fuel gas transportation and distribution monitoring system |
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| JP2006285661A (en) * | 2005-03-31 | 2006-10-19 | Osaka Gas Co Ltd | Pressure governing device |
| CN203880171U (en) * | 2014-03-25 | 2014-10-15 | 上海飞奥燃气设备有限公司 | Fuel gas pressure regulating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2934675Y (en) * | 2006-03-24 | 2007-08-15 | 广州三业科技有限公司 | Constant hoisting height/ check water pump dedicated valve |
| CN201548855U (en) * | 2009-12-08 | 2010-08-11 | 上海航天能源有限公司 | Pressure regulation control system |
| CN201739592U (en) * | 2010-06-07 | 2011-02-09 | 开维喜阀门集团有限公司 | Multifunctional reducing valve |
| CN102062242A (en) * | 2010-12-23 | 2011-05-18 | 大丰市丰泰机电有限公司 | Gas pressure regulator |
| CN103324184A (en) * | 2013-06-29 | 2013-09-25 | 上海飞奥燃气设备有限公司 | Fuel gas transportation and distribution monitoring system |
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| CN103912704A (en) | 2014-07-09 |
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