CN206440360U - A kind of Natural gas standard turbine flowmeter overspeed protection system - Google Patents
A kind of Natural gas standard turbine flowmeter overspeed protection system Download PDFInfo
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- CN206440360U CN206440360U CN201720096852.4U CN201720096852U CN206440360U CN 206440360 U CN206440360 U CN 206440360U CN 201720096852 U CN201720096852 U CN 201720096852U CN 206440360 U CN206440360 U CN 206440360U
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- valve
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- flowmeter
- ball valve
- control system
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- 239000003345 natural gas Substances 0.000 title claims abstract description 16
- 239000007789 gas Substances 0.000 claims abstract description 34
- 238000001914 filtration Methods 0.000 claims description 11
- 239000012535 impurity Substances 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 230000036632 reaction speed Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 240000005373 Panax quinquefolius Species 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000001681 protective Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Abstract
The utility model provides a kind of Natural gas standard turbine flowmeter overspeed protection system; including the first ball valve being sequentially connected, self-driving type safety cut-off valve, standard turbine meter, tested flowmeter, the second ball valve; and electrically connected with standard turbine meter signal acquisition and converting unit, the calibrating control system with the electrical connection of signal acquisition and converting unit, the output end of calibrating control system is connected with the control end of self-driving type safety cut-off valve；Signal acquisition and converting unit are used under the control of calibrating control system, the gas flow signals that collection and transfer standard turbine flowmeter are detected, and transmit to calibrating control system；Calibrating control system controls the disconnection of self-driving type safety cut-off valve according to the gas flow signals.The system uses chain logic control by setting up self-driving type safety cut-off valve, and to turbine overspeed protection, can realize the overspeed protection to standard turbine meter, and automaticity is high, and reaction speed is fast.
Description
Technical field
The utility model is related to Measurement System of Natural Gas field, is specifically related to a kind of Natural gas standard turbine flowmeter and surpasses
Fast protection system.
Background technology
The metering method of current China's natural gas is mainly volume metering, wherein, gauge table station owner will enter to volume instrument
Row calibrating.Turbine flowmeter being selected for being detected the standard set-up of meter proof more.Turbine flowmeter has that stability is good, standard
The features such as exactness is high, range ratio is fast, repdocutbility is good, but because it uses the mechanical structure with movable member, surpass when there is flow velocity
When crossing the range upper limit of turbine flowmeter, influence can be produced on the metering performance of turbine flowmeter, turbine flow can be damaged when serious
Gauge, causes the damage of measurement criteria standard.In actual mechanical process, due to the upstream ball valve for balance turbine flowmeter
The accident that the reason such as front and rear pressure differential or maloperation causes turbine flowmeter hypervelocity to be damaged often has generation, and control room personnel are remote
Site technique flow, it is impossible to find that turbine flowmeter exceeds the speed limit in time by vibrations, noise, and directly settling mode passes through closing
Technological process flow control valve reduces flow to realize the overspeed protection of turbine flowmeter.
The content of the invention
In order to overcome the deficiencies in the prior art, the utility model provides that a kind of automaticity is high and reaction speed is fast
Natural gas standard turbine flowmeter overspeed protection system.
A kind of Natural gas standard turbine flowmeter overspeed protection system of the present utility model, including the first ball valve and successively
The standard turbine meter of connection, tested flowmeter, the second ball valve；Also include what one end was connected with the outlet side of the first ball valve
Self-driving type safety cut-off valve, the signal acquisition and converting unit that are electrically connected with standard turbine meter and signal acquisition and conversion
The calibrating control system of the electrical connection of unit；And the input of the other end of self-driving type safety cut-off valve and mark turbine flowmeter
Connection, the output end of calibrating control system is connected with the control end of self-driving type safety cut-off valve；Wherein, standard turbine meter,
Tested flowmeter, which is respectively used to detect, flows through standard turbine meter, the gas flow of tested flowmeter；Signal acquisition and conversion
Unit is used under the control of calibrating control system, the gas flow signals that collection and transfer standard turbine flowmeter are detected,
And transmit to calibrating control system；Calibrating control system controls the disconnected of self-driving type safety cut-off valve according to the gas flow signals
Open.
It is preferred that, in addition to flow control valve, flow bypass valve；The inlet end of flow control valve is defeated with tested flowmeter
Go out end connection, the outlet side of flow control valve is connected with the inlet end of the second ball valve；The inlet end of flow bypass valve and standard whirlpool
The input connection of flowmeters, the outlet side of flow bypass valve is connected with the inlet end of the second ball valve；Flow control valve, flow
The control end of by-passing valve is electrically connected with the output end of calibrating control system.
It is preferred that, in addition to alarm unit, the input of alarm unit is electrically connected with the output end of calibrating control system.
It is preferred that, in addition to the 3rd ball valve, the inlet end of the 3rd ball valve is connected with the inlet end of the first ball valve, the 3rd ball valve
Outlet side be connected with the outlet side of the second ball valve, the control end of the 3rd ball valve is electrically connected with the output end of calibrating control system.
It is preferred that, in addition to for filtering out one end and first for being separated by filtration unit, being separated by filtration unit of gaseous impurity
The outlet side connection of ball valve, is separated by filtration the other end of unit and is connected with described one end of self-driving type safety cut-off valve.
It is preferred that, in addition to carry out the pressure regulation steady flow unit of pressure regulation and current stabilization to gas, one end of pressure regulation steady flow unit with
The other end connection of self-driving type safety cut-off valve, the other end of pressure regulation steady flow unit is defeated with standard turbine meter respectively
Enter end, the inlet end connection of flow bypass valve.
The beneficial effects of the utility model are：A kind of Natural gas standard turbine flowmeter overspeed protection system of the present utility model
System, by setting up self-driving type safety cut-off valve, the gas flow letter that collection standard turbine meter is detected in technological process
Number, and the chain logic control of turbine overspeed protection is set in calibrating control system, calibrating control system is to gas flow signals
Analyzed, it is quick to disconnect self-driving type safety cut-off valve when gas flow exceedes maximum upper limit, cut off source of the gas；Examine and determine simultaneously
Control system produces high alarm, high alarm signal according to safe class, and carries out relevant control operation to related valve, so that
The overspeed protection to standard turbine meter is realized, and whole process automaticity is high, reaction speed is fast, and then avoids peace
The generation of full accident.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
The structure of Natural gas standard turbine flowmeter overspeed protection system of the present utility model a kind of as shown in figure 1, including
First ball valve 1 and the standard turbine meter 5 being sequentially connected, tested flowmeter 6, the second ball valve 8；
Also include self-driving type safety cut-off valve 3 and standard turbine meter that one end is connected with the outlet side of the first ball valve 1
The signal acquisition and converting unit 9 of 5 electrical connections, the calibrating control system 10 with the electrical connection of signal acquisition and converting unit 9；And
The other end of self-driving type safety cut-off valve 3 is connected with marking the input of turbine flowmeter 5, the output end of calibrating control system 10
It is connected with the control end of self-driving type safety cut-off valve 3；
Wherein, standard turbine meter 5, tested flowmeter 6 be respectively used to detection flow through standard turbine meter 5, it is tested
The gas flow of flowmeter 6；Signal acquisition and converting unit 9 are used under the control of calibrating control system 10, collection and conversion
The gas flow signals that standard turbine meter 5 is detected, and transmit to calibrating control system 10；The basis of calibrating control system 10
The disconnection of the gas flow signals control self-driving type safety cut-off valve 3.Signal acquisition and converting unit 9 can use MTL5532
Chip is realized.
Further, the protection system also includes flow control valve 7, flow bypass valve 11.Flow control valve 7 enters
Gas end is connected with the output end of tested flowmeter 6, and the outlet side of flow control valve 7 is connected with the inlet end of the second ball valve 8.Stream
The inlet end of amount by-passing valve 11 is connected with the input of standard turbine meter 5, the outlet side of flow bypass valve 11 and the second ball
The inlet end connection of valve 8.The output end electricity of flow control valve 7, the control end of flow bypass valve 11 with calibrating control system 10
Connection.
Further, the protection system also includes alarm unit 13.The input of alarm unit 13 and calibrating control system
The output end electrical connection of system 10.
Further, the protection system also includes also including the 3rd ball valve 12.The inlet end and first of 3rd ball valve 12
The inlet end connection of ball valve 1, the outlet side of the 3rd ball valve 12 is connected with the outlet side of the second ball valve 8, the control of the 3rd ball valve 12
End is electrically connected with the output end of calibrating control system 10.
Further, what the protection system also included being used for filtering out gaseous impurity is separated by filtration unit 2.It is separated by filtration list
One end of member 2 is connected with the outlet side of the first ball valve 1, is separated by filtration the other end of unit 2 and the institute of self-driving type safety cut-off valve 3
State one end connection.
Further, the protection system also includes the pressure regulation steady flow unit 4 that pressure regulation and current stabilization are carried out to gas.Pressure regulation is steady
One end of stream unit 4 is connected with the other end of self-driving type safety cut-off valve 3, the other end of pressure regulation steady flow unit 4 respectively with
The inlet end connection of the input, flow bypass valve 11 of standard turbine meter 5.
Its operation principle is as follows：
The first ball valve 1, the second ball valve 8, flow control valve 7 are opened, self-driving type safety cut-off valve 3 is connected into, the 3rd ball is closed
Valve 12, opens standard turbine meter 5.In the utility model, standard turbine meter can have multiple, corresponding, be detected stream
Gauge also has multiple, and flow control valve also has multiple, and forms a plurality of pipeline.To avoid flow occur when pipeline switches transfiniting
Situation occur, whole system 10 can monitor in real time the instantaneous delivery of every pipeline, i.e. signal acquisition and converting unit 9 calibrating
The gas flow signals that standard turbine meter 5 is detected are gathered under the control of control system 10.Calibrating control system 10 will connect
The gas flow received is compared with the gas flow set, if the gas flow received exceedes the gas flow of setting
The first percentage such as 80%, and without departing from the gas flow of setting the second percentage such as 100% when, produce high alarm
Signal is simultaneously delivered to alarm unit 13.Alarm unit 13 is alarmed using the first type of alarm.If the gas flow received surpasses
Go out the second percentage of the gas flow of setting, and without departing from the gas flow of setting the 3rd percentage such as 120% when, production
Sheng Gaogao alarm signals are simultaneously delivered to alarm unit 13.Alarm unit 13 is alarmed using the second type of alarm.Meanwhile, calibrating control
The control flow control valve 7 of system 10 is closed, and flow bypass valve 11 is opened, while flow value is periodically detected, until what is received
Second percentage of the gas flow not less than the gas flow of setting.Now, control flow control valve 7 is opened, flow bypass valve
11 close, after non-maloperation to be confirmed, continue adjusting gas flow, prevent maloperation from causing damage to standard turbine meter 5.
When three percentage of the gas flow received beyond the gas flow of setting, the control self-driving type peace of calibrating control system 10
Full stop valve 3 disconnects immediately, with protective standard turbine flowmeter 5；The 3rd ball valve 12 is controlled to open simultaneously, to ensure other masters
Ventilate on main line.
The part not illustrated in specification is prior art or common knowledge.It is new that the present embodiment is merely to illustrate the practicality
Type, rather than limit scope of the present utility model, equivalent replacement that those skilled in the art are done for the utility model etc.
Modification is deemed to fall within the utility model right claim institute protection domain.
Claims (6)
1. a kind of Natural gas standard turbine flowmeter overspeed protection system, including the first ball valve (1) and the standard being sequentially connected
Turbine flowmeter (5), tested flowmeter (6), the second ball valve (8)；It is characterized in that：
Also include self-driving type safety cut-off valve (3) and standard turbine meter that one end is connected with the outlet side of the first ball valve (1)
(5) signal acquisition and converting unit (9) of electrical connection, the calibrating electrically connected with signal acquisition and converting unit (9) control system
Unite (10)；And the other end of self-driving type safety cut-off valve (3) is connected with the input of mark turbine flowmeter (5), calibrating control
The output end of system (10) is connected with the control end of self-driving type safety cut-off valve (3)；
Wherein, standard turbine meter (5), tested flowmeter (6) are respectively used to detection and flow through standard turbine meter (5), quilt
Examine the gas flow of flowmeter (6)；Signal acquisition and converting unit (9) are used under the control of calibrating control system (10), adopt
The gas flow signals that collection and transfer standard turbine flowmeter (5) are detected, and transmit to calibrating control system (10)；Calibrating control
System (10) processed controls the disconnection of self-driving type safety cut-off valve (3) according to the gas flow signals.
2. a kind of Natural gas standard turbine flowmeter overspeed protection system according to claim 1, it is characterised in that：Also wrap
Include flow control valve (7), flow bypass valve (11)；The inlet end of flow control valve (7) connects with the output end of tested flowmeter (6)
Connect, the outlet side of flow control valve (7) is connected with the inlet end of the second ball valve (8)；The inlet end and mark of flow bypass valve (11)
The input connection of quasi- turbine flowmeter (5), the outlet side of flow bypass valve (11) is connected with the inlet end of the second ball valve (8)；
The output end of flow control valve (7), the control end of flow bypass valve (11) with calibrating control system (10) is electrically connected.
3. a kind of Natural gas standard turbine flowmeter overspeed protection system according to claim 2, it is characterised in that：Also wrap
Alarm unit (13) is included, the input of alarm unit (13) is electrically connected with the output end of calibrating control system (10).
4. a kind of Natural gas standard turbine flowmeter overspeed protection system according to claim 1, it is characterised in that：Also wrap
The 3rd ball valve (12) is included, the inlet end of the 3rd ball valve (12) is connected with the inlet end of the first ball valve (1), the 3rd ball valve (12) go out
Gas end is connected with the outlet side of the second ball valve (8), the control end of the 3rd ball valve (12) and the output end of calibrating control system (10)
Electrical connection.
5. a kind of Natural gas standard turbine flowmeter overspeed protection system according to any one of claim 1 to 4, it is special
Levy and be：Also include being used for the one end and the first ball that are separated by filtration unit (2), are separated by filtration unit (2) that filter out gaseous impurity
The outlet side connection of valve (1), the other end for being separated by filtration unit (2) is connected with described one end of self-driving type safety cut-off valve (3).
6. a kind of Natural gas standard turbine flowmeter overspeed protection system according to any one of claim 2 to 4, it is special
Levy and be：Also include the pressure regulation steady flow unit (4) that pressure regulation and current stabilization are carried out to gas, one end of pressure regulation steady flow unit (4) with from
The other end connection of drive formula safety cut-off valve (3), the other end of pressure regulation steady flow unit (4) respectively with standard turbine meter
(5) the inlet end connection of input, flow bypass valve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720096852.4U CN206440360U (en) | 2017-01-24 | 2017-01-24 | A kind of Natural gas standard turbine flowmeter overspeed protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720096852.4U CN206440360U (en) | 2017-01-24 | 2017-01-24 | A kind of Natural gas standard turbine flowmeter overspeed protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206440360U true CN206440360U (en) | 2017-08-25 |
Family
ID=59636655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720096852.4U Active CN206440360U (en) | 2017-01-24 | 2017-01-24 | A kind of Natural gas standard turbine flowmeter overspeed protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206440360U (en) |
-
2017
- 2017-01-24 CN CN201720096852.4U patent/CN206440360U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200814 Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee after: China Petroleum & Chemical Corp. Address before: 430070 No. 126 Optics Valley Avenue, East Lake New Technology Development Zone, Wuhan, Hubei Patentee before: METERING RESEARCH CENTER, NATURAL GAS BRANCH OF CHINA PETROLEUM AND CHEMICAL Corp. |