CN207851267U - A kind of density monitor on-line testing device - Google Patents
A kind of density monitor on-line testing device Download PDFInfo
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- CN207851267U CN207851267U CN201820341515.1U CN201820341515U CN207851267U CN 207851267 U CN207851267 U CN 207851267U CN 201820341515 U CN201820341515 U CN 201820341515U CN 207851267 U CN207851267 U CN 207851267U
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- density monitor
- closed container
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Abstract
The utility model is related to a kind of density monitor on-line testing devices, technical solution is, including gas chamber ontology and density monitor, triplate line is housed on gas chamber ontology, first interface of triplate line is connected with the inner cavity of gas chamber ontology and manually-operated gate is housed on this section of pipeline, second interface of triplate line is connected with density monitor, the sealed pipeline of third interface of triplate line is connected with the inner cavity of closed container, the exhaust pipe being connected with its inner cavity is provided on closed container, solenoid valve is provided on exhaust pipe, the pressure sensor for detecting closed container internal pressure value is provided in closed container, the utility model has pressure on the number display function, checking procedure is not necessarily to air source, it is verified using switchgear ontology air source, it carries portable, wiring is simple, precision is met the requirements.
Description
Technical field
The present invention relates to density monitor, especially a kind of density monitor on-line testing device.
Background technology
Major part power equipment is all made of SF6 gases (sulfur hexafluoride) as dielectric at present, and gas chamber is mounted on prison
Survey the density monitor of air chamber pressure.There is the meter temperature compensation means, display pressure not to change with ambient temperature and change,
And there is the low warning function of pressure.Inside equipment SF6 gases with the presence or absence of leakage mainly by SF6 gas density is relay into
Row monitoring.Density monitor is frequently present of indicator bite, water inlet, controls back since majority is mounted in the adverse circumstances such as outdoor
The problems such as road contact oxidation, so regulatory requirements will be to density monitor progress precision checking and alarm circuit per 1-3
Verification.
There are two types of the methods of calibration used at present, and one is density monitor is disassembled progress from switchgear ontology
It verifies, again installs relay recovery to operating status after assay approval.Due to needing relay from setting in checking procedure
It is disassembled on standby ontology, carries out back dress after verification again, do not controlled strictly if returning dress process, it is not tight that there are joint sealings
The risk of gas leakage, to influence equipment safety operation.National Energy Board's publication《Prevent 25 weights of power generation accident
Point requires》The middle connection type required between SF6 gas density is relay and switchgear ontology should meet do not dismantle verification it is close
Spend the requirement of relay.The relay for the condition that is unsatisfactory for is carried out upgrading by major part electricity power enterprise at present, by density relay
Install triple valve among device and switchgear coupling part additional, have manually-operated gate on the triple valve of installation, can be turned off manually density after
Electric appliance connect to prevent gas leakage with switchgear gas circuit.Another is verified for after installation triple valve, by density monitor
Manually-operated gate between gas chamber ontology is closed, and tester is connected with triple valve verification interface, the gas cylinder carried by instrument
It is inflated verification to density monitor.Triple valve (verification interface) is disconnected with tester after verification and restores to seal,
The manually-operated gate of density monitor and gas chamber ontology is opened simultaneously, is restored to operating status.This checking procedure needs to carry gas cylinder.
Existing method has the following problems and defect：
1, laboratory's verification needs to dismantle density monitor, and there are gas leakage risks；
2, on-line testing needs standard air source, gas cylinder to belong to pressure vessel, can not take public transport, and is not easy to transport
It is defeated.
Therefore, the improvement and innovation that density monitor verifies are imperative.
Invention content
For the above situation, to overcome the defect of the prior art, the purpose of the present invention to be just to provide a kind of density monitor
On-line testing device and on-line testing method can effectively solve the problems, such as that density monitor is monitored on-line.
The technical solution that the present invention solves is a kind of density monitor on-line testing device, including gas chamber ontology and density
Relay is equipped with triplate line on gas chamber ontology, and first interface of triplate line is connected with the inner cavity of gas chamber ontology and this
Manually-operated gate is housed, second interface of triplate line is connected with density monitor, and the third of triplate line connects on Duan Guanlu
The sealed pipeline of mouth is connected with the inner cavity of closed container, and the exhaust pipe being connected with its inner cavity is provided on closed container, arranges
It is provided with solenoid valve on tracheae, the pressure sensor for detecting closed container internal pressure value is provided in closed container, it is close
The signal output end of the signal output end and pressure sensor of spending relay is connected with the signal input part of collector, collector
Signal output end be connected with the input terminal of controller, the output end of controller respectively with the input terminal of solenoid valve and display
Input terminal is connected.
Coupled operation panel is housed on the controller, button is provided on operation panel.
Coupled reservoir is housed on the controller.
On-line testing apparatus structure novel and unique of the present invention, advantages of simple is easy to produce, easy to operate, and it is aobvious to have pressure on the number
Show that function, checking procedure are not necessarily to air source, are verified using switchgear ontology air source, carrying is portable, and wiring is simple, and precision is full
Foot requires, and on-line testing method of the present invention is simple, effective solution air source transportation problem, while meeting scene and not dismantling verification
The requirement that density monitor is verified, while density monitor can be verified using the SF6 gases of apparatus body, it keeps away
The problem of having exempted from pressure vessel inconvenience long-distance transport.It greatly improves work efficiency, easy to use, effect is good, is density relay
Innovation on device calibration equipment and method.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is that circuit of the present invention connects frame schematic diagram.
Specific implementation mode
The specific implementation mode of the present invention is described in further detail below in conjunction with attached drawing.
It is provided by Fig. 1-2, a kind of density monitor on-line testing device of the present invention, including gas chamber ontology 1 and density relay
Device 4 is equipped with triplate line 3 on gas chamber ontology 1, and first interface of triplate line 3 is connected with the inner cavity of gas chamber ontology 1 and this
Manually-operated gate 2 is housed, second interface of triplate line 3 is connected with density monitor 4, the third of triplate line 3 on Duan Guanlu
A sealed pipeline 5 of interface is connected with the inner cavity of closed container 6, and the row being connected with its inner cavity is provided on closed container 6
Tracheae 8 is provided with solenoid valve 9 on exhaust pipe, the pressure for detecting closed container internal pressure value is provided in closed container 6
Sensor 14, the signal of the signal output end of density monitor 4 and the signal output end of pressure sensor 14 with collector 11
Input terminal is connected, and the signal output end of collector 11 is connected with the input terminal of controller 12, the output end of controller 12 respectively with
The input terminal of solenoid valve 9 is connected with the input terminal of display 10.
To ensure using effect, the air inlet 7 being tightly connected with sealing pipeline 5 is provided on the closed container 6；Institute
First sealed adapter sleeve 13a, the air inlet 7 of closed container 6 are housed on the interface that the triplate line 3 stated is connected with sealing pipeline 5
It is upper that second sealed adapter sleeve 13b is housed, constitute the reassembling type Hermetical connecting structure of sealing pipeline.
Collector 11, controller 12 and the display 10 is each attached on the outer wall of closed container 6, can be outside it
The protective cover of folding is set, and protective cover can be hinged with the outer wall of closed container, and when use opens, and can also be arranged transparent
Protective cover is observable display without opening.
6 both sides of closed container are provided with handle 15.Facilitate hand-held.
The signal output end of the density monitor 4 and the signal output end of pressure sensor 14 by signal wire with adopt
The signal input part of storage 11 is connected.
Coupled operation panel 16 is housed on the controller 12, button is provided on operation panel；For manual
Operation；
Coupled reservoir is housed on the controller 12；For preserving detection information.
The controller is commercial product such as Japan PO07 pressure acquisitions control chip, for another example model STC89C51
Singlechip controller, PLC controller etc., the collector is commercial product, such as the model of Qing Yu meter electronics factory production
For the collector of SQY11, for another example W77E series monolithics controller etc., collector can acquire the report of density sensor acquisition
Alert pressure signal and locking pressure signal and the pressure signal of pressure sensor acquisition, while these pressure signals being transferred to
Display and reservoir, and show and preserved in reservoir over the display, memory is commercial product, and model such as can be used
For the storage chip of 24C64.
9, a kind of density monitor on-line testing method, includes the following steps：
A, online calibration equipment is installed
The on-line testing device includes gas chamber ontology 1 and density monitor 4, and triplate line is housed on gas chamber ontology 1
3, first interface of triplate line 3 is connected with the inner cavity of gas chamber ontology 1 and manually-operated gate 2, threeway is housed on this section of pipeline
Second interface of pipeline 3 is connected with density monitor 4, manually-operated gate 2 is closed, by the third interface of triplate line 3 through close
Tube sealing road 5 is connected with the inner cavity of closed container 6, and the exhaust pipe 8 being connected with its inner cavity is provided on closed container 6, exhaust
It is provided with solenoid valve 9 on pipe, the pressure sensor 14 for detecting closed container internal pressure value is provided in closed container 6,
The signal output end of pressure sensor 14 is connected with the signal input part of collector 11, the signal output end of collector 11 and control
The input terminal of device 12 is connected, and the output end of controller 12 is connected with the input terminal of the input terminal of solenoid valve 9 and display 10 respectively；
The signal output end of density monitor 4 is connect with the signal input part of collector 11 by signal wire；On the controller 12
Equipped with coupled operation panel 16, button is provided on operation panel；Coupled storage is housed on the controller 12
Storage；
B, confirm that solenoid valve is closed, open manually-operated gate 2, keep density monitor, closed container inner cavity gentle
Room chamber body is mutually communicated, and pressure is consistent；
C, manually-operated gate 2 is closed, controlling solenoid valve by controller slowly opens, and makes closed container chamber pressure with per second
The speed of 0.01MPa reduces, and display 10 can real-time display pressure value；
D, when pressure is down to density monitor alarm pressure, the alarm actuating contact of density monitor is closed, and sends out alarm signal
Number, and collector is transmitted to by signal wire, the pressure value of the density monitor output under the alarm signal is recorded, as alarm
Reference pressure value, while controller records pressure sensor collected pressure value when density monitor sends out alarm signal,
As alarm actual pressure value；When pressure continues to drop to locking value, density monitor sends out block signal, and passes through signal wire
It is transmitted to collector, records the pressure value of the density monitor output under the block signal, as locking reference pressure value, simultaneously
Controller records pressure sensor collected pressure value when density monitor sends out locking signal, as locking actual pressure
Value；
E, test terminates, and controller will alarm reference pressure value, alarm actual pressure value, locking reference pressure value and locking
Actual pressure value is exported and is shown over the display, while being exported to reservoir and being stored；
Alarm reference pressure value and alarm actual pressure value are compared, by locking reference pressure value and the practical pressure of locking
Force value is compared, and brings formula a, b into and calculates alarm error amount and locking error amount, when two error amounts are in ± 1.0% range
When interior, density monitor meets requirement；
The range of the density monitor can be read by instrument itself or be obtained from shop instructions；
F, solenoid valve is closed, sealing pipeline 5 and signal wire are removed, restores density monitor to operating status.
The method of the present invention through multiple actual test, achieve it is same or similar as test structure, multiple test result
Repeatability is higher, and compared with prior art, on-line testing apparatus structure novel and unique of the present invention, advantages of simple is easy to produce, easily grasps
Make, have pressure on the number display function, checking procedure is not necessarily to air source, is verified using switchgear ontology air source, is carried just
It takes, wiring is simple, and precision is met the requirements, on-line testing method of the present invention is simple, effective solution air source transportation problem, simultaneously
Meet scene and do not dismantle the requirement that verification density monitor is verified, while the SF6 gases of apparatus body can be utilized to close
Degree relay is verified, and the problem of pressure vessel inconvenience is transported for long-distance is avoided.It greatly improves work efficiency, user
Just, effect is good, is the innovation in density monitor calibration equipment and method.
Claims (8)
1. a kind of density monitor on-line testing device, including gas chamber ontology (1) and density monitor (4), which is characterized in that gas
On room ontology (1) be equipped with triplate line (3), first interface of triplate line (3) be connected with the inner cavity of gas chamber ontology (1) and
Manually-operated gate (2) is housed, second interface of triplate line (3) is connected with density monitor (4), triplate line on this section of pipeline
(3) the sealed pipeline of third interface (5) is connected with the inner cavity of closed container (6), be provided on closed container (6) and its
The exhaust pipe (8) that inner cavity is connected is provided with solenoid valve (9) on exhaust pipe, is provided in closed container (6) closed for detecting
The pressure sensor (14) of container internal pressure value, the letter of the signal output end and pressure sensor (14) of density monitor (4)
Number output end is connected with the signal input part of collector (11), and the signal output end of collector (11) is defeated with controller (12)
Enter end to be connected, the output end of controller (12) is connected with the input terminal of the input terminal of solenoid valve (9) and display (10) respectively.
2. density monitor on-line testing device according to claim 1, which is characterized in that the closed container (6)
On be provided with sealing pipeline (5) be tightly connected air inlet (7).
3. density monitor on-line testing device according to claim 2, which is characterized in that the triplate line (3)
First sealed adapter sleeve (13a) is housed on the interface being connected with sealing pipeline (5), is equipped on the air inlet (7) of closed container (6)
Second sealed adapter sleeve (13b) constitutes the reassembling type Hermetical connecting structure of sealing pipeline.
4. density monitor on-line testing device according to claim 1, which is characterized in that the collector (11),
Controller (12) and display (10) are each attached on the outer wall of closed container (6).
5. density monitor on-line testing device according to claim 1, which is characterized in that the closed container (6)
Both sides are provided with handle (15).
6. density monitor on-line testing device according to claim 1, which is characterized in that the density monitor (4)
Signal output end and the signal output end of pressure sensor (14) pass through the signal input part of signal wire and collector (11)
It is connected.
7. density monitor on-line testing device according to claim 1, which is characterized in that filled on the controller (12)
There is coupled operation panel (16), button is provided on operation panel.
8. density monitor on-line testing device according to claim 1, which is characterized in that filled on the controller (12)
There is coupled reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820341515.1U CN207851267U (en) | 2018-03-13 | 2018-03-13 | A kind of density monitor on-line testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820341515.1U CN207851267U (en) | 2018-03-13 | 2018-03-13 | A kind of density monitor on-line testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207851267U true CN207851267U (en) | 2018-09-11 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820341515.1U Expired - Fee Related CN207851267U (en) | 2018-03-13 | 2018-03-13 | A kind of density monitor on-line testing device |
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| CN (1) | CN207851267U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108427088A (en) * | 2018-03-13 | 2018-08-21 | 中国大唐集团科学技术研究院有限公司华中分公司 | A kind of density monitor on-line testing device and on-line testing method |
| CN110426312A (en) * | 2019-09-04 | 2019-11-08 | 上海乐研电气有限公司 | On-line sampling check-up gas density electrical relay with defencive function |
-
2018
- 2018-03-13 CN CN201820341515.1U patent/CN207851267U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108427088A (en) * | 2018-03-13 | 2018-08-21 | 中国大唐集团科学技术研究院有限公司华中分公司 | A kind of density monitor on-line testing device and on-line testing method |
| CN108427088B (en) * | 2018-03-13 | 2024-05-03 | 中国大唐集团科学技术研究院有限公司华中分公司 | Online verification device and online verification method for density relay |
| CN110426312A (en) * | 2019-09-04 | 2019-11-08 | 上海乐研电气有限公司 | On-line sampling check-up gas density electrical relay with defencive function |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180911 |
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| CF01 | Termination of patent right due to non-payment of annual fee |