CN109031115A - A kind of the tamper calibration equipment and SF6 electrical equipment of density monitor - Google Patents
A kind of the tamper calibration equipment and SF6 electrical equipment of density monitor Download PDFInfo
- Publication number
- CN109031115A CN109031115A CN201811267851.7A CN201811267851A CN109031115A CN 109031115 A CN109031115 A CN 109031115A CN 201811267851 A CN201811267851 A CN 201811267851A CN 109031115 A CN109031115 A CN 109031115A
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- CN
- China
- Prior art keywords
- density monitor
- flow control
- pipe valve
- control pipe
- tamper
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
The invention discloses a kind of tamper calibration equipment of density monitor and SF6 electrical equipments, comprising: goes up the gas circuit communicating pipe between density monitor and SF6 switchgear ontology, the flow control pipe valve for controlling the gas flow between density monitor and SF6 switchgear ontology；It is connect with density monitor, the calibration equipment for carrying out verification up to standard to density monitor in the case where flow control pipe valve is closed.It can be seen that, when SF6 electrical equipment is in maintenance outage, to be verified to density monitor, flow control pipe valve can then be closed, SF6 gas in SF6 switchgear is isolated with density monitor, so the application can verify density monitor in the case where not dismantling density monitor, so that the loss of SF6 gas will not be caused, and frequent disassembly is avoided, it ensure that the safe and stable operation of equipment and power grid；In addition, having saved the checking time of density monitor, improve work efficiency.
Description
Technical field
The present invention relates to SF6 electrical equipments, more particularly to the tamper calibration equipment and SF6 of a kind of density monitor
Electrical equipment.
Background technique
Currently, density monitor is indispensable important component in SF6 electrical equipment, protection SF6 is electrically set
The safe operation of standby and entire power grid plays an important role.In the prior art, the density monitor and Qi Bao in SF6 electrical equipment
The SF6 switchgear ontology contained is directly connected to, and circulation has SF6 gas therebetween.SF6 gas leaks in order to prevent, usually exists
Install gasket on density monitor additional.Since circulation has SF6 gas, density between density monitor and SF6 switchgear ontology
Gas pressure in relay is limited to the concentration of SF6 gas, so must could be right in the case where dismantling density monitor
Density monitor is verified, and the verifying work of density monitor is otherwise unable to complete.But the meeting when dismantling density monitor
Part SF6 gas is lost, and long-term disassembly will lead to the leakproofness decline of gasket, be whole so that gas be easy to cause to leak
The safe operation of a power grid brings hidden danger；In addition, disassembly density monitor spent by the time it is longer, cause regular inspection workload compared with
Greatly, working efficiency is lower, to be difficult to complete the verifying work of all density monitors in scheduled overhaul outage.
Therefore, how to provide a kind of scheme of solution above-mentioned technical problem is that those skilled in the art needs to solve at present
The problem of.
Summary of the invention
The object of the present invention is to provide a kind of tamper calibration equipment of density monitor and SF6 electrical equipments, can not tear open
Density monitor is verified in the case where unloading density monitor, so that the loss of SF6 gas will not be caused, and avoids frequency
Numerous disassembly ensure that the safe and stable operation of equipment and power grid；In addition, having saved the checking time of density monitor, improve
Working efficiency.
In order to solve the above technical problems, the present invention provides a kind of tamper calibration equipments of density monitor, comprising:
On gas circuit communicating pipe between density monitor in SF6 electrical equipment and SF6 switchgear ontology, it is used for
Control the flow control pipe valve of the gas flow between the density monitor and the SF6 switchgear ontology；
It connect, be used in the case where the flow control pipe valve is closed to the density relay with the density monitor
Device carries out the calibration equipment of verification up to standard.
Preferably, the flow control pipe valve is specially hand flow control pipe valve.
Preferably, the flow control pipe valve is specially controllable type flow control pipe valve；Then the tamper calibration equipment also wraps
Include the control device connecting respectively with the controllable type flow control pipe valve and the calibration equipment；
The calibration equipment is also used to after receiving checking command, controls the flow control by the control device
Pipe valve is closed.
Preferably, the calibration equipment includes:
For being passed through the pneumatic supply of gas into the density monitor；
For detecting and showing the gas pressure in the density monitor, to verify personnel according to the gas pressure
Determine density monitor pressure-detecting device whether up to standard.
Preferably, the tamper calibration equipment further include:
Set on the flow control pipe valve with the interface of the gas circuit communicating pipe, for being sealed to the interface
Sealing.
Preferably, the sealing is specially sealant.
Preferably, the flow control pipe valve is specially the flow control pipe valve of stainless steel material.
In order to solve the above technical problems, the present invention also provides a kind of SF6 electrical equipment, including density monitor and SF6
Switchgear ontology further includes the tamper calibration equipment of any of the above-described kind of density monitor.
Preferably, the exposed setting of the density monitor.
Preferably, which further includes the rain cover for preventing the density monitor water inlet.
The present invention provides a kind of tamper calibration equipments of density monitor, comprising: the density in SF6 electrical equipment
On gas circuit communicating pipe between relay and SF6 switchgear ontology, for controlling density monitor and SF6 switchgear ontology
Between gas flow flow control pipe valve；It is connect with density monitor, in the case where flow control pipe valve is closed
The calibration equipment of verification up to standard is carried out to density monitor.
As it can be seen that the application installs flow control pipe valve additional between density monitor and SF6 switchgear ontology, in SF6 electricity
When gas equipment works normally, flow control pipe valve is in the open state, and circulate therebetween SF6 gas；At SF6 electrical equipment
When overhauling outage, to verify to density monitor, then flow control pipe valve can be closed, make SF6 switchgear
Middle SF6 gas is isolated with density monitor, so the application can be in the case where not dismantling density monitor to density relay
Device is verified, so that the loss of SF6 gas will not be caused, and is avoided frequent disassembly, be ensure that the safety of equipment and power grid
Stable operation；In addition, having saved the checking time of density monitor, improve work efficiency.
The present invention also provides a kind of SF6 electrical equipments, with above-mentioned tamper calibration equipment beneficial effect having the same.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to institute in the prior art and embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of the tamper calibration equipment of density monitor provided by the invention；
Fig. 2 is the structural schematic diagram of the tamper calibration equipment of another density monitor provided by the invention.
Specific embodiment
Core of the invention is to provide the tamper calibration equipment and SF6 electrical equipment of a kind of density monitor, can not tear open
Density monitor is verified in the case where unloading density monitor, so that the loss of SF6 gas will not be caused, and avoids frequency
Numerous disassembly ensure that the safe and stable operation of equipment and power grid；In addition, having saved the checking time of density monitor, improve
Working efficiency.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Fig. 1 is please referred to, Fig. 1 is a kind of structural schematic diagram of the tamper calibration equipment of density monitor provided by the invention.
The tamper calibration equipment of the density monitor includes:
On gas circuit communicating pipe between density monitor in SF6 electrical equipment and SF6 switchgear ontology, it is used for
Control the flow control pipe valve 1 of the gas flow between density monitor and SF6 switchgear ontology；
It is connect with density monitor, is up to standard for being carried out in the case where flow control pipe valve 1 is closed to density monitor
The calibration equipment 2 of verification.
Specifically, it is found through on-site investigation, when substation equipment has a power failure, to the density relay in SF6 electrical equipment
Device is verified, and needs to dismantle density monitor, and frequently dismantles density monitor and gas is be easy to cause to leak.Institute
It include flow control pipe valve 1 and calibration equipment 2 with, the tamper calibration equipment of the density monitor of the application, its working principle is that:
When SF6 electrical equipment works normally, the density monitor and SF6 switchgear in SF6 electrical equipment should be kept
SF6 gas circulation between ontology, that is to say, that flow control pipe valve 1 should be at open state, i.e. flow control pipe valve at this time
1 effect without hindrance for SF6 gas.When SF6 electrical equipment is in maintenance outage, to be reached to density monitor
Calibration is tested (such as the verification of locking value, fault value verification), then needs for SF6 gas in SF6 switchgear to be isolated with density monitor,
That is, flow control pipe valve 1 should be at closed state at this time, to keep apart SF6 gas and density monitor, make density
Gas pressure in relay is not only restricted to the concentration of SF6 gas, thus can be using calibration equipment 2 directly to density relay
Device is verified.As it can be seen that under conditions of installing flow control pipe valve 1 additional between density monitor and SF6 switchgear ontology, only
The unlatching situation of flow control pipe valve 1 is controlled, it can be without dismantling density monitor, calibration equipment 2 also can be to density relay
Device is verified, and SF6 gas will not influence the check results of density monitor at this time, and completely avoids frequently dismantling to close
It is lost caused by packing and equipment cover.
Further, the application does not dismantle to disassembly density monitor and two kinds of situations of density monitor and does following comparison:
Table 1
Table 2
By Tables 1 and 2 it is found that all dismantling density monitor if the scheduled outage time is 6 hours and being verified,
It can be only done 6, and need the cooperation of two substation equipment maintenance and repair staff；And all not dismantling density monitor carries out school
It tests, 12 can be completed, it is only necessary to which the cooperation of a substation equipment maintenance and repair staff (target value: in regular program checking time, verifies
50%) working efficiency of density monitor improves.As it can be seen that dismantling density monitor to verify whole density monitors
Method of calibration will affect time and the personnel of entire interruption maintenance plan, cause working efficiency lower.
Table 3
As shown in Table 3, spring and autumn inspection needs the density monitor verified to be distributed in local different substation, when some
Substation's scheduled outage time is one day, and when the verification number of units of density monitor is more than 6, dismantles the verification of density monitor
Method can not be timely completed verification task.And compared to the method for calibration of disassembly density monitor, it is provided by the present application not dismantle
The method of calibration of density monitor has saved the checking time of density monitor, improves work efficiency, thus to stop in plan
Set verification task is completed in the electric time, and effective guarantee is provided.
In addition, the application is before verifying density monitor, it should be ensured that several points: the 1) verification of every staff
Used time (carries out operation training work in advance at the appointed time to shorten the verification used time of staff, every staff is complete
Guarantee to be no more than 30 minutes at the verification used time of 1 density monitor)；2) ensure that staff arrives to hilllock when each scheduled outage
Position (ensuring, which has electrical test teams and groups personnel and the personnel of substation equipment maintenance and repair teams and groups to cooperate, carries out density monitor verification)；3) ensure close
The sealing effect of packing is good.
The present invention provides a kind of tamper calibration equipments of density monitor, comprising: the density in SF6 electrical equipment
On gas circuit communicating pipe between relay and SF6 switchgear ontology, for controlling density monitor and SF6 switchgear ontology
Between gas flow flow control pipe valve；It is connect with density monitor, in the case where flow control pipe valve is closed
The calibration equipment of verification up to standard is carried out to density monitor.
As it can be seen that the application installs flow control pipe valve, flow control additional between density monitor and SF6 switchgear ontology
Pipe valve is in the open state, and circulate therebetween SF6 gas；When SF6 electrical equipment is in maintenance outage, to close
Degree relay is verified, then can close flow control pipe valve, SF6 gas in SF6 switchgear is isolated with density monitor,
So the application can verify density monitor in the case where not dismantling density monitor, so that SF6 will not be caused
The loss of gas, and frequent disassembly is avoided, it ensure that the safe and stable operation of equipment and power grid；In addition, saved density after
The checking time of electric appliance, improves work efficiency.
Referring to figure 2., Fig. 2 is the structural representation of the tamper calibration equipment of another density monitor provided by the invention
Figure.The tamper calibration equipment of the density monitor is on the basis of the above embodiments:
As a kind of preferred embodiment, flow control pipe valve 1 is specially hand flow control pipe valve.
Specifically, the flow control pipe valve 1 of the application can select hand flow control pipe valve, by staff according to
Specific requirements artificially control opening or closing for hand flow control pipe valve.
As a kind of preferred embodiment, flow control pipe valve 1 is specially controllable type flow control pipe valve；The then tamper school
Testing equipment further includes the control device connecting respectively with controllable type flow control pipe valve and calibration equipment 2；
Calibration equipment 2 is also used to after receiving checking command, is controlled flow control pipe valve 1 by control device and is closed.
Specifically, the flow control pipe valve 1 of the application can also select controllable type flow control pipe valve.It is electrically set in SF6
When the standby outage in maintenance, to verify to density monitor, staff then sends verification to calibration equipment 2 and refers to
It enables, calibration equipment 2 controls controllable type flow control pipe valve by control device and close after receiving checking command；Also,
After density monitor verifies, calibration equipment 2 is opened further through control device control controllable type flow control pipe valve, there is no harm in
Hinder the later stage work of SF6 electrical equipment.
As a kind of preferred embodiment, calibration equipment 2 includes:
For being passed through the pneumatic supply of gas into density monitor；
For detecting and showing the gas pressure in density monitor, density is determined to verify personnel according to gas pressure
Relay pressure-detecting device whether up to standard.
Specifically, it under density monitor normal work, can be closed when gas pressure reaches regulation locking value in it
Lock will do it alarm when gas pressure reaches regulation fault value in it.The application carries out verification up to standard to density monitor, real
It is exactly to check whether density monitor can work normally on border.Based on this, the calibration equipment 2 of the application includes pneumatic supply and pressure
Force checking device, its working principle is that:
The application is passed through gas into density monitor by pneumatic supply, to change the gas pressure in density monitor
Power.Specifically, the application first can carry out boost operations to density monitor by pneumatic supply, then drop to density monitor
Press operation.In the process, the pressure-detecting device real-time detection of the application and the gas pressure in density monitor is shown, from
And for the gas pressure in verification personnel's real time inspection density monitor.It is closed when the gas pressure in density monitor reaches regulation
When drop lock, verification personnel should observe whether density monitor is latched；When the gas pressure in density monitor reaches regulation
When fault value, verification personnel should observe density monitor and whether alarm that (boost operations and reduced pressure operation are both needed to observe, and allow to exist
Certain error).If the locking and alarm of density monitor meet specified value, then it is assumed that density monitor is up to standard；If density after
The locking and/or alarm of electric appliance are against regulation scope, then it is assumed that density monitor is not up to standard, need to tie up to density monitor
It repairs, to guarantee density monitor subsequent normal operation.
As a kind of preferred embodiment, the tamper calibration equipment further include:
Set on interface, the sealing for being sealed to interface of flow control pipe valve 1 and gas circuit communicating pipe.
Further, the tamper calibration equipment of the application further includes for sealing flow control pipe valve 1 and gas circuit communicating pipe
The sealing of interface and then ensure that the safe and stable operation of equipment and power grid to prevent SF6 gas from leaking.
As a kind of preferred embodiment, sealing is specially sealant.
Specifically, sealant can be selected but be not limited only to the sealing of the application, and the application does not do special limit herein
It is fixed.
As a kind of preferred embodiment, flow control pipe valve 1 is specially the flow control pipe valve of stainless steel material.
Specifically, stainless steel material can be selected in the material of the flow control pipe valve 1 of the application and other equipment, is not in
Situations such as getting rusty, and good appearance.
The present invention also provides a kind of SF6 electrical equipments, including density monitor and SF6 switchgear ontology, further include
The tamper calibration equipment of any of the above-described kind of density monitor.
As a kind of preferred embodiment, the exposed setting of density monitor.
Further, existing density monitor is in the subenvironment of mechanism case formation, and SF6 switchgear ontology is in
In external environment, lead to the temperature of density monitor and SF6 switchgear ontology local environment difference, when the two temperature difference compared with
When big, be easy to cause the pressure value of density monitor detection SF6 gas there are error, may when SF6 gas does not leak mistake
Send out alarm signal.So the application is by the exposed setting of density monitor, thus both eliminate the temperature difference it is larger caused by density relay
Device false alarm phenomenon, and then improve the reliability of density monitor.
As a kind of preferred embodiment, which further includes the rain-proof for preventing density monitor from intaking
Cover.
Further, the SF6 electrical equipment of the application also installs rain cover additional in the top of density monitor, can effectively prevent
Only density monitor is intake, to improve the safety of density monitor.
Other introductions of SF6 electrical equipment provided by the present application please refer to the embodiment of above-mentioned tamper calibration equipment, this Shen
It please details are not described herein.
It should also be noted that, in the present specification, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of tamper calibration equipment of density monitor characterized by comprising
On gas circuit communicating pipe between density monitor in SF6 electrical equipment and SF6 switchgear ontology, for controlling
The flow control pipe valve of gas flow between the density monitor and the SF6 switchgear ontology；
Connect with the density monitor, for the flow control pipe valve close in the case where to the density monitor into
The calibration equipment of row verification up to standard.
2. the tamper calibration equipment of density monitor as described in claim 1, which is characterized in that the flow control pipe valve tool
Body is hand flow control pipe valve.
3. the tamper calibration equipment of density monitor as described in claim 1, which is characterized in that the flow control pipe valve tool
Body is controllable type flow control pipe valve；Then the tamper calibration equipment further include respectively with the controllable type flow control pipe valve and institute
State the control device of calibration equipment connection；
The calibration equipment is also used to after receiving checking command, controls the flow control pipe valve by the control device
It closes.
4. the tamper calibration equipment of density monitor as described in any one of claims 1-3, which is characterized in that the verification dress
It sets and includes:
For being passed through the pneumatic supply of gas into the density monitor；
For detecting and showing the gas pressure in the density monitor, determine to verify personnel according to the gas pressure
Density monitor pressure-detecting device whether up to standard.
5. the tamper calibration equipment of density monitor as claimed in claim 4, which is characterized in that the tamper calibration equipment also wraps
It includes:
Set on the flow control pipe valve and the interface of the gas circuit communicating pipe, close for being sealed to the interface
Envelope portion.
6. the tamper calibration equipment of density monitor as claimed in claim 5, which is characterized in that the sealing is specially close
Sealing.
7. the tamper calibration equipment of density monitor as claimed in claim 5, which is characterized in that the flow control pipe valve tool
Body is the flow control pipe valve of stainless steel material.
8. a kind of SF6 electrical equipment, which is characterized in that further include such as right including density monitor and SF6 switchgear ontology
It is required that the tamper calibration equipment of the described in any item density monitors of 1-7.
9. SF6 electrical equipment as claimed in claim 8, which is characterized in that the exposed setting of density monitor.
10. SF6 electrical equipment as claimed in claim 9, which is characterized in that the SF6 electrical equipment further includes for preventing
State the rain cover of density monitor water inlet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811267851.7A CN109031115A (en) | 2018-10-29 | 2018-10-29 | A kind of the tamper calibration equipment and SF6 electrical equipment of density monitor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811267851.7A CN109031115A (en) | 2018-10-29 | 2018-10-29 | A kind of the tamper calibration equipment and SF6 electrical equipment of density monitor |
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| CN201811267851.7A Pending CN109031115A (en) | 2018-10-29 | 2018-10-29 | A kind of the tamper calibration equipment and SF6 electrical equipment of density monitor |
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| CN110361648A (en) * | 2019-07-23 | 2019-10-22 | 国网上海市电力公司 | A kind of sulfur hexafluoride gas density relay method of calibration and system |
| CN110412461A (en) * | 2019-09-04 | 2019-11-05 | 上海乐研电气有限公司 | Transmitter and system for automatic on-line verification density monitor |
| CN110426314A (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 |
| CN110456266A (en) * | 2019-09-04 | 2019-11-15 | 上海乐研电气有限公司 | Electrical system and its method of calibration with on-line sampling verifying function |
| CN110535058A (en) * | 2019-09-04 | 2019-12-03 | 上海乐研电气有限公司 | Electrical system and its method of calibration with on-line sampling verifying function |
| CN110568350A (en) * | 2019-09-04 | 2019-12-13 | 上海卓电电气有限公司 | Maintenance-free intelligent gas density monitoring device, method and system |
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| CN110535058A (en) * | 2019-09-04 | 2019-12-03 | 上海乐研电气有限公司 | Electrical system and its method of calibration with on-line sampling verifying function |
| CN110568350A (en) * | 2019-09-04 | 2019-12-13 | 上海卓电电气有限公司 | Maintenance-free intelligent gas density monitoring device, method and system |
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