CN211402639U - Sulfur hexafluoride density meter calibrator for transformer substation - Google Patents
Sulfur hexafluoride density meter calibrator for transformer substation Download PDFInfo
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- CN211402639U CN211402639U CN201922027513.2U CN201922027513U CN211402639U CN 211402639 U CN211402639 U CN 211402639U CN 201922027513 U CN201922027513 U CN 201922027513U CN 211402639 U CN211402639 U CN 211402639U
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- sulfur hexafluoride
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- density meter
- check
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- 229910018503 SF6 Inorganic materials 0.000 title claims abstract description 46
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229960000909 sulfur hexafluoride Drugs 0.000 title claims abstract description 45
- 238000011084 recovery Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 27
- 238000004064 recycling Methods 0.000 claims description 16
- 238000012795 verification Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 59
- 239000002912 waste gas Substances 0.000 abstract description 4
- 230000006978 adaptation Effects 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a sulfur hexafluoride density meter check gauge for transformer substation, its adaptation that can be very convenient exempts from the check-up of dismantling the sulfur hexafluoride density meter, promotes check-up efficiency, can also be favorable to waste gas recycle with the gas recovery after the check-up, avoids polluted environment. The utility model comprises a checking host, wherein an air outlet and a density relay air circuit interface are arranged on a control panel of a shell of the checking host; the method is used for verifying the disassembly-free sulfur hexafluoride density meter; the exhaust port is connected with the recovery assembly through a recovery hose; the density relay gas path interface is provided with a disassembly-free check assembly which is used for being connected with a check interface of a density relay to be checked; the density relay gas circuit interface is provided with a mounting flange, the center of the flange is a connecting pipe which is arranged in a protruding mode and communicated with a gas circuit of the checking host, and the connecting pipe is sleeved with a gas guide pipe.
Description
Technical Field
The utility model relates to a sulfur hexafluoride density check-up instrument specifically is used for the examination calibration of sulfur hexafluoride density table.
Background
With the development of scientific technology, sulfur hexafluoride electrical equipment is applied to power grids more and more widely and becomes main equipment in the power grids, the failure of the electrical equipment is always a main factor endangering the safe operation of the power grids, a considerable proportion of the annual unplanned outages are caused by the failure of the sulfur hexafluoride electrical equipment, and therefore the reliable operation of the sulfur hexafluoride electrical equipment is the key for improving the power supply rate. At present, the operation condition of equipment is mastered by regularly detecting gas in electrical equipment on line by adopting a portable instrument device in China, sulfur hexafluoride gas is one of six greenhouse effect gases, the influence on the environment is listed as one of ten global pollutions, and if the detected gas is directly discharged into the atmosphere, the greenhouse effect is caused after the gas is increasingly accumulated, and the living environment of human is influenced.
According to eighteen requirements of power grid major anti-accident measures of a national power grid company (national power grid limited corporation): the sulfur hexafluoride density relay should be checked regularly to prevent false alarm or no alarm of the circuit breaker caused by inaccurate or deviated action value of the density relay.
The latest regulations also require that the connection mode between the sulfur hexafluoride density relay (meter) and the electrical equipment body should meet the requirement of not disassembling the check density relay. Therefore, the sulfur hexafluoride density relay (meter) on site of the transformer substation needs to be checked in a mode of on-site non-disassembly gradually.
The working requirement of regularly checking the sulfur hexafluoride density meter is strictly executed by the Turpan power supply company of Xinjiang electric power Limited corporation in China network for a long time, a patent product is commonly used in the adopted equipment, the patent scheme (patent number is 2015207845761, publication number is 2016.01.13, publication number is CN204964739U) discloses a checking device of an SF6 density relay checking instrument, the precision of the checking device is higher, but the situation that the checked gas is directly discharged to the external environment really exists in the long-term use of a comparison document 1, and meanwhile, a table seat used for fixing the sulfur hexafluoride density meter is installed at a checking port of the checking device, so that the checking device still adopts a checking mode of dismantling the existing sulfur hexafluoride density meter in most of time, the mode is more traditional, and the phenomenon of low efficiency is caused for the dismantling-free sulfur hexafluoride density meter.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough among the above-mentioned prior art is directed against, disclose a sulfur hexafluoride density meter check gauge for transformer substation, its adaptation that can be very convenient exempts from the check-up of dismantling the sulfur hexafluoride density meter, promotes check-up efficiency, can also be with the gas recovery after the check-up, avoids polluted environment also to be favorable to waste gas recycle.
The utility model provides a technical scheme that its technical problem adopted is: the sulfur hexafluoride density meter calibrator for the transformer substation comprises a calibration host, wherein an exhaust port and a density relay gas circuit interface are arranged on a control panel of a shell of the calibration host; the method is used for verifying the disassembly-free sulfur hexafluoride density meter; a verification interface which is opened and closed through a plugging plug is reserved on the disassembly-free sulfur hexafluoride density meter;
the exhaust port is connected with the recovery assembly through a recovery hose; the density relay gas path interface is provided with a disassembly-free check assembly which is used for being connected with a check interface of a density relay to be checked;
the density relay gas circuit interface is provided with a mounting flange, the center of the flange is provided with a connecting pipe which is convexly arranged and communicated with the gas circuit of the checking host, the connecting pipe is sleeved with a gas guide pipe, and the far end of the gas guide pipe is connected with the joint;
the connector comprises a connector body provided with an inner cavity, the lower end of the connector body is provided with external threads matched with a fastener at the top of the air guide tube, the inner cavity is communicated with the air guide tube, the air guide tube is inserted into the inner cavity at the lower end of the connector body, the middle lower part of the inner cavity is provided with a spring, the bottom end of the spring is fixed on the inner surface of the inner cavity, the top end of the spring is fixed with a sealing frame, the sealing frame moves upwards along the inner cavity under the driving of the spring, the sealing frame comprises a circular top plate and an air plugging head arranged on the circular top plate, the upper part of the;
the connector is sleeved in the back-tightening nut, and after the back-tightening nut is fastened on the check interface, the air inlet pipe of the connector is communicated with the air passage in the check interface;
the recovery component comprises a gas storage bag, a compressor and a gas storage tank which are sequentially connected through a pipeline; the pipeline of the air inlet of the air storage bag is a recycling air inlet pipeline, and two ends of the recycling hose are respectively connected with the air outlet and the inlet of the recycling air inlet pipeline through quick connectors.
As a preferred embodiment of the present invention: the outer edge of one end of the joint fixed in the back nut is provided with a joint step; the inner diameter of the back nut close to the top is reduced to form a nut step for limiting.
As a preferred embodiment of the present invention: the flange is fixed on the control panel through fastening screws; the density relay gas circuit interface is flush with the surface of the control panel.
As a preferred embodiment of the present invention: the recovery air intake pipeline is provided with an electromagnetic valve I, the exhaust outlet of the air storage tank is provided with a recovery exhaust pipeline, and the recovery exhaust pipeline is provided with an electromagnetic valve II.
As a preferred embodiment of the present invention: the pressure sensor I and the pressure sensor II are used for detecting the pressure in the gas storage bag and the gas storage tank; and the pressure sensor I and the pressure sensor II are both electrically connected with the vacuum pump.
As a preferred embodiment of the present invention: the inner wall of the connecting pipe on the flange is provided with a circle of sealing groove, and a circle of sealing boss is correspondingly protruded on the air guide pipe inserted into the connecting pipe in the radial direction.
As a preferred embodiment of the present invention: the vacuum pump is a diaphragm vacuum pump, and the electromagnetic valve I and the electromagnetic valve II are one-way diaphragm electromagnetic valves.
As a preferred embodiment of the present invention: the gas storage tank is a steel cylinder; and the quick connectors at the two ends of the recovery hose are self-sealing valve quick connectors.
Compared with the prior art, the utility model has the following advantage:
the utility model discloses a sulfur hexafluoride density meter calibrator for transformer substation, the exhaust port is connected with a recovery assembly through a recovery hose; the recovery assembly is used for collecting gas discharged by the gas outlet; the density relay gas path interface is provided with a disassembly-free check assembly which is used for being connected with a check interface of a density relay to be checked; the disassembly-free check assembly is connected with a check port of the sulfur hexafluoride density meter at a remote installation position through an extended pipeline structure and a joint structure, so that a disassembly process is avoided, and check connection is facilitated;
the utility model discloses a mounting flange on the density relay gas circuit interface, the flange center is the protruding connecting pipe that sets up and check-up host computer gas circuit UNICOM, is equipped with the air duct on the connecting pipe, the distal end and the joint connection of air duct; the air guide pipe for increasing the transmission distance of the air path can be reliably fixed on the air path interface of the density relay on the control panel through the structure of the flange; the air guide pipe extends the whole connector to a position where the connector can be assembled with the installation position of the on-site sulfur hexafluoride density meter with the verification function, so that the density meter does not need to be dismounted during verification, and only a plugging head of a verification port needs to be dismounted;
the joint of the utility model comprises a joint body provided with an inner cavity, wherein the inner cavity is communicated with an air duct gas circuit and the air duct is inserted into an air inlet pipe at the upper end of the joint body, a spring is arranged at the middle lower part of the inner cavity, the bottom end of the spring is fixed on the inner surface of the inner cavity, a sealing frame is fixed at the top end of the spring and moves upwards along the inner cavity under the drive of the spring, the sealing frame comprises a circular top plate and an air plugging head arranged on the circular top plate, the upper part of the inner cavity is provided with the air inlet pipe, a pipe orifice; in the embodiment, the joint structure assembled with the sulfur hexafluoride density meter is designed, a pneumatic sealing mode is adopted, and the sealing is realized by utilizing the elastic force of the spring when the joint is not connected with the sulfur hexafluoride density meter. After the check port of the sulfur hexafluoride density meter is connected, when the pressure generated by the output gas for checking is larger than the elastic force of the spring, the sealing frame moves downwards, and the gas guide pipe is communicated with the check port of the sulfur hexafluoride density meter and an internal gas circuit thereof through the inner cavity of the connector.
The utility model discloses a recovery component, which comprises a gas storage bag, a compressor and a gas storage tank which are connected in sequence through pipelines; the pipeline of the air inlet of the air storage bag is a recycling air inlet pipeline, and two ends of the recycling hose are respectively connected with the air outlet and the inlet of the recycling air inlet pipeline through quick connectors. Considering that more density meters need to be checked each time, the utility model designs a structure that the compression pump stores compressed gas for the gas storage tank, thus being capable of meeting the waste gas exhausted by checking all sulfur hexafluoride meters on site under most conditions; the initial waste gas is discharged into the gas storage bag, the buffering process is reserved, and the whole recycling structure is reasonable, reliable and practical.
Drawings
FIG. 1 is a schematic structural diagram of a control panel of a comparison document 1 in the prior art;
FIG. 2 is a schematic view of the overall structure of an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a specific embodiment of the disassembly-free calibration assembly of the present invention.
Description of reference numerals:
100-recovery assembly, 200-control panel, 300-disassembly-free check assembly and 400-centralized processing device;
101-recovery hose, 102-exhaust port quick plug, 103-electromagnetic valves I and 104-recovery air inlet pipeline, 105-pressure sensors I and 106-compressor, 107-air storage tank, 108-pressure sensors II and 109-electromagnetic valves II and 110-air storage bag;
201-power plug, 202-charging indicator light, 203-USB interface, 204-switch, 205-control screen, 207-signal line interface, 208-temperature sensor interface, 209-density relay gas circuit interface, 210-gas charging port, 211-gas outlet, 212-handle;
301-air inlet pipe, 302-pipe orifice sealing element, 304-joint step, 305-back nut, 306-nut step, 307-inner cavity, 308-joint body, 309-spring, 310-sealing frame, 311-internal thread, 312-air duct, 313-connecting pipe, 314-flange and 315-fastening screw.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functions, methods, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
As shown in fig. 1 to 3, which show a specific embodiment of the present invention; as shown in the figures, the utility model discloses a sulfur hexafluoride density meter calibrator for transformer substation, which comprises a calibration host, wherein an air outlet 211 and a density relay air circuit interface 209 are arranged on a control panel of a shell of the calibration host; the method is used for verifying the disassembly-free sulfur hexafluoride density meter; a verification interface which is opened and closed through a plugging plug is reserved on the disassembly-free sulfur hexafluoride density meter;
the exhaust port is connected with the recovery assembly 100 through a recovery hose; the density relay gas path interface is provided with a disassembly-free checking assembly 300 which is used for being connected with a checking interface of a density relay to be checked;
the density relay gas path interface 209 is provided with a mounting flange 304, the center of the flange is provided with a connecting pipe 313 which is convexly arranged and communicated with the gas path of the checking host, the connecting pipe is sleeved with a gas guide pipe 312, and the far end of the gas guide pipe is connected with the joint;
the connector comprises a connector body 308 provided with an inner cavity, the inner cavity 307 is communicated with an air passage of an air duct, the air duct is inserted into an air inlet pipe 301 at the upper end of the connector body, a spring 309 is arranged at the middle lower part of the inner cavity, the bottom end of the spring is fixed on the inner surface of the inner cavity, a sealing frame 310 is fixed at the top end of the spring 309, the sealing frame moves upwards along the inner cavity under the driving of the spring, the sealing frame comprises a circular top plate and an air plugging head arranged on the circular top plate, the upper part of the inner cavity is provided with the air inlet pipe 301, a;
the connector is sleeved in a back-tightening nut 305, after the back-tightening nut is fastened on the check interface, the lower end of the connector is butted with the check interface, and an inner cavity is communicated with a check interface air passage;
the recovery component comprises a gas storage bag 110, a compressor 106 and a gas storage tank 107 which are sequentially connected through a pipeline; the pipeline of the air inlet of the air storage bag is a recycling air inlet pipeline 104, and two ends of the recycling hose 101 are respectively connected with the air outlet and the inlet of the recycling air inlet pipeline 104 through quick connectors.
Compare comparison document 1, the utility model discloses mainly improve at exhaust recovery part and check interface part, other parts do not improve, and other parts can refer to comparison document 1, also can refer to current check-up equipment, for example the structure that the check-up host computer contains etc.
Preferably, as shown in fig. 3: the outer edge of one end of the joint fixed in the back nut is provided with a joint step 304; the inner diameter of the back nut near the top is reduced to form a nut step 306 for limiting.
Preferably, as shown in fig. 1 and 2: the flange 314 is fixed on the control panel through fastening screws; the density relay gas circuit interface is flush with the surface of the control panel. The flange is fixed and is controlled the panel and make the base of installation air duct very stable, helps longer extension effect.
Preferably, as shown in fig. 2: the recycling air inlet pipeline 104 is provided with an electromagnetic valve I103, the exhaust outlet of the air storage tank is provided with a recycling exhaust pipeline, and the recycling exhaust pipeline is provided with an electromagnetic valve II 109. The solenoid valve can realize circuit cooperation, helps more reasonable collection gas.
Preferably, as shown in fig. 2: the pressure sensor I105 and the pressure sensor II108 are used for detecting the pressure in the air storage bag and the air storage tank; and the pressure sensor I and the pressure sensor II are both electrically connected with the vacuum pump. The pressure sensor can acquire pressure and know whether the corresponding gas storage bag and the corresponding gas storage tank are full of gas or not; when full, a signal is given, so that in the optimal working state, the compressor is started to store gas in the gas storage tank after the gas storage bag is full, and the gas storage tank is considered to be intensively sent to the centralized processing device 400 for processing after being full.
Preferably, as shown in fig. 2: the inner wall of the connecting pipe on the flange is provided with a circle of sealing groove, and a circle of sealing boss is correspondingly protruded on the air guide pipe inserted into the connecting pipe in the radial direction. The sealing structure disclosed by the embodiment greatly improves the connection sealing property and connection reliability of the connecting pipe and the air guide pipe.
Preferably, as shown in fig. 2: the vacuum pump is a diaphragm vacuum pump, and the electromagnetic valve I and the electromagnetic valve II are one-way diaphragm electromagnetic valves.
Preferably, as shown in fig. 2: the gas storage tank is a steel cylinder; and the quick connectors at the two ends of the recovery hose are self-sealing valve quick connectors. The quick connector of the self-sealing valve can prevent air leakage after being disassembled, and avoids random emission of sulfur hexafluoride gas.
The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The sulfur hexafluoride density meter calibrator for the transformer substation comprises a calibration host, wherein an exhaust port and a density relay gas circuit interface are arranged on a control panel of a shell of the calibration host; the method is used for verifying the disassembly-free sulfur hexafluoride density meter; a verification interface which is opened and closed through a plugging plug is reserved on the disassembly-free sulfur hexafluoride density meter;
the method is characterized in that: the exhaust port is connected with the recovery assembly through a recovery hose; the density relay gas path interface is provided with a disassembly-free check assembly which is used for being connected with a check interface of a density relay to be checked;
the density relay gas circuit interface is provided with a mounting flange, the center of the flange is provided with a connecting pipe which is convexly arranged and communicated with the gas circuit of the checking host, the connecting pipe is sleeved with a gas guide pipe, and the far end of the gas guide pipe is connected with the joint;
the connector comprises a connector body provided with an inner cavity, the inner cavity is communicated with an air passage of the air guide tube, the air guide tube is inserted into an air inlet tube at the upper end of the connector body, a spring is arranged at the middle lower part of the inner cavity, the bottom end of the spring is fixed on the inner surface of the inner cavity, a sealing frame is fixed at the top end of the spring and moves upwards along the inner cavity under the driving of the spring, the sealing frame comprises a circular top plate and an air plugging head arranged on the circular top plate, the upper part of the inner cavity is provided with the air inlet tube, a;
the connector is sleeved in the back-tightening nut, the lower end of the connector is butted with the check interface and the inner cavity is communicated with the air passage of the check interface after the back-tightening nut is fastened on the check interface;
the recovery component comprises a gas storage bag, a compressor and a gas storage tank which are sequentially connected through a pipeline; the pipeline of the air inlet of the air storage bag is a recycling air inlet pipeline, and two ends of the recycling hose are respectively connected with the air outlet and the inlet of the recycling air inlet pipeline through quick connectors.
2. The sulfur hexafluoride density meter calibrator for substations according to claim 1, wherein: the outer edge of one end of the joint fixed in the back nut is provided with a joint step; the inner diameter of the back nut close to the top is reduced to form a nut step for limiting.
3. The sulfur hexafluoride density meter calibrator for substations according to claim 1, wherein: the flange is fixed on the control panel through fastening screws; the density relay gas circuit interface is flush with the surface of the control panel.
4. The sulfur hexafluoride density meter calibrator for substations according to claim 1, wherein: the recovery air intake pipeline is provided with an electromagnetic valve I, the exhaust outlet of the air storage tank is provided with a recovery exhaust pipeline, and the recovery exhaust pipeline is provided with an electromagnetic valve II.
5. The sulfur hexafluoride density meter calibrator for substations according to claim 4, wherein: the pressure sensor I and the pressure sensor II are used for detecting the pressure in the gas storage bag and the gas storage tank; and the pressure sensor I and the pressure sensor II are both electrically connected with a vacuum pump.
6. The sulfur hexafluoride density meter calibrator for substations according to claim 1, wherein: the inner wall of the connecting pipe on the flange is provided with a circle of sealing groove, and a circle of sealing boss is correspondingly protruded on the air guide pipe inserted into the connecting pipe in the radial direction.
7. The sulfur hexafluoride density meter calibrator for substations according to claim 5, wherein: the vacuum pump is a diaphragm vacuum pump, and the electromagnetic valve I and the electromagnetic valve II are one-way diaphragm electromagnetic valves.
8. The sulfur hexafluoride density meter calibrator for substations according to claim 1, wherein: the gas storage tank is a steel cylinder; and the quick connectors at the two ends of the recovery hose are self-sealing valve quick connectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922027513.2U CN211402639U (en) | 2019-11-22 | 2019-11-22 | Sulfur hexafluoride density meter calibrator for transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922027513.2U CN211402639U (en) | 2019-11-22 | 2019-11-22 | Sulfur hexafluoride density meter calibrator for transformer substation |
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| Publication Number | Publication Date |
|---|---|
| CN211402639U true CN211402639U (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922027513.2U Active CN211402639U (en) | 2019-11-22 | 2019-11-22 | Sulfur hexafluoride density meter calibrator for transformer substation |
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| CN (1) | CN211402639U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114167092A (en) * | 2021-11-22 | 2022-03-11 | 贵州电网有限责任公司 | Pipe joint applied to density relay calibrator |
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2019
- 2019-11-22 CN CN201922027513.2U patent/CN211402639U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114167092A (en) * | 2021-11-22 | 2022-03-11 | 贵州电网有限责任公司 | Pipe joint applied to density relay calibrator |
| CN114167092B (en) * | 2021-11-22 | 2023-09-01 | 贵州电网有限责任公司 | Pipe joint applied to density relay calibrator |
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